好氧污泥-微藻耦合颗粒的培养及特性研究  

Research on the development and properties of aerobic sludge-microalgae granular system

作　　者：刘琳[1,2] 叶嘉琦 刘玉洪[1,2] 黄栩[1] 刘超翔[1] LIU Lin;YE Jia-qi;LIU Yu-hong;HUANG Xu;LIU Chao-xiang(Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China;University of Chinese Academy of Sciences, Beijing 100049, China)

机构地区：[1]中国科学院城市环境研究所,中国科学院城市污染物转化重点实验室,福建厦门361021 [2]中国科学院大学,北京100049

出　　处：《中国环境科学》2017年第7期2536-2541,共6页China Environmental Science

基　　金：国家自然科学基金资助项目(51308523);厦门市科技计划项目(3502Z20162001);厦门理工学院创新项目(201611062288)

摘　　要：研究以好氧颗粒污泥为生物载体、小球藻与栅藻为接种微藻,开展了菌藻耦合颗粒化系统构建与解析工作,并考察了选择压关键因子—沉降时间的作用影响.研究结果指出好氧污泥与微藻可形成稳定的耦合颗粒体,沉降时间会影响耦合进度,但其并非耦合实现的决定性因素.在稳态颗粒性质方面,沉降时间差异设定会显著影响耦合颗粒的沉降性能、氮素去除能力、粒径大小及生物柴油产量(P<0.05),但耦合颗粒的微生物表面电荷、关键脂肪酸甲酯组分及磷素去除能力对其作用响应并不显著(P>0.05).蓝藻和真核藻类在颗粒中所占比例约为5%和95%,接种微藻在真核藻类群落中可保持主导地位(相对丰度>98%),但不同沉降时间处置下小球藻和栅藻在颗粒体中相对优势性具有明显区别.The effect of settling time on the development and properties of algae-bacteria granular consortia,which were cultivated with aerobic granules as biological carrier,and Chlorella and Scenedesmus as seed microalgae,were investigated in this research.The results indicated that the algae-bacteria granular consortia could be successfully developed based on the aerobic granules and targeted microalgae.Although settling time could affect the start-up duration of granular system,it was not the crucial factor for the culture of granular consortia.In terms of properties of the mature granular consortia,the settling time could significantly affect the settleability,nitrogen removal ability,granular size and biodiesel yield of the consortia granules(P<0.05),while the obvious response of zeta potential,phosphate removal rate and the dominate compositions of fatty acid methyl esters in the biodiesel to the settling time was not observed in this experiment(P>0.05).The relative abundance of cyanobacteria and eukaryotic algae in all granules were about5%and95%,respectively.The targeted microalgae maintained dominance in the eukaryotic algal community(relative abundance>98%),and the comparative advantage of biomass between Chlorella and Scenedesmus in the granules was showed under the different condition of settling time in systems.

关 键 词：废水处理 生物质能源 菌藻共生 颗粒污泥 沉降时间 

分 类 号：X703.1[环境科学与工程—环境工程]