XIE Xiao-wang.Application Comparison of Multi-stage AO and Oxidation Ditch Process in a WWTP Expansion Project[J].China Water & Wastewater,2020,36(14):127-130.
多级AO与氧化沟工艺在污水厂扩建工程中应用对比
- Title:
- Application Comparison of Multi-stage AO and Oxidation Ditch Process in a WWTP Expansion Project
- Keywords:
- expansion project; multi-stage AO; high-density sedimentation tank; Carrousel oxidation ditch; denitrification
- 摘要:
- 六安市某污水处理厂扩建规模为1.5×104 m3/d，出水水质执行一级A标准，综合比选确定主体工艺采用多级AO+高密池。与一期卡鲁塞尔氧化沟工艺运行效果对比表明，多级AO工艺的反硝化脱氮能力优于氧化沟工艺，各出水指标均能够稳定达到设计要求。介绍了主要构筑物及设计参数，可为其他类似污水处理厂提标扩建提供参考。
- Abstract:
- By comprehensive comparison and selection, the process of multi-stage anaerobic aerobic(AO)and high-density sedimentation tank is employed in a wastewater treatment plant with expansion capacity of 15 000 m3/d in Lu’an City, and the effluent quality is subject to the first level A criteria in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). The denitrification capability of multi-stage AO process is better than that of the oxidation ditch in the first-stage, and the effluent quality indexes can stably meet the design requirements. The main structures and design parameters are provided as reference for other similar WWTP upgrading and expansion projects.
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