环境工程学报2025，Vol.19Issue(2)：281-290,10.DOI:10.12030/j.cjee.202407115
微生物作用下生态丁坝和深潭浅滩组合对氨氮的净化效果
Purification effect of ammonia nitrogen by ecological groin and deep pool shoals combination under the action of microorganisms
摘要
Abstract
The installation of ecological groin and deep pool shoals is a prevalent practice in river regulation and protection engineering.Nevertheless,prevailing research primarily focuses on the material composition of ecological groin and the impact of deep pool shoals on river habitats,the purification mechanism of ammonia nitrogen in rivers using ecological groin and deep pool shoals under the action of microorganisms has received slight attention.Thus,the ecological alternate groin and deep pool shoals on varying sides was combined to assess their capacity for purifying ammonia nitrogen with the water tank modeling experimental method,and the microbial diversity in them was analyzed.The results showed that the order of the total removal rate of ammonia nitrogen in rivers,as well as the order of the purification effect of ammonia nitrogen,was ecological groin＞shoal＞deep pool.The order of the surface ammonia nitrogen nitrification rate for this combination was ecological groin＞shoal＞deep pool,while the order of the potential nitrification rate was groin＞deep pool＞shoal.The OTU counts in various sediment samples presented the following order:ecological groin＞deep pool＞shoal,whereas the bacterial community richness presented the following order:groin＞deep pool＞shoal.Compared with that in deep pools and shoals,a notable contrast occurred in the microbial community composition of ecological groin.Besides the dominated bacterial community of Cyanobacteria and Proteobacteria at phylum levle,Cloroflexi and Actinomyces were also dominated ones.The findings indicated that the microbial community at the bottom of the ecological groin and the deep pool significantly contributed to the purification of ammonia nitrogen in the river.Furthermore,the difference in microbial composition and abundance is a key factor affecting the the nitrification rates and purification efficiency among the shoal,groin and deep pool.关键词
生态丁坝/深潭浅滩/氨氮净化/硝化速率/微生物多样性Key words
ecological groin/deep pool shoal/ammonia nitrogen purification/nitrification rate/microbial diversity分类
环境科学引用本文复制引用
王禹来,杨威,原先凡,王启航,陈一天..微生物作用下生态丁坝和深潭浅滩组合对氨氮的净化效果[J].环境工程学报,2025,19(2):281-290,10.基金项目
城市黑臭水体综合治理及水质演替模拟研究(PA8821) （PA8821）
