نتایج جستجو برای: sewage systems

تعداد نتایج: 1194018  

Journal: :Journal of environmental management 2013
Emanuel M F Brandt Fernanda B de Queiroz Robson J C F Afonso Sérgio F Aquino Carlos A L Chernicharo

This work assessed the behaviour of nine pharmaceuticals and/or endocrine disrupting chemicals (EDCs) in demo-scale upflow anaerobic sludge blanket reactors (UASB reactors) coupled to distinct simplified post-treatment units (submerged bed, polishing ponds, and trickling filters) fed on raw sewage taken from a municipality in Brazil. The dissolved concentration of the studied micropollutants in...

Journal: :New solutions : a journal of environmental and occupational health policy : NS 2002
Ted Schettler

The health care industry makes a unique contribution to the potential public health and environmental impacts of sewage sludge production and disposal. As materials flow into and out of health care facilities, potentially hazardous substances, like mercury, solvents, and pharmaceutical compounds, are introduced into the waste stream and ultimately into sewage sludge. Although the hazards posed ...

2002

The objective of this work was to study the effect of sewage sludge compost on ammonia and nitrate accumulation in the olive-grove soil. This study has been conducted since 1998. To evaluate sewage sludge compost on soil-grove four treatments were set up in a clay loam soil in Seseña (Toledo, Spain). Every experiment was replicated four times. The applied treatments were sewage sludge compost (...

2011
Márcia Regina Thewes Delio Endres Junior Annette Droste

The genotoxicity of untreated and treated sewage from two municipal wastewater treatment plants (WTP BN and WTP SJN) in the municipality of Porto Alegre, in the southern Brazilian state of Rio Grande do Sul, was evaluated over a one-year period using the Tradescantia pallida var. purpurea (Trad-MCN) bioassay. Inflorescences of T. pallida var. purpurea were exposed to sewage samples in February ...

2015
Stephanie L Wear Rebecca Vega Thurber

Coral reefs are in decline worldwide, and land-derived sources of pollution, including sewage, are a major force driving that deterioration. This review presents evidence that sewage discharge occurs in waters surrounding at least 104 of 112 reef geographies. Studies often refer to sewage as a single stressor. However, we show that it is more accurately characterized as a multiple stressor. Man...

Journal: :Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering 2003
Tarek Elmitwalli Ahmed Al-Sarawey Mohammed El-Sherbiny Grietje Zeeman Gatze Lettinga

The anaerobic biodegradability of domestic sewage for four Egyptian villages and four Egyptian cities was determined in batch experiments. The results showed that the biodegradability of the Egyptian-villages sewage (73%) was higher than that of the cities (66%). The higher biodegradability of the soluble COD of village sewage (69%) as compared to that of the cities (46%) was the reason for the...

2012
Ananthi Radhakrishnan M. Ananthasubramanian

Pseudomonas fluorescens phages from sewage were tested against P. fluorescens isolates of soil and sewage. The phages were characterized as to host range, morphology, structural proteins and genome fingerprint. Of the seven phages isolated, one was found to be abundant in sewage (5.9×10(7) pfu/mL), having broad host range, and distinct protein and DNA profile when compared to the other six phag...

Journal: :Annals of the New York Academy of Sciences 2015
Stephanie L Wear Rebecca Vega Thurber

Coral reefs are in decline worldwide, and land-derived sources of pollution, including sewage, are a major force driving that deterioration. This review presents evidence that sewage discharge occurs in waters surrounding at least 104 of 112 reef geographies. Studies often refer to sewage as a single stressor. However, we show that it is more accurately characterized as a multiple stressor. Man...

Journal: :Applied and environmental microbiology 2013
Orin C Shanks Ryan J Newton Catherine A Kelty Susan M Huse Mitchell L Sogin Sandra L McLellan

Microbial sewage communities consist of a combination of human fecal microorganisms and nonfecal microorganisms, which may be residents of urban sewer infrastructure or flowthrough originating from gray water or rainwater inputs. Together, these different microorganism sources form an identifiable community structure that may serve as a signature for sewage discharges and as candidates for alte...

Journal: :The Indian journal of medical research 2009
Srila Gopal Rajiv Sarkar Kalyan Banda Jeyanthi Govindarajan B B Harijan M B Jeyakumar Philip Mitta M E Sadanala Tryphena Selwyn C R Suresh V A Thomas Pethuru Devadason Ranjit Kumar David Selvapandian Gagandeep Kang Vinohar Balraj

BACKGROUND & OBJECTIVE Availability of clean water and adequate sanitation facilities are of prime importance for limiting diarrhoeal diseases. We examined the water and sanitation facilities of a village in southern India using geographic information system (GIS) tools. METHODS Places of residence, water storage and distribution, sewage and places where people in the village defaecated were ...

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