黄浦江上游原水水质特征与处理对策

Characteristic quality and purification measures of raw water taken at the upper-reach of Huangpu River

黄浦江上游原水水质基本为Ⅲ-Ⅳ类,具有藻类较低、高锰酸盐指数高、季节性氨氮较高及低分子量溶解性有机物占多数的特征。常规工艺和强化常规工艺对分子量小于3000的溶解性有机物去除率不到5%,难以使出厂水CODMn降到3mg/L以下。周家渡水厂深度处理生产性应用研究结果表明:预臭氧+常规处理+臭氧活性炭对分子量小于1000的有机物与AOC具有良好的去处效果,能提高水的生物稳定性,改善口感,保障饮用水水质的安全,适合黄浦江上游原水给水厂的改造。

The quality of raw water taken at the upper reach of Huangpu River is level Ⅲ-Ⅳ (by National environmental quality standard of surface water GB 3838-2002), with characters of low alga, high permanganate index, high seasonal ammonia nitrogen and majority of low molecular weight organic matter. Output CODMn of traditional or enhanced traditional water treatment processes is almost above 3 mg/L or removal ratio less than 5 percent for raw water has dissolved organic matter of low molecular weight less 3 000. Results of full-scale applied research in Zhoujiadu Waterworks shown that pre-ozonation + traditional water treatment + ozone-bio-activated carbon (OTOC) process has good removal efficiency for organic matter and assimilable organic carbon (AOC) with molecular weight less than 1 000 to improve bio-stability, taste and odor of water and guarantee drinking water security, so it is the best process for the upper-reach raw water of Huangpu River in waterworks reconstruction.