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Method for digesting biogas residues from kitchen waste biogas projects by cockroaches

A technology for kitchen waste and cockroach, which is applied in the field of production of feed or feed additives and organic fertilizers, can solve the problems of secondary pollution and disposal of biogas residue flow, adverse effects on compost quality, difficulty in aerobic composting and deodorization, etc. Broad commercial application prospects, achieving harmless, low-cost effects

Inactive Publication Date: 2019-06-21
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still many bottlenecks or defects in this biogas residue treatment technology: one is the deodorization problem in aerobic composting
Second, the food waste biogas residue contains a small amount of salt and oil, which will adversely affect the quality of compost
[0011] Therefore, it is necessary to address the defects of the above methods. The patent of the present invention efficiently realizes the harmlessness, reduction and resource utilization of food waste biogas; Secondary Pollution and Disposal Issues

Method used

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  • Method for digesting biogas residues from kitchen waste biogas projects by cockroaches
  • Method for digesting biogas residues from kitchen waste biogas projects by cockroaches

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Collect food waste biogas residues and feed them to Blattella germanica. The moisture content of the biogas residues is 75.0%, the pH is 7.2, and the biogas residues (dry basis) contain 32.1% protein, 23.4% cellulose, 2.4% fat, 15.2% ash, and nitrogen-free The extract is 26.9%. In the biotransformation (consumption) chamber, vertical septum cultivation frames are adopted, and the number of partitions per meter is about 90. In the single-layer transformation chamber, 3.0 × 10 german cockroaches are raised per square meter. 6 Only, the temperature of the transformation room is controlled at 26°C to 32°C, and the air humidity is adjusted at 70% to 80%. Under these conditions, the average daily consumption of food waste biogas residue by German cockroaches is 11% of the total weight of German cockroaches in the transformation room. Feed under these conditions for 3 months, and collect the German cockroach body, ootheca and feces in the transformation room.

[0040] On avera...

Embodiment 2

[0042] Collect food waste biogas residue to feed Periplaneta americana. The moisture content of the biogas residue is 77.4%, the pH is 7.0, and the biogas residue (dry basis) contains 35.0% protein, 21.5% cellulose, 0.9% fat, 16.0% ash, nitrogen-free Extract 26.6%, adopt vertical partition culture frame in the biotransformation (consumption) room, the number of partitions per meter is about 90, in the single-layer transformation room, per square meter raises Periplaneta americana 9.0 * 10 4 Only, the temperature of the transformation room is controlled at 25°C to 30°C, and the air humidity is adjusted to 80% to 86%. Under these conditions, the average daily consumption of food waste biogas residue by Periplaneta americana is 13% of the total weight of Periplaneta americana in the transformation room. After feeding under these conditions for 3 months, collect the Periplaneta americana body, ootheca and feces in the transformation room.

[0043] On average, about 120kg of dried ...

Embodiment 3

[0045] Collect food waste biogas residue to feed Periplaneta americana, the moisture content of biogas residue is 73.0%, pH is 6.9, biogas residue (dry basis) should contain protein 40.4%, cellulose 15.5%, fat 0.5%, ash content 15.3%, no Nitrogen extract 28.3%, in the biotransformation (consumption) room, adopt vertical partition culture frame, the number of partitions per meter is about 90, in the single-layer transformation room, per square meter raises Periplaneta americana 1.0 * 10 5 Only, the temperature of the transformation room is controlled at 25°C to 30°C, and the humidity is controlled at 80% to 85%. Under these conditions, they were fed for 3 months, and the bodies of Periplaneta americana, ootheca and feces in the transformation room were collected.

[0046] On average, about 132kg of dried worms and ootheca and 96kg of feces of Periplaneta americana can be obtained by processing 1 ton of food waste biogas residue, or the worms and ootheca can be killed, dried and...

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Abstract

The invention belongs to the field of environmental protection, and relates to a method for digesting biogas residues from kitchen waste biogas projects by cockroaches and producing feed or feed additives and organic fertilizer. The method comprises the following steps: (1), collecting the biogas residues of kitchen wastes from anaerobic digestion, namely, biogas projects; (2), feeding the biogasresidues in the step (1) to cockroaches; (3), capturing and killing the cockroaches, collecting dead cockroach bodies, and performing sterilization and / or virus inactivation treatment to obtain livestock feed or feed additives; (4), collecting cockroach excrement produced in the step (2) for composting to obtain high-quality organic fertilizer. By high digestion and reproduction capability of thecockroaches, not only can the problem about treatment of the biogas residues from the kitchen waste biogas projects be solved, but also livestock feed or feed additives and organic fertilizer can be produced. Besides, by bioconversion of the biogas residues from the kitchen waste biogas projects by the cockroaches, in-situ utilization of bio-heat can be realized, and no secondary pollutants such as waste water, waste gas and waste residues are produced in the digestion process.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a method for using cockroaches to absorb food waste biogas engineering residues and produce feed or feed additives and organic fertilizers. Background technique [0002] Food waste as defined in the national "Technical Specifications for Food Waste Treatment" is a general term for food waste and kitchen waste, which refers to food leftovers such as restaurants, restaurants, unit canteens, and family daily life, as well as food scraps, leftovers, and meat. , oil, vegetables, fruits, etc. are the main components of municipal solid waste, which have the characteristics of high moisture content, high proportion of organic matter, high salt content, and easy biochemical degradation. With the acceleration of urbanization and the steady improvement of people's living standards, the annual production of kitchen waste in my country is about 9.8×10 7 tons, the disposal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/02C05F3/00A01K67/033A23K10/12A23K10/26A23K50/90
CPCY02A40/20
Inventor 张记市臧立华赵文谦
Owner QILU UNIV OF TECH
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