混凝-超滤短流程工艺处理北方水库原水

Treatment of raw water of northern reservoir by coagulation/ultrafiltration membrane short technological process

采用混凝-超滤膜短流程工艺对大伙房水库原水进行处理,考察其除污染性能和膜污染情况,并对该短流程工艺参数进行优化。结果表明,当利用超滤膜直接过滤原水时,膜污染较重,并且对污染物质的去除率较低;而采用混凝-超滤短流程工艺时,膜污染得到一定程度上的缓解;当絮凝剂投加量为7 mg/L、膜清洗周期为30 min时,对浊度、COD Mn和UV254的去除率分别为95.61%、40.42%和37.12%,出水水质能够满足生活饮用水卫生标准。

We adopted the coagulation/ultrafiltration membrane short technological process to treat the raw ~sater of Dahuofang Reservoir and investigated the pollution removal performance and the membrane pollution of this process. In addition, we optimized the parameters of this short technological process. The experiment indi- cates that serious membrane fouling is produced if the raw water is directly filtered by ultrafiltration membrane and the removal rate of pollutants remains at a low level; when the coagulation/ultrafiltration membrane short technological process is applied, membrane fouling could be relieved to some extent. When flocculent is added by 7 mg/L and the cleaning period of the membrane is 30 minutes, the removal rates of turbidity, CODMn and UV254 are 95.61% , 40.42% and 37.12% , respectively, and the quality of yielding water could meet the hygi- enic standard for drinking water.