期刊
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
卷 156, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.psep.2021.10.004
关键词
Distribution of dissolved oxygen; Functional zones; Micro-pressure double-cycle reactor; Nitrogen removal; PICRUSt2; Simultaneous nitrification and denitrification
资金
- National Natural Science Foundation of China [51878067]
- Department of Science and Technology of Jilin Province [20190303091SF]
- Education Department of Jilin Province [JJKH20210684KJ]
The study emphasized the excellent denitrification performance of the Micro-pressure double-cycle reactor in treating municipal wastewater. By analyzing the structure and microbial activity, it was found that the reactor provides a macroscopic biochemical reaction environment for simultaneous nitrification and denitrification.
To explore the reasons for the excellent denitrification performance of the Micro-pressure double-cycle reactor (MPDR), the nitrogen removal mechanism of the reactor in the treatment of municipal wastewater was studied. Through analysis of flow simulation and dissolved oxygen (DO) distribution, it was determined that the reactor had a macroscopic biochemical reaction environment for simultaneous nitrification and denitrification (SND) because of the special structure of reactor. The result of sewage treatment showed that the average removal rates of COD, NH4+-N, TN, TP were 92.29%, 96.64%, 73.6% and 91.66% respectively, and the SND rate was 60.9%. Dechloromonas, Thermomonas, Micropruina, Tetrasphaera, etc. for nitrogen and phosphorus removal existed in the reactor at the same time to explain the excellent performance of the system. PICRUSt2 showed that the metabolic pathways related to nutrient degradation in the reactor were highly active and the abundance of denitrification functional genes was higher in the central zone and lower in the peripheral zone. The research results not only perfected the basic theory of the reactor, but more importantly, provided theoretical and technical support for the further application of the reactor. (C) 2021 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据