CHEN Liang,MO Shao-de,ZHOU Bo,et al.Application of Multi-stage AO+High Efficiency Sedimentation+Denitrification Filter Process in a WWTP with Quasi Class Ⅳ Effluent Standard[J].China Water & Wastewater,2021,37(10):75-78.
多段AO/高效沉淀/反硝化滤池用于准Ⅳ类标准污水厂
- Title:
- Application of Multi-stage AO+High Efficiency Sedimentation+Denitrification Filter Process in a WWTP with Quasi Class Ⅳ Effluent Standard
- 摘要:
- 广东某城镇污水处理厂首期工程规模为2.5×104 m3/d，出水水质执行地表水准Ⅳ类排放标准。生物处理段采用多段AO生化池，能够充分利用原水碳源，减少回流，节约能耗, 提高脱氮除磷效果。深度处理采用高效沉淀池+反硝化深床滤池工艺，以强化总氮、总磷和SS的去除。介绍了主要构筑物设计参数，分析了多段AO和反硝化深床滤池脱氮性能，总结了运行过程中存在的问题，并提出相应措施。实际运行数据表明，出水水质能够稳定达到准Ⅳ类标准。
- Abstract:
- The design scale of the first stage of a wastewater treatment plant in Guangdong was 2.5×104 m3/d. The effluent was required to meet the standard of surface water quasi class Ⅳ. To improve the removal efficiencies of nitrogen and phosphorous, multi-stage AO process was adopted as biochemical treatment technology, which could fully take advantage of the influent carbon source and save energy via reducing backflow. High efficiency sedimentation tank and denitrification filter were adopted to strengthen the removal efficiencies of TN, TP and SS in advanced treatment process. The design parameters of main structures were introduced. The denitrification performance of multi-stage AO and denitrification filter was analyzed. Corresponding measures were proposed to solve the existing problems during the operation process. The actual operating data showed that the effluent quality could stably reach the quasi class Ⅳ standard.
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