CN210188021U - Full recovery processing system of municipal solid waste - Google Patents

Abstract

The utility model discloses a full recovery processing system for municipal solid waste, which comprises a composite sorting system, wherein the composite sorting system comprises screening equipment, winnowing equipment, light sorting equipment and magnetic separation equipment; after the domestic garbage is sorted by the composite sorting system, plastic, paper and metal substances are completely recycled, combustible materials are used as alternative fuels and sent into a cement kiln for incineration treatment, inorganic substances are used as cement firing raw materials and enter the cement kiln for raw material grinding treatment, and organic substances are subjected to composting treatment to form the organic fertilizer. The utility model discloses the full recovery processing system of municipal domestic waste utilizes the cement kiln to deal with in coordination, can make municipal domestic waste realize the target of zero release, stops secondary pollution's emergence.

Description

Full recovery processing system of municipal solid waste

Technical Field

The utility model relates to a municipal solid waste handles the technique, especially relates to a system for utilize cement kiln to handle municipal solid waste in coordination.

Background

With the rapid development of the urbanization process, the problem of various municipal domestic wastes with various manufacturing quantities is brought, the treatment mode of the municipal domestic wastes is also developed and advanced, and the resource recovery and the reutilization of the municipal domestic wastes become the inevitable trend of the municipal domestic waste treatment. In recent years, the environment protection and the treatment of urban domestic garbage are given high attention by our country, and a large amount of financial resources, material resources and manpower are invested.

At present, three harmless treatment modes of municipal solid waste in China include sanitary landfill, composting and incineration, but the three modes have the problems of low utilization efficiency, small scale, serious secondary pollution, large investment, poor economic operability and the like. Through the development of many years, the cooperative disposal of municipal solid waste by using a cement kiln has achieved many successful experiences. The cement kiln is utilized to cooperatively treat the municipal domestic garbage, the garbage can be used as raw materials/fuel, the consumption of resources is reduced, the high-temperature system of the cement kiln can be fully utilized to thoroughly treat harmful substances, and the diversified target requirements of harmlessness, resource utilization and intensification are really realized.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims to solve the technical problem that a full recovery processing system of municipal solid waste is provided, this processing system utilizes the cement kiln to deal with in coordination and can make municipal solid waste realize the target of zero release, stops secondary pollution's emergence.

The utility model has the following contents: in order to achieve the above object, the utility model adopts the following technical scheme:

a full recovery processing system of municipal solid waste comprises a composite sorting system, wherein the composite sorting system comprises screening equipment, winnowing equipment, light sorting equipment and magnetic separation equipment; after the domestic garbage is sorted by the composite sorting system, plastic, paper and metal substances are completely recycled, combustible materials are used as alternative fuels and sent into a cement kiln for incineration treatment, inorganic substances are used as cement firing raw materials and enter the cement kiln for raw material grinding treatment, and organic substances are subjected to composting treatment to form the organic fertilizer.

Wherein, the screening equipment is a triangle disk screen, the winnowing equipment is divided into a first winnowing equipment and a second winnowing equipment, the optical selection equipment is divided into a first optical selection equipment, a second optical selection equipment, a third optical selection equipment and a fourth optical selection equipment, a discharge port of the crusher is connected with the triangle disk screen, a first discharge port of the triangle disk screen is connected with an organic matter composting reactor, a second discharge port of the triangle disk screen is connected with the first winnowing equipment, a heavy matter discharge port of the first winnowing equipment is connected with a cement kiln raw material mill, a light matter discharge port of the first winnowing equipment is connected with the second winnowing equipment, a medium heavy matter discharge port of the second winnowing equipment is connected with the organic matter composting reactor, a light matter discharge port of the second winnowing equipment is connected with the first optical selection equipment, the remaining matter is transmitted to the second optical selection equipment after the first optical selection equipment selects paper, the remaining matter is transmitted to the third optical selection equipment after the second optical selection equipment selects the HDPE/LDPE film, and after the PP film is sorted out by the third optical separation equipment, the residual substances are transmitted to the fourth optical separation equipment, and after the PET is sorted out by the fourth optical separation equipment, the residual substances are transmitted to a cement kiln for incineration.

A magnetic separator is arranged on a connecting channel between the first discharge port of the triangular disc sieve and the organic matter compost reactor, magnetic substances are recovered after materials pass through the magnetic separator, and nonmagnetic substances are sent to the organic matter compost reactor; a magnetic separator is arranged on a connecting channel between a heavy material discharge port of the first winnowing device and the cement kiln raw material mill, magnetic materials are recovered after the materials pass through the magnetic separator, and nonmagnetic materials are sent into the cement kiln raw material mill; a magnetic separator is arranged on a connecting channel between a heavy material discharge port in the second winnowing device and the organic matter compost reactor, magnetic materials are recovered after the materials pass through the magnetic separator, and non-magnetic materials are sent into the organic matter compost reactor; the light material discharge port of the second winnowing device is connected with the first light separation device, a magnetic separator is arranged on the channel, magnetic materials are recovered after the materials pass through the magnetic separator, and non-magnetic materials are sent into the first light separation device.

The treatment method of the urban domestic garbage full-recovery treatment system comprises the following treatment processes:

crushing domestic garbage by a crusher to form garbage materials with the particle size of not more than 200-300 mm, feeding the garbage materials into a composite sorting system, sorting the materials with the particle size of less than 65mm by a screening device, carrying out organic matter composting process treatment on the materials with the particle size of more than 65mm, sequentially sorting heavy matters, medium heavy matters and light matters by twice winnowing devices, feeding the heavy matters (inorganic matters) subjected to winnowing as cement firing raw materials into a cement kiln for raw material grinding, carrying out organic matter composting process treatment on the medium heavy matters subjected to winnowing, sequentially sorting paper, HDPE/LDPE films, PP films and PET by four light sorting devices on the light matters subjected to winnowing, and feeding the combustible materials subjected to light sorting as fuel into the cement kiln for incineration; screening the organic matter composting process, taking the screened matter with the granularity smaller than 40mm as an organic fertilizer, taking the light matter with the granularity larger than 40mm after primary air separation as a substitute fuel to enter a cement kiln for incineration, and taking the heavy matter after air separation as a cement sintering raw material to enter the cement kiln for raw material grinding.

Wherein, the leachate generated in the sorting process enters a leachate treatment system for treatment.

Wherein, all set up magnetic separation equipment behind screening equipment and the sorting equipment and be used for retrieving ferrous metal material.

Wherein, the optical selection equipment is an NRT optical machine.

Compared with the prior art, the utility model discloses technical scheme has beneficial effect does:

the utility model discloses processing system integrates the degree height, can carry out comprehensive processing to municipal domestic waste through cement kiln in coordination, makes municipal domestic waste realize the target of zero release, stops secondary pollution's emergence, thoroughly realizes municipal domestic waste's resourceization, minimizing and innoxious.

Drawings

FIG. 1 is a process flow diagram of the municipal solid waste full-recycling treatment system of the present invention;

fig. 2 is a system schematic diagram of the municipal solid waste full-recycling treatment system of the utility model.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1-2, the utility model discloses a municipal solid waste full-recovery processing system, which comprises a composite sorting system, wherein the composite sorting system comprises a screening device, a winnowing device, a light sorting device and a magnetic separation device; after the domestic garbage is sorted by the composite sorting system, plastic, paper and metal substances are completely recycled, combustible materials are sent into a cement kiln as alternative fuels for incineration treatment, inorganic substances are used as cement firing raw materials and enter the cement kiln for raw material grinding treatment, and organic substances are subjected to composting treatment to form organic fertilizers; and (4) the leachate generated in the sorting process enters a leachate treatment system for treatment.

Wherein the screening equipment is a triangular disc screen, the winnowing equipment is divided into a first winnowing equipment and a second winnowing equipment, the optical sorting equipment is divided into a first optical sorting equipment, a second optical sorting equipment, a third optical sorting equipment and a fourth optical sorting equipment, a discharge port of the crusher is connected with the triangular disc screen, a first discharge port of the triangular disc screen is connected with an organic matter composting reactor, a second discharge port of the triangular disc screen is connected with the first winnowing equipment, a heavy matter discharge port of the first winnowing equipment is connected with a cement kiln raw material mill, a light matter discharge port of the first winnowing equipment is connected with the second winnowing equipment, a medium heavy matter discharge port of the second winnowing equipment is connected with the organic matter composting reactor, a light matter discharge port of the second winnowing equipment is connected with the first optical sorting equipment, the first optical sorting equipment transfers residual matters to the second optical sorting equipment after sorting paper, and the second optical sorting equipment transfers the residual matters to the third optical sorting equipment after the HDPE/LDPE film is sorted by the second, and after the PP film is sorted out by the third optical sorting equipment, the residual substances are transmitted to the fourth optical sorting equipment, and after the PET is sorted out by the fourth optical sorting equipment, the residual substances are transmitted to a cement kiln.

A magnetic separator is arranged on a connecting channel between the first discharge port of the triangular disc sieve and the organic matter compost reactor, magnetic substances are recovered after materials pass through the magnetic separator, and non-magnetic substances are sent to the organic matter compost reactor; a magnetic separator is arranged on a connecting channel between a heavy material discharge port of the first winnowing device and the cement kiln raw material mill, magnetic materials are recovered after the materials pass through the magnetic separator, and nonmagnetic materials are sent into the cement kiln raw material mill; a magnetic separator is arranged on a connecting channel between a heavy material discharge port in the second winnowing device and the organic matter compost reactor, magnetic materials are recovered after the materials pass through the magnetic separator, and non-magnetic materials are sent into the organic matter compost reactor; the light material discharge port of the second winnowing device is connected with the first light separation device, a magnetic separator is arranged on the channel, magnetic materials are recovered after the materials pass through the magnetic separator, and non-magnetic materials are sent into the first light separation device.

After the municipal domestic garbage is grabbed onto the feeding machine through the grab bucket, the municipal domestic garbage is uniformly fed into the crusher through the feeding machine, and the crusher breaks and crushes the municipal domestic garbage; the particle size of most of materials in the crushed domestic garbage is 200-300 mm, the crushed domestic garbage is sent to a composite sorting system, the crushed domestic garbage is firstly subjected to a preselection platform to remove large garbage, the preselection domestic garbage is screened by a triangular disc to select materials with the particle size of less than 65mm to be subjected to organic matter composting process treatment, the materials with the particle size of more than 65mm enter two winnowing devices to be sorted into heavy materials, medium heavy materials and light materials, wherein the heavy materials such as brick and tile ceramics and the like enter a cement kiln raw material mill as inorganic waste (as cement sintering raw materials) to be subjected to organic matter composting process treatment, the winnowed light materials enter four winnowing devices in sequence, the four winnowing devices are respectively provided with different parameters, so that paper, HDPE/LDPE films, PP films and PET are sorted, the paper, HDPE/LDPE films, PP films and PET are respectively enter corresponding material storage bins after manual quality inspection and impurity removal, then packaging the mixture by a packaging machine for sale; the combustible substances after light separation can be used as alternative fuels to enter a cement kiln for incineration; after the organic matter composting process is screened, the substances with the granularity smaller than 40mm are sold as organic fertilizers, the substances with the granularity larger than 40mm are subjected to primary air separation, the light substances are used as alternative fuels to enter a cement kiln to be incinerated, and the heavy substances are used as cement sintering raw materials to be sent to a raw material mill to be treated. Magnetic separators are arranged behind the triangular disc sieve and the winnowing machine to recover ferrous metal substances.

Crushing garbage: the particle size of the garbage primarily crushed by the crusher is 200-300 mm; screening the garbage: the crushed garbage enters a triangular disc sieve after passing through a preselection platform, the screening granularity of the triangular disc sieve is 65 x 65mm, and the crushed garbage is divided into oversize products and undersize products after being screened; wherein, oversize material enters organic matter compost process, undersize material enters the air separation system; winnowing of garbage: separating medium heavy matters and heavy matters by two-stage winnowing, wherein the heavy matters mainly comprise inorganic wastes such as tile ceramics and the like, and enter a cement kiln raw material mill for disposal, and the medium heavy matters enter an organic matter composting process; garbage light sorting: the light objects after air separation enter a four-channel light separator system, are divided into paper, HDPE & LDPE films, PP films and PET, and enter a storage bin for storage after manual quality inspection and impurity removal; garbage composting: after the organic matter compost is screened, 0-40mm of substances are sold as organic fertilizers, and oversize products larger than 40mm enter a winnowing machine. Recyclable paper, HDPE & LDPE film, PP film, PET and the like which are subjected to the optical separation system are directly sold to a company for recycling resources as products; in the organic matter composting process, the light matters after air separation are used as substitute fuel to be burnt in a cement kiln, and the heavy matters are subjected to raw material grinding and synergistic treatment in the cement kiln.

The utility model discloses utilize cement kiln to deal with the municipal solid waste system in coordination and classify the municipal solid waste into four types through the preliminary treatment, wherein recoverable paper, PP, PE, PET and metal, sell for the company of resource recovery as the product directly; the undersize materials are mainly organic matter materials, impurities are removed after composting and the organic matter compost is sold, and compost products can be used as greening soil for gardens, roads, landscapes and the like; the miscellaneous plastics, cloth, rubber and other combustible materials separated from the garbage and having lower recovery value can be used as alternative fuel to enter a cement kiln for incineration due to high heat value; the chemical components of inorganic materials such as brick, tile and ceramics are similar to the auxiliary materials of cement plants, and the inorganic materials can be used as cement firing raw materials and sent to a raw material mill for treatment. The utility model discloses the system can realize rubbish resourceization, minimizing and innocent treatment.

Wherein, the organic matter composting process adopts a semi-dynamic aerobic process, and the fermented materials are turned over, pushed, moved and the like at certain time intervals. The composting process is a continuous process, microorganisms are transferred from the fermented materials to new materials, and strain microorganisms do not need to be cultured again, so that the aerobic fermentation period is shortened.

The leachate treatment system adopts a treatment mode with pretreatment, an upflow anaerobic sludge blanket reactor, a membrane bioreactor and reverse osmosis as a core.

Claims (4)

1. The utility model provides a full recovery processing system of municipal solid waste which characterized in that: the device comprises a composite sorting system, wherein the composite sorting system comprises screening equipment, winnowing equipment, optical sorting equipment and magnetic separation equipment; after the domestic garbage is sorted by the composite sorting system, plastic, paper and metal substances are completely recycled, combustible materials are used as alternative fuels and sent into a cement kiln for incineration treatment, inorganic substances are used as cement firing raw materials and enter the cement kiln for raw material grinding treatment, and organic substances are subjected to composting treatment to form the organic fertilizer.

2. The municipal solid waste full-recycling treatment system according to claim 1, wherein: the screening equipment is a triangular disc screen, the winnowing equipment is divided into first winnowing equipment and second winnowing equipment, the optical selection equipment is divided into first optical selection equipment, second optical selection equipment, third optical selection equipment and fourth optical selection equipment, a discharge port of a crusher is connected with the triangular disc screen, a first discharge port of the triangular disc screen is connected with an organic matter composting reactor, a second discharge port of the triangular disc screen is connected with the first winnowing equipment, a heavy matter discharge port of the first winnowing equipment is connected with a cement kiln raw material mill, a light matter discharge port of the first winnowing equipment is connected with the second winnowing equipment, a medium heavy matter discharge port of the second winnowing equipment is connected with the organic matter composting reactor, a light matter discharge port of the second winnowing equipment is connected with the first optical selection equipment, the first optical selection equipment transmits residual matters to the second optical selection equipment after selecting paper, and the second optical selection equipment transmits the residual matters to the third optical selection equipment after selecting HDPE/LDPE films, and after the PP film is sorted out by the third optical separation equipment, the residual substances are transmitted to the fourth optical separation equipment, and after the PET is sorted out by the fourth optical separation equipment, the residual substances are transmitted to a cement kiln for incineration.

3. The municipal solid waste full-recycling treatment system according to claim 2, wherein: a magnetic separator is arranged on a connecting channel between the first discharge port of the triangular disc sieve and the organic matter compost reactor, magnetic substances are recovered after materials pass through the magnetic separator, and non-magnetic substances are sent to the organic matter compost reactor; a magnetic separator is arranged on a connecting channel between a heavy material discharge port of the first winnowing device and the cement kiln raw material mill, magnetic materials are recovered after the materials pass through the magnetic separator, and nonmagnetic materials are sent into the cement kiln raw material mill; a magnetic separator is arranged on a connecting channel between a heavy material discharge port in the second winnowing device and the organic matter compost reactor, magnetic materials are recovered after the materials pass through the magnetic separator, and non-magnetic materials are sent into the organic matter compost reactor; the light material discharge port of the second winnowing device is connected with the first light separation device, a magnetic separator is arranged on the channel, magnetic materials are recovered after the materials pass through the magnetic separator, and non-magnetic materials are sent into the first light separation device.

4. The municipal solid waste full-recycling treatment system according to claim 2, wherein: the optical selection equipment is an NRT optical machine.

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