HUANGZhuhui,YANGKai,JIANGQi,et al.Design of the Wastewater Treatment Plant Phase Ⅰ Project in an Industrial Park in Zhejiang[J].China Water & Wastewater,2026,42(4):81-87.
浙江某工业园区污水处理厂一期工程设计
- Title:
- Design of the Wastewater Treatment Plant Phase Ⅰ Project in an Industrial Park in Zhejiang
- Keywords:
- industrial park; wastewater treatment plant; refractory COD; hydrolysis acidification; multi?stage modified AO process; activated coke adsorption
- 摘要:
- 为满足浙江某工业园区工业废水处置要求，新建1座园区污水处理厂，一期建设规模1万m3/d。采用“粗格栅及提升泵房+细格栅及平流沉砂池+水解综合池+多级多段改良型AO生物反应池+二沉池+磁混凝高效沉淀池+反硝化深床滤池+活性焦吸附塔+消毒”工艺。通过水解综合池与多级多段改良型AO生物反应池的协同作用及活性焦吸附塔的高效吸附，可保证对难降解COD的去除效果；同时，根据深度处理系统所需的COD去除量，可灵活调节活性焦吸附塔的流量和运行塔的数量，实现污染物去除量的可控化和经济化。针对较高浓度的总磷（TP），通过生化作用、磁混凝沉淀池的高效絮凝沉降作用，可将出水TP浓度降至0.10 mg/L。工程运行结果表明，该工艺对COD的去除率为80%~92%，总氮（TN）和氨氮（NH3-N）的去除率分别为79%和96%，TP和悬浮物（SS）的去除率均达97%以上，出水水质稳定达到《城镇污水处理厂污染物排放标准》（GB 18918—2002）一级A标准及TP≤0.30 mg/L的限值要求。通过采用集约型深度处理工艺，有效减小了占地面积，可为国内类似工业园区的废水处理提供参考。
- Abstract:
- To meet the stringent wastewater treatment demands of an industrial park in Zhejiang, a new wastewater treatment plant was constructed within its boundaries, with a phase Ⅰ construction capacity of 10 000 m3/d. The core treatment process adopted was “coarse screen and pumping station + fine screen and horizontal-flow grit chamber + hydrolysis comprehensive tank + multi-stage modified AO biological reactor + secondary sedimentation tank + magnetic coagulation high-efficiency sedimentation tank + denitrification deep-bed filter + activated coke adsorption tower + disinfection”. The synergistic effect of hydrolysis comprehensive tank and multi-stage modified AO biological reactor, coupled with the exceptional adsorption capacity of the activated coke adsorption tower, ensured effective removal of refractory COD. Notably, the system allowed for flexible adjustment of the adsorption tower’s flow rate and the number of units in operation based on the required COD removal amount of the advanced treatment system, achieving both controllable and cost-effective pollutant removal. For the high influent total phosphorus (TP), the combined effect of the biological process and the efficient flocculation-sedimentation in the magnetic coagulation sedimentation tank consistently reduced the effluent TP concentration to 0.10 mg/L. Operation results showed that COD removal efficiency reached 80%-92%, total nitrogen (TN) and ammonia nitrogen (NH3-N) removal efficiencies were 79% and 96%, respectively, and TP and suspended solids (SS) removal efficiencies were both above 97%. The final effluent stably met the first level A limit of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002), as well as the strict TP limit requirement of ≤0.30 mg/L. By adopting an intensive advanced treatment process, the land area required has been significantly reduced, which can provide a valuable reference for the wastewater treatment in similar industrial parks in China.
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