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Tytuł:
The State and Needs of the Development of Water Supply and Sewerage Infrastructure in The Radzyń District
Autorzy:
Bogusz, Monika
Marzec, Michał
Malik, Arkadiusz
Jóźwiakowski, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/123674.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
water supply network
sewerage network
collective wastewater treatment plants
household wastewater treatment plants
Opis:
The paper presents the current state of water supply and sewerage infrastructure and the need for its expanding in Radzyń district. The district is located in the northern part of Lublin Voivodeship in Poland. The following communes belong to Radzyń district: the municipal commune of Radzyń Podlaski and 7 rural communes: Borki, Czemierniki, Kąkolewnica, Komarówka Podlaska, Radzyń Podlaski, Ulan-Majorat, Wohyń. The data show that the water supply network in Radzyń district is well developed. The most significant percentage of the population using the water supply network has the rural commune of Radzyń Podlaski – 99.9%, while the smallest, commune Komarówka Podlaska – 54.5%. The survey showed that there was a very large disproportion between the development of the sewerage and water supply systems. The largest percentage of the population using the sewerage network has the municipal commune of Radzyń Podlaski – 99.7%. The smallest percentage of users of collective sewage disposal systems was recorded in the rural commune of Radzyń Podlaski (7.2%). The commune of UlanMajorat does not have a sewerage system. The survey conducted in 2016 shows that 8 collective wastewater treatment plants operated in Radzyń district at that time. The total capacity of the treatment plants is over 5,300 m3/d. In 2016, Radzyń district had about 1,000 household wastewater treatment plants. The presented data show that the condition of the sanitary infrastructure in rural communes of Radzyń district is unsatisfactory and requires the investment activities mainly aimed at expanding collective sewage disposal and treatment systems as well as developing a network of household wastewater treatment plants.
Źródło:
Journal of Ecological Engineering; 2020, 21, 3; 171-179
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dewatering of conditioned sludge in small wastewater treatment plants
Autorzy:
Wolny, L.
Powiązania:
https://bibliotekanauki.pl/articles/207409.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
wastewater treatment
dewatering
filtration
polyelectrolytes
sewage sludge
sewage treatment
sewage treatment plants
water treatment plants
municipal wastewater treatment plants
wastewater treatment plants
oczyszczanie ścieków
odwadnianie
filtrowanie
polielektrolity
osady ściekowe
oczyszczalnie ścieków komunalnych
oczyszczalnie ścieków
Opis:
Parameters characterizing the dewatering process of sewage sludge in small wastewater treatment plants (WWTPs) have been analyzed. Two municipal wastewater treatment plants of comparable capacity and similar technology of sewage treatment were selected to the analysis. Comparison of dewaterability of unprepared and conditioned sludge was made. During preliminary tests, the capillary suction time (CST) of sludge conditioned with cationic polyelectrolyte was determined. Next, for the optimal doses of selected polyelectrolyte, more detailed technological experiments were conducted such as vacuum filtration and susceptibility to the gravitational thickening. Tested sludge had very low susceptibility to thickening. The final volume of unprepared tested samples after 2 hour thickening was 977.0 cm3, while the initial volume of thickened sludge was 1000 cm3.The lowest value of final hydration for conditioned sludge was 64.0%.
Źródło:
Environment Protection Engineering; 2015, 41, 2; 99-105
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Condition of the Sanitary Infrastructure in the Ryki District in Poland and the Need for its Development
Autorzy:
Jóźwiakowska, Karolina
Micek, Agnieszka
Kanios, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/1839635.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
district
septic tank
household wastewater treatment plants
collective wastewater treatment plants
water supply network
sewage system
Opis:
The aim of this paper was to present the current state and the need for development of the sanitary infrastructure in the communes of the Ryki District located in the Lublin Voivodeship. The Ryki District encompasses 1 urban Commune – Dęblin, 1 urban-rural Commune – Ryki and 4 rural communes: Kłoczew, Nowodwór, Stężyca and Ułęż. The paper is based on the data from the surveys conducted in all the afore-mentioned communes in 2016. In the whole district on average 71.3% of the population used the water supply network, while 42% of the inhabitants were able to discharge wastewater to the sewage system. Within the area of the Ryki District, 5 collective wastewater treatment plants with a capacity exceeding 5 m3/d functioned in 2016. The households which were not connected to the sewage network discharged wastewater mainly to non-return tanks. About 440 household sewage treatment plants were found in the surveyed communes. The overwhelming majority of such small objects in the discussed district were activated sludge systems (92%). The research carried out in 2016 proved a strong need to develop the current state of the sanitary infrastructure in the Ryki District. A particular emphasis should be placed on the wastewater management by connecting the inhabitants of urban areas to a joint sewage disposal system. Ecological awareness must be raised so as to encourage people to invest in household wastewater treatment plants, which should be used in the areas with scattered development.
Źródło:
Journal of Ecological Engineering; 2021, 22, 4; 256-264
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Condition of the Sanitary Infrastructure in the Bialski District in Poland and the Need for its Development
Autorzy:
Jóźwiakowska, Karolina
Marzec, Michał
Powiązania:
https://bibliotekanauki.pl/articles/124925.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
district
septic tank
household wastewater treatment plants
collective wastewater treatment plants
water supply network
sewerage system
Opis:
The aim of this paper was to present the current state and the need for development of the sanitary infrastructure in the communes of the Bialski District located in the Lublin Voivodeship. The Bialski District encompasses 2 urban communes: Miedzyrzec Podlaski and Terespol and 17 rural communes: Biała Podlaska, Drelów, Janów Podlaski, Kodeń, Konstantynów, Leśna Podlaska, Łomazy, Międzyrzec Podlaski, Piszcząc, Rokitno, Rossosz, Sławatycze, Sosnówka, Terespol, Tuczna, Wisznice and Zalesie. The present paper uses the data from the surveys conducted in these communes in 2016. On average, 79.2% of the population used the water supply system in the surveyed communes, while 39.4% of the inhabitants had the possibility of discharging wastewater to the sewerage system. In the area of the communes, there were 20 collective, mechanical and biological wastewater treatment plants with a capacity exceeding 5 m3/d. The households which were not connected to the wastewater network, discharged wastewater mainly to non-return tanks. In the surveyed communes, there were 4437 household wastewater treatment plants. Most of them (above 80%) were the systems with infiltration drainage, which do not ensure high efficiency of pollutants removal and may even contribute to the degradation of the groundwater quality. In order to solve the existing problems of wastewater and water management occurring in the communes where the Bialski District is located, it is necessary to further develop collective wastewater systems and equip the areas characterized by dispersed housing with highly efficient household treatment plants, e.g. constructed wetlands.
Źródło:
Journal of Ecological Engineering; 2020, 21, 5; 155-163
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Unieszkodliwianie ścieków z obiektów użyteczności publicznej na terenach niezurbanizowanych
Neutralizing wastewater from public utilities on rural areas
Autorzy:
Bugajski, P.
Chmielowski, K.
Kurek, K.
Powiązania:
https://bibliotekanauki.pl/articles/950007.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
ścieki
oczyszczanie
skuteczność
wastewater
treatment plants
efficiency
Opis:
Celem badań było określenie możliwości wykorzystania przydomowych oczyszczalni ścieków, których reaktory biologiczne pracują w technologii osadu czynnego do unieszkodliwiania zanieczyszczeń odprowadzanych ze szkół na terenach wiejskich. Na podstawie wybranych wskaźników zanieczyszczeń takich jak: BZT , ChZT, zawiesina ogólna, azot ogólny oraz fosforany scharakteryzowano skład ścieków surowych odpływających z obiektów użyteczności publicznej oraz jakość ścieków oczyszczonych z podziałem na dni z zajęciami szkolnymi i dni wolne od zajęć. Analiza wyników badań wykazała, iż dla potrzeb unieszkodliwiania ścieków z obiektów użyteczności publicznej takich jak szkoły; można stosować przydomowe oczyszczalnie ścieków, których działanie oparte jest na osadzie czynnym.
The research aimed at determining a potential use of domestic sewage treatment plants based on activated sludge for the disposal of wastes drained from schools in rural areas. Selected pollutant indicators, such as: BOD , COD, total suspended solids, total nitrogen and phosphates were the basis for determining the composition of raw sewage discharged by public utility objects and the quality of treated sewage considering the days when lessons were taking place at school and days free from classes. The analysis of the results revealed that household sewage treatment plants based on activated sludge may be used for waste disposal from public facilities, such as schools.
Źródło:
Inżynieria Ekologiczna; 2015, 44; 178-183
2081-139X
2392-0629
Pojawia się w:
Inżynieria Ekologiczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wastewater reuse
Autorzy:
Wilas, Janusz
Draszawka-Bołzan, Beata
Cyraniak, Emil
Powiązania:
https://bibliotekanauki.pl/articles/1119300.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
small wastewater treatment plants
technology selection
wastewater reuse
Opis:
Once freshwater has been used for an economic or beneficial purpose, it is generally discarded as waste. In many countries, these wastewaters are discharged, either as untreated waste or as treated effluent, into natural watercourses, from which they are abstracted for further use after undergoing "self-purification" within the stream. Through this system of indirect reuse, wastewater may be reused up to a dozen times or more before being discharged to the sea. Such indirect reuse is common in the larger river systems of Latin America. However, more direct reuse is also possible: the technology to reclaim wastewaters as potable or process waters is a technically feasible option for agricultural and some industrial purposes (such as for cooling water or sanitary flushing), and is a largely experimental option for the supply of domestic water. Wastewater reuse for drinking raises public health, and possibly religious, concerns among consumers. The adoption of wastewater treatment and subsequent reuse as a means of supplying freshwater is also determined by economic factors. Human excreta and wastewater contains useful materials. These are water, organic carbon and nutrients and should be regarded as a resource. In their natural cycles, they are broken down by micro-organisms and become accessible to plants and animals, thus sustaining natural ecosystems. When improperly disposed, these substances can cause pollution. This is because the organic materials exert oxygen demand, and the nutrients promote algal growth in lakes, rivers and near-shore marine environments. Human excreta and wastewater also contain pathogens. Reuse of the wastes must ensure that public health is maintained. Planned reuse is the key to wastewater reuse. Planning for reuse ensures that public health and protection of the environment are taken into account. Reuse of treated wastewater for irrigation of crops, for example, will need to meet (i) standards for indicator pathogens, and (ii) plant requirement for water, nitrogen and phosphorus. WHO and others have developed standards for reuse of wastewater for various purposes. Further details of these standards can be found in the Regional Overviews in the Source Book, published by IWA and IETC. It must be pointed out, however, that requirements for water and nutrients are plant-specific and site-specific (dependent on soil type and climate), and information on these requirements need to be obtained from local information sources.
Źródło:
World News of Natural Sciences; 2016, 5; 33-41
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Connecting Castings for Operation under Conditions of Cyclic Temperature Changes
Autorzy:
Drotlew, Andrzej
Piekarski, Bogdan
Powiązania:
https://bibliotekanauki.pl/articles/107011.pdf
Data publikacji:
2020
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
castings for heat treatment plants
grates
pillars
thermal fatigue
Opis:
The separable connections used in technological equipment of heat treatment furnaces (OTP) are described in this study. The equipment is used for the heat treatment of charges, i.e. for the thermal and thermo-chemical treatment of parts of machines and devices. OTP is used for the charge formation and its transport before, during and after heat treatment operations. Accessories of this type are usually compact structures composed of several or several dozen cast elements. The main components are grates and pillars, which form an outer contour of the OTP and also allow for the correct arrangement of heat-treated parts. To form a relatively rigid structure composed of the grates and pillars, it is necessary to join these components together. For this purpose, various types of separable connections are used, mainly of a cylindrical shape with threaded parts. The subject of this study is focused on the construction and operating conditions of typical OTP structures, as well as the methods of fastening the pillar in a grate, i.e. on the design of the bottom part of the pillar and the hole in the grate in which this pillar is embedded.
Źródło:
Journal of Casting & Materials Engineering; 2020, 4, 1; 16-21
2543-9901
Pojawia się w:
Journal of Casting & Materials Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wastewater treatment technologies
Autorzy:
Wilas, Janusz
Draszawka-Bołzan, Beata
Daniszewski, Piotr
Cyraniak, Emil
Powiązania:
https://bibliotekanauki.pl/articles/1119310.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
BOD
COD
TSS
small wastewater treatment plants
technology selection
Opis:
The article presents an application of multi-criteria analysis for selection of the best treatment technology and the best technical solution to the running of a large and a small wastewater treatment plant. The calculations performed for two plant capacities and for various effluent standards are based on a compromise programming method. The effluent standards considered for the smaller plant are only BOD5, COD and TSS, while for the larger plant also nitrogen and phosphorus. For each plant’s capacity, three different treatment technologies are analyzed. The analyzed technologies included biofilters, continuous and cyclic activated sludge, rotating biological contactors and natural treatment methods. The selection of the best technology is done with a define set of sustainability criteria that can be easily modified and adjusted to specific local conditions. The proposed method can be used for selection of the best treatment technology and the most appropriate technical solution from a sustainability standpoint, at the stage of wastewater system planning and designing, as well as for evaluation of already operating plants.
Źródło:
World News of Natural Sciences; 2016, 4; 33-43
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structures for Heat Treatment Assembled from Cast Elements
Autorzy:
Piekarski, Bogdan
Drotlew, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/1445040.pdf
Data publikacji:
2020
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
castings for heat treatment plants
design of castings
grates
Opis:
Various types of technological equipment individually designed for operation in pit and elevator heat treatment furnaces are described in this article. A common characteristic of these structures is that they are composed of several or several dozen thin-walled elements of various shapes and sizes, gravity cast in sand moulds from creep-resistant alloys (austenitic Cr-Ni/Ni-Cr cast steel and cast nickel alloys). The design of the castings requires the development of a manufacturing technology that can effectively use the principle of the simultaneous solidification of all components. Properly designed equipment should have minimum weight, maximum strength, and maximum loading capacity combined with adequate durability and reliability. Two designs of the equipment for the heat treatment of steel parts were presented. Both designs, as well as their individual components, were described in detail and illustrated. The main task of the equipment is to form the charge in the furnace and transport this charge both inside and outside the furnace. The first design is the design of an equipment for the heat treatment of large ring-shaped parts. The second design is the design of an equipment, whose structure can be modified using various repeatable components. As a result of these modifications, different variants of the equipment are obtained, allowing for the heat treatment of five different types of the shafts characterized by different shapes and sizes. The study is of an application nature. It is addressed to engineering and technical staff dealing with both the design and operation of heat treatment furnaces.
Źródło:
Journal of Casting & Materials Engineering; 2020, 4, 4; 53-57
2543-9901
Pojawia się w:
Journal of Casting & Materials Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improving the operation of the full scale wastewater treatment plant with use of a complex activated sludge model
Autorzy:
Liwarska-Bizukojc, E.
Biernacki, R.
Gendaszewska, D.
Ledakowicz, S.
Powiązania:
https://bibliotekanauki.pl/articles/207994.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
activated sludge
effluents
wastewater treatment
water treatment plants
biological waste water treatment
wastewater treatment plants
osad czynny
ścieki
stacje uzdatniania wody
biologiczne oczyszczanie ścieków
oczyszczalnie ścieków
Opis:
A complex activated sludge model implemented in BioWin software has been implemented to assure its predictability and improve the effectiveness of biological wastewater treatment in the full-scale plant in Poland. The influence of temperature and sludge retention time (SRT) on the quality of the effluent was also studied. The calibration was successfully performed according to the Good Modelling Practice Unified (GMP) protocol. Five parameters at a steady state and ten under dynamic conditions were calibrated. It occurred that in the studied wastewater treatment plant SRT should be kept at the low level sufficient to sustain nitrification.
Źródło:
Environment Protection Engineering; 2013, 39, 1; 183-195
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prawne aspekty funkcjonowania przydomowych oczyszczalni ścieków
Legal aspects of sewage treatment plants
Autorzy:
Wawrentowicz, D.
Ignatowicz, G.
Sadowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/908489.pdf
Data publikacji:
2013
Wydawca:
Fundacja Ekonomistów Środowiska i Zasobów Naturalnych
Tematy:
przydomowe oczyszczalnie ścieków
prawne aspekty przydomowych oczyszczalni ścieków
household wastewater treatment plant
legal aspects of the wastewater treatment plants
standards of the wastewater treatment plants
Opis:
W ustawie – Prawo Wodne zapisano regulację prawną dotyczącą udoskonalenia odprowadzania ścieków do wód gruntowych. W Polsce ogromna liczba budynków mieszkalnych czy też gospodarczych jest rozproszona, co utrudnia budowanie zbiorczych oczyszczalni ścieków. Osoby posiadające takie budynki powinny budować przydomowe oczyszczalnie ścieków. Gminy coraz częściej ustawowo proponują dopłaty do tego typu inwestycji, co z jednej strony zwalnia ich z obowiązku budowy zbiorowych oczyszczalni, a drugiej zabezpiecza troskę o ochronę środowiska na własnym terenie. Każda oczyszczalnia powinna spełniać zarówno wymogi formalne jak też wymogi ochrony środowiska.
Owners of scattered households are more often finding out building household wastewater treatment plants useful. Polish legislation has been fitted to the European Union’s law in this aspect, however there is a lack of appropriate tools to control over newly build household wastewater treatment plants. Local governments shows more financial support for those households, which are going to build household wastewater treatment plants, and at the same way making the contribution in protecting the environment. Rules of the building law, and the water law as equal are, clearly require certain responsibilities on households on the range of those types of wastewater treatment plants. Rules are making requirements for manufacturers of those wastewaters very clearly. Those must have reach minimal quality standards, every reservoir must go under proper certification. If all those parameters are going to be respected by the manufactureres and the users, so as local governments, then the environmental protection in this matter will be uphold.
Źródło:
Ekonomia i Środowisko; 2013, 3; 117-125
0867-8898
Pojawia się w:
Ekonomia i Środowisko
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena pracy przydomowych oczyszczalni ścieków BIO-DUO w pierwszych miesiącach eksploatacji
Evaluation sewage treatment plants BIO-DUO in the first months of operation
Autorzy:
Jakubaszek, A.
Stadnik, A.
Powiązania:
https://bibliotekanauki.pl/articles/371857.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
oczyszczanie ścieków
przydomowe oczyszczalnie ścieków
wskaźniki zanieczyszczeń
wastewater treatment
sewage treatment plants
Opis:
W artykule przedstawiono wyniki badań podstawowych wskaźników zanieczyszczeń w ściekach z przydomowych oczyszczalni ścieków BIO-DUO firmy Sotralentz. Obiektami badań były oczyszczalnie zlokalizowane w województwie dolnośląskim na terenie gminy Bardo. Badania prowadzono w pierwszym półroczu eksploatacji obiektów. Analizie poddano ścieki oczyszczone odprowadzane do odbiorników, którymi są studnie chłonne lub rowy melioracyjne. Na podstawie uzyskanych wyników badań wykazano, że w większości przebadanych obiektów już po 4 tygodniach eksploatacji wartości wskaźników zanieczyszczeń w ściekach oczyszczonych nie przekraczały stężeń dopuszczalnych. Część oczyszczalni wymagała dłuższego okresu wypracowania i regulacji ilości powietrza dostarczanego do reaktora. Ponowne badania wykazały poprawę pracy oczyszczalni oraz spełnienie wymagań określonych w Rozporządzeniu Ministra Środowiska.
The article presents the results of the basic indicators of pollutants in sewage from domestic wastewater treatment plants BIO-DUO company Sotralentz. Research sewage treatment facilities were located in the Dolnośląskie Province in the municipality of Bardo. The study was conducted in the first half operation of facilities. We analyzed effluent discharged into the receivers, which are cesspools or drainage ditches. Based on the results of research it has shown that in most studied objects after 4 weeks of life indicator values of pollutants in treated wastewater does not exceed concentration limits. Part of the sewage require a longer period and regulating the amount of air supplied to the reactor. Re study showed improvement in plant operation and fulfillment of requirements specified in the Ordinance of the Minister of the Environment.
Źródło:
Zeszyty Naukowe. Inżynieria Środowiska / Uniwersytet Zielonogórski; 2015, 160 (40); 45-55
1895-7323
Pojawia się w:
Zeszyty Naukowe. Inżynieria Środowiska / Uniwersytet Zielonogórski
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Minimalizacja hałasu środowiskowego na przykładzie oczyszczalni ścieków w Sztumie
Environmental noise minimization with an example of sewage treatment plant in Sztum
Autorzy:
Sadowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/2071817.pdf
Data publikacji:
2012
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
oczyszczalnie ścieków
minimalizacja hałasu
sewage treatment plants
minimization of noise
Opis:
W oparciu o badania własne przedstawiono możliwości ograniczenia hałasu powstającego na terenie oczyszczalni ścieków w Sztumie do dopuszczalnych norm. Stwierdzono, że głównym źródłem hałasu były dmuchawy powietrza, a hałas był emitowany w porze dziennej i nocnej do stref chronionych (osiedle domków jednorodzinnych). Przeprowadzono pomiary akustyczne hałasu w pomieszczeniach stdcji dmuchaw i w otoczeniu oczyszczalni oraz wypromieniowanego do środowiska zewnętrznego w obszarze chronionym Przedstawiono kilka wariantów rozwiązania problemu, dokonano wyboru wariantu optymalnego oraz wykazano efekty ekologiczne po jego wdrożeniu.
According to the classification of waste in physical terms, noise and vibrations are wastes that are harmful to health and environment. The paper presents, based on author's own research, possibilities of limiting the noise generated at the sewage treatment plant in Sztum which are emitted to protected areas (inhabited by the users) during day and night to the acceptable standards. Several variants of problem solving, a choice of optimal variant and ecological effects resulting from its implementation are presented.
Źródło:
Inżynieria i Aparatura Chemiczna; 2012, 5; 251-253
0368-0827
Pojawia się w:
Inżynieria i Aparatura Chemiczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ultrasonic intensification of aerobic stabilization of sewage sludge
Ultradźwiękowa intensyfikacja stabilizacji tlenowej osadów ściekowych
Autorzy:
Sorys, P.
Zielewicz, E.
Powiązania:
https://bibliotekanauki.pl/articles/396518.pdf
Data publikacji:
2007
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
osady ściekowe
biologiczna oczyszczalnia ścieków
sewage sludge
wastewater treatment plants
Opis:
The aerobic stabilization of excess sewage sludge using low frequency ultrasound (25kHz) was investigated. The mechanically thickened excess sludge was obtained from full-scale wastewater treatment plants. The samples of sewage sludge were prepared by dissolving drinking water to obtain initial total solid concentration of 1800 mg/dm3. Five samples were treated with ultrasound of different power per sample volume: 3,12; 6,25; 12,5; 25,0 and 50,0 Wh/l. The experiments show that ultrasonic pre-treatment with 50 Wh/dm3 power increases the digestion of organic matter in aerobic stabilization of sewage sludge.
Badano wpływ wstępnej obróbki osadu nadmiernego polem ultradźwiękowym o częstotliwości 25 kHz na przebieg procesu stabilizacji tlenowej. Osad do badań pochodził z rzeczywistego obiektu biologicznej oczyszczalni ścieków. Pobrano osad zagęszczony mechanicznie a następnie rozcieńczono go wodą wodociągową osiągając koncentrację suchej masy ok. 1800 mg/l. Pięć tak przygotowanych prób poddano nadźwiękawianiu aby zapewnić odpowiednie ilości włożonej energii w objętość próby: 3,12; 6,25; 12,5; 25,0 i 50,0 Wh/l. Badania wykazały znaczny wzrost mineralizacji masy organicznej osadu przy wstępnym preparowaniu polem ultradźwiękowym dla 50 Wh/I włożonej energii.
Źródło:
Civil and Environmental Engineering Reports; 2007, 2; 71-79
2080-5187
2450-8594
Pojawia się w:
Civil and Environmental Engineering Reports
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Waste management plants with process lines for production of substitute fuels for cement industry as a solution to waste problem in the Świętokrzyskie region
Zakłady zagospodarowania odpadów z liniami technologicznymi do produkcji paliw zastępczych dla przemysłu cementowego sposobem na rozwiązanie problemu odpadowego w województwie świętokrzyskim
Autorzy:
Spurek, G.
Powiązania:
https://bibliotekanauki.pl/articles/402149.pdf
Data publikacji:
2010
Wydawca:
Politechnika Świętokrzyska w Kielcach. Wydawnictwo PŚw
Tematy:
paliwa alternatywne
oczyszczalnia ścieków
Świętokrzyskie
substitute fuels
waste treatment plants
Opis:
The short characteristic of municipal waste management system in the Świętokrzyskie voivodeship was conducted, basing on the data from the Central Statistic Office and local waste management plans. As a result of the analysis performed on the given data, the modernization and expansion of existing sorting installations were proposed, including the regional waste sorting plants with the alternative fuel production lines for the cement in-dustry in the Świętokrzyskie voivodeship. This paper was presented at seminar for Ph.D. candidates at Kielce University of Technology.
Źródło:
Structure and Environment; 2010, 2. no. 4; 29-40
2081-1500
Pojawia się w:
Structure and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
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