Resource utilization method of dung and dirt generated by pig breeding

A technology of recycling and manure, which is applied in the field of resource utilization of pig manure, can solve the problems of resource loss and environmental pollution of pig manure, and achieve the effects of strong practicability, environmental friendliness, and improvement of resource efficiency

Active Publication Date: 2017-08-22
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of serious environmental pollution and resource loss caused by pig manure

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 500 kg of pig manure and crushed rice straw are mixed in a mass ratio of 5:2 and placed in a fermentation device, the pH is adjusted to 6.5, the inoculum amount of anaerobic activated sludge is 15%, and the fermentation substrate is acidified for 4 days under concurrent conditions At the end of concurrent acidification, the fermented liquid was blown off with nitrogen for 10 minutes, then high-temperature anaerobic rapid fermentation was carried out at a fermentation temperature of 50°C, and the fermentation time was 10 days. The fermentation product biogas was collected, and the biogas residue and biogas slurry were subjected to multi-stage transformation and multi-stage transformation respectively. purify. Multi-stage transformation of biogas residues: mix biogas residues, Chinese cabbage tails, and banana peels in a mass ratio of 2:1:1, and breed maggots or fruit flies; inoculate 8 grams of fly eggs per 10 kg of biogas residues, tail vegetables, etc. Proportional ino...

Embodiment 2

[0024]500 kg of pig manure and crushed rice straw are mixed in a mass ratio of 1:2 and placed in a fermentation device, the pH is adjusted to 7.5, the inoculum amount of anaerobic activated sludge is 55%, and the fermentation substrate is acidified for 8 days under concurrent conditions , after the end of concurrent acidification, the fermentation liquid was blown off with nitrogen for 30 minutes, and then high-temperature anaerobic rapid fermentation was carried out. The fermentation temperature was 60 ° C, and the fermentation time was 15 days. purify. Multi-stage transformation of biogas residues: mix biogas residues, Chinese cabbage tails, and banana peels in a mass ratio of 1:5:5, and breed maggots or fruit flies; inoculate 8 grams of fly eggs per 10 kg of biogas residues, tail vegetables, etc. Proportional inoculation, maggot breeding temperature 28 ℃, breeding in a room with a relative humidity of 80%, changing the mixture of biogas residues, tail vegetables and so on e...

Embodiment 3

[0026] 500 kg of pig manure and crushed rice straw are mixed in a mass ratio of 1:1 and placed in a fermentation device, the pH is adjusted to 7.0, the inoculum amount of anaerobic activated sludge is 30%, and the fermentation substrate is acidified for 6 days under concurrent conditions , after the end of concurrent acidification, the fermentation liquid was blown off with nitrogen for 20 minutes, and then high-temperature anaerobic rapid fermentation was carried out. The fermentation temperature was 55 ° C, and the fermentation time was 13 days. purify. Multi-stage transformation of biogas residues: mix biogas residues, Chinese cabbage tail vegetables, and banana peels at a mass ratio of 2:5:5, and breed maggots or fruit flies; inoculate 8 grams of fly eggs per 10 kg of biogas residues, tail vegetables, and other mixtures Proportional inoculation, maggot breeding temperature 28°C, breeding in a room with a relative humidity of 60%, changing the mixture of biogas residues and...

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Abstract

The invention relates to a resource utilization method of dung and dirt generated by pig breeding. In accordance with massive waste generated in a breeding process of live pigs, a multi-level coupling resource method for the dung and dirt generated by pig breeding is established, and high-temperature negative-pressure quick anaerobic fermentation for the dung and dirt generated by pig breeding is developed. A mixed raw material fermentation strategy is established, so that the C / N ratio of an anaerobic fermentation substrate for the dung and dirt generated by pig breeding is regulated, and quick catalytic conversion for the dung and dirt generated by pig breeding is realized; and a fermentation product biogas residue multistage transformation and biogas liquid multistage purification technology is developed, so that fermentation products are further recycled and purified, and products of high protein feeds and the like are obtained. The environment is protected, and green sustainable development of the pig breeding industry is promoted. The invention creatively provides a resource utilization mode of the dung and dirt generated by pig breeding, develops multi-level coupling resource utilization of the dung and dirt generated by pig breeding, realizes the deep biological purification and resource recovery of the dung and dirt generated by pig breeding, greatly improves the purification efficiency of the dung and dirt generated by pig breeding, and protects the environment. In the resource utilization process of the dung and dirt generated by pig breeding, new pollutants are not generated, the practicality is high, the resource utilization method is environmentally friendly and scale application is easy to realize.

Description

technical field [0001] The invention relates to the technical field of resource utilization of pig manure. Background technique [0002] In recent years, the problem of pig manure pollution has become a major agricultural ecological environment issue of widespread concern in my country, posing a serious threat to the sustainable development of modern agriculture and social economy, the safety of agricultural ecological environment and the quality and safety of agricultural products. Due to the particularity of the development of my country's pig industry, copying foreign technologies and theories cannot effectively solve the major environmental problems faced by my country's agricultural field, and it is difficult to effectively curb the growing environmental pollution of the pig industry. Focusing on the major strategic needs of my country's pig industry pollution prevention and control, it is necessary and urgent to develop pig manure treatment technology. [0003] If pig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K10/26A23K10/20A23K10/30A01G31/00C05G1/00C05F15/00
CPCA01G24/00C05D9/00C05F9/04C05F3/00C05F11/08Y02E50/30Y02W30/40Y02P60/87
Inventor 郑洪立刘玉环刘明智唐娟余佳佳胡涵翠宋可王允圃
Owner NANCHANG UNIV
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