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Organic solid waste regeneration resource treatment method and apparatus system thereof

A technology of organic solids and renewable resources, applied in the removal of solid waste, biological organic part treatment, organic fertilizers, etc., can solve the problems of long heating time, high processing cost, low degree of automation, etc. Short fermentation time and the effect of improving quality

Active Publication Date: 2013-02-13
国环电气科技(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the technology of using subcritical hydrolysis to treat organic solid waste currently has problems such as poor set of equipment, difficult selection of heating system, and limited batch processing capacity.
At present, for the subcritical water treatment technology, the corresponding patent literature also has some reports, such as the Chinese patent application number 200580004805.2, the name is "subcritical water decomposition treatment product production method and subcritical water decomposition treatment product production device", is The pretreated organic solid waste is taken from the bottom layer of the reaction vessel, and by heating and pressurizing, different concentrations are set in each layer, and the required substances can be extracted from each layer as needed. This method cannot realize intelligent , so each part cannot control the temperature and pressure well, and after extracting the required substances from the middle layer, it needs to be re-pressurized, and the processing cost is high; the Chinese patent number is 200680054674.3, and the name is "organic waste This method discloses a method that can not only process sludge and waste plastics, but also process organic solid wastes in general households and public domains. However, this method has a single processing equipment and is only connected to one reactor for processing. , and the conditions of 230°C and 3MPa or more are required for processing, the cost is high, and the post-treatment products are not used in the follow-up
Japanese Patent Publication Nos. 2008-246300, 2003-306825, and 2003-47409 all record similar garbage disposal devices, but all have the technical problems of long heating time, high cost, low degree of automation, and limited processing capacity.
None of the above documents reported a complete set of treatment process for producing organic solid waste into fertilizer by means of subcritical water; and the provided subcritical water treatment methods required additional energy supply

Method used

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  • Organic solid waste regeneration resource treatment method and apparatus system thereof
  • Organic solid waste regeneration resource treatment method and apparatus system thereof

Examples

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Embodiment 1

[0095] Collect 30 tons of food waste (water content 90%) every day, and about 20 tons of liquid substrate and 10 tons of solid substrate (water content 70%) can be separated. 10 tons of solid substrate and 3 tons of straw are processed by subcritical hydrolysis to obtain about 9-10 tons of fertilizer (after drying, the moisture content is 30%).

[0096] Add 1.15 tons of straw to 20 tons of liquid substrate for anaerobic fermentation, and the anaerobic fermentation tank can be used Figure 5 The anaerobic fermentation tank shown includes: a water storage tank (51), an oil storage tank (52), an anaerobic fermentation tank (53), a gas storage membrane (54), and a transition storage tank (55). It can produce 345 cubic meters of crude biogas, 18 tons of biogas slurry and 1.8 tons of biogas residue (moisture content 75%). Wherein the subcritical hydrolysis reactor adopts the fully intelligent subcritical hydrolysis double reactor of the applicant's previous application.

[0097] I...

Embodiment 2

[0099] Add 5 tons of straw to 100 tons of chicken manure per day, and after 30-35 days of anaerobic fermentation, 9500 cubic meters of crude biogas, 20 tons of biogas residue (75% moisture content) and 80 tons of biogas slurry will be produced. After adding 10 tons of straw to 20 tons of biogas residues, about 18 tons of fertilizers are obtained through subcritical hydrolysis (after drying, the moisture content is 30%). Biogas slurry treatment and reuse.

[0100] In 30-35 days, a total of 540 tons of fertilizers, 2,000 tons of clean water (domestic water, clean factory area), and tons of refined biogas (except for the biogas generated by the operation of the equipment in the present invention are all for their own use) were obtained.

[0101] According to the experimental results obtained in Examples 1 and 2, adjust the system parameters, prolong the running time of the system, and record the data. After 5 months of testing, it has been confirmed that after the entire plant a...

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Abstract

The invention provides an organic solid waste regeneration resource treatment method, which has a subcritical hydrolysis process and an anaerobic fermentation process, wherein the anaerobic fermentation process supplies energy for the subcritical hydrolysis process, and the subcritical hydrolysis process is an end treatment process, and comprises treatment of biogas residues generated by anaerobic fermentation. With the organic solid waste treatment method and the apparatus system thereof, energy self-circulation within the system can be achieved, wherein biogas generated by the anaerobic fermentation system is adopted as energy supply of the subcritical hydrolysis system, and the biogas residues generated by anaerobic fermentation can be treated into a fertilizer by the subcritical hydrolysis system, such that problems in the prior art are solved, energy consumption is substantially reduced, and environmental protection and pollution reduction are easily achieved, wherein the problems in the prior art comprise that: the biogas residues generated by anaerobic fermentation do not have a discharging way, and the subcritical hydrolysis system requires the external function.

Description

technical field [0001] The invention relates to a method and a treatment device for treating and reusing organic solid waste, in particular to a combined self-circulation equipment and system of subcritical water and anaerobic fermentation for organic solid waste. Background technique [0002] Organic solid waste refers to solid waste with high organic content and low water content, which are generally biodegradable. These wastes contain a large amount of biomass energy, and the effective use of this type of biomass energy is of great significance to the sustainable development of the environment and economy. [0003] my country's agricultural production and product consumption have produced a large amount of urban and rural organic solid waste, such as urban domestic sludge, kitchen waste, suburban livestock and poultry manure, and crop straw. These organic matter should be returned to the farmland in the form of fertilizer to complete the entire material cycle, but it is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B5/00B09B3/00C05G1/00C05F9/02
CPCY02E50/343Y02A40/20Y02E50/30Y02W30/40
Inventor 周剑浩
Owner 国环电气科技(上海)有限公司
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