A kind of domestic garbage resource processing method
Technical field
The present invention relates to a kind of life refuse processing method, especially a kind of domestic garbage resource processing method.
Background technology
House refuse refers in city dweller's daily life or provides for the daily life of urban life people produce in the activity of service, can't utilize in certain hour and place and solid, the semi-solid waste material of the contaminated environment that abandons.In recent ten years, China's domestic waste annual production reaches more than 100,000,000 ton, and annual rate increase with 8%-10%.Rubbish year, handling rate had only 50%, and actual rubbish processing to be harmless rate only has 30%, had become the pressing problem that our country faces so the processing of house refuse is disposed.
At present, city house refuse treatment method mainly contains:, sanitary landfill method, incineration disposal method, biological compost method and synthesization facture etc.
The subject matter that sanitary landfills exists: produce a large amount of percolates, as deal with improperly, may cause the severe contamination of the face of land, underground and rivers and creeks water, the uncontrollable biogas that produces after the landfill house refuse in addition, not only surrounding enviroment being caused serious harm, also is the main arch-criminal who causes Global Greenhouse Effect, climate warming simultaneously, and landfill need take a large amount of soils, and non-renewable utilization, most importantly now at home some cities prohibited the landfill crude waste.
The subject matter that burning method exists: investment is big, the operating cost height, be easy to generate all kinds of harmful materials in the combustion process, carcinogen such as notorious De bioxin particularly, in modes such as gas, lime-ash, waste water, penetrate into gradually in the environment of ours on every side, to causing catastrophic serious consequence future, therefore be difficult to realize innoxious and the target full dose resource.
The subject matter that the biological compost method exists: the disposal field is big; The compost time is long; Stink is dense, and is wayward; Be subject to climatic effect; Product quality is not high; Fertilizer efficiency is lower; Product is difficult to sell; Impact bigger to sanitary influence.
Summary of the invention
The invention provides the sorting of a kind of realization house refuse degree of depth, various sorting product is all recycled, and realizes the domestic garbage resource processing method of the full dose resource of house refuse.
Realize the domestic garbage resource processing method of the object of the invention, comprise the steps:
(1) rubbish is finished automatically weigh, record; By the even sub-material of uniform distribution device, then rubbish is sent on the belt conveyor;
(2) belt carries rubbish at first through entering artificial roughing chamber after the bag-breaking machine fragmentation, sorts Bulky Waste (as brick, tile fragment, timber etc.), and these Bulky Wastes are handled together with the similar rubbish that follow-up separation goes out;
(3) rubbish through magnetic separation and selection by winnowing, in the magnetic separation is sorted out the ferrous metal in the rubbish after roughly selecting, and in the selection by winnowing plastics in the rubbish is sorted out;
(4) house refuse is entered the rotary screen wet concentration that the aperture is 20mm, particle diameter mainly is inorganic matters such as the less sand of particle diameter, brick and tile, grit less than the screenings of 20mm, sinks to bottom, wet concentration pond and discharges, and can do the building materials utilization;
(5) again house refuse is entered magnetic separation, enters aperture, second road again greater than the rotary screen wet concentration of 100mm, wherein particle diameter at the rubbish of 20mm and 100mm through entering efficient composite anaerobic system after the crushing and beating; Particle diameter is greater than the rubbish of 100mm, through filtering out plastics, combustible, non-ferrous metal etc. after selection by winnowing and the artificial thin choosing;
(6) combustible (as woodwork, squeeze and paper products etc.) that sub-elects in described step (2), (3), (4), (5) can be made into fuel slug and sends into boiler combustion, the slag that forms after the boiler combustion is used for brickmaking, both reduce the residue processing, reduced the fuel consumption of project operation again; In plastics, the rubber-like rubbish, the heavy plastics that a part can not be recycled is sold as waste product, and the recyclable light plastic of another part can carry out plastic granulating; Glass, grit class rubbish then can be done building materials utilization (as building materials such as porous brick processed, non-bearing building block, pavior bricks); Organic matter enters efficient composite anaerobic digestive system, produces biogas;
(7) percolate that produces in the waste transportation process enters beating schedule after simple process, the waste water after the waterpower sorting enters follow-up sewage disposal system;
(8) the natural pond liquid of efficient composite anaerobic digestive system generation enters together with flushing plastics, ground, machinery and various hygiene water and is back to beating schedule after sewage disposal system is handled.
The beneficial effect of domestic garbage resource processing method of the present invention is as follows:
Domestic garbage resource processing method of the present invention digests the domestic garbage comprehensive treatment technology that combines with mechanical pretreatment and bio anaerobic, by mechanical pretreatment house refuse is carried out sufficient sorting, sub-elects metal successively; Combustible: plastics, yarn fabric etc.; Inorganic sand grains material; Can biochemical organic substance.Metal recovery is utilized; Combustible is made fuel gas; Inorganic sand grains is made construction material; Can adopt anaerobic digestion techniques to produce biogas by biochemical organic substance.Realize the sorting of the house refuse degree of depth; Various sorting products are all recycled, and realize the full dose resource of house refuse; Floor space is less, and investment cost is low; Operation expense is low, the automaticity height; Environment is not caused secondary pollution; House refuse daily output day is clear, realizes the maximum resourceization of house refuse.
Description of drawings
Fig. 1 is the flow chart of domestic garbage resource processing method of the present invention.
The specific embodiment
As shown in Figure 1, domestic garbage resource processing method of the present invention comprises the steps:
(1) waste transportation pulls in, the electronic vehicle weighing apparatus dynamic weighing by weighbridge office at the uniform velocity, finish automatically weigh, record; Transfer car(buggy) enters unloading station, and rubbish is discharged into unloading in the feed bin in the branch route selection; Apron conveyor by the even sub-material of uniform distribution device, is sent rubbish into rubbish on the belt conveyor then;
(2) belt carries rubbish at first through entering artificial roughing chamber after the bag-breaking machine fragmentation, and letter sorting Bulky Waste (as brick, tile fragment, timber etc.) is thrown in the uncovered collection box under the roughing chamber, and these refuses are handled together with the similar refuse that follow-up separation goes out;
(3) through sending into two-stage rotary screen wet concentration by slat conveyer after magnetic separation and the selection by winnowing, rotary screen becomes three parts with sieving garbage to rubbish after roughly selecting: greater than the oversize of 100mm, less than the screenings of 20mm and the middle material of 20~100mm;
(4) house refuse enters the rotary screen that the aperture is 20mm, and particle diameter mainly is inorganic matters such as the less sand of particle diameter, brick and tile, grit less than the screenings of 20mm, sinks to bottom, wet concentration pond and discharges, and can do the building materials utilization;
(5) particle diameter enters the rotary screen wet concentration that aperture, second road is 100mm greater than oversize and the heavy burder of 20mm after magnetic separation, and wherein sieve middle material down is that particle diameter enters efficient composite anaerobic system after the rubbish of 20mm and 100mm passes through crushing and beating; Oversize is that particle diameter is greater than the rubbish of 100mm, through filtering out plastics, combustible, non-ferrous metal etc. after selection by winnowing and the artificial thin choosing;
(6) combustible that sub-elects through separation system such as woodwork, squeeze and paper products etc. can be made into fuel slug and send into boiler combustion, and the slag that forms after the boiler combustion is used for brickmaking, has both reduced the residue processing, have reduced the fuel consumption of project operation again; The heavy plastics that a part such as plastics, rubber can not be recycled is sold as waste product, and the recyclable light plastic of another part can carry out plastic granulating; Glass, grit etc. then can be done the building materials utilization as building materials such as porous brick processed, non-bearing building block, pavior bricks; Organic matter enters efficient composite anaerobic digestive system, produces biogas;
(7) produce percolate hardly in the whole recycling treatment process; The percolate that produces in the waste transportation process enters beating schedule after simple process, the waste water after the waterpower sorting enters follow-up sewage disposal system;
(8) the natural pond liquid of efficient composite anaerobic digestive system generation enters together with flushing plastics, ground, machinery and various hygiene water and is back to beating schedule after sewage disposal system is handled.
Embodiment recited above is described preferred embodiment of the present invention; be not that scope of the present invention is limited; design under the spiritual prerequisite not breaking away from the present invention; various distortion and improvement that the common engineers and technicians in this area make technical solution of the present invention all should fall in the definite protection domain of claims of the present invention.