SUN Gao-sheng,WANG Dong-dong,YI Fan,et al.Advanced Wastewater Treatment Process with Effluent Quality Meeting Level Quasi Ⅳ Criteria of Surface Water in Huai River Basin[J].China Water & Wastewater,2020,36(19):16-23.
淮河流域地表水类Ⅳ类标准污水深度处理工艺研究
- Title:
- Advanced Wastewater Treatment Process with Effluent Quality Meeting Level Quasi Ⅳ Criteria of Surface Water in Huai River Basin
- 关键词:
- 淮河流域; 污水处理厂; 提标改造; 地表水类Ⅳ类标准; A2O/MBR/BAF/O3组合工艺
- Keywords:
- Huai River basin; wastewater treatment plant; upgrading and reconstruction; level quasi Ⅳ criteria of surface water; A2O/MBR/BAF/O3 combined process
- 摘要:
- 针对河南省淮河流域城镇污水处理厂的升级改造问题，通过对当地典型污水处理厂的实地调研，从水质、水量和运行等方面分析该流域污水处理厂的基本特征及所面临的问题，并在此基础上设计开发了污水处理技术路线：A2O/MBR/BAF/O3组合工艺；同时，针对两种典型的污水水质进行模拟实验，研究该组合工艺对不同水质的适应性，并得到最佳运行条件。在最佳运行条件下，组合工艺对COD和氨氮均有较好的去除效果，两者的出水浓度均可以达到地表水类Ⅳ类水质标准。对于有工业废水混入的进水，组合工艺对TN的去除率可达到80%以上，出水TN均值在10 mg/L以下，可以达到地表水类Ⅳ类水质标准；但对于氮源浓度较高的进水，该组合工艺不能确保出水TN达标，可以考虑在BAF单元后面增加反硝化滤池。
- Abstract:
- Aiming at the upgrading and reconstruction of wastewater treatment plant in Huai River basin of Henan Province, field research on local typical wastewater treatment plants was conducted, and basic characteristics and problems of the current wastewater treatment plants in this basin were analyzed from the aspects of water quality, water quantity and operation. On this basis, a combined process of A2O/MBR/BAF/O3 was designed and developed. Meanwhile, two kinds of typical water quality simulation experiments were conducted to explore the adaptability of the process to different water quality and determine the optimal operating conditions. Under the optimal operating conditions, the combined process had good treatment effect on COD and ammonia nitrogen, and their concentrations in the effluent could meet the level quasi Ⅳ criteria of surface water. When the influent mixed with industrial wastewater, the removal efficiency of TN was more than 80%, and the average concentration of TN in the effluent was less than 10 mg/L, which could meet the level quasi Ⅳ criteria of surface water. However, the effluent TN concentration could not always meet the standard when the influent had higher nitrogen concentration. Therefore, it could be considered to add denitrification filter behind BAF unit.
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