YANGJin-ming,LINChun-xiao,DONGJun,et al.Application of Multi-stage Flow-separated Technology in Sewage Treatment Station with High Discharge Standard[J].China Water & Wastewater,2024,40(2):65-69.
多级速分工艺在高排放标准污水处理站的应用
- Title:
- Application of Multi-stage Flow-separated Technology in Sewage Treatment Station with High Discharge Standard
- Keywords:
- flow-separated biochemical technology; high discharge standard; sewage treatment station; air floatation
- 摘要:
- 昆明市某河道治理配套污水处理站设计规模为7 500 m3/d，采用初沉池—多级速分生化池—斜管沉淀池—气浮池—纤维转盘滤池组合处理工艺。经过几年运行，污水处理站出水各项指标均优于昆明市《城镇污水处理厂主要水污染物排放限值》（DB 5301/T 43—2020）B级标准，单位水量处理经营成本为1.63 元/m3。采用“好氧-缺氧-好氧-缺氧-好氧”五级速分生化技术，占地面积小、启动快、处理效果好、污泥产量低、操作方便，可应用于小型高排放标准污水处理工程。
- Abstract:
- The design scale of a sewage treatment station for river remediation in Kunming is 7 500 m3/d, and its combined treatment process consists of primary sedimentation tank, multi-stage flow-separated biochemical tank, inclined tube sedimentation tank, air floating tank and fiber rotary disk filter. After several years of operation, the effluent indicators of the sewage treatment station are better than the level B limits specified in Discharge Standard for Urban Sewage Treatment Plant (DB 5301/T 43-2020) issued by Kunming, and the operational cost is 1.63 yuan/m3. The application of the five-stage “aerobic-anoxic-aerobic-anoxic-aerobic” flow-separated biochemical technology demonstrates the advantages of small footprint area, short startup time, good treatment performance, low sludge yield and easy operation, which can be applied in small sewage treatment projects with high-discharge standard.
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