The Research Of Xingyun Lake Vellay Raising Livestock Pollution Characters And Quantitative Estimation

Currently, animal husbandry has been under high-speed development due to increasing demand for animal by-products, therefore, livestock pollution problem has become a serious threat on the ecological environment, especially on the water environment. Previous livestock pollution research mainly focused on the end of the project management technology which already cannot solve the contradiction between stockbreeding pollution and environmental protection in our country. However, mastering the mechanism of livestock pollutant loss characteristics, migration transform regularity and the mechanism of pollutants environmental effect has great theoretical guidance meaning and practical value on the entire process control of livestock and poultry pollutants and the environmental management raising livestock.Based on the comprehensive analysis of present situation of raising livestock environmental pollution around Xingyun Lake watershed, this paper systematically analyzed the nitrogen and phosphorus loss characteristics in raising livestock pollutants, watershed nutrient balance characteristics and the feasibility of livestock waste den growth using the relevant theoretical knowledge on environmental science, ecology disciplines and the circular economy concept through the field investigation and in-situ monitoring and laboratory analysis method, and proposed corresponding treatment technology and management measures according to the results of this study.The main research contents were as follows:(â… ) This thesis started from recent situation analysis of the livestock and poultry breeding industry around Xingyun Lake watershed, estimated the amount of animal pollutants from township in the basin by discharge coefficient theory, further accounted the farm manure loading and took alert and classification on different extent of the township agricultural livestock fecal load bearing. Meanwhile, it studied the affection of the livestock and poultry on the water environment, measured the loss of pollutants pouring into water bodies according to the amount of the township manure generated pollutants and analyzed the contribution value of variety of pollutants on water pollution by introducing pollutants equivalent standard evaluation method.(â…¡) Continuous positioning monitoring analysis for surface water and breeding wastes from typical breeding area was undertaking. Mastering the characteristics of nitrogen and phosphorus loss and migration rules, and determining the transformation parameters for pollutants were also studied for providing references to further research in the watershed.(â…¢) Nutrient balance characteristics for raising livestock in watershed was under systematically analyzed, and then environmental risk evaluation was taken afterword, the source and loss of nitrogen and phosphorus were discussed. Research showed that the main nutrient input source was nonlocal feed, main approaches of nitrogen and phosphorus loss were farm sewage.(â…£) Control technology and management measures for livestock and poultry breeding pollutants were proposed in the whole process according to recycling economic principle through the experimental results.