Integrated biological and gasifyign treatment process for dewatered city domestic garbage

A municipal solid waste and dehydration technology, which is applied in the integrated process field of biogas residue drying and dehydration municipal solid waste biological and gasification treatment, can solve the problems of large deodorization gas volume, long cycle and high power consumption of composting, so as to improve resource utilization level, improving efficiency and effectiveness, and simplifying the sorting process

Inactive Publication Date: 2006-11-08
南京绿展能源有限公司
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the long anaerobic fermentation cycle, large tank capacity, large amount of deodorized gas after humus composting, high power consumption, and the mechanical dehydration of biogas residues requires a large amount of expensive coagulants and defoamers, high COD dehydrated biogas The cost of liquid treatment is extremely high, and its biogas residue compost also has market sales problems, so there is little application performance in developing countries
[0007] Therefore, it is difficult for a single waste treatment technology to fundamentally solve the existing problems of waste treatment. In order to achieve the goal of resource utilization, reduction and harmlessness of waste treatment, it is imperative to explore new ways of waste treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] After breaking bags of 1000 tons / day of primary municipal solid waste, it is sent to a sorting system composed of magnetic separator, screening machine, wind separator, water separator and other sorting machines, and the garbage is divided into organic matter, Inorganic, recyclables for gasification and recyclables for recycling. Among them, recyclables for gasification include textiles and wood and bamboo; organic matter includes animals and plants. Recyclables for recycling include metal, glass, paper, plastic, rubber, and others, which can be directly reused as resources. Inorganic substances include lime, bricks and ceramics, which are collected and landfilled hygienically.

[0035] The recyclables used for gasification are sent to the gasification furnace for gasification treatment. The temperature of the gasification furnace is controlled at 600°C. The gasification combustible gas is supplied as fuel gas after waste heat recovery and purification, and the ash of...

Embodiment 2

[0040] After breaking bags of 500 tons / day of primary municipal solid waste, it is sent to a sorting system composed of magnetic separators, screening machines, wind separators, water separators and other sorting machines, and the garbage is divided into organic matter, Inorganic, recyclables for gasification and recyclables for recycling. Among them, recyclables for gasification include textiles and wood and bamboo; organic matter includes animals and plants. Recyclables for recycling include metal, glass, paper, plastic, rubber, and others, which can be directly reused as resources. Inorganic matter includes lime soil, bricks and ceramics, which are collected as raw materials for building materials.

[0041] The recyclables used for gasification are sent to the gasification furnace for gasification treatment. The temperature of the gasifier is controlled at 900°C, and the gasified combustible gas can be used for the gas generator to generate electricity after waste heat re...

Embodiment 3

[0046]After breaking bags of 800 tons / day of primary municipal solid waste, it is sent to a sorting system composed of magnetic separators, screening machines, air separators, water separators and other sorting machines, and the garbage is divided into organic matter, Inorganic, recyclables for gasification and recyclables for recycling. Among them, recyclables for gasification include textiles and wood and bamboo; organic matter includes animals and plants. Recyclables for recycling include metal, glass, paper, plastic, rubber, and others, which can be directly reused as resources. Inorganic substances include lime, bricks and ceramics, which are collected and landfilled hygienically.

[0047] The recyclables used for gasification are sent to the gasification furnace for gasification treatment. The temperature of the gasification furnace is controlled at 750°C. The gasification combustible gas can be used for power generation by a gas generator after recovery and purificati...

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Abstract

The integrated biological and gasifying treatment process for dewatered city domestic garbage is the following steps: breaking trash bag; separating; gasifying the separated recyclables capable of being gasified in a gasifying furnace to produce fuel gas; collecting organic matters and refuse percolate and anaerobic fermenting; using the marsh gas generated during fermentation as fuel, drying the marsh gas residue and incinerating in incinerator; and burning the fuel gas in a boiler to provide energy. The present invention has high garbage treating efficiency and benefit and less secondary pollution.

Description

technical field [0001] The invention relates to a process for treating urban domestic waste, in particular to an integrated process for biological and gasification treatment of biogas residue drying and dehydration type municipal domestic waste. Background technique [0002] With the acceleration of urbanization and the continuous expansion of urban population, the generation of municipal solid waste is increasing rapidly. At present, waste treatment technologies such as landfill, composting, and incineration are mainly used, while anaerobic fermentation technology has not been popularized in developing countries due to high operating and construction costs. [0003] Traditional landfill treatment not only occupies a large amount of land, but also produces secondary pollution such as leachate pollution to water bodies and landfill gas emissions during the landfill process. [0004] Due to the mixed collection of garbage in our country, the compost produced from the mixed co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00
Inventor 张志霄
Owner 南京绿展能源有限公司
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