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Animal carrion and static compost hazard-free treatment method of products thereof

A technology for harmless treatment of animal carcasses, applied in animal carcass fertilizer, biological organic part treatment, fertilizer made from biological waste, etc., can solve problems such as environmental pollution

Inactive Publication Date: 2010-09-22
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a harmless treatment method for animal carcasses and their products. The method eliminates pathogenic microorganisms in animal carcasses through static composting and fermentation technology, eliminates hidden dangers of epidemic disease transmission, and degrades animal carcasses and their products. Products, which solve the problem of environmental pollution during the processing of animal carcasses and their products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: build the biosafety static composting system of infected cattle carcasses, the method is to use haystacks to encircle the rectangular fermentation bins of 25m in length, 5m in width, 2.4m in height and 1.2m in thickness, and lay silage in the whole fermentation bin Plastic sheeting, then laying 40cm thick hay, 16 cow carcasses (average weight 343kg) were placed on the hay, covered with 160cm thick cow dung, and finally covered and closed with plastic sheeting. The temperature of the middle layer of the compost rises rapidly, reaching above 55°C in 8 days, and maintaining the range of 55-63°C for more than 35 days. Lasts 4 months. to 10 9 CFU / g and 10 6 EID 50 Escherichia coli O157:H7 (Escherichia coli O157:H7) and Newcastle disease virus (Newcastle disease virus) inoculated at the concentration of / g were all inactivated on the 7th day. Five months after the first phase of static composting, the cow carcasses have been completely degraded by the first ...

Embodiment 2

[0030] Embodiment 2: Build the biosafety static composting system of cattle carcass and cattle tissue. The construction method is to build a cuboid fermentation bin with thick haystacks. In the bin, a thick plastic sheet is first laid, and then 40cm thick hay, 60cm thick hay are put in successively. Thick cow dung, 16 cow carcasses (average weight 411kg), 20 cow brains and spinal cord tissues, and 100cm thick cow dung. Finally, thick plastic sheets were used to fully seal and cover the composted materials to form a biosafety barrier. The temperature of cattle carcass compost at three different depths in the upper, middle and lower layers rose rapidly, reaching 55°C after 7 days, and remained above 55°C for more than 70 days. Coliform bacteria in cow manure were completely inactivated on the 7th day. The degradation rate of the specific bovine-derived DNA fragments in bovine brain soft tissue reached 84% on the 7th day. After 7 months of the first phase of static composting, t...

Embodiment 3

[0031] Embodiment 3: set up the static composting system of infected chicken carcasses, use haystacks to encircle the rectangular fermentation bins of 2.1m in length, 1.2m in width, 0.9m in height, and 0.3m in thickness. Put in 20cm thick chicken manure, put 10 chicken carcasses (average body weight 1.5kg) in a tiled manner, then put in 20cm thick chicken manure, put in 10 chicken carcasses (average body weight 1.5kg) in a tiled manner, Cover the corpse with 30cm thick chicken manure, cover the top layer of compost with thick plastic sheeting, and build compost. The test results of physical and chemical properties such as temperature show that the depth where the chicken carcass is located reaches 55°C on the 17th day and remains higher than 55°C for more than 12 days, the highest temperature reaches 62°C, and the moisture content of the compost at this depth is between 48% and 52°C. %, the pH value fluctuates between 5.3-7.6, which is suitable for the growth and metabolism of...

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Abstract

The invention relates to an animal and a static compost hazard-free treatment method of products thereof, belonging to the field of environment protection. The method is characterized by comprising the step of simultaneously mixing carbon source accessories such as dry hay and the like and nitrogen source accessories such as animal wastes and the like with animal carrion and products thereof for composting. Based on the compost construction method, a single-layer or multi-layer construction method is adopted according to animal weight. After compost is constructed, the temperature of the compost is increased to 55 DEG C and maintained for more than 3 days or is increased to 45 DEG C and maintained for 7 days, so that disease microorganisms are inactivated basically. After the compost is constructed, the compost is statically treated and turned after a certain period of time, and the process is repeated until the compost is fermented so that the compost becomes thoroughly decomposed and can be applied. The invention is safe, environmental friendly and economical, and cheap compost accessories easily obtained in villages, such as dry hay, straw, animal wastes and on the like, are used for decomposing the animal carrion; the animal carrion and the products thereof can be thoroughly decomposed and converted into a beneficial green organic plant fertilizer; and a feasible method is provided for an application in animal epidemic outbreaks.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and relates to a static composting harmless treatment method for animal carcasses and products thereof. Background technique [0002] In recent years, highly pathogenic animal infectious diseases such as mad cow disease, foot-and-mouth disease and avian influenza have ravaged the world, posing a great threat to human health and the economy of various countries. The harmless treatment of infected animals and their products and excreta is an important measure to completely eradicate the source of the epidemic, prevent the hidden dangers of the epidemic and cause the spread of the epidemic, and is an important part of the implementation of emergency animal epidemic elimination. Traditional treatment methods for infected animals mainly include deep burial, incineration and oil refining. Although they are still widely used, they all have certain environmental safety hazards or economi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00C05F1/00C05F17/00C05F3/00C05F5/00
CPCY02A40/20Y02E50/30Y02W30/40
Inventor 徐永平金礼吉徐卫平王爽范时
Owner DALIAN UNIV OF TECH
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