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Method for preparing earthworm culture medium from kitchen waste

A technology of food waste and culture medium, applied in the field of aquaculture, can solve the problems of high cost and technical requirements, unsuitable for industrialization and large-scale application of waste treatment, and achieve the effect of long storage time and convenient transportation

Inactive Publication Date: 2012-09-26
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many methods of biotransformation, such as biological fermentation hydrogen production, biological fermentation methane production, biogas power generation, biological high-temperature aerobic reduction technology, etc. Many of the above technologies are still in the experimental research stage, and the cost and technical requirements are high. Not suitable for industrialization and large-scale application of waste treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for preparing earthworm culture medium from kitchen waste, comprising the following steps:

[0031] (1) Preparation of dry food waste powder: the collected food waste is manually sorted to remove large bones, plastic bags, paper towels, toothpicks and bamboo chopsticks; then rinse with water to reduce its salinity and remove part of the fat Oils; the washed kitchen waste is placed in a pulverizer to pulverize (the particle diameter is about 1-5mm), then dried and mixed uniformly to obtain a dry kitchen waste powder;

[0032] The obtained dry food waste powder has a salinity of 0.5%, a crude fat content of 6.5%, and a moisture content of 11.2%;

[0033] (2) Mix 56% by mass of food waste dry powder, 24% by mass of cow dung, and 20% by mass of bagasse, and stack the mixture in the air at 20°C for fermentation. After 25 days, take a small amount of the mixture for testing and find that the mixture The pH value is 7.9, the C / N is 18.93, the fermentation is stopped,...

Embodiment 2

[0037] A method for preparing earthworm culture medium from kitchen waste, comprising the following steps:

[0038] (1) Preparation of dry food waste powder: the collected food waste is manually sorted to remove large bones, plastic bags, paper towels, toothpicks and bamboo chopsticks; then rinse with water to reduce its salinity and remove part of the fat Oils; the washed kitchen waste is placed in a pulverizer to pulverize (the particle diameter is about 1-5mm), then dried and mixed uniformly to obtain a dry kitchen waste powder;

[0039] The obtained dry food waste powder has a salinity of 0.58%, a crude fat content of 6%, and a dry powder water content of 11%;

[0040] (2) Mix 42% by mass of food waste dry powder, 18% by mass of cow dung, and 40% by mass of bagasse, and stack the mixture in the air at 35°C for fermentation. After 20 days, take a small amount of the mixture for testing and find that the mixture The pH value is 8.1, the C / N is 17.65, the fermentation is sto...

Embodiment 3

[0044] A method for preparing earthworm culture medium from kitchen waste, comprising the following steps:

[0045] (1) Preparation of dry food waste powder: the collected food waste is manually sorted to remove large bones, plastic bags, paper towels, toothpicks and bamboo chopsticks; then rinse with water to reduce its salinity and remove part of the fat Oils; the washed kitchen waste is placed in a pulverizer to pulverize (the particle diameter is about 1-5mm), then dried and mixed uniformly to obtain a dry kitchen waste powder;

[0046] The obtained dry food waste powder has a salinity of 0.52%, a crude fat content of 6.8%, and a moisture content of 10.9%;

[0047](2) Mix 62% by mass of food waste dry powder, 18% by mass of cow dung, and 20% by mass of bagasse, and stack the mixture in the air at 15°C for fermentation. After 30 days, take a small amount of the mixture for testing and find that the mixture The pH value is 7.6, the C / N is 19.87, the fermentation is stopped,...

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PUM

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Abstract

The invention discloses a method for preparing an earthworm culture medium from kitchen waste, which comprises the following steps of: (1) washing the collected kitchen waste with water, crushing, drying, and uniformly mixing to obtain dry kitchen waste powder; and (2) mixing 42 to 62 percent of dry kitchen waste powder, 18 to 24 percent of cow dung and 20 to 40 percent of bagasse, stacking the mixture at the temperature of between 15 and 35DEG C for fermentation, detecting the mixture after 20 to 30 days, and stopping fermentation when the pH value of the mixture is 7.6 to 8.1 and the ratio of carbon / nitrogen (C / N) is less than 20 to obtain the earthworm culture medium. In the method, the kitchen waste is prepared into dry powder to fulfill the aims of facilitating transportation, not rotting and having long storage time, and the kitchen waste is subjected to further treatment easily; in addition, the cow dung and the bagasse are added into the kitchen waste for preparing the earthworm culture medium, so that the kitchen waste is efficiently treated, the agricultural waste is recycled, and the two purposes are achieved.

Description

technical field [0001] The invention belongs to the field of aquaculture, and in particular relates to a method for preparing earthworm culture medium from kitchen waste. Background technique [0002] Earthworm is a scavenging animal with strong ability to decompose organic matter. It has high protein content and outstanding medicinal value, so it is favored by people. [0003] At present, at home and abroad, biogas slurry or compost fermentation is mainly used to make culture medium to raise earthworms, but the source of these medium base materials is very limited, which limits the large-scale development of earthworm artificial breeding. Domestic waste, especially kitchen waste, has a high content of organic matter and can be used to raise earthworms after proper treatment. [0004] According to statistics, China's per capita annual garbage output is more than 440Kg, and China's annual garbage output exceeds 600 million tons. At present, there is no effective garbage disp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K67/033A23K1/10A23K1/18A23K10/26A23K10/37A23K50/90
CPCY02P60/87
Inventor 马广智牛晨蕾芦双黄儒强陈孔亮潘淦林盛张璋虞为彭乐武佳韵陈世文张涛郭文康梁学世陈纯纯高艳明赵盼盼黄陈玲
Owner SOUTH CHINA NORMAL UNIVERSITY
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