Oliver Roly, May Eric, Williams John
Department of Civil Engineering, University of Portsmouth, Lion Gate Building, Lion Terrace, Portsmouth, Hants PO1 3HF, UK.
Water Res. 2005 Nov;39(18):4436-44. doi: 10.1016/j.watres.2005.08.011.
This study investigated the fate of phthalates in a trickle filter sewage treatment works. A wide variety of phthalates were researched of which only two were present in significant amounts. Mean concentrations of di-(2-ethylhexyl) phthalate (DEHP) and diethyl phthalate (DEP) measured throughout the system were 23.6 and 25.0 microg/l in raw sewage, 22.0 and 24.8 microg/l in primary, 14.6 and 0.60 microg/l in trickle filter, 18.6 and 0.10 microg/l in humus tank and 18.5 and 0.40 microg/l in reedbed effluents, respectively. Removal by the trickle filter was constantly high for DEP (94-99%) whereas DEHP was variable (<1-44%). Mean concentrations of DEHP and DEP in raw sludge were 30.2 and 1.60 microg/g dry wt, respectively. A mass balance for DEHP was calculated using data from field studies and estimates of sludge production at the works. The mass balance approach helped to provide information that could be used to improve the design and operation of sewage treatment works.
本研究调查了滴滤池污水处理厂中邻苯二甲酸酯的去向。研究了多种邻苯二甲酸酯，其中只有两种含量较高。整个系统中测得的邻苯二甲酸二（2-乙基己基）酯（DEHP）和邻苯二甲酸二乙酯（DEP）的平均浓度分别为：原污水中23.6和25.0微克/升，一级处理后22.0和24.8微克/升，滴滤池中14.6和0.60微克/升，腐殖池中18.6和0.10微克/升，芦苇床流出物中18.5和0.40微克/升。滴滤池对DEP的去除率一直很高（94-99%），而DEHP的去除率则有所不同（<1-44%）。原污泥中DEHP和DEP的平均浓度分别为30.2和1.60微克/克干重。利用现场研究数据和该厂污泥产量估算值计算了DEHP的质量平衡。质量平衡方法有助于提供可用于改进污水处理厂设计和运行的信息。
