نتایج جستجو برای: point source pollution
تعداد نتایج: 973664 فیلتر نتایج به سال:
Spatial evaluation of complex non-point source pollution in urban–rural watershed using fuzzy system
Research News raditionally, U.S. environmental policy has emphasized mandatory regulations that prescribe limits on emissions of pollutants or the use of specific abatement technology such as scrubbers. While these regulations have protected the environment, they have encouraged firms to concentrate on pollution controls that operate at the end of the factory smokestack or at the point of efflu...
Whereas point sources of nutrients are quite well known and controlled, there is growing concern about non-point sources, especially those that are related to individual homeowners and citizens' practices. They seem to be the hardest to manage and reduce. On-site sewage disposal systems (OSDS) are among the major contributors to the nutrient pollution of surface and ground waters. In Calvert Co...
In many locations around the globe, large reservoir sustainability is threatened by land use change and direct pollution loading from the upstream watershed. However, the size and complexity of upstream basins makes the planning and implementation of watershed-scale pollution management a challenge. In this study, we established an evaluation system based on 17 factors, representing the potenti...
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