| 内置转盘式膜-生物反应器处理污水的工艺条件研究 |
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| 中文关键词 内置转盘式膜-生物反应器 膜污染 平衡膜通量 |
| 英文关键词 submerged rotating membrane bioreactor membrane fouling equilibrium membrane flux |
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| 中文摘要 |
| 对内置转盘式膜-生物反应器（SRMBR）处理污水工艺进行了研究。进水COD: 160～368mg/L，出水COD在运行1d后降低到20mg/L以下，去除率大于90%；转盘式膜组件的转速在0～25r/min范围内，平衡膜通量随转速增大而快速增加，继续增大转速则平衡膜通量的增加变得不显著；在一定范围（0～1min）内延长停抽时间有助于缓解膜污染；SRMBR在较低的气水比（15:1）下运行，也可达到较高的平衡膜通量。研究表明，SRMBR在最佳组合操作条件（转速为25r/min，抽/停比为9min/1min，气水比为15:1，抽吸压力为25kPa）下运行，其平衡膜通量高达53.75L/(m2?h)。 |
| 英文摘要 |
| The process for wastewater treatment in Submerged Rotating Membrane Bioreactor (SRMBR) was studied. It was found that the effluent COD reduced to 20mg/L after one day running when the influent COD varied from 160 to 368mg/L. The equilibrium membrane flux increased rapidly with increasing rotation speed of membrane in the range of 0 to 25r/min. Within one minute, the increase of suspended suction time could alleviate the membrane fouling. Moreover, higher membrane flux could be reached even at lower aeration/water ratio (15:1) in SRMBR process. The optimum processing condition was suggested as follows: the rotation speed was 25r/min, suction time/ suspended time was 9min/1min, aeration/water ratio was 15/1, and operation pressure was 25kPa. Under this condition, the equilibrium membrane flux could reach 53.75L/(m2?h). |
