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Food waste composting method and rural waste classification method using same

A technology of food waste and composting method, which is applied to the treatment of biological organic parts, invertebrate treatment, combined biological treatment, etc., can solve the problems of large area, long time, complicated methods, etc., to solve the problem of disposal, Solve the effect of long time and short composting cycle

Active Publication Date: 2017-12-01
CHONGQING SAGE RENEWABLE RESOURCES UTILIZATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the method of garbage classification is relatively complicated, and most of them are based on garbage classification, namely: recyclables, kitchen waste, other garbage, and harmful garbage
However, the components of township garbage are different from urban garbage. There are very few recyclables in township garbage, such as plastic bottles, and most of them are picked out by scavengers, and the complicated classification methods are difficult for township residents to accept and implement.
[0004] At present, in waste sorting work, it is common to use organic waste for composting and combustible waste for making RDF fuel; currently used composting methods include aerobic composting, earthworm composting and other composting methods, but aerobic composting The fertilizer efficiency is poor, and the concentration of chloride ions is too high. Vermicomposting uses earthworms to devour and decompose organic matter to form organic fertilizer. The fertilizer efficiency is good, but it occupies a large area and takes a long time.

Method used

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  • Food waste composting method and rural waste classification method using same
  • Food waste composting method and rural waste classification method using same
  • Food waste composting method and rural waste classification method using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] a. Garbage pretreatment: crush the collected kitchen waste, mix it with the crushed straw at a dry weight ratio of 1:1, adjust the moisture content to 50%, and adjust the carbon-nitrogen ratio to 25:1;

[0064] b. Primary fermentation: first lay a layer of unbroken straw on the bottom of the fermentation tank, spread the adjusted food waste on the straw, and finally cover the crushed food waste with a layer of semi-decomposed waste; after 3 days of fermentation, Let the temperature reach 50°C-60°C, then maintain it for 5 days, and complete the first fermentation;

[0065] c. Secondary fermentation: adjust the pH value of the primary fermentation product to 7, adjust the moisture to 65%, adjust the carbon-to-nitrogen ratio to 30, add soil and fresh kitchen waste, the quality of the primary fermentation product, soil and fresh kitchen waste The ratio is 80:10:10; finally, Eisenia foetida is evenly implanted in the mixture;

[0066] After 7 days of earthworm treatment, th...

Embodiment 2

[0074] a. Garbage pretreatment: crush the collected kitchen waste, mix it with the crushed straw at a dry weight ratio of 1:1, adjust the moisture content to 60%, and adjust the carbon-nitrogen ratio to 27:1

[0075] b. Primary fermentation: first lay a layer of unbroken straw on the bottom of the fermentation tank, spread the adjusted food waste on the straw, and finally cover the crushed food waste with a layer of semi-decomposed waste; make the temperature reach 50 ℃-60℃, then maintain for 4 days, and the first fermentation is completed;

[0076] c. Secondary fermentation: adjust the pH value of the primary fermentation product to 7.5, adjust the water content to 61%, adjust the carbon-to-nitrogen ratio to 32, add soil and fresh kitchen waste, the mass ratio of the primary fermentation product, soil and fresh kitchen waste The ratio is 70:10:20; finally, Eisenia foetida is evenly implanted in the mixture;

[0077] After 10 days of earthworm treatment, the weight of earthwo...

Embodiment 3

[0079] a. Garbage pretreatment: crush the collected kitchen waste, mix it with the crushed straw at a dry weight ratio of 2:1, adjust the moisture content to 55%, and adjust the carbon-nitrogen ratio to 30:1

[0080] b. Primary fermentation: first lay a layer of unbroken straw on the bottom of the fermentation tank, spread the adjusted food waste on the straw, and finally cover the crushed food waste with a layer of semi-decomposed waste; make the temperature reach 50 ℃-60℃, then maintain for 4 days, and the first fermentation is completed;

[0081] c. Secondary fermentation: adjust the pH value of the primary fermentation product to 6.5, adjust the water content to 63%, adjust the carbon-to-nitrogen ratio to 35, add soil and fresh kitchen waste, the mass ratio of the primary fermentation product, soil and fresh kitchen waste The ratio is 75:5:20; finally, evenly implant Eisenia foetida in the mixture;

[0082] After 10 days of earthworm treatment, the weight of earthworms in...

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Abstract

The invention provides a food waste composting method and a rural waste classification method using the same. The classification method comprises the steps of dividing rural waste into food waste and fuel waste, and according to the characteristics of the waste, using the food waste for preparing fertilizer and preparing the combustible waste into RDF fuel, wherein the preparation of the food waste into fertilizer comprises the steps that aerobic primary fermentation is performed on the waste, then a primary fermentation product is adjusted, and secondary fermentation is performed by implanting earthworms in the primary fermentation product; after the secondary fermentation, food waste is quickly decayed; in the RDF fuel production process, dry and wet separation, natural air drying, and mixing with dry biomass methods are adopted to deal with the waste, thereby reducing energy consumption. Compared with the current waste disposal methods, the food waste composting method and the rural waste classification method using the same, provided by the invention, make full use of the waste, turn the waste into useful fertilizer, and have the advantages of short period of waste composting, good fertilizer effect, low consumption in preparing fuel from the waste.

Description

technical field [0001] The invention relates to the technical field of classification and treatment of township garbage, in particular to a method for composting food waste and a method for sorting and treatment of township garbage using the same. Background technique [0002] Garbage classification is a reform of the traditional way of garbage collection and disposal, and a scientific management method for effective disposal of garbage. Facing the ever-increasing garbage production and the deteriorating environmental conditions, how to maximize the utilization of garbage resources, reduce the amount of garbage disposal, and improve the quality of living environment through garbage classification management is one of the urgent issues of common concern to all countries in the world. . [0003] At present, the method of garbage classification is relatively complicated, and most of them are based on garbage classification, namely: recyclables, kitchen waste, other garbage, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F15/00C05F17/00C05G3/00C10L5/44C10L5/46
CPCC05D3/02C05F9/00C05G3/00C10L5/445C10L5/46C05F17/05C05F17/50C05F11/00Y02E50/10Y02E50/30Y02W30/40
Inventor 龚小梅王砚李彬曹宏
Owner CHONGQING SAGE RENEWABLE RESOURCES UTILIZATION CO LTD
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