Biological treatment process of kitchen waste

A technology for the biological treatment of food waste, which is applied in the technical field of biological treatment of food waste, can solve the problems of poor practicability and increased treatment costs, etc.

Inactive Publication Date: 2016-05-25
深圳市腾浪再生资源发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent application number 2014102429308 introduces a device for breeding black soldier flies by eating kitchen waste, which has poor practicability
CN102350433A introduces a process for processing food waste by black soldier flies, which is essentially a device, and a large amount of auxiliary materials need to be added in the processing process (the ratio of food waste: auxiliary materials is 1: (0.25~1). processing cost

Method used

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  • Biological treatment process of kitchen waste

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Effect test

Embodiment 1

[0016] 100 kg of kitchen waste, sorting out large pieces of inorganic materials. Extruded and dehydrated, the weight of the material after extrusion is 55 kg. Put the material into the culture tray and spray 100ml of lactic acid bacteria or yeast. Insert 30,000 2nd instar black soldier fly larvae into the rearing tray. The thickness of the nourishing material is 10cm. The rearing tray inoculated with black soldier fly larvae was placed in an environment with a temperature of 30°C and a humidity of 55% to raise the larvae. The larvae are raised for 6-8 days, and the rearing material has been basically digested to form pellets mainly composed of larval excrement. All the materials were moved to the sieve for screening, and 13.8 kg of larvae and 11 kg of organic fertilizer were isolated. The larva body was dried and pulverized to obtain 4.31 kg of insect protein powder.

Embodiment 2

[0018] 200 kg of kitchen waste, sorting out large pieces of inorganic materials. Extruded and dehydrated, the material weighs 125 kg after extrusion. Put the material into the culture tray and spray 300ml of lactic acid bacteria or yeast. Insert 80,000 2-instar Chrysocephala larvae into the rearing tray. The thickness of the nourishing material is 15cm. Place the culture tray inoculated with Chrysocephala larvae in an environment with a temperature of 33° C. and a humidity of 65% to raise the larvae. Chrysocephala larvae are raised for 6-8 days, and the rearing material has been basically digested to form granular material mainly composed of larval excrement. All materials are moved to the sieve for screening, and 19.5 kg of larvae and 27 kg of organic fertilizers are separated. The larva body was dried and pulverized to obtain 4.88 kg of insect protein powder.

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Abstract

The invention provides a biological treatment process of kitchen waste. The process comprises the following steps: (1) inorganic substances in the kitchen waste which cannot be degraded are sorted, moisture is squeezed by extrusion, grinding is carried out or not, and a nourishing material is formed; (2) larvae which are carried out by biological treatment are inoculated into the nourishing material, the larvae digest the kitchen waste for 6-8 days, the kitchen waste is transformed, and the material becomes a mature material; (3) the mature material is screened, in order to obtain living larva bait and larva excreta as well as materials which are not digested; (4) the living larva is further dried and crushed, in order to obtain insect protein powder; (5) the larva excreta and the materials which are not digested are used as an organic fertilizer.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a process for biological treatment of kitchen waste. Background technique [0002] Among the existing kitchen waste treatment methods, there are anaerobic fermentation biogas method, composting method, and fermented feed method. The anaerobic fermentation method of methanobacteria has low gas production rate, low conversion rate of organic matter, large investment and low economic benefit. The composting method occupies a large area, and it is easy to grow bacteria and mosquitoes, and it is easy to cause secondary pollution of odor. The product application of the fermented feed method is limited, and the energy consumption is high. The above method has certain defects in practical application. [0003] Biological treatment of kitchen waste is a method with low investment, high benefit and easy promotion. . CN102350433A and patent application No. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00B09B5/00
Inventor 吴伟浩刘德江陈智荣周姗姗张琦
Owner 深圳市腾浪再生资源发展有限公司
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