摘要
当源水水质恶化时,由于受技术、经济条件的限制,农村分散式净水工程的出水水质往往难以达标。研究了单一超滤膜、人工湿地/超滤膜、生物接触氧化/超滤膜及人工湿地/生物接触氧化/超滤膜工艺(分别记作系统Ⅰ～Ⅳ)对太湖高藻源水的处理效果。结果表明,与其他3个系统相比,人工湿地/生物接触氧化/超滤膜组合工艺对CODMn、TN、NH4+-N、TP、TMC-LR(总藻毒素)及EMC-LR(胞外藻毒素)的去除效果最佳,对浊度、叶绿素a及IMC-LR(胞内藻毒素)的去除率则无显著差异(p>0.05),在出水水质满足《生活饮用水卫生标准(》GB 5749—2006)的同时还能有效解决超滤膜污染的问题,降低了运行成本。
Due to technological and economic conditions, the quality of treated water from decentralized rural purification projects can not meet water quality standards when the source water quality deteriorates. The treatment effects of single UF membrane （system Ⅰ ）, constructed wetland/UF membrane （ system Ⅱ ）, biological contact oxidation/UF membrane （ system Ⅲ ） and constructed wetland/biological contact oxidatiorr/UF membrane （ system Ⅳ ） on algae-rich source water in Taihu Lake were investigated. The results show that compared with three other systems, the system Ⅳ has the best removal efficiency of CODM,, TN, NH4^＋ - N, TP, TMC-LR and EMC-LR. There is not significant difference （p 〉 0.05） in the removal rates of turbidity, chlorophyll-a and IMC-LR among the four systems. The system Ⅳ not only assures that the treated water quality meets the Standards for Drinking Water Quality （ GB 5749 - 2006）, but also solves the problem of membrane fouling and reduces operational costs.
出处
《中国给水排水》
CAS
CSCD
北大核心
2011年第7期1-5,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(2008ZX07101-002-004)
江苏省环科院江苏省环境工程重点实验室科研开放基金资助项目(KF2009005)
关键词
高藻源水
分散式饮用水处理
人工湿地
生物接触氧化
超滤膜
微囊藻毒素
algae-rich source water
decentralized drinking water treatment
constructed wetland
biological contact oxidation
UF membrane
microcystin
