Method for weight reduction treatment and utilization of livestock and fowl manure and wastewater

Abstract

The invention relates to a method for weight reduction and utilization of livestock and fowl manure and wastewater. The method comprises the steps of treating wastewater by a circulating water treatment pond and treating solid manure by a biological bed, wherein a small ecosphere is built manually, and such local aquatic animals and plants and microorganisms as water earthworm, crucian, chub, bighead carp, herring, grass carp, nitrobacteria and water spinach are preferably put into the ecosphere, a good environment suitable for survival of different organisms under small environments according to different habits of different organisms is created to set up biological circulation system for totally clearing up livestock and fowl manure and wastewater in the system. With the method, the biological risk of the introduced organisms is eliminated, the pollution to the air is reduced, the potential troubles of heavy metal pollution of feed additives are removed, the sales income obtained from the products produced by the preferable organisms can provide financial support for the system, and therefore long-term running of the system is guaranteed.

Description

Technical field [0001] A method of reduction and utilization of poultry and livestock dirt is used in the field of poultry and livestock aquaculture and environmental protection. Background technique [0002] The poultry breeding industry has been dispersed from the previous family to the current large -scale farms, breeding communities, and breeding bases. The degree of scale is getting higher and higher.Become the first factor in rural environmental pollution. The pollution of poultry and livestock stools is mainly the negative effect of odor and excessive fertilizer. The odor is because poultry and livestock and urine contain protein and urea.Steel substances such as ammonia, sulfide and derivatives enter the air and reduce the air quality. Excessive excessive application of poultry and livestock can not be used by crops, which can make crops long, inverted, late maturity, causing production reduction or even poisoning and penetrating into groundwater.There is also a copper zi...

AI Technical Summary

Problems solved by technology

Composting and fermenting farmland with poultry and livestock manure used to be a traditional treatment method in China. It is an important link in the agricultural ecological chain and an important resource. It is suitable for small-scale family farming models, but it is no longer suitable for modern large-scale farming. Enterprises deal with poultry and livestock manure; the organic fertilizer production method is to use these manures to make organic fertilizers. This technology requires large-scale manufacturing equipment, such as dry-wet separation equipment for manure. Compared with chemical fertilizers, the economic benefits of direct fertilizer production are not It is not obvious, so it has not been able to become the mainstream method of poultry and livestock manure treatment; biogas treatment method is the fastest-growing treatment technology in recent years. Production is mainly based on production capacity (methane). All feces and urine sewage enter the biogas digester, but multiple times of water must be added, which increases the processing capacity of the biogas slurry and easily causes secondary pollution. Even if the power is generated, the power generation is unstable and the investment is large. , the cost is relatively high, so government subsidies are needed; the combination of farming, animal husbandry, forestry and planting is the earliest and is now the most respected method, but this method needs to properly solve the matching problem between the breeding scale of the farm and the planting area. According to relevant According to research and calculation, the cost of the combination of agriculture and animal husbandry should be centered on the farm. If the range exceeds 13 kilometers, the transportation cost exceeds the value of the manure itself. A 10,000-head pig farm can produce 7,000 tons of manure and urine a year, requiring more than 10,000 mu Only farmland can absorb these manures harmlessly, and labor cannot be included in the cost. Therefore, under the conditions of land ownership such as household contracted land in our country, it is necessary for farms to coordinate so many farmlands as land for manure disposal. An impossible task, the combination of animal husbandry and fishing is currently one of the most effective ways to absorb poultry and livestock manure in agriculture. However, it is still limited by the ability to absorb manure. One mu of fish ponds can accept more than two pig manure. There will be dead fish in the pond, and earthworms are also used to treat manure. However, because no good earthworm species have been introduced, the reduction in poultry and livestock manure is not obvious. Moreover, because there is no treatment for ammonia, earthworm farms will pollute the air. very serious

To sum up, no matter what kind of treatment methods are used, the pollution will eventually enter the environment directly. When the breeding industry becomes larger, these treatment methods are not enough to deal with these feces

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