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Kitchen waste, municipal sludge and forestry and agricultural residue fermentation tank ultrahigh-temperature aerobic fermentation composting method

A technology for agricultural and forestry waste and kitchen waste, which is applied in the field of organic solid waste treatment and renewable energy treatment, can solve problems such as no unified treatment method, and achieve the effects of fast decomposition of organic matter, high fermentation temperature, and short fermentation period

Pending Publication Date: 2021-03-12
HUBEI JUNJI WATER TREATMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technology for food waste, agricultural and forestry waste and urban sludge is treated separately, and there is no unified treatment method. It is urgent to find a unified, energy-saving and resource-based treatment method.

Method used

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  • Kitchen waste, municipal sludge and forestry and agricultural residue fermentation tank ultrahigh-temperature aerobic fermentation composting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] In a certain area of ​​Wuhan, kitchen waste, urban sludge, and agricultural and forestry waste were collected and subjected to high-temperature aerobic fermentation using the process of the present invention. The water content of food waste was 81%, 8 tons, and the water content of urban sludge was 83%, 4 tons, 2 tons of agricultural and forestry waste, such as figure 1 As shown, it specifically includes the following steps:

[0036] (1) Pretreatment

[0037] After the food waste is collected, it is sent by the transport vehicle to the hopper in the workshop, and the hopper is lifted to the crushing and dehydration device. While the food waste is crushed, the moisture in the waste is squeezed out, and the particle size and moisture content of the material after crushing and extrusion 5mm and 65%, the crushed and dehydrated materials are transported by the belt into the homogeneous adjustment bin, and the liquid is collected and temporarily stored in the collection pool...

Embodiment 2

[0053] In a certain area of ​​Wuhan, kitchen waste, urban sludge, and agricultural and forestry waste were collected and subjected to high-temperature aerobic fermentation using the process of the present invention. The water content of food waste was 85%, 12 tons, and the water content of urban sludge was 86%, 6 1 ton, 3 tons of agricultural and forestry waste, 9 tons of backmixed material with a moisture content of 26%,; if figure 1 As shown, it specifically includes the following steps:

[0054] (1) Pretreatment

[0055] After the food waste is collected, it is sent by the transport vehicle to the hopper in the workshop, and the hopper is lifted to the crushing and dehydration device. While the food waste is crushed, the moisture in the waste is squeezed out, and the particle size and moisture content of the material after crushing and extrusion 5mm and 65%, the crushed and dehydrated materials are transported by the belt into the homogeneous adjustment bin, and the liquid...

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Abstract

The invention relates to the technical field of organic solid waste treatment and renewable energy treatment, in particular to a kitchen waste, municipal sludge and forestry and agricultural residue fermentation tank ultrahigh-temperature aerobic fermentation composting method which comprises the following steps: (1) pretreating; (2) fermenting in a fermentation tank at ultra-high temperature: 1)adjusting physicochemical indexes; 2) building a pile; 3), aerating; 4), turning and throwing; 5), inoculating extreme thermophilic microorganisms; and (3) screening the decomposed material, transporting the undersize material as a finished product, and refluxing and utilizing the oversize material. According to the method, the kitchen waste, the municipal sludge and the forestry and agriculturalresidues are used as raw materials for mixed fermentation, decomposed substances are organic fertilizers and can be reused for soil, and waste is turned into wealth. According to the method, the fermentation temperature exceeds 80 DEG C, the highest fermentation temperature can reach 110 DEG C, the fermentation temperature is high, the fermentation period is short, organic matter decomposition isfast, germs, viruses and worm eggs in the garbage are effectively killed, and garbage reduction, harmlessness and resourceful treatment are fast achieved.

Description

technical field [0001] The invention relates to the technical field of organic solid waste treatment and renewable energy treatment, in particular to an ultra-high temperature aerobic fermentation composting method in a fermentation tank for kitchen waste, urban sludge and agricultural and forestry waste. Background technique [0002] Food waste, urban sludge, and agricultural and forestry waste are the main components of organic solid waste. How to deal with food waste, urban sludge, and agricultural and forestry waste has become a research hotspot at home and abroad. With the development of my country's economy, people's daily diet and consumption activities have produced a large amount of domestic waste. The increase in population and the continuous growth of cities have led to an astonishing amount of urban domestic waste generated every year. As a part of urban domestic waste, the proportion of kitchen waste is increasing year by year. In large cities such as Beijing, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F15/00C05F17/20C05F17/80C05F17/70C05F17/957C05F17/964C05F17/979C05F17/986
CPCC05F7/00C05F17/20C05F17/70C05F17/80C05F17/957C05F17/964C05F17/979C05F17/986C05F9/00C05F11/00Y02W30/40Y02P20/133
Inventor 刘鲁建董俊王威陶威张岚欣宋劲强覃将伟曹斌强熊蔚张琴李绍俊张双峰梅泽坤黄胜
Owner HUBEI JUNJI WATER TREATMENT
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