两级膜生物反应器微生物污泥对垃圾渗滤液中酚类化合物和邻苯二甲酸酯的去除。
Removals of phenolic compounds and phthalic acid esters in landfill leachate by microbial sludge of two-stage membrane bioreactor.
机构信息
Department of Environmental Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand.
Department of Environmental Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand.
出版信息
J Hazard Mater. 2014 Jul 30;277:93-101. doi: 10.1016/j.jhazmat.2014.02.044. Epub 2014 Mar 13.
Removals of bisphenol A (BPA), 2,6-di-tert-butylphenol (2,6-DTBP), 2,6-di-tert-butyl-4methylphenol (BHT), di-ethyl phthalate (DEP), di-butyl phthalate (DBP) and bis (2-ethylhexyl) phthalate (DEHP) were monitored in two-stage membrane bioreactor (MBR) by operating under no sludge wastage condition for 500 days. Those emerging contaminants were removed by 99.5%, 99.0%, 99.5%, 97.9%, 96.8% and 95.7% under long term operation in MBR without reaching maximum adsorption capacity of sludge. Biodegradation was the main mechanism for their removals in MBR systems and the microbial activities were enhanced by long sludge age operating condition. The removals of those compounds by microbial sludge in MBR by adsorption and combined (adsorption & biodegradation) mechanisms were well explained by pseudo-second order and first order kinetics, respectively.
在不排泥的条件下，采用两段式膜生物反应器（MBR）连续运行 500 天，监测双酚 A（BPA）、2,6-二叔丁基苯酚（2,6-DTBP）、2,6-二叔丁基-4-甲基苯酚（BHT）、邻苯二甲酸二乙酯（DEP）、邻苯二甲酸二丁酯（DBP）和邻苯二甲酸二（2-乙基己基）酯（DEHP）的去除情况。在 MBR 中，这些新兴污染物在长期运行（无最大污泥吸附容量）下的去除率分别达到了 99.5%、99.0%、99.5%、97.9%、96.8%和 95.7%。在 MBR 系统中，这些物质的去除主要通过生物降解，长污泥龄的运行条件提高了微生物的活性。通过吸附和（吸附和生物降解）组合机制，微生物污泥对这些化合物在 MBR 中的去除可以用伪二级和一级动力学方程很好地解释。
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