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Role of rural solid waste management in non-point source pollution control of dianchi lake catchments, China

Frontiers of Environmental Science & Engineering 2008年第1期2卷 15-23页

作者： Wenjing LU Hongtao WANG Department of Environmental Science and Engineering Tsinghua UniversityBeijing 100084China

In recent years,with control of the main muni-cipal and industrial point pollution sources and imple-mentation of cleaning for some inner pollution sources in the water body,the discharge of point source pollution decreased gradually,while non-point source pollution has become increasingly distressing in dianchi lake *** one of the major targets in non-point source pollution control,an integrated solid waste controlling strategy combined with a technological solution and man-agement system was proposed and implemented based on the waste disposal situation and characteristics of rural solid waste in the demonstration *** the key techno-logy in rural solid waste treatment,both centralized plant-scale composting and a dispersed farmer-operated waste treating system showed promise in rendering timely ben-efits in efficiency,large handling capacity,high quality of the end product,as well as good economic *** encountered during multi-substrates co-com-posting such as pathogens,high moisture content,asyn-chronism in the decomposition of different substrates,and low quality of the end product can all be tackled.92.5% of solid waste was collected in the demonstration area,while the treating and recycling ratio reached 87.9%,which pre-vented 32.2 t nitrogen and 3.9 t phosphorus per year from entering the water body of dianchi lake after imple-mentation of the project.

关键词： co-composting dianchi lake catchments non-point source pollution rural solid waste

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