| 浸没式新型PVC膜生物反应器在市政污水处理应用研究 |
| 作者: 苏州立升净水科技有限公司,苏州215152 |
| 单位: 苏州立升净水科技有限公司,苏州215152 |
| 关键词: MBR;PVC超滤膜;生活污水;膜污染及控制 |
| DOI号: |
| 分类号: X703 |
| 出版年,卷(期):页码: 2015, 35(4):72-76 |
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摘要: |
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利用一套浸没式新型PVC(Polyvinyl chloride)超滤膜材料的膜生物反应器(membrane bioreactor,MBR)处理市政污水,研究了该新型PVC-MBR的长期运行效果、运行状况及膜污染控制效果。结果表明:新型PVC-MBR对主要污染物COD、NH4+-N、T-P和浊度等有很好的去除效果;对COD、NH4+-N去除率分别可以稳定在90% 和95%以上;外加化学混凝辅助除磷条件下运行可保证出水T-P小于0.5mg/L;膜出水浊度小于0.1NTU,出水水质可达到城市杂用水水质标准(GB/T 18920-2002)的要求。在20L/( m2·h)通量条件下,膜系统运行稳定,TMP基本保持在-35KPa以内,在第195天进行离线化学清洗,通过1000ppmNaClO和0.2%NaOH混合离线清洗后可以使膜运行的TMP恢复至接近新膜通量的水平。 |
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A submerged polyvinyl chloride(PVC)membrane bioreactor (MBR) (PVC-MBR)was used to treat municipal wastewater. The long-term performance, operational state and membrane cleaning of the novel PVC-MBR was investigated systematically. The MBR showed better removals of the main pollutants, such as COD , NH4+-N, T-P and turbidity. The removal efficiencies for COD and NH4+-N were above 90%, and 95%, respectively. The average T-P effluent concentration was less than 0.5 mg/L when chemical coagulation was used in the process. The turbidity of membrane permeate was less than 0.1 NTU. The MBR permeate could meet Chinese reuse standard (GB/T 18920-2002). The membrane system was stable as the TMP was less than -35 KPa at the flux of 20 L/(m2.h). Chemical cleaning was adopted by 1000ppm NaClO mixed with 0.2% NaOH after operating 195 days , and the results showed that TMP conditions of MBR system was recovered to the level of the new one after the cleaning. |
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基金项目: |
| 国家“十二五”水体污染控制与治理科技重大专项项目资助(2011ZX07317-002-2) |
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作者简介: |
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A submerged polyvinyl chloride(PVC)membrane bioreactor (MBR) (PVC-MBR)was used to treat municipal wastewater. The long-term performance, operational state and membrane cleaning of the novel PVC-MBR was investigated systematically. The MBR showed better removals of the main pollutants, such as COD , NH4+-N, T-P and turbidity. The removal efficiencies for COD and NH4+-N were above 90%, and 95%, respectively. The average T-P effluent concentration was less than 0.5 mg/L when chemical coagulation was used in the process. The turbidity of membrane permeate was less than 0.1 NTU. The MBR permeate could meet Chinese reuse standard (GB/T 18920-2002). The membrane system was stable as the TMP was less than -35 KPa at the flux of 20 L/(m2.h). Chemical cleaning was adopted by 1000ppm NaClO mixed with 0.2% NaOH after operating 195 days , and the results showed that TMP conditions of MBR system was recovered to the level of the new one after the cleaning. |
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参考文献: |
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[1]李志东,李娜,张洪林.膜生物反应器(MBR)处理废水的研究进展[J].净水技术,2007,26(1): 18~21。 |
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