industrial wastewater Articles
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Predicting the Toxicity of Oil-Shale Industry Wastewaters by its Phenolic Composition
Abstract : The chemical composition and toxicity of five phenolic wastewaters samples collected from the Kohlta-Järve (Estonia) oil-shale industry region were analysed. The total phenolic contents (HPLC data) of these samples ranged from 0.7 mg/l to 195 mg/l. A total of 11 phenol (up to 84 mg/l) and p-cresol (up to 74 mg/l). Artificial phenolic mixtures were also composed, to mimic the ...
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Ultrasonic irradiation of activated industrial sludge
Sludge is a by-product of wastewater treatment and contains multitude of pollutants. In the present study, irradiation with ultrasound as treatment technique was carried out to treat complex effluent paper sludge, sugar sludge and sewage sludge samples from different industrial places. Wastewater samples were treated in ultrasonic bath at 25 kHz for different time periods of 5 min, 10 min, 20 min ...
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Efficiency vs. Clarity within Wastewater Pretreatment
Industrial wastewater treatment plants play a significant role in preserving the environment, protecting public health and the ecosystem, while also dealing with the dirty water produced by their manufacturing facility. Industrial wastewater treatment facilities are designed to help speed up the natural process of water purification and do so in a way that maintains compliance, meets stringent ...
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Tertiary ozonation of industrial wastewater for the removal of estrogenic compounds (NP and BPA): a full-scale case study
Wastewater treatment plant (WWTP) effluents are considered to be a major source for the release in the aquatic environment of endocrine-disrupting compounds (EDCs). Ozone has proved to be a suitable solution for polishing secondary domestic effluents. In this work, the performance of a full-scale ozonation plant was investigated in order to assess the removal efficiency of four target EDCs: ...
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FTIR spectroscopy as a novel approach towards providing effect‐based endpoints in duckweed toxicity testing
Traditional duckweed toxicity tests only measure plant growth inhibition as an endpoint, with limited effects‐based data. This study aimed to investigate whether Fourier‐transform infrared (FTIR) spectroscopy could enhance the duckweed (Lemna minor L.) toxicity test. Four chemicals (Cu, Cd, atrazine, and acetochlor) and four metals‐containing industrial wastewater samples were tested. After ...
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Correlation of wood-based components and dewatering properties of waste activated sludge from pulp and paper industry
Large amounts of wet sludge are produced annually in municipal and industrial wastewater treatment. Already in pulp and paper industry, more than ten million tons of primary sludge, waste activated sludge, and de-inking sludge is generated. Waste activated sludge contains large quantities of bound water, which is difficult to dewater. Low water content would be a matter of high calorific value in ...
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mini LoP improved performance - Case Study
Meeting very stringent total phosphorous requirements is a challenge for a treatment plant that is receiving wastewater from a dairy process. With a total phosphorous limit less than 100 ppb, a reliable, precise, highly accurate ortho-phosphorous measurement is required to monitor and control the tertiary phosphorous removal process. Small town plants in the upper Midwest commonly encounter this ...
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Analysis of Polychlorinated Biphenyls in Soil
Polychlorinated biphenyls (PCBs), also known as chlorinated biphenyls, are a class of chlorides formed by the substitution of chlorine for hydrogen atoms in the biphenyl ring. PCB is a synthetic organic compound used in industry as heat carrier, insulating oil and lubricating oil. The wide use of PCBs in industry has caused global environmental pollution problems. Waste from factories that use ...
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Water treatment in Brazil
The challenge Many factories in Brazil do not dispose their sewerage in a professional way. Only big enterprises use facilities to treat their industrial waste water, whereas numerous small and medium-sized enterprises convey their sewerage flow into rivers and brooks or pit drainages. This results in a significant environmental burden and endangers the health of the population. In the greater ...
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Crosshole resistivity survey case study 2
Crosshole resistivity survey to search out industrial waste water This exploration survey used the crosshole resistivity technique to observe whether or not an industrial waste water plant is leaking. Chemical analyses found that this specific waste water has a low resistivity compare to normal groundwater. Our recent example shows at depth of 45m a comparatively high resistive zone fabricated ...
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Pollution mapping case study
This exploration survey used the cross-hole resistivity method to detect if there was industrial waste water leakage from an industrial waste water process pond. Chemical analyses concluded that this specific waste water has a much lower resistivity than normal water. The figure below shows that the area above 45m is a relatively high resistive zone made of limestone. Below this depth is a ...
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Water treatment in Brazil - German technology in the field of environment and health - Case Study
The challenge Many factories in Brazil do not dispose their sewerage in a professional way. Only big enterprises use facilities to treat their industrial waste water, whereas numerous small and medium-sized enterprises convey their sewerage flow into rivers and brooks or pit drainages. This results in a significant environmental burden and endangers the health of the population. In the greater ...
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Assessment of hormonal activities and genotoxicity of industrial effluents using in vitro bioassays combined with chemical analysis
Wastewaters from various industries are a main source of the contaminants in aquatic environments. The authors evaluated the hormonal activities (estrogenic/anti‐estrogenic activities, androgenic/anti‐androgenic activities) and genotoxicity of various effluents from textile and dyeing plants, electronic and electroplate factories, pulp and paper mills, fine chemical factories, and municipal ...
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