CN1530181A

CN1530181A - Processing method for house refuse

Info

Publication number: CN1530181A
Application number: CNA031158358A
Authority: CN
Inventors: 孙家瑛; 周承功; 沈增光; 杨华祖
Original assignee: JING'AN MUNICIPAL ENGINEERING Co Ltd SHANGHAI
Current assignee: JING'AN MUNICIPAL ENGINEERING Co Ltd SHANGHAI
Priority date: 2003-03-17
Filing date: 2003-03-17
Publication date: 2004-09-22

Abstract

A process for treating life gabage includes such steps as degrading, desmolysis, proportionally mixing it with the solidifying agent prepared from thioaluminate, silicate, and fluorosilicate, stirring, and solidifying to become building material.

Description

A kind of treatment process of domestic refuse

Technical field

The present invention relates to a kind of treatment process of domestic refuse, more particularly old domestic refuse directly makes its degraded and descending chain through pulverizing with biochemical reagents without refuse classification, introduces solidifying agent again, makes domestic refuse become induration as raw material of building materials.

Background technology

Carrying out domestic garbage resource in the city in recent years is that the rubbish that seek countries in the world is administered one of purpose, for the Recyclable in the domestic waste, adopts certain treatment process, and reproducible utilization makes its and primary resource that utilization value be arranged equally.Therefore people are to this extensive attention, and the treatment process of rubbish is a lot, and traditional treatment process mainly is a burying method, transport rubbish to countryside open-air or landfill.Adopt this method can take a large amount of soils, and can cause serious environmental to pollute, the resource that can recycle being embedded in vain is underground, and this also is the significant wastage to resource.Being burning method in addition, is a kind of method of handling flammable residue, it has been generally acknowledged that in the world following several wastes is suitable for burning disposal: the waste that 1, has bio-hazard; 2, the waste that is difficult to biological degradation and persistence existence in environment; 3, the waste of volatile and easy diffusion; 4, burning-point is lower than 40 ℃ of wastes; 5, be unsuitable for the waste and the organic waste of security landfill.Treatment capacity is big simultaneously to burn the burning method advantage, innoxious thorough, the residue stable performance, can reduce secondary pollution to greatest extent, requiring more than 4.75KJ/Kg with the calorific value that burns the treating refuse of combustion method but remain, the equipment one-time investment is big, the running expense height, in burning process, be easy to generate secondary pollution and discharge SO _x, NO _x, dust, HCl and extremely strong (environment protection 1999, (2): 16-18) CN 02113968 CN ZL93105561 CNZL97107381 such as PCDD/Fs of toxicity.It also can claim cracking process pyrolysis method, be that organic waste is heated to 500-1000 ℃ of a kind of waste disposal method that makes it resolve into inflammable gas, oils and solid residue under anaerobic or oxygen deprivation condition, this method exists pyrolytic technique too complicated, the processing cost height is so promote difficulty in a short time.

With decomposing with enzyme disaggregating treatment organic waste and the ight soil intravital enzyme of earthworm commonly used in the organism, make it become the earthworm muck of fertilizer efficiency height, no stink, can also obtain a large amount of earthworm bodies as medical material, the intravital protein of earthworm and the flesh of fish are the good feeds (processing of solid waste and utilize 1994.151) of fowl poultry and culture fishery quite.

Summary of the invention

The object of the invention provides a kind of method of domestic rubbish disposal, and this method is broken with regard to coarse reduction, fine powder without classification with different domestic refuses, key falls in biochemical reagents and steps such as degraded, curing, makes it become solid, and this solid can be used as material of construction.

The present invention implements through the following steps:

The matter sill is that domestic refuse is put into holding tank and carried out magnetic separation, then, pulverize through pulverizer, be transported to magnetic separator, it is broken to carry out fine powder again, puts into the rubbish storage warehouse through conveyer, add quantitative inorganic salt for example vitriol, sulplo-aluminate, silicofluoride, silicate etc., stir, last discharging, this kind material is exactly the starting material of material of construction.

Above-mentioned technology is mainly divided two stages:

Fs: adopt biochemical reagents to make old garbage degradation and descending chain;

Subordinate phase: be just to be mixed with a ratio with former material, stir and generate induration that this kind induration is as the starting material of material of construction with sulplo-aluminate, silicate, silicofluoride, vitriol etc.

Usually adopt following proportioning (weight percent)

The processing of old garbage degradation of fs, descending chain:

Old rubbish 85-92%

Sulfate dihydrate magnesium 7.8-14%

Degradation agents 0.2-1%

The preparation of subordinate phase solid material

Silicate 30-40%

Wherein potassium, sodium silicate account for 60%, silicofluoride accounts for 5%.

The employing solidifying agent is Calucium Silicate powder, water glass, potassium silicate;

Silicofluoride is Sodium Silicofluoride, potassium silicofluoride;

Degradation agents is an organized enzyme;

Sulplo-aluminate is sulphur magnesium aluminate, calcium sulphoaluminate;

Vitriol is sal epsom, sodium sulfate, calcium sulfate.

With the above-mentioned solidify material 25-30% (by weight percentage) for preparing with stir after the old rubbish 65-75% that handles mixes fixed, become induration, the material mechanical performance of this induration is that ultimate compression strength is 15-20mpa, and folding strength is 3.2-3.5mpa.

Description of drawings

Fig. 1 is a domestic refuse consolidation technique schema.

Beneficial effect of the present invention:

1, when handling domestic refuse, need not classify can be directly with different types of rubbish as raw material.

2, through handling the starting material that fixed material can be used as material of construction.

3, low in the pollution of the environment, utilization of waste material.

Embodiment

Concrete example below in conjunction with Fig. 1 domestic refuse consolidation technique flow process is further described the present invention, but does not limit the present invention.

Take by weighing 1700 grams and pulverize old rubbish, 280 gram sulfate dihydrate magnesium, 20 gram activating enzymes and stir, make old garbage degradation, descending chain stand-by.

Take by weighing 600 gram sulplo-aluminates, 350 gram silicate solidifying agent, 50 gram silicofluorides and make solidifying substance through stirring, the solidifying substance made from handle after the solidify material of the old rubbish and 30% (by weight percentage) handled by 70% (by weight percentage) of old rubbish mix and stir and make induration, this induration can be used as the starting material of material of construction, performance measurement ultimate compression strength is 15-20mpa, and folding strength is 3.2-3.5mpa.

Claims

1, a kind of life refuse processing method includes

(1), domestic refuse is degraded and descending chain in the presence of degradation agents;

(2), adopt sulplo-aluminate, silicate, silicofluoride, vitriol to be mixed with solidifying substance;

(3), the old rubbish after will handling is mixed in proportion, stirs fixed with the solidifying substance that is mixed with.

2, according to the described waste disposal method of claim 1, it is characterized in that handled domestic refuse does not need refuse classification, all directly handle.

3,, it is characterized in that the degraded of domestic refuse and the treatment formulations of descending chain are (by weight percentage) according to the described waste disposal method of claim 1:

Domestic refuse 85-92%

Sulfate dihydrate magnesium 7.8-14%

Degradation agents 0.2-1%

4,, it is characterized in that inorganic salt are vitriol, silicate, silicofluoride, sulplo-aluminate according to the described waste disposal method of claim 1.

5, according to the described waste disposal method of claim 1, it is characterized in that solidifying substance mesosilicic acid salt 30-40%, wherein sodium silicate accounts for 60%, and silicofluoride accounts for 5%.

6, according to the described waste disposal method of claim 1, the old rubbish 65-75% (by weight percentage) after it is characterized in that handling mixes stirring with solidifying substance 25-30% (by weight percentage) fixed.

7, according to the described waste disposal method of claim 1, old rubbish after it is characterized in that handling and the solidifying substance that is mixed with are mixed in proportion the induration of stirring, the starting material that are used to build.