Bottle point experiments were carried out to investigate the effect of powdered activated carbon(PAC) on the removal of MC-RR and MC-LR in Yangtze River raw water. The influences of pH, PAC dosage and prechlorination were also analyzed during the adsorption in different solutions. The results showed that 86 % MC-RR and 71 % MC-LR were removed when adding 10mg/L PAC and reaching equilibrium state. In particular, the adsorption of MC-RR on PAC has greater capacity and faster rate than MC-LR. If more PAC is fed, the removal effect of MCs does not change much while reducing pH to a weakly acidic condition is more propitious to remove MCs by PAC. The influence of MCs removal effect by prechlorination is complicated, depending on the feeding mode of chlorine and PAC.%采用瓶点法考察了粉末活性炭对长江原水中MC-RR和MC-LR的去除效果,并分析了pH、PAC投加量及预氯化对去除效果的影响.研究结果表明,反应平衡时,10 mg/L的PAC对MC-RR和MC-LR的去除率分别达到86％和71％以上,对MC-RR有更快更强的去除效果.增加PAC投加量对MCs去除效果影响较小,但pH降低更有利于PAC对MCs的去除,不同加氯方式对去除效果产生不同的影响.
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