Circulating system for ecological pig raising

Abstract

The invention provides a circulating system for ecological pig raising. The circulating system comprises a pig feeding area, a biogas digester area, an organic fertilizer processing area and a forage grass planting area, wherein the pig feeding area comprises a pig excrement separating device; liquid excrement obtained by solid-liquid separation of the pig excrement separating device enters the biogas digester area through a sewage treatment pipeline; the liquid excrement is subjected to anaerobic fermentation at the biogas digester area to generate biogas, biogas slurry and biogas residue; the biogas slurry enters the forage glass planting area through a biogas slurry discharge pipeline to be used as a fertilizer; the biogas is used for generating power and preserving the temperature of the pig raising area; solid excrement obtained by the solid-liquid separation of the pig excrement separating device enters the organic fertilizer processing area for preparing an organic fertilizer; the organic fertilizer and the biogas residue enter the forage grass planting area to be used as the fertilizer; forage grass grown in the forage grass planting area enters the pig raising area for raising pigs. The circulating system can sufficiently utilize various resources in the system, so that the production cost is greatly reduced, environmental pollution is alleviated, and a meat product which is more beneficial to human health can be obtained.

Description

technical field [0001] The invention relates to the technical field of breeding industry, in particular to a circulation system for ecological pig raising. Background technique [0002] Animal husbandry is the dominant industry and pillar industry of my country's rural economy. Some problems accompanying its rapid development have become increasingly prominent, such as the problem of livestock and poultry waste discharge. Although many farms have introduced technologies such as biogas, there are still pollution control projects, etc. Sewage cannot be completely absorbed, and a considerable part of the feces is directly discharged into the drain, wasting resources and damaging the environment; another example is in the pig industry, which has difficulties in disease prevention and management of livestock and poultry, and many postpartum diseases in sows , The growth of nursery pigs is hindered, the variety of pork and its products has declined, and the nutritional composition o...

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Problems solved by technology

[0004] In view of this, the present invention provides a circulation system for ecological pig farming to solve the problems of serious environmental pollution, difficult disease prevention and control, and low pork quality in modern pig farms.

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