Industrial Sources Analysis Of COD And Nh₃-N For Reduction In China From 2006 Through 2015

Recently,China’s overall industrial production ranks first in the world.However,this "China Miracle" comes at the expense of resources and environment.Compared with the advanced countries,China’s industrial production is still too extensive and the proportion of "Two-high and one-low" mode industries is still too high.To build "Two-oriented society",push economic restructuring and transform the economic growth,we must advocate energy saving and emission reduction.The 13th Five-Year is a critical period for containing total pollution emission,achieving total emission reduction and improving environmental quality.However,our task is tough as current industrial pollution emission is still beyond environment bearing capacity.In order to fulfill the task of emission reduction on schedule with quality and quantity,it is necessary to clarify the relationship between economy and discharge and exploit the emission reducing potential of various factors fully.When reviewing the history of China’s industrial emission reduction,we find that remarkable achievements were made during the 11th Five-Year-Plan and 12th Five-Year-Plan period.By backtracking and analyzing the industrial pollution situation during these period,we can find out the key factors of emission reduction,as a result,enhancing the work efficiency of energy conservation and emission reduction during the 13th Five-Year-Plan period.This paper focuses on the emission of industrial COD and Nh3-N during the 11th Five-Year-Plan and the 12th Five-Year-Plan period,then decompose the driving factors of China’s industrial water pollution into the degrees of scale effect,structural effect,technological effect,source cutting effect,process controlling effect,end treatment effect.By analyzing internal characteristics and the industrial differences of above key influential factors,this paper tries to guide emission reduction.In the first part,the paper introduces the research background and significance,followed by an overview of EKC(Environment Kuznets Curve),Factor Decomposition Analysis,and the driving factors of china’s water pollution reduction.Chapter two reviews and analyzes the total emissions and industrial features on industrial waste water,COD and Nh3-N.In chapter three,based on de Bruyn model,the paper decomposes the driving factors of China’s industrial water pollution into the degrees of scale effect,structural effect and technological effect,which is further be decomposited into density effect,recycling effect and treatment effect.Chapter four and five focus on the emission of industrial COD and Nh3-N,dcomposite the structure and analyze the influential factors’ internal characteristics and industrial differences deeply.In last Chapter,the paper summarizes research results and puts forward several policy suggestions.This dissertation turned out that the degrees of scale effect,structural effect,technological effect,density effect,recycling effect and treatment effect on industrial COD reduction from 2006 to 2015 were 103.12%,-9.76%,-136.03%,95.32%,-6.85%,-47.58%.The industrial Nh3-N reduction were 102.60%,-7.03%,-139.89%,-89.40%,-2.61%,-47.87%.The results show that the economic expansion is the top factor that influence emission increasing on COD and Nh3-N.The technological advancement was the top factor that influence emission reduction.Adjustment on industries had limited effect on the reduction of COD and Nh3-N.Among them,the reduction of emissions on the source was the most significant factor.The end governance also played an important role.The process control,which adds emission in "11th Five-Year" period but turns out to be decreasing factor in "12th Five-Year" period,still has great potential on emission reduction of COD and Nh3-N.For emission reduction of COD technology,the source reduction and end-governance is gradually taking place by the whole governance mechanism of source,process,and end-to-end governance.For Nh3-N technology reduction,due to the influence of wastewater treatment facility technology,the role of end treatment is gradually weakening.But if the existing wastewater treatment facilities can be upgraded,there is still a greater potential for end governance.According to the research results,this study puts forward the following policy recommendations,including reasonable control on the scale of development,strict control on the expansion of high-pollution,high-energy-consuming industries;acceleration on the adjustment of industrial structure,Ban of the "ten small" enterprises,acceleration the conversion of old and new kinetic energy;promotion on the technology of industrial enterprises,implement of clean-up transformation in key industries,conduction of whole process emission reduction from the source to the end of the entire process;implement of water-saving actions on industrial enterprises,improvement of recycling water efficiency through water efficiency improvement,water-saving technology and other projects;centralized treatment of industrial pollution,relocating pollution enterprises from urban planning area to industry zone,and intensive agglomeration and development of industrial enterprises.