摘要
为有效控制污水处理厂二级出水在回用水加氯消毒过程中消毒副产物的产生,通过模拟活性炭(GAC)吸附及土壤含水层处理(SAT)实验,研究二级出水经GAC吸附后进行人工地下回灌过程中溶解性有机物(DOM)的迁移及转化规律.利用XAD-8/XAD-4树脂将水样中的溶解性有机物(DOM)分级为疏水性有机酸(HPO-A)、疏水性中性有机物(HPO-N)、过渡亲水性有机酸(TPI-A)、过渡亲水性中性有机物(TPI-N)和亲水性有机物(HPI).HPO-A和HPI为二级水DOM中最主要组分(占到其DOC总含量的75%).GAC能有效吸附二级出水中HPO-A、HPO-N和TPI-A,而对TPI-N和HPI的去除率较低;后续的SAT能有效地去除GAC去除效果不佳的HPI,使DOM的去除率达到70.1%.GAC在有效去除总THMFP的同时(去除率为55.6%),能有效降低HPO-A、TPI-A、TPI-N的三氯甲烷生成活性(STHMFP);后续的SAT处理使系统总THMFP去除率达到67.2%.与单纯的SAT处理相比,GAC+SAT能够有效地降低各组分的STHMFP.
In order to further removal the trihalomethanes precursors in reclaimed water during the secondary effluent reuse,the removal and transformation of dissolved organic matter(DOM) in secondary effluent during the granular activated carbon(GAC) adsorption and the laboratory-scale soil aquifer treatment(SAT) was studied.DOM was fractionated with XAD-8/XAD-4 resins into five classes: hydrophobic acid(HPO-A),hydrophobic neutral(HPO-N),transphilic acid(TPI-A),transphilic neutral(TPI-N) and hydrophilic fraction(HPI...
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2009年第12期46-52,共7页
Journal of Harbin Institute of Technology
基金
国家重点基础研究发展规划项目(973-2004CB418505)
