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Method of fermenting and composting feces of livestock and poultry

A technology of livestock manure and composting, applied in organic fertilizers, fertilization devices, excretion of fertilizers, etc., can solve the problems of soil and water environment pollution, effective removal of antibiotics and heavy metals, etc.

Active Publication Date: 2017-07-14
INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Both conventional aerobic composting and anaerobic composting can obtain finished organic fertilizers. However, due to the imperfection of my country's organic fertilizer standards, antibiotics and heavy metals added to feed additives in livestock and poultry farms cannot be effectively removed during the composting process. The reuse of fertilizers contaminated by antibiotics and heavy metals will cause new pollution to the soil and water environment

Method used

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  • Method of fermenting and composting feces of livestock and poultry
  • Method of fermenting and composting feces of livestock and poultry

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preparation example Construction

[0034] According to the present disclosure, the preparation method of the composite catalyst may further include: (d) the mineral powder combustion step of the step, including: the first combustion process, which is roasted by heating at a temperature of 50-300° C. for 2-3 hours; the second Combustion process, after the first combustion process is completed, the natural ore powder that has been burned for the first time is heated at a temperature of 300-850°C for 0.5-10 hours to perform the second combustion; in the mixing process step of (e), 60-80% by weight of crushed mineral powder into 45 micron-2 nanometer size, 20-30% by weight of H 2 0 and 2-10% by weight of the natural plant roots, stems and leaves of Geliflower are mixed to obtain the mixed powder; In the temperature range from -10°C to 200°C, ripen for 10-90 days for fermentation; (f) for the sterilization and drying step, sterilize in a roasting furnace at a high temperature below 180°C for 0.5-2 hours, and Dry at...

Embodiment 1

[0047] This example is used to illustrate the method for fermenting and composting poultry manure of the present disclosure.

[0048] use as figure 1 The device shown is for fermenting and composting poultry manure, and the mixed material is fresh pig manure (containing 21.1 mg / kg of tetracycline antibiotics, 0.32 mg / kg of arsenic ions, 1.63 mg / kg of chromium ions and 11.95 mg / kg of copper ions), Straw, after adjusting livestock and poultry manure and straw according to the ratio of carbon to nitrogen ratio of 20-25, add 0.3% composite catalyst, adjust the moisture content of the mixed material to 65%, the initial temperature is the ambient temperature, and the pH value is 7.8. Enter the device through the feed port 10, and apply voltage at both ends of the mixed material heap during the fermentation process, so that the organic matter, antibiotics and heavy metals in the mixed material heap undergo electrolytic reactions, compost for 10 days, and the compost filtrate is disch...

Embodiment 2

[0050] The raw materials, device and method of Example 1 are used to ferment and compost poultry manure, but the difference is that the amount of composite catalyst is 5% of the weight of poultry manure.

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Abstract

The disclosure relates to a method of fermenting and composting feces of livestock and poultry, which contains antibiotics and heavy metal ions. The method includes the following steps: under electrolytic treatment conditions, contacting a mixture material containing the feces of livestock and poultry with a compound catalyst to perform fermentation and composting, so that organic pollutants in the feces of livestock and poultry are subjected to an oxidization reaction on an anode while the heavy metal ions are subjected to a reducing reaction on a cathode and are converted into precipitates, thereby producing safe and effective organic fertilizers. In the method, the composting treatment of the feces of livestock and poultry is carried out with assistance of an electrochemical method, so that not only are antibiotics in the feces of livestock and poultry removed but also heavy metal ions are recovered. Meanwhile, by adding the compound catalyst, a synergistic effect on the composting process and the electrochemical reaction is achieved, so that the composting reaction is effectively accelerated and speed of electrolytically removing the antibiotics and heavy metal ions is increased, thereby increasing composting fertilizer efficiency and shortening composting period.

Description

technical field [0001] The present disclosure relates to the field of organic waste treatment, in particular to a method for fermenting and composting poultry manure. Background technique [0002] According to the Bulletin of the First National Survey of Pollution Sources, the pollution load from agricultural non-point sources has surpassed industry and has become the most important source of pollution. Among them, the pollution of livestock and poultry farming is the most serious. [0003] In order to improve the treatment efficiency of large-scale farms, fully exploit the value of manure resources, and minimize breeding pollution, solid manure is treated with composting, and liquid manure is anaerobically fermented through biogas facilities to produce biogas and biogas fertilizer. A third-party specialized centralized processing enterprise mainly collects livestock and poultry manure in a unified manner, conducts biogas power generation or produces bio-natural gas. [00...

Claims

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Application Information

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IPC IPC(8): C05G3/00
CPCC05F3/00C05G3/00C05F11/00Y02W30/40
Inventor 李红娜阿旺次仁朱昌雄李峰彭怀丽叶婧田云龙郭萍李莲芳
Owner INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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