Chicken manure drying and processing in large chicken farms

Zhao Huahai (South China Agricultural University, Guangzhou 510642)
(I) Contents Introduction The “Seventh Five-Year” National Spark Program project results were co-hosted by Guangzhou Likang Company, Guangzhou Agricultural Machinery Research Institute and South China Agricultural University (formerly Agricultural Engineering Department) (South China Agricultural University and Guangzhou City) Agricultural Machinery Design Unit). In 1990, it passed technical appraisal and acceptance. The chicken manure with a water content of 70%-80% can be rapidly and quickly dried to a moisture content of 14% and processed into a powdery or granular high-quality organic compound commercial fertilizer for storage and transportation.
The main technical and economic indicators achieved in production assessment and actual production:
Raw material (moisture content 70%-80%) processing capacity 1t/h
Moisture evaporation 0.668t/h
Drying system thermal efficiency 60%-70%
Drying unit unit heat consumption 3.55MJ/kg (water)
The entire production line energy consumption 2476MJ/h
Labor productivity (processed wet chicken manure) 1.7t/(personal class)
(II) Acceptance (identification) of advanced technology and equipment The conclusion points out that this achievement is the first domestic first-ever mechanized continuous operation of chicken manure drying and processing production line. With the features of large amount of treatment and precipitation, high thermal efficiency, short production cycle, high degree of mechanization, and continuous production in all weather conditions, the technology level is at the leading position in the country.
The production line is equipped with environmental protection facilities such as exhaust gas, waste water purification, dust removal, and noise reduction. The production work environment and the “three wastes” emission targets were determined by the Guangdong Provincial Monitoring Center and all met the relevant national standards.
This achievement won Guangzhou City's second prize for scientific and technological progress in 1993; it has been listed by the National Science and Technology Commission as one of the achievements of the Spark Program to be promoted throughout the country. And was allowed to be registered as one of the major scientific research achievements in Guangdong Province (Registration No. 930328).
(3) The scope of application is applicable to the treatment, processing, and resource reuse of organic waste from large and medium-sized collectivized livestock farms and high-humidity sludge and bad residue. It is also a farm and related factory environmental protection supporting technology facilities.
(IV) Production conditions Users and the use of this technology and equipment to produce commercial chicken manure organic composite grain fertilizers, a full set of equipment investment of about 400,000 yuan. Plant area of ​​about 300 square meters.
(V) Market Analysis China has more than 2.1 billion farmed chickens, and more than 100,000 chicken farms are located in large and medium-sized cities. About 100 million tons of chicken manure plus other poultry manure, as well as a large number of organic wastes associated with processing plants (sugar, wine, sauce, vinegar and other processing plants) as raw materials, urgently need to be disposed in order to eliminate environmental pollution and realize resources Reuse. Therefore, the technology and facilities have broad prospects for promotion and application.
(VI) Investment analysis Users will use this technology and equipment to produce commercial organic composite granular fertilizer with chicken manure as the main raw material. The total investment in the equipment is about 400,000 yuan (about 330,000 yuan for the production of dried chicken manure powder). 300 square meters, users can get 15% -25% of the product's annual net profit, equipment investment recovery period of about 2 years.
Each manufacturer produces and distributes a set of profitable tax of 20,000 yuan.

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