Method For Total Emission Control Of Atmospheric Pollutant And Case Study

Total emission control of atmospheric pollutant is to control air pollution from an integrated viewpoint, and it is an effective way for improving the quality of regional atmospheric environment. To this pollution control method, two parts of content are typical. One is how to determine the total allowable emission of pollutant, the other is how to share the allowable emission in all the pollution sources. The two points form the foundation of all kinds of methods prevalent today for total emission control of atmospheric pollutant. Although previous methods have made much effect in practice, they are not to be perfect. Because of the complexity of the atmospheric system, no method for total emission control of atmospheric pollutant which is most universal, reliable, and feasible appears to be used in environmental protection yet. So, it's necessary to do deeper research on the method of total emission control of atmospheric pollutant.Discussing the essence of the method for total emission control of atmospheric pollutant, analyzing the advantage and disadvantage of the methods which are widely used currently, making improvement according to the shortcomings of these methods, introducing new practical techniques and tools, and finally presenting a new method which is more reasonable and feasible are of great significance. And they are also the objectives of our research.According to the analysis of a great deal of literature, a review of the methods used widely in our country for the control of total emission of atmospheric pollutant is made. And a new way to make a plan for total emission control of atmospheric pollutant is presented in which the process of the control is divided into three steps. In the first step, an improved A-P Value method is used whose results are more accurate compared with the A-P Value method by including the contents of dry deposition, wet deposition, and chemical transforming. In the second step, according to the concentration contribution of every pollution source to the controllable points, each source is allocated allowable emission amount. By doing so, each source's responsibility to maintain regional atmospheric quality is determined. In the third step, the control plan drawn in the former step is adjusted to the actual condition. Optimal model is created with Discrete Programming method, and the optimal solution is obtained with the method of Steepest Descent. The objective is to make the control plan not only theoretic best but also nearlyconsistent with the fact.To show the effect of the method presented in the paper, a case analysis was done to display the process of making a total emission control plan. Good results were obtained as expected. And the programming based on the method of Steepest Descent showed excellent ability and good speed to obtain the optimal solution. As a new technique introduced in the paper, it proved to be exercisable.For the time limited, the practical effect of the method presented in the paper is still expected to be proved.