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A method for degrading antibiotics and heavy metals in livestock and poultry manure

A technology of livestock and poultry manure and antibiotics, which is applied in agriculture, climate change adaptation, organic fertilizers, etc., can solve the problems of incomplete passivation, long treatment cycle, and environmental temperature influence, so as to improve the efficiency of photosynthetic bacteria, shorten the fermentation cycle, The effect of high processing efficiency

Active Publication Date: 2021-10-15
山西龙盘微生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, composting has disadvantages such as long processing period, large floor area, influence by ambient temperature, incomplete passivation, and inability to completely separate heavy metals.

Method used

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  • A method for degrading antibiotics and heavy metals in livestock and poultry manure

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for degrading antibiotics and heavy metals in livestock and poultry manure, comprising the following steps:

[0032] a) Mix and stir 100g of collected cow dung and ozone water with a concentration of 10ppm for 30min at a ratio of 1:1 to obtain mixture A.

[0033] b) Mixture A was inoculated with Rhodopseudomonas palustris for anaerobic fermentation to obtain fermentation product B. The anaerobic fermentation conditions were light of 2000 lux, fermentation temperature of 40°C, pH value of 7, inoculation amount of 20g / L, and bacterial age It is the growth index phase, and the fermentation time is 90min.

[0034] c) Add 50mg / L polyaluminium chloride to the fermentation product B, and obtain the fermentation broth C after filtration. Promote the flocculation of photosynthetic bacteria that have adsorbed heavy metal ions, and completely remove heavy metal elements from the fermentation broth.

[0035] d) Inoculate Rhodobacter sphaericus in fermentation broth C for...

Embodiment 2

[0037] A method for degrading antibiotics and heavy metals in livestock and poultry manure, comprising the following steps:

[0038] a) Mix 200g of collected chicken manure with ozone water at a concentration of 20ppm and stir for 120min at a material-to-liquid ratio of 1:5 to obtain mixture A.

[0039] b) Mixture A was inoculated with 50% Rhodopseudomonas palustris, 20% Rhodobacter sphaericus and 30% Rhodobacter capsularis in mixture A for anaerobic fermentation to obtain fermentation product B. The anaerobic fermentation conditions were light 5000lux, fermentation temperature The temperature is 30°C, the pH value is 6, the inoculum amount is 30g / L, the bacterial age is in the growth exponential phase, and the fermentation time is 30min.

[0040] c) Add 90 mg / L polyaluminum chloride to the fermentation product B, and obtain fermentation broth C after filtration. Promote the flocculation of photosynthetic bacteria that have adsorbed heavy metal ions, and completely remove hea...

Embodiment 3

[0043] A method for degrading antibiotics and heavy metals in livestock and poultry manure, comprising the following steps:

[0044] a) Mix and stir 200g of collected pig manure and ozone water with a concentration of 0.5ppm for 90min at a ratio of solid to liquid of 1:10 to obtain mixture A.

[0045] b) Mixture A is inoculated with 80% by weight of Rhodopseudomonas palustris and 20% of Rhodobacter capsulata for anaerobic fermentation to obtain fermentation product B. The anaerobic fermentation conditions are light 4000lux, fermentation temperature is 40°C, and pH is 8. The inoculation amount is 0.5g / L, the age of the bacteria is in the exponential growth period, and the fermentation time is 90min.

[0046]c) Add 80 mg / L polyacrylamide to fermentation product B, and obtain fermentation broth C after filtration. Promote the flocculation of photosynthetic bacteria that have adsorbed heavy metal ions, and completely remove heavy metal elements from the fermentation broth.

[00...

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Abstract

The invention relates to a method for degrading antibiotics and heavy metals in livestock and poultry manure, and relates to the technical field of livestock and poultry manure fermentation treatment; the technical solution is to pretreat the livestock and poultry manure with ozone water, and then remove the heavy metals in the manure through secondary fermentation , the secondary fermentation is to first inoculate photosynthetic bacteria to carry out anaerobic fermentation, add flocculant after fermentation, and inoculate photosynthetic bacteria to fermented liquid after filtration and carry out aerobic fermentation to obtain the final fermentation product; the mode of step-by-step fermentation avoids copper, zinc The toxicity of ions to photosynthetic bacteria improves the efficiency of photosynthetic bacteria and shortens the fermentation cycle. In one fermentation cycle, pollutants such as antibiotics, copper, zinc, cadmium, chromium, and lead are simultaneously degraded, and the treatment efficiency is high; the treatment process is odorless and tasteless , will not cause secondary pollution to the environment; the treated bacterial liquid can be used as raw material for organic fertilizer.

Description

technical field [0001] The invention relates to the technical field of livestock and poultry manure fermentation treatment, in particular to a method for degrading antibiotics and heavy metals in livestock and poultry manure. Background technique [0002] In order to achieve the purpose of preventing animal diseases and promoting animal growth, antibiotics are added to many livestock and poultry feeds. At the same time, the addition of some feed materials will also bring some heavy metals, which lead to high concentrations of antibiotics and poultry in livestock and poultry manure. Heavy metal residues, with the development of my country's large-scale breeding industry, the production of livestock and poultry manure has increased sharply, and it is widely used in organic fertilizers to return to the field, resulting in a large amount of antibiotics and heavy metals being discharged into the environment, polluting soil and water quality, and entering the human body through the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05F3/00
CPCC05F3/00Y02A40/20
Inventor 张治家李保珍林晓峰白建勤齐良泉刘莉娟樊金华
Owner 山西龙盘微生物科技有限公司
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