采用强化常规工艺,对有效去除水体有机物,降低DBP前驱物进行了系统研究.通过烧杯试验和现场试验(中试和生产性试验)对强化混凝和使用PAM作助凝剂进行了对比;着重利用吸附树脂DAX8的选择性吸附作用,测定了原水、沉后水的有机物分离分级组成状况发现强化混凝和助凝强化对亲水性致UV254物质有较好地处理效果,去除率可达90%以上;现场条件下强化混凝对疏水碱性物和疏水酸性物有较好的处理能力,相应去除率分别为66%和35%;助凝强化对亲水性有机物效果较好,相应去除率为45%左右;但二者总体去除TOC效果相当.
Systematic studies on enhancing normal treatment processes were performed in order to remove aquatic organic matter economically and efficiently. Enhanced coagulation and polymer coagulant-aid coagulation were compared through jar tests and on-spot experiment (Pilot scale and full-scale experiment). Fraetionations of raw water and water after treatments of above two strategies were performed based on selective adsorption of resin DAX-8. It was found that matters causing UV absorbance at 254nm were well removed by above two treatments; removals of which could be achieved 90 % or more. Hydrophobic bases and acids fractions were more removed under enhanced conditions with removals 66% and 35% respectively; while hydrophilic fraction could be better removed by about 45 % using polymer coagulant aids. But the whole removals of the two strategies were almost equal.