生物活性炭降解低浓度邻苯二甲酸酯的挂膜研究  

Biofilm Formation on Biological Activated Carbon for Degradation of Low-concentration PAEs

作　　者：陈秋丽[1,2] 张朝升[1] 刘宏英[1] 荣宏伟[1] 张可方[1] 

机构地区：[1]广州大学省部共建教育部珠江三角洲水质安全与保护实验室,广东广州510006 [2]仲恺农业工程学院城市建设学院,广东广州510225

出　　处：《中国给水排水》2017年第1期12-16,共5页China Water & Wastewater

基　　金：国家自然科学基金资助项目(21477027;51278133);广东省科技计划项目(2014A020216049);广州市教育系统创新团队项目(13C01);广东省高校创新人才项目(2014KQNCX105)

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)、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。Taking DMP, DEP, DBP and DEHP as the target substances, the experimental re- search 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 CODMn, NH3 - N and PAEs were increased with increase in microbial number and population. After the successful formation of biofilm, the removal rates of CODM. 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 degra-dation effect was better.

关 键 词：生物活性炭 邻苯二甲酸酯 挂膜 

分 类 号：TU991.2[建筑科学—市政工程]