典型南方水强化混凝有机物分级处理研究

Enhanced Coagulation and NOM Fractionation Study of a Typical Southern Water

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DAX-8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.