CHENHaolin,WANGRen,ANDong,et al.Analysis of Carbon Emissions and Optimization Approaches of Multi-mode A/O+MBR Process[J].China Water & Wastewater,2026,42(12):58-63.
多模式A/O+MBR工艺的碳排放及优化途径分析
- Title:
- Analysis of Carbon Emissions and Optimization Approaches of Multi-mode A/O+MBR Process
- 摘要:
- 在“双碳”目标背景下,如何在现行污水处理工艺运行条件下实现碳减排对污水处理低碳运行提出了新要求与新使命。以我国北方某3万m3/d处理规模的MBR工艺地下式污水处理厂为例进行碳排放分析,综合污水处理效率、能耗成本核算出该污水处理厂的碳排放强度为1.45 kgCO2/m3,直接碳排放量约占全厂碳排放总量的20%,间接碳排放量占全厂碳排放总量的80%;在间接碳排方面,电耗的碳排放量占比最高,占总碳排放量的53.93%;药耗的碳排放量占总碳排放量的26.17%。减碳降碳措施方面,在水质达标排放的前提下,以持续优化工艺和设备运行策略为着力点,采用搅拌器间歇运行、除臭分浓度梯度收集等方式,该污水处理厂减碳量约6 293 kgCO2/d。
- Abstract:
- Under the “dual-carbon” background, how to achieve carbon reduction under the current operation conditions of sewage treatment processes has put forward new requirements and new missions for the low-carbon operation of sewage treatment. This paper conducts a carbon emission analysis on an underground MBR process sewage treatment plant with a treatment capacity of 30 000 m3/d in North China. Based on the comprehensive sewage treatment efficiency and energy consumption cost, it is calculated that the daily carbon emission intensity of this sewage treatment plant is 1.45 kgCO2/m3. Direct carbon emissions account for approximately 20% of the total carbon emissions of the entire plant, and indirect carbon emissions account for 80% of the total carbon emissions of the entire plant. In terms of indrect carbon emissions, the carbon emissions from electricity consumption account for the highest proportion, accounting for 53.93% of the total carbon emissions. The carbon emissions from chemical agents consumption account for 26.17% of the total carbon emissions. In terms of carbon reduction measures, under the premise of meeting the water quality discharge standards, the focus is on continuously optimizing the process and equipment operation strategies. Methods such as intermittent operation of agitators and gradient collection of deodorization concentrations are adopted to achieve a carbon reduction of approximately 6 293 kgCO2/d for this underground sewage treatment plant.
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