摘要
考察了DS水厂纳滤膜处理系统对地下水的净化效果。结果表明,在纳滤膜前增加碟片过滤及超滤预处理工艺可以提高系统的净化效果,且可有效保护纳滤膜,减少化学清洗频率,以及延长纳滤膜的使用寿命;该系统运行情况良好,出水水质较好,硬度、碱度及硝酸盐去除率分别可以达到94%,92%和58%。
The purification effect of nanofiltration membrane treatment system on groundwater was investigated in the DS Waterworks. The results showed that it could improve the purification effect by adding a disc filtration and ultrafiltration pretreatment process before the nanofiltration membrane. It could protect the nanofiltration membrane effectively, decrease chemical cleaning frequency and extend the using time of nanofiltration membrane. This system had satisfied operation conditions, kept good outflow quality and the removal rates of water hardness, alkalinity and nitrate could reach 94%, 92% and 58% , respectively.
出处
《供水技术》
2013年第2期9-11,15,共4页
Water Technology
关键词
纳滤膜
地下水
硬度
碱度
硝酸盐
清洗
nanofiltration membrane
groundwater
hardness
alkalinity
nitrate
cleaning
