污泥产短链脂肪酸微生物的研究进展

RESEARCH PROGRESS OF MICROORGANISMS RELATED TO SHORT-CHAIN FATTY ACIDS PRODUCTION FROM SLUDGE

厌氧消化系统微生物是生物降解有机物工艺的核心。系统综述了厌氧消化产短链脂肪酸的微生物种类及其种类间的代谢关系,重点阐述了污泥中基质、温度、p H值、碳氮比和污泥停留时间等因素对污泥厌氧消化产短链脂肪酸微生物的生物多样性、优势种群及产物的影响,介绍了促进污泥厌氧发酵产短链脂肪酸微生物活性的研究进展,展望了通过调控主要影响因素实现对厌氧消化系统微生物优势种群的控制。

Microorganism plays an important role on all bio-degradation processes of organic matters. The paper illustrated the microbial species related to the generation of short-chain fatty acids( SCFAs) during the anaerobic digestion( AD) process and the relationship among these different microbes systematically,and discussed the influences of impact factors,i. e.,sludge substrate,temperature,p H,carbon to nitrogen ratio and sludge retention time,on the biodiversity of acid-producing microbes,predominant microbial species and the production of the microorganisms. Meanwhile,the studies on the evolution of the different strategies to enhance the microbial activities of SCFA generation were introduced. Finally,in order to select the dominant microbial species related to SCFA generation during the sludge anaerobic digestion process,different strategies to regulate the impact factors were also investigated.