净水技术2025，Vol.44Issue(6)：182-187,195,7.DOI:10.15890/j.cnki.jsjs.2025.06.022
多段多级AO工艺碳排放分析及设计优化探讨
Analysis of Carbon Emission and Optimized Design of Multi-Stage and Multi-Level AO Process
李学瑞 1贾建伟 1康鹏亮 1武占飞 2商潘路1
作者信息
- 1. 中国市政工程西北设计研究院有限公司,甘肃兰州 730000
- 2. 榆林市第三污水厂筹建处,陕西榆林 719300
- 折叠
摘要
Abstract
[Objective]Under the background of pollution reduction and carbon emission reduction,in order to fully tap the treatment potential of the multi-stage and multi-level anoxic/oxic(AO)process and achieve the goals of energy conservation,consumption reduction and carbon emission reduction in wastewater treatment plants(WWTPs),the low-carbon design optimization strategy of the process is explored.[Methods]Combined with the analysis of carbon emissions,the multi-stage and multi-level AO process of a case WWTP is studied.From the perspectives of low-carbon emission reduction operation and efficiency improvement,the design optimization strategies of aspects such as the aeration system,influent flow distribution,water distribution mode,and tank structure are analyzed and discussed.[Results]The carbon emission intensity of the multi-stage and multi-level AO process section of the case WWTP is 0.39 kg CO2-eq/m3,accounting for 55.84％of the total carbon emissions of the wastewater treatment in the whole WWTP.The aeration system in the aerobic zone should preferably adopt a gradually decreasing layout,and a degassing deformation zone should be set up.An appropriate multi-point influent distribution control mode should be selected,the influent flow distribution should be optimized,and attention should be paid to the selection of the tank type,propellers,mixers,and the opening method of the connecting holes in each area to ensure a good flow pattern in the biological tank.By applying the precise aeration system and precise carbon source dosing control system,the carbon emission intensity of this process can be reduced to 0.35 kg CO2-eq/m3,and a total carbon emission reduction of 10.3％can be achieved.[Conclusion]The above design optimization suggestions can effectively reduce the carbon emission intensity of the multi-stage and multi-level AO process,which is of great significance for the low-carbon operation of WWTPs.It can provide references for the design of similar projects,help WWTPs better connect with production operations,and achieve the goals of energy conservation and carbon emission reduction.关键词
多段多级AO工艺/碳排放分析/曝气及加药控制/配水方式/池型与搅拌Key words
multi-stage and multi-level AO process/carbon emission analysis/aeration and dosing control/water distribution mode/pool type and stirring分类
建筑与水利引用本文复制引用
李学瑞,贾建伟,康鹏亮,武占飞,商潘路..多段多级AO工艺碳排放分析及设计优化探讨[J].净水技术,2025,44(6):182-187,195,7.
