Assessment method and application of carbon reduction potential in municipal wastewater treatment plants
The assessment of carbon reduction potential is the foundation for achieving carbon neutrality in municipal wastewater treatment plants(WWTPs).This study constructed a carbon reduction technology database consisting of 46 technologies in 4 categories.Based on the analytic hierarchy process and questionnaire survey,a carbon reduction potential evaluation index system was established to evaluate the feasibility of carbon reduction technologies,aiming to serving as a reference for the study of carbon neutrality pathways in WWTPs.The proportions of potential applications for operation management,resource recycling,process selection,and clean energy technologies were 62.5％,62.5％,50.0％,and 30.0％,respectively.Among them,the most feasible carbon reduction technologies at present were dosing pump frequency conversion control technology,pump frequency conversion control technology,and energy efficiency management system for key equipment.Taking 27 WWTPs of a local water group as a case study,based on the evaluation results of carbon reduction potential,they were classified from high to low into carbon neutrality potential type,energy dependent type,and traditional tapping potential type.The proportions of the above three types of WWTPs were 3.7％,63.0％,and 33.3％.In additions,corresponding feasible technical suggestions for carbon reduction were provided.
wastewater treatment plantcarbon reduction potentialfeasibility assessmentindicator system
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