水解酸化-潜流人工湿地工艺在农村生活污水处理中的应用

Treatment of Rural Domestic Wastewater by Hydrolytic Acidification and Subsurface Flow Constructed Wetland

根据农村生活污水水量规模小,水质、水量波动大等特点,采用水解酸化-潜流人工湿地工艺,应用到农村生活污水集中处理中,取得了较好的效果。该系统运行结果表明,在进水CODCr250~600 mg/L,NH3-N 30~35 mg/L下,出水效果总CODCr去除率为71.4%,NH3-N去除率为57%,达到国家一级排放标准,具有运营维护简单、运行费用低等优点,同时对工程设计特点与实践中的问题进行了讨论总结。

Hydrolysis acidification and subsurface flow constructed wetland are applied for the concentrated treatment of rural domestic wastewater as it is characterized by small quantity and large fluctuation of water quality and amount. The performance is excellent. Results indicate that the removal rates of CODer and ammonia nitrogen are 71.4% and 57% respectively when influent CODCr is between 250-600 mg/L and ammonia nitrogen is between 30-35 mg/L, which can meet national level 1 discharge standard. This process is easy to operate and maintain with low cost. Meanwhile, the engineering design and problems in practice are discussed and summarized.