Design and Experiment of Rapid Compost Process and Equipment by Using Solid Manure on Scale Pig Farm

被引：0
|
作者：
Yuan X. [1 ]
Li X. [1 ]
Wu H. [1 ]
Zhang J. [1 ]
Hu D. [2 ]
Sun T. [3 ]
机构：
[1] Hebei Agricultural Mechanization Research Institute Co., Ltd., Shijiazhuang
[2] Institute of Agro-resources and Enviroment, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang
[3] Qian'an Agriculture and Rural Affairs Bureau, Qian'an
来源：
Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery | 2021年 / 52卷 / 09期
关键词：
Aerobic fermentation; Intelligent fermentation tank; Pig farm; Process; Solid manure;
D O I：
10.6041/j.issn.1000-1298.2021.09.040
中图分类号：
学科分类号：
摘要：
The small and medium-sized scale pig farm in China has problems such as low efficiency of collection and utilization of manure, lack of corresponding processing equipment. Aerobic composting is an effective technology for the treatment and reuse of solid organic wastes in the form of organic fertilizer. The rapidly high temperature aerobic composting process and experiment were determined by calculating the amount of manure generation and collection, combined with the pig existing infrastructure on a scale farm with 2 000 pigs. Then the equipment was verified in this pig farm. The results showed that 60% of the daily production wastes was solid manure which was about 1.2 t and the main structure covered an area of 485.5 m2 in which equipment covered an area of 13.2 m2. The total nitrogen loss rate, total phosphorus loss rate and total potassium loss rate during the rapid aerobic compost process was 8.3%, 1.7% and 0, respectively. In addition, the moisture content of compost was 43% and the death rate of lumbricoid egg was 100%. Also, the number of fecal coliforms was less than 3 CFU/g. These indicated the compost reached the standard of harmless hygiene in relevant industries. The average daily energy consumption of the fermentation tank was 63.5 kW•h/d under the environmental conditions of 10~25℃. The adoption of this technical mode and equipment can realize daily cleaning, in situ treatment, timely conversion and return it to the field, which provided technical and equipment support for the harmless utilization of feces in small and medium-sized pig farms. © 2021, Chinese Society of Agricultural Machinery. All right reserved.
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页码：355 / 360
页数：5
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