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Experimental study of behavior of endocrine-disrupting chemicals in leachate treatment process and evaluation of removal efficiency

机译:内分泌干​​扰物在渗滤液处理过程中行为的实验研究及去除效果的评估

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摘要

An experimental study of the behavior of endocrine-disrupting chemicals (EDCs) in leachate treatment processes (aeration, coagulation and sedimentation, activated carbon adsorption, and advanced oxidation) was conducted and removal efficiencies were evaluated. Among target EDCs, concentrations of BPA (1800 times), DBP (10 times), BBP (40 times), and DEHP (30 times) in leachate are more than ten times higher than those in surface water. BPA, DBP, and BBP can be treated by aeration and DEHP, by advanced oxidation processes. BPA could not be effectively removed by coagulation and sedimentation because most of BPA partitioned in the supernatant. DEHP could hardly be treated by aeration. The removal ratios of DEHP were approximately 50 to 70% if the generated sediment was removed completely. The removal ratios of DEHP in leachate of 100 m3/d with 100 kg of activated carbon were 50 to 70%, assuming a complete mixing model. The concentration of DEHP was decreased to below one-tenth in 120 min by advanced oxidation processes.
机译:对渗滤液处理过程(曝气,凝结和沉淀,活性炭吸附和高级氧化)中内分泌干扰化学物质(EDC)的行为进行了实验研究,并评估了去除效率。在目标EDC中,渗滤液中的BPA(1800倍),DBP(10倍),BBP(40倍)和DEHP(30倍)的浓度比地表水中的浓度高十倍以上。 BPA,DBP和BBP可以通过曝气和DEHP,通过高级氧化工艺进行处理。由于大多数BPA在上清液中分配,因此无法通过凝结和沉淀有效去除BPA。 DEHP很难通过曝气处理。如果将产生的沉淀物完全清除,DEHP的清除率约为50%至70%。假设采用完全混合模型,在100 m3 / d的渗滤液中含有100 kg活性炭的DEHP去除率为50%至70%。通过先进的氧化工艺,DEHP的浓度在120分钟内降至十分之一以下。

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