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Harmless minimization bio-treatment method for organic waste

A technology for organic waste and biological treatment, applied in the direction of solid waste removal, etc., can solve the problems of microbial death, reduce the decomposition efficiency of organic waste, etc., and achieve the effect of short processing time and high efficiency

Active Publication Date: 2015-01-21
ANHUI LEVEKING BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN101709006 discloses a biological method for treating solid organic waste. The method is to add a mixed bacterial solution composed of various bacillus, enzyme preparations and auxiliary materials to the organic waste, and control the temperature by stirring and hot air. Fermentation treatment is carried out by a staged heating method. This method uses a combination of microbial decomposition and biological enzyme decomposition to treat organic waste, but directly mixes the bacterial liquid and enzyme preparation into the organic waste. The protease and fat in the enzyme preparation Enzymes, cellulase, pectinase, etc. will cause damage to microorganisms in the bacterial liquid, that is, these enzymes will decompose the cell wall and cell membrane of microorganisms, resulting in the death of microorganisms, thus greatly reducing the decomposition efficiency of organic waste

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) The food waste in the canteen is first filtered to separate the oil and water, and 100kg of the food waste obtained after separating the oil and water is added to the food waste treatment equipment. Enzyme, 0.25kg of rhamnolipid fermentation liquid, the food waste, compound enzyme and rhamnolipid fermentation liquid are stirred evenly by the stirring device of the food waste treatment equipment, and the food waste is pretreated for 3 hours; wherein, the fat The enzyme activity is 10000U / g, the protease activity is 10000U / g, the amylase activity is 10000U / g, and the cellulase activity is 10000U / g.

[0025] (2) Start the constant temperature heating device of the food waste treatment equipment to raise the temperature of the materials in the food waste treatment equipment to 60°C and keep the temperature constant. At this temperature, the previously added biological enzymes are rapidly inactivated.

[0026](3) Add 2g of microbial agents consisting of Bacillus megater...

Embodiment 2

[0029] (1) The food waste in the canteen is first filtered to separate the oil and water, and 200kg of the food waste obtained after separating the oil and water is added to the food waste treatment equipment. Enzyme, add 0.6kg of rhamnolipid fermentation liquid, stir the food waste, compound enzyme and rhamnolipid fermentation liquid evenly by the stirring device of the food waste treatment equipment, and pretreat the food waste for 3 hours; wherein, The enzyme activity of lipase is 10000U / g, that of protease is 10000U / g, that of amylase is 10000U / g, and that of cellulase is 10000U / g.

[0030] (2) Start the constant temperature heating device of the food waste treatment equipment to raise the temperature of the materials in the food waste treatment equipment to 60°C and keep the temperature constant. At this temperature, the previously added biological enzymes are rapidly inactivated.

[0031] (3) Put 4g of microbial inoculum consisting of Bacillus megaterium, Bacillus subti...

Embodiment 3

[0034] (1) The food waste in the canteen is first filtered to separate oil and water, and 300kg of food waste obtained after separating oil and water is added to the food waste treatment equipment, and at the same time, 5kg of compound compound composed of lipase, protease, amylase and cellulase is added Enzyme, add 1.5kg of rhamnolipid fermentation liquid, stir the food waste, compound enzyme and rhamnolipid fermentation liquid evenly by the stirring device of the food waste treatment equipment, and pretreat the food waste for 3 hours; wherein, The enzyme activity of lipase is 10000U / g, that of protease is 10000U / g, that of amylase is 10000U / g, and that of cellulase is 10000U / g.

[0035] (2) Start the constant temperature heating device of the food waste treatment equipment to raise the temperature of the materials in the food waste treatment equipment to 60°C and keep the temperature constant. At this temperature, the previously added biological enzymes are rapidly inactivat...

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Abstract

The invention discloses a harmless minimization bio-treatment method for organic waste. The method comprises the following steps: (1) adding a complex enzyme for pre-treatment of the organic waste; (2) heating for inactivating the complex enzyme; and (3) adding a microbial agent for after-treatment of the organic waste. The method of the invention performs the treatments of decomposing the organic waste with bio-enzymes and decomposing the organic waste with microorganisms separately. After the organic waste is decomposed by the bio-enzymes, the enzymes are inactivated by heating, and then the microbial agent is added to decompose the organic waste, thereby avoiding the situation that the bio-enzymes destroy the microorganisms when the bio-enzymes and the microbial agent are mixed. The method has short treatment time for organic waste and high efficiency. The weight of the organic waste is decreased by 85%-90%. The treated residue is pale brown, scentless and can be used as fuel, feedstuff or raw material for organic fertilizer.

Description

technical field [0001] The invention relates to the technical field of organic waste treatment, in particular to a method for harmless and reduction treatment of organic waste by using microorganisms and biological enzymes. Background technique [0002] Food waste is the most important type of organic waste, including food processing leftovers (kitchen waste) and food residues (swill) produced by families, schools, canteens and catering industries. Its composition is complex, mainly oil, water , fruit peels, vegetables, rice noodles, fish, meat, bones, and waste tableware, plastic, paper towels and other substances. Organic waste has obvious hazards and duality of resources, and its characteristics can be summarized as follows: (1) Some organic wastes have a high moisture content, such as kitchen waste, which can reach 80% to 95%; (2) High organic matter content, containing a large amount of Protein, cellulose, starch, fat, etc.; (3) Rich in nitrogen, phosphorus, potassium,...

Claims

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Application Information

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IPC IPC(8): B09B3/00
Inventor 王剑英林智贾佳聂新华
Owner ANHUI LEVEKING BIOTECH CO LTD
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