Subcritical hydrolysis-based organic solid waste treatment system and treatment method utilizing same

An organic solids, treatment system technology, applied in biomass post-treatment, biomass pretreatment, biochemical equipment and methods, etc., can solve the problem of anaerobic digestion treatment unit covering a large area, low biogas production, long fermentation period, etc. problems, to achieve the effect of improving the availability, biogas yield and biogas methane purity, and shortening the fermentation period

Pending Publication Date: 2017-12-12
广东国能中林实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Thermal hydrolysis anaerobic digestion technology has obtained good engineering support in municipal sludge disposal, but the anaerobic digestion treatment unit has shortcomings such as large equipment occupation, low biogas production, and long fermentation cycle (12-15d), which need to be improved process to improve operating efficiency, reduce investment and operating costs

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  • Subcritical hydrolysis-based organic solid waste treatment system and treatment method utilizing same
  • Subcritical hydrolysis-based organic solid waste treatment system and treatment method utilizing same
  • Subcritical hydrolysis-based organic solid waste treatment system and treatment method utilizing same

Examples

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Embodiment example 1

[0062] Discarded antibiotic residues from the chemical manufacturing industry: Antibiotic residues will be transferred and accumulated through the environment and the food chain because they contain residual pharmaceutical ingredients. Since 2008, the residues have been listed as hazardous waste by the state.

[0063] The present invention handles the process technology of antibiotic bacterium slag and the design ability index of equipment:

[0064] Process technology: Add antibiotic residues with a solid content of 30.5% to the homogenization tank according to the proportion of 6.1% solid content mixed solution to supplement the process water, stir 200-300r / min, stir 30min / cycle, and the homogenized material enters To hydrolyze in the subcritical hydrolysis system, set the temperature of the hydrolysis reactor to be controlled within the range of 150°C-200°C, and the pressure to be 1.0-1.2MPa to keep the homogenized material in a liquid state, and keep the temperature and pres...

Embodiment example 2

[0066] Residual sludge from biochemical treatment of municipal sewage:

[0067] Sludge is solid waste generated during sewage treatment, and its main components are pathogens, organic matter, bacteria, etc.

[0068] The present invention handles the process technology of sludge and the design ability index of equipment:

[0069]Process technology: The moisture content of the sludge dewatered by the belt filter press in the sewage plant is below 80%, and it is transported to the homogenization tank, and the mixed solution of the effluent of the secondary sedimentation tank is extracted by the submersible sewage pump, and adjusted according to a certain ratio to a moisture content of ≤ 93-95%; the sludge with a water content of 94% is transported by a plunger pump, first passes through the primary heat exchanger to exchange heat with the discharge of the hydrolysis reactor, and then passes through the secondary heat exchanger to exchange heat with the heat transfer oil, and fina...

Embodiment example 3

[0072] Municipal food waste:

[0073] Food waste is organic solid and liquid waste formed by residents in the process of living consumption, including urban vegetable waste, restaurant food waste, household kitchen and dining table waste, and various melon and fruit peels. Statistics from the Institute of Solid Waste Pollution Control and Recycling, Department of Environment, Tsinghua University show that cities in my country generate no less than 60 million tons of kitchen waste every year. The main characteristics of food waste are high moisture content, rich organic matter content, and perishability. The percolation water will pollute water bodies and the atmosphere, and affect the urban appearance and living environment.

[0074] The design capability index of the process technology and equipment of the present invention for processing kitchen waste:

[0075] Process technology: First, the food waste is conveyed to the crushing equipment through the screw conveyor for cru...

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Abstract

The invention relates to a subcritical hydrolysis-based organic solid waste treatment system and a treatment method utilizing the same. The waste treatment system comprise a homogenizing system, an external heating subcritical hydrolysis system with a waste heat recycling function, a solid-liquid separation system and an anaerobic reaction system which are sequentially connected, wherein the anaerobic reaction system comprises an IC reactor, a methane purifying tower, a gas storage bag and a heat conducting oil furnace which are sequentially connected, the IC reactor is used for carrying out efficient anaerobic reaction on filtrate so as to generate methane, and the generated methane is purified by virtue of the methane purifying tower, is stored in the gas storage bag and is then conveyed into the heat conducting oil furnace for combustion so as to supply a heat source for the external heating subcritical hydrolysis system with the waste heat recycling function. The invention further provides a treatment method utilizing the system. The subcritical hydrolysis-based organic solid waste treatment system has the beneficial effects that the decrement of organic solid waste is relatively high, the fermentation cycle is relatively short, the heat self-balancing of the whole system can be realized, and the innocent treatment of the organic solid waste can be realized.

Description

technical field [0001] The invention relates to the technical field of organic solid waste treatment, in particular to an organic solid waste treatment system based on subcritical hydrolysis and a disposal method thereof. Background technique [0002] Organic solid waste usually refers to biodegradable organic waste with a moisture content of less than 85%-90%, including animal manure, crop residues, domestic sludge, food production waste, industrial organic waste, wood processing production waste, Household garbage, etc. At present, the treatment methods for organic solid waste mainly include three main technical approaches: incineration, safe landfill and recycling. The incineration method has a large treatment capacity, can eliminate drug residues and pathogenic microorganisms, and reduce the volume of organic solid waste by 95%. As well as urban living kitchen waste, which has a high water content and requires additional fuel, resulting in high incineration treatment c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12M1/00C12M1/107C12M1/02
CPCC12M21/04C12M23/36C12M23/58C12M27/02C12M45/02C12M45/04C12M45/06C12M47/18Y02E50/30
Inventor 林进猛何杰雄
Owner 广东国能中林实业有限公司
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