双水源不同原水配比对南方某水厂运行情况的影响

Influence of Dual Water Sources with Different Raw Water Ratios on a WTP Operation in Southern China

针对J水厂的钱塘江、千岛湖水双水源供水格局,分析了不同水源混合比对水厂混合原水水质、出厂水水质、水厂混凝剂、消毒剂、聚丙烯酰胺(PAM)消耗及制水电耗的影响。结果表明,与上年同期相比,千岛湖优质原水比例的升高提高了水厂的原水水质,浑浊度和高锰酸盐指数分别降低26.18%和12%。另外,当混合原水中千岛湖水源水量达到95%以上时,出厂水浑浊度最大下降50%,制水电耗下降25.30%、混凝剂消耗下降60.29%,次氯酸钠消耗最大下降23.82%,而污泥产量、处理的PAM药耗较混合比为25%时下降66.91%、65%左右,水厂运行更加经济高效。

In view of dual water sources water supply of Qiantang River and Qiandao Lake water in J water treatment plant(WTP),the effects of mixing ratio of different water sources on water quality of raw water,water quality of effluent,consumption of coagulants,disinfectants,polyacrylamide(PAM)and power consumption of water operation were analyzed.The results showed that compared with the last year at the same time,the increase in the proportion of high-quality raw water from Qiandao Lake improved the quality of raw water in WTP,and the turbidity and potassium permanganate indices decreased by 26.18%and 12%.When the proportion of Qiandao Lake water source in the mixed raw water was above 95%,the turbidity of produced water decreases by 50%at most,and the electricity consumption of water production decreased by 25.30%.The coagulant consumption decreased by 60.29%,and the consumption of secondary sodium decreased by 23.82%at most.And the sludge production and PAM consumption were about 66.91%and 65%of the 25%mixing ratio,which makes the operation of WTP more economic and efficient.