نتایج جستجو برای: water pollution control
تعداد نتایج: 1870981 فیلتر نتایج به سال:
Wet-collector systems, designed and operated for air-pollution control without concern for or con sideration of the stream-pollution effects of their liquid-borne wastes, may cause significant localized pollution of surface and ground water bodies. Wet collector systems can be designed with presently known technology to decrease contaminants in effluent outfalls to acceptable levels. Increasi...
Effective legislation is the main driving force in controlling pollution and, indirectly in economizing in the use of water in industry. The control is exercised by municipal authorities over the discharge of waste water to public sewers or of river agencies that determine the quality of discharges to rivers. Important factors in the reduction of pollution in the metal finishing industries are ...
amir kabir dam was built in varian strait, at 23 km north of karaj in 1961. the dam is multipurpose and its maim aims are the spring floods control, supplying potable water for tehran city, producing electricity and providing irrigation water. different pollutants which discharge to the river finally enter to the dam reservoir. determining the pollution loads of the dam sub-catchments can help ...
Abstract Drinking water source is an important guarantee of domestic for urban residents, which has been affected mainly by non-point pollution and aroused widespread concern in various countries. However, with the change underlying surface types, there are significant differences control strategies. In this study, two strategies were proposed typical conditions high-density built-up agricultur...
a r t i c l e i n f o This paper investigates the effect of governance on levels of water pollution for all industrial activities as well as by some specific industry category in a sample of OECD economies. Using an institutional ecological economic conceptual framework, the effects of several measures of governance are empirically examined. Our findings reveal that the rule of law, regulatory ...
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