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A kind of microbe-enhanced bacterial agent and its application that can significantly promote the composting effect before domestic waste incineration

A domestic waste incineration and microbial technology, which is applied in the field of microbial enhanced bacterial agents, can solve the problems of increasing operating costs of waste incineration, unstable natural composting process, and reduced low-level calorific value of waste, so as to increase the calorific value of incineration and promote waste recovery. The effect of increasing the lower calorific value and promoting the leaching of water

Active Publication Date: 2021-01-26
QINGDAO SHANGDE BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 2. The natural fermentation process is unstable and easily affected by the external environment
Especially in the northern part of my country, the temperature in winter is low, which leads to the extremely low activity of microorganisms in domestic waste, and the amount of water removal is not enough within the composting time of process design, the low calorific value of waste is reduced, and the efficiency of waste incineration becomes low
[0007] 3. Due to the low temperature in winter in northern my country and insufficient composting and fermentation, a large amount of combustion accelerants are required in the process of waste incineration, which greatly increases the operating cost of waste incineration.

Method used

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  • A kind of microbe-enhanced bacterial agent and its application that can significantly promote the composting effect before domestic waste incineration
  • A kind of microbe-enhanced bacterial agent and its application that can significantly promote the composting effect before domestic waste incineration
  • A kind of microbe-enhanced bacterial agent and its application that can significantly promote the composting effect before domestic waste incineration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1. Isolation, screening and identification of Lactobacillus pasteri GBW-HB1903

[0040] 1. Screening of Lactobacillus pasteri GBW-HB1903

[0041] Municipal domestic sewage was used as the sample, and after gradient dilution, the MRS medium containing calcium carbonate was used to pour culture to screen the colony with obvious "calcium dissolution circle". After multiple purifications, a single colony was obtained, named GBW-HB1903, and preserved.

[0042] Such as figure 1 As shown, the colony of the strain GBW-HB1903 on the MRS plate is round, milky white, 1-2 μm in diameter, smooth, moist and shiny, slightly raised in the middle, opaque, with neat edges and no halos. The strain GBW-HB1903 can grow and reproduce normally in the temperature range of 10-45°C, and its optimum growth temperature is 25-35°C; it can grow in the range of pH 6-9, and the optimum growth pH value is 6.5 ~7.5; it can grow normally when the dissolved oxygen content is less than 0.5mg / L or greater...

Embodiment 2

[0068] The preparation method of the microorganism-enhanced bacterial agent for significantly promoting the composting effect before domestic waste incineration described in the present invention is as follows:

[0069] 1. Activate Lactobacillus pasterii, Clostridium butyricum, Bacillus lentus and Bacillus psychrophilus in corresponding medium respectively, and then culture them in respective mediums.

[0070] Among them, Lactobacillus pasteri culture medium: soybean peptone 12g, yeast extract 6g, K 2 HPO 4 5g, triammonium citrate 2g, MgSO 4 ·7H 2 O0.5g, sodium acetate 5g, glucose 10g, Tween 801ml, CaCO 3 5g, MnSO 4 4H 2 O0.25g, distilled water 1000ml, pH 6.0, culture time 12 hours, culture temperature 28 ℃. Clostridium butyricum medium: glucose 10g, soybean peptone 10g, yeast extract 5g, sodium acetate 4g, sodium chloride 1g, MgSO 4 0.1g, K 2 HPO 4 2g, Na 2 CO 3 3g, 1000ml distilled water, pH 6.5, culture time 24 hours, culture temperature 32°C. The culture medium...

Embodiment 3

[0074] The preparation method of the microorganism-enhanced bacterial agent for significantly promoting the composting effect before domestic waste incineration described in the present invention is as follows:

[0075] 1. Activate Lactobacillus pasterii, Clostridium butyricum, Bacillus lentus and Bacillus psychrophilus in corresponding culture medium respectively, and then culture them in respective culture medium.

[0076] 2. Add 1.0 kg of talcum powder to the fermented broth of 1.0 L of Bacillus lentus and Bacillus psychrophilus with a volume ratio of 1:1 after cultivation. After mixing evenly, the temperature inside the tower is 82°C, and the temperature of the outlet air is 78°C. Under the condition of ℃, spray drying method was used to make solid powder, and 2kg of carrier was added again to prepare solid bacterial powder A with a bacterial content of 50 billion / g.

[0077]3. Add 1.0kg of sterilized calcium carbonate to the cultured 1.0L Clostridium butyricum and Lactoba...

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Abstract

The invention discloses a microorganism-enhanced bacterial agent for significantly promoting the composting effect before incineration of domestic garbage and an application thereof. The enhanced bacterial agent is made by mixing a variety of composite bacterial agents or composite bacterial agents with a carrier, and the composite bacterial agent includes Lactobacillus parreni with a preservation number of CGMCC No.18391, and a preservation number of CGMCC No.14499. Clostridium butyricum, Bacillus lentus with preservation number CGMCC No.18392 and Psyrophilic Bacillus with preservation number CGMCC No.18393. The microbial enhanced bacterial agent of the present invention can significantly promote the effect of composting fermentation before domestic waste incineration, increase the low calorific value during waste incineration, promote the dehydration of garbage, and can also increase the abundance and content of functional microorganisms in garbage composting fermentation, and accelerate the efficiency of garbage fermentation process, and in cold regions, the bacterial agent can also quickly start the composting process, significantly reducing the use of combustion aids.

Description

technical field [0001] The invention belongs to the biotechnical field of domestic waste incineration power generation pretreatment methods, and in particular relates to a microorganism-enhanced bacterial agent for significantly promoting the effect of composting fermentation before domestic waste incineration and its application. Background technique [0002] At present, the domestic waste treatment methods in my country mainly include landfill, composting and incineration. Landfilling needs to occupy a large amount of land. Composting is difficult to use due to the low degree of waste classification. Compared with other treatment methods, it has considerable advantages in terms of harm and resource utilization. With the development of urbanization in our country, the land that can be used to bury domestic garbage is decreasing day by day, so incineration method has become the method of choice for domestic garbage in more and more places in our country. Before garbage incin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N1/20B09B3/00C12R1/225C12R1/145C12R1/07
CPCB09B3/00C12N1/20
Inventor 王熙涛袁绍辉孙志刚赵金超
Owner QINGDAO SHANGDE BIOTECH
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