通过酸、十六烷基三甲基溴化铵（HDTMA）、NaCl、Al2（SO4）3及NaCl-Al2（SO4）3分别改性凹凸棒石,考察其及原土助凝（聚合氯化铝）PAC净化景观河水的效果。结果表明：当PAC投量为60 mg/L时,HDTMA改性凹凸棒石助凝净化COD的效果最好,去除率高达84%;Al2（SO4）3改性凹凸棒石助凝净化TP的去除率最高,达99%;各种凹凸棒石助凝净化NH4＋-N的效果相差不大;NaCl-Al2（SO4）3改性凹凸棒石助凝净化后的浊度去除率最高,达97%。投加原土及各种改性凹凸棒石后,相对于单独使用PAC混凝处理,沉淀污泥体积都大幅度减小,降低了后续污泥处理难度。%The coagulation efficiencies of original attapulgite and modified attapulgites（200 mesh） by acid, HDTMA, NaCl, Al2（SO4）3 and NaCl^- Al2（SO4）3 were investigated by adding them into landscape river water treated by PAC. The results showed that when the PAC dosage was 60 mg/L, the COD removal rate that was up to 84% by HDTMA modified attapulgite was the best; the TP removal rate that was 99% by Al2 （SO4）3 modified attapulgite was the best; the removal efficiencies of NH4^＋-N by various attapulgites were or less the same; the turbidity removal rate that was 97% by NaCl^- Al2（SO4）3 modified attapulgite was the best. The sediment sludge volume of original attapulgite and modified attapulgites by adding them into landscape river water treated by PAC, compared to PAC alone coagulation, were significantly reduced, lowering the follow-up sludge treatment difficulty.
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