CN101757973A - Industrial water processing method for domestic garbage - Google Patents

Abstract

The invention discloses an industrial water processing method for domestic garbage, which is characterized in that: after the domestic garbage is repeatedly soaked, ground and washed, the waste is respectively reprocessed and reused after being dried in the air, pressed, parched, winnowed and artificially classified; the water after washing the domestic garbage is soaked and precipitates into semifluid precipitate, and then, the semifluid precipitate can be directly sent into a biogas pool to ferment for generating biogas for living or electricity generation and the like. In the invention, the processing method is simple; the necessary devices are the conventional devices, thereby having easy operation and saving land resources occupied by open compost or sanitary landfill; and according to the amount of the disposed waste, processing plants or processing factories with different specifications and different automation degrees can be carried out; the method can be carried out based on local conditions, and is flexible with small investment and fast effect, thereby being fit for arbitrary application in large, medium and small cities; the processing method has reasonable technique, no incineration exists during processing, and the generated waste precipitate is directly sent to the biogas pool to generate biogas without generating secondary pollution, thereby being beneficial for environment protection, therefore, the processing method has very remarkable social, environmental and economic benefits.

Description

The batch production water washing treatment method of house refuse

Technical field

The present invention relates to the processing method of house refuse, is a kind of batch production water washing treatment method of house refuse specifically.

Background technology

Fast development and quickening of urbanization process along with economic society, the output of China's domestic waste just constantly increases with the speed that surpasses about 5-10% every year, the house refuse pollution problems becomes increasingly conspicuous, occupying a large amount of soils forms the garbage-surrounded city phenomenon, produces a large amount of toxic and harmful contaminated environment, have a strong impact on the town environment sanitary condition and the people's quality of life, become one of the energy that economic development now runs into and two bottlenecks of garbage disposal.

The processing method of house refuse has substantially at present: methods such as burning disposal, open-air compost, sanitary landfills, fermentation process.The secondary pollution of the pernicious gases such as dioxin that burning disposal produces is far longer than the harm of house refuse for the healthy threat that brings of people; Open-air compost, sanitary landfills etc. can form new pollution sources, cause the secondary pollution of domestic rubbish disposal; Other processing method mostly needs specialized apparatus, and investment is big, does not all reach the requirement of innoxious, minimizing and recycling treatment, can not reach the real purpose that solves garbage-surrounded city and environmental pollution.

Summary of the invention

The objective of the invention is at above-mentioned deficiency, a kind of batch production water washing treatment method of investing the house refuse little, that equipment is simple, treatment effect is good is provided.

The batch production water washing treatment method of this house refuse mainly comprises the steps:

(1) soaking and washing: house refuse is sent in the net cage, dropped in the soak vat again and soak, and the rubbish mechanical crushing is become the fragment of 50-300 millimeter, continuous dipping 3-5 hour;

(2) control water: net cage is mentioned nature control water, and then press the residual moisture that goes in the rubbish, and send in the soak vat with the heavy iron of 5-10 ton;

(3) repeatedly after (1) and (2) step, the rubbish that press dry dried under 100-120 ℃ of temperature conditions to moisture content be no more than 5-8%, rubbish after the oven dry filters out waste or used plastics class rubbish and carries out after-treatment or reprocessing utilization respectively through selection by winnowing, manual sort;

(4) precipitation: the water behind the soaking and washing rubbish in the soak vat, after natural sedimentation 5-10 hour, discharge the clear water on soak vat top, with the semifluid sediment of soak vat bottom, send into fermentation generation biogas in the methane-generating pit.

The unique distinction of life refuse processing method of the present invention is, with house refuse at first through soak repeatedly, washing processing procedures such as pulverizing, cleaning, with water-soluble material in the 70-80% rubbish, separate by soaking the setting-out extraction, form the semifluid sediment through precipitation and send into the direct biogas of making in the methane-generating pit, be used for life or generating etc. and comprehensively utilize again.

The beneficial effect that the present invention gives prominence to is:

1, processing method is simple, equipment needed thereby is general conventional equipment, implements easily, can save open-air compost or the shared land resource of sanitary landfills rubbish, can implement the domestic rubbish disposal workshop or the factory of different size, different automaticities according to the quantity of disposal of refuse.

2, processing method suit measures to local conditions, flexible, little, the instant effect of investment, generally between ten thousand yuan of 500-1000, the operating period, long general fixed assets one-time investment can use 20-50 in equipment investment, can supply large, medium and small city select applied range arbitrarily for use.

3, processing method technology is reasonable, does not burn in the processing procedure, and the waste precipitate of generation is directly sent produced by methane-generating pit biogas, does not produce secondary pollution, helps environmental protection, has social benefit, environmental benefit and the economic benefit of highly significant.

The specific embodiment

Below in conjunction with embodiments of the invention the present invention is further described, but the present invention is not limited to embodiment, those of ordinary skills do some modification with technical solution of the present invention, still in protection domain of the present invention.

Embodiment: the workshop is handled in the batch production washing of handling 1000 tons of house refuses in a kind of day

Per diem handle the scale of 1000 tons of house refuses, build between the house refuse cleaning Vehicle of closed, building 3 in the workshop side by side is the soak vat of 30 * 25 * 5 (length * wide * height) rice, be provided with discharge port below the soak vat, have operation path under the discharge port, and be equipped with semifluid sediment transport vehicle.Opposite side in the workshop is respectively equipped with between setting-out platform, dry house, selection by winnowing, manual sort's bolting house etc., and is equipped with auxiliary equipment such as corresponding straddle truck, mechanical agitation pulverizer, heavy iron, transport tape according to the concrete condition in place.Dry house can be selected low ebb electricity, combustion gas or solar energy hot for use, particularly can heat as the energy with biogas that produces after the disposal of refuse of the present invention or biogas electricity, and workshop all departments can take plane or three-dimensional layout, to reduce floor space to greatest extent.

The batch production washing of house refuse is handled, and comprises the steps:

(1) house refuse is sent into respectively in 20 net cages of 5 * 5 * 4 (length * wide * height) rice, net cage is dropped in the soak vat soak again, use the mechanical agitation pulverizer simultaneously respectively, rubbish is ground into the fragment of 50-300 millimeter, continuous dipping 5 hours.

(2) be placed on the setting-out platform after respectively net cage being mentioned nature control water with crane, be pressed in the net cage with the square or the circular dull and stereotyped heavy iron of straddle truck again, the residual moisture in the rubbish is extruded, send in the soak vat again 10 tons of weights.

(3) repeatedly (1) and (2) step is respectively in 3 soak vats, after the immersion, mechanical agitation, pulverizing 3 times, the rubbish that press dry is sent into dry house respectively, under 100-120 ℃ of temperature conditions, carry out disinfection, sterilization and dry to moisture content and be no more than 5-8%, rubbish after the oven dry filters out waste or used plastics class rubbish etc. through conventional selection by winnowing, manual sort, carries out after-treatment or reprocessing utilization respectively.

(4) water in the soak vat is after 8 hours natural sedimentation, discharge the clear water on soak vat top, to be deposited in the semifluid sediment of soak vat bottom, the discharge port below soak vat is discharged to the sediment transport vehicle, is transported to methane-generating pit ferment making biogas and is used for generating.

Embodiment shows that the outstanding feature of the batch production water washing treatment method of this house refuse is by water-washing process such as immersion, pulverizing, stirrings, the material soluble in water more than 80% in the rubbish effectively can be separated.The contained moisture of semifluid waste precipitate of 80% after the separation just near the required water consumption of biogas fermentation, therefore can directly send methane-generating pit ferment making biogas, and no any sewage is discharged in the processing procedure, does not also have other secondary pollution.

Waste precipitate in the methane-generating pit produces marsh gas power generation through 8-10 month yeast phase and uses, after biogas uses up substantially, residue can also be dried to moisture content 5-8% and pulverize, and sift out through 10 * 10 millimeters mesh screens and to make first-class good fertilizer, chesson, increase fertility help crops and increase; Methane liquid also can be used to water the soil, spray the blade face destroys plant diseases and insect pests etc., all has good effect; Utilize rubbish to form marsh gas power generation, be a kind of usefulness new forms of energy not to the utmost, environmental; Simultaneously, implement the batch production washing of this house refuse and handle the workshop, can also solve a large amount of labour employments.Therefore, the social benefit, environmental benefit and the economic benefit that have highly significant.

Claims (1)

1. the batch production water washing treatment method of a house refuse is characterized in that comprising the steps:

(1) soaking and washing: house refuse is sent in the net cage, dropped in the soak vat again and soak, and the rubbish mechanical crushing is become the fragment of 50-300 millimeter, continuous dipping 3-5 hour;

(2) control water: net cage is mentioned nature control water, and then press the residual moisture that goes in the rubbish, and send in the soak vat with the heavy iron of 5-10 ton;

(3) repeatedly after (1) and (2) step, the rubbish that press dry dried under 100-120 ℃ of temperature conditions to moisture content be no more than 5-8%, rubbish after the oven dry filters out waste or used plastics class rubbish and carries out after-treatment or reprocessing utilization respectively through selection by winnowing, manual sort;

(4) precipitation: the water behind the soaking and washing rubbish in the soak vat, after natural sedimentation 5-10 hour, discharge the clear water on soak vat top, with the semifluid sediment of soak vat bottom, send into fermentation generation biogas in the methane-generating pit.