微污染原水在原水输送及后续工艺中的水质变化  

Changes of Water Quality during Micro-polluted Raw Water Transport and Following Process

作　　者：王卫[1] 朱光灿[1] 周圣东 陆纳新 戎文磊 庄星宇 袁君 

机构地区：[1]东南大学能源与环境学院,江苏南京210096 [2]无锡市自来水有限公司,江苏无锡214031

出　　处：《中国给水排水》2016年第7期10-13,23,共5页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2014ZX07405002)

摘　　要：针对太湖微污染原水,为了保障饮用水水质安全,采用预处理(预臭氧/生物预处理)、常规处理(混凝/沉淀/过滤)与深度处理(臭氧/生物活性炭)联合技术,对无锡市A水源厂和B水厂进行从水源到出厂水的全过程水质分析,主要考察了CODMn、浊度、氨氮、UV254、酞酸酯、多环芳烃和氯消毒副产物的沿程变化情况。结果表明:组合工艺对CODMn、浊度、氨氮和UV254的平均去除率分别为57.6%、99.3%、72.1%和81.9%,对酞酸二甲酯、酞酸二异丁酯和酞酸二丁酯的去除率分别为63.6%、92.4%和60%,对蒽、萘、菲和苯并芘的去除率分别为42.6%、38.4%、57.5%和38.4%。出厂水的三氯甲烷、二氯一溴甲烷、一氯二溴甲烷、三溴甲烷、三氯乙醛、二氯乙酸和三氯乙酸浓度分别为1.75、5.39、9.39、4.83、0.85、0.41和0.50μg/L。采用预处理、常规处理和深度处理相结合的组合工艺能有效降低水体中污染物浓度,可保障出厂水水质安全。To guarantee the safety of drinking water, the combined process of pretreatment （ pr ozonation/biologieal pretreatment ）, conventional treatment （coagulation/sedimentation/filtration） and advanced treatment （O3/BAC） was used to treat the micro-polluted water from Taihu Lake. The water quality of the overall process from water source to finished water of water treatment plants A and B in Wuxi was analyzed, and the variations of CODlin, turbidity, NH4 - N, UV254, PAEs, PAHs and CDBPs were investigated. The results showed that the removal rates of CODMn, turbidity, NH4 - N, UV2s4, DMP, DIBP, DBP, anthracene, naphthalene, luxuriant and benzopyrene were 57. 6%, 99. 3%, 72.1% , 81.9% , 63.6%, 92.4% , 60% , 42.6%, 38.4% , 57.5% and 38.4% respectively. The concentrations of trichloromethane, bromodichloromethane, dibromochloromethane, bromoform, trichloracetaldehyde, dichloroaeetic acid and trichloroacetic acid in the finished water were 1.75 μg/L, 5.39 μg/L, 9.39 μg/L, 4.83 μg/L, 0.85μg/L, 0.41 μg/L and 0.50 μg/L respectively. The cornbined process of pretreatment, conventional treatment and advanced treatment could effectively reduce pollutant concentrations and guarantee the safety of drinking water.

关 键 词：微污染原水 预处理 深度处理 污染物 

分 类 号：TU991.2[建筑科学—市政工程]