Present Status and Technology on Decentralized Treatment of Domestic Sewage in Rural Areas

doi:10.11924/j.issn.1000-6850.2014-1188

Abstract

Abstract: Decentralized treatment of domestic sewage has become a new idea. Due to many advantages such as small investment, convenience of management，high purification efficiency, and low maintenance costs, etc, it is suited for rural domestic sewage treatment. However，the choice of techniques of sewage treatment is directly related to the effects of sewage treatment and the environmental health in an area. In this paper, the present status of treatment of rural domestic sewage both in China and abroad were reviewed, and several technologies of decentralized treatment domestic sewage were introduced, such as constructed wetlands, stabilization pond, artificial floating island, biological filte and anaerobic biological treatment technology. Based on the comparison of advantages and disadvantages of many decentralized treatment technologies being used in China and abroad，their treatment effect，environmental and economic conditions were discussed. Finally, we suggested that, hybrid of different processes has stronger applicability for decentralized treatment domestic sewage, which promoting decentralized treatment facilities in the future.

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