Temat: Sludge - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Sludge as an agent improving soil properties
Autorzy:: Bartkowska, I
Powiązania:: https://bibliotekanauki.pl/articles/125365.pdf
Data publikacji:: 2013
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: sludge
digestion of sludge
sanitation of sludge
natural utilization of sludge
agent improving properties of sludge
Opis:: Sewage-treatment plants generate sludge which needs to be neutralized for legal, esthetical, and practical reasons. Economical and ecological concerns indicate that sludge, as long as it is possible, should be returned to the natural environment. The article presents the process of autothermal thermophilic aerobic digestion (ATAD) as a measure to produce biomass, which can be naturally utilized. The description of theoretical principles of the process in question is accompanied by presentation of an ATAD installation which has been functioning since 2009 at the municipal sewagetreatment plant in Olecko. Results of microbiological and chemical tests carried out in the years 2010–2012 have been analyzed. Examinations embraced sludge which was the final product of the aforementioned sewage-treatment plant.
Źródło:: Journal of Ecological Engineering; 2013, 14, 2; 63-67
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Analysis of the Quality of Stabilized Municipal Sewage Sludge
Autorzy:: Bartkowska, Izabela
Biedka, Paweł
Tałałaj, Izabela Anna
Powiązania:: https://bibliotekanauki.pl/articles/124921.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: autothermal thermophilic aerobic digestion
digestion of sludge
natural utilization of sludge
sludge
Opis:: The sludge management of many wastewater treatment plants in Poland has not been properly solved yet. The exploiters and designers often have to cope with the dilemma of choosing the method of processing and neutralizing sewage sludge. The method discussed in the article is only one of the options that fully fits in the trends of implementing good practices in the management of sewage sludge. It is a technologically and economically effective as well as environmentally friendly process. It contributes significantly to minimizing the amount of sewage sludge and allows the production of organic fertilizer instead of waste. The work discusses the quality of sewage sludge after autothermal thermophilic stabilization (ATAD). The results of investigations pertaining to the reaction of sludge, dry mass, dry organic matter, content of biogenic substances, calcium and magnesium compounds and heavy metals were analyzed.
Źródło:: Journal of Ecological Engineering; 2019, 20, 2; 200-208
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Assessment of the Influence of Evaporation and Evapotranspiration on the Volume of Sludge Accumulation in the Sludge Drying Beds
Autorzy:: Velychko, Svitlana
Dupliak, Olena
Powiązania:: https://bibliotekanauki.pl/articles/1839097.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: sludge drying beds
evaporation
evapotranspiration
sludge
sewage
Opis:: At present, the sludge drying beds of the Kyiv wastewater treatment plants are operated as a sludge accumulator in an emergency mode, practically without free volume. The purpose of the work was to determine the equation for the evaporation losses calculation from sludge drying beds and the required free volume for sludge accumulation for the next 7 years. The required free volume was calculated using the water budget method which takes into account evaporation from the water surface and evapotranspiration during the vegetation. The total losses from sludge drying beds is 1076 mm/year in normal year and is 920 mm/year in a cold year. The required free volume was calculated considering the trend of increasing average temperature over the last decade and considering the significant environmental risk. A correction was made for one unfavourable year with cold summer and warm winter and an additional rain rate of 1% probability. The additional free volume required is 3.24 million m3 for 7 years if all three sludge drying beds are operated.
Źródło:: Journal of Ecological Engineering; 2021, 22, 2; 63-69
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Changes in the C:N Ratio in the Sludge Treated with Natural Methods
Autorzy:: Wiater, Józefa
Powiązania:: https://bibliotekanauki.pl/articles/123064.pdf
Data publikacji:: 2020
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: carbon
nitrogen
sludge
processing
Opis:: The aim of the study was to evaluate the changes in the carbon/nitrogen ratio as a result of different natural methods of sewage sludge treatment from two municipal wastewater treatment plants. The sludge from the first treatment plant was poured into two lagoons, one covered with reed and the other with willow and a field with Californian earthworms. The sludge from the second treatment plant was composted with sawdust. The sludge processed with each method was simultaneously subjected to Effective Microorganisms. The samples of processed sludge from both treatment plants were collected three times. In the first one, after five weeks, four months and ten months from the beginning of treatment. The material from the second treatment plant was composted after four, ten weeks and a year of composting. In the samples taken, the total nitrogen content was determined by means of the Kjeldahl method. The determination of the organic carbon content was carried out on a TOC analyser. The C:N ratio was then calculated. It was found that the changes in the C:N ratio depended on the duration of individual processes, and to a lesser extent on the way they were processed. The carbon content during sludge processing increased or remained at a similar level and the nitrogen content decreased with time of their processing, regardless of the EM addition. The addition of Effective Microorganisms to the sludge treatment reduced the C:N ratio in the first period of time and increased this ratio to the optimal value after 10 months or a year. The best technology for sludge processing appeared to be the technology of heap composting with sawdust and with aeration. The ten-week compost had a suitable C/N ratio for use in lawn production.
Źródło:: Journal of Ecological Engineering; 2020, 21, 5; 240-245
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Bioługowanie metali ciężkich z odpadów pogalwanicznych przy neutralnym pH środowiska, w obecności bakterii produkujących biosurfaktanty
Bioleaching of heavy metals from galvanic wastes at neutral pH in the presence of biosurfactant producing bacteria
Autorzy:: Karwowska, E.
Andrzejewska-Morzuch, D
Powiązania:: https://bibliotekanauki.pl/articles/1819284.pdf
Data publikacji:: 2012
Wydawca:: Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:: microbial surfactants
sludge
extraction
acid
Opis:: Precipitates and sludges from the galvanic industry are one of the sources of the environment contamination with heavy metals. Therefore, the investigations are carried out in order to developer the effective method of metals elimination from these wastes. The promising results are obtained in case of the application of microbial leaching. Up to now results concerned mainly the metals bioleaching in acidic environment. In this research work the possibility of heavy metals removal from galvanic wastes using the culture of sulphur oxidizing bacteria (pH 2-4) and a mixed culture of both sulphur oxidizing bacteria and biosurfactant producing bacteria (pH 6.5-8) was examined. It allowed to compare the process effectiveness in acidic and neutral environment. The cultures were prepared based on the activated sludge from the municipal wastewater treatment plant. The presence of sulphur oxidizing bacteria Acidithiobacillus ferrooxidans was confirmed using the PCR method. Bacillus subtilis and B. cereus strains were applied as biosurfactant producers. Three galvanic wastes, different in grain size, water content and heavy metal concentration, were bioleached. The research revealed that the metal release from galvanic wastes was more effective in presence of biosurfactant, especially in case of copper, but also for cadmium and chromium. The process effectiveness in acidic condition was comparatively lower. Zinc was the only metal that was bioleached faster in acidic environment, with similar final metal removal after 25 days of the process. The maximum values of metals elimination in the presence of biosurfactant depended on the bioleached waste type and were: 7.1-100% for copper, 3.7-50.3% for zinc, 30-50.5% for chromium, 34.1-71.9% for cadmium. The effectiveness of the nickel and lead removal was lower than 5%. The prolongation of the bioleaching period up to 40 days in case of waste C (the less susceptible to the bioleaching) resulted in elimination of 67.9% of Cu, 34.7% of Zn, 100% of Cr and 39.1% of Pb, while the effectiveness of nickel removal was still very low.
Źródło:: Rocznik Ochrona Środowiska; 2012, Tom 14; 597-606
1506-218X
Pojawia się w:: Rocznik Ochrona Środowiska
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Study on the Composition and Environmental Impact of Sewage Sludge
Autorzy:: Jumasheva, Kamshat
Syrlybekkyzy, Samal
Serikbayeva, Akmaral
Nurbaeva, Farida
Kolesnikov, Alexandr
Powiązania:: https://bibliotekanauki.pl/articles/24201791.pdf
Data publikacji:: 2023
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: sludge
sewage treatment plant
wastewater
mapping
Opis:: The article examinee the characteristics of sewage sludge and its impact on the environment. The description of technical installations, sludge sites in the municipal wastewater treatment systems, which are sources of unfavorable sanitary and epidemiological condition of the studied territory, was presented. A detailed analysis of the structure, composition and morphology of sludge sediment was given. It was found that the sludge presents a loose, rough heterogeneous porous structure represented by the presence of a fibrous substrate with amorphous scaly-crystalline inclusions. During laboratory analyses of the composition of the dry residue, the presence of such types of heavy metals as chromium, manganese, nickel, copper, zinc, lead, cobalt, molybdenum, cadmium was revealed. The excess of permissible concentrations of various elements was observed: chromium more than 7.1 at MPC – 6.0 by 1.18 times; copper more than 3.3 at MPC – 3.0 by 1.1 times; zinc more than 27.3 at MPC – 23.0 by 1.18 times; lead more than 34.3 at MPC – 32.0 by 1.07 times; cobalt more than 6.4 at MPC – 5.0 by 1.28 times; molybdenum more than 6.9 at MPC – 5.0 by 1.3 times. Soil analysis revealed a pH of 7.1, which is neutral, may be optimal for plants; the concentration of calcium, iron and chromium does not exceed the established maximum permissible values. When analyzing the air environment of the territory of the treatment facilities, the presence of gaseous pollutants, such as methane, ammonia, nitrogen dioxide, hydrogen sulfide, carbon monoxide, was established. It has been established that anthropogenic sludge landfills are the sources that create a technogenic load on the atmospheric air, polluting it with methane, since the concentration of methane exceeds the MPC by more than 3 times.
Źródło:: Journal of Ecological Engineering; 2023, 24, 3; 315--322
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Recovery of Alum from Surabaya Water Treatment Sludge using Electrolysis with Carbon-Silver Electrodes
Autorzy:: Barakwan, Rizkiy Amaliyah
Hardina, Tyta Try
Trihadiningrum, Yulinah
Bagastyo, Arseto Yekti
Powiązania:: https://bibliotekanauki.pl/articles/123042.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: alum
drinking water
electrolysis
recovery
sludge
Opis:: Untreated alum sludge from Surabaya water treatment plant (WTP), which contained high concentration of alum was directly discharged into Surabaya River. It might cause problems because of the accumulation of aluminum in the lower part of the river. Alum could be recovered from the drinking water sludge using the electrolysis method. Aims of this study were to determine the optimum pH and electrical current for electrolysis using carbon-silver electrodes to recover aluminum coagulant from the sludge, and to determine the amount of the recovered alum. The sludge was acidified prior to electrolysis. Acidification was done by adding sulfuric acid at pH 3 and 4. Polarization test was conducted at 100, 200, and 300 mA, in order to determine the optimum electrical current. The electrolysis was performed in one compartment batch recirculation reactor, using silver as cathode and carbon as anode for 10 hours. Values of pH were measured every hour. The precipitated matter in the cathode was weighed, and analysed by means of Inductively Coupled Plasma. The optimum conditions of the electrolysis were achieved at initial pH 3 and electrical current 300 mA. The electrolysis resulted in the highest precipitate of 2.6112 g in the cathode.
Źródło:: Journal of Ecological Engineering; 2019, 20, 7; 126-133
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Contents of heavy metals in plants and soil fertilization of ash from sewage sludge combustion
Zawartość metali ciężkich w roślinach i glebie nawożonej popiołem ze spalania osadów ściekowych
Autorzy:: Iżewska, A.
Wołoszyk, C.
Powiązania:: https://bibliotekanauki.pl/articles/389407.pdf
Data publikacji:: 2013
Wydawca:: Towarzystwo Chemii i Inżynierii Ekologicznej
Tematy:: municipal sewage sludge
ash
sludge
Cd
Ni
Pb
plants
soil
komunalne osady ściekowe
popiół
osad
rośliny
gleba
Opis:: In the thesis assessed was fertilizing value of ashes from municipal sewage sludge combustion in grate furnace in Pomorzany Sewage Treatment Plant in Szczecin. The ash was treated as a substitute of phosphorus from phosphatic fertilizer because general content of this component exceeded 20 % of P2O5. In 2011–2012 a field experiment was conducted on a light soil. The scheme of the experiment included five objects of fertilizing corn for seeds and spring rape with mineral fertilizers (NK, NPK) and mineral fertilizers together with increasing doses of ash from municipal sewage sludge combustion (NK + P1, NK + P2, NK + P3). Substitution of phosphorus in a dose of NPK from superphosphate enriched with phosphorus from ash (P1, P2, P3) from municipal sewage sludge combustion did not cause any differences in the volume of corn seeds or corn stove or rapeseed straw, and in the object NK + P3 received were considerately richer crops with spring rape seeds than from any other objects. Ahs caused an increase in content of cadmium and nickel in seeds and straw, as for lead only in corn seeds, content of cadmium and lead in spring rape seeds and cadmium in straw. After two years of applying nitrogen and potassium as mineral fertilizers and ashes from municipal sewage sludge combustion, in comparison with exclusive fertilizing corn and spring rape with mineral fertilizers, an increase of lead in general soil content was observed, and general content of cadmium and nickel as well as their dissoluble form in 1 molHCl dm–3 in soil from all objects was similar.
W pracy podjęto próbę oceny wartości nawozowej popiołu pochodzącego ze spalania w piecu rusztowym komunalnych osadów ściekowych w Oczyszczalni „Pomorzany” w Szczecinie. Popiół potraktowano jako substytut fosforu z nawozów fosforowych, gdyż ogólna zawartość tego składnika przekraczała 20 % P2O5. W latach 2011–2012 przeprowadzono doświadczenie polowe na glebie lekkiej. Schemat badań obejmował pięć wariantów nawożenia kukurydzy na ziarno i rzepaku jarego nawozami mineralnymi (NK, NPK) oraz nawozami mineralnymi ze wzrastającymi dodatkami popiołu ze spalania komunalnych osadów ściekowych (NK + P1, NK + P2, NK + P3). Zastąpienie w dawce NPK fosforu z superfosfatu wzbogaconego fosforem z popiołu (P1, P2, P3) ze spalania komunalnych osadów ściekowych nie spowodowało istotnych różnic w wielkości plonu ziarna i słomy kukurydzy oraz słomy rzepaku jarego, a na obiekcie NK + P3, uzyskano istotnie większy plon nasion rzepaku niż z pozostałych obiektów. Stosowanie popiołu skutkowało zwiększoną zawartością kadmu i niklu w ziarnie i słomie, a ołowiu tylko w ziarnie kukurydzy oraz zawartości kadmu i ołowiu w nasionach rzepaku jarego i kadmu w słomie. Po dwóch latach stosowania azotu i potasu w postaci nawozów mineralnych i popiołu ze spalania komunalnych osadów ściekowych, w porównaniu z wyłącznym nawożeniem kukurydzy i rzepaku jarego nawozami mineralnymi, odnotowano zwiększenie całkowitej zawartości ołowiu w glebie, natomiast całkowita zawartość kadmu i niklu oraz ich form rozpuszczalnych w 1 mol HCl dm–3 w glebie wszystkich obiektów była podobna.
Źródło:: Ecological Chemistry and Engineering. A; 2013, 20, 9; 1019-1027
1898-6188
2084-4530
Pojawia się w:: Ecological Chemistry and Engineering. A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Participation of microorganisms in effluent transformation
Udział mikroorganizmów w przetwarzaniu osadów ściekowych
Autorzy:: Hołda, A.
Kisielowska, E.
Niedoba, T.
Powiązania:: https://bibliotekanauki.pl/articles/349268.pdf
Data publikacji:: 2010
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: osady ściekowe
mikroorganizmy
utylizacja
sludge
microorganisms
utilization
Opis:: The paper presents the chemical analysis as well quantitative and qualitative microbiological analysis of sludge stored in the area of municipal wastewater treatment plant. Furthermore, the influence of microorganisms on sludge properties was investigated. By application of ASA method, the following metals contents were determined: magnesium, calcium, lead, cadmium, copper, nickel, mercury and zinc. Furthermore, the biogenous factors were determined, as amonium nitrogen, overall nitrogen and phosphor. The influence of microorganisms on sludge was also investigated. To this purpose the results given from daily and 3-weekly sludge were compared. The conducted chemical analysis proved that after 3 weeks of storage, concentrations of heavy metals were lowered what may be caused by biochemical activity of microorganisms, which growing amount prove this observation.
W artykule przedstawiono analizę chemiczną oraz ilościową i jakościową mikrobiologiczną analizę osadów ściekowych składowanych w pobliżu oczyszczalni ścieków komunalnych. Zbadano także wpływ mikroorganizmów na właściwości osadów. Za pomocą metody ASA oznaczono zawartość następujących metali: magnezu, wapnia, ołowiu, kadmu, chromu, miedzi, niklu, rtęci i cynku oraz oznaczono wskaźniki biogenne, takie jak azot amonowy, ogólny oraz fosfor. Zbadano również wpływ mikroorganizmów na osady ściekowe, w tym celu porównano wyniki oznaczeń uzyskane z osadu dobowego i trzytygodniowego. Przeprowadzona analiza chemiczna wykazała, że po 3 tygodniach składowania stężenia metali uległy zmniejszeniu, co może być spowodowane przez biochemiczną działalność mikroorganizmów, których wzrastająca ilość zdaje się to potwierdzać.
Źródło:: Górnictwo i Geoinżynieria; 2010, 34, 4/1; 79-86
1732-6702
Pojawia się w:: Górnictwo i Geoinżynieria
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Alkaline Leaching of Low Zinc Content Iron-Bearing Sludges
Autorzy:: Gargul, K.
Jarosz, P.
Małecki, S.
Powiązania:: https://bibliotekanauki.pl/articles/355782.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: sludge
dust
alkaline leaching
Zn recovery
recycling
Opis:: Various types of waste materials containing zinc (e.g. dusts and sludges from gas dedusting process) are obtained in steel industry. The contents of Zn in these materials may vary considerably. Even a low concentration of zinc in recirculated products precludes their recycling in ferrous metallurgy aggregates. Long storage of this type of material can lead to contamination of soil and water by zinc compounds which can be leached out by acid rain, for example. This paper focuses on research involving alkaline leaching tests of low zinc content iron-bearing materials. These tests were preceded by the analysis of the elemental, phase and grain size composition, and analysis of the thermodynamic conditions of the leaching process. The main aim of research was to decrease the content of the zinc in the sludge to the level where it is suitable as an iron-bearing material for iron production (~1% Zn). Leaching at elevated temperatures (368 K, 60 min) has led to a decrease in the zinc content in the sludge of about 66%. The research revealed that long hour leaching (298 K, 100 hours) carried out at ambient temperatures caused a reduction in zinc content by 60% to the value of 1.15-1.2% Zn.
Źródło:: Archives of Metallurgy and Materials; 2016, 61, 1; 43-50
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Application of ionizing radiation to environment protection
Autorzy:: Chmielewski, A.
Powiązania:: https://bibliotekanauki.pl/articles/147932.pdf
Data publikacji:: 2005
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: electron accelerator
gamma rays
flue gas
wastewater
sludge
Opis:: Radiation technology may contribute to the environmental protection to a great extent. Electron beam industrial installations for flue gases containing SOx and NOx treatment have been already built in China and Poland. The same technology for high sulphur and high humidity off-gases (low quality lignite) has been successfully tested in an industrial pilot plant in Bulgaria. Pilot plant tests performed in Japan have illustrated that by applying electron beam for municipal waste incinerator off-gases treatment the concentration of dioxins can be reduced by 80%, other persistent organic pollutants can be depredated as well. The positive results of electron beam wastewater treatment are the basis for a full-scale industrial plant being built in the South Korea. A pilot gamma plant for sludge irradiation producing a high grade organic fertilizer is in operation in India. All these achievements are reported in this paper.
Źródło:: Nukleonika; 2005, 50,suppl.3; 17-24
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Effect of two-stage thermal disintegration on particle size distribution in sewage sludge
Autorzy:: Kaczmarek, A. M.
Gaca, J.
Powiązania:: https://bibliotekanauki.pl/articles/777862.pdf
Data publikacji:: 2013
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:: laser diffraction
particle size distribution
sludge
thermal hydrolysis
Opis:: The effect of two-stage thermal disintegration of sewage sludge on the particle size distribution using laser diffraction method has been studied. The sludge was sampled from municipal sewage treatment plant after each stage of disintegration. The first stage of disintegration known as homogenization proceeds at temperature of 70-90°C and pressure of 3 bar, the second stage called thermal hydrolysis was performed at temperature of 160-170°C and pressure of 6 bar. It was found that the first stage of disintegration has the strongest impact on the reduction of the sludge particle size and changes in chemical properties. The maximum size of the particles from raw sewage before disintegration was 310 μm. After first stage of the process average size of the particles was 250 μm, and during the second stage it was reduced to 226 μm. Sludge disintegration degree (DDCOD) of 59% confirms high effectiveness of the process. We established that the redox potential (Eh) of sludge effluents was changed after each step of the studied process. Furthermore, chemical oxygen demand (COD) increases which leads to the conclusion that resizing of floccules is accompanied by hydrolysis.
Źródło:: Polish Journal of Chemical Technology; 2013, 15, 3; 69-73
1509-8117
1899-4741
Pojawia się w:: Polish Journal of Chemical Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Solidification of Sludge from Waste Water Treatment
Zestalanie osadów z oczyszczania ścieków
Autorzy:: Korotenko, E.
Hendrych, J.
Masin, P.
Powiązania:: https://bibliotekanauki.pl/articles/318854.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Przeróbki Kopalin
Tematy:: stabilizacja
zestalanie
szlam
odciek
stabilization
solidification
sludge
leachate
Opis:: This paper is aimed to the stabilization/solidification of sludge from wastewater treatment. Wastewater arised from illegal handling with waste galvanic sludge contacted by the silage waters. Treated sludge contained high amount of heavy metals and dissolved organic substances and inorganic salts. Solidificates were leached according to standardized method ČSN EN 12457-4 and assessed in accordance with Decree no. 294/2005 Coll. High content of dissolved organic carbon content (DOC) and total dissolved solids (TDS), which is expected with regard to the character and origin of analyzed/processed sludge, were critical indicators. Required legislative limits were met only if the ratio of the binder to the sludge was sufficiently large, namely for the series of untreated sludge (K0) and pre-treated sludge (K1, K2) this ratio was 80/20, for the sludge pre-treated by sludge filter press (N) 60/40. Heavy metals were stabilized with high efficiency were not critical in relation to the legislative limits. For the considered mixtures the costs were estimated.
W artykule przedstawiono wyniki badań nad stabilizacją (zestaleniem) osadów z oczyszczania ścieków. Ścieki pochodziły z nielegalnego zrzutu z galwanizerni. Poddany obróbce szlam zawierał duże ilości metali ciężkich i rozpuszczone substancje organiczne oraz sole nieorganiczne. Fazę stałą ługowano zgodnie ze znormalizowaną metodą ČSN EN 12457-4 i ocenione zgodnie z rozporządzeniem nr 294/2005 Coll. Wysoka zawartość rozpuszczonego węgla organicznego (DOC) i całkowitą ilością rozpuszczonej fazy stałej (TDS), które decydują o jakości osadu (szlamu). Limity określone w stosownym rozporządzeniu były spełnione tylko wtedy, gdy stosunek osadu do całkowitej objętości ścieków był wystarczająco duży, a mianowicie dla nieoczyszczonego szlamu (K0) i szlamu poddanego wstępnej obróbce (K1, K2) ten stosunek wynosił 80/20, dla szlamu poddanego wstępnej obróbce na prasie filtracyjnej (N) 60/40. Zawartość metali ciężkich ustabilizowała się na wysokim poziomie, wydajność nie przekraczała wartości krytycznych określonych w ustawie. Dla badanych osadów oszacowano koszty odwadniania i przeróbki.
Źródło:: Inżynieria Mineralna; 2018, R. 19, nr 1, 1; 103-110
1640-4920
Pojawia się w:: Inżynieria Mineralna
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Chemical Interactions to Cleanup Highly Polluted Automobile Service Station Wastewater by Bioadsorption-Coagulation-Flocculation
Autorzy:: Banchon, C.
Castillo, A.
Posligua, P.
Powiązania:: https://bibliotekanauki.pl/articles/124468.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: adsorption
agricultural wastes
bagasse
coconut coir
sawdust
sludge
Opis:: The present study addresses an ecofriendly solution to treat automobile service stations effluents with high concentrations of oily substances, surfactants, organic matter and heavy metals. Bioadsorption using sawdust from pine trees, sugar cane bagasse and coconut coir without any chemical modification removed colloidal contamination up to 70%. Polyaluminium chloride, ferric chloride and polyacrylamide were applied to remove dissolved and colloidal pollutants under saline conditions without change of initial pH. Both bioadsorption and coagulation-flocculation removed up to 97.8% of BOD, COD, surfactants and heavy metals at a saline concentration of 1.5% NaCl. The increase of ionic strength promoted a high sludge index and a representative cost saving in chemicals consumption of almost 70%. High levels of pollution removal with the minimal use of chemicals is herein presented.
Źródło:: Journal of Ecological Engineering; 2017, 18, 1; 1-10
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Preliminary study of hot mix asphalt containing water treatment and sewage sludge
Autorzy:: Bastidas-Martínez, J. G.
Camapum de Carvalho, J.
Lucena, L. C.
Farias, M. M.
Rondón-Quintana, H. A.
Powiązania:: https://bibliotekanauki.pl/articles/230585.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: osad
uzdatnianie wody
osad ściekowy
wypełniacz mineralny
mieszanka asfaltowa gorąca
water treatment
sludge
sewage sludge
mineral filler
hot mix asphalt
Opis:: Throughout the world, considerable quantities of water treatment sludge (WTS) and sewage sludge (SS) are produced as waste. This study assessed in the laboratory, the possibility to use both waste products when they are incorporated as filler at 1% with relation to the total mass of a hot mix asphalt - HMA. To this end, both waste products were initially reduced to ash through a calcination process. Resistance tests under monotonic load (Marshall and indirect tension tests), and cyclic load (resilient modulus test) were applied on mixes that contained WTS and SS. Besides, moisture damage (modified Lotmman test), and abrasion (Cantabro) resistance were assessed. An analysis of variance (ANOVA) test was performed in order to verify if the results are statically equal or not to those of the control HMA. As a general conclusion, it is reported that both materials show a resistance increase under monotonic load and higher stiffness under cyclic load (cohesion) when they are incorporated into the mix as filler despite the fact that the asphalt content used was less than the control mix. However, some problems are observed associated with moisture damage resistance, and friction wear (adherence).
Źródło:: Archives of Civil Engineering; 2020, 66, 1; 225-240
1230-2945
Pojawia się w:: Archives of Civil Engineering
Dostawca treści:: Biblioteka Nauki

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