Study of Odor Protective Distance of Different Scale Pig Farms for Chongming County,Shanghai

odor protective distance%pig farms%Chongming County of Shanghai

The pig farms odor pollution has drawn more and more attention ,and how to determine the odor protective distance and w hich methods should be used to determine it are the focus of odor pollution environmental remediation and management .Based on the basic principles of atmospheric environment protective distance ,health protection distance and Livestock and Poultry Industry Pollution Prevention and Control Technical Specifications ,and according to SCREEN3 model and health protection distance formula and distance in technical specifications ,this article selects two characteristic odor pollution factors - - -NH3 and H2S ,and calculates the odor protective distance of different scale pig farms .Meanwhile ,based on response analysis of protective distance and results deviation analysis ,it puts forward the odor pollution remediation appropriate management strategies .The results show that :(i) When the scale of pig farms is less than or equal to 120 ,000 , the odor protective distance is determined by Livestock and Poultry Industry Pollution Prevention and Control Technical Specifications ;when the scale of pig farms is larger than 120 ,000 ,the odor protective distance is determined by atmospheric environment protective distance calculated by SCREEN3 model;(ii) H2S is decisive factor to determine the odor protective distance .