混凝沉淀/超滤工艺改善苏州河道水的感官品质  

Improving Sensory Quality of River Water by Coagulation Sedimentation/Ultrafiltration Process

作　　者：袁文璟 王朝勇 刘洁 何圣兵[1,3] YUAN Wen-jing;WANG Chao-yong;LIU Jie;HE Sheng-bing(School of Environmental Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Suzhou Water Affairs Bureau,Suzhou 215011,China;Shanghai Engineering Research Center of Landscape Water Environment,Shanghai 200031,China)

机构地区：[1]上海交通大学环境科学与工程学院,上海200240 [2]苏州市水务局,江苏苏州215011 [3]上海生态景观水环境工程技术研究中心,上海200031

出　　处：《中国给水排水》2019年第23期78-84,共7页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2017ZX07205-03);上海市科委科技创新行动计划项目(18DZ2254000)

摘　　要：在苏州市姑苏区环城河边开展现场中试,研究了混凝沉淀/超滤组合工艺对河道水的处理效果。试验结果表明,组合工艺对河道水感官品质的提升效果显著,对浊度、色度的去除率分别为94.16%~96.25%、89.69%~93.86%,出水透明度能够达到2.5 m以上。根据运行中跨膜压差的变化可知,组合工艺对于苏州河道水的最佳PAC投加量为20 mg/L。滤后水的颗粒粒径相比原水明显下降,小分子DOM的占比显著上升。通过三维荧光光谱可知,组合工艺对地表水中腐殖酸类物质具有良好的去除效果,这也是色度去除明显的主要原因。On-site pilot test was carried out for a river in Gusu District of Suzhou City.The treatment effect of a combined process of coagulation sedimentation and ultrafiltration on river water was studied.The combined process had a significant effect on the improvement of the water quality of the river.The removal efficiencies of turbidity and chromaticity were 94.16%-96.25% and 89.69%-93.86%,respectively,and the effluent transparency could reach more than 2.5 m.According to the change of transmembrane pressure difference during operation,the optimal dosage of PAC for the treatment of river water was 20 mg/L.The size of the water particles after ultrafiltration was significantly lower than that of the raw water,and the proportion of small molecules of DOM increased significantly.The 3D-EEM analysis showed that the combined process had a good removal effect on humic acids in surface water,and it was also the main reason for the obvious removal of chromaticity.

关 键 词：河道水 超滤 混凝沉淀 感官品质 色度 

分 类 号：TU992[建筑科学—市政工程]