复合垂直流构建湿地中生物膜的空间分布、特性和降解性能

复合垂直流构建湿地中生物膜的空间分布、特性和降解性能 Spacial Distribution, Characteristics and Degradation Capability of the Biofilms in Integrated Vertical-Flow Constructed Wetland 吴振斌 WU Zhen-bin~1 1 2 3 4 first-author 李今 LI Jin~ 1 2 3 4 成水平 1 2 3 4 付贵萍 1 2 3 4 贺锋 1 2 3 4 中国科学院水生生物研究所 中国科学院水生生物研究所 1,2), CHENG Shui-ping~1, FU Gui-ping~1, HE Feng~1 1,2), CHENG Shui-ping~1, FU Gui-ping~1, HE Feng~1 中国科学院水生生物研究所 淡水生态和生物技术国家重点实验室 中国科学院水生生物研究所 淡水生态和生物技术国家重点实验室 ,北京,100039 ,北京,100039 湖北武汉430072中国科学院研究生院 湖北武汉430072中国科学院研究生院 对复合垂直流构建湿地基质不同层次进行采样,测定了生物膜的空间分布、脱氢酶活性、呼吸强度、间隙水总有机碳、发育时间及五氯酚的去除率等指标.结果表明,基质生物膜发育良好,可挥发性固体均值达到0.021 8.从下行池整体看,生物膜生物量、呼吸强度、脱氢酶活性及有机污染物去除能力都较上行池高,下行池为污水中有机物的主要降解空间.不同层次生物膜的空间分布存在着差别,生物膜主要积累在0 1 0 cm表层,其脱氢酶活性、呼吸强度高于其他各层次,各指标在变化趋势上存在明显的一致性.生物膜的发育时间直接影响着其对有机碳的降解能力,从10天到70天,降解率提高了5倍.其生物膜基质对五氯酚的去除率是无生物膜基质的1.5倍. Spacial distribution, dehydrogenase activities, respiration, TOC of the interstitial water, development time and PCP degradation in separate layers samples of the substrate of Integrated vertical-flow constructed wetland were measured. Results indicated that the biofilms of the substrate developed well, and its biomass reached to 0.021 8. In down-flow chamber, biomass of biofilms, respiration, dehydrogenase activities and degradation capability of organic contamination were all higher than those in up-flow chamber, and down-flow chamber is the main purifying space of organic in wastewater. The spacial distribution of biofilms in different layers was different, and biofilms were accumulated mainly in 0 1 0 cm top layer, dehydrogenase activities and respiration in top layer were stronger than those in other layers, the distribution of all datum showed positive correlation. Development time of biofilms effected directly the degradation capacity of organic carbon and the degradation rate increased 5 times from 10 th day to 70 th day. The PCP removal rate by the substrate with biofilms was 1.5 times of those without biofilms. 复合垂直流构建湿地 生物膜 空间分布 降解性能 integrated vertical-flow constructed wetland biofilms spacial distribution degradation capacity X37 国家“十五”重大科技专项资助项目（2002AA601021）;国家杰出青年科学基金资助项目（39925007）;湖北省教育厅重点项目资助（2002A00010） 2005-02-01 2021-04-01 2