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A method for harmless treatment and recycling of livestock and poultry breeding manure

A technology of harmless treatment, livestock and poultry breeding, applied in sludge treatment, anaerobic digestion treatment, chemical instruments and methods, etc., can solve the waste of non-renewable phosphate rock resources of protein feed resources, uneven distribution, environmental pollution, etc. problems, to achieve the effect of optimizing the anaerobic fermentation process, increasing profits and reducing environmental pollution

Active Publication Date: 2017-08-15
青岛市畜牧兽医研究所 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although my country's phosphate rock reserves are relatively large, they are unevenly distributed and of low grade. According to a report from the Mining Association, if only rich ore with a grade greater than 30% is used, it can only meet the needs until 2028.
The excessive discharge of nitrogen and phosphorus from livestock and poultry manure not only causes serious pollution to the environment, but also causes a waste of protein feed resources and non-renewable phosphate rock resources that are in short supply in my country.

Method used

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  • A method for harmless treatment and recycling of livestock and poultry breeding manure
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  • A method for harmless treatment and recycling of livestock and poultry breeding manure

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Experimental program
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Effect test

Embodiment 1

[0030] Embodiment 1 A method for harmless treatment and recycling of livestock and poultry breeding manure

[0031] Its process is as figure 1 and figure 2 shown. First, build two sedimentation wells with a volume of 100 cubic meters and a brick-concrete structure. The manure produced by dairy farming enters the No. 1 sedimentation well through the underground sewage pipe network. After sedimentation for 24-48 hours, the solid part of the lower layer is used as organic Fertilizer, the upper liquid part enters the sewage pipe network, enters the No. 2 sedimentation well with production and domestic sewage, and continues to settle for 24-48 hours; the liquid obtained from the precipitation enters the sewage anaerobic fermentation tank treatment system (UASB anaerobic reactor, 8 meters high , with a diameter of 3 meters and an effective volume of 56 cubic meters, which can treat 5 tons of sewage at one time, purchased from Qingdao Yiweiyou Environmental Engineering Equipment C...

Embodiment 2

[0034] Embodiment 2 The economic benefit analysis of the inventive method

[0035] The organic fertilizer, biogas and hydropower in the final product obtained by the method of the present invention can be used for the production and life of the farm, and the duckweed can be used as livestock feed and starch extraction, which will generate considerable economic benefits. This project takes the implementation results of the method of the present invention in Qingdao Aote dairy cow original breeding farm in 2013 as an example to specifically illustrate the economic benefits generated by the method of the present invention.

[0036] 1 Project Incremental Sales Revenue

[0037] Incremental sales revenue and savings expenditure in 2013 are shown in Table 1.

[0038] Table 1 2013 Incremental Sales Revenue and Saving Expenditure Statistical Table

[0039]

[0040] 2 Sales tax and surcharges

[0041] According to relevant regulations, this project is exempt from value-added tax. ...

Embodiment 3

[0057] The biogas production effect of embodiment 3 sewage anaerobic fermentation treatment

[0058] The parameters of sewage anaerobic fermentation treatment were investigated through single factor screening experiments, and it was found that adding 1.5% NaOH to the liquid, adding hydrochloric acid to adjust the pH to 7.2 after standing for 2 days, and then putting it into the sewage anaerobic fermentation tank, anaerobic The activated sludge is an inoculum, the inoculum amount is 35% (volume), an anaerobic fermentation liquid is formed, and anaerobic fermentation is performed at 15-35° C. for 48 hours.

[0059] In addition, in order to increase biogas production, increase the removal rate of TS and VS, and improve the purification degree of treated sewage, the types of compound bacteria were also studied.

[0060] Inspection indicators:

[0061] 1) Gas production: measured by desaturated saline method;

[0062] 2) Volatile solids content (VS): measured by subtraction metho...

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Abstract

The present invention discloses a method for harmless treatment and recycling of livestock and poultry breeding manure waste. The method comprises that: manure waste produced from livestock and poultry breeding enters a 1# precipitation well through an underground waste discharge pipe network, and solid-liquid separation and submersible pump equipment is adopted to separate the solid part, and the solid part is processed into an organic fertilizer through a composting heap turner so as to be used for pasture and crop planting; the part of the separated sewage enters a sewage pipe network, and enters a 2# precipitation well with production and domestic sewage, the obtained liquid enters a sewage anaerobic fermentation tank treatment system, the biogas bud is used for processing organic fertilizers, the biogas slurry is used for algae pond duckweed breeding in a photovoltaic greenhouse, and the biogas is adopted as a fuel; and after the biogas slurry is purified through the duckweed of the duckweed breeding pond, the effluent is pumped into a purified water storage and utilization pool so as to be used as water for pasture and crop planting, or re-purification is performed by using reclaimed water treatment equipment, and a purified water pipe network is adopted so as to be used as water for livestock and poultry breeding production and be used for solar energy warm water drinking systems. According to the present invention, the recycling of the livestock and poultry production resources is achieved, the manure waste achieves zero emission, and the purpose of clean, safe and efficient production is achieved.

Description

technical field [0001] The invention relates to the fields of environmental protection and resource utilization, and discloses a method for harmless treatment and recycling of livestock and poultry breeding manure. Background technique [0002] With the trend of intensive and large-scale development of animal husbandry, the problem of manure pollution from livestock and poultry breeding has become a major environmental problem. For example, 25 to 35% of the nitrogen in the feed consumed by dairy cows is converted into nitrogen in milk, and the remaining nitrogen is almost all excreted through feces and urine. Nitrogen in feces is converted into ammonia and nitrate, causing serious ecological and social problems by polluting air, surface water, and groundwater. Excessive discharge of phosphorus in feces pollutes surface water and discharges to surrounding water bodies and oceans, which promotes the growth of algae and causes the death of fish. [0003] At present, my countr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/00C02F3/28C02F3/34C05F3/00A01G33/00A23K10/37A23K10/30
CPCY02A40/20Y02A40/80Y02E50/30Y02P20/133Y02P60/12Y02P60/87Y02W10/37Y02W30/40
Inventor 赵金山王建华李和刚周功克江科张新志孙长江马玉彬
Owner 青岛市畜牧兽医研究所