摘要
黄水作为白酒生产过程中的副产物,含有大量易于生物降解的有机物。对比研究了黄水和传统碳源(乙醇、乙酸钠)为外碳源时的反硝化效果,并通过16S rRNA分析了不同碳源系统微生物种群结构。结果表明,黄水系统的反硝化速率为6.49 mg/(g·h),反硝化脱氮效果与传统碳源相差不大。反硝化过程中各碳源系统亚硝酸盐氮均出现短暂积累,黄水系统最大亚硝酸盐氮积累率最低。碳源对系统微生物种群结构有一定影响,乙酸钠系统中微生物种群的丰富度有所上升。相比于乙酸钠系统,黄水和乙醇系统在门水平上的种群分布具有较高的相似性,两个系统中变形菌门(Proteobacteria)均有一定程度的提升,厚壁菌门(Firmicutes)均明显下降;乙酸钠系统则与之相反。
Yellow water,as a by-product in the production of Baijiu,contained a large number of easily biodegradable organic substances.The denitrification effects of yellow water and traditional carbon sources(ethanol,sodium acetate)as external carbon sources were compared,and the microbial population structures of different carbon source systems were analyzed by 16S rRNA.The results showed that the denitrification rate of yellow water system was 6.49 mg/(g·h),which was not much different from the traditional carbon sources.In denitrification process of all carbon source systems,nitrite nitrogen accumulated briefly,and the maximum nitrite nitrogen accumulation rate in the yellow water system was the lowest.The carbon source had a certain impact on the microbial population structure of the system.The richness of microbial population in the sodium acetate system had increased.Compared with sodium acetate system,the population distribution of yellow water and ethanol system at the phylum level had high similarity.Proteobacteria had increased to a certain extent in the two systems,and Firmicutes had decreased significantly,while sodium acetate system was the opposite.
作者
袁芳
郭盛楠
蒲一凡
徐伟
鞠佳伟
YUAN Fang;GUO Shengnan;PU Yifan;XU Wei;JU Jiawei(General Water of China Co.,Ltd.,Beijing 100022;Research Institute for Environmental Innovation(Suzhou)Tsinghua,Suzhou Jiangsu 215000;Bengbu Zhonghuan Sewage Treatment Co.,Ltd.,Bengbu Anhui 233000)
出处
《环境污染与防治》
CAS
CSCD
北大核心
2023年第4期516-520,共5页
Environmental Pollution & Control
基金
中国节能环保集团有限公司重大科技创新项目(No.cecep-zdkj-2019-010)。
关键词
黄水资源化
碳源
反硝化
生物种群结构
resource recovery from yellow water
carbon source
denitrification
microbial population structure
作者简介
第一作者:袁芳,女,1981年生,博士,高级工程师,研究方向为污水处理与过程控制。
