改性膨润土吸附强化混凝处理微污染水源水

针对微污染水源水中有机物、氨氮含量较高问题，采用改性膨润土作为吸附剂吸附有机物、氨氮以强化混凝效果。通过不同混凝剂、助凝剂以及不同改性膨润土的对比实验研究，确定吸附混凝最佳联用方式。结果表明：PAC混凝效果优于PFS，壳聚糖助凝效果优于PAM，加活性炭450℃焙烧2 h为膨润土的最佳改性条件。加活性炭450℃焙烧改性膨润土吸附反应30 min后再加PAC混凝剂、壳聚糖助凝剂的吸附-混凝联用，是去除微污染水源水中有机物、氨氮及浊度的最佳处理方法，对微污染水源水CODMn值降低率为65.4%，氨氮、浊度去除率分别可以达到56.7%、97.4%，可取得良好处理效果，值得推广应用。

Modiifed Bentonite Adsorbent Enhanced Eoagulation Treatment of Micro Polluted Source Water

In view of the high content of organic matter and ammonia nitrogen in micro polluted source water. In this experiment, the modiifed bentonite was used as adsorbent to adsorb organic matter and ammonia nitrogen in order to enhance coagulation effect. Comparative study on different types of bentonite by different coagulant, coagulant aid and modiifed bentonite determine the best combination of adsorption and coagulation. Results show: PAC coagulation effect is better than PFS. The effect of chitosan coagulation aid is better than that of PAM and by adding carbon 450℃roasting 2 h is the best method of bentonite clay. By adding carbon 450℃roasting modiifed bentonite adsorption reaction 30 min later,adding PAC coagulant, chitosan coagulant aid is the best treatment method of organic matter, ammonia nitrogen and turbidity in micro polluted source water by adsorption coagulation. The removal rate of ammonia nitrogen and turbidity could reach 56.7%, 97.4%. the decreasing rate of CODMn chould reach 65.4%. Good results can be achieved,it is worth popularizing and applying.