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A kind of aerobic fermentation treatment process of kitchen waste based on regulating moisture form

A technology of aerobic fermentation and kitchen waste, applied in organic fertilizers, climate change adaptation, etc., can solve the problems of microbial activity inhibition, hindering gas mass transfer, unfavorable decomposition and humification of organic matter, and achieve the effect of improving efficiency

Active Publication Date: 2015-08-05
ZHEJIANG GONGSHANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of aerobic fermentation, water content is one of the key control factors. Too high water content will hinder the mass transfer of gas in the aerobic fermentation system, so that the aerobic fermentation system tends to be anaerobic; too low water content It will inhibit the activity of microorganisms in the system, which is not conducive to the decomposition and humification of organic matter
[0004] The water content will continue to decrease during the aerobic fermentation process. In order to keep the water content of the system in an appropriate range, it is usually achieved by supplementing water from an external source. However, water content is required during the storage, transportation and use of aerobic fermentation products. The rate is kept at a low level, so this part of the water added by external sources needs to be removed in the later stage of aerobic fermentation, which virtually increases the cost of aerobic fermentation

Method used

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  • A kind of aerobic fermentation treatment process of kitchen waste based on regulating moisture form
  • A kind of aerobic fermentation treatment process of kitchen waste based on regulating moisture form

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Experimental program
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Effect test

Embodiment 1

[0030] Raw materials for aerobic fermentation of kitchen waste: 12 kg of kitchen waste (moisture content 73.90±0.69%) and 6 kg of air-dried waste food materials (moisture content 12.85±0.22%) were taken from a canteen of a university in Hangzhou.

[0031] Take the supernatant after leaching kitchen waste and inoculate it into the inorganic salt medium with one of starch, glucose and protein as the carbon source, and screen out the bacterial groups with the function of degrading starch, glucose and protein respectively. The three types of bacteria were mixed and cultured in LB medium to obtain the desired bacteria solution.

[0032] Crush the above-mentioned kitchen waste and air-dried waste materials into a particle size of 5cm, then mix thoroughly, and add 18ml at a concentration of 1×10 15 CFU / mL bacterial solution, and adjust the water content to 60%, and finally divide the mixed material into three equal parts.

[0033] The first part of the material is directly put into ...

Embodiment 2

[0039] Raw materials for aerobic fermentation of kitchen waste: kitchen waste and discarded ingredients were taken from a canteen of a university in Hangzhou.

[0040] Kitchen waste and waste food materials are moderately air-dried, and the moisture content is maintained at about 60% after moderate air-drying. The total cellulose of kitchen waste accounts for 16.84% of the dry weight, and the total cellulose of waste food materials accounts for 25.11% of the dry weight.

[0041] Take the supernatant after leaching kitchen waste and inoculate it into the inorganic salt medium with one of starch, glucose and protein as the carbon source, and screen out the bacterial groups with the function of degrading starch, glucose and protein respectively. The three types of bacteria were mixed and cultured in LB medium to obtain the desired bacteria solution.

[0042]There are 5 sets of treatments, namely treatment 1 (100% waste food + 0% kitchen waste), treatment 2 (75% waste food + 25% k...

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Abstract

The invention discloses a kitchen waste aerobic fermentation treatment process based on the regulation and control of moisture forms. The kitchen waste aerobic fermentation treatment process comprises the following steps; (1) collecting kitchen waste, separating oil from water, removing impurities and crushing to obtain crushed kitchen waste; (2) regulating the moisture content of the crushed kitchen waste to be 50 to 75 percent, mixing the crushed kitchen waste and an aerobic fermentation bacteria agent, performing aerobic fermentation, adjusting the content of the total cellulose of an aerobic fermentation system before aerobic fermentation is started to be 15 to 25 percent, or adding a water-retaining agent into the aerobic fermentation system to realize the regulation and control of the moisture forms in the kitchen waste aerobic fermentation system. According to the kitchen waste aerobic fermentation treatment process based on the regulation and control of the moisture forms, the efficiency of the kitchen waste aerobic fermentation is improved by the regulation and control of the moisture forms in the kitchen waste aerobic fermentation system.

Description

technical field [0001] The invention relates to the technical field of aerobic fermentation of organic waste, in particular to an aerobic fermentation treatment process of kitchen waste based on regulating water form. Background technique [0002] Kitchen waste is a kind of organic waste, including leftovers, leftovers, vegetable leaves, fruit peels, eggshells, tea residues, bones, etc. [0003] As a kind of organic waste, kitchen waste is rich in organic matter. In the actual treatment and disposal process, aerobic fermentation technology is often used to recycle kitchen waste. In the process of aerobic fermentation, water content is one of the key controlling factors. Excessively high water content will hinder the mass transfer of gas in the aerobic fermentation system, thus making the aerobic fermentation system tend to be anaerobic; too low water content It will inhibit the activity of microorganisms in the system, which is not conducive to the decomposition and humific...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05F9/04
CPCY02A40/20
Inventor 龙於洋杨煜强王坤叶凌丽沈东升冯华军申屠佳丽汪美贞殷峻周玉央李娜
Owner ZHEJIANG GONGSHANG UNIVERSITY