生物膜与紫外光耦合降解苯酚及微生物群落的变化

夏四清; 阎宁; 朱骏; 张永明

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Biofilm coupled with UV irradiation for phenol degradation and its change of community structure

首发时间：2010-12-28

Xia Siqing ¹
Xia Siqing, (1964-), PhD, Professor, Main research on wastewater treatment
Yan Ning ² Zhu Jun ³ Zhang Yongming ³
张永明 (1958-),博士，教授，主要研究领域：水处理技术，生物反应器工程，环境生物技术

1、College of Environmental Science and Engineering, Tongji University
2、 College of Environmental Science and Engineering, Tongji University
3、Department of Environmental Engineering, Shanghai Normal University

Abstract：The extensive use of phenol compounds and the inability to remove these compounds during wastewater treatment have resulted in the widespread occurrence of phenols in the natural environment. Phenols have been linked to serious risks to human and environmental health. Hence the need to develop methods for the removal of phenols from wastewater and source waters is a pressing challenge for our time. In this study, light ceramic particles were immersed in activated sludge acclimated to degrade phenol, and microorganisms were allowed to attach to the particles surface to form biofilm, then the ceramic particles with biofilm were moved into the photolytic circulating-bed biofilm reactor (PCBBR) made of quartz glass, which was used for degradation of phenol by three protocols:　photolysis with UV　light alone (P), biodegradation alone (B), and the two mechanisms operating simultaneously (photobiodegradation, P&B).　The experimental results indicated that phenol removal rate was quickest by B experiment. However, P&B experiment gave more complete mineralization of phenol than that by other protocols. During P&B experiment, the microorganisms grown on porous ceramic carrier still kept the bioactivity degrading phenol, even under UV light irradiation. But the dominant members of the bacterial community changed dramatically after the intimately coupled photo-biodegradation, according to molecular biological analysis to the biofilm. Whereas Beijerinckia sp. was the dominant strain in the inoculum, it was replaced by Thauera sp. MZ1T that played a main role on degrading phenol during P&B experiment.

keywords： ultra violet irradiation biofilm phenol photolytic circulating-bed biofilm reactor molecular analysis

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生物膜与紫外光耦合降解苯酚及微生物群落的变化

夏四清 ¹
Xia Siqing, (1964-), PhD, Professor, Main research on wastewater treatment
阎宁 ¹ 朱骏 ² 张永明 ²
张永明 (1958-),博士，教授，主要研究领域：水处理技术，生物反应器工程，环境生物技术

1、同济大学环境科学与工程学院
2、上海师范大学环境工程系

摘要：由于酚类化合物的广泛使用以及一般废水处理过程不易去除该类化合物导致自然环境中广泛地存在该类化合物。苯酚具有对人体健康潜在的威胁性。因而有必要对这一类废水进行处理。本研究采用轻质陶瓷颗粒浸渍于驯化后的苯酚降解污泥中使其表面生成生物膜后置于用石英玻璃制成的循环床式光解生物膜反应器中，分别采用单独光解(P)，单独生物降解(B)和光解与生物降解耦合(P&B)3种方法降解苯酚。实验结果表明，采用单独生物方法降解苯酚时，其降解速率较快，但光解与生物膜耦合方法则可以使苯酚的矿化程度较高。在P&B方法中，生长于多孔陶瓷上的微生物膜即使在紫外辐射条件下，仍保持降解苯酚的生物活性。根据对生物膜的分子生物学的分析，微生物种群发生了较大的变化，在单独生物降解过程中，Beijerinckia sp.其主要作用，而在P&B过程中，Thauera sp. MZ1T则其主要作用。

关键词：紫外辐射生物膜苯酚光解循环床生物膜反应器分子生物学分析

基金：

1. National Natural Science Foundation of China （50978164 and 50678102) and the Special Foundation of Chinese Colleges and Universities Doctoral Discipline）

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Xia Siqing,Yan Ning,Zhu Jun,et al. Biofilm coupled with UV irradiation for phenol degradation and its change of community structure[EB/OL]. Beijing:Sciencepaper Online[2010-12-28]. https://www.paper.edu.cn/releasepaper/content/201012-1194.

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论文编号	201012-1194
论文题目	生物膜与紫外光耦合降解苯酚及微生物群落的变化
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