Kitchen garbage treatment and resource utilization method and system

A kitchen waste recycling technology, applied in biochemical equipment and methods, biomass post-treatment, biomass pre-treatment, etc., can solve the problems of large loss, complicated process, and increased project investment and operating costs of treatment plants , to achieve high resource utilization, uniform pulp quality, and continuous pyrolysis production

Pending Publication Date: 2022-07-05
BEIJING JIELV ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The core process of the mainstream kitchen waste pretreatment technology in my country is mechanical sorting, which adopts the intermittent production method and sorts the waste according to the size and shape. treatment, resulting in a long pretreatment process, complex procedures, high frequency of equipment maintenance and overhaul, affecting the production stability of subsequent biological reactions, and increasing the engineering investment and operating costs of the treatment plant

Method used

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  • Kitchen garbage treatment and resource utilization method and system
  • Kitchen garbage treatment and resource utilization method and system
  • Kitchen garbage treatment and resource utilization method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] The materials, reagents or equipment used in the following examples, unless otherwise specified, can be obtained from commercial channels or existing technologies, and will not be repeated herein.

[0076] After the kitchen waste is treated by thermal hydrolysis, the organic matter in the waste is dissolved and dissolved, killing the microorganisms and eggs on the surface of the kitchen waste. While completing the harmlessness and reduction of the kitchen waste, anaerobic fermentation can be carried out. Realize the recycling of kitchen waste.

[0077] When the incoming kitchen waste is mainly food residues generated in residents' lives or mixed with some kitchen wastes, the content of oil and fat in the waste components is high, and it needs to be processed by the oil extraction process to avoid subsequent anaerobic digestion and leachate treatment. adversely affect the system. like figure 1 As shown, the process steps are as follows:

[0078] 1) The kitchen waste i...

Embodiment 2

[0088] When the incoming kitchen waste is mainly fruit and vegetable waste from the farmers market, the oil content in the waste is low, and there is no need to increase the oil extraction process. The process steps are as follows:

[0089] 1) The kitchen waste is thermally hydrolyzed at high temperature in the horizontal continuous thermal hydrolysis system to kill the microorganisms and eggs on the surface of the kitchen waste and destroy the tissue structure of some substances in the waste;

[0090] 2) The composite dynamic pulping system crushes and separates the hydrolyzed clinker, and mixes it through hydraulic shearing and mechanical stirring to form a homogenized slurry. The separated kitchen waste solid slag, plastic products, glass products and metals and other impurities enter the solid liquid separation system;

[0091] 3) The homogenized slurry enters the sand and impurity removal system to remove impurities such as sand, glass and shells;

[0092] 4) The filtrat...

Embodiment 3

[0098] example image 3 As shown, a kitchen waste continuous thermal hydrolysis system A provided in this embodiment includes a feed conveyor 1, a feed storage section 6, a feed balance section 7, a horizontal thermal hydrolysis tank 11, The discharge balance section 13, the discharge storage section 15, the discharge conveyor 17 and the balance tank 4.

[0099] A screw conveying device is provided inside the horizontal thermal hydrolysis tank 11 . The top of the horizontal thermal hydrolysis tank 11 is provided with a feed port and a communication port communicating with the feed storage section 6 and the feed balance section 7 . The bottom of the horizontal thermal hydrolysis tank 11 is provided with several discharge ports and steam inlets 12 . The conveying channel from the feed conveyor 1 to the feed port of the horizontal thermal hydrolysis tank 11 is provided with a feed storage section 6 and a feed balance section 7; the discharge conveyor 17 to the discharge port of...

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Abstract

The invention relates to a kitchen garbage treatment and resource utilization method and system. The method comprises the following steps: performing high-temperature thermal hydrolysis on the kitchen garbage in the horizontal continuous thermal hydrolysis system; the hydrolyzed clinker is crushed and separated through a hybrid power pulping system, homogenized slurry is formed through hydraulic shearing and mechanical stirring and mixing, and separated solid materials are fed into a solid-liquid separation system; feeding the homogenized slurry into a sand and impurity removal system for sand and impurity removal; and sending the slurry subjected to sand and impurity removal into an anaerobic digestion system for treatment to generate biogas, biogas slurry and biogas residues. Strong slurry flow from bottom to top and friction force between kitchen garbage are formed through the stirring device in the hybrid power slurry making system to complete slurry making, the slurry forming quality is uniform, pyrolysis production is continuous, automatic production can be achieved, the production efficiency is high, the working procedure is simple, and the resource utilization rate is high.

Description

technical field [0001] The invention relates to the technical field of solid waste treatment, in particular to a kitchen waste treatment and resource utilization method and system. Background technique [0002] Kitchen waste is an important part of domestic waste, including food residues generated in residents' lives and fruit and vegetable waste from farmers' markets. The water content of kitchen waste is as high as 74.94%-87.07%, and it contains a large amount of carbohydrates, proteins, lipids and other organic substances, which has good biodegradability, but also leads to the shortcomings of kitchen waste, such as perishability and bacteria breeding. , if not properly handled, it will seriously affect the health of residents and environmental hygiene. Kitchen waste accounts for 49.4%-64.5% of my country's urban domestic waste. Proper treatment and resource utilization of kitchen waste not only directly affects the quality of residents' living environment, but also is of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P5/02C12M1/107C12M1/02C12M1/00
CPCC12P5/023C12M21/04C12M37/04C12M45/20C12M45/06C12M45/02C12M45/04
Inventor 陆鹏赵凤秋马淑静蒋宝辉王昆明吴福祥苏迎居玉坤刘欢于海龙贾志刚
Owner BEIJING JIELV ENVIRONMENTAL TECH CO LTD
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