集约化养鸡场(村)环境治理和鸡粪资源开发利用综合配套技术

为消除鸡粪对环境的污染,并将其加工处理成宝贵的饲料和优质有机肥,通过对国内采用的各种鸡粪加工处理方法的调查、研究与比较,设计提出一种集众法之长且有自身特色的新型鸡粪处理综合配套技术。它采用干除粪工艺,对鲜湿鸡粪先经“热床式尾气净化及余热回收利用设施”进行预处理,再进行烘干机烘干,最后加工成饲料或经有机无机肥生产线加工成肥料。经在北京等地实践应用表明,既可有效治理鸡场环境,又可获得明显经济与社会效益。

Comprehensive Technology for the Environmental Control of Intensive Chicken Farm (Village) and the Utilization of Chicken Dung

Intensive chicken farms have developed rapidly in China in the recent years, resulting in environmental pollution caused by chicken dung which is at the same time rich in nutrient,mineral material, and trace elements. Properly processed, chicken dung may become a kind of feed or organic fertilizer. There are many different processing methods of dung but each has its merits and demerits. The comprehensive technology referred to in this paper has collected the merits of many other processing methods and avoided their demerits. It starts with the environmental control of chicken farm, fully utilizes resources of chicken dung, and recycls waste material. The new technology " Heatbed-type installation of purification of waste gas and recovery of waste heat" is adopted in the preprocessing of the dung to make the waste gas multiplely purified to reach the requirement of non-polluted exhaust, and to use the greater part of the waste heat to dry up the wet dung. It not only saves energy but also saves processing cost of chicken dung. Using this technology, the environment of chicken farm is controlled with good economic and social profits.