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Mechanical force chemical treating method for organic solid wastes

A mechanochemical, organic solid technology, applied in the removal of solid waste, fertilizers made from biological waste, chemical industry, etc., can solve the problems of waste gas, high energy consumption, etc. The effect of investment savings

Inactive Publication Date: 2010-10-20
SHANGHAI MULIANG IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a mechanochemical treatment method for organic solid waste, so as to solve the shortcomings of existing chemical catalytic hydrolysis methods such as large energy consumption and waste gas generation.

Method used

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  • Mechanical force chemical treating method for organic solid wastes
  • Mechanical force chemical treating method for organic solid wastes
  • Mechanical force chemical treating method for organic solid wastes

Examples

Experimental program
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Effect test

Embodiment 1

[0033] The organic solid waste is the combination of crop stalks and activated sludge. The crop stalks are first crushed into 3mm finely crushed materials with a high-speed fine crusher with a rotation speed of 2900 rpm, and then 4 times of water is added and acid is added to adjust the pH to 3. Continuously circulate in the high-speed grinding and activating machine for 1 hour, pressurize and maintain the pressure with a pressure tank for 2 hours, the temperature is 120 ° C (provided by an air compressor), and the pressure is maintained at 1.0 MPa. The aerosol generated by the pressurized treatment is collected by the aerosol trap, and the condensed water generated is recovered. While maintaining the pressure in the pressure tank at 0.3MPa, discharge the material to the pressure relief tank.

[0034]The obtained material is mixed with the activated sludge in a volume ratio of 1:1, acid is added to adjust the pH to 1-4, and the mixture is mixed for 5 minutes with a double-ribb...

Embodiment 2

[0036] Organic solid waste is the combination of sorted organic domestic waste and activated sludge. The sorted organic domestic waste is first crushed into mud-like fine materials by a high-speed fine crusher with a rotation speed of 3000 rpm, and then enters the pressure flow The dehydration drying tank uses the hot air with a pressure of 0.4MPa and a temperature of 120°C generated by an air compressor to enter from the bottom of the tank and pass through the material layer to force dehydration under the action of pressure flow to obtain a water content of 35 % of the material, use the pressure flow to dry the dehydration tank with a pressure of 0.3MPa to send the processed material to the pressure relief tank. Then sieve with a rotary sieving machine with a sieve hole of 10 mm and a rotation speed of 40 rpm to obtain powdery undersize.

[0037] The powdery undersize is mixed with the activated sludge at a volume ratio of 1:1, acid is added to adjust the pH to 1-4, and the m...

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Abstract

The invention relates to a mechanical force chemical treating method for organic solid wastes. The method mainly comprises the following steps of: (1) adjusting pH of pre-treated organic solid wastes to be within the range from 1 to 4 by adding acid and mixing the pre-treated organic solid wastes and the acid; (2) performing ultrasonic degradation, impinging stream degradation and dehydration, pressure flow dehydration and grinding activation to prepare a dry material; and (3) preparing an organic energy fertilizer by using conventional technology. By using wave energy produced by an ultrasonic generator, compression heat produced by an air compressor and mechanical force energy produced by compression, the organic solid wastes are degraded and dehydrated, so that the method has the advantages of saving energy equipment such as boiler and the like, saving a conventional dryer, reducing the installed capacity at the use point, simplifying the process flow and the equipment, reducing the area occupied by the device by one second, saving the investment by one third, and saving the energy consumption by two thirds, along with no waste gas and easy implementation of industrialization.

Description

technical field [0001] The invention relates to a mechanochemical treatment method for organic solid waste. Background technique [0002] With the continuous growth of population, the rapid development of human production activities and the continuous improvement of social life, the discharge of various wastes is also increasing, which seriously threatens the living environment and quality of human beings. Organic solid waste includes activated sludge generated during municipal sewage treatment, sorted organic domestic waste, livestock and poultry manure, crop straw, xylitol residue, furfural residue, industrial fermentation waste, etc. Most of the traditional treatment methods use deep pit landfill, stacking and incineration, etc. Only a small part is used as fertilizer for farmland, raw material for biogas fermentation, or incineration for power generation after simple drying. These treatment methods occupy a large amount of land, and are prone to secondary pollution, hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F15/00B09B3/00C05F3/00C05F5/00C05F7/00
CPCY02A40/20Y02P20/10
Inventor 宋荟刘文治
Owner SHANGHAI MULIANG IND CO LTD