Temat: treatment plant - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Technological reliability of sewage treatment plant with the Pomiltek Mann type bioreactor
Autorzy:: Kurek, Karolina
Bugajski, Piotr
Operacz, Agnieszka
Młyński, Dariusz
Wałęga, Andrzej
Powiązania:: https://bibliotekanauki.pl/articles/292901.pdf
Data publikacji:: 2020
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: pollution indicators
technological reliability
wastewater treatment plant
Weibull method
Opis:: The aim of the work was to determine the technological reliability of the selected pollution indicators removal BOD₅, COD_Cr and total suspension from the sewage treatment plant working with the bioreactor Pomiltek Mann type. Wastewater treatment plant which is a subject of this study is located in Lesser Poland, in Siepraw commune. The analysis was performed using the Weibull method for basic indicators of impurities, BOD₅, COD_Cr and total suspended solids. Physico-chemical analyses of raw and treated wastewater, were carried out in the period from 2003 to 2014 (11 years). The research period included measured values of pollutions indicators in 38 samples of raw and treated sewage. For each of pollution indicators descriptive statistic, percentage reduction (n) and treatment plant reliability factors (RF) were calculated. Average reduction for BOD₅ and TSS was on level equal 94%, only for COD the average reduction was lower and was on level 89%. The reliability values determined by Weibull method, were: 75% (BOD₅), 90% (COD_Cr) and 89.5% (TSS). The reliability results have been lower than the presented by literature source, which means that work of wastewater treatment plant in Siepraw was not satisfied in 11 years of research.
Źródło:: Journal of Water and Land Development; 2020, 46; 146-152
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Analysis of the distribution of statistical concentrations of pollutants in samples of treated wastewater from small sewage treatment plants
Autorzy:: Kaczor, Grzegorz B.
Powiązania:: https://bibliotekanauki.pl/articles/2174301.pdf
Data publikacji:: 2022
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: pollutants
sewer system
significance test
statistical distribution
treatment plant
Opis:: The aim of the research was to show which theoretical statistical distribution best reflects and describes the variability of pollutant concentrations in treated sewage, discharged from small sewage treatment plants, characterised by a value below 2000 PE. The statistical analysis additionally takes into account the influence of the number of measuring sequence data on the shape and level of the distribution fit. The data for the research were obtained from three small sewage treatment plants, operating in the Lesser Poland, 10, 11 and 14 km from Kraków. Due to their size, these facilities are included in the group of treatment plants below 2000 PE. The research was conducted for 10 years. In the statistical analysis, 20-, 40-, 60- and 80-element data series were used, including the values of biochemical oxygen demand (BOD5), chemical oxygen demand (CODCr) and total suspended solids (TSS), determined in samples of treated wastewater. Two commonly used tests, Kolmogorov-Smirnov λ and Pearson’s χ2 test were used to assess the fit of the theoretical statistical distribution to the empirical data distribution. Statistical analysis showed that the studied communities were characterised by an asymmetric, right-oblique distribution. Most often, the empirical distribution of the analysed measurement sequences was consistent with the Fisher-Tippett distribution. On the basis of the χ2 test, this distribution was described by a total of 31 out of 36 analysed groups at the significance level of a = 0.05. Other distributions that often describe the analysed empirical data are: Gamma, log-normal, Chi-square, and Weibull. The common feature of these distributions is usually asymmetry, right oblique. The skewness value ranges from 0.15 to 1.69.
Źródło:: Journal of Water and Land Development; 2022, 55; 115--124
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Sustainable sewage sludge management in Morocco: Constraints and solutions
Autorzy:: Ghacha, Abdessamad
Ben Allal, Laila
Ammari, Mohammed
Powiązania:: https://bibliotekanauki.pl/articles/293242.pdf
Data publikacji:: 2020
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: disposal
recovery
sewage sludge
sustainable management
wastewater
wastewater treatment plant
Opis:: The remarkable development of sanitation in Morocco has inevitably led to the production of sludge generated from wastewater treatment plants in increasing quantities. Consequently, the problem of sludge management becomes persistent and worrying. The aim of this paper was to contribute to the study of sewage sludge management issue in Morocco by identifying the various constraints hampering the sustainable disposal and/or recovery of municipal sewage sludge and drawing up recommendations for the decision-makers. Moreover, in the context of improving by learning from best practices and seeking common solutions regarding this problematic, benchmarking with other countries has been conducted as well. To carry out this study, a methodological approach was defined based on bibliographic research, surveys, interviews and benchmarking. The constraints hampering the sustainable management of sludge are numerous and complex, they have not been technical and environmental but also a regulatory, institutional-organizational and economic-financial nature yet. Therefore, municipalities, government and academia ideally would be encouraged to participate in the decision-making process regarding the management of sewage sludge. Technical solutions, when coupled with stakeholder participation, can lead to policy implementation with a higher chance of improving the present situation. In the case of Morocco, when comparing with others sludge recovery and disposal routes, land application (reuse in agriculture, silviculture and rehabilitation of degraded soils) remains the most environmentally friendly option, as well as a sustainable and economically viable solution.
Źródło:: Journal of Water and Land Development; 2020, 46; 71-83
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Assessment of the stability and reliability of the water treatment plant in Nowy Sącz using control cards
Autorzy:: Śliz, Paulina
Bugajski, Piotr
Powiązania:: https://bibliotekanauki.pl/articles/2073749.pdf
Data publikacji:: 2022
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: control cards
pollution reduction efficiency
stability of wastewater treatment
technological reliability
water treatment plant
Opis:: The subject of the study was to evaluate the stability and reliability of the sewage treatment plant in Nowy Sącz. The scope of the analysed indicators included the main indicators of wastewater contamination: BOD5(biochemical oxygen demand), CODCr (chemical oxygen demand), total suspended solids (TSS), total nitrogen (Ntot), and total phosphorus (Ptot). The operation stability of the sewage treatment plant in Nowy Sącz was determined on the basis of control cards x for 24 observations made in the period 2018-2019 (2 years). Moreover, the technological reliability of the tested sewage treatment plant (WN) was determined based on the values of the analysed pollution indicators in treated sewage and their permissible values. On the basis of the conducted analyses, full stability of the removal process of most of the analysed contaminants was found. In no case was there any crossing of the control lines, only a single grouping of samples above the help line in the case of total nitrogen, which could indicate a periodical disturbance in the stability of the removal process of this compound. On the basis of the obtained values of the reliability coefficient, which were below WN=1.00, reliable operation of the analysed facility was found, with a high degree of reduction (ƞ) of the analysed pollutants. The method of determining the technological reliability and stability of the treatment plant with the use of control cards is an effective and easy tool for detecting any disturbances and instabilities in the processes taking place in the tested facility. It enables the operator to take quick action to remove them, thus ensuring a safe wastewater treatment process for the environment and human health.
Źródło:: Journal of Water and Land Development; 2022, 52; 251--256
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Applying of water quality indices methods for assessment of 9-Nissan Water Treatment Plant
Autorzy:: Abdul-Hameed, Hayder M.
Powiązania:: https://bibliotekanauki.pl/articles/1844403.pdf
Data publikacji:: 2020
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: nitrate
pH
suspended solids
water quality index
water treatment plant
Opis:: In this research different methods for measuring water quality indices were conducted to investigate the performance of the newly designed, constructed and operated 9-Nissan water treatment plant, Iraq. Data gathering and implementation took place throughout winter and summer. Water samples were taken periodically, according to the standard method, the research was carried out by collecting different random samples for eight months (Jun. 2015–Jan. 2016) and measuring (turbidity, total hardness, pH, total dissolved solids, suspended solids, Cl–, Mg2+, Fe2+,NO3–, NH3+) for each sample. Five different approaches and methodologies of calculating the water index were applied. The results revealed that the Water Quality Indices varied from 70.55 to 88.24, when applying Canadian Council of Ministers of the Environment Water Quality Index (CCMEWQI) and British Columbia water quality index (BCWQI) geometric weighted mean respectively. All the results, from the five approaches indicated good water quality, multiple regression analyses were conducted for turbidity, total hardness and suspended solids, they found that these parameters are strongly related to each other and to other parameters.
Źródło:: Journal of Water and Land Development; 2020, 47; 25-29
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Impact of raw and purified wastewater reuse from the Dar El-Gueddari treatment plant on the soil
Autorzy:: Njimat, Smail
Elfettahi, Fouad
Griou, Hajar
El Brouzi, Mohammed Y.
Aboulouafa, Mohammed
Ibn Ahmed, Said
Powiązania:: https://bibliotekanauki.pl/articles/1844311.pdf
Data publikacji:: 2021
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: dilutions
electrical conductivity
infiltration
organic matter
pH
treatment plant
wastewater irrigation
Opis:: The study has been carried out at two experimental sites. It aims to assess the impact of the reuse of raw wastewater, purified and diluted with conventional water on the physicochemical quality of soils compared to irrigated soils with conventional drilled water and non-irrigated soil. The obtained results show that the electrical conductivity EC and sodium gradually increase in all the plots irrigated with wastewater. Additionally, a slight increase in the pH levels at the first site and a slight decrease in the second site was seen, but at both sites the soils remained alkaline. The infiltration rate of water slide decreases in relation to the amount of irrigation, especially in plots irrigated by raw and treated wastewater. For the same plots, the values of organic matter increased, and the values obtained for the exchangeable sodium percentage (ESP) became high in the third year and reached 17.0% and 16.7% respectively.
Źródło:: Journal of Water and Land Development; 2021, 49; 121-128
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: An experimental sedimentation tank for enhancing the settling of solid particles
Autorzy:: Yaseen, Dina A.
Abu-Alhail, Saad
Mohammed, Rusul N.
Powiązania:: https://bibliotekanauki.pl/articles/1844316.pdf
Data publikacji:: 2021
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: baffle
clay
secondary settling basin
solid particles
treatment plant
turbid water
Opis:: Sedimentation tanks have a vital role in the overall efficiency of solid particles removal in treatment units. Therefore, an in-depth study these tanks is necessary to ensure high quality of water and increasing the system efficiency. In this work, an experimental rectangular sedimentation tank has been operated with and without a baffle to investigate the system behaviour and effectiveness for the reduction of solid particles. Turbid water was prepared using clay, which was collected from the water treatment plant of Al Maqal Port (Iraq), mixed with clear water in a plastic supply tank. Raw and outflow samples were tested against turbidity after plotting a calibration curve between inflow suspended solids versus their corresponding turbidity values. The key objective was to assess the impact of different flow rates, particle concentrations, heights and positions of the baffle on the system efficiency. Findings showed that the tank performance was enhanced significantly (p < 0.05) with the use of a baffle placed at a distance of 0.15 of tank length with height equal to 0.2 of tank depth. Higher removal efficiency (91%) was recorded at a lower flow rate (0.015 dm3∙s–1) and higher concentration (1250 mg∙dm–3), as the treatment efficiency enhanced by 34% compared with the operation without a baffle. Placing the baffle in the middle of the sedimentation tank produced the worst results. System efficiency for solids removal reduced with increasing baffle height. Further research is required to evaluate the efficiency of an inclined baffle.
Źródło:: Journal of Water and Land Development; 2021, 49; 63-73
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: The analysis of chemical parameters of groundwater before and after sand filtration in the Velekinca water treatment plant, Kosovo
Autorzy:: Beluli, Valdrin M.
Powiązania:: https://bibliotekanauki.pl/articles/1844369.pdf
Data publikacji:: 2021
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: groundwater treatment plant
ion-sand particle chain
physical-chemical parameters
sand filtration
WHO standard
Opis:: Our scientific research is based on the monitoring of ions before and after filtration of groundwaters in the water plant of Velekinca in the municipality of Gjilan, Kosovo. Sandy filters are the most commonly used industrial filters in surface – and groundwater industries. The reason is their low construction cost and high processing capacity. In our scientific research, sand filters used in the plant do not have perfect filtration, so we can monitor results before filtration (BF) and after filtration (AF) by determining the concentration of some ions and molecules. The following average concentrations have described: Ca2+ (BF: 83.42, AF: 83.19) mg·dm–3, Mg2+ (BF: 35.59, AF: 34.35) mg·dm–3, Cl– (BF: 28.018, AF: 28.73) mg·dm–3, SO42– (BF: 42.76, AF: 44.46) mg·dm–3, HCO3– (BF: 410.9, AF: 404.81) mg·dm–3, A-HCl (BF: 6.73, AF: 6.63) ml-HCl, GH (BF: 19.94, AF: 19.62) °dH, CS (BF: 18.87, AF: 18.5) °dH and NO2– (BF: 0.0033, AF: 0.0022) mg·dm–3. Being scientific researchers in the field of water treatment technology, we have concluded that ions create an affinity for sand particles. They attach to each other by creating an ion-sand particle physical chain. According to our scientific research, sand filters are difficult to guarantee a high quality of water processing.
Źródło:: Journal of Water and Land Development; 2021, 48; 122-129
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Kinetics of oxidation of manganese by potassium permanganate and chloride in the Velekinca water treatment plant, Kosovo
Autorzy:: Beluli, Valdrin M.
Powiązania:: https://bibliotekanauki.pl/articles/1844416.pdf
Data publikacji:: 2020
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: chemical reactions
chlorine Cl2(g)
groundwater
manganese
oxidation
speed reaction
water treatment plant
Opis:: Our scientific research is based on oxidation reactions and monitoring of chemical reaction kinetics in the Velekinca groundwaters plant in Gjilan municipality, Kosovo. The GW of this plant contains high concentration of manganese so we need to use potassium permanganate (KMnO4) as one of the most power oxidants in the water treatment plant. In our research the high concentration of Mn in groundwaters is 0.22–0.28 mg∙dm–3 and this concentration is not in accordance with the WHO. Chlorine is one of the most common disinfectants used in the water treatment industry because it has a low cost and immediate effect on the destruction of microorganisms, the concentration of chlorine (Cl2) in our research is 0.1–0.32 mg∙dm–3. The speed of chemical reactions in the technology of GW is extremely important because sometimes in the elimination of chemical pollutants using oxidizing agents often form intermediate species. The speed of reactions indicates how fast chemical bonds are formed in the creation of a product, and this depends on the rate of reaction (XA). The focus for the research is to study the potassium permanganate and chlorine gas reactions in water if it forms intermediate products (intermediate species) due to the high speed of reactions. Scientific research conclusion, intermediate species in the oxidation reactions of Mn and water disinfection with Cl2(g) it is impossible to cause a high rate of chemical reactions from the reaction rate (XA = 1%) to the reaction rate (XA = 99%). The maximum speed at the highest XA Cl2 is from 4.405∙10–11 to 8.87∙10–10 mol∙dm–3∙s–1, while at Mn is (2.030–4.034)∙10–7 mol∙dm–3∙s–1.
Źródło:: Journal of Water and Land Development; 2020, 47; 30-37
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Assessment of the reliability of the operation of a sewage treatment plant using Monte Carlo simulation
Autorzy:: Migdał, Karolina
Operacz, Agnieszka
Vaskina, Iryna
Śliz, Paulina
Tavares, Jorge
Almeida, Adelaide
Migdał, Michał
Powiązania:: https://bibliotekanauki.pl/articles/2203571.pdf
Data publikacji:: 2022
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: efficiency
mathematical simulation
Monte Carlo simulation
pollution indicators
probability distribution
sewage treatment plant
Opis:: The aim of the study was to model the operation of a wastewater treatment plant using the Monte Carlo method and selected probability distributions of random variables. Pollutant indices in treated wastewater were analysed, such as: biological oxygen demand (BOD 5), chemical oxygen demand (COD Cr), total suspended solids (TSS), total nitrogen (N tot), total phosphorus (P tot). The preliminary analysis of pollution indicators series included the: calculation of descriptive statistics and assessment of biological degradability of wastewater. The consistency of the theoretical distributions with the empirical ones was assessed using Anderson-Darling statistics. The best-fitting statistical distributions were selected using the percent bias criterion. Based on the calculations performed, it was found that the analysed indicators of pollution in treated wastewater were characterised by an average variability of composition for BOD 5, COD Cr and TSS, and a high variability of composition for N tot and P tot. The best fitted distribution was log-normal for BOD 5, TSS, N tot and P tot and general extreme values for COD Cr. The simulation carried out using the Monte-Carlo method confirmed that there may be problems associated with the reduction of nutrients (N tot and P tot) the analysed wastewater treatment plant. Results of values obtained of the risk values of negative control of wastewater treatment plant operation for biogenic compounds, different from 1, indicate that the number of exceedances at the outflow may be higher than the acceptable one.
Źródło:: Journal of Water and Land Development; 2022, Special Issue; 80--90
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Analysis of hydraulic load of a wastewater treatment plant in Jasło
Analiza obciążenia hydraulicznego oczyszczalni ścieków w Jaśle
Autorzy:: Młyński, D.
Chmielowski, K.
Młyńska, A.
Powiązania:: https://bibliotekanauki.pl/articles/292287.pdf
Data publikacji:: 2016
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: hydraulic load
sewage
sewage amount
wastewater treatment plant
ilość ścieków
obciążenie hydrauliczne
oczyszczalnie ścieków
ścieki
Opis:: The paper presents an analysis of hydraulic load in a wastewater treatment plant (WTP) in Jasło. The study was based on the records of daily sewage volume entering the treatment plant within a multi-year period of 2010–2014. The analysis took into account the average daily amount of incoming sewage, the maximum daily peaking factor for the incoming sewage, changes in the sewage volume depending on specific month and day of a week, and class intervals with the greatest frequency of occurrence. The analysis revealed that the average daily volume of the sewage entering the WTP in Jasło in the investigated multi-year period was 13 045 m³·d^–1. The amount of incoming sewage was variable, as evidenced by the maximum peaking factors of daily sewage inflow that ranged from 1.07 to 2.78, depending on a specific month. The sewage admission was the largest in March, May and June and on Saturdays. Sewage volume interval most often occurring at the WTP in Jasło was the one between 8 000 and 10 000 m³·d^–1. The study results indicated that the facility was hydraulically underloaded.
W artykule przedstawiono analizę obciążenia hydraulicznego oczyszczalni ścieków w Jaśle. Badania przeprowadzono na podstawie rejestrów dobowych objętości ścieków dopływających do oczyszczalni w wieloleciu 2010–2014. Wyznaczono średnią dobową ilość dopływających ścieków w badanym pięcioleciu, określono maksymalne współczynniki nierównomierności dobowej dopływu ścieków, kształtowanie się wielkości dopływu w poszczególnych miesiącach oraz dni tygodnia analizowanego wielolecia i wyznaczono przedziały klasowe, w których najczęściej pojawiały się dopływy ścieków. Na podstawie przeprowadzonej analizy stwierdzono, że średnia dobowa ilość ścieków dopływających do oczyszczalni w Jaśle w rozpatrywanym wieloleciu wynosi 13 045 m³·d^–1. Ilość dopływających ścieków charakteryzuje się nierównomiernością, o czym świadczą wielkości maksymalnych współczynników nierównomierności dobowej dopływu ścieków, które w poszczególnych miesiącach przyjmowały wartości z przedziału od 1,07 do 2,78. Ponadto stwierdzono, że największe dopływy ścieków występują w miesiącach: marzec, maj, czerwiec, a w ciągu tygodnia – w soboty. Analiza częstości wystąpienia poszczególnych ilości ścieków dopływających do jasielskiej oczyszczalni wykazała, że najczęściej pojawiającym się dopływem był dopływ przyjmujący wartości z przedziału od 8 000 do 10 000 m³·d^–1. Bazując na uzyskanych wynikach, stwierdzono, że oczyszczalnia ścieków w Jaśle pracuje w warunkach niedociążenia hydraulicznego.
Źródło:: Journal of Water and Land Development; 2016, 28; 61-67
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Influence of extraneous waters on the quality and loads of pollutants in wastewater discharged into the treatment plant
Wpływ wód przypadkowych na zmienność stężeń i ładunków zanieczyszczeń w ściekach dopływających do oczyszczalni
Autorzy:: Kaczor, G. B.
Chmielowski, K.
Bugajski, P.
Powiązania:: https://bibliotekanauki.pl/articles/292491.pdf
Data publikacji:: 2017
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: extraneous waters
i/i
sewage
sewage system
wastewater treatment plant
kanalizacja
oczyszczalnia ścieków
ścieki
wody przypadkowe
Opis:: The aim of the study was to analyze an influence of an inflow penetrating into two selected small sewerage systems during a rainy weather on pollutant concentration and load in raw sewage. Studies were conducted in 2010–2015 on two small sewerage systems in Małopolska province. The studies confirmed that the inflow penetrating into the sewerage systems resulted in a decrease of pollutant concentrations in sewage. However, they also showed that this dilution was not constant for all types of pollutants. The most important outcome of the study was demonstrating that despite its diluting effect on pollutants, the intense inflow into a sewerage system resulted in an increase of a sewage pollutant load. This increase was not regular, but it was rising dramatically when the inflow share in sewage exceeded 50%. The study indicated that the inflow penetrating into the sewerage system should not be disregarded, as it actually presented a significant threat to the wastewater treatment process and in consequence to the quality of recipient waters.
Celem badań było przeanalizowanie wpływu wód przypadkowych, dopływających do dwóch wybranych małych systemów kanalizacyjnych podczas pogody deszczowej, na stężenie i ładunki zanieczyszczeń w ściekach surowych. Badania prowadzono w latach 2010–2015 w dwóch małych systemach kanalizacyjnych funkcjonujących w województwie małopolskim. Przeprowadzone badania potwierdziły, że dopływy wód przypadkowych do kanalizacji powodują zmniejszenie stężenia zanieczyszczeń zawartych w ściekach. Jednakże rozcieńczenie to nie jest stałe w odniesieniu do wszystkich rodzajów zanieczyszczeń. Najważniejszym rezultatem badań było wykazanie, że – mimo rozcieńczenia ścieków – intensywny dopływ wód przypadkowych do kanalizacji sanitarnej powodował zwiększenie ładunków zanieczyszczeń w dopływie do oczyszczalni. Zwiększenie to nie było regularne, lecz gwałtownie przyrastające, gdy udział wód przypadkowych w ściekach przekraczał 50%. Wyniki badań wskazują, że dopływów wód przypadkowych do kanalizacji nie należy lekceważyć, gdyż stanowią one w rzeczywistości istotne zagrożenie dla procesu oczyszczania ścieków, a w dalszej kolejności – jakości wód w odbiorniku.
Źródło:: Journal of Water and Land Development; 2017, 33; 73-78
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Wastewater reuse and mapping of irrigable soils: Case of Sidi Bel Abbes City, Algeria
Autorzy:: Mahfoud, Zakaria
Khaldi, Abdelkader
Korichi, Khaled
Powiązania:: https://bibliotekanauki.pl/articles/293066.pdf
Data publikacji:: 2020
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: bacteriology
physico-chemical parameters
reuse
soil
Sidi Bel Abbes City
wastewater
wastewater treatment plant (WWTP)
Opis:: This work aims to evaluate the treated wastewater from the activated sludge treatment plant in the City of Sidi Bel Abbes (North-Western Algeria) which is required for reuse in irrigation. The control of irrigated areas downstream is done based on a pedological study. Physico-chemical analysis such as (pH, BOD₅, COD and SS) indicate results in Algerian and international standards required by the WHO. The Sodium Adsorption Ratio and Electrical Conductivity values of the treated wastewater belong to the C3-S1 class. The treated wastewater has a fairly good microbiological quality that meets Algerian standards. The helminth eggs are practically absent. The concentrations of heavy metals are much lower than the limits prescribed in the Algerian decrees. Therefore, the overall processing plant efficiency is satisfactory and has the characteristics of a good treated water quality for reuse in the field of irrigation while protecting the environment. The pedological study of the soil samples shows that the most dominant fraction is undeveloped calcimagnetic. The planned irrigation plain covers an area of about two thousand hectares. Depending on the crops to irrigate; the development and nature of the necessary or recommended improvements, the proposed irrigation perimeter could be classified into five categories in which only three categories are irrigable. Water projects have been proposed to ensure the irrigation of three subdivided sectors.
Źródło:: Journal of Water and Land Development; 2020, 46; 153-161
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Evaluation of water treatment plants quality in Basrah Province, by factor and cluster analysis
Autorzy:: Al Saad, Zainb A.A.
Hamdan, Ahmed N.A.
Powiązania:: https://bibliotekanauki.pl/articles/293213.pdf
Data publikacji:: 2020
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: cluster analysis (CA)
factor analysis (FA)
multivariate statistics
the Shatt Al Arab River
water quality
water treatment plant
Opis:: The Shatt Al Arab River (SAAR) is a major source of raw water for most water treatment plants (WTP’s) located along with it in Basrah province. This study aims to determine the effects of different variables on water quality of the SAAR, using multivariate statistical analysis. Seventeen variables were measured in nine WTP’s during 2017, these sites are Al Hussain (1), Awaissan (2), Al Abass (3), Al Garma (4), Mhaigran (5), Al Asmaee (6), Al Jubaila (7), Al Baradia (8), Al Lebani (9). The dataset is treated using principal component analysis (PCA) / factor analysis (FA), cluster analysis (CA) to the most important factors affecting water quality, sources of contamination and the suitability of water for drinking and irrigation. Three factors are responsible for the data structure representing 88.86% of the total variance in the dataset. CA shows three different groups of similarity between the sampling stations, in which station 5 (Mhaigran) is more contaminated than others, while station 3 (Al Abass) and 6 (Al Asmaee) are less contaminated. Electrical conductivity (EC) and sodium adsorption ratio (SAR) are plotted on Richard diagram. It is shown that the samples of water of Mhaigran are located in the class of C4-S3 of very high salinity and sodium, water samples of Al Abass station, are located in the class of C3-S1 of high salinity and low sodium, and others are located in the class of C4-S2 of high salinity and medium sodium. Generally, the results of most water quality parameters reveal that SAAR is not within the permissible levels of drinking and irrigation.
Źródło:: Journal of Water and Land Development; 2020, 46; 10-19
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Efficiency of wastewater purification in medium sand with a lightweight expanded clay aggregate assisting layer
Autorzy:: Kalenik, Marek
Wichowski, Piotr
Chalecki, Marek
Kiczko, Adam
Powiązania:: https://bibliotekanauki.pl/articles/27312642.pdf
Data publikacji:: 2023
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: domestic wastewater infiltration drainage
domestic wastewater purification
individual wastewater treatment plant
individual WWTP
lightweight expanded clay aggregate
LECA
soil bed
Opis:: The objective of this experimental study was to examine whether an assisting layer of lightweight expanded clay aggregate (LECA) of the granulation 1-4 mm, introduced into a subsoil, is able to improve an efficiency of removal of total nitrogen and total phosphorus from domestic wastewater. In the investigations, an assisting 0.10 and 0.20 m thick LECA layer was applied. It has been observed that the effectiveness of removal of total suspended solids (TSS), total nitrogen and total phosphorus from wastewater as well as the level of biochemical oxygen demand (BOD5 ) and chemical oxygen demand (COD) is in accordance with the Polish standards on wastewater disposal into grounds and surface water. The performed experiments showed that the effectiveness of raw wastewater purification for the medium sand soil bed with the 0.20 m thick assisting LECA layer is higher than for the 0.10 m thick assisting layer. In the medium sand soil bed with the 0.20 m thick assisting LECA layer, the removal efficiency regarding total nitrogen increased by 20.6%, total phosphorus by 5.2%, ammonium nitrogen by 8.8% and TSS by 5.3%, and reduction efficiency regarding BOD5 increased by 1.7% and COD by 2.3% with relation to the 0.10 m thick assisting LECA layer (all percentages - in average). The results of the experiment showed that the LECA with the granulation 1-4 mm can be used to assist in removal of total nitrogen and total phosphorus from wastewater with application of infiltration drainage.
Źródło:: Journal of Water and Land Development; 2023, 57; 30--38
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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