Method for biologically converting silkworm excrement waste by utilizing fly maggots, and application of product of method

A technology of biotransformation and waste, applied in the fields of application, climate change adaptation, bio-organic part treatment, etc., to achieve thorough treatment, short treatment cycle, and widen raw material channels

Active Publication Date: 2022-01-21
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Technical problem to be solved: In order to overcome the deficiencies of the existing technology and obtain a method for efficient and large-scale treatment of silkworm excrement waste, while eliminating the pollution of silkworm excrement waste, obtain Agricultural organic fertilizer and feed for livestock and poultry breeding, in view of this, the present invention provides a method for utilizing fly maggots to biotransform silkworm excrement waste and its product application

Method used

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  • Method for biologically converting silkworm excrement waste by utilizing fly maggots, and application of product of method
  • Method for biologically converting silkworm excrement waste by utilizing fly maggots, and application of product of method
  • Method for biologically converting silkworm excrement waste by utilizing fly maggots, and application of product of method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: High-efficiency large-scale housefly species breeding method

[0028] Collection of fly species and clean breeding and domestication: collect local wild houseflies, place them in 80cm×40cm×40cm stainless steel clean large mesh cages after biological identification, and feed adult flies with a 1:1 mixture of milk powder and white sugar powder. The larvae are cultured with a 1:2 mixture of wheat bran and silkworm excrement. The room temperature is controlled at 20°C-30°C, the relative humidity is at 70%±10%, the light rhythm is based on the local environment, and the humidity of the wheat bran egg collection is at 65%. On the fifth day, the 3rd instar larvae with larger body weight and higher activity were collected to pupate in wheat bran with 20% water content, and then the larger fly pupae were selected and placed in clean breeding cages to emerge as flies. The mixture of milk powder and white sugar powder is used to raise eggs and enter the next clean fe...

Embodiment 2

[0034] Example 2: Efficient large-scale fly maggot biotransformation silkworm excrement degradation cellulose system

[0035] This embodiment is a method for harmless treatment of silkworm excrement by using fly maggots to accelerate the degradation of silkworm excrement cellulose. For large-scale sericulture breeding bases, the hardware facilities are planned first. In this embodiment, the collected silkworm excrement waste can be directly used for fly maggot biotransformation after pretreatment, and the humidity of the silkworm excrement matrix is ​​controlled between 60%±10% through pretreatment.

[0036] Since silkworm excrement is rich in cellulose, the degradation rate of cellulose is the main factor affecting the biotransformation efficiency of fly maggots. Therefore, it is necessary to screen the optimal ratio (mass ratio) of silkworm excrement and wheat bran mixed matrix to determine which is suitable for the growth and development of fly maggots. It can also efficien...

Embodiment 3

[0040] Embodiment 3: Effect of fly maggot protein feed on growth performance of broiler chickens

[0041] The fly maggots treated for 4 days in Example 2 were separated from feces, and the separated fly maggot larvae were rinsed three times with water, filtered and dried, and stored at -20°C for later use.

[0042] Preparation of fly maggot powder: thaw fly maggots stored at -20°C, dry at 50°C for 24 hours, crush the dried fly maggots with a homogenizer, pass through a 40-mesh sieve, seal, and store at -20°C for later use.

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Abstract

The invention discloses a method for biologically converting silkworm excrement waste by utilizing fly maggots, and application of a product of the method. The method comprises the following steps: breeding and domesticating fly species, pretreating the silkworm excrement waste, performing bioconversion treatment, and separating and applying the treated product. Compared with the prior art, the method has the following advantages: (1) the silkworm excrement waste is pretreated to adjust the water content of the silkworm excrement waste, so that normal growth and function exertion of fly maggots in the substrate are ensured; (2) the method effectively treats silkworm excrement by-product resources generated in the silkworm and mulberry industry, the obtained silkworm excrement conforms to the regulation of national standard organic fertilizer, efficient cyclic utilization of waste silkworm excrement can be realized, and waste is turned into wealth; and (3) the method utilizes fly maggots to efficiently convert silkworm excrement waste on a large scale, the treatment period is short and is far shorter than 16 days of composting with a microbial agent and 30 days of traditional composting, the conversion efficiency is high, the pollution is zero, the treatment is thorough, the industrial chain is long, and the economic, social and ecological benefits are remarkable.

Description

technical field [0001] The invention belongs to the technical field of biological waste treatment, and relates to a harmless and large-scale treatment method, in particular to a method for using fly maggots to biotransform silkworm excrement waste and the application of the product. Background technique [0002] While sericulture production brings significant economic benefits, it also produces a large number of sericulture by-product resources, the most common of which is silkworm excrement (feces discharged by silkworms and residual mulberry leftovers). The data shows that: on average, 3.3 tons of silkworm excrement will be produced for every 1 ton of silkworm cocoons produced, which means that my country produces about 3 million tons of silkworm excrement every year. In recent years, with the gradual improvement of the intensive level of sericulture in my country, the output of silkworm excrement is also increasing day by day. However, for a long time, due to the lack of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F3/00C05F17/05A01K67/033A23K10/20
CPCC05F3/00C05F17/05A01K67/033A23K10/20Y02A40/20Y02W30/40Y02P60/87
Inventor 李豪桂仲争徐雪明张敏琪张然辛向东李解
Owner JIANGSU UNIV OF SCI & TECH
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