Treatment method for fermentation of kitchen waste into fertilizer

A food waste and treatment method technology, applied in the direction of organic fertilizers, climate change adaptation, etc., can solve the problems of large gas resistance, unfavorable crops, garbage content, etc., and achieve small pungent smell, good promotion effect, and low oil content Effect

Inactive Publication Date: 2013-10-02
SERICULTURE & AGRI FOOD RES INST GUANGDONG ACAD OF AGRI SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the main problem of household kitchen waste processors is that the waste contains a lot of salt and oil, and the fertilizer produced by fermentation has adverse effects on crops.
At the same time, the peculiar smell produced by the kitchen waste disposal machine affects the use of kitchen waste treatment equipment in the family.
[0007] The existing adsorption devices are installed at the exhaust outlet of the kitchen waste disposer, and most of them use activated carbon as the adsorbent. However, activated carbon alone has a large resistance to gas, and the gas is not easy to pass through. Some existing devices need to add an exhaust fan to use them. Gas passes through the adsorbent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Microbial agent preparation, in slant medium (medium formula: NaCl 5.0 g, KH 2 PO 4 0.3 g, MgSO 4 .7HO 2 0.1 g, K 2 HPO 4 0.3 g, (NH4) 2 SO 4 1.0 g, olive oil 10ml, agar 17-20g, water 1000ml. ) was inoculated with Acinetobacter calcoaceticus strain B40, cultured for 2 days and then placed in the refrigerator.

[0027] Install an adsorption device on the exhaust port of the household kitchen waste disposer (produced by Shenzhen Dagong Machinery and Electronics Co., Ltd., with a processing capacity of 4kg / day). The inner diameter of the adsorption device is 25mm and the length is 10cm. Add 25 grams of adsorbent (the adsorbent contains rice bran) 18.5 grams, wood chips 5 grams, activated carbon 1.5 grams).

[0028] Add about 2kg of food waste into the food waste disposer, add tap water to the slant culture medium to wash Acinetobacter calcoaceticus strain B40 on the food waste, set the working temperature to 55°C, and obtain 300g of biological fertilizer after ...

Embodiment 2

[0030] Microbial agent preparation, in slant medium (medium formula: NaCl 5.0 g, KH 2 PO 4 0.3 g, MgSO 4 .7HO 2 0.1 g, K 2 HPO 4 0.3 g, (NH4) 2 SO 41.0 g, 10 ml of olive oil, 17-20 g of agar, 1000 ml of water) were inoculated with Acinetobacter calcoaceticus strain B40. After 2 days of cultivation, they were inoculated into a 30L fermenter, and the fermenter was filled with 20L of medium (the formula of the medium was 100 g of NaCl, K H 2 PO 4 30 g, MgSO 4 .7HO 2 10 g, K 2 HPO 4 30 g, (NH4) 2 SO 4 100 g, olive oil 1000ml) at a fermentation temperature of 50°C and a ventilation rate of 2L / min. After 2 days of fermentation, the bacterial cells were separated by centrifugation, and 40g of the obtained sludge was mixed with 200g of sawdust, and dried at 50°C for later use.

[0031] Install an adsorption device on the exhaust port of the kitchen waste disposal machine (produced by Shenzhen Dagong Machinery Electronics Co., Ltd., with a processing capacity of 10...

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PUM

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Abstract

The invention relates to a treatment method for fermentation of kitchen waste into a fertilizer. The method mainly improves the treatment effects of a kitchen waste treatment machine from two aspects, and ferments kitchen waste to produce a bio-fertilizer. The method includes: (1) artificially adding Acinetobacter calcoaceticus strain B40 in a kitchen waste treatment process, with the adding amount reaching over 10<5>CFU per gram of kitchen waste; and (2) employing a composite adsorbing material to adsorb pungent smell generated in the fermentation process. The composite adsorbing material is composed of rice bran, sawdust and activated carbon in a ratio of 10-20:3-5:1. The bio-fertilizer produced by the method has the characteristics of low oil content and small pungent smell during production.

Description

technical field [0001] The invention belongs to the field of microbial fermentation, and in particular relates to a method for producing biological fertilizer by fermentation of kitchen waste. Background technique [0002] Kitchen waste is the main component of garbage, and the total amount of garbage has accounted for about 30% to 40% of municipal solid waste. Food waste is one of the main causes of bad smell, breeding of mosquitoes and flies, disease transmission, underground water source and environmental pollution. Food waste contains a lot of leftover soup, rancid water, etc., which are easy to cause pollution during garbage collection and transportation At the same time, it is also the main source of leachate from landfills. At present, a large part of food waste is used to feed pigs and other livestock and poultry. When used to feed pigs and other animals, the internal organs of pigs are prone to pathological changes, which will cause harm to people's health. It can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F9/04
CPCY02A40/20
Inventor 徐玉娟吴继军余元善唐道邦高云超李俊
Owner SERICULTURE & AGRI FOOD RES INST GUANGDONG ACAD OF AGRI SCI
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