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组合工艺去除垃圾渗滤液中的DBP和DEHP

Keywords: 垃圾渗滤液,生物处理组合工艺,邻苯二甲酸二丁酯(DBP),邻苯二甲酸二(2,乙基己基)酯(DEHP)

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Abstract:

探讨了采用实验室规模的生物处理组合工艺(上流式厌氧污泥床+曝气生物滤池+缺氧反应器+膜生物反应器,UASB+BAF+ANO+MBR)处理垃圾渗滤液过程中,邻苯二甲酸二丁酯(DBP)和邻苯二甲酸二(2-乙基己基)酯(DEHP)两种内分泌干扰物在各工艺段的去除效率和机理。测定结果表明,对于DBP和DEHP浓度分别为164.4μg/L和215.0μg/L的原水,总出水浓度分别降至11.8μg/L和10.4μg/L,去除率分别达到92.9%和95.2%,处理效果良好。其中DBP在处理工艺中逐级降解,主要是微生物的降解作用。MBR是DEHP的主要去除工艺段,去除比例达到56.6%,膜截留效果明显。采用生物处理组合工艺可实现对垃圾渗滤液中DBP和DEHP的同时高效去除。

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