CN1857805A

CN1857805A - Garbage treating and utilizing process for small town

Info

Publication number: CN1857805A
Application number: CNA2006100849220A
Authority: CN
Inventors: 薛占何
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-06-03
Filing date: 2006-06-03
Publication date: 2006-11-08

Abstract

The garbage treating and utilizing process for small town consists of the steps of manual sorting, incinerating, marsh gas production, etc. The sorting step separates out recyclables, building refuse and cinder to be land filled, and organic refuse to be crushed and anaerobically fermented in marsh gas pond, and rest part to be incinerated in the incinerating furnace. The fermentation step produces marsh gas for burning in the incinerating furnace and providing fuel gas outside and marsh gas residue to be dewatered to produce organic fertilizer. The incinerating furnace produces high temperature fume with heat further utilized, and cinder and fly ash to be land filled.

Description

Refuse of small town is handled and process for reclaiming

Technical field

The present invention relates to a kind of technology of refuse of small town being carried out harmless treatment and recycling.It is, distribute characteristics wide, complicated component little at China's refuse of small town output, and it is carried out sorting, classification, accomplishes the technology that Recyclable reclaims, combustible burns, organic matter fermentation produces biogas, inorganic refuse landfill.

Background technology

At present, the processing of China's municipal refuse mainly contains methods such as sanitary landfills, burning electricity generation, compost.Because generally all between 2-5 ten thousand people, also about 100,000 people, its rubbish daily output is all in 100 tons for maximum population in small towns for population in small towns.And, the rubbish source of samll cities and towns mainly comprises the following aspects, the one, domestic garbage, the 2nd, sneak into a certain amount of building waste of house refuse, the 3rd, the honeycomb coal ash, the 4th, based on samll cities and towns' market of farm produce rubbish of organic matter and combustible, the 5th, the town dweller afforests and garden planting rubbish, and the 6th, industrial enterprise of samll cities and towns rubbish.This has just determined refuse of small town to have that quantity is little, characteristics wide, complicated component distribute.So refuse of small town is little because of its quantity, does not possess the burning electricity generation scale; Coal ash content is excessive in the rubbish, and the content of organic matter is not suitable for compost treatment less; And the sanitary landfills investment is big, occupation of land is many, and as seen, treating method for urban garbage is not suitable for samll cities and towns.And the existing processing method of China's refuse of small town mainly contains: the one, and simple and easy landfill, this processing method is banned use of by country owing to exist serious environmental to pollute; The 2nd, easy open incineration, the shortcoming of this processing method is to cause environmental pollution, and also produces a large amount of pernicious gases in burning process; The 3rd, unordered stacking, the shortcoming of this processing method is to cause garbage-surrounded city, mosquitos and flies multiplies, and spreads disease, and not only influences the environment in cities and towns, is threatening simultaneously that the people's is healthy.

Summary of the invention

Handle the shortcoming that existing method exists in order to solve refuse of small town, this technology has invented that suitable refuse of small town handles, with the technology that Recyclable in the rubbish reclaims, combustible burns, organic matter fermentation produces biogas, inorganic refuse landfill.

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

1, carries out sorting, classification according to component of refuse

The building waste that mixes some at China's refuse of small town, the market of farm produce rubbish of inorganic refuses such as coal ash and some, agricultural crop straw, and these rubbish are marched into the arena comparatively concentrated, be difficult to characteristics with simple disposal methods, the present invention's rubbish of will marching into the arena carries out artificial separation, sub-elects Recyclable and sells; Sub-elect organic wastes such as market of farm produce rubbish, agricultural crop straw and enter the process for producing biogas section; Sub-elect simple and easy landfills such as bulk (greater than 10 centimetres) building waste and coal ash; Remaining rubbish all enters the burning process section.

2, handle respectively and recycling by the sorting rubbish characteristics

Organic waste is sent into the automation methane-generating pit after crushed, carries out anaerobic fermentation, and the biogas of generation uses for the resident through desulfurization, supercharging, and it is combustion-supporting to be used for incinerator simultaneously, makees organic fertilizer after the natural pond slag dehydration that the fermentation back produces and sells; Enter high-temperature flue gas that incineration furnace garbage produces after burning through waste heat boiler, smoke processing system handles after smoke stack emission, the hot water that waste heat boiler produces is used for heating and methane-generating pit heats up winter, burns the lime-ash landfill of back generation, the flyash curing landfill.

The effect that the present invention is useful is: handle by the classification to refuse of small town, reduced intractability, reduce disposal cost.Improve resident's fuel structure in disposal of refuse, and then help reducing the garbage disposal difficulty, form benign cycle, employing biogas is combustion-supporting and utilize heat energy to help reducing operating cost for the methane-generating pit combination that heat up winter.

Description of drawings

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

Accompanying drawing is the flow chart of this technology invention

The specific embodiment

The present invention is made up of artificial separation, burning, product biogas and supporting sub-technology.The rubbish of marching into the arena carries out artificial separation, and the Recyclable that sub-elects reclaims; Bulk building waste that sub-elects and coal ash landfill; The organic waste that sub-elects is sent into the automation methane-generating pit after crushed, carries out anaerobic fermentation, and the biogas of generation uses for the resident through desulfurization, supercharging, and it is combustion-supporting to be used for incinerator simultaneously, makes organic fertilizer after the natural pond slag dehydration that the fermentation back produces and sells; Residue rubbish enters incinerator, burn high-temperature flue gas that the back produces through waste heat boiler, smoke processing system handles after smoke stack emission, the hot water that waste heat boiler produces is used for heating and methane-generating pit heats up winter, burns the lime-ash landfill of back generation, the flyash curing landfill.

Claims

1, a kind of refuse of small town is handled and process for reclaiming, is made up of artificial separation, burning, product biogas and supporting sub-technology, it is characterized in that: at first rubbish is carried out sorting, classification.

2, technology according to claim 1 is characterized in that: organic waste carries out anaerobic fermentation after crushed, and it is combustion-supporting that the biogas of generation is used for incinerator.

3, technology according to claim 1 is characterized in that: enter the intensification in winter that the incineration furnace garbage hot water that high-temperature flue gas produces through waste heat boiler after burning is used for methane-generating pit.