城镇污水治理与温室气体的协同减排双控研究

Study on the Dual Control of Urban Sewage Treatment&Greenhouse Gas Collaborative Emission Reduction

截至2020年,全国城镇集中式的污水处理率(污泥处置率)均达到90%以上,污水处理量得到稳步增长。能/药耗规模是污水处理厂经营成本控制的重头,2项费用占比超过50%。针对污水处理厂的减污降碳、节能降耗的协同增效,需要全周期(流程)的系统分析与精细化调控。针对温室气体碳排放,建立基于“碳排放量”与“碳排放强度”双控指标的量化评估体系,且COD(TN)污染物、能耗、药耗为污水处理厂碳排放的主要关联因子。以实际污水处理厂的活动数据进行碳排放指标测算与横向类比,碳排放强度在0.54~1.11 kg CO_(2)/m^(3),其中来自电耗、药耗的碳排放量贡献权重各为31%~64%、12%~29%。

By 2020,the centralized sewage treatment rate(sludge treatment rate)in cities&towns across the country has reached more than 90%,and the sewage treatment capacity has been steadily increased.The scale of energy/drug consumption is the important part of the operation cost control of the sewage treatment plant,and the proportion of two expenses exceeds 50%.For the synergy of sewage treatment plant in terms of pollution reduction&carbon reduction,energy conservation&consumption reduction,full-cycle(process)system analysis&fine regulation are required.For greenhouse gas carbon emissions,a quantitative assessment system based on the dual control indicators of carbon emissions&carbon emissions intensity is established,and COD(TN)pollutants,energy consumption&drug consumption are the main correlation factors of carbon emissions of the sewage treatment plant.Based on the activity data of the actual sewage treatment plant,the carbon emission index is calculated&compared horizontally.The carbon emission intensity is 0.54~1.11 kg CO_(2)/m^(3),in which the contribution weights of carbon emissions from power consumption&drug consumption are 31%~64%and 12%~29%respectively.