MIAOZhou-wei,BAIHai-long,ZHOUChuan-ting,et al.Application of MBR Ultrafiltration Membrane in Wastewater Treatment of An Industrial Park[J].China Water & Wastewater,2025,41(8):97-102.
MBR超滤膜在工业园区废水处理中的应用
- Title:
- Application of MBR Ultrafiltration Membrane in Wastewater Treatment of An Industrial Park
- Keywords:
- MBR; ultrafiltration membrane; membrane flux; pulse aeration
- 摘要:
- 上海某工业园区污水处理厂设计总规模为5.0×104 m3/d，采用“一厂双线”模式，包括1条设计处理规模为2.5×104 m3/d的化工废水处理线和1条设计处理规模为2.5×104 m3/d的生活污水处理线，其中工业废水处理线主体处理工艺MBR采用微滤膜。MBR技术改造采用超滤膜替代微滤膜，改造后膜系统运行效率大幅提高。重点分析了改造前后运行膜通量、膜曝气能耗和膜清洗成本的变化情况，运行数据表明，采用超滤膜比微滤膜具有更高的可持续膜通量，在运行膜通量为15~20 L/（m2·h）时，跨膜压差可稳定在10 kPa以下，远低于常规MBR微滤膜的跨膜压差，且能够保证出水水质稳定优于《城镇污水处理厂污染物排放标准》（GB 18918—2002）的一级A标准，吨水曝气电耗降低约40%，膜清洗成本降低约44%。
- Abstract:
- The wastewater treatment plant (WWTP) of an industrial park in Shanghai has a total design capacity of 5×104 m3/d, and adopts “one factory dual line” mode with each capacity of 2.5×104 m3/d, including one chemical wastewater treatment line and one domestic sewage treatment line. The main treatment process of the industrial line is MBR using microfiltration membrane. Ultrafiltration membrane is used to replace microfiltration membrane in MBR technical transformation, which significantly improves the operating efficiency of the membrane system. The changes of membrane flux, membrane aeration energy consumption, and membrane cleaning cost before and after the transformation are analyzed. The operating data show that MBR ultrafiltration membrane has a higher sustainable membrane flux than microfiltration membrane. When operating membrane flux is 15-20 L/(m2·h), transmembrane pressure (TMP) is stable below 10 kPa, which is much lower than that of conventional MBR microfiltration membranes. The effluent quality index is better than level A criteria in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). The aeration energy consumption per ton water is reduced by about 40%, and the membrane cleaning cost is reduced by about 44%.
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