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Device and method for improving anaerobic methanogenesis of kitchen garbage

A technology for anaerobic methane production and kitchen waste, applied in biochemical cleaning devices, biochemical equipment and methods, enzymology/microbiology devices, etc., can solve the problem of low biogas production and methane content, and high content of easily degradable organic matter , limit the growth of methanogenic bacteria and other issues, achieve the effect of increasing methane production rate and content, realizing resource utilization, and important promotion and application value

Pending Publication Date: 2018-03-30
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in actual engineering, the enzymes and coenzymes required for metabolism cannot be synthesized due to the high content of easily degradable organic matter and the lack of trace elements during the anaerobic digestion process of food waste, which severely limits the growth of methanogens. resulting in low biogas production and methane content

Method used

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  • Device and method for improving anaerobic methanogenesis of kitchen garbage
  • Device and method for improving anaerobic methanogenesis of kitchen garbage
  • Device and method for improving anaerobic methanogenesis of kitchen garbage

Examples

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Effect test

Embodiment 1

[0052] This embodiment provides a method for improving anaerobic methanogenesis of kitchen waste, which is implemented in the above-mentioned device 100 for improving anaerobic methanogenesis of kitchen waste, and specifically includes the following steps:

[0053] Wash the collected food waste with tap water, then manually pick out the bones, plastic products, paper towels and other sundries in the food waste, and finally, smash the food waste to 2-3mm.

[0054] Clean the anaerobic bottle 120 with a volume of 500mL, and put 200mL of kitchen waste and 50mL of anaerobic sludge in the initial stage of the anaerobic bottle 120, and then calculate according to the Fe dosage of 0.11mg / gVS, The amount of citric acid chelated iron to be added is 0.65 mg / gVS, and then nitrogen is passed through the anaerobic bottle 120 for 10 minutes, and then sealed with a rubber stopper.

[0055] The material in the anaerobic bottle 120 is heated and stirred with a magnetic stirrer 140. The heating ...

Embodiment 2

[0057] This embodiment provides a method for improving anaerobic methanogenesis of kitchen waste, which is implemented in the above-mentioned device 100 for improving anaerobic methanogenesis of kitchen waste, and specifically includes the following steps:

[0058] Wash the collected food waste with tap water, then manually pick out the bones, plastic products, paper towels and other sundries in the food waste, and finally, smash the food waste to 2-3mm.

[0059] Clean the anaerobic bottle 120 with a volume of 500mL, and put 200mL of kitchen waste and 50mL of anaerobic sludge in the initial stage of the anaerobic bottle 120, and then add citric acid chelation according to the dosage of 0.66mg / gVS iron, and then pass nitrogen in the anaerobic bottle 120 for 12 minutes, and then seal it with a rubber stopper.

[0060] The material in the anaerobic bottle 120 is heated and stirred with a magnetic stirrer 140. The heating temperature of the water bath is 35.5° C., and the rotation...

Embodiment 3

[0062] This embodiment provides a method for improving anaerobic methanogenesis of kitchen waste, which is implemented in the above-mentioned device 100 for improving anaerobic methanogenesis of kitchen waste, and specifically includes the following steps:

[0063] Wash the collected food waste with tap water, then manually pick out the bones, plastic products, paper towels and other sundries in the food waste, and finally, smash the food waste to 2-3mm.

[0064] Clean the anaerobic bottle 120 with a volume of 500mL, and put 200mL of kitchen waste and 50mL of anaerobic sludge in the initial stage of the anaerobic bottle 120, and then add citric acid chelation according to the dosage of 0.64mg / gVS iron, and then pass nitrogen gas in the anaerobic bottle 120 for 8 minutes, and then seal it with a rubber stopper.

[0065] The material in the anaerobic bottle 120 is heated and stirred with a magnetic stirrer 140, the heating temperature of the water bath is 34.5°C, and the rotatio...

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Abstract

The invention discloses a device and a method for improving the anaerobic methanogenesis of kitchen garbage, and mainly relates to the technical field of the treatment of organic solid waste. According to the method, through throwing green and environment-friendly chelated iron citrate into an anaerobic bottle for the kitchen garbage to carry out an anaerobic digestion reaction, the yield of a biogenic gas produced by the reaction is improved by a wide margin; moreover, the corresponding rate and relative content of methane are also increased. In addition, the device for improving the anaerobic methanogenesis of the kitchen garbage is designed in a matching manner based on the method for improving the anaerobic methanogenesis of the kitchen garbage, is simple in structure and convenient and reliable to use, and can be used for guaranteeing that the anaerobic digestion reaction is normally carried out; therefore, the device and the method for improving the anaerobic methanogenesis of the kitchen garbage can be used for effectively improving the yield of the biogenic gas and the relative yield productive rate of the methane; the resource utilization of the kitchen garbage is realizedand moreover, the device and the method also have the advantages of energy-saving and environment-friendly and therefore have important popularization and application value.

Description

technical field [0001] The invention relates to the technical field of organic solid waste treatment, in particular to a device and method for improving anaerobic methane production of kitchen waste. Background technique [0002] In recent years, with the continuous improvement of people's living standards, the output of food waste in my country has increased rapidly from 90 million tons in 2011 to 163.5 million tons in 2016. The content of organic dry matter in kitchen waste is as high as 97%, which is perishable, deteriorated, smelly, and breeds mosquitoes and flies. In addition, there are pathogenic bacteria and pathogenic microorganisms in kitchen waste. If they are not handled properly, they will cause harm to the environment and health, and restrict the sustainable and harmonious development of economy and society. [0003] The anaerobic digestion process has the advantages of low carbon emissions, low energy consumption, and recyclable renewable energy, and is widely...

Claims

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Application Information

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IPC IPC(8): C12P5/02C12M1/107C12M1/24C12M1/02
CPCC12M21/04C12M23/08C12M23/36C12M27/02C12P5/023Y02E50/30
Inventor 刘亚利钟婷婷刘亚君荆肇乾杨灿王祝来
Owner NANJING FORESTRY UNIV
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