sewage Articles
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Evaluation of
Enterococcus -infecting phages as indices of fecal pollutionNo microbial source tracking tool satisfies all the characteristics of an ideal indicator of human fecal pollution. For this reason, the potential of Enterococcus faecalis phages (enterophages) as markers of this type of contamination was tested by using eight Enterococcus type strains as the possible hosts. The prevalence of enterophages in animal feces and domestic sewage were determined, as ...
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Near-infrared spectroscopic assessment of contamination level of sewage
We examined the use of near infrared (NIR) spectroscopy as a rapid technique for the evaluation of sewage quality. Influent water samples, primary sedimentation tank water samples, and final effluent water samples were collected from sewage treatment facilities in Nagoya, Japan and their NIR spectra obtained. Partial least squares (PLS) models for total phosphate (TP), total nitrogen (TN), ...
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Water quality assessment and heavy metals in sediment, soil and vegetable around Oke–Afa Canal, Lagos, Nigeria
The extent of pollution of water, sediments, plants and soils irrigated with water from Oke–Afa canal Lagos was investigated. The mean values of the alkalinity, dissolved oxygen, chemical oxygen demand, total suspended solids, total dissolve solids, total solids, phosphates, nitrates, pH, temperature and heavy metals were within the acceptable values of water for irrigation except a few which ...
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Study: High Drug Levels Found in the Hudson River
Preventing contamination is first line of defense as researchers seek better wastewater treatment A collaborative study on pharmaceutical contamination distributions in the Hudson River published this year found that levels of some drugs were high enough to potentially harm aquatic life. The study, conducted by the United States Environmental Protection Agency (EPA), Riverkeeper, ...
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Domestic wastewater treatment with a decentralized, simple technology biomass concentrator reactor
A new type of membrane-like aerobic reactor initially designed for the degradation of hydrocarbon-derived groundwater contaminants was tested for treating domestic wastewater. The biomass concentrator reactor (BCR) consists of an enclosed, aerated tank containing a graded filtration medium with the function of solids separation, and was previously used to treat industrial wastewaters ...
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Resistance patterns of
Escherichia coli isolated from sewage sludge in comparison with those isolated from human patients in 2000 and 2009For some time now, antibiotic-resistant bacterial strains have been found in the human population, in foods, in livestock and wild animals, as well as in surface waters. The entry of antibiotics and resistant bacterial strains into the environment plays an important role in the spread of antibiotic resistance. The goal of the present study was to monitor the entry of antibiotic resistances into ...
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Distribution of sterols and the sources of pollution in surface sediments of Ulungur lake, Xinjiang
Domestic sewage discharged into lakes brings great pressure to the ecological environment. This study selected sediment from an inland lake as a research object to evaluate pollution of the environment. Eight sterols were used to evaluate the content of pollutants, while the ratios of sterols were used as the index to analyze the sources of pollution. The correlations were analyzed between ...
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Assessment of burden of virus agents in an urban sewage treatment plant in Rio de Janeiro, Brazil
Sewage discharge is considered to be the main source of virus contamination in aquatic environments. There is no correlation between the presence of viruses and the presence of fecal coliforms in water; therefore virological markers are needed when monitoring contamination. This study investigates DNA and RNA virus concentrations in wastewater and evaluates a potential virus marker of human ...
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Northern Rivers Ecosystem Initiative: Distribution and Effects of Contaminants
In response to a number of recommendations following the Northern Rivers Basin Studies (NRBS) contaminant program, the Northern Rivers Ecosystem Initiative (NREI) focused considerable attention on assessing contaminants from specific sources including pulp mill effluents, atmospheric transport of mercury and the Alberta oil sands operations. NRBS identified a number of major contaminants of ...
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Combining multimedia models with integrated urban water system models for micropollutants
Integrated urban water system (IUWS) modeling aims at assessing the quality of the surface water receiving the urban emissions through sewage treatment plants, combined sewer overflows (CSOs) and stormwater drainage systems. However, some micropollutants tend to appear in more than one environmental medium (air, water, sediment, soil, groundwater, etc.). In this work, a multimedia fate and ...
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WA Assessment levels for Soil & Sediment
Assessment levels for Soil and Sediment in Western Australia were adopted by the Department of Environment and Conservation (DEC) to provide measures which are used in determining whether sites are contaminated. The assessment covers substances which threaten human health and the environment. It is therefore risky if the level of such substances exceeds the assessment levels, implying that it has ...
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Emerging Contaminants in Water in Africa
Access to clean and safe drinking water is a fundamental human right, yet a significant portion of the global population still lacks this essential resource. In Africa, the issue of water quality is of paramount concern, as many regions face challenges related to pollution and contamination. Emerging contaminants in water have become a pressing issue, as they pose potential risks to human ...
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