CN113385264A

CN113385264A - Wet-type ball-milling wet separation treatment device and method for garbage

Info

Publication number: CN113385264A
Application number: CN202110716122.0A
Authority: CN
Inventors: 韩洪波; 齐利人
Original assignee: Shenzhen Yuhui Ecological Technology Co ltd
Current assignee: Jinmao Puning Ecological Technology Co ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2021-09-14
Anticipated expiration: 2041-06-25
Also published as: CN113385264B

Abstract

The invention relates to a wet ball-milling and water-separation treatment device and method for garbage, and belongs to the technical field of garbage treatment. Wet-type ball-milling water of rubbish selects processing apparatus, including the ball mill, the ball mill is equipped with the feed end that is used for handling rubbish, the feed end of grit-water separator is connected to the discharge end of ball mill, the light component of grit-water separator, mud and fine sand connect to get into the biax shredder through the overflow mouth and tear the light component and tear the feed end that gets into the sediment thick liquid pond below 30 millimeters again, the heavy object of grit-water separator passes through the feed end that big inclination band conveyer connects the ball mill, the ball mill next door is equipped with the high pressure positive blower who is used for absorbing the foul smell, high pressure positive blower's output lets in the sediment thick liquid pond through the pipeline, the bottom in sediment thick liquid pond is equipped with the sediment stuff pump, the output of sediment stuff pump passes through pipeline intercommunication whirl desander. Has the advantages that: the garbage sorting machine has the advantages of effective garbage sorting, resource recycling, simple structure and low treatment cost.

Description

Wet-type ball-milling wet separation treatment device and method for garbage

Technical Field

The invention belongs to the technical field of garbage treatment, and particularly relates to a wet-type ball-milling water separation treatment device and method for garbage.

Background

Garbage is generated along with the improvement of human civilization, and the quantity of the garbage is rapidly increased along with the development of economy, so that the garbage becomes a great public hazard.

The garbage mentioned in the invention comprises domestic garbage, kitchen garbage, stale garbage, construction garbage, decoration garbage, livestock died of illness, medical garbage and the like.

The household garbage is characterized by high water content and complex components, and the components can be divided into three categories: light components, heavy components, perishable components.

The light component mainly comprises: plastic, bamboo, fabric, etc.

The heavy components mainly comprise: masonry, glass, ceramic, metal, and the like.

The perishable components mainly include: food waste, waste paper, etc.

At present, the main garbage treatment methods at home and abroad comprise a composting method, a landfill method, a burning method and a mechanical sorting method.

The composting method has large floor area, long time consumption, easy breeding of mosquitoes and flies, odor emission and difficult formation of large-scale production, and the garbage compost product contains more glass and other impurities and is difficult to popularize and use.

The landfill method occupies a large area, needs anti-seepage treatment, and also needs to build a biogas recovery system and a percolate treatment plant, so that underground water and surrounding air are easily polluted, resources cannot be recycled, and the landfill method is increasingly difficult to implement in China with a large population and increasingly tense land resources.

The incineration method has large investment and high operating cost, the household garbage still needs to be piled and retted for dehydration before incineration and power generation, the efficiency is lower, and a large amount of non-combustible materials also enter the hearth to influence the incineration efficiency.

The mechanical sorting method adopts machinery to sort garbage into combustible substances, perishable components and inorganic substances, and the existing sorting equipment is difficult to adapt to complex garbage components, has low sorting efficiency and is difficult to popularize and apply on a large scale.

Therefore, a wet ball-milling and water-sorting garbage treatment device is provided to solve the defects in the prior art.

Disclosure of Invention

The invention provides a wet-type ball-milling water separation treatment device for garbage, which solves the technical problems that iron in the garbage is continuously ground in a ball mill, an oxide film is difficult to form, the state of 'zero-valent iron' is always kept, the property is active, and the iron reacts with refractory macromolecular organic matters in garbage liquid easily to decompose the organic matters into micromolecules which are easy to biochemically treat; the sediment is difficult to be extruded and dehydrated independently due to fine particles, and when the sediment is mixed with scum for extrusion and dehydration, the scum becomes a filter aid and can intercept a part of particles in the sediment; the scum becomes a filler for the growth of microorganisms, and under the action of aeration, the microorganisms continuously grow, absorb and decompose pollutants in water and release heat, so that the temperature of the liquid is raised, and the liquid is favorably recycled in a system; the aeration makes the hard-to-degrade pollutant (such as grease) in the water float to the liquid level, and the hard-to-degrade pollutant is not discharged from the slurry pump at the bottom until the hard-to-degrade pollutant is dissolved in the water, so that the biochemical treatment is easy.

The technical scheme for solving the technical problems is as follows: the wet ball-milling water-separation treatment device for garbage comprises a ball mill, wherein the ball mill is provided with a feeding end for treating garbage, the discharging end of the ball mill is connected with the feeding end of a sand-water separator, light components, slurry and fine sand of the sand-water separator are connected through an overflow port to enter a double-shaft shredder to shred the light components to below 30 mm and then enter a slurry pool, heavy objects of the sand-water separator are connected with the feeding end of the ball mill through a large-inclination belt conveyor, a high-pressure fan for absorbing odor and dust is arranged beside the ball mill, the output end of the high-pressure fan is introduced into the bottom of the slurry pool through a pipeline, a slurry pump is arranged at the bottom of the slurry pool, the output end of the slurry pump is communicated with a cyclone sand remover through a pipeline, the light components, the slurry and the fine sand of the cyclone sand remover all enter a spiral extrusion dehydrator through pipelines, the filtrate of the spiral extrusion dehydrator enters a precipitation tank through the extruded filtrate, the thick filtrate after the precipitation of the precipitation tank and the heavy object of the cyclone desander are connected with the feed end of the ball mill through pipelines, the thin filtrate in the precipitation tank is separated from scum through a scum partition plate and then is connected with the precipitation tank through an overflow pipeline, the bottom of the precipitation tank is provided with a sludge pump, and the output end of the sludge pump is connected with the feed end of the ball mill through a pipeline.

Has the advantages that:

1. the iron in the garbage is continuously ground in a ball mill, an oxidation film is difficult to form, the state of zero-valent iron is always kept, the property is active, and the iron reacts with the nondegradable macromolecular organic matters in the garbage liquid easily to decompose the organic matters into micromolecules which are easy to biochemically treat;

2. the sediment is difficult to be extruded and dehydrated independently due to fine particles, and when the sediment is mixed with scum for extrusion and dehydration, the scum becomes a filter aid and can intercept a part of particles in the sediment;

3. the scum becomes a filler for the growth of microorganisms, and under the action of aeration, the microorganisms continuously grow, absorb and decompose pollutants in water and release heat, so that the temperature of the liquid is raised, and the liquid is favorably recycled in a system; the high-pressure fan can absorb odor and dust, and can also provide oxygen required by growth for microorganisms in the slurry tank by utilizing the odor.

4. The aeration makes the hard-to-degrade pollutant (such as grease) in the water float to the liquid level, and the hard-to-degrade pollutant is not discharged from the slurry pump at the bottom until the hard-to-degrade pollutant is dissolved in the water, so that the biochemical treatment is easy.

Further, the top in slurry tank is equipped with the draught fan that is used for extracting the foul smell, the input of draught fan be connected with the pipeline of slurry tank upper portion confined space intercommunication.

The beneficial effect of adopting the further scheme is that: can absorb odor, avoid polluting the environment and influence the work of workers.

Furthermore, a partition plate for separating scum is arranged in the settling tank, so that the scum is prevented from entering the settling tank along with the dilute filtrate.

The beneficial effect of adopting the further scheme is that: separating out the scum.

Further, a flocculating agent is added in a pipeline between the sedimentation tank and the sedimentation tank.

The beneficial effect of adopting the further scheme is that: can rapidly separate solid and liquid.

Further, a valve is arranged on a pipeline between the bottom of the settling tank and the feeding end of the ball mill.

The beneficial effect of adopting the further scheme is that: causing the weak filtrate and the scum to flow out of the respective overflow ports.

The wet ball-milling wet separation treatment method for garbage is characterized in that the wet ball-milling wet separation treatment device for garbage comprises the following steps:

s1: conveying the garbage into a ball mill for ball milling treatment;

s2: performing light-weight separation on the garbage subjected to ball milling treatment by using a sand-water separator to separate out light components, slurry and fine sand;

s3: repeating the step S1 on the heavy object separated by the sand-water separator, and feeding the separated light component, slurry and fine sand into a double-shaft shredder to shred the light component to below 30 mm and then feeding the light component into a slurry tank for precipitation treatment;

s4: sending the mixture of the scum and the bottom mud after the precipitation treatment into a cyclone sand separator through a scum pump to separate heavy objects, then sending the mixture into a spiral extrusion dehydrator to perform filter pressing dehydration, separately treating the obtained filter residue, and sending the obtained filtrate into a precipitation tank to perform precipitation and scum separation treatment;

s5: and repeating the step S1 on the concentrated filtrate after the scum precipitation and separation treatment, the scum and the heavy object separated by the cyclone sand separator, feeding the dilute filtrate after the scum precipitation and separation treatment into a sedimentation tank, and repeating the step S1 on the bottom mud in the sedimentation tank to obtain clarified filtrate for sewage treatment.

Has the advantages that: the treatment process is simple, the cost is low, and the garbage can be quickly and effectively sorted and recycled.

Further, in step S4, a slurry pump is disposed at the bottom of the slurry tank to convey the mixture of the scum and the sediment to the cyclone desander, and a partition plate is disposed in the settling tank.

Further, in step S5, a sludge pump for conveying the bottom sludge to the ball mill is provided at the bottom of the sedimentation tank.

Drawings

FIG. 1 is a schematic structural view of the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1. a ball mill; 2. a high pressure fan; 3. a sand-water separator; 4. a double-shaft shredder; 5. a slurry tank; 6. a slurry pump; 7. a cyclone desander; 8. a screw extrusion dehydrator; 9. a settling tank; 10. a partition plate; 11. a sedimentation tank; 12. a sludge pump; 13. an induced draft fan.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

Example 1

As shown in fig. 1, this embodiment provides a wet ball-milling water separation treatment device for garbage, including ball mill 1, ball mill 1 is equipped with the feed end that is used for handling garbage, the feed end of grit-water separator 3 is connected to the discharge end of ball mill 1, the light component of grit-water separator 3, mud and fine sand connect through the overflow mouth and get into biax shredder 4 and tear the light component to below 30 millimeters reentrant sediment thick liquid pond 5, the heavy object of grit-water separator 3 passes through the large inclination band conveyer and connects the feed end of ball mill 1, ball mill 1 next door is equipped with high pressure positive blower 2 that is used for absorbing foul smell and dust, the output of high pressure positive blower 2 lets in through the pipeline sediment thick liquid pond 5 bottom, the bottom of sediment thick liquid pond 5 is equipped with sediment stuff pump 6, the output of sediment thick liquid pump 6 passes through pipeline intercommunication cyclone sand remover 7, the light component of cyclone sand remover 7, Mud and fine sand all get into screw extrusion hydroextractor 8 through the pipeline, screw extrusion hydroextractor 8 gets into precipitation tank 9 through the filtrating that the extrusion produced, concentrated filtrate after the precipitation of precipitation tank 9 with the heavy object of whirl desander 7 is together through the pipe connection the feed end of ball mill 1, the top in sediment thick liquid pond 5 is equipped with the draught fan 13 that is used for extracting the foul smell, the input of draught fan 13 is connected with the pipeline with the airtight space intercommunication in sediment thick liquid pond upper portion, be provided with the baffle 10 that is used for separating the dross in the precipitation tank 9, make the dross avoid entering along with rare filtrate in the precipitation tank 11 precipitation tank 9 with add the flocculating agent in the pipeline between the precipitation tank 11, the bottom of precipitation tank 9 with be equipped with the valve on the pipeline between the feed end of ball mill 1.

s1: conveying the garbage into a ball mill 1 for ball milling treatment;

s2: performing light-weight separation on the garbage subjected to ball milling treatment by using a sand-water separator 3 to separate out light components, slurry and fine sand;

s3: repeating the step S1 on the heavy object separated by the sand-water separator 3, and feeding the separated light component, slurry and fine sand into a double-shaft shredder to shred the light component to below 30 mm and then feeding the light component into a slurry tank 5 for precipitation treatment;

s4: sending the mixture of the scum and the bottom mud after the precipitation treatment into a cyclone sand separator 7 through a slag slurry pump 6 to separate heavy objects, then sending the mixture into a spiral extrusion dehydrator to carry out filter pressing dehydration, carrying out additional treatment on the obtained filter residue, and sending the obtained filtrate into a precipitation tank 9 to carry out precipitation and scum separation treatment;

Further, in step S4, a slurry pump 6 is disposed at the bottom of the slurry tank 5 for delivering the mixture of the scum and the sediment to the cyclone sand remover 7; a partition plate 10 is arranged in the settling tank 9.

Further, in step S5, a sludge pump 12 for delivering the bottom sludge to the ball mill 1 is provided at the bottom of the sedimentation tank 11.

The domestic garbage related in the application has high water content and complex components, and the components can be divided into three categories: light components, heavy components, perishable components. The light component mainly comprises: plastics, bamboo, textiles, etc.; the heavy components mainly comprise: masonry, glass, ceramic, metal, etc.; the perishable components mainly include: food waste, waste paper, etc.

The operation mode is as follows: feeding the garbage and the circulating liquid into a ball mill together for wet grinding (grinding light components into a block shape, grinding heavy components into a fine sand shape, grinding perishable components into slurry shape), and then feeding the crushed garbage and the circulating liquid into a sand-water separator for water separation: enabling light components, mud and fine sand to overflow into a double-shaft shredder to be shredded to be less than 30 mm, and then entering into a slurry tank; the un-crushed heavy matter is made to sink to the water bottom and is extracted by the inclined screw conveyer and returned to the ball mill for further crushing. In the slurry tank, the material is divided into two parts: the upper part is a scum layer formed by light garbage, and the lower layer is a mixture of bottom mud (formed by mud and fine sand sediment) and scum; the lower layer material is pumped to a cyclone desander by a slag slurry pump at the bottom of the tank, the un-crushed weight is separated and sent back to the ball mill for continuous crushing, and the rest materials enter a spiral extrusion dehydrator for extrusion dehydration to form filter residue (which can be used for incineration power generation, carbonization, plastic particle preparation and the like) with the water content of less than 60 percent and filtrate; the filtrate enters a precipitation tank and is divided into dilute filtrate at the upper part, scum and concentrated filtrate at the lower part, a valve on an outlet pipe of the concentrated filtrate is adjusted to ensure that the dilute filtrate and the scum flow out from respective overflow ports, a partition plate is arranged in the precipitation tank to prevent the scum from flowing out from the overflow port of the dilute filtrate, and the concentrated filtrate returns to a ball mill together with the scum after passing through the valve on the outlet pipe; and mixing the dilute filtrate with a flocculating agent, then entering the lower part of a sedimentation tank for sedimentation, pumping formed sludge back to a ball mill through a sludge pump at the bottom, and overflowing supernatant to a sewage treatment device for continuous treatment. And conveying odor and dust generated by garbage treatment into the bottom of the slurry tank through a high-pressure fan to perform aeration treatment on the slurry, and conveying the odor discharged from the surface of the scum layer to an odor treatment device through a draught fan for continuous treatment.

In the description of the present invention, it is to be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "peripheral side", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and simplicity of description, and do not indicate or imply that the system or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a rubbish wet-type ball-milling wet separation processing apparatus which characterized in that includes:

ball mill (1), ball mill (1) is equipped with the feed end that is used for handling rubbish, the feed end of grit-water separator (3) is connected to the discharge end of ball mill (1), the light component of grit-water separator (3), mud and fine sand connect through the overflow mouth and get into biax shredder (4) and tear the light component and break to below 30 millimeters reentrant pulp pond (5), the heavy object of grit-water separator (3) passes through the connection of big inclination band conveyer the feed end of ball mill (1), ball mill (1) next door is equipped with high pressure positive blower (2) that are used for absorbing foul smell and dust, the output of high pressure positive blower (2) lets in through the pipeline slag bath (5) bottom, the bottom of slag bath (5) is equipped with sediment stuff pump (6), the output of sediment stuff pump (6) whirl passes through pipeline intercommunication desander (7), the light component, mud and the fine sand of whirl desander (7) all get into spiral extrusion hydroextractor (8) through the pipeline, spiral extrusion hydroextractor (8) get into precipitation tank (9) through the filtrating that the extrusion produced, dense filtrating after precipitation tank (9) subsides with the heavy object of whirl desander (7) is together through the pipe connection the feed end of ball mill (1), the thick filtrating in precipitation tank (9) passes through overflow pipe connection sedimentation tank (11) behind the dross baffle separation dross, the bottom of sedimentation tank (11) is equipped with sludge pump (12), the output of sludge pump (12) passes through the pipe connection the feed end of ball mill (1).

2. The wet ball-milling water separation treatment device for garbage according to claim 1, wherein an induced draft fan (13) for extracting odor is arranged above the slurry tank (5), and an input end of the induced draft fan (13) is connected with a pipeline communicated with a closed space at the upper part of the slurry tank (5).

3. Wet ball mill treatment plant for refuse according to any of claims 1-2, characterized in that a partition (10) is provided in the settling tank (9) for separating the scum from the dilute filtrate entering the settling tank (11).

4. Wet ball mill for the wet separation of refuse according to any of claims 1-2, characterized in that a flocculating agent is added in the piping between the settling tank (9) and the settling tank (11).

5. A wet ball mill wet separation treatment device for garbage according to any one of claims 1-2, characterized in that a valve is arranged on a pipeline between the bottom of the settling tank (9) and the feeding end of the ball mill (1).

6. A wet ball-milling wet-separation treatment method for garbage, which is characterized in that the wet ball-milling wet-separation treatment device for garbage according to any one of claims 1 to 6 is adopted, and comprises the following steps:

s1: conveying the garbage into a ball mill (1) for ball milling treatment;

s2: performing light-weight separation on the garbage subjected to ball milling treatment by using a sand-water separator (3) to separate light components, slurry and fine sand;

s3: repeating the step S1 on the heavy object separated by the sand-water separator (3), and feeding the separated light component, slurry and fine sand into a double-shaft shredder to shred the light component to below 30 mm and then feeding the light component into a slurry tank (5) for precipitation treatment;

s4: sending the mixture of the scum and the bottom sludge after the precipitation treatment into a cyclone sand remover (7) through a scum pump (6) to separate heavy objects, then sending the mixture into a spiral extrusion dehydrator to perform filter pressing dehydration, separately treating the obtained filter residue, and sending the obtained filtrate into a precipitation tank (9) to perform precipitation and scum separation treatment;

s5: and (3) repeating the step S1 on the concentrated filtrate and the scum after the scum is settled and separated and the heavy objects separated by the cyclone sand separator (7), feeding the dilute filtrate after the scum is settled and separated into a settling tank, and repeating the step S1 on the bottom mud of the settling tank to obtain clarified filtrate for sewage treatment.

7. The wet ball-milling and water-sorting method for garbage according to claim 5, wherein in step S4, a slurry pump (6) is provided at the bottom of the slurry tank (5) for delivering the mixture of scum and sediment to the cyclone sand remover (7), and a partition plate (10) is provided in the settling tank (9).

8. The wet ball-milling wet separation treatment method for garbage according to claim 7, characterized in that in step S5, the bottom of the sedimentation tank (11) is provided with a sludge pump (12) for conveying the bottom sludge to the ball mill (1).