城市污水处理工艺对有机磷酸酯类化合物的去除
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摘要：
城市污水处理厂进水中有机磷酸酯类化合物(OPs)的总质量质量浓度为1106.5μg·L-1,经厌氧好氧工艺三级处理后降至511.7μg·L-1,去除率为53.8%。OPs的去除主要发生在厌氧和好氧环节,非氯代的OPs能够得到较好的去除,而氯代的OPs难以去除(磷酸三(1,3-二氯-2-丙基)酯除外).在污水处理厂剩余活性污泥(脱水污泥)中也检出较高质量质量浓度的OPs,总质量质量浓度为16.9~60.7(μg·kg-1).OPs去除率与其辛醇-水分配系数对数值(logKow)具有较强的相关性(r^2=0.538 85),表明具有较大Kow值的OPs与剩余活性污泥具有较强的吸附作用,进而会影响其在污水处理过程中的去除.
The total concentration of OPs in the influent of municipal sewage plant was 1106.5 μg · L -1 , and reduced to 511.7 μg · L-1 after treated by anoxic/oxic treatment process with the removal rate of 53.8%. The removal of OPs was mainly carried out in the anaerobic process and aerobic process, during which non-chlorinated OPs can be efficiently removed, but chlorinated OPs were persistent and recalcitrant （except tri（dichloropropyl）phosphate）. High concentration of OPs was also detected in the dewatered actived sludge, and the concentration ranged from 16.9 to 60.7μg · kg -1. Significant linear correla- tions with logKow （r2 =0. 539） was observed in the AO process, indicating that the OPs with high octanol-water partition co- efficient （Kow） are prone to be removed by adsorbing on the residual actived sludge.
作者：
庞龙 张肖静 庞榕 赵继红 张宏忠
机构地区：
郑州轻工业学院环境污染治理与生态修复河南省协同创新中心 黄河科技学院医学院
出处：
《betway官方app 学报：自然科学版》 CAS 北大核心 2016年第3期98-103,共6页
基金：
环境化学与生态毒理学国家重点实验室开放基金(KF2013-13) 郑州轻工业学院博士科研基金项目(2013BSJJ023)资助
关键词：
城市污水处理工艺 有机磷酸酯类化合物 去除 吸附
wastewater treatment process organophosphate ester compounds distribution removal
分类号：
X131.2 [环境科学与工程—环境科学]
