碳素纤维去除富营养化水体氮磷的动力学研究  

DYNAMIC FEATURES OF N / P REMOVAL FROM EUTROPHIC WATER BY USING CARBON FIBER

作　　者：周小颖[1] 黄力群[1] 郭子军[1,2] 牛远[2] 姚理为 刘勇丽 

机构地区：[1]湘潭大学化工学院,湖南湘潭411105 [2]中国环境科学研究院环境基准与风险评估国家重点实验室,北京100012 [3]湖南鑫力恒环保科技有限公司,长沙410000

出　　处：《环境工程》2015年第9期25-30,共6页Environmental Engineering

基　　金：国家水体污染控制与治理科技重大项目(2012ZX07101-001)

摘　　要：以碳素纤维(CF)为生物膜载体,研究了CF微生物附着特征以及CF和生物碳素纤维(BCF)去除污水氮磷的动力学特征,并考察了曝气量、pH和水力停留时间(HRT)对污水氮磷去除效果的影响。结果表明:CF具有良好的微生物附着特性,挂膜启动快,附着生物量大且生物膜较薄,更有利于生物膜的传质。CF和BCF对氮磷均有较好的去除效果,其中BCF对TP的去除率大于90%,且BCF氮磷去除稳定时间比CF快。CF和BCF氮磷去除规律比较符合指数型,磷的指数拟合度(R2)要优于氮。增加曝气量有利于氮磷的去除,但超过0.15 L/min时TN、NH+4-N的去除率反而降低。弱碱性条件有利于氮磷的去除,最佳HRT为6h。Using carbon fiber（ CF） as a biofilm support,the biofilm characteristics and dynamic features of N / P removal from wastewater by using CF and biological carbon fiber（ BCF） were studied,and the effects of aeration rate,pH and HRT on N /P removal were investigated as well. The results were as follows： 1） CF had excellent biological compatibility and the biofilm was thinner and fast-forming,which was favorable to mass transfer; 2） the N / P removal efficiencies by CF and BCF were both preferable. The TP removal efficiency by BCF was above 90%,and the balance time of BCF was shorter than that of CF;3） the N / P removal dynamic features of CF and BCF fit the exponential model well,and the fitting degree of phosphorus was superior to nitrogen; 4） the optimum operating conditions of aeration rate,pH and HRT were 0. 15 L / min,8 and 6h,respectively.

关 键 词：碳素纤维 富营养化水体 生物膜法 氮磷去除 动力学特征 

分 类 号：X703[环境科学与工程—环境工程]