漓江风景名胜区沿岸乡镇污水处理与排放方案

Sewage Treatment and Discharge Plan of Lijiang Scenic Coastal Villages and Towns

在综合考虑漓江风景名胜区沿岸乡镇污水特性、污水排放要求、受纳水体景观影响和经济技术因素的基础上,从污水收集方式、处理规模、处理工艺、出水标准等方面,构建景区沿岸乡镇污水处理方案,并提出乡镇小片区和大片区污水处理方案的主要工艺流程及技术指标。研究表明:乡镇小片区污水处理宜采用高效地埋无动力生物反应器处理系统,乡镇大片区污水处理宜采用一体化A/O生物反应器处理系统,并根据乡镇环境特征和景观要求设计景观塘排放和污水扩散器排放等排放方式。

For the sewage characteristics, discharge rules, water body visual impact, economic and technologi-cal factors, sewage treatment plan of coastal towns is constructed according to sewage collection, scale of treat-ment, treatment technology and discharge pollutant standard.The main process and technological indexes of small-area and large-area sewage treatment plan are proposed .Recent study shows that efficient underground unpowered biological reactor system could be applied to small-area sewage treatment, integration of A/O biologi-cal reactor system could be applied to large-area sewage treatment.Good pond filter system and sewage diffuser are put forward based on the environmental characteristics and landscape rules for coastal towns .