【摘要】 小城镇污水处理问题已成为我国新型城镇化建设的一大掣肘,本研究针对四川省较为典型的北部丘陵区乡镇污水处理现状,选取并设计了南充市某乡镇污水的人工湿地处理工艺,其采用的工艺为:预调节池、四级"塘床结构"潜流式人工湿地,重点考察了人工湿地出水中COD,氨氮和色度的去除效果,结果表明COD和氨氮的去除率分别达到69%~81%和46%~85%,并对人工湿地处理过程中的季节性效应作了分析,这对于四川省乡镇污水处理工艺的选择和应用提供了技术参考与实际工程实例。更多还原

【Abstract】 The treatment of wastewater generated in rural area is a problem for new urbanization of China. In order to control the pollution by sewage drainage,constructed wetland is one of the recently proven efficient technologies for wastewater treatment.In this paper,we have verified the applicability of subsurface- flow constructed wetland on the treatment of wastewater,by producing and monitoring a demonstration in the Fuhu Town,Nanchong City. This technology is mainly comprised of pretreatment system,four levels of "pond & bed"treatment units. The results showed that the removal efficiency of COD and NH3-N were69% ~ 81%,and 46% ~ 85%,respectively,and the seasonal effect was discussed as well. This study could provide reference of wastewater treatment technology selection and good application demonstration for typical rural area in Sichuan Province.更多还原