نتایج جستجو برای: water pollution measurement

تعداد نتایج: 1018697  

Journal: :CoRR 2017
Sanaullah Manzoor Farhan Ahmad Suleman Mazhar

Mobile phone based potable water quality assessment device is developed to analyze and study water pollution level at Indus river. Indus river is habitat of endangered Indus river dolphin and water pollution is one of major causes of survivability threats for this specie. We tested device performance at the six locations of Lahore canal. pH of canal water deviates from the normal range of the i...

2008
Christian Baresel

Relevant implementation of the EU Water Framework Directive with regard to mine water pollution of downstream water bodies requires pressure-impact assessment and catchment-scale economic optimisation of abatement measures. However, pressure-impact assessment is bound to be uncertain. This is because mine water pollution is often an unknown combination of pollution loads, from both known mine w...

2016
Haitao Wu

Normal physiological function requires various minerals, including trace amounts of heavy metals such as zinc, copper and iron, as essential elements to maintain the metabolism. Heavy metals enter the body via food, drinking water, and even breathing air, but excessive levels can induce disorders and diseases. The past hundred years of industrialization and technological advances have brought e...

Journal: :Environmental Health Perspectives 2000

1998
W. Rauch M. Henze L. Koncsos P. Reichert P. Shanahan P. Vanrolleghem

River water quality models are used extensively in research as well as in the design and assessment of water quality management measures. The application of mathematical models for that purpose dates back to the initial studies of oxygen depletion due to organic waste pollution. Since then, models have been constantly refined and updated to meet new and emerging problems of surface water pollut...

2014
Awrajaw Dessie Esayas Alemayehu Seblework Mekonen Worku Legesse Helmut Kloos Argaw Ambelu

Disinfection of contaminated water using solar radiation (SODIS) is known to inactivate bacteria. Its inactivation efficiency depends on local conditions where the disinfection is made. This study was aiming to test the efficiency of solar disinfection using different water parameters as low-cost household water treatment technology. Inactivation of microbes was tested using fecal coliform as t...

Journal: :Current protocols in microbiology 2010
Michael Lea

An indigenous water treatment method uses Moringa oleifera seeds in the form of a crude water-soluble extract in suspension, resulting in an effective natural clarification agent for highly turbid and untreated pathogenic surface water. Efficient reduction (80.0% to 99.5%) of high turbidity produces an aesthetically clear supernatant, concurrently accompanied by 90.00% to 99.99% (1 to 4 log) ba...

Journal: :Chemical & pharmaceutical bulletin 2014
Fumihiko Ogata Moe Kangawa Yuka Iwata Ayaka Ueda Yuko Tanaka Naohito Kawasaki

Raw wheat bran (R-WB) was used as a biomass adsorbent. The properties of R-WB were investigated. Moreover, the adsorption of cadmium and lead ions onto R-WB was evaluated. Adsorption equilibrium of cadmium and lead ions onto R-WB was achieved within 10 h, indicating that the adsorption followed a pseudo-second-order model rather than a pseudo-first-order kinetic model. The adsorption amount inc...

pollution as well as a major threat to the health of the citizens due to the advancement at human civilization, technology development, pesticides and chemical fertilizers application, the increasing exploitation of natural resources by the agricultural sector and the increasing usage of fossil energy. Therefore, the aim of this study is evaluation of citizens’ attitude towards water and soil p...

2015
Keitumetse Idah Nkwe Collins Njie Ateba Nomathamsanqa Patricia Sithebe Cornelius Carlos Bezuidenhout Mark W. LeChevallier

Bacteriophages are regarded as enteric viral indicators in faecally contaminated water systems and may indicate the presence of human viral pollution. They are relatively resistant to inactivation by natural and treatment processes. In this study, the presence of somatic coliphages and F-RNA coliphages was investigated in potable water from rural areas in the North West province. Water samples ...

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