A^2O一体化污水处理池在某工业园区污水厂中的应用

Application of A^2O Integrated Wastewater Treatment Tanks in Wastewater Treatment Plant in an Industrial Park

某工业园区污水厂设计规模为500 m^3/d,采用预处理一体化池/生物处理一体化池/深度处理工艺。通过优化设计,预处理一体化池将格栅渠道、进水泵站、隔油沉淀池、集泥池、集油池、调节池整合为一体,生物处理一体化池将水解酸化池、厌氧区、缺氧区、好氧区、二沉池、中间提升泵池、污泥回流泵池、污泥均质池、反冲洗泵池整合为一体。该工艺具有占地面积小、建设和运行费用低、设计和建设周期短、运行管理方便的优点,对工业园区小型污水厂具有较好的适用性。出水水质达到《城镇污水处理厂污染物排放标准》(GB 18918—2002)的一级A标准。介绍了该工程的设计参数、处理工艺流程及其设计特点,可为工业园区小型污水厂的设计提供借鉴。

The combined process of integrated pretreatment tank,integrated biological treatment tank and advanced treatment was used in the wastewater treatment plant with a design capacity of 500 m^3/d in an industrial park. Through the optimization design,the integrated pretreatment tank integrated the grille channels,influent pumping station,oil separation sedimentation tank,sludge collection tank,oil collection tank and equalization tank as a whole. Integrated biological treatment tank integrated the hydrolytic acidification tank,anaerobic zone,anoxic zone,aerobic zone,secondary sedimentation tank,intermediate lift pumping tank,sludge pumping tank,sludge equalization tank and backwashing pumping tank as a whole. The combined process has the advantages of small footprint,low investment and operation cost,short design and construction period and convenient operation and management,and it has good applicability to the small-scale wastewater treatment plant in the industrial park. The effluent quality could meet the first class A criteria specified in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant( GB 18918-2002). The design parameters,process flow and design characteristics of this project were presented to provide reference for design of the small-scale wastewater treatment plant in the industrial park.