酸性条件下零价铁对ASBR降解2,4,6-TCP的强化效应研究  

Reinforcement effect of ASBR on the degradation of 2,4,6-TCP under zero-valent iron and acidic condition

作　　者：杨双[1] 戴友芝[1] 杨基成[1] 胡维[1] 刘凯[1] 

机构地区：[1]湘潭大学环境科学与工程系,重金属污染控制湖南省高校重点实验室,湖南湘潭411105

出　　处：《工业水处理》2014年第8期44-46,58,共4页Industrial Water Treatment

基　　金：国家自然科学基金项目(20977072)

摘　　要：采用进水pH从中性偏碱(pH=8.0)逐步降低到酸性(pH=6.0)的方式启动ASBR,然后在酸性条件下(pH=6.0)运行,考察ASBR对2,4,6-TCP的降解效果,发现投加零价铁有利于2,4,6-TCP的降解:与单独厌氧微生物体系相比,零价铁/厌氧微生物联合体系在三氯酚负荷为112.1μmol/g、进水pH为6.0及持续运行43 d条件下较完全地将2,4,6-TCP降解为苯酚。零价铁有调节体系pH,并保持产酸微生物与耗酸微生物良好平衡关系的作用。ASBR has been started up by way of reducing influent pH gradually from slightly alkaline （pH=8.0） to acidic （pH =6.0）, and then, has run under acidic condition （pH=6.0）. The degradation effectiveness of 2,4,6-TCP by ASBR is investigated. It is found that the dosing of zero-valent iron is good for the degradation of 2,4,6-TCP. Compared with the single anaerobic microbe system, 2,4,6-TCP can be degraded completely as phenol by using the combined system zero-valent iron/anaerobic microbe,when trichlorophenol loading rate is 112.1 Ixmol/g, pH =6.0, and runs continuously for 43 days. Zero-valent iron has the function of adjusting the system pH, and keeping good balance relation between acid-producing microorganisms and acid-consuming microorganisms.

关 键 词：零价铁 厌氧序批式活性污泥反应器 2 4 6-TCP 酸性废水 

分 类 号：X703[环境科学与工程—环境工程]