小型城镇污水处理厂工程设计方案

Engineering Design Proposal for Small-Scale Municipal Wastewater Treatment Plant

寿光市某小型污水处理厂采用预处理+调节池+AAO池+平流沉淀池+絮凝沉淀池+纤维转盘滤池+紫外消毒渠的工艺,出水COD_(Cr)≤40 mg/L,NH_3-N≤2 mg/L,其余各项指标达到《城镇污水处理厂污染物排放标准》(GB 18918—2002)中一级A排放标准。该文详细介绍了污水处理厂的工艺流程、总平面布置、主要构筑物及设备的设计方案、工程投资及主要经济技术指标等。

The combined processes of pretreatment, homogenize tank,AAO tank , horizontal flow sedimentation tank , flocculation and sedimentation tank,rotary fiber disk filtration and UV tank were used in the small wastewater treatment plant in Shouguang City. COD ＆ of the discharged water was≤ 40 mg/L,and NH3 - N ≤ 2 mg/L,while the other water quality indicators all met the first grade A standards of Discharge Stand ard of Pol lutants for Municipal Wastewater Treatment P la nt （ GB 18918-2002 ） . In this paper the treatment process flow,general layout,design of main structures and equipment,engineering investment and the main economic and technical indicators were detailedly introduced.