Processing method of kitchen garbage

A kitchen waste and treatment method technology, applied in the field of kitchen waste treatment, can solve the problems of imperfect resource utilization technology, incomplete material fermentation, easy acidification during debugging, etc., to save human resources, simple pretreatment, and no human body. Harmful effect

Active Publication Date: 2013-05-15
北京洁绿环境科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Xining and Ningbo models focus on feed technology, but social problems such as "swill pigs" have caused doubts about this technology, such as how to prove the reliability of feed (same disease and same origin), how to prove the scientific nature of nutrition, etc.; Suzhou The model focuses on wet hydrolysis resource treatment, but its follow-up resource technology is not perfect, and the simultaneous supporting sewage treatment, odor treatment and other processes have not kept up. Talking about the concept, how to solve the complicated problems of pre-treatment and sorting, how to solve the problems of secondary pollution such as biogas slurry and odor in the composting process, etc. There is no good solution; the Chongqing model focuses on anaerobic dry biogas production technology, but how to Further exploration is needed to solve the problems of separation of pre-treated organic matter, incomplete fermentation of materials in dry anaerobic process, low biogas production, easy acidification during commissioning, and easy blockage of equipment.

Method used

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  • Processing method of kitchen garbage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1, the processing method of kitchen waste

[0023] according to figure 1 The process shown is for the treatment of kitchen waste.

[0024] (1) First use a bag breaking machine to tear the plastic bag containing the garbage, release the wrapped garbage, and then transport the kitchen waste to the hydrolysis tank;

[0025] (2) Introduce saturated steam into the hydrolysis tank, and control the hydrolysis conditions: the temperature is 150°C, the pressure is 1.0MPa, and the hydrolysis is carried out for 150 minutes under the above conditions, so as to fully sterilize the garbage and achieve harmlessness. At the same time, the thermal hydrolysis step can effectively destroy the tissue structure of some substances in the kitchen waste, causing the water inside the tissue to overflow, which is more conducive to the subsequent treatment of the kitchen waste; after the thermal hydrolysis, open the thermal hydrolysis tank under a certain pressure, Expansion of the m...

Embodiment 2

[0029] Embodiment 2, the treatment method of kitchen waste

[0030] according to figure 1 The process shown is for the treatment of kitchen waste.

[0031] (1) First use a bag breaking machine to tear the plastic bag containing the garbage, release the wrapped garbage, and then transport the kitchen waste to the hydrolysis tank;

[0032] (2) Introduce saturated steam into the hydrolysis tank, and control the hydrolysis conditions: the temperature is 150°C, the pressure is 1.0MPa, and the hydrolysis is carried out for 120 minutes under the above conditions, so as to fully sterilize the garbage and achieve harmlessness. At the same time, the thermal hydrolysis step can effectively destroy the tissue structure of some substances in the kitchen waste, causing the water inside the tissue to overflow, which is more conducive to the subsequent treatment of the kitchen waste; after the thermal hydrolysis, open the thermal hydrolysis tank under a certain pressure, Expansion of the ma...

Embodiment 3

[0036] Embodiment 3, the treatment method of kitchen waste

[0037] according to figure 1 The process shown is for the treatment of kitchen waste.

[0038] (1) First use a bag breaking machine to tear the plastic bag containing the garbage, release the wrapped garbage, and then transport the kitchen waste to the hydrolysis tank;

[0039] (2) Introduce saturated steam into the hydrolysis tank, and control the hydrolysis conditions: the temperature is 150°C, the pressure is 1.0MPa, and the hydrolysis is carried out for 90 minutes under the above conditions, so as to fully sterilize the garbage and achieve harmlessness. At the same time, the thermal hydrolysis step can effectively destroy the tissue structure of some substances in the kitchen waste, causing the water inside the tissue to overflow, which is more conducive to the subsequent treatment of the kitchen waste; after the thermal hydrolysis, open the thermal hydrolysis tank under a certain pressure, Expansion of the mat...

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PUM

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Abstract

The invention discloses a processing method of kitchen garbage. The processing method comprises the following steps of: transferring the kitchen garbage to hydrolyze in a hydrolyzing tank, transferring the hydrolyzed clinker aggregate to a crush presser to crush and squeeze, transferring the squeezed slurry body to an anaerobic digestion reactor for anaerobic digestion so as to finish the treatment on the kitchen garbage. The processing method provided by the invention can efficiently realize stabilization, harmlessness and minimization of the kitchen garbage, the unstable organic substance is fully stabilized, methane and water and the like are formed so as not to generate secondary pollution, and the minimization of organic matter in the garbage is effectively realized through a biogas slurry and biogas residue processing system; and generated methane after anaerobic digestion is used as a high-quality clean energy, and fixed material after crushing and squeezing is treated reasonably according to specific circumstances.

Description

technical field [0001] The invention relates to a treatment method for kitchen waste, which belongs to the field of solid waste treatment and recycling. Background technique [0002] Kitchen waste is an important part of domestic waste, and it is a kind of solid waste formed by residents in the process of daily consumption. It has the characteristics of high moisture content, high organic matter content, high oil and salt content, and easy corruption, which seriously affects people's health and environmental sanitation. [0003] my country's urban domestic waste is basically mixed, and the proportion of kitchen waste is about 37-62%. In recent years, with the improvement of people's living standards, the generation of kitchen waste has an increasing trend, and the proportion of kitchen waste in urban domestic waste has also increased. The output of kitchen waste in my country reached 45 million tons in 2000, and it will reach 90 million tons by 2007, with an annual growth ...

Claims

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Application Information

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IPC IPC(8): B09B3/00B09B5/00
Inventor 赵凤秋董健景有海张聪慧赵妙张锋田琼琼韩创伟张玉川王方宁
Owner 北京洁绿环境科技股份有限公司
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