校园管道直饮水设计及运行

Design and Operation of Direct Drinking Water Project for Campus

为提升饮用水水质,采用“微絮凝砂滤-活性炭吸附-纳滤-紫外消毒”工艺在校园办公楼建成规模为20 m^(3)/d的集中式管道直饮水系统。微絮凝砂滤和活性炭吸附的联合使用,使纳滤系统进水SDI值低于2,从而保证了系统整体的稳定运行。连续一年的现场监测数据显示,纳滤系统的运行压力稳定在0.36 MPa左右,未出现明显膜污染现象,出水水质优于《饮用净水水质标准》,满足直饮要求。

To improve drinking water quality,a centralized direct drinking water system with a capacity of 20 m^(3)/d was built in the campus office building using a combined process containing micro-flocculation and sand filtration,activated carbon adsorption,nanofiltration,and ultraviolet disinfection.The combination of micro-flocculation and sand filtration and activated carbon adsorption markedly reduced the SDI value of the NF influent to less than 2,which guaranteed the stability of the NF system.On-site monitoring data for one consecutive year indicated that the transmembrane pressure of NF was around 0.36 MPa,and the membrane fouling was rather slight.The effluent of the system was complied with the"water quality standards for fine drinking water".