نتایج جستجو برای: water sewage drainage

تعداد نتایج: 593035  

2015
Richard A. Roline James J. Sartoris

Las Vegas Wash, a natural wash east of Las Vegas, Nevada, carries storrnwater, groundwater drainage, and sewage effluent from two sewage treatment plants to Lake Mead. Over 80 percent of the normal discharge of approximately 3.4 m3/s (120 ft3/s) consists of effluent from the City of Las Vegas and Clark County sewage treatment plants. Beginning in the 1950s, a large wetland area developed along ...

2009

Nonpoint, or diffuse, sources of water pollution include urban sources such as runoff from residential, commercial, industrial, transportation, and recreational land uses; construction activities; and onsite sewage disposal systems and rural sources such as runoff from cropland, pasture, and woodland, atmospheric contributions, and livestock wastes. These sources of pollutants discharge to surf...

Journal: :Journal of environmental biology 2006
S Binu Kumari A Kavitha Kirubavathy Rajammal Thirumalnesan

Sanganur canal is the major open drainage system which has intricate linkage with storm water supply, domestic sewage and industrial effluent disposal. Water samples from various stations were collected and analysed for physicochemical parameters to assess the water quality of the Sanganur canal system. The study revealed that physicochemical parameters like pH, EC, TDS, DO, BOD, COD exceeded t...

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...

2014
A. Hani

Abstract—In recent decades with the development of technology and lack of food sources, sewage sludge in production of human foods is inevitable. Various sources of municipal and industrial sewage sludge that is produced can provide the requirement of plant nutrients. Soils in arid, semi-arid climate of central Iran that most affected by water drainage, iron and zinc deficiencies, using of sewa...

Journal: :Microbes and environments 2016
Chandan Lall K Vinod Kumar R Vimal Raj K Vedhagiri P Vijayachari

Leptospirosis is an emerging disease around the globe. South Andaman Island is an endemic region for leptospirosis. We herein compared the prevalence of leptospires in urban and rural areas of South Andaman Island. The PCR detection and isolation of Leptospira revealed that pathogenic leptospires were prevalent in sewage water and household drainage water in urban areas and in paddy fields, veg...

1996
Peter A. Vanrolleghem Willy Bauwens

It is evident to all those involved in urban water management that three important units need to be considered to assess the performance of an urban drainage system: the sewer, the treatment plant and the receiving water. The sewage transport and treatment system have to be designed and operated with respect to the objectives of the investments made: prevent flooding, ensure hygienic quality in...

1998

In many urban situations, both the municipal sewage system and industrial wastewater treatment are inadequate. A municipal sewage network may be in place, but coverage is usually incomplete, and the level of treatment provided is inadequate. Even where reasonable treatment facilities exist, poor maintenance and operation often result in failure to meet design effluent levels. In such circumstan...

Journal: :محیط شناسی 0
المیرا تاروردیزاده کارشناس ارشد مهندسی عمران محیط زیست دانشگاه تهران علی ترابیان استاد دانشکدة تحصیلات تکمیلی محیط زیست دانشگاه تهران ناصر مهردادی استاد دانشکدة تحصیلات تکمیلی محیط زیست دانشگاه تهران علی اکبر عظیمی استادیار بازنشسته دانشکدة تحصیلات تکمیلی محیط زیست دانشگاه تهران

utilization authorities in sewage companies considered to sludge dewatering methods due to problems and challenges in this field. dewatering by sludge drying beds is considered in present study. this method is preferred to mechanical methods due to the need for very simple technology. due to restriction of natural dewatering, we tried to eliminate some of these limitations by the tests and stud...

2004
Susan Watts

omen play a major role in domestic water management in areas where safe water and drainage are not available in the house. In these settings, women are typically responsible for collecting, storing, and using water and for disposing of wastewater (1,2). Most studies of women's water management and the health benefits of safe water and sanitation examine the effect of protected water sources, su...

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