Optimization of emission reduction measures and assessment of emission reduction potential for Changzhou city
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Abstract:
In order to control the tot al amount of non-point source pollution, it is necessary to make a reasonable assessment of the potential of emission reduction. The quantification of emission reduction potential is based on the optimization of emission reduction measures and the development of a feasible emission reduction plan with consideration to both environmental benefits and economic cost. In this study , we took Changzhou City as an example to analyze the emission reduction potential of non-point source pollution. Weco nducted multi-objective optimization of the emission reduction schemes by using the analytic hierarchy process (AHP) , which can carry out quantitative and qualitative analysis at the same time. With the technical feasibility, economic rationality and operability as guidelines, we took total nitrogen reduction rate, total phsphorus reduction rate, ammonia reduction rate, COD reduction rate as environmental indexes, and construction costs and operating costs as economic indexes. We selected alternative emission reduction measures from the demonstration projects and pilot projects in Changzhou and its surrounding areas to ensure their operability . With 2014 as the base year, we estimated the total amount of non-point source pollution in Changzhou using the pollution coefficient method and calculated the reductions according to the optimization measures, and thus we analyzed the emission reduction potential of each pollutant index . We put forward a list of emission reduction measures suitable for non-point source pollution in Changzhou, and used the analytic hierarchy process to optimize the emission reduction measures, and determined the emission reduction potential of non-point source pollution in Changzhou in 2014 with consideration to both environmental benefits and economic costs.
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