Performance of autotrophic/heterotrophic biological nitrogen removal process based on organic energy conversion

被引：0

作者：

Li, Wei ^{[1
]}

Li, Xiang ^{[1
,2
,3
]}

Yuan, Yan ^{[1
]}

Huang, Yong ^{[1
,2
]}

Feng, Zhen ^{[4
]}

Li, Peng-Fei ^{[4
]}

机构：

[1] School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou,215009, China

[2] Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou,215009, China

[3] Suzhou Tianjun Environmental Technology Co., LTD., Suzhou,215000, China

[4] Suzhou Keride Energy Conservation and Environmental Technology Co., Ltd, Suzhou,215011, China

来源：

Zhongguo Huanjing Kexue/China Environmental Science | 2024年 / 44卷 / 11期

关键词：

Alkanolamines - Bioremediation - Denitrification - Effluent treatment - Effluents - Gas chromatography - Internal oxidation - Nitriding - Nitrification - Nitrogen removal - System-on-chip - Wastewater treatment;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

In order to solve the problems of low energy recovery rate and high energy consumption of traditional nitrification and denitrification in the treatment of high organic carbon and high ammonia wastewater by the anaerobic internal circulation reactor (IC)-anaerobic aerobic process (AO). Based on partial nitrification/anaerobic ammonia oxidation (PN/A), and IC high-efficiency methanation, complete autotrophic nitrogen removal process (CANON) to treat this kind of wastewater was designed, and the operating characteristics of IC-CANON in the energy recovery and nitrogen removal process were discussed, and the differences between IC-CANON and traditional IC-AO energy recovery, nitrogen removal stability and energy consumption level were evaluated. The results showed that when the C/N of IC effluent was 0.5~1, the nitrogen removal rate (NRR) of the CANON process reached the highest of 0.24kg/(m3·d), the nitrogen removal efficiency (NRE) was (76.2±5)%, and the minimum nitrogen removal contribution rate of Anammox was more than 70%. When influent C/N was 1.9~4, the NRR of first AO reached the highest of 0.14kg/(m3·d), and the NRE was (89.6±0.9)%. When the nitrogen load rate (NLR) of influent fluctuated at 0.22~0.32kg/(m3·d), the minimum contribution rates of CANON process NRE and Anammox remained above 70% and 65%, respectively. When the influent C/N increased to 2.2, the activity of Anammox in CANON was inhibited, and the NRE decreased from 76% to 45.4%. CANON had a strong resistance to NLR impact, but a poor resistance to organic load impact. Under the fluctuations of C/N and NLR of 0.6~6.6kg/(m3·d) and 0.06~0.16kg/(m3·d), the NRE of the first AO remained at about 90%, compared with Canon, the AO process had well resistance to NLR and organic load impact at the same time. When the NRR of the CANON process reached more than 0.21kg/(m3·d), the energy consumption of nitrogen removal is 3.5~3.6kWh/kgN, which can save (77.8±1.8)% compared with the AO process under the same influent and effluent, and the IC energy recovery rate increased from 62.1% to 89.2%. © 2024 Chinese Society for Environmental Sciences. All rights reserved.

引用

页码：6068 / 6076