Temat: effluent - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Determination of the Composition of Wastewater from Individual Processes of Leather Tanning Production in a Small Plant
Autorzy:: Ignatowicz, Katarzyna
Dziadel, Maciej
Tematy:: industrial effluent
chrome
tannery; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/59114171.pdf Link otwiera się w nowym oknie
Opis:: The article introduces one of the leather industries, the tanning industry, which is responsible for some of the most critical processes that leather undergoes before it is used in subsequent parts of the industry. Since the processes carried out require significant amounts of water, they generate equally large amounts of wastewater, which, as industrial wastewater, requires appropriate treatment. Additionally, due to the quantities and complexity of the processes carried out, the chemicals used become demanding in terms of how they are treated and managed. The parameters of wastewater subjected to a collection in a typical tank are changed. In contrast, wastewater from chromium tanning processes, which should be discharged into a separate tank, is a source of chromium pollution with its high content, thus posing a significant danger to the environment. The study made it possible to assess the biodegradability of wastewater generated during production and the concentration of chromium compounds and other pollutants. Based on the results, it was found that the wastewater generated during the production process is biodegradable (except for mixed wastewater), and the concentration of chromium is 2.81–3.11 g/dm3.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Treatment of petroleum refinery effluent using ultrasonic irradiation
Autorzy:: Findik, S.
Tematy:: degradation
ultrasound
petroleum refinery effluent; Pokaż więcej
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Powiązania:: https://bibliotekanauki.pl/articles/778655.pdf Link otwiera się w nowym oknie
Opis:: Ultrasonic irradiation is one of the advanced oxidation methods used in wastewater treatment. In this study, ultrasonic treatment of petroleum refinery effluent was examined. An ultrasonic homogenizator with a 20 kHz frequency and an ultrasonic bath with a 42 kHz frequency were used as a source for ultrasound. The effects of parameters such as ZnO amount, ozone saturation time, and type of ultrasound source on the degradation of petroleum refinery effluent were investigated. The degradation of petroleum refinery effluent was measured as a change in initial chemical oxygen demand (COD) and with time. According to the results, degradation increased with the addition of ZnO in an ultrasonic probe. There was also a positive effect of ozone saturation before sonication then applying ultrasound on the degradation for an ultrasonic probe. It was observed that there was no positive effect of ZnO addition and ozone saturation on degradation for an ultrasonic bath.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: A Brief Overview of Antibiotic Contamination Sources in Wastewater and Elimination Approaches
Autorzy:: Mumtaj, Zeba Ali
Khan, Abdul Rahman
Ansari, Jamal Akhtar
Asiri, Abdullah
Khan, Saimah
Tematy:: antibiotics
bioremediation
wastewater
sustainable
effluent; Pokaż więcej
Wydawca:: Politechnika Koszalińska. Wydawnictwo Uczelniane
Powiązania:: https://bibliotekanauki.pl/articles/58907729.pdf Link otwiera się w nowym oknie
Opis:: Antibiotic contamination of natural resources and the receiving environment is of great concern. This brief discussion consists of the sources regarding antibiotic contamination and the analysis of several viable methods of removing antibiotic substances. The sources include domestic discharges, agricultural runoff, and pharmaceutical manufacturing effluents. Antibiotics are classified as emerging contaminants attributed to their persistence in the environment. Antibiotics and their metabolites enter the environment through human and animal urine and faeces. Persistent pollutants are introduced to aquatic ecosystems as they pass the wastewater treatment process. The overuse of antibiotics has led to the emergence of bacteria and genes resistant to antibiotics in the environment. This study provides a descriptive overview of antibiotic sources in the environment, their harmful effects, analytical techniques for its detection in wastewater, related challenges in monitoring antibiotic contamination in water, and recently used techniques for its removal from wastewater and problems associated with current strategies. The study also underscores the importance of understanding the sources and learning how to successfully apply methods to minimise the effects of antibiotic contamination in wastewater.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Nowa technologia wydzielania koncentratów węglowych z odcieków z wirówek odwadniających flotokoncentraty
The New Technology of Separation of Coal Concentrates from Centrifugal Filtrate
Autorzy:: Hycnar, J. J.
Tematy:: odcieki z wirówek odwadniających
węgiel z odcieków
sedyment
effluent form dewatering centrifuge
coal from effluent
sediment; Pokaż więcej
Wydawca:: Polskie Towarzystwo Przeróbki Kopalin
Powiązania:: https://bibliotekanauki.pl/articles/318905.pdf Link otwiera się w nowym oknie
Opis:: Odcieki z wirówek odwadniających koncentraty flotacyjne węgli koksowych, niejednokrotnie stanowią znaczący problem w gospodarce wodno-mułowej, ze względu na wydzielanie gęstej czarnej piany pływającej na powierzchni wody w kanałach spływowych i w zagęszczaczach promieniowych. Do oczyszczania odcieków z fazy stałej stosowane są wybrane flokulanty, umożliwiające ich zagęszczanie i następne wydzielanie w prasach filtracyjnych, uzyskując placki fazy stałej (Sedyment) i oczyszczoną wodę z odcieków. Znaczne ilości odcieków nie jest zagęszczana i filtrowana, a jedynie mieszana z odpadami poflotacyjnymi i zagospodarowywana w wyrobiskach górniczych oraz deponowana w osadnikach odpadów. Przeprowadzone badania wykazują, że fazę stałą w odcieku stanowią hydrofobowe ziarna węgla i hydrofilne ziarna składników mineralnych i węgla. Poprzez zastosowanie selektywnej sedymentacji, umożliwiającej oddzielne wydzielanie ziaren hydrofilnych (warstwa dolna), uzyskuje się wysokiej jakości koncentrat węglowy (warstwa górna, ziarna hydrofobowe). Proces selektywnej sedymentacji można znacznie przyspieszyć i uefektywnić poprzez dodatek do odcieku hydrofobujących reagentów. Na podstawie prowadzonych badań i prób opracowano pilotową instalację wytwarzania koncentratów węglowych z przemysłowych odcieków z wirówek odwadniających flotokoncentraty. Opracowana technologia pozwala otrzymywać koncentraty węglowe o małej zawartości popiołu i wody oraz o wysokich parametrach energetycznych.
The effluents from centrifuges for dewatering flotation concentrates of coking coals give often a significant problem in the silm-water circiut, due to the release of dense black floating foam on the surface of the water in Dorr thickeners. For the purification of the centrifuge effluents, selected flocculants were used. Significant amounts of leachate is not dewatered but only mixed with flotation waste and deposited in waste settling tanks. Carried out studies show that the solid phase in the effluent consists of hydrophobic coal grains and hydrophilic grains of minerals. Through the use of selective sedimentation, allowing separate hydrophilic grains (bottom layer), a high quality carbon concentrate (upper layer, hydrophobic grains) is obtained. The process of selective sedimentation can be significantly accelerated and enhanced by the addition of hydrophobic reactants to the effluent. On the basis of conducted tests and trials, a pilot installation for the production of coal concentrates from industrial effluents from centrifuges was developed. The developed technology allows to obtain coal concentrates with low ash and water content as well as high energy parameters.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Zmienność odpływu ścieków oczyszczonych
Variation of purified wastewater effluent
Autorzy:: Bartkowska, I.
Tematy:: ilość ścieków
odpływ ścieków
zmienność odpływu ścieków
quantity of sewage
sewage effluent
variation of sewage effluent; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/400017.pdf Link otwiera się w nowym oknie
Opis:: Prawidłowa praca elementów systemu odprowadzania i oczyszczania ścieków w dużej mierze zależy od właściwego ich zaprojektowania. Istotne jest również prawidłowe wykonanie i eksploatacja. W projektowaniu najważniejszym parametrem jest miarodajna objętość ścieków. W artykule przedstawiono analizę ilości ścieków na przykładzie miejscowości Olecko. Analizie poddano wielkości odpływu ścieków w latach 2013–2014. Największe miesięczne ilości ścieków zaobserwowano w marcu a najmniejsze w grudniu. Średnia ilość powstających w ciągu doby ścieków wyniosła 2812,3 m³/d. Ilość ścieków zmieniała się od 498,0 m³/d do 6470,0 m³/d. W odniesieniu do liczby mieszkańców jednostkowy odpływ ścieków wyniósł średnio 162,6 l/d M. W artykule przedstawiono również wyniki analizy sezonowości odpływu ścieków, wyboru funkcji autoregresji czy dopasowanie modelu adaptacyjnego.
Proper functioning of the elements of the system of discharge and purification of waste water depends to a large extent on their proper engineering. Correct manufacturing and operation of these elements is also essential. The most important parameter for designing is the wastewater volume. The article presents analysis of the sewage amount with the town of Olecko as an example. Analysed was the volumes of wastewater in between 201 and 2014. The largest monthly wastewater volume was recorded in March and the lowest in December. The average amount of generated sewage per 24 h was 2812.3 m³/full day. The amount of sewage varied between 498.0 m³/full day to 6470.0 m³ /full day. The unit wastewater effluent in relation to the number of population was on the average 162.6 per 24h and inhabitant. The work presents also results of a season variability of sewage effluent, selection of the model of auto-regression or matching of an adaptation model.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Bioremediation of melanoidin contamination in distillery effluent using Aspergillus brasiliensis
Autorzy:: Singh, T.A.
Singh, T.
Singh, R.
Pandey, P.K.
Gaur, R.
Jamal, F.
Patel, S.K.
Bansal, S.
Tematy:: spent wash
effluent
melanoidin
bioremediation
decolorization; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/2097092.pdf Link otwiera się w nowym oknie
Opis:: The current investigation is the first report of utilization of Aspergillus brasiliensis for the decolorization of melanoidin in distillery effluent. The effluent generated from alcohol distilleries is one of the most complex wastewater with a high biological oxygen demand (BOD) and other organic, inorganic, and toxic constituents. The effluent contains melanoidin, a dark brown compound, which is difficult to remediate by using conventional technologies. The disposal of spent wash in the natural environment is hazardous and can deteriorate land and water resources. The decolorization of spent wash through physical and chemical methods remains unsuitable, and the only alternative to decolorize spent wash is biological treatment. In the current study, three fungal strains were isolated from the distillery waste and screened for their ability to decolorize melanoidin.The isolate RS2 exhibited maximum decolorization of 83% and was identified as Aspergillus brasiliensis. Its optimum growth temperature was 37EC, and the maximum efficiency was recorded after 120 h of incubation. Nutritional sources were investigated for the fungi showing the maximum decolorization of melanoidin, and starch and peptone were found to be the best carbon and nitrogen sources, respectively. At 1.5% starch concentration and 1.5% peptone concentration, the decolorization level attained was 87.45% and 88.74%, respectively. A. brasiliensis exhibited a high potential to decolorize melanoidin. The decolorization percentage was high, which makes this fungus a potential candidate for use at the industrial scale for the bioremediation of spent wash.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Evaluation of a Wetland Constructed with Typha domingensis Pers., for the Recovery of Contaminated Water from Hospital Effluents
Autorzy:: Peralta, Inocencia
Cardozo, César
Nakayama, Héctor
Ávalos, Claudia
Benítez, Gilberto
Elkhalili, Ryad
Ayala, José
Arenas, Rossana
Samudio-Oggero, Antonio
Tematy:: bioremediation
Typha domingensis
effluent
pollutant
environment; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/2173364.pdf Link otwiera się w nowym oknie
Opis:: The objective of this research project was to evaluate the implementation of a phytoremediation system for the effluents generated by the National Cancer Institute (INCAN), Central Department, Paraguay to contribute to the management of the liquid waste that it generates. The system consisted of a set of three pools, in which were made up of floating Typha domingensis Pers plants, at an approximate density of 10 plants per m2, all the roots formed a filter, which was in direct contact with the effluent. The effluent was of continuous flow; the flows of entry and exit were regulated according to the generation of liquid waste by INCAN. There were 5 measurements made with an interval of 7 days for each measurement, at a point of entry and exit of the effluent, to determine the system. The parameters evaluated were: BOD5, COD, NTK, PT, pH, temperature, conductivity, turbidity, dissolved oxygen and fecal coliforms. The results showed a considerable reduction of the pollutants generated for all the parameters evaluated, obtaining an efficiency of 67.9 to 92.4% in the evaluated parameters, indicating that it is very feasible to implement this type of systems for phytodepuration of liquid waste.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Phytoremediation of heavy metals from paper mill effluent soil using Croton sparsiflorus
Autorzy:: Ashok Kumar, B
Jothiramalingam, S.
Thiyagarajan, S. K.
Hidhayathullakhan, T.
Nalini, R.
Tematy:: phytoremediation
heavy metals
effluent soil
croton sparsiflorus; Pokaż więcej
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Powiązania:: https://bibliotekanauki.pl/articles/412059.pdf Link otwiera się w nowym oknie
Opis:: Effluents from industries contain appreciable amount of metallic cations like zinc, copper, iron, manganese, lead and cadmium. Release of heavy metal without proper treatment poses a significant threat to public health because of its persistence biomagnifications and accumulation in food chain. To reduce metal pollution problems many processes have been developed for the treatment and disposal of metal containing wastes. Certain plants have the ability to accumulate heavy metals such as Pb, Cr, Cd and Zn. At present, phytoremediation of metals may be approaching commercialization. Hence, possibility can be explored to remove heavy metal load, present even in low concentration, in waste water of paper mill effluent soil by using Croton sparsiflorus.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: The Efficiency of Aquatic Macrophytes on the Nitrogen and Phosphorous Uptake from Pond Effluents in Different Seasons
Autorzy:: Kalengo, Lilian
Ge, Hailong
Liu, Nannan
Wang, Zhijian
Tematy:: biomass
nutrients
phytoremediation
pond effluent
seasonal variation; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/1955528.pdf Link otwiera się w nowym oknie
Opis:: The present study investigated the efficiency of four aquatic macrophytes: Lemna spp, Pistia stratiotes, Ipomoea aquatica and Eichhornia crassipes on nitrogen and phosphorous utilization from aquacultural effluents concerning seasonal changes and biomass production. These nutrients in excess affect fish health and cause eutrophication in water bodies, hence affecting the ecosystem. Aquatic macrophytes were planted in tanks filled with the effluents from carp pond and other tanks were left without plants, serving as control/algal treatment. The water samples were collected weekly for analysis of total nitrogen (TN), ammonia-nitrogen (NH3-N), nitrate-nitrogen (NO3-N), total phosphorus (TP) and ortho-phosphate (ortho-P). The results show that average water temperature raised from 12.2 ± 0.21 °C in winter to 32.0 ± 0.4 °C in summer with no significant difference (p>0.05) between treatments whereas pH was neutral in winter and slightly alkaline in the other seasons. Seasonal changes had impact on macrophytes biomass accumulation with the highest in spring for Lemna spp (91.3%), followed by P. stratiotes (81%) and in summer, E. crassipes (64%). Autumn and winter had the lowest biomass accumulation and I. aquatica had the lowest values in all seasons. For each season, the nutrients concentration decreased with no significant difference (p>0.05) between treatments. Average NH3-N removal efficiencies were higher during summer and autumn followed by spring and lowest in winter for all treatments. NO3-N and TN decreased significantly from the highest in summer to the lowest in winter in all treatments. The ortho-P removal efficiency was slightly higher than TP and decreased from the highest in spring to the lowest in winter (91.4% to 7.8%, control/algae; 90.3% to 8.4%, E. crassipes; 86.2% to 8.3%, Lemna spp; 82.5% to 10.8%, P. stratiotes). The chlorophyll a concentration was higher in Lemna spp (62.2 μg/L) and control/microalgae treatments (59.3 μg/L) indicating that there was probably microbial community that contributed to nutrient utilization. Aquatic macrophytes, in association with microalgae, were responsible for the nitrogen and phosphorous removal. Seasonal temperature change affects the growth and nutrients uptake of aquatic macrophytes. A decrease in temperature reduces the efficiency of nutrients removal and biomass production. For an effective N and P removal from pond effluents in a given season, selection of a proper aquatic macrophyte must be taken into consideration with regards to a given season.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Treatment of Surface Treatment Effluents by Electrocoagulation Process Using Aluminium Electrodes
Autorzy:: Namoussi, Soukaina
Merbouh, Chaimaa
Kabriti, Mohamed
Nahli, Abdelmottalib
Naamane, Ayoub
Chlaida, Mohamed
Iounes, Nadia
Tematy:: electrocoagulation
aluminium electrode
surface treatment
effluent
pollutant; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/2025816.pdf Link otwiera się w nowym oknie
Opis:: The surface treatment industry generates effluents with a high load of highly toxic chemicals which must be treated under increasingly stringent regulation. The aim of this study was to treat the effluents of surface treatment unit of an aeronautical industry by the electrocoagulation process using aluminium electrodes. This process is used to study the performance to remove colloidal load, significant amount of oxidizable material and high levels of various metal elements (Cr, Fe, Zn, Cu and Al) from these effluents, under optimum conditions of pH 7, 8.6A of current intensity and 60 min of application. The electrocoagulation process was found to be effective in reducing turbidity (97.12%), COD (97.5%), SS (97.84%) and conductivity (96.82%), hexavalent chromium (99.99%), Zn (96.82%), Cu (94.3%), Iron (99.9%), Al (91.96%). The treated effluent conformed to the Moroccan standards of surface treatment discharge.
Dostawca treści:: Biblioteka Nauki

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