Features and Performance of Biological and Ecological Treatment Combination Process for Rural Sanitary Sewage

摘要

Rural sanitary pollution has become the major source of nitrogen and phosphorus pollutants flowing into China's Taihu Lake region. The treatment process of rural sanitary sewage should be consistent with the economic and social development in rural areas as well as the natural and geographical conditions. Biological and ecological treatment combination processes should include biological treatment unit and ecological processing unit. The biological treatment unit can achieve the degradation of organic matter and the inorganic treatment of nitrogen and phosphorus, while and ecological processing unit functions as the advanced treatment and resource utilization of nitrogen and phosphorus. Demonstration projects demonstrate that the combination processes can effectively remove organic matter, nitrogen and phosphorus, performing with low processing costs, simple operation and maintenance and suitable for application and popularization in rural areas.