نتایج جستجو برای: sewage water

تعداد نتایج: 558583  

Journal: :Occupational and environmental medicine 1998
R Brugha J Heptonstall P Farrington S Andren K Perry J Parry

OBJECTIVE To evaluate the risk of hepatitis A virus (HAV) infection among sewage workers from occupational exposure to raw sewage. METHODS An analytical cross sectional study of 241 company employees with possible occupational exposure to sewage in a large water and sewerage company was carried out. Previous exposure to hepatitis A virus infection was assessed, as were its associations with p...

2007
R. A. El-Motaium

Environmental pollution has become a world wide concern. One of the main sources of such pollution is sewage wastewater and sludge. Their utilization without proper treatment can pollute the ecosystem (plant, soil, surface and ground water). Sewage wastewater and sludge contains several pollutants such as: pathogens, toxic organic compounds, heavy metals, high level of BOD & COD, seed weed. The...

Journal: :Biotechnology progress 2008
Mariko Namura Tomonori Hijikata Kazuhiko Miyanaga Yasunori Tanji

Escherichia coli is used as an indicator microorganism in public health. The conventional way to detect E. coli requires several days to produce a result, because it requires incubation of cells. Therefore a rapid and sensitive detection method is needed. T4e-/GFP phage, characterized by suppression of lysozyme and fusion of GFP (green fluorescent protein) to its SOC (small outer capsid) protei...

Journal: :Marine pollution bulletin 2007
Thomas A Schlacher Julie A Mondon Rod M Connolly

Sewage effluent is a powerful agent of ecological change in estuaries. While the effects of sewage pollution on water quality are usually well documented, biological responses of exposed organisms are not. We quantified health impacts in the form of pathological tissue changes across multiple organs in estuarine fish exposed to elevated levels of treated wastewater. Structural pathologies were ...

2009
K V Heal S Glendinning K E Dobbie H McHaffie

Treatment of polluting discharges from abandoned mines is producing large quantities of ochre (mainly iron (III) oxides) for which no major end-use has yet been identified. At the same time, phosphorus pollution is a serious threat to the water environment in industrialised countries, causing eutrophication, algal blooms, fish kills and loss of water resources. Newcastle and Edinburgh Universit...

Journal: :Antimicrobial agents and chemotherapy 1973
W O Grabow O W Prozesky

The number and properties of drug-resistant coliform bacteria in hospital and city sewage were compared. There was little difference in the counts of organisms with nontransferable resistance to one or more of 13 commonly used drugs. An average of 26% of coliforms in hospital waste water had transferable resistance to at least one of the drugs ampicillin, chloramphenicol, streptomycin, sulfonam...

ژورنال: علوم آب و خاک 2006
حسین شریعتمداری, , مجید افیونی, , مصطفی مبلی, , شهرام رحیلی, , محمدعلی نظری, ,

Sewage sludge and effluents, as cheap sources of irrigation water and fertilizer, can supply plants with water and nutrients however, contamination of these sources with heavy metals and the possibility of human food chain contamination using these sources should be considered. In this research, the effects of industrial sewage sludge and effluents on concentration of some nurtients, heavy meta...

Journal: :Ground water 2011
Pierre Payment Annie Locas

This article discusses the value and limitations of using microbial indicators to predict occurrence of enteric pathogens in water. Raw or treated sewage is a primary source of fecal contamination of the receiving surface water or groundwater; hence, understanding the relationship between pathogens and indicators in sewage is an important step in understanding the correlation in receiving water...

Journal: :Applied and environmental microbiology 1989
C Tartera F Lucena J Jofre

Bacteroides fragilis HSP40 phages have been detected in waters with various levels of fecal contamination of human origin. The average numbers of B. fragilis phages present in sewage water reached 5.3 x 10(3) per 100 ml of water. We found a number 1,000 times lower in a river contaminated with domestic sewage only, in which the levels of fecal coliforms and fecal streptococci were 10,000 times ...

حسین شریعتمداری, , مجید افیونی, , مصطفی مبلی, , شهرام رحیلی, , محمدعلی نظری, ,

Sewage sludge and effluents, as cheap sources of irrigation water and fertilizer, can supply plants with water and nutrients however, contamination of these sources with heavy metals and the possibility of human food chain contamination using these sources should be considered. In this research, the effects of industrial sewage sludge and effluents on concentration of some nurtients, heavy meta...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید