Utilization Of Resources To Large-scale Livestock Farm’s Solid Waste In Tianjin

With the rapidly development of national economy and improving of people’s living standards,the market demand for livestock products in Tianjin is also growing.Large-scale livestock breeding industry has developed rapidly,but the environmental pollution problem has become increasingly and has shown growing extent and scale of the trend.Based on the literature review,expert consultation and field visits foundation survey,summarizing the previous existing research results and obtaining current resource use patterns of large-scale livestock.The poultry solid wastes are mainly energy technology,for fertilizer,feed technology,bio-fermentation bed technology processing.And several ways of utilizing the advantages,disadvantages,and the scope of the analysis has been shown.Combined with the current manner in Tianjin and prospects waste utilization,using the best way to come to Tianjin large scale livestock farming is manure solid waste the production of organic fertilizer.Exploring the influence factors of organic fertilizer industry development in Tianjin from social,economic,technical,environmental,etc.and using AHP and system dynamics to establish and quantify organic fertilizer industry.Choosing Tianjin scale livestock and poultry industry as the research object,the index system of organic fertilizer industry development in Tianjin,select the most important factors in every aspect through expert scoring method;the establishment of SD for the development of organic fertilizer industry in Tianjin designed natural development type subsidies type,social consciousness oriented,improve scientific research and technology type,adjust the farming area layout,comprehensive complementary program of six,by Vensim software simulation of the advantages and disadvantages of the various programs carried out Comparison points,select the first industry output,trends of land carrying capacity four variables,COD emissions and ammonia emissions,etc.Showing livestock solid waste to produce organic fertilizer use on the social,economic,environment impact.In the results on the basis of the above model output for the development of organic fertilizer industry proposed to increase the diversity of organic fertilizer subsidies,increase farmers’ awareness and increase investment in research efforts and organic fertilizer production efforts,reasonable layout scale farming region,based on circular economy scientific breeding recommendations.