CN1654434A

CN1654434A - Urban domestic garbage comprehensive treatment technology

Info

Publication number: CN1654434A
Application number: CNA2004100043037A
Authority: CN
Inventors: 薛占何
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-02-13
Filing date: 2004-02-13
Publication date: 2005-08-17

Abstract

The technological process of treating domestic garbage comprehensively includes artificially pre-sorting to separate recovered matter, mechanical sorting to separate organic matter for making fertilizer and percolate for fertilizer humidity regulation, producing compost with organic matter, incinerating useless matter, making brick, heat energy utilizing for producing fertilizer and brick, etc. The fume is desulfurized and dedusted before exhaust via chimney, and the compost may be further processed to for different composite organic fertilizer products.

Description

Domestic garbage comprehensive treatment technology

Affiliated technical field

The present invention relates to a kind of Technology of domestic refuse being carried out comprehensive treating process.It is the characteristics at China's domestic waste " amount is big, load in mixture, combustion value is low, organic height ", but but but domestic waste is carried out Recyclable composting thing brickmaking thing incinerated matter and the landfill material that pre-sorting and process sub-elect, handle respectively.

Background technology

The treatment process of China's domestic waste has at present: the one, and simple and easy landfill, this treatment process is banned use of by country owing to exist serious environmental to pollute; The 2nd, sanitary landfill, its shortcoming is that investment is big, and waste land resources is innoxious not obvious with minimizing, and recycling is difficult to also accomplish that especially area such as the coastland that the soil is lacked can't utilize this method; The 3rd, burning disposal is directly sent domestic refuse into incinerator exactly and is burnt, and its shortcoming is that investment is big, the working cost height, and no investment repayment progressively is eliminated; The 4th, burning electricity generation utilizes the heat energy power-generating of burning away the refuse and producing, and its shortcoming is that investment is big, and the working cost height though investment repayment is arranged, mainly is by policy support; The 5th, compost carries out aerobic or anaerobic composting with the organic moiety in the domestic refuse exactly, makes organic nutrient soil, and its shortcoming is the organic moiety in the treating refuse, and intermediate product in its production process and major part do not have the rubbish of compost treatment still to need landfill; The 6th, comprehensive treating process, this method has multiple array mode, most typical be burn with compost combine the additional plastic recovery that has and deep processing and metal recovery; The burning that has combines with brickmaking; Also have plenty of and adopt that compost combines with product biogas etc.Existing integrated conduct method is not accomplished recovery, organism compost, the lime-ash brickmaking after but Recyclable does not burn the brickmaking inorganics and burns Recyclable, the heat energy utilization of burning etc. and is combined.

Summary of the invention

In order to solve the shortcoming that existing city house refuse treatment method exists, this technology invented Recyclable reclaimed and the heat energy utilization of compost, burning, brickmaking and burning etc. is combined, to domestic rubbish disposal more completely, meet the integrated conduct method of China's domestic rubbish disposal " innoxious, minimizing, resource utilization " policy.

The present invention solves the technical scheme that its technical problem takes:

1, at being mixed with a spot of building waste in China's domestic waste, market rubbish and crop stalk and greening rubbish, and it is comparatively concentrated that these rubbish enter factory, under admixture, directly adopt the comparatively characteristics of difficulty of single treatment process, the invention of this technology will be advanced factory's domestic refuse and carried out artificial pre-sorting in the selected scenes with presorting of the next-door neighbour of comprehensive treating process factory earlier, sub-elect and should not remove landfill after the building waste sterilization of brickmaking; Should be used for brickmaking with lime-ash after the building waste sterilization of brickmaking; The vial that sub-elects, Plastic Bottle, bulk metal, nonmetal Recyclable, the keeping of can classifying, sale; Crop stalk in the rubbish, directly enter the composting process section after the organism fragmentation that lawn that food market rubbish and urban afforestation are pruned and shrub branch etc. are relatively concentrated, this process mainly reaches following purpose: the one, the charging stability of next process section there has been reliable guarantee; The 2nd, to the separation of bulk inorganics, accomplished the minimizing processing; The 3rd, recycling has been accomplished in recovery to Recyclable; The 4th, the separating organic matters of concentrating helps reducing the burning amount and improves calorific value, and can improve the quality of organic compost; The 5th, summer time, rubbish can obtain effective draining.

2, sieve after the rubbish after the pre-sorting is delivered to comprehensive treating process factory broken bag by belt conveyor, screen overflow enters the material to be burnt storehouse of incinerator again through simple picking after magnetic separation, screen underflow sieves once more, and a rubbish through 1.5 ∽ 10cm enters after magnetic separation and carries out aerobic compost in the biochemical storehouse.The grain through the following rubbish of 1.5cm and the grain through the above rubbish of 10cm through the magnetic separation mixed burning.

3, the rubbish behind the biochemistry is through screening, and screen overflow burns, and screen underflow carries out the secondary curing of compost, sieves after the slaking, and screen overflow burns, and screen underflow is made mixed organic manure through purify after drying, abrasive dust, batching, stirring, granule, drying of impurity elimination.

4, send treating that incinerated matter is sent in the incinerator by grab bucket and burning of material to be burnt storehouse, flue gas carries out flue gas behind waste heat boiler handles and enters atmosphere by chimney.

5, the steam of incinerator waste heat boiler generation is used for dry compost, compound fertilizer and machine made brick vapor cure through heat exchange, also can be used for generating simultaneously in larger treatment plant.

6, but lime-ash and the brickmaking building waste that sub-elects by ratio requirement are made finished products such as hollow brick, solid brick as brick producing material with other raw material building materials through fragmentation, and flying dust is landfill after solidifying.

7, the drop liquid that oozes of rubbish generation is used to regulate compost humidity.

The effect that the present invention is useful is: Recyclable reclaims, the organism composting, available inorganics of part and lime-ash brickmaking, dud burns, the heat energy that burns effectively utilizes, the domestic refuse that loads in mixture is fully classified and the progressively classification in treating processes, characteristic according to sorting rubbish is handled respectively, can reduce intractability, reduce working cost, improve the resource utilization degree, accomplish innoxious thoroughly, minimizing is obvious, resource utilization is abundant, realizes that domestic garbage comprehensive truly handles.

Description of drawings

Invention is described further to this technology below in conjunction with drawings and Examples

Fig. 1 is the schema of this technology invention

Embodiment

But but the invention of this technology is burned brickmaking construction garbage brick, heat energy utilization and supporting attached sub-technology and is formed by artificial pre-sorting, mechanical sorting, organism compost incinerated matter.

Advancing factory's domestic refuse enters and presorts the selected scenes, divide and obtain draining when picking Recyclable and removing landfill material, enter once screening then, screen underflow enters regrading, screen overflow enters aerobic compost through magnetic separation, and by the high pressure positive blower oxygen supply, the drop liquid that oozes that aerobic compost, go-no-go draining and material to be burnt storehouse produce enters equalizing tank, regulated by equalizing tank water when refuse moisture is not enough, the waste gas that aerobic compost produces enters the deodorization tank deodorizing.First compost behind the aerobic compost enters three screenings, and screen underflow carries out the secondary curing of compost, and the finished product compost after the slaking is through four screenings, and screen underflow can sell after impurity elimination, also can make finished product fertilizers.Once Shai Fen screen overflow enters the material to be burnt storehouse through the foreign material that the excess of the screen overflow of magnetic separation and three, four times screening, regrading extracts during through magnetic separation and impurity elimination from the finished product compost, giving incinerator by feeding system burns, the steam that the waste heat boiler of incinerator produces is through heat exchange, for composting drying and brickmaking maintenance.Flue gas after smoke processing system is handled by the chimney emptying.Finished product compost drying, abrasive dust enter organic powder storehouse, add N, P, K after automatic batching system, mixing stirring, granulation, drying, screening, cooling, packing are made mixed organic manure, after the unacceptable product fragmentation of screening, return to mix to stir and participate in granulation again.Should add gelatinous material through mixing stirring with lime-ash behind the construction waste crushing of brickmaking, make building brick, make finished bricks through maintenance by brick press.

Claims

1, a kind of domestic garbage comprehensive treatment technology.But but by pre-sorting, mechanical sorting, organism aerobic compost, system mixed organic manure incinerated matter burn the brickmaking building waste and burn the lime-ash brickmaking, the heat integration that produce, ooze that drop liquid utilizes and building waste that can not brickmaking with burn nine the main sub-technologies such as flyash curing landfill that produce and form.

2, according to claims 1 described technology, it is characterized in that: before domestic refuse enters production line, will pass through pre-sorting, rubbish is carried out preliminary classification, obtain draining simultaneously.

3, according to claims 1 described technology, it is characterized in that: by nine sub-technological processs and its organic combination, make domestic refuse respectively classify in composition and the treating processes in the middle of product, at material diversion with progressively obtain decrement in the assorting process, and realization harmless treatment and recycling.