Domestic waste comprehensive treatment method based on anaerobic digestion and hydrothermal carbonization

A hydrothermal carbonization and anaerobic digestion technology, which is applied in the treatment of biological organic parts, climate change adaptation, and solid waste removal, etc., can solve the problems of high operating cost and occupation of land resources for incineration treatment, and improve the potential of soil carbon sink. , The effect of low operating cost and high degree of resource utilization

Active Publication Date: 2014-04-16
HANGZHOU HUHUI ENVIRONMENTAL PROTECTION TECH
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] Aiming at the disadvantages of landfill treatment occupying land resources and high operating cost of incineration treatment in the prior art, the present invention provides a comprehensive domestic waste treatment method based on anaerobic digestion and hydrothermal carbonization

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  • Domestic waste comprehensive treatment method based on anaerobic digestion and hydrothermal carbonization

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Effect test

Embodiment 1

[0028] Comprehensive domestic waste treatment methods based on anaerobic digestion and hydrothermal carbonization, such as figure 1 shown, including

[0029] (1) Slurry treatment: transport domestic garbage to the mixing tank, stir and slurry treatment for 0.5h after water injection, and then transport to the grid to separate large pieces of rubber, plastic and other materials in the material, and then transport to the removal The fine sand, glass and other debris are separated in the sand device to obtain a slurry with a moisture content of 80%;

[0030] (2) Anaerobic digestion: pump the slurry into the anaerobic digestion tank for anaerobic digestion. The temperature of anaerobic digestion is controlled at 32°C. The generated biogas is first passed to the desulfurization device for treatment, and then passed to the biogas boiler for combustion to generate high temperature Steam and digested residues are transported to the preheating tank for preheating treatment for 1 hour,...

Embodiment 2

[0034] Comprehensive domestic waste treatment methods based on anaerobic digestion and hydrothermal carbonization, such as figure 1 shown, including

[0035] (1) Slurry treatment: transport domestic waste to the mixing tank, stir and slurry treatment for 1 hour after water injection, and then transport it to the grid to separate the rubber, plastic and other large pieces in the material, and then transport it to the sand removal The fine sand, glass and other debris are separated in the device to obtain a slurry with a moisture content of 90%;

[0036] (2) Anaerobic digestion: pump the slurry into the anaerobic digestion tank for anaerobic digestion. The temperature of anaerobic digestion is controlled at 38°C. The generated biogas is first passed to the desulfurization device for treatment, and then passed to the biogas boiler for combustion to generate high temperature Steam and digested residues are transported to the preheating tank for preheating treatment for 3 hours, a...

Embodiment 3

[0040] Comprehensive domestic waste treatment methods based on anaerobic digestion and hydrothermal carbonization, such as figure 1 shown, including

[0041](1) Slurry treatment: Transport domestic waste to the mixing tank, stir and slurry treatment for 0.8h after water injection, and then transport it to the grid to separate large pieces of rubber, plastic, etc. in the material, and then transport it to the removal The fine sand, glass and other sundries are separated in the sand device to obtain a slurry with a moisture content of 83%;

[0042] (2) Anaerobic digestion: pump the slurry into the anaerobic digestion tank for anaerobic digestion. The temperature of anaerobic digestion is controlled at 55°C. The generated biogas is first passed to the desulfurization device for treatment, and then passed to the biogas boiler for combustion to generate high temperature Steam and digested residues are sent to the preheating tank for preheating treatment for 1.5 hours, and the preh...

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Abstract

The invention relates to a municipal solid waste reduction, energy regeneration and recycling method, and discloses a domestic waste comprehensive treatment method based on anaerobic digestion and hydrothermal carbonization. The domestic waste comprehensive treatment method comprises the following steps: slurry treatment, anaerobic digestion, hydrothermal carbonization, dewatering and drying. The domestic waste and kitchen waste are subjected to reduction, energy regeneration and recycling treatment, so that the domestic waste comprehensive treatment method is high in resource recycling degree, low in operation cost, clean and environment-friendly, and can ensure that pathogenic microorganisms in the wastes are completely killed, so that repugnant substances are converted and decomposed, and the domestic waste comprehensive treatment method has good economic value and social value.

Description

technical field [0001] The invention relates to a treatment method for urban domestic garbage reduction, energy conversion and resource recovery, in particular to a comprehensive treatment method for domestic garbage based on anaerobic digestion and hydrothermal carbonization. Background technique [0002] With the advancement of national urbanization and the improvement of residents' living standards, the generation of urban domestic waste in my country is increasing rapidly; according to statistics, by 2010, the annual production of urban domestic waste in the country has reached nearly 160 million tons. However, due to the long-term backwardness of my country's urban domestic waste treatment technology and insufficient investment in the construction of supporting facilities, most of the domestic waste has not been treated safely and effectively. came out and aroused widespread concern in the society. [0003] Currently, landfill and incineration technologies are mainly us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00C05F9/00
CPCY02A40/20Y02E50/30Y02W30/40
Inventor 曹玉成
Owner HANGZHOU HUHUI ENVIRONMENTAL PROTECTION TECH
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