典型浅水湖泊白洋淀高氨氮沉积物生物炭原位修复研究 | |
Alternative Title | Study on in S itu R emediation of B iochar in High A mmonia N itrogen Content Sediments of Typical S hallow L ake Baiyangdian Lake |
朱曜曜![]() | |
Subtype | 博士 |
Thesis Advisor | 单保庆 |
2019-12 | |
Degree Grantor | 中国科学院生态环境研究中心 |
Place of Conferral | 北京 |
Degree Name | 工学博士 |
Degree Discipline | 环境工程 |
Keyword | 白洋淀 生物炭,沉积物,氨氮,修复技术 b Aiyangdian Lake , b Iochar, Sediment, Ammonia Nitrogen, Re Mediation Technology |
Abstract | 流域内水体外源输入得到有效控制后,内源会成为主要的污染输入源,威胁上覆水环境质量。白洋淀作为我国“华北之肾”,沉积物污染,尤其是氨氮 NH 4N 含量高 是现阶段面临的重要问题之一。 亟需在充分认识白洋淀沉积物 NH 4N 污染特征的基础上 开展 高 NH 4 N 沉积物原位 修复 工作,进而提升流域水环境质量 。 目前,针对沉积物 NH 4 N 污染的原位修复材料和技术并不成熟,生物炭作为一种绿色环保的沉积物修复材料具有较好应用前景。 故 本文以 探究生物炭原位覆盖技术对高 NH 4 N 沉积物的修复效果及其关键机理 ”为科学问题 以“问题导向 技术研发 效果验证 机理探索” 为 研究主线 开展相关研究并得到以下主要研究成果: |
Other Abstract | After external inputs of water in the basin is effectively controlled, the endogenous pollution will become the main source of pollution input, threatening the quality of the overlying water environment. In Baiyangdian Lake BYDL )), as “kidney of North China” s ediment pollutio n, especially ammonia nitrogen NH 4 N pollution, wa s one of the important problems at this stage. Thus , it wa s urgent to fully understand the characteristics of NH 4 N pollution in BYDL sediments and to develop in situ control technology for the ecological re mediation of NH 4 N contaminated sediments thereby improving the water environment quality of the basin. At present, in situ re mediation materials and technologies for NH 4 N pollut ed sediment are not mature, and biochar has a good application prospect as a green environmentally friendly sediment remediation material. This paper t ook Investigate the effect of biochar in situ c apping technology on high NH 4 N sediments and its key mechanism as the scientific problem and "problem oriented , technology research and development , effectiveness verification , mechanism exploration" as the main line The main research results were as follows: (5) BC capping c ould change the microbial community structure related to the nitrogen cycle and the abundance of related functional genes involved in the NH 4 N cycle Microbial community structure and functional gene analysis after BC capping The introduction of BC c ould increase the r elative abundance of several microbial p hylum related to nitroge n cycle , Proteobacteria Planctomycetes and Nitrospirae ; increase the r elative abundance of microbial species associated with NH 4 N removal , Nitrospira , Thiobacillus , Comamonadaceae , Desulfobulbus ,Hydrogenophaga . T he abundances of amoA, amoB, nrfA, nirK, nirS, ureC and hzsB in the BC layer were greatly increased. The ratio of the copy number of the amoB, nirS and ureC genes to that of 16s increase d. It indicate d that BC not only increase d the microbial biomass assoc iated with nitrogen cycle, but also enhance d the r elative abundance of amoB, nirS and ureC genes. |
Pages | 212 |
Language | 中文 |
Document Type | 学位论文 |
Identifier | http://ir.rcees.ac.cn/handle/311016/42368 |
Collection | 环境水质学国家重点实验室 |
Recommended Citation GB/T 7714 | 朱曜曜. 典型浅水湖泊白洋淀高氨氮沉积物生物炭原位修复研究[D]. 北京. 中国科学院生态环境研究中心,2019. |
Files in This Item: | ||||||
File Name/Size | DocType | Version | Access | License | ||
朱曜曜-典型浅水湖泊 白洋淀高氨氮沉积物(9917KB) | 学位论文 | 开放获取 | CC BY-NC-SA | Application Full Text |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment