大同市东郊污水处理厂二期工程工艺设计

Process Design of Second-stage Project of Dongjiao WWTP in Datong City

大同市东郊污水处理厂二期工程设计规模为4×104m3/d,采用内回流式奥贝尔氧化沟、高效反应沉淀池及滤布滤池等处理工艺,尾水采用紫外线消毒,出水水质达到《城镇污水处理厂污染物排放标准》(GB 18918—2002)一级A标准。介绍了工艺方案、工艺流程、主要设计单元参数和实际运行效果等。

The design capacity of the second-stage project of Dongjiao WWTP in Datong City is 4×10^4 m^3/d, the Orbal oxidation ditch with mixed liquor recycle, high efficiency reaction/sedimentation tank and cloth media filter are adopted. The effluent is disinfected by UV technology, and the effluent quality could meet the first level A criteria specified in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant （ GB 18918 - 2002）. The process scheme, treatment process, design parameters of important units and the actual operating results were presented.