摘要
采用内电解、沉水植物和微生物耦合的方法进行城市黑臭水体生态修复研究,考察了耦合体系对城市黑臭水体的净化效能,并对苦草根际微生物群落结构的演变进行了分析。微生物分析结果显示:有自养反硝化和聚磷作用的微生物Pseudomonas是苦草根际的主要微生物,在苦草根际始终保持很高的丰度;具有自养反硝化作用的Hydrogenophaga随着试验的进行也逐渐在苦草根际富集;具有反硝化作用的微生物Delftia、norank_f_Rhizobiales_Incertae_Sedis和unclassified_f_Comamonadaceae随着试验的进行逐渐在苦草根际富集并成为优势菌。Hyphomicrobium、unclassified_f_Xanthobacteraceae和SM1A02是具有机物降解与反硝化功能的菌属,其在苦草根际出现并逐渐富集。苦草根际微生物群落结构的演变表明耦合体系具有较强的自养反硝化能力,且具有脱氮除磷及有机物降解能力的微生物的丰富度和多样性逐渐增强。
The ecological restoration of urban black and odorous water was carried out using a triple coupling system of internal electrolysis,submerged macrophyte,and microbes.The purification efficiency of the coupling system on black and odorous water was investigated,and the evolution of the microbial community structure in the rhizosphere of Vallisneria natans was analyzed.The microbial analysis results showed that Pseudomonas,a microorganism with autotrophic denitrification and polyphosphate accumulation ability,was the main microorganism in the rhizosphere of Vallisneria natans,and maintained a high abundance.In addition,Hydrogenophaga with autotrophic denitrification ability,gradually enriched in the rhizosphere of Vallisneria natans as the experiment progressed.Microorganisms with denitrification such as Delftia,norank_f__Rhizobiales_Incertae_Sedis and unclassified_f__Comamonadaceae gradually accumulated and became dominant in the rhizosphere of Vallisneria natans.Hyphomicrobium,unclassified_f__Xanthobacteraceae and SM1A02 with organic degradation and denitrification functions,appeared and gradually accumulated in the rhizosphere of Vallisneria natans.The evolution of the microbial community in the rhizosphere of Vallisneria natans indicated that the coupling system had strong autotrophic denitrification ability,and the richness and diversity of microorganisms with nitrogen and phosphorus removal and organic matter degradation abilities were gradually increased.
作者
刘岚昕
李娜
王赫
LIU Lanxin;LI Na;WANG He(Liaoning Science and Technology Center for Ecological and Environmental Protection,Shenyang 110161,China;School of Environmental Science and Technology,Dalian University of Technology,Dalian 116023,China;Experimental Center,Shenyang Normal University,Shenyang 110034,China)
出处
《环境保护科学》
2025年第1期139-144,共6页
Environmental Protection Science
基金
辽宁省科技重大专项(2019JH1/10300001)
辽宁省自然科学基金项目(2022-MS-308)。
关键词
内电解
黑臭水体
生态修复
微生物
苦草
internal electrolysis
black-odorous water
ecological restoration
microbe
Vallisneria natans
