论文部分内容阅读
以DMP、DEP、DBP和DEHP为目标物质,开展了生物活性炭降解低浓度PAEs的挂膜研究。当进水PAEs浓度为10μg/L且采用人工投加营养物质的方式时,挂膜周期约为30 d;挂膜启动过程中,随着微生物数量和种群的不断增加,生物活性炭对COD_(Mn)、NH_3-N和PAEs的去除效果逐渐变好;挂膜成功后,对COD_(Mn)、NH_3-N的去除率均达到了60%以上,对DMP、DEP和DBP的去除率均维持在95%以上,对DEHP的去除率则稳定在80%左右。生物活性炭对PAEs起降解作用的主要是杆状菌和球状菌,活性炭和微生物的协同作用增强了生物活性炭降解PAEs的能力,尤其对低分子、短侧链的PAEs,生物活性炭的降解效果更好。
DMP, DEP, DBP and DEHP as the target substances, carried out biofilm degradation of low concentrations of PAEs hanging membrane research. When the concentration of PAEs in influent water was 10μg / L and man-made nutrient was added, the hanging-filming period was about 30 days. With the increase of the number of microbes and population, ), NH_3-N and PAEs gradually became better. After the membrane was successfully milled, the removal rates of COD_ (Mn) and NH_3-N reached more than 60%, and the removal rates of DMP, DEP and DBP were maintained at More than 95%, the removal rate of DEHP is stable at about 80%. Activated carbon biodegradation of PAEs mainly bacilli and bacteria spherical, synergistic effect of activated carbon and microorganisms enhance the ability of biological activated carbon degradation of PAEs, especially for low molecular weight, short-chain PAEs, biodegradable activated carbon better .