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Treating method for recycling waste of breeding industry

A disposal method and waste technology, applied in the direction of solid waste removal, recycling technology, application, etc., can solve the problems of decreased nutritional value, increased energy consumption, poor utilization value of biochar structure, etc., to achieve increased calorific value, Reduce the effect of combustion heating, accelerate diffusion and volatilization

Inactive Publication Date: 2017-02-22
NANJING AGRICULTURAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the process of using the biochar produced from aquaculture waste in the prior art. The structure of the biochar is poor when it is carbonized at low temperature and its use value is low, while it has a good structure but its nutritional value decreases when it is carbonized at high temperature. , and the problem of increased energy consumption, thus providing a disposal method for resource utilization of aquaculture waste

Method used

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  • Treating method for recycling waste of breeding industry
  • Treating method for recycling waste of breeding industry
  • Treating method for recycling waste of breeding industry

Examples

Experimental program
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Effect test

Embodiment 1

[0032] (1) Collect pig manure from pig farms and carry out solid-liquid separation to obtain solid separation and separation liquid with a water content of 60%;

[0033] (2) The straw is crushed into particles and mixed with the solid separation to obtain a mixture. The amount of straw particles added is 150 kg of straw particles per ton of the solid separation;

[0034] (3) Heat the mixture to 200°C to evaporate the water in the mixture, reduce the water content to 25%, complete the pre-dehydration treatment, and obtain the dehydration mixture;

[0035] (4) Heat the dehydration mixture to 500°C and keep it for 6 hours to complete the pyrolysis carbonization process, and isolate the air to cool down to obtain biomass char, such as figure 2 Shown.

[0036] Based on the weight of the solid separation, 180 kg of pig manure charcoal is obtained per ton of the solid separation.

Embodiment 2

[0038] (1) Collect chicken manure from chicken farms and perform solid-liquid separation to obtain solid separation and separation liquid with a water content of 55%;

[0039] (2) The rice husk is crushed into particles and mixed with the solid separation to obtain a mixture, and the amount of rice husk particles added is 200 kg of rice husk particles per ton of the solid separation;

[0040] (3) Heat the mixture to 200°C to evaporate the water in the mixture, reduce the water content to 30%, complete the pre-dehydration treatment, and obtain the dehydration mixture;

[0041] (4) Heating the dehydration mixture to 550°C and keeping it for 6 hours to complete the pyrolysis carbonization process, and isolate the air to cool down to obtain biomass charcoal.

[0042] Based on the weight of the solid separation, 190kg chicken manure charcoal per ton of the solid separation

Embodiment 3

[0044] (1) Collect cow dung from cattle farms and carry out solid-liquid separation to obtain solid separation and separation liquid with a water content of 50%;

[0045] (2) The bark is crushed into particles and mixed with the solid separation to obtain a mixture, and the amount of bark particles added is 180kg of bark particles per ton of the solid separation;

[0046] (3) Heat the mixture to 200°C to evaporate the water in the mixture, reduce the water content to 25%, complete the pre-dehydration treatment, and obtain the dehydration mixture;

[0047] (4) Heat the dehydration mixture to 500°C and keep it for 7 hours to complete the pyrolysis carbonization process, and isolate the air to cool down to obtain biomass charcoal, such as image 3 Shown.

[0048] Based on the weight of the solid separation, 200 kg of cow manure charcoal is obtained per ton of the solid separation.

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Abstract

The invention discloses a treating method for recycling waste of a breeding industry. The treating method includes: (1) collecting the waste of the breeding industry, and subjecting the waste to solid-liquid separation to obtain a solid separated material and a separated liquid; (2) mixing the solid separated material with granules of forestry and agricultural residues to obtain a mixture; (3) subjecting the mixture to pre-dewatering to obtain a dewatered mixture; (4) subjecting the dewatered mixture to pyrolysis and carbonization, and cooling to obtain biomass charcoal in isolated air. In a whole carbonization process, the forestry and agricultural residues are firstly pyrolyzed and carbonized to assist and prompt carbonization of the solid separated material around, pores formed during pyrolysis of a solid material accelerate outward diffusion and volatilization of internal gas, and carbonizing effect of the internal solid material is improved; the pores formed after the forestry and agricultural residues are carbonized become parts of micro-pores of the biomass charcoal, and also have a function of pore enlarging during carbonization of the solid material, so that a specific area of the biomass charcoal is enlarged, and an adsorbing capacity of the biomass charcoal is increased.

Description

Technical field [0001] The invention relates to a waste treatment method, in particular to a waste treatment method in aquaculture industry. Background technique [0002] With the continuous development of the aquaculture industry to scale and specialization, while supplying abundant meat, eggs, milk and food, it also produces a large amount of manure waste. It is reported that the annual production of livestock and poultry manure in China in 2015 reached nearly 3 billion Tons, the concentration of point sources in the breeding farm is likely to cause serious local environmental pollution. The veterinary drugs and antibiotics added in the feed make the residues of veterinary drugs and antibiotics in the breeding waste very common, such as pig manure and chicken manure from large-scale breeding Residues of sulfa veterinary drugs in Japanese cow manure can reach more than 50mg / kg. Antibiotic residues are detected in organic fertilizers used in the processing and utilization of live...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00C05D9/00C05G3/04C05G3/80
CPCB09B3/00C05D9/00C05G3/80Y02W30/78
Inventor 林志潘根兴邵前前李恋卿张少明张晓楠
Owner NANJING AGRICULTURAL UNIVERSITY
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