ZENGMing,GUOQing-he,XUGui?da,et al.Reconstruction and Operation Analysis of WWTP in a Chemical Industry Park[J].China Water & Wastewater,2022,38(18):101-106.
化工园区综合污水厂的工程改造及运行分析
- Title:
- Reconstruction and Operation Analysis of WWTP in a Chemical Industry Park
- Keywords:
- chemical industry park; micro-electrolysis; Fenton; ozone catalytic oxidation; upgrading and reconstruction
- 摘要:
- 某以医药中间体、农药中间体、石化产业为主的化工园区综合污水处理厂原采用Biodopp生化/高效沉淀池/纤维转盘滤池工艺，设计处理规模为5 000 m3/d，出水指标仅BOD5、SS和TP能达到《城镇污水处理厂污染物排放标准》（GB 18918—2002）的一级A标准。针对此问题，采用微电解+芬顿+A2/O+MBBR+臭氧催化氧化+BAF工艺进行了工程改造，在保持处理规模不变的情况下，当进水COD、BOD5、SS、NH3-N、TN、TP、Cl-平均浓度分别为263.8、16.7、107.2、12.22、42.36、4.8、3 998.16 mg/L时，处理出水COD、氨氮、总氮的平均浓度分别为29.17、0.16、7.86 mg/L，去除率分别达到89.11%、98.63%、81.44%，实际出水水质优于一级A排放标准，满足污水处理厂的废水排放标准，总处理费用为4.77元/m3。
- Abstract:
- The original process of the comprehensive wastewater treatment plant (WWTP) of a chemical industrial park focusing on pharmaceutical intermediates, pesticide intermediates and petrochemical industry, is Biodopp biochemical, high efficiency sedimentation tank, and fiber rotary table filter, with a design capability of 5 000 m3/d. Only BOD5, SS and TP indexes can meet the requirements of the first level A criteria specified in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). In order to solve this problem, the process of micro-electrolysis, Fenton, A2/O, MBBR, ozone catalytic oxidation, and BAF was used for reconstruction. With the original treatment capability unchanged, when the average concentrations of influent COD, BOD5, SS, NH3-N, TN, TP and Cl- are 263.8 mg/L, 16.7 mg/L,107.2 mg/L, 12.22 mg/L, 42.36 mg/L, 4.8 mg/L, 3 998.16 mg/L, respectively, the average concentrations of effluent COD, ammonia nitrogen and total nitrogen are 29.17 mg/L, 0.16 mg/L and 7.86 mg/L, and their removal rates can reach 89.11%, 98.63% and 81.44%, respectively. The effluent water quality is superior to the requirements of the first level A discharge standard, and the total cost of wastewater treatment is 4.77 yuan/m3.
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