In order to improve the removal efficiencies of pollutants, to mitigate the membrane fouling, attapulgite as aid for ceramic membrane microfiltration of polluted river water was performed. The results of filtration tests showed that the membrane fouling decreased and the permeate flux and quality increased with the attapulgite increasing. When the dosage of attapulg ite is 0.6 g/L, the removal rates are 75% for CODa, 96% for TP, respectively. The efficiency is better than that of single microfiltration under the same dosage. The permeate flux was 65% greater than that attapulgite was not used, and the flux was 230 L/(m2-h) at transmembrane pressure of 0.10 Mpa and crossflow velocity of 5 m/s. The permeate can be reused under very safe conditions.%采用凹凸棒土作为助滤剂,对陶瓷膜微滤处理污染河水进行了研究.考察了凹凸棒土的添加量对膜污染、CODCr和TP的去除率、渗透液水质等的影响,并对凹凸棒土吸附、单独微滤、以及凹凸棒土作为助滤剂的处理结果进行了对比.研究表明:凹凸棒土作为膜过程的助滤剂,能减轻膜污染,改善出水水质.当凹凸棒土投加量为0.6 g/L,CODCr、TP的去除率分别为75％、96％,比单独微滤的提高了45％和86％.在温度为30℃、膜面流速5m/s,跨膜压差0.10 MPa的务件下,膜通量为230 L/(m2·h),比直接微滤增大了65％.渗透液出水可以安全应用.
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