【摘要】 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、NH₃-N和PAEs的去除效果逐渐变好;挂膜成功后,对COD_Mn、NH₃-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。更多还原

【Abstract】 Taking DMP,DEP,DBP and DEHP as the target substances,the experimental research on biofilm formation on the biological activated carbon for removing low-concentration phthalic acid esters（PAEs） was carried out.The results showed that the biofilm formation cycle was about 30 d with influent concentration of 10 μg/L for PAEs and artificial addition of nutrients.During biofilm formation,the removal efficiencies of COD_Mn,NH₃-N and PAEs were increased with increase in microbial number and population.After the successful formation of biofilm,the removal rates of COD_Mn and NH₃-N reached more than 60%,the removal rates of DMP,DEP and DBP were maintained above 95%,and the removal rate of DEHP was stable at around 80%.Bacilli and cocci in biological activated carbon process played a major role in the degradation of PAEs,and the synergy of activated carbon and microorganisms could enhance the degradation of PAEs,especially for low molecular/short side chain PAEs,their degradation effect was better.更多还原