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Tytuł:
The Influence of Household Wastewater Treatment Plants with Drainage System on the Quality of Groundwater in the Lublin Province, Poland
Autorzy:
Jóźwiakowski, Krzysztof
Marzec, Michał
Listosz, Agnieszka
Gizińska-Górna, Magdalena
Micek, Agnieszka
Pytka, Aneta
Pochwatka, Patrycja
Rybczyńska-Tkaczyk, Kamila
Powiązania:
https://bibliotekanauki.pl/articles/1839295.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
household wastewater treatment plants
drainage system
water quality
wells
groundwater
physical pollutants
chemical pollutants
microbiological pollutants
Opis:
The work presented the assessment of household wastewater treatment plants with drainage systems on the quality of groundwater in dug wells and deep water wells in the area of 3 selected communes (Drelów, Dębowa Kłoda and Urszulin), located in the Lublin province in south-eastern Poland. The investigations of the physicochemical composition of water from selected 28 dug wells and 2 deep water wells were conducted from June to July 2020, involving 9 measurement series. The microbiological studies consisted in 4 measurement series. The composition of the wastewater from primary settling tanks discharged to soil via drainage systems located in the vicinity of considered wells was also examined on a single occasion. The studies indicate that the water from wells are significantly polluted with ammonia, nitrites, as well as compounds of natural origin: iron and manganese. The presence of microbiological pollution of fecal origin was noted. The studies clearly indicate the possible pollution of the analyzed well waters with domestic sewage discharged to soil via drainage systems. Therefore, it necessary to take the actions aimed at improving the quality of groundwater in the Lublin province, including limitation of drainage systems, especially in the areas with unfavorable subsurface and hydrological conditions as well as low water supply coverage. The need to introduce changes in legal regulations and strategies for the development of technical infrastructure in counties, favoring the most efficient, as well as simple and inexpensive technologies, was indicated.
Źródło:
Journal of Ecological Engineering; 2021, 22, 3; 18-39
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Concentrations of organic and biogenic pollutants in domestic wastewater after mechanical treatment in the aspect of biological reactor design
Autorzy:
Bugajski, P.
Pawełek, J.
Kurek, K.
Powiązania:
https://bibliotekanauki.pl/articles/101123.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
wastewater
organic pollutants
biogenic pollutants
mechanical treatment
bioreactor design
Opis:
The aim of the study was to determine the value and concentration indicators of BOD5, COD and general nitrogen in domestic wastewater after mechanical treatment, which should be considered in the design of the activated sludge reactor. Ninety-nine samples of raw wastewater and after mechanical treatment were then collected and physicochemical analysis was carried out. The quantity of pollutants in the raw wastewater was verified to determine if this was domestic wastewater. The next stage of the analysis included the definition of the characteristic quantity of the analysed indicators in wastewater after mechanical treatment, which should be taken into account while calibrating computer programs supporting the design of biological reactor chambers. A detailed analysis led to the conclusion that mean values for BOD5 - 300 mgO2·dm-3, for COD - 500 mgO2·dm-3and for total nitrogen 50 mgN·dm-3 should be applied. The work also determined the susceptibility of wastewater after mechanical treatment to the decomposition of organic and biogenic compounds.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2017, IV/3; 1811-1822
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microbiological air monitoring and long-term evaluations of selected urban areas in the city of Tirana
Autorzy:
Troja, Erjon
Pinguli, Luljeta
Troja, Rozana
Dhamo, Eltion
Muca, Elena
Powiązania:
https://bibliotekanauki.pl/chapters/31233745.pdf
Data publikacji:
2021
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
Total Viable Count
outdoor pollutants
indoor pollutants
cocci
bacilli
molds
yeasts
Tirana
Albania
Opis:
The described experimental study, performed over the years, includes the quantitative and qualitative monitoring of the presence of microorganisms of air in outdoor and indoor environments of the Albanian Capital, Tirana, during a time when large demographic movements, accompanied by critical urban interventions and infrastructural changes have been part of our lives. A project, part of the National Program in Biotechnology (R&D – the year 2000), was the first support to obtain a database on microbiological air pollution in selected urban areas in Tirana and isolate and identify specific air microbial pollutants. The results obtained were an incentive to continue further with additional scientific evaluation monitoring research that included 2011 to 2015 and then those of 2016-2020. Over the years, there has been a significant reduction in pollutant microbial loads (for example, some outdoor areas of the center of Tirana), together with substantial fluctuations in indoor microbial loads, which were observed in many cases. Also, a prominent presence of typical environmental fungi pollutants was identified, such as Aspergillus niger, Aspergillus flavus, Aspergillus terreus, and bacterial pollutants, cocci and bacilli (typical Bacillus megaterium), during Total Viable Count (TVC) and other microbiological tests of identification.
Źródło:
Innovations – Sustainability – Modernity – Openness. Modernity in engineering; 123-134
9788366391901
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reduction of carbon dioxide and nitrogen oxides emissions from combustion engines of vehicles by using biomethane
Autorzy:
Merkisz, J.
Gis, W.
Powiązania:
https://bibliotekanauki.pl/articles/950096.pdf
Data publikacji:
2014
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
vehicles
combustion engines
pollutants
biomethane
Opis:
This paper discusses generally the possibility of reduction carbon dioxide and nitrogen oxides emissions from internal combustion engines of vehicles by using biomethane. The road transport in Europe almost fully depends on fossil fuels. Diversification of the road transport fuels will be a key attribute for road transport in the coming years. Purified biogas is one of alternative renewable fuels. Actually, in Poland biogas is used for generating electricity and heat. In some countries (for example in Sweden), upgraded biogas to natural gas quality (biomethane) is used as a vehicle fuel too. In this paper estimated biogas production potential in Baltic See Region countries: Poland and Sweden. It was one of the purposes of European Project Baltic Biogas Bus, and it is taken into account in European Project More Baltic Biogas Bus realized presently. Comparative studies of exhaust emissions of carbon dioxide and nitrogen oxides from city buses powered by diesel and CNG engine were carried out. The study was conducted under real traffic conditions in southern Polish city Rzeszow. Due to the lack in-service city buses with emission level Euro V in Rzeszow, comparative studies of this type of city buses powered by diesel and CNG engine was conducted in SORT I test. Determined mean values of road emissions of carbon dioxide and nitrogen oxides in g/km for the city buses operated in Rzeszow. Estimated value of the total road emissions in the case that would be replaced half the fleet of city buses (40 CNG buses and about 35% of the diesel engine powered buses, meet Euro III emission standard) by the CNG-powered (biomethane) city buses, complying with Euro V (EEV) emission standard.
Źródło:
Journal of KONES; 2014, 21, 1; 153-162
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quality assessment of vegetable oil industry effluents in Port Harcourt, Rivers State, Nigeria
Autorzy:
Verla, A. W.
Verla, E. N.
Adowei, P.
Briggs, A.
Horsfall Jnr, M.
Powiązania:
https://bibliotekanauki.pl/articles/412234.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
physicochemical
wastewater
biodegradability
pollutants
indices
Opis:
Five composite samples of waste water were collected from waste water tank of a vegetable oil refining company and were analyzed for physiochemical characteristics, heavy metal and organic pollutants. Physicochemical determinations were done according to standard methods; heavy metals were determined by use of Atomic Absorption Spectrophotometer method while organic pollutants were determined by Gas chromatography system HP 6890 series. Sulphate was determined by vanadomolybdophosphoric acid method while phosphates and chlorides were determined by argentometric method. Results reveal that effluent pH (4.67 ±0.015), salinity (125 ±4.50 %) and BOD5 (17.83 ±1.70 mg/l) were bellow WHO standard whereas TDS (127.7 ±5.77 mg/l), TSS (563.6 ±3.15 mg/l) and COD (3959 ±3.8 mg/l) were above WHO standards. Heavy metal pollution index (0.31) showed no multi-element contamination arising from effluent. The degree of contamination (1.84) showed that the effluent has a moderate polluting potential. Lower molecular weight PAHs showed a significant difference even though most of the organic compounds in vegetable oil refinery wastewater showed good biodegradability that varied weekly. Therefore there is either no treatment or an in effective treatment of the effluents. This could result to serious environmental problems in the near future.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 14, 2; 179-189
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Występowanie niebezpiecznych związków organicznych i pierwiastków śladowych w osadach dennych zbiorników zaporowych
Hazardous organic and trace element occurrence in bottom sediments of dam reservoirs
Autorzy:
Dmitruk, U.
Jancewicz, A.
Tomczuk, U.
Powiązania:
https://bibliotekanauki.pl/articles/236973.pdf
Data publikacji:
2013
Wydawca:
Polskie Zrzeszenie Inżynierów i Techników Sanitarnych
Tematy:
organic pollutants
inorganic pollutants
PAHs
PCBs
zanieczyszczenia organiczne
zanieczyszczenia nieorganiczne
WWA
PCB
Opis:
Quality of bottom sediments was examined for 15 reservoirs classified as the Sudeten, Carpathian or lowland reservoirs, according to their location. These reservoirs serve multiple functions including flood control, providing hydroelectric power, supplying water for general public, industry or agriculture and recreational. The study was conducted in 2008 and 2010. The scope of the analysis included trace elements (As, Cr, Zn, Cd, Cu, Ni, Pb and Hg) and organic compounds: polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs) and chloroorganic pesticides. It was determined that concentration of trace element compounds ranged from <0.01 mg/kg to 422 mg/kg, while of PAHs from <0.0001 mg/kg to 7.5 mg/kg, PCBs from <0.0001 mg/kg to 0.78 mg/kg and of chloroorganic pesticides from <0.0002 mg/kg to 0.065 mg/kg. The sediments from the Sudeten reservoirs were found to be the most polluted, while the sediments from the lowland reservoirs the least.
Wykonano badania jakości osadów dennych pobranych z 15 zbiorników zaporowych, które w zależności od lokalizacji przyporządkowano do grupy zbiorników sudeckich, karpackich lub nizinnych. Zbiorniki te służą do różnych celów, takich jak ochrona przeciwpowodziowa, energetyka wodna, zaopatrzenie w wodę ludności, przemysłu i rolnictwa oraz rekreacja. Badania wykonano w latach 2008 i 2010. Zakres analizy osadów dennych obejmował pierwiastki śladowe (As, Cr, Zn, Cd, Cu, Ni, Pb i Hg) i związki organiczne (wielopierścieniowe węglowodory aromatyczne – WWA, polichlorowane bifenyle – PCB i pestycydy chloroorganiczne). Stwierdzono, że zawartość pierwiastków śladowych w osadach wynosiła od <0,01 mg/kg do 422 mg/kg; WWA od <0,0001 mg/kg do 7,5 mg/kg, PCB od <0,0001 mg/kg do 0,78 mg/kg, a pestycydy chloroorganiczne od <0,0002 mg/kg do 0,065 mg/kg. Najbardziej zanieczyszczone okazały się osady denne pobrane ze zbiorników sudeckich a najmniej z nizinnych.
Źródło:
Ochrona Środowiska; 2013, 35, 2; 63-68
1230-6169
Pojawia się w:
Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of pollutant emission from motor vehicles on air quality in a city agglomeration
Autorzy:
Chłopek, Zdzisław
Lasocki, Jakub
Strzałkowska, Katarzyna
Zakrzewska, Dagna
Powiązania:
https://bibliotekanauki.pl/articles/133589.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
emission of pollutants
immission of pollutants
motor vehicles
emisja zanieczyszczeń
imisja zanieczyszczeń
pojazdy samochodowe
Opis:
In the large urban areas, in middle latitudes, as in case of Poland, the cause of poor air quality is immission: in winter particulate matter PM10 and PM2.5, in summer - ozone and nitrogen oxides (or nitrogen dioxide). In the whole country, road transport is significantly responsible for the emission of nitrogen oxides (30%), carbon monoxide (20%) and less for emission of particulate matter (a few percent). In the case of other pollutants, the emission of non-metallic organic compounds is less than 10% (including polycyclic organic compounds - just over 0.5%), and sulfur oxides - only 0.03%! To analyze impact of automotive industry on air quality, pollutant emission data from two stations in Krakow were selected. These stations are known for poor air quality - the stations are: Dietla Street - with a high level of traffic and Kurdwanów - place located far from traffic routes. It was found that other objects than automotive vehicles are the dominant source of dust. These are industrial sources and - above all - energy sources, especially individual heating installations. Particularly large dust pollution occurs in winter and it is not always in areas with intense traffic. There was a strong dependence between immission of pollutants and road traffic, however, this dependence is not dominant in assessing the risk of air quality in urban agglomerations.
Źródło:
Combustion Engines; 2019, 58, 2; 7-11
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zagrożenia wynikające z emisji pyłu zawieszonego z liniowych źródeł komunikacyjnych
Threats resulting from the emission of suspended dust from linear communication sources
Autorzy:
Dmochowska, A.
Skuneczny, K.
Polańczyk, A.
Jarosz, W.
Ciuka-Witrylak, M.
Powiązania:
https://bibliotekanauki.pl/articles/136857.pdf
Data publikacji:
2018
Wydawca:
Szkoła Główna Służby Pożarniczej
Tematy:
zanieczyszczenia powietrza
pyły
emisja liniowa zanieczyszczeń
air pollutants
dust
linear emission of pollutants
Opis:
Zanieczyszczenia powietrza oddziałują zarówno na człowieka, jak i całe środowisko naturalne: gleby, wody, ziemię, zwierzęta i rośliny. Jednym z nich jest pył zawieszony. Badania stężeń frakcji tego pyłu PM10, PM2,5, PM1,0 z liniowych źródeł komunikacyjnych zaplanowano i wykonano na Woli, jednej z dzielnic Warszawy. Pomiary za pomocą pyłomierza DustTrak II odbywały się dwa razy w ciągu doby w różnym czasie, ale w tych samych punktach pomiarowych, znajdujących się przy wybranych arteriach komunikacyjnych. Wpływ liniowych źródeł emisji pyłu zależy bardzo często od stanu technicznego pojazdów, ale również bardzo duże znaczenie ma sposób organizacji i natężenie ruchu oraz przepustowość dróg. Zwrócono uwagę na to, że bardzo istotny wpływ na rozkład stężeń pyłu zawieszonego w powietrzu atmosferycznym mają między innymi warunki meteorologiczne. Zjawisko inwersji termicznej w sposób istotny utrudnia ruchy zanieczyszczonych mas powietrza, w wyniku czego masy te kumulują się na danym terenie, powodując gromadzenie się mgły oraz wzmacnianie się smogu na obszarze, gdzie wystąpiła duża emisja zanieczyszczeń.
Air pollution affects both man and the whole natural environment-soil, water, animals and plants. One of the key pollutants of the atmospheric air is the suspended dust. Investigations of the concentrations of this PM10, PM2.5, PM1.0 fractions from linear communication sources were planned and carried out in Wola, one of the Warsaw districts . The measurements using the DustTrak II dust meter took place twice a day at different times, but at the same measuring points located at selected traffic arteries. The influence of linear dust emission sources depends very often on the technical condition of vehicles, but also the manner of organization and volume of traffic as well as road capacity are very important. It has been pointed out that the meteorological conditions have a very significant influence on the distribution of particulate matter suspended in the atmospheric air. The phenomenon of the thermal inversion significantly impedes the movements of the contaminated air masses, as a result of which these masses are cumulated in a given area, causing the accumulation of fog and strengthening the smog in the area where a large emission of pollutants occurred.
Źródło:
Zeszyty Naukowe SGSP / Szkoła Główna Służby Pożarniczej; 2018, 4, 68; 51-80
0239-5223
Pojawia się w:
Zeszyty Naukowe SGSP / Szkoła Główna Służby Pożarniczej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ zrzutu nieoczyszczonych ścieków na środowisko wodne cieku
Influence of untreated sewage discharge on the aquatic environment of the watercourse
Autorzy:
Bielski, A.
Powiązania:
https://bibliotekanauki.pl/articles/297758.pdf
Data publikacji:
2012
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:
ścieki
zanieczyszczenia
woda
rzeka
kinetyka przemian zanieczyszczeń
sewage
pollutants
water
river
transformation kinetics of pollutants
Opis:
Przedstawiono sposób oceny wpływu na środowisko wodne nieoczyszczonych ścieków zawierających osad czynny. Odległe w czasie, incydentalne zrzuty ścieków, w szczególności miejskich, wykazują szybki zanik oddziaływania na fazę wodną cieku. W celu wykazania faktu odprowadzenia ścieków, bez względu na ich korzystny czy też niekorzystny wpływ na odbiornik, konieczne było przeprowadzenie badań własności osadów dennych zdeponowanych bezpośrednio powyżej i poniżej przekroju zrzutu ścieków. Zmiana niektórych własności osadu może być wykazana tylko za pomocą modelu matematycznego, opisującego przebiegi procesów zachodzących w próbce wody i próbce wody z osadami. Model matematyczny zawiera równania różniczkowe opisujące zmiany w czasie wskaźników jakości wody oraz koncentracji mikroorganizmów. Równania opisują przebiegi następujących procesów: biochemiczne utlenianie związków organicznych, nitryfikację pierwszego i drugiego stopnia, denitryfikację, amonifikację, defosfatację. W równaniach wzrostu mikroorganizmów uwzględniono asymilację azotu i fosforu. W opisie kinetyki wzrostu organizmów heterotroficznych uwzględniono także respirację endogenną oraz zamieranie komórek. Model matematyczny umożliwił określenie maksymalnych szybkości przemian zanieczyszczeń w próbkach wody i wody z osadami pobranych w przekrojach położonych powyżej i poniżej zrzutu ścieków. Na podstawie informacji o stężeniach wybranych substancji oraz szybkościach procesów biochemicznych w próbkach wody i wody z osadami wykazano istnienie w przeszłości zrzutu ścieków do potoku i jego wpływ na osady denne cieku. Próbki wody zawierające osady, pobrane powyżej i poniżej zrzutu ścieków zawierających osad czynny, miały różne własności. Dodanie osadów do próbki wody powoduje zmianę szybkości procesów biologicznych w porównaniu z tymi, jakie obserwowano w próbkach wody bez osadów. Próbka osadów pobranych w przekroju poniżej zrzutu ścieków, dodana do próbki wody, powoduje wystąpienie gwałtownego zużycia tlenu (procesy chemiczne i/lub biochemiczne) w ciągu pierwszych 6 godzin inkubacji próbki wody z osadem. Zużycie to jest większe od zużycia tlenu w próbce z osadem pobranym powyżej zrzutu ścieków. Warunki beztlenowe, jakie panowały w osadzie pobranym w przekroju poniżej zrzutu ścieków, przyczyniły się do wzrostu organizmów denitryfikujących. Dodanie tego osadu do próbki wody spowodowało wystąpienie procesu denitryfikacji.
The paper presents a method to assess the impact of untreated sewage containing activated sludge on the aquatic environment. Distant in time, incidental sewage discharges, particularly urban show the rapid disappearance of the impact on the aqueous phase of watercourse. In order to demonstrate the fact of sewage discharge, regardless of their beneficial or adverse effect on the receiver, it was necessary to study properties of the deposited sediments directly above and below the cross section of discharge. Amendment of certain properties of sediment can be demonstrated only by means of a mathematical model describing the phenomena in a water sample and in a water sample with the sediments. The mathematical model includes differential equations describing the changes in water quality indicators and concentration of microorganisms with time. The equations describe the following processes: the biochemical oxidation of organic compounds, nitrification of the first and second degree, denitrification, ammonification, defosfatation. The equations of the microbial growth include assimilation of nitrogen and phosphorus. Description of the kinetics of growth of heterotrophic organisms also includes endogenous respiration and decay of cells. The mathematical model allowed the determination of the maximum transformation rates of pollutants in water samples and water samples with sediments collected in sections located above and below the sewage discharge. On the basis of information on concentrations of selected substances and rates of biochemical processes in water samples and water samples with the sediments there has been demonstrated existence in the past the discharge of sewage into the stream and its impact on the stream bottom sediments. Water samples containing sediments above and below the improved discharge wastewater containing activated sludge had different properties. The addition of sediment to the water sample changed the speed of biological processes in comparison with those observed in water samples without the deposits. Sediment sample taken at the discharge section below, added to the samples of water, causes a rapid consumption of oxygen (chemical and/or biochemical processes) during the first 6 hours of incubation of water samples with the sediment. Consumption is greater than the oxygen consumption in a sample of sediment collected above the discharge. Anaerobic conditions that prevailed in the sediment collected in the section below the discharge of sewage contributed to the growth of denitrifying organisms. The addition of sediment to the water sample caused the occurrence of denitrification.
Źródło:
Inżynieria i Ochrona Środowiska; 2012, 15, 2; 119-142
1505-3695
2391-7253
Pojawia się w:
Inżynieria i Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physical and numerical modeling of heat-flow processes in tangentially pulverized fuel-fired boiler
Autorzy:
Barański, J.
Stąsiek, J.
Blasiak, W.
Powiązania:
https://bibliotekanauki.pl/articles/1955747.pdf
Data publikacji:
2003
Wydawca:
Politechnika Gdańska
Tematy:
combustion
experimental modelling
air pollutants reduction
Opis:
The paper presents results of three-dimensional physical modeling and computer simulations of fluid-flow structures, mixing and combustion processes in a 125 MW tangentially fuel-fired boiler and additional fuel - natural gas. This method is commonly called the reburning process, with an emphasis on the reduction of CO, NOx and SOx. The co-firing process is realized between the main coal burners and additional fuel nozzles. To improve the mixing and combustion processes, a physical technique, the so-called acid/alkali technique, is used to optimize the placement and direction of additional air and fuel nozzles. The best result obtained from physical modeling experiments is studied using numerical simulations with the FLUENT commercial code. Numerical modeling results are then used to analyze the performance of an industrial boiler. These results, compared with measurements in a real boiler, seem to be in good agreement with each other.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2003, 7, 3; 347-362
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of Ecological Condition of Taiga Topsoil During Commercial Development
Autorzy:
Sivkov, Y.
Nikiforov, A.
Powiązania:
https://bibliotekanauki.pl/articles/123562.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
soil
pollutants
oil
industrial development
ecology
Opis:
The paper analyses the ecological properties of taiga topsoil during its commercial development and assesses the consequences of impact which will be made by the future facilities on the environment (taking into account the types of impact, their characteristics, the tendencies of transformation in the nature systems growing with the increase of service life, which were detected at the producing fields), sanitary and socioeconomic aspects of the facilities operation under the conditions of specific geographical complexes. The object of study included waspodzolic and swamp-podzolic soils located in the Uvat district in Khanty-Mansiysk Autonomous Region of Tyumen region, in the area of potential impact of industrial facilities. The method of study implied the selection of soil specimens and their examination according to the standard practices. Ten specimens were taken from each of three areas of sampling. The specimens were subjected to office study in order to determine eleven parameters. The sources of impact made by the oil and gas facility on the environment were the material objects (buildings, constructions etc.), elements and assemblies of basic and auxiliary technologies which result in pollutants emission. The major impact on topsoil at the stage of preparatory works and construction of facilities was the mechanical damage to the natural state of soils. It is primarily connected with sites stripping from forestry and ground leveling. The paper reviews the issues of ecological condition of topsoil and forecast of possible changes while commercial development of the studied area. A negative load on soil may be decreased through planning and implementation of organizational measures on assessment of current state of the topsoil within the field and environmental threat from basic and auxiliary industrial facilities.
Źródło:
Journal of Ecological Engineering; 2018, 19, 1; 163-169
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Possible use of spider webs for the indication of organic road pollutants
Autorzy:
Rybak, J
Powiązania:
https://bibliotekanauki.pl/articles/125045.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
PAHs
road pollutants
spider webs
indication
Opis:
The results of the research assessing the possibility of using spider webs for the indication of organic pollutants (PAHs) in the long period of time in the air polluted with road traffic emissions are presented. It was proved that webs could be used for the indication of pollutants of this type. Because of the great availability and dense structure of webs belonging to representatives of Agelenidae family, they can serve as a very effective tool. What is more, the secluded location of webs is favorable and influences the accuracy and credibility of results, since deposited pollutants are not washed off with rain, neither are they decomposed by microorganisms or sunlight. The influence of co-existing contaminants is also minimized.
Źródło:
Journal of Ecological Engineering; 2014, 15, 3; 39-45
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of point source pollutants on the distribution of selected water parameters in the Vistula River in Puławy, Poland
Autorzy:
Jakubiak, Mateusz
Bojarski, Bartosz
Powiązania:
https://bibliotekanauki.pl/articles/2048571.pdf
Data publikacji:
2021
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
point source pollutants
“Rozlewisko” reservoir
urban pollutants
wastewater discharge
water quality
water monitoring
watercourses
Opis:
Human activities have a complex and multidimensional impact on water quality. The concentration of inhabitants, production and services intensifies influence of urban agglomerations on water in rivers. Among many sources of surface water pollution, the most important are sewage discharges. The aim of the research was to determine the effect of point discharge of treated industrial and municipal wastewater on the distribution of selected water chemical parameters in the Vistula River in Puławy. The studies were carried out in 2018–2019. Samplings were collected in five sampling points and tested in the hydrochemical laboratory. The obtained data were statistically analysed to investigate differences between the sampling points. The negative impact of wastewater discharge on the water quality in the Vistula was found. However, the pollution level decreased with the flow of the river. The parameters tested at measurement point located 1200 m below the discharge approached the values recorded above the sewage outfall. The presented observations of changes in the concentration of pollutants indicate the self-purification capacity of a river. However, for each watercourse flowing through urbanized areas, it is an individual feature. It depends on a number of factors and requires regular monitoring studies taking into account hydrochemical analysis of watercourses.
Źródło:
Journal of Water and Land Development; 2021, 51; 50-55
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identification of Threats to the Soil and Water Environment on the Example of an Inactive Landfill Site
Autorzy:
Pusz, A.
Wiśniewska, M.
Rogalski, D.
Grzyb, G.
Powiązania:
https://bibliotekanauki.pl/articles/124301.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
landfill
soil and water environment
distribution of pollutants
available phosphorus
ammonium nitrogen
chlorides
EC
migration of pollutants
Opis:
Pollution migration is the main problem of the landfills that have been located, installed and operated without meeting basic environmental protection requirements. Undertaking effective reclamation treatments is conditioned by a good recognition of the object and its close and distant surroundings. The purpose of the work was to determine the potential hazard to the soil and water environment, based on selected factors, in the vicinity of a closed waste landfill at Głębocka Street in Warsaw. In the soil samples taken at the site from various depths, high concentrations of chlorides, EC, ammonium nitrogen and phosphates were found. Furthermore, the high ammonium nitrogen content correlated with the scent of ammonia, and the content of phosphates with the scent of organic compounds. These pollutants testify to the progressive decomposition of substances occurring in the mass of littering waste, which may pose a serious threat to groundwater. The landfill is also a potential geotechnical hazard because it is a dynamically changing object that can change stability, create caverns and landslides.
Źródło:
Journal of Ecological Engineering; 2018, 19, 4; 181-190
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Engine testing of RME additives
Autorzy:
Żółtowski, A.
Grzelak, P. L.
Powiązania:
https://bibliotekanauki.pl/articles/244303.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
renewable fuels
specific emissions of pollutants
Opis:
Reducing the emission of pollutants emitted from motor vehicles, and now also in greenhouse gas emissions, is a result of European Union policy. Vehicle design changes are just one way of reducing emissions of harmful substances and greenhouse gases. The second way is to change the type of fuel, by which the vehicle's engine is powered, that is the substitution of conventional fossil fuels derived from crude oil, such as gasoline or diesel fuel by so-called renewable fuels, for which the CO2 emissions are measured not only in the engine exhaust system, but also by analysis "from the source to the wheel" WTW (Well-to-wheel) - is much smaller. As part of this task the Directive 2009/28/EC introduced for all Member States to the use of renewable energy, biofuels, alternative fuels to a certain extent share of the energy and conventional fuel by 2020. This paper presents the results of measurements of emissions on the dynamometer with a diesel engine powered by six kinds of mixtures of diesel oil and rapeseed oil methyl ester (RME) – with esters containing 0 (clean diesel), 20, 40, 60, 80 and 100 (pure rapeseed oil methyl esters)% in the fuel. We analysed the reasons for the impact of changes in fuel composition on selected limited exhaust components. We found, that the addition of esters of rapeseed oil to the diesel fuel can be a reason of reducing the emissions of CO, CO2, and THC in the exhaust gases of tested engine and increased emissions of NOx and PM.
Źródło:
Journal of KONES; 2013, 20, 4; 511-516
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wastewater control system as an aspect of environmental assessment of industrial enterprise’s activity
Autorzy:
Mitryasova, O.
Bogatel, N.
Koszelnik, P.
Gruca-Rokosz, R.
Powiązania:
https://bibliotekanauki.pl/articles/105089.pdf
Data publikacji:
2018
Wydawca:
Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza
Tematy:
wastewater
pollutants
material balance
environmental management
Opis:
In order to reduce the influence of wastewater from enterprises on the environment extreme relevance is gained by improvement of the monitoring system at each stage of technological process. A new tool is calculation of the polluting substances concentration is suggested to be entered into the monitoring system on the basis of determination of material balance of technological process of production that will allow prediction of qualitative and quantitative composition of sewage for the selected period. The system can be used in any enterprise, but the example with all calculations is given for the Mykolaiv Branch of "SUN InBev Ukraine" which became the object of research. The scope of the study covered the process of wastewater formation of the enterprise. Realization of tasks demanded the use of general scientific methods: analysis, synthesis, systematization and generalization in the course of studying of the corresponding literature on the research subject; modelling, formalization, comparison - at drawing up the calculation scheme of concentration of the polluting substances in sewage; supervision - during studying the technological scheme of production; and also methods of mathematical data processing in MS Excel.
Źródło:
Czasopismo Inżynierii Lądowej, Środowiska i Architektury; 2018, 65, 3; 43-53
2300-5130
2300-8903
Pojawia się w:
Czasopismo Inżynierii Lądowej, Środowiska i Architektury
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monitoring of Pollutants in an Active Mining Dump Ema, Czech Republic
Monitoring zanieczyszczeń na składowisku odpadów górniczych Ema (Czechy)
Autorzy:
Ertile, E.
Surovka, D.
Sarcakova, E.
Bozon, A.
Powiązania:
https://bibliotekanauki.pl/articles/319196.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
monitoring
składowisko Ema
zanieczyszczenia
Ema dump
pollutants
Opis:
The mining activities carried out within the area of Ostrava City are responsible for at least six mine dumps of loose materials arising as wastes from mining of mineral resources. In the past there were difficulties with efficient separating of waste rock and tailings from coal and thus high amounts of coal substance remained in the waste, thus being prone to self-ignition. The thermal activity in dumps is responsible for many hazardous substances that pollute the environment and harm human health in the surroundings. Analysing the occurring pollutants in Ema Dump (Czech Republic) using the GC chromatography method, concentrations of CO2 and CH4 were determined in three sampling points during three measurements executed from January to March 2016. The highest measured concentration of CO2 in Ema Dump was 20 722 ppm. The top concentration of CH4 in Ema Dump was 707 ppm. The monitoring of SO2 in Ema Dump was carried out between April 2015 and January 2016. The final concentrations were identified using two measuring methods, namely the thorin method and the method with methylsulfonazo III as an indicator in dependence on different gas flow rates (1.5–3.0 l min-1) during sampling. The measured concentrations of SO2 ranged from 7.21 to 31.50 mg m-3, while the top concentration was taken in January 2016.
Działalność górnicza związana z wydobyciem węgla, prowadzona na rejonie miasta Ostrawa obejmuje poza działalnością górnicza sześć składowisk odpadów górniczych W przeszłości występowały trudności utrzymywaniem w odpadach niskich zawartości węgla zatem w odpadach pozostały znaczne ilości substancji węglowej, podatnej na samozapłon. Aktywność termiczna w wysypisk jest odpowiedzialna za emisję wielu substancji niebezpiecznych, które zanieczyszczają środowisko i szkodzą zdrowiu ludzi w okolicy. Analizując zanieczyszczenia występujące na składowisku Ema (Czechy), stosując metodę chromatografii GC, określono stężenia CO2 i CH4 w trzech punktach poboru prób, podczas trzech pomiarów wykonanych w okresie od stycznia do marca 2016 r. Najwyższe zmierzone stężenie CO2 na składowisku Ema wynosiło 20 722 ppm. górne stężenie CH4 wyniosło 707 ppm. Monitorowanie zawartości SO2 na składowisku Ema przeprowadzono w okresie od kwietnia 2015 r. do stycznia 2016 r. Końcowe stężenie SO2 określono z wykorzystaniem dwu metod wykorzystując jako wskaźnik thorin i methylsulfonazo III dla natężenia przepływu gazu (1,5–3,0 l min-1) podczas pobierania próbek. Zmierzone stężenia SO2 wahały się od 7,21 do 31,50 mg /m3, najwyższe stężenie zostało stwierdzone w styczniu 2016 roku.
Źródło:
Inżynieria Mineralna; 2017, R. 18, nr 1, 1; 45-50
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quantitative assessment of investments: regional eco-efficiency
Autorzy:
Voytsekhovska, V.
Simak, A.
Voytsekhovska, Yu.
Powiązania:
https://bibliotekanauki.pl/articles/411293.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
eco-investments
population density
industrial gas pollutants
Opis:
The article is dedicated to development of the methodological approach to determine the most effective ways and areas of investments use aimed at reducing the negative impacts of pollution. This takes into account the reality that the level of pollution is different for different areas (regions), and the degree of negative impact is due to two main factorsvolume of gas emissions and the number of residents living in these territories. Taking into account the lack of quantitative laws regarding the impact of pollution on human lives the expediency to limit some qualitative considerations that significantly contribute to the solution of the problem are developed in the article. The paper develops analytic approach, which is based on establishing the parameters that characterize the essence of the developed phenomenon. The state of air pollution in particular is seen as the main factor that significantly affects the residents’ life quality. At one and the same degree of negative pollution, its effect will depend on the number of residents living in the area. As our research continues with the assessment of air pollution reduction state, where two indicators were developed – harmful gas components in the air and population density in the area. Based on the hypothesis of parabolic type, the corresponding functional relation between the parameters proves, that the product of assumed parameters determines the priority of pollution reduction in some areas. The conducted proposed approach to interpretation of dust pollution on the example of regions of Poland is developed.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2016, 5, 1; 133-138
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A regional comparison of children’s blood cadmium, lead, and mercury in rural, urban and industrial areas of six European countries, and China, Ecuador, and Morocco
Autorzy:
Hrubá, Františka
Černá, Milena
Chen, Chunying
Harari, Florencia
Horvat, Milena
Koppová, Kvetoslava
Krsková, Andrea
Laamech, Jawhar
Li, Yu-Feng
Löfmark, Lina
Lundh, Thomas
Lyoussi, Badiaa
Mazej, Darja
Osredkar, Joško
Pawlas, Krystyna
Pawlas, Natalia
Prokopowicz, Adam
Rentschler, Gerda
Snoj Tratnik, Janja
Sommar, Johan
Spěváčková, Věra
Špirić, Zdravko
Skerfving, Staffan
Bergdahl, Ingvar A.
Powiązania:
https://bibliotekanauki.pl/articles/21375677.pdf
Data publikacji:
2023-09-07
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
biological monitoring
child
mercury
lead
environmental pollutants
cadmium
Opis:
Objectives The authors aimed to evaluate whether blood cadmium (B-Cd), lead (B-Pb) and mercury (B-Hg) in children differ regionally in 9 countries, and to identify factors correlating with exposure. Material and Methods The authors performed a cross-sectional study of children aged 7–14 years, living in 2007–2008 in urban, rural, or potentially polluted (“hot spot”) areas (ca. 50 children from each area, in total 1363 children) in 6 European and 3 non-European countries. The authors analysed Cd, Pb, and total Hg in blood and collected information on potential determinants of exposure through questionnaires. Regional differences in exposure levels were assessed within each country. Results Children living near industrial “hot-spots” had B-Cd 1.6 (95% CI: 1.4–1.9) times higher in the Czech Republic and 2.1 (95% CI:1.6–2.8) times higher in Poland, as compared to urban children in the same countries (geometric means [GM]: 0.13 μg/l and 0.15 μg/l, respectively). Correspondingly, B-Pb in the “hot spot” areas was 1.8 (95% CI: 1.6–2.1) times higher than in urban areas in Slovakia and 2.3 (95% CI: 1.9–2.7) times higher in Poland (urban GM: 19.4 μg/l and 16.3 μg/l, respectively). In China and Morocco, rural children had significantly lower B-Pb than urban ones (urban GM: 64 μg/l and 71 μg/l, respectively), suggesting urban exposure from leaded petrol, water pipes and/or coal-burning. Hg “hot spot” areas in China had B-Hg 3.1 (95% CI: 2.7–3.5) times higher, and Ecuador 1.5 (95% CI: 1.2–1.9) times higher, as compared to urban areas (urban GM: 2.45 μg/l and 3.23 μg/l, respectively). Besides industrial exposure, traffic correlated with B-Cd; male sex, environmental tobacco smoke, and offal consumption with B-Pb; and fish consumption and amalgam fillings with B-Hg. However, these correlations could only marginally explain regional differences. Conclusions These mainly European results indicate that some children experience about doubled exposures to toxic elements just because of where they live. These exposures are unsafe, identifiable, and preventable and therefore call for preventive actions.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2023, 36, 3; 349-364
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of temperature and the ratio of air excess on combustion efficiency of polyolefin materials
Wpływ temperatury i stosunku nadmiaru powietrza na efektywność spalania materiałów poliolefinowych
Autorzy:
Kuźnia, M.
Powiązania:
https://bibliotekanauki.pl/articles/263769.pdf
Data publikacji:
2010
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
spalanie
odpady poliolefinowe
zanieczyszczenia
combustion
polyolefin wastes
pollutants
Opis:
Combustion of plastics is a very complex process and phenomena, which occur during this process, have not been sufficiently investigated. Polyolefins constitute almost half of all the generated plastics. In this study, the influence of temperature and the ratio of air excess on the concentration of pollutants in flue gases have been presented. The studies carried out on the designed test bench were preceded by a series of thermal analyses (TG, DSC, TG-MS).
Spalanie tworzyw sztucznych jest procesem bardzo złożonym, a zachodzące w nim zjawiska nie są dostatecznie zbadane. Blisko połowę wszystkich generowanych tworzyw sztucznych stanowią poliolefiny. W niniejszej pracy przedstawiono wpływ temperatury i stosunku nadmiaru powietrza na stężenia zanieczyszczeń w gazach odlotowych. Badania na zaprojektowanym stanowisku badawczym poprzedzono szeregiem badań z zakresu analizy termicznej (TG, DSC, TG-MS).
Źródło:
Metallurgy and Foundry Engineering; 2010, 36, 1; 57-66
1230-2325
2300-8377
Pojawia się w:
Metallurgy and Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Studies on carcinogenic PAHs emission generated by vehicles and its correlation to fuel and engine types
Autorzy:
Kumar, V.
Kothiyal, N. C.
Powiązania:
https://bibliotekanauki.pl/articles/949327.pdf
Data publikacji:
2014
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
polycyclic aromatic hydrocarbons
gas chromatography
pollutants
concentration
season
Opis:
The objective of this study was to find major PAHs produced in ambient air from the automobile exhaust as a function of fuels (diesel, petrol, and biodiesel) and engine type qualitatively and quantitatively. The recovery range was found between 30% and 70%. The study was carried out on two, three, and four wheelers. Biodiesel samples tested in the study were synthesized indigenously from different starting raw materials and analyzed for PAHs concentration in the exhaust on a Honda genset (EBK 2000AC Model). Biodiesel samples were blended with diesel in different ratio (25:75, 35:65 and 45:55) to investigate the exhaust behavior. Biodiesel was blended with Diesel the concentration of almost all PAHs reduces in comparison to pure Diesel exhaust. B(a)A and B(a) P was the common PAH found in higher concentration in almost all fuels. FTIR results indicate esterification of vegetable oil and NMR results indicate a complete conversion of oils into biodiesel.
Źródło:
Polish Journal of Chemical Technology; 2014, 16, 1; 48-58
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Proposal of a methodology enabling application of the COPERT IV method to calculate air emissions from light and heavy duty vehicles, buses, motorcycles and mopeds in Poland
Autorzy:
TRELA, Mariusz
Powiązania:
https://bibliotekanauki.pl/articles/529732.pdf
Data publikacji:
2016
Wydawca:
Wyższa Szkoła Bankowa we Wrocławiu
Tematy:
COPERT IV method
pollutants emission
road transport
Opis:
The paper presents a method of preparation of statistical data in such a manner as to enable application of the COPERT IV method to calculate emissions resulting from the operation of light and heavy commercial vehicles, buses as well as motorcycles and mopeds. The paper also presents the results of calculations of emissions from these vehicles in Poland in 2014, made by means of the COPERT IV method with application of the proposed methodology. The results have been compared with data from emission inventories, and conclusions have been drawn concerning the reasonableness and possibility of applying the proposed methodology.
Źródło:
Central and Eastern European Journal of Management and Economics (CEEJME); 2016, 4; 281-292
2353-9119
Pojawia się w:
Central and Eastern European Journal of Management and Economics (CEEJME)
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Urban soil contamination with lead and cadmium in the playgrounds located near busy streets in Cracow (South Poland)
Autorzy:
Aleksander-Kwaterczak, U.
Rajca, A.
Powiązania:
https://bibliotekanauki.pl/articles/184374.pdf
Data publikacji:
2015
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
urban soil
heavy metals
traffic pollutants
playgrounds
Opis:
The pollution of urban soil with heavy metals caused by traffic activity is increasingly becoming a great threat to human health and environmental quality. This paper presents results of research of lead (Pb) and cadmium (Cd) distribution in land on playgrounds situated near busy streets in Cracow (Poland). Samples of sand and soil were collected from the most top layer (0–10 cm). Concentrations of examined metals are: Pb from 6.80 to 54.04 mg/kg and Cd from 1.60 to 2.61 mg/kg, respectively. The highest concentrations were found in sampling points near the busiest roads, and are particularly visible in the case of lead concentration in soil samples. For sand samples, metal concentrations are much lower. Although the results have not determined a high degree of soil’s contamination, they indicate the problem of the children’s exposure to toxic metals. Urban soil should be monitored particularly in such special places as playgrounds.
Źródło:
Geology, Geophysics and Environment; 2015, 41, 1; 7-16
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Studies on the Efficiency of Grundwater Treatment Process With Adsorption on Activated Alumina
Autorzy:
Szatyłowicz, E.
Skoczko, I.
Powiązania:
https://bibliotekanauki.pl/articles/123695.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
activated alumina
water treatment
adsorption
popular pollutants
Opis:
One of inorganic sorbents used in water treatment technology is activated alumina. It is recommended by the European Commission to remove inorganic impurities, such as arsenic, fluoride, selenium and silicates. The adsorbent is usually applied in a granular form, under flow conditions. It can become absorbent material, increasingly used due to the presence of arsenic beside iron and manganese in groundwater intakes. The aim of the study was to evaluate the effectiveness of groundwater treatment in the technological system containing adsorption on activated alumina. The experiment was performed on test model CE 581 manufactured by G.U.N.T. Hamburg, in which four treatment stages can be extracted. The first stage is used in a gravel filter of grain size 1–2 mm, in the second sand filter of grain size 0.4–0.8 mm. The third and fourth phase includes two adsorbers. The first adsorber comprises activated alumina (Al,sub>2O3) and the other comprises a granular activated carbon. The study was conducted at different speeds of filtration: 5, 10 and 15 m/h. In the raw water samples and the purified water samples after each treatment step the following parameters were determined: pH, O,sub>2 concentration, electrolytic conductivity, SO42-, concentration, NO3- concentration, PO43- concentration, Cl- concentration, color, turbidity, iron and manganese concentration, CODMn, total hardness, calcium hardness, magnesium hardness, content of dissolved substances. The conducted research indicates that optimum filtration rate for most pollution is 15 m/h. Moreover, the presence of activated alumina has contributed to increasing the efficiency of nitrate (V) and phosphate (V) ions removal.
Źródło:
Journal of Ecological Engineering; 2017, 18, 4; 211-218
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
3-Dimensional Surface Magnetic Susceptibility Distributions with Depth to Investigate Anthropogenic Pollutants Boundary in Abuja Metropolis
Autorzy:
Jatto, S. S.
Sule, P. O.
Ahmed, L. A.
Powiązania:
https://bibliotekanauki.pl/articles/184649.pdf
Data publikacji:
2016
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
vertical distribution
soil pollution
magnetic susceptibility
anthropogenic pollutants
Abuja
Opis:
Changes in the magnetic susceptibility of topsoil, especially in urban areas, are greatly affected by the deposition of anthropogenic metallic dust arising from industrial activities, the burning of fossil fuels, car wear, and tyre abrasion. In this study, magnetic susceptibility measurements were carried out in vertical soil profiles of 30.0 cm depth from the surface at 10.0 cm intervals in about 431 locations within the Abuja metropolis with a view to investigate the penetration ability of magnetic pollutants in the ground. From the obtained data, 3-D surface contour maps were plotted for different depths. The results show a magnetic susceptibility decrease from the surface down the ground to the depth of 30.0cm; most of the recorded susceptibilities were of an anthropogenic origin rather than pedogenic activities. This indicates that the anthropogenic dust depositions are mostly a surface phenomenon and may therefore not pose a risk to groundwater aquifers and near surface wells.
Źródło:
Geology, Geophysics and Environment; 2016, 42, 4; 443-448
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-25 z 234

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