YANGXiao-fan,ZHANGHong-yu,ZHANGZong-jin,et al.Electroplating Wastewater Treatment by Hydrolytic Acidification, Two-stage A/O and MBR Process[J].China Water & Wastewater,2023,39(2):113-119.
水解酸化+两级A/O+MBR工艺处理电镀废水
- Title:
- Electroplating Wastewater Treatment by Hydrolytic Acidification, Two-stage A/O and MBR Process
- 摘要:
- 针对广东省某项目采用水解酸化+两级A/O+MBR工艺处理电镀废水时出现硝化效果波动的问题，分析了生物处理系统沿程各构筑物的氨氮、硝酸盐氮、总氮、COD及脱氮效果的变化，将两级A/O优化调整为O/O/A/A工艺以强化生物硝化反硝化效率。其中一级A/O调整为O/O后氨氮平均去除率由43%提升至82%；优化后整个生物处理系统一、二期的氨氮平均去除率分别为97.56%、97.65%，调试完成后总氮的平均去除率由最初的71.4%、71.7%分别提升至80.5%、77.3%。
- Abstract:
- Aiming at the problem of nitrification effect fluctuation for an electroplating wastewater treatment plant adopting hydrolytic acidification, two-stage A/O, and MBR process in Guangdong Province, the two-stage A/O process is adjusted to O/O/A/A process to strengthen biological nitrification and denitrification efficiency by analyzing the changes of ammonia nitrogen, nitrate nitrogen, total nitrogen, COD and denitrification effect in various structures along the biological treatment system. The average removal rate of ammonia nitrogen improved from 43% to 82% after the primary A/O was adjusted to O/O. After optimization, the average removal rates of ammonia nitrogen in the first and second stages of the whole biological treatment system are 97.56% and 97.65% respectively. After commissioning, the average removal rates of total nitrogen are improved from the initial 71.4% and 71.7% to 80.5% and 77.3%, respectively.
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