| 3种不同工艺切换下活性污泥菌群结构及代谢产物对污泥沉降性能的影响 |
| |
| 引用本文： | 温丹丹,袁林江,陈希,王洋,申童童,刘小博.3种不同工艺切换下活性污泥菌群结构及代谢产物对污泥沉降性能的影响[J].环境科学,2018,39(10):4644-4652. |
| |
| 作者姓名： | 温丹丹 袁林江 陈希 王洋 申童童 刘小博 |
| |
| 作者单位： | 西安建筑科技大学陕西省环境重点实验室西北水资源环境与生态重点实验室;西安工程大学环境与化学工程学院 |
| |
| 基金项目： | 国家自然科学基金项目（50878180） |
| |
| 摘 要： | 均以乙酸钠为碳源,考察了AAO脱氮除磷(Ⅰ阶段)、AO脱氮(Ⅱ阶段)、好氧除碳(Ⅲ阶段)这3种工艺下污泥沉降性能的变化,追踪了污泥中微生物群落结构的演替、监测了微生物代谢产物的含量及组分变化,分析运行方式对污泥沉降性能变化的影响.结果表明,Ⅰ阶段沉降性能最佳,其次为Ⅲ、Ⅱ阶段.运行条件的不同,系统优势菌及菌群结构都发生了显著变化,其中Thiothrix的相对数量是影响污泥沉降性能变化的主导细菌.在接种污泥和Ⅰ阶段Thiothrix的丰度仅为0.08%和1.51%,Ⅱ阶段上升至9.41%,Ⅲ阶段降至4.29%.Ⅰ阶段的厌氧区对该菌的生长具有抑制作用,但Ⅱ阶段的缺氧区却刺激其优势生长.同时对比了3个系统中微生物种群多样性,Ⅰ阶段最高,其次为Ⅱ、Ⅲ阶段.缺氧区和厌氧区的引入导致系统功能与环境的复杂度增加,微生物群落多样性有所升高.胞外聚合物(extracellular polymeric substances,EPS)中各组分含量及三维荧光测定结果表明,微生物群落结构变化对EPS的组分及含量具有显著影响,进而导致污泥沉降性能改善或恶化的进程加剧,污泥沉降性能与松散附着胞外聚合物(loosely bound EPS,LB-EPS)中蛋白质/多糖的比值呈正相关.
|
| 关 键 词： | 生物处理 污泥沉降性能 菌群结构 胞外聚合物 荧光特性 |
| 收稿时间： | 2018/1/28 0:00:00 |
| 修稿时间： | 2018/3/26 0:00:00 |
Effect of Microbial Community Structure and Metabolites on Sludge Settling Ability Under Three Different Switching Condition Processes |
| |
| WEN Dan-dan,YUAN Lin-jiang,CHEN Xi,WANG Yang,SHEN Tong-tong and LIU Xiao-bo.Effect of Microbial Community Structure and Metabolites on Sludge Settling Ability Under Three Different Switching Condition Processes[J].Chinese Journal of Environmental Science,2018,39(10):4644-4652. |
| |
| Authors: | WEN Dan-dan YUAN Lin-jiang CHEN Xi WANG Yang SHEN Tong-tong and LIU Xiao-bo |
| |
| Institution: | Key Laboratory of Environmental Engineering, Shaanxi Province, Key Laboratory of Northwest Water Resources, Environmental and Ecology, Ministry of Education, Xi''an University of Architecture and Technology, Xi''an 710055, China,Key Laboratory of Environmental Engineering, Shaanxi Province, Key Laboratory of Northwest Water Resources, Environmental and Ecology, Ministry of Education, Xi''an University of Architecture and Technology, Xi''an 710055, China,School of Environmental & Chemical Engineering, Xi''an Polytechnic University, Xi''an 710048, China,Key Laboratory of Environmental Engineering, Shaanxi Province, Key Laboratory of Northwest Water Resources, Environmental and Ecology, Ministry of Education, Xi''an University of Architecture and Technology, Xi''an 710055, China,Key Laboratory of Environmental Engineering, Shaanxi Province, Key Laboratory of Northwest Water Resources, Environmental and Ecology, Ministry of Education, Xi''an University of Architecture and Technology, Xi''an 710055, China and Key Laboratory of Environmental Engineering, Shaanxi Province, Key Laboratory of Northwest Water Resources, Environmental and Ecology, Ministry of Education, Xi''an University of Architecture and Technology, Xi''an 710055, China |
| |
| Abstract: | |
| |
| Keywords: | biological treatment sludge settleability microbial community structure extracellular polymeric substances fluorescence characteristics |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《环境科学》浏览原始摘要信息 |
| 点击此处可从《环境科学》下载免费的PDF全文 |
|
