北京某村镇生活污水处理站工艺设计分析

Process Design Analysis of Domestic Sewage Treatment Station in a Village in Beijing

北京东部村镇快速发展,导致村镇内生活污水总量增大,部分村镇内未设置污水处理站,存在污水直排情况,严重污染村镇生态环境。通过分析北京地区村镇污水水量水质,比选污水处理工艺。确定处理本工程设计处理规模为2000m~3/d,工艺主体为改良AAO+高密沉淀池+滤布滤池。后水质能够满足北京地标《城镇污水处理厂水污染物排放标准》(DB11/890-2012)中B标准的要求。其中改良AAO采用BMR生化池,利用搪瓷罐拼装技术,可模块化布局施工进度快,周期短,对北方地区村镇污水处理有一定的借鉴意义。

The rapid development of villages and towns in the east of Beijing City has led to the increase of the total amount of domestic sewage in the villages and towns.Some villages and towns have not set up sewage treatment stations,resulting in direct sewage discharge situations,which seriously pollute the ecological environment of the villages and towns.By analyzing the quantity and quality of sewage of villages and towns in Beijing area,the sewage treatment technology is compared.It is determined that the project treatment scale is design to 2000m3/d,and the main process is improved AAO+high-density sedimentation tank+filter cloth filter.The treated water quality can meet the requirements of B standard in Beijing landmark“Discharge Standard of Water Pollutants for Urban Sewage Treatment Plants”(DB11/890-2012).Among them,the improved AAO adopts BMR biochemical tank and utilizes enamel tank assembly technology,which can achieve fast construction progress and short period of modular layout,providing certain reference for the sewage treatment of villages and towns in northern China.