摘要：

北京某镇改扩建5 000 m³/d应急污水处理站，污水来源主要为生活污水及工业废水，其设计进水水质以实测水质及现况污水站设计水质为参考，出水水质执行《城镇污水处理厂水污染物排放标准》（DB 11/890—2012）中B标准。对该污水站的二级处理工艺及深度处理工艺进行了方案比选，综合考虑项目占地、运行管理、处理效果、施工周期及工程投资等因素，最终确定采用“厌氧-缺氧-好氧移动床生物膜反应器（AAO-MBBR）+高密沉淀池+滤布滤池”的处理工艺，大部分工艺构筑物采用一体化装置。详细介绍了该厂站各工艺段的设计参数及附属设施的设计，给出了项目的工程投资，吨水处理成本及实际运行进出水水质指标。工程投产后，经8个月的实际运行，出水水质完全达到《城镇污水处理厂水污染物排放标准》中B标准，为小型污水处理厂站建设提供借鉴和参考。

关键词: 污水处理站, 应急工程, 一体化装置, AAO-MBBR

Abstract:

A modified 5 000 m³/d sewage treatment station would be built in a town of Beijing, the main source of sewage contained domestic sewage and industrial wastewater. The designed influent water quality took measured water quality and designed water quality of the present sewage treatment station as the reference, while the effluent water quality was required to meet Level B of the Discharge Standard of Water Pollutants for Municipal Wastewater Treatment Plants (DB 11/890-2012). Considering factors such as land occupation, operation management, treatment effect, construction cycle and project investment, etc., the progress of anaerobic-anoxic-oxic+moving bed biofilm reactor (AAO+MBBR)+high density sedimentation tank+cloth media filter was selected, with comparing different secondary treatment processes and advanced treatment processes. Most of the process structures employed integrated devices. The investment of the station, water treatment cost per ton, and the influent/effluent water quality indices in real operation were introduced in detail. After the completion of the project, an 8-month actual operation showed that the effluent qualities met the level B of the Discharge Standard of Water Pollutants for Municipal Wastewater Treatment Plants (DB 11/890-2012) completely, providing experience for the construction of similar sewage treatment stations.

Key words: sewage treatment plant, emergency project, integrated device, AAO-MBBR

中图分类号: 

• X703.1