强化常规工艺对三卤甲烷前体物的去除效果研究

Removal effect of trihalomethanes precursors by enhanced conventional process

分别通过小试和生产性试验研究了强化混凝和强化过滤对三卤甲烷前体物的去除效果。结果表明,强化混凝能有效提高三卤甲烷前体物的去除效果,两组试验去除率最高分别可提高至50.62%和44.75%;相对石英砂滤池,采用炭砂滤池和活性无烟煤滤池进行强化过滤可将三卤甲烷前体物的去除率提高10%~20%,强化过滤出水加氯消毒后三卤甲烷生成总量比石英砂滤池出水低30%~40%,强化过滤后三卤甲烷生成风险显著降低。

The removal effects of enhanced coagulation and filtration were investigated on trihalomethanes（ THMs） precursors by pilot and productive experiments respectively. The results indicated that the removal effect of THMs precursors could be improved effectively by enhanced coagulation. The maximum removal rates could be obtained for 50. 62% and 44. 75% respectively by these two experiments. Compared with quartz sand filter,the removal rates of enhanced filtration on THMs precursors could be increased from 10% to 20% by carbon sand filter and activated anthracite filter,and the THMs amounts were lower from 30% to 40% after enhanced filtration and chlorine disinfection. The production risk of THMs could be reduced remarkably after enhanced filtration.