组合工艺控制有机物及消毒副产物前体物的特性研究

通过XAD-8树脂将水中有机物分成疏水性、亲水性两部分,对传统常规处理工艺(混凝气浮、过滤)和深度处理工艺(臭氧氧化、生物活性炭)出水的DOC,UV254THMFP,HAAFP指标以及疏水、亲水有机物去除率进行了检测分析。结果表明,生物活性炭(BAC)单元工艺能同时去除疏水性和亲水性两种有机物,且两者去除率均为最高。其次去除效果较好的是传统的常规工艺。臭氧工艺具有将天然的疏水性有机物氧化成可生化降解的亲水性小分子有机物的特点,在预臭氧+常规以及O3-BAC组合工艺中,起到了强化去除有机物和消毒副产物前体物的效果。

Efficiency of various water treatment processes in DOM and DBPFP control

A pilot plant with traditional and advanced treatment processes such as coagulation, air floatation, filtration, ozonation and biological activated carbon (BAC) was conducted to research the removal of dissolved organic matter (DOM) and the controlling of the disinfection by-products formation potential (DBPFP) substances. The organic compounds in the effluent of each process of this pilot plant were separated into hydrophilic/lyophobic matters using XAD-8 resin adsorption for DOC, UV254, THMFP, HAAFP and DOM examination. The results indicated that BAC appeared to be most effective in removing both hydrophilic and lyophobic compounds. The DBPFP and each fraction of DOM also could be reduced by traditional processes. Ozonation could transform hydrophilic to lyophobic which is likely to be biodegradable. Combination of ozonation and coagulation and O3/BAC were investigated to achieve significant removal in DOC, UV254 and DBPFP.