Wyniki wyszukiwania - BazTech

1

The Impact of Electric Current for Sewage Sludge Characteristics from Anaerobic Sequencing Bio-Electrochemical Treatment of Sewage Generated During Soilless Tomato Cultivation

Bryszewski Kamil Łukasz, Rodziewicz Joanna, Mielcarek Artur, Janczukowicz Wojciech, Kłobukowska Karolina, Nowosad Joanna

Journal of Ecological Engineering

|

2023

|

Vol. 24, nr 11

294--302

EN

The aim of the present study was to determine: the impact of electric current density on the quantity and quality of sewage sludge produced in anaerobic sequencing bio-electrochemical reactor (AnSBBER) with an iron electrode during the treatment of drainage from soilless cultivation of tomatoes. Direct electric current (DC) effect was determined at its following densities (J): 0.63 A/m2 (R1), 1.25 A/m2 (R2), 2.5 A/m2 (R3), and 5 A/m2 (R4). Sodium acetate in (C:N) ratio of 1.0 was supplied to the reactors to ensure the proper biofilm development. Contents of elements (K, P, S, Na, Al, Cu, Fe, Mn, Mo, Zn, Mg, C, N and Ca) in the biofilm were determined. Additionally, the content of total suspended solids and the percentage share of volatile suspensions (VSS) in the sludge were determined. The study showed that the organic matter content in the sludge corresponded to the values typical of the stabilized sludge (up to 28.8% d.m. in R2).The increase in electric current density caused an increase in the concentration of phosphorus in the formed sludge (from 6.34 to 8.00% d.m. in 0.63 and 5.00 A/m2, respectively). The analyzed sludge, compared to municipal sludge from wastewater treatment plants with biological reactors and activated sludge chambers, is richer in such elements as phosphorus, nitrogen, calcium, magnesium, potassium, sodium, and iron.

2

Investigation of the Efficiency of the Ozonator in the Process of Water Purification Based on the Corona Discharge

Abdykadyrov Askar, Marxuly Sunggat, Mamadiyarov Maxat, Smailov Nunzhigit, Zhunusov Kanat, Kuttybaeva Ainur, Amanzholov Arnay, Orazbekov Asset

Journal of Ecological Engineering

|

2023

|

Vol. 24, nr 2

140--151

EN

In this research paper, the problem of studying the effectiveness of ozone in the process of water treatment was considered. In the course of the scientific work, a review of domestic and foreign literature was conducted; its advantages and disadvantages were considered. The research paper presented the theoretical and practical methods of water purification with ozone. The main factors influencing the efficiency of the technology in the process of water purification were also considered. It was established that as a technological method of water purification, the efficiency of the ozonation process includes not only the cost of electricity, but also the efficiency of its mixing, ozone dissolution in treated water. In addition, special attention is paid to the final stage of mixing the ozone-air mixture with treated water. From the results obtained, it can be seen that after primary ozonation, the concentrations of chromium, oxidation of permanganate, iron, petroleum products, metal ions and other pollutants significantly decreased. During further water purification, organic and inorganic pollutants are removed in the future (completely or up to the requirements of the standard). However, calcium, magnesium, sulfates, chlorides, pH value, alkalinity and hardness practically do not change. The water quality after primary ozonation according to bacteriological indicators met the requirements of the standard.

3

Wielopoziomowa walka z zanieczyszczeniem wód - nowa odsłona dyrektywy ściekowej

Dawidowicz Magdalena, Kowalczyk Jakub, Pietrzak Dominik

Gospodarka Wodna

|

2023

|

Nr 3

24--27

PL

Za zanieczyszczenie wód substancjami biogennymi - azotem i fosforem - w dużej mierze odpowiadają rolnictwo i gospodarka ściekowa. By ograniczyć wpływ tych sektorów na stan wód, regularnie prowadzone są przeglądy i aktualizacje programów i polityk w tym zakresie, zarówno na poziomie Unii Europejskiej, jak i krajowym, oraz realizowany jest szereg działań i inwestycji. Z uwagi na dynamiczny rozwój przemysłu i produkcji w ostatnich dekadach problemem dla wód stały się nowe rodzaje zanieczyszczeń. Do walki z ich ograniczeniem służyć ma szeroki wachlarz nowych rozwiązań proponowanych w projekcie znowelizowanej dyrektywy ściekowej.

EN

Agriculture and wastewater management are among the main sources of pollution of waters with biogenic substances such as nitrogen and phosphorus. In order to reduce the impact of these sectors on the status of waters, regular revisions and updates of related programmes and policies are carried out, both on EU and national levels, followed by a series of actions and investments. Due to the dynamic development of industry and production over recent decades, waters now face new types of pollutions. The draft revision of the wastewater directive - the so-called transformation - includes a wide range of new solutions to reduce them.

4

Ocena efektywności Komunalnej Oczyszczalni Ścieków w Ciechanowie

Świtkowska Małgorzata, Dalecka Weronika

Gaz, Woda i Technika Sanitarna

|

2023

|

Nr 7-8

38--43

PL

W artykule przedstawiono charakterystykę jednej z Komunalnej Oczyszczalni Ścieków w województwie mazowieckim - Komunalną Oczyszczalnię Ścieków w Ciechanowie. W ramach części badawczej wykonano pomiary jakościowe ścieków surowych i oczyszczonych na zawartość biogenów między innymi: fosforu ogólnego, azotu ogólnego oraz materii organicznych wyrażonych wskaźnikami: ChZTCr, oraz BZT5. Przeanalizowano ocenę jej efektywności, w której uwzględniono zależność między Równoważną Liczbą Mieszkańców (RLM), a ilością wytworzonych komunalnych osadów ściekowych.

EN

The article presents the characterization of one of the Communal Sewage Treatment Plants in the Masovian Voivodeship - the Communal Sewage Treatment Plant in Ciechanów. As part of the research section, qualitative measurements of raw and treated sewage were conducted to assess the content of biogens, including total phosphorus, total nitrogen, and organic matter ex-pressed by indicators such as CODCr and BOD5. The evaluation of its effectiveness was analyzed, taking into account the relationship between the Equivalent Number of Inhabitants (ENI) and the quantity of generated municipal sewage sludge.

5

Redukcja kosztów oczyszczania ścieków

Bohosiewicz Grzegorz

Forum Eksploatatora

|

2023

|

Nr 2 (123)

58-61

PL

Gwałtowny wzrost cen energii elektrycznej w dużej mierze przełożył się na budżety zakładów komunalnych. Wiele oczyszczalni ścieków szuka możliwości zredukowania lub optymalizacji zużycia prądu niezbędnego do procesów, jednocześnie zabezpieczając się przed potencjalnymi karami, związanymi z przekroczeniami parametrów ścieków oczyszczonych.

6

Study on the treatment of fluorine-containing wastewater by precipitation-adsorption process

Li Xiaochang, Lyu Xianjun

Environment Protection Engineering

|

2023

|

Vol. 49, nr 2

55--73

EN

Fluorine-containing wastewater from the Yuncheng Sewage Treatment Plant in Heze City, Shan-dong Province was treated by coagulation and precipitation with poly aluminum sulfate, and CaO chemical precipitation-activated carbon adsorption, with a view to reducing fluoride ions concentration in the wastewater to below the discharge standard. The results showed that the optimum conditions for the coagulation-sedimentation test of poly aluminum sulfate were as follows: the dosage of poly aluminum sulfate 0.3 g/dm3, initial pH value 4.0, the removal rate of fluoride ion in the fluorine-containing wastewater reached 98.46%, and the concentration of fluoride ion was 0.462 mg/ dm3, which reached the discharge standard (1.5 mg/ dm3); The optimum conditions for the CaO chemical precipitation, and lanthanum loaded activated carbon adsorption method were as follows: the amount of CaO 20 g/ dm3, initial pH of the chemical precipitation test 8.0, the dosage of lanthanum loaded activated carbon 10 g/ dm3, and the initial pH of the adsorption test 6.0. At this time, the removal rate of fluoride ions in the fluorine-containing wastewater reached 95.81%, and the concentration of fluoride ions was 1.26 mg/ dm3, which also met the discharge standard.

7

Przyszłość pól irygacyjnych Wrocławia

Gierko Aleksandra

Zieleń Miejska

|

2022

|

Nr 3

36--38

PL

Kiedy w 1881 r. uruchomiono pola irygacyjne we Wrocławiu, zapewne nie spodziewano się korzyści dla środowiska przyrodniczego, jakich w przyszłości będzie dostarczał ten zalewany ściekami teren.

8

Analysis of the cost of leaks from the water supply system, including methods to reduce water consumption

Knapik Maciej

Zeszyty Naukowe SGSP / Szkoła Główna Służby Pożarniczej

|

2022

|

Nr 84

73--92

EN

The article presents an economic analysis of water leaks from the water suply system on the example of a single-family house, taking into account methods aimed at preventing uncontrolled water losses, including also water consumption reducing methods. The analysis was conducted for selected variants in the economic aspect. The research included measurements of water consumption on the main water meter and specially prepared containers for measuring water leaks. Simple leaks that are not easily visible can generate over 1700 PLN additional costs per year for the household budget. The results of the analyses carried out make it possible to assess which variant of the analysis is the most favourable in economic terms, making it possible to reduce water consumption by up to 60% of the standard consumption. The payback time for the analyzed variants varies from 5 to about 310 days.

PL

W artykule przedstawiono analizę ekonomiczną wycieków wody z sieci wodociągowej na przykładzie domu jednorodzinnego, z uwzględnieniem metod mających na celu zapobieganie niekontrolowanym stratom wody, w tym również metod ograniczających zużycie wody. Analizę przeprowadzono dla wybranych wariantów w aspekcie ekonomicznym. Badania obejmowały pomiary zużycia wody na wodomierzu głównym oraz specjalnie przygotowane pojemniki do pomiaru wycieków wody. Proste wycieki, które nie są łatwo widoczne, mogą narazić budżet domowy na dodatkowe koszty w wysokości ponad 1700 zł rocznie. Wyniki przeprowadzonych analiz pozwalają ocenić, który wariant jest najkorzystniejszy pod względem ekonomicznym, umożliwiając zmniejszenie zużycia wody nawet o 60% zużycia standardowego. Czas zwrotu nakładów dla analizowanych wariantów waha się od 5 do około 310 dni.

9

Modelling process of municipal wastewater quality - backgrounds and preliminary application

Bogalecka Magdalena, Dereszewska Alina

Safety and Reliability of Systems and Processes

|

2022

|

Summer Safety and Reliability Seminar 2022

17--34

EN

The probabilistic model of municipal wastewater quality process is proposed in the chapter. The methods of its characteristics and parameters statistical identification and prediction are presented. Next the proposed model is practically applied to examine and characterized the quality of the municipal wastewater collected in the exemplary sewage treatment plant.

10

Wymagania dotyczące zawartości metali w ściekach i osadach ściekowych w świetle obowiązujących regulacji prawnych w zakresie polityki wodnej oraz gospodarki odpadami

Kolasa Dorota, Lach Jakub, Wróbel Kamil, Soszko Michał

Przemysł Chemiczny

|

2022

|

T. 101, nr 1

8--11

11

INNUPS. Technologia usuwania i odzysku metali oraz boru ze ścieków z instalacji mokrego odsiarczania spalin

Nowa Energia

|

2022

|

nr 3

12--15

PL

PGE Energia Ciepła zmodernizowała w Elektrociepłowni Gdyńskiej układ odsiarczania ścieków z mokrego odsiarczania spalin, rozbudowując go o innowacyjne rozwiązanie, jakim jest instalacja wykonana w technologii INNUPS. Wdrożenie to jest odpowiedzią na potrzebę poszukiwania nowych, niezawodnych i dużo sprawniejszych metod oczyszczania ścieków pochodzących z mokrego odsiarczania spalin.

12

The Use of Hydrophytes for Additional Treatmnet of Municipal Sewage

Pichura Vitalii, Potravka Larisa, Ushkarenko Viktor, Chaban Viktor, Mynkin Mykola

Journal of Ecological Engineering

|

2022

|

Vol. 23, nr 5

54--63

EN

At the current stage of discharge and treatment of municipal sewage and other types of wastewater in the territory of Ukraine, traditional technologies of biological treatment in aero-tanks by the process of aerobic oxidation involving active silt characterized by low efficiency are largely used. It was established that biological treatment and additional treatment of sewage involving hydrophytes are efficient. The research on wastewater quality and the efficiency of sewage treatment was conducted in three phases: Phase 1 – “the quality before treatment”, Phase 2 – “the quality after mechanical-biological treatment” at the existing municipal treatment plants, Phase 3 – “the quality after additional treatment by hydrophytes”. In order to determine the efficiency of using hydrophytes additional treatment, Eichhornia crassipes (water hyacinth) and the perennial aquatic plant Lemna minor were planted in one treatment pond. The results of the experiment made it possible to determine high efficiency of using hydrophytes for additional sewage treatment. In particular, the efficiency of additional treatment in the treatment ponds removing the residue of suspended pollutants for 40 days was 32%, toxic salts – 13.0–23.0%, oil products – 30.0%, biogenic substances – 68.5–83.3%. It caused a drop in the values of chemical and biological oxygen demand for 5 days by 89.6% and 61.2%, respectively. The efficiency of sewage treatment removing toxic salts and oil products reached 97.7%, whereas in the case of mineral and organic pollutants – up to 99%. That contributed to a considerable increase in the wastewater quality by the criteria for fisheries. In particular, high nutritional value of Eichhornia crassipes and Lemna minor allowed obtaining 12.5 tons of hydrophyte wet mass that can be used as green manure, feeds for farm animals, poultry and fish.

13

Analysis of the Hydraulic Load of a Local WWTP in the South-Eastern Poland Including Hydraulic Capacity of the Sewage Receiver

Młyńska Anna, Młyński Dariusz, Chmielowski Krzysztof

Journal of Ecological Engineering

|

2022

|

Vol. 23, nr 11

261--272

EN

The paper constitutes the analysis of hydraulic load of a local wastewater treatment plant in the south-eastern Poland along with the analysis of sewage receiver hydraulic capacity and related receiving waters protection. Assuming that the daily outflow of treated sewage should not exceed 10% of the mean-low flow (SNQ) of the receiver, no case of daily sewage outflow greater than 10%·SNQ = 51 840 m3·d-1 was recorded. Moreover, average daily hydraulic load of the treatment plant was lower than the limit value by over 70% and the maximum recorded value – by over 40%. Furthermore, the conducted analysis shows that the particular months differed from each other in the values of the daily hydraulic load of the wastewater treatment plant at the outflow; May was the month with the highest average daily sewage outflow, while September was characterized by the lowest average daily outflow of treated sewage. There was also no clear dependence between the hydraulic load of the WWTP and the day of the week. Daily sewage outflows ranging from 10 000 m3·d-1 to 12 000 m3·d-1 constituted the largest part of all observations. The daily sewage outflows directed to the receiver prove that there is no threat to the preservation of the water environment quality.

14

Ecological, Economic and Practical Aspects of Water Treatment in the Galvanic Industry

Pohrebennyk Volodymyr, Koszelnik Piotr, Nester Anatoly, Libus Tetiana, Kalda Galyna, Kida Małgorzata, Pękala Agnieszka

Ecological Engineering & Environmental Technology

|

2022

|

Vol. 23, iss. 1

212--222

EN

The galvanic industry and the production of printed circuit boards are a significant source of environmental pollution, they pose a threat comparable to the chemical industry. They pollute both the atmosphere, the biosphere and the hydrosphere. The paper presents an assessment of the negative impact on the environment, galvanic production and the resulting post-production waste. It was proposed to use the technology of regeneration of used treating solutions, in which the recovered metal can be reused as a secondary raw material for the production of copper products. The regenerated solution, on the other hand, can be used to treat integrated circuit boards. As part of the work, with the use of a microscope, the structural characteristics of the metal surface obtained as a result of the applied regeneration process were carried out. The indicator of the total exposure to substances present in the deposit formed during production was determined, both before (0.045) and after the introduction of the new technology (100). The economic analysis of the planned project based on the new technology showed that the implementation of the presented method of wastewater treatment allows for obtaining significant benefits, both financial and environmental. The analyses performed can be a valuable source of information on how to reduce the impact environment during the production of integrated circuit boards, as well as on the possibilities of obtaining less expensive materials in the form of secondary raw materials.

15

Water Quality Assessment of Anchar Lake, Srinagar, India

Ashraf Samiyah, Kaur Simarjot, Singla Sandeep

Civil and Environmental Engineering Reports

|

2022

|

Vol. 32, no. 1

88--115

EN

The aim of this study was to ascertain the current condition of the Anchar lake water body in the Indian state of J&K in terms of water quality using some main parameters such as pH, TDS, EC, DO, and nitrates content. For the years 2019 and 2020, samples were obtained for two seasons: summer and winter. The quantitative analysis of the experimental results indicates a general increasing trend and considerable variance in nitrates content, as well as a gradual decrease in pH, indicating that the lake's acidity is increasing, but only within the basicity range, with real values approaching neutrality: TDS and EC content suggest a very favorable situation, but when the overall parameters are tested, they show a defect. Since the sampling sites were well aerated, the dissolved oxygen content showed a growing pattern, and as a result, this metric proved to be useless in deciding the overall scenario in the lake. In the winter, the longitudinal trend line indicates a 10% decrease in pH, while in the summer, it shows a 4.4 percent decrease in pH. In winters, the longitudinal trend line reveals a 6.7 percent growth in nitrate content, while summers see a marginal decline. In the winter, the longitudinal trend line shows a 7% rise in dissolved oxygen, while in the summer, it shows a uniform trend.

16

The efficiency of municipal sewage treatment plants inspiration for water recovery

Wójcicka Karolina

Technical Transactions

|

2021

|

Vol. 118, iss. 1

art. no. e2021023

EN

This article presents a detailed analysis of the functioning of municipal sewage treatment plants. The presented findings are based on questionnaires from over seventy wastewater treatment facilities, covering from several hundred to several hundred thousand inhabitants. The required quality of treated sewage and the necessary efficiency level of the treatment plant were determined in the context of the content of the applicable regulations, and were then compared with the actual data obtained from sewage treatment plants. The findings provided the basis for formulating an evaluation of the efficiency of municipal sewage treatment plants and for further analyses of the possibility of the recovery of water from sewage and its reuse.

17

Influence of Decreasing Supplementation to Transformation of Chemical Forms of Ni, Zn and Cu During Composting of Sewage Sludge

Sidełko Robert, Janowska Beata, Leśniańska Aleksandra, Kraszewska Katarzyna, Grabowska Karina

Rocznik Ochrona Środowiska

|

2021

|

Tom 23

580--593

EN

This paper pertains to the influence of decreasing supplementation to transformation of chemical forms of Ni. Zn and Cu during composting of sewage sludge. A universally used supplementing material constituting a rich source of organic carbon is straw. Addition of straw to sewage sludge is aimed at increasing C/N proportion up to at least 15 due to the risk of formation of toxic forms of nitrogen, concentration of which in sewage sludge is exceptionally high. We have presented in this paper the results of speciation research of three elements applying Tessier’s sequential extraction. It’s been proven that decreasing of straw share in the composted mixture with sewage sludge down to the level of C/N value below the admissible value, has a beneficial effect on the allocation of tested heavy metals towards the forms that are permanently bound in compost matrix. A systematic increase of organic (IV) and residual (V) fractions share and decrease of mobile forms of heavy metals content in bioavailable fractions i.e. ion-exchange (I) and carbonate (II) has been ascertained.

18

Vegetable oil plant wastewater treatment by bacterial isolates : a study in the city of Hila, Iraq

Salim Hanan Kareem, Al-Ahmed Suad Ghali Kadhim

Journal of Water and Land Development

|

2021

|

no. 51

163--167

EN

The present study was to reflect the use of some bacteria in the treatment and removal of pollutants in three selected wastewater sites, including a vegetable oil plant (viz. Al-Etihad Food Industries), the main wastewater treatment station in the city of Hila, and Al-Hila River water from October 2019 to January 2020. The bacterial isolates identified in these three sites were Klebsiella pneumoniae, Escherichia coli, Enterobacteria cloacae, Pseudomonas aeruginosa, Thalasobacillus devorans, Acinetobacter baumannii, and Bacillus subtilis. The molecular study of the bacterial isolates involved the detection of bacterial genera using the polymerase chain reaction (PCR). The results showed that water had a variable nature, depending on the substances in it. It recorded varying chemical and physical property values, ranging between 6.36 and 7.82 for pH and from 2500 to 7100 mg∙dm-3 for total alkalinity. Additional values were 713–2051 μS∙cm-1 for electrical conductivity (EC), 5.90–9.80 mg∙dm-3 for chemical oxygen demand (COD), and 480–960 mg∙dm-3 for total hardness. The given values were also 0.20–0.65 μg∙dm-3, 0.03-0.23 μg∙dm-3, and 0–107 mg∙dm-3 for nitrite (NO2), phosphate (PO4) oils, respectively.

19

Assessment of the Influence of Evaporation and Evapotranspiration on the Volume of Sludge Accumulation in the Sludge Drying Beds

Velychko Svitlana, Dupliak Olena

Journal of Ecological Engineering

|

2021

|

Vol. 22, nr 2

63--69

EN

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.

20

Techniczne i ekonomiczne aspekty zastosowania innowacyjnej metody ozonowania do usuwania wybranych farmaceutyków ze ścieków - badania w skali ułamkowo-technologicznej w oczyszczalni ścieków Jaworzno Dąb

Pawełek Jan, Bergel Tomasz, Siedlecka Ewa, Biń Andrzej K., Szatkowska Beata, Muszański Robert, Kosiniak Michał

Instal

|

2021

|

nr 7/8

33--38

PL

W pracy poddano analizie skuteczność technologiczną usuwania ze ścieków wybranych farmaceutyków (diklofenaku, karbamazepiny, sulfametaksazolu), przy wykorzystaniu innowacyjnej technologii stosowania ozonu. Badania prowadzono w okresie 9 miesięcy w pilotowej stacji badawczej o wydajności od 2 do 5 m3∙h-1 na terenie oczyszczalni Dąb w Jaworznie. Stwierdzono, że średnia redukcja stężenia farmaceutyków kształtowała się dla poszczególnych dawek ozonu: 6,0; 6,4 i 7,2 gO3∙m-3 odpowiednio dla diklofenaku od 89,3; 94,9; 96,4%, dla karbamazepiny 88,7; 92,5; 96,3% i dla sulfametaksazolu 68,2; 81,2; 92,6%. W pracy poddano także analizie redukcję podstawowych wskaźników zanieczyszczeń BZT5 i ChZT. W celu odpowiedzi na pytanie czy istnieje ekonomiczne uzasadnienie stosowania w praktyce proponowanego układu technologicznego, przeprowadzono analizę zużycia energii elektrycznej, której udział stanowi największy składnik kosztów usuwania farmaceutyków. Przeprowadzono ją w odniesieniu do objętości 1 m3 oczyszczanych ścieków. Pobór energii wyniósł średnio 0,96 kWh·m-3.

EN

This paper focused on the technological efficiency of removal the pharmaceuticals, inluding diclofenac, carbamazepine and sulphametoxazole from the sewages with the use of innovative ozone technology. The research was conducted for 9 months at a pilot research station (a capacity of 2 to 5 m3/hr) on the site of Dąb sewage treatment plant in Jaworzno. It was found that the average reduction of the pharmaceuticals at individual ozone doses (6.0; 6.4 and 7.2 g O3·m-3) was as follows: for diclofenac - 89,3; 94,9; 96,4%; for carbamazepine - 88.7; 92.5; 96.3% and for sulfamethaxazole - 68.2; 81.2; 92.6%. Moreover, in this paper also the reduction of the basic pollution indicators: BOD and COD was analyzed. In order to answer the question of whether there is a practical justification in the use of the proposed technologial layout for this process, there was carried the analysis of energy consumption that is the largest cost factor at removal of pharmaceuticals. It was analyzed for the volume of 1 m3 of treated sewages. The average energy consumption was 0.96 kWh·m-3.