Study On The Allocation Of Industrial Initial Pollutant Emission Permits Based On Bidirectional-coupling Optimization Model

With the rapid development of the economy,the contradiction between the economic construction and the ecological environment is increasingly prominent.And the problems?such as resource shortage and many environmental pollution phenomena?not only leads to the continuous deterioration of the environmental quality,but also leads to the serious damage to the ecological function.How to coordinate the relationship between economic development and environmental protection with the achievement of sustainable development of human society has become an important issue that the governments of all countries need to solve urgently.Total emission control of pollutants is a powerful combination of economic development and environmental protection.However,statistics in recent years have shown that China's total pollutant control and environmental quality improvement lack of synchronization.Therefore,how to achieve the goal of total emission control,promote the industrial restructuring and technological progress,and thus to improve the environmental quality,is a key problem to be solved urgently.The allocation of pollutant emission permits is the premise and foundation for the implementation of the total emission control system,and also the decisive step for the total emission control.As a key link connecting the preceding and the following in the"Region-Industry-Enterprise"allocation system,the allocation of pollutant emission permits at the industry level can be differentiated to the industries which will be encouraged or restricted to develop based on the industrial differences,so as to promote the adjustment of industrial structure and effectively improve environmental quality.Based on above,the theory of total emission control,shadow price and resource scarcity are studied in this paper.First of all,the paper summarizes the current domestic and international methods of initial pollutant emission permits allocation among industries.Secondly,based on the principle of fairness and efficiency of allocation,the bidirectional-coupling optimization model of initial pollutant emission permits allocation at industrial level is established based on the forward optimization method and the reverse optimization method.Then,based on the analytic hierarchy process?AHP?,the comprehensive benefit evaluation model of the pollutant emission permits allocation method at industrial level is constructed by selecting indexes from the three levels of environmental benefit,economic benefit and industrial benefit.Finally,taking Jilin Province as an example,scientific allocation of the initial pollutant emission permits was conducted among industries with high SO₂ emission.And through scenario setting,comparative analysis of different scenarios in the allocation method,the highest comprehensive benefit of the allocation scheme can be selected.The results show that the estimated total SO₂ emissions of the eight SO₂high-emission industries in Jilin Province are 192,400 tons and the total industrial output value is 1272.907 billion yuan.Among all industries,only manufacture of non-metallic mineral products and processing of agricultural products obtained more emission quotas in the target year than in the base year,so the economic development of these two industries will be encouraged;Significant reductions in the emission quotas allocated to production and supply of electricity,heat and fuel gas,smelting and pressing of ferrous metal,and manufacture of chemical products in the target year compared with base year indicates that the development of these industries will be strictly restricted during the planning period;The rest of the industries with its relatively low historical emissions,their emission quotas will not change much in the process of industrial restructuring.Among five scenarios,the scenario where bidirectional-coupling optimization allocation model was applied won the highest score of comprehensive benefit evaluation.And its industrial benefit evaluation also gained the highest scores,which shows that this method not only can coordinate environmental protection and economic development,but also can effectively promote the adjustment of industrial structure,thus to achieve the maximum regional comprehensive benefit.Therefore,the bidirectional-coupling optimization model for pollutant emission permits allocation can provide useful references for allocation pattern of pollutant emission permits at industrial level,and provide theoretical and data support for relevant decision making.