混凝剂投加在新安江水质应急变化时制水工艺的探索  

Exploration of water-making technology by adding coagulant in Xin’an river water quality emergency change

作　　者：胡皓 傅婉芝 徐梦甜 Hu Hao;Fu Wanzhi;Xu Mengtian(Hangzhou Jiande Tap Water Co.,Ltd.,Hangzhou 311600,China)

机构地区：[1]杭州建德自来水有限公司,浙江杭州311600

出　　处：《皮革制作与环保科技》2021年第22期120-122,共3页Leather Manufacture and Environmental Technology

摘　　要：针对建德新安江主城区水域每年梅雨季节汛期(每年五月至七月),源水水质受支流寿昌江返流影响较大,水体浊度可升高至1~20NTU,在通过水厂沉淀、砂滤等工艺后,仍无法满足出厂水质的要求。为了提高新安江汛期时的出厂水水质,需投加混凝剂对水体进行混凝沉淀,将浊度控制在合理范围内。本次实验是利用实验室模拟不同浊度的源水对其进行混凝沉淀,以此探索合理的加药方式,确保在源水水质变化较大的情况下投加混凝剂时,使出水水质达到国家《生活饮用水卫生标准》(GB5749-2006)的要求。In the flood season of Meiyu season(from May to July every year),the water quality of the main urban area of Xin’an River in Jiande is greatly affected by the backflow of Shouchang River,a tributary of the source water,and the turbidity of the water can increase to 1-20 NTU,which still cannot meet the requirements of the factory water quality after the process of precipitation and sand filtration in the water plant.In order to improve the quality of ex-factory water in flood season of Xin’an River,it is necessary to add coagulant to coagulative precipitation and control turbidity within a reasonable range.In this experiment,the source water with different turbidity simulated in the laboratory was coagulated and precipitated,so as to explore a reasonable dosification method and ensure that the effluent water quality meets the requirements of the National Sanitary Standard for Drinking Water(GB5749-2006)when the coagulant is added under the condition of great changes in the quality of the source water.

关 键 词：混凝实验 聚合氯化铝 新安江水 

分 类 号：TU9[建筑科学]