城镇净水厂排泥水膜法回收技术研究

Study on recovery Technology of Mud Water Membrane Method in Urban Water Purification Plant

以辽宁省某自来水公司排泥水回收为依托,通过ATR技术对不同的浸没式超滤膜的膜材质和膜污染监测,考察了聚乙烯中空纤维膜(PE膜)与聚偏氟乙烯中空纤维膜(PVDF膜)对污泥回水水质的具体影响效果。结果表明,无论是PVDF膜还是复合PE膜均可有效地实现污泥水净化,去除水中的金属离子Fe、Mn、浊度、色度、COD和有机物。证明了可以通过衰减全反射红外光谱仪(ATR)测试对膜污染情况进行分析,考察排泥水膜污染中无机物和少量生物质成分的粘附。从物理磨损角度分析,柱状膜比丝状膜具有良好的效果,为实际应用提供了潜在的方法。

Membrane separation technology is widely used in the field of water treatment due to its simple operation and high separation efficiency. Based on the sludge reuse project of a water supply company in Liaoning Province, we investigated the specific effects of polyethylene hollow fiber membrane (PE membrane) and polyvinylidene fluoride hollow fiber membrane (PVDF membrane) on the quality of sludge backwater by using membrane separation technology. Both PVDF membrane and composite PE membrane can effectively realize sludge water purification and remove metal ions Fe, Mn, turbidity, color, COD, ammonia nitrogen and organic matter in the water. It is proved that the membrane contamination can be analyzed by ATR test, and the adhesion of inorganic matter and a small amount of biomass in sludge film contamination can be investigated. In terms of physical wear, columnar membrane has better effect than filiform membrane, which provides a potential method for practical application.