CN110922225A - Urban garbage combined treatment method and system - Google Patents
Urban garbage combined treatment method and system Download PDFInfo
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- CN110922225A CN110922225A CN201911097778.8A CN201911097778A CN110922225A CN 110922225 A CN110922225 A CN 110922225A CN 201911097778 A CN201911097778 A CN 201911097778A CN 110922225 A CN110922225 A CN 110922225A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F9/00—Fertilisers from household or town refuse
- C05F9/04—Biological compost
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F9/00—Fertilisers from household or town refuse
- C05F9/02—Apparatus for the manufacture
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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- Manufacturing & Machinery (AREA)
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- Treatment Of Sludge (AREA)
Abstract
The invention discloses a municipal waste combined treatment system and a municipal waste combined treatment method, which comprise a construction waste crushing treatment device 1, a precipitation separation device 2, a stirring device 3, a fermentation device 4 and a dehydration drying device 5. The invention avoids the cost of the drying and dehydrating device of the construction waste dust slurry and avoids the dust pollution of the dehydrated dust. The cost of purchasing lime as a pH value regulator in organic garbage fermentation is reduced, joint production is realized, the cost is reduced, and waste is changed into valuable.
Description
The technical field is as follows:
the invention relates to a garbage disposal system, in particular to a municipal garbage combined treatment method and a municipal garbage combined treatment system.
Background art:
the construction waste mainly refers to waste generated in the process of demolishing old buildings and constructing buildings in the process of reforming old cities. Wherein more than 80 percent of the construction waste is the construction materials such as waste concrete, waste bricks and tiles, waste decoration materials, dust raising objects and the like. At present, the recycling approach and treatment technology of construction waste can be roughly divided into three levels according to the national experience of better recycling of construction waste:
(1) low-level utilization: the crushed waste concrete is used as a building foundation cushion or a road base, which is the simplest utilization method of the waste concrete and the most common recycling method of the waste concrete in China at present.
(2) Intermediate utilization: the waste concrete is crushed to produce products such as concrete building blocks, paving bricks and the like.
(3) Advanced utilization: the waste concrete is crushed, screened, sorted and cleaned to be used as recycled aggregate, and the recycled aggregate concrete is prepared by replacing part of natural sandstone aggregate. The research shows that the aggregate can be directly added into commercial concrete to replace 10-30% of natural aggregate, which is the most valuable treatment method for waste concrete, and the recycled concrete made of the recycled aggregate is green concrete. In recent years, the sustainable development concept of China is deepened continuously, related industrial technologies are innovated and upgraded continuously, China enters the development stage of solid waste recycling, and the treatment of concrete waste by taking sandstone aggregate as a waste carrier becomes one of the important research subjects at present and achieves breakthrough progress.
But the construction waste needs to be crushed, screened, cleaned and sprayed for dust fall in the recycling of the construction, a large amount of construction waste dust and sewage is generated in the processing process, and the problems of decontamination and discharge also exist. The existing method adopts a precipitation-filtration-drying dehydration method, needs to occupy a large amount of space and equipment investment, does not generate direct economic value, has raised dust pollution and cannot be utilized in the transportation of recovered slurry and dust, and has serious stealing and discharging in reality to cause secondary pollution
The invention content is as follows:
the invention aims to provide a municipal refuse combined treatment method and a municipal refuse combined treatment system, which combine construction refuse dust sewage and an organic refuse fermentation treatment process, wherein the construction refuse dust is alkaline and has a microscopic porous structure by using calcium carbonate, silicon dioxide and calcium silicate. The building garbage dust sewage precipitation slurry is used as a modifier to be crushed and mixed with the organic garbage, the pH value and the agglomeration ventilation property in the organic garbage fermentation process are adjusted, and the fermentation efficiency is improved and improved (the fermentation stop caused by overhigh fermentation acidity is avoided). Meanwhile, humic acid and calcium carbonate in the fermentation product are subjected to fermentation reaction to generate calcium humate and a granular structure taking dust particles as cores, so that the organic fertilizer efficiency can be effectively improved; the calcium silicate component can adsorb and solidify heavy metal components in soil and organic garbage, reduce heavy metal pollution in urban organic garbage and improve soil. Meanwhile, the cost of a drying and dewatering device for the construction waste dust slurry is avoided, and the dust pollution of the dewatered dust is avoided. The cost of purchasing lime as a pH value regulator in organic garbage fermentation is reduced, joint production is realized, the cost is reduced, and waste is changed into valuable.
In order to solve the problems, the technical scheme of the invention is as follows: .
A municipal refuse combined treatment system comprises a construction refuse crushing treatment device 1, a precipitation separation device 2, a stirring device 3, a fermentation device 4 and a dehydration drying device 5; the construction waste crushing treatment device 1 comprises a shell 101, wherein a feeding hole 11 is formed in the top of the shell, and a discharging hole 12 is formed in the bottom of the shell; the active crushing roller 13 and the passive crushing roller 14 penetrate through the shell 101; the active crushing roller 13 and the passive crushing roller 14 are connected through a pair of same transmission gears 15; the active crushing roller 13 and the passive crushing roller 14 are both provided with crushing teeth 16; a spraying device 17 is arranged in the shell 101; a filter screen 18 which is obliquely arranged is arranged below the discharge hole of the shell 101; a precipitation separation device 2 is arranged below the filter screen 18, a weighing conveyor belt 41 is arranged at a precipitation discharge port 21 of the precipitation separation device 2, the conveying end of the weighing conveyor belt 41 is a fermentation feed port 41 of the fermentation device 4, and the stirring device 3 is arranged in the fermentation device 4; the dehydration drying device 5 is arranged below the fermentation discharge port 42 of the fermentation device 4.
In a further improvement, the spraying device 17 is a nozzle, the nozzle is connected with a water inlet pipe 19, the water inlet pipe 19 is communicated with a water tank 110, the water tank 110 is communicated with a tap water pipe 111, and the water inlet pipe 19 is provided with a water pump 112.
In a further improvement, the dehydration drying device 5 comprises a separation drum 21, the separation drum 21 comprises a plane bearing part 22, the periphery of the plane bearing part 22 is connected with an inclined spin-drying separation part 23 which is arranged in an upward inclined manner, and a plurality of filter holes are formed in the inclined spin-drying separation part 23; the top of the inclined spin-drying separation part 23 is connected with a vertical extrusion ring part 24; the vertical thickness of the vertical extrusion ring part 24 is 0.5-2 cm; a water receiving shell 25 is surrounded outside the inclined spin-drying separation part 23, and the water receiving shell 25 is communicated with the water tank 110 through a water outlet pipe 26; a baffle ring 27 is arranged above the vertical extrusion ring part 24, the baffle ring 27 is connected with a precipitation shell 28, and a precipitation discharge hole 21 is formed at the bottom of the precipitation shell 28; the centrifugal motor 210 is connected to the plane bearing portion 22.
In a further improvement, the precipitation separation device 2 and the dehydration drying device 5 have the same structure.
In a further improvement, the fermentation device 4 comprises a fermentation tank 43, the top of the fermentation tank 43 is provided with a fermentation inlet 41, and the bottom of the fermentation tank 43 is provided with a fermentation outlet 42; the stirring device 3 comprises a stirring shaft 44 positioned in the fermentation tank 43, and the stirring shaft 44 is provided with a stirring blade 45 and is connected with a stirring motor 46.
In a further improvement, the precipitation separation device 2 is a thickener.
A municipal refuse combined treatment method comprises the following steps:
firstly, putting the construction waste into a construction waste crushing treatment device 1 for crushing, and spraying water by a spraying device 17 to generate sewage containing dust;
secondly, adding the sewage containing the dust into a precipitation separation device 2 to obtain a precipitate and clear water;
step three, uniformly stirring the urban organic garbage precipitated and detected with the foreign matters by a stirring device 3 to obtain a mixture;
step four, fermenting the mixture in a fermentation device 4 to obtain a fermentation product;
and step five, dehydrating the fermentation product by a dehydration drying device 5 to prepare the organic fertilizer.
The further improvement is that the precipitation separation device 2 is a thickener, and a flocculating agent is added during precipitation; the flocculant is polyacrylamide.
In a further improvement, in the third step, the mixture is adjusted to have a pH value of more than or equal to 8.8 and less than or equal to 11.
Description of the drawings:
FIG. 1 is a schematic structural diagram of a municipal waste joint treatment method and system;
FIG. 2 is a schematic top view of the connecting structure of the active crushing roller and the passive crushing roller.
The specific implementation mode is as follows:
in order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.
Example 1
A municipal waste combined treatment system as shown in fig. 1 and 2, a construction waste crushing treatment device 1, a precipitation separation device 2, a stirring device 3, a fermentation device 4 and a dehydration drying device 5; the construction waste crushing treatment device 1 comprises a shell 101, wherein a feeding hole 11 is formed in the top of the shell, and a discharging hole 12 is formed in the bottom of the shell; the active crushing roller 13 and the passive crushing roller 14 penetrate through the shell 101; the active crushing roller 13 and the passive crushing roller 14 are connected through a pair of same transmission gears 15; the active crushing roller 13 and the passive crushing roller 14 are both provided with crushing teeth 16, and the active crushing roller 13 is connected with a crushing motor 102; a spraying device 17 is arranged in the shell 101; a filter screen 18 which is obliquely arranged is arranged below the discharge hole of the shell 101; a precipitation separation device 2 is arranged below the filter screen 18, a weighing conveyor belt 41 is arranged at a precipitation discharge port 21 of the precipitation separation device 2, the conveying end of the weighing conveyor belt 41 is a fermentation feed port 41 of the fermentation device 4, and the stirring device 3 is arranged in the fermentation device 4; the dehydration drying device 5 is arranged below the fermentation discharge port 42 of the fermentation device 4.
The spraying device 17 is a nozzle, the nozzle is connected with a water inlet pipe 19, the water inlet pipe 19 is communicated with a water tank 110, the water tank 110 is communicated with a tap water pipe 111, and a water pump 112 is arranged on the water inlet pipe 19.
The dehydration drying device 5 comprises a separation rotary drum 21, the separation rotary drum 21 comprises a plane bearing part 22, the periphery of the plane bearing part 22 is connected with an inclined spin-drying separation part 23 which is arranged in an upward inclined mode, and a plurality of filter holes are formed in the inclined spin-drying separation part 23; the top of the inclined spin-drying separation part 23 is connected with a vertical extrusion ring part 24; the vertical thickness of the vertical extrusion ring part 24 is 0.5-2 cm; a water receiving shell 25 is surrounded outside the inclined spin-drying separation part 23, and the water receiving shell 25 is communicated with the water tank 110 through a water outlet pipe 26; a baffle ring 27 is arranged above the vertical extrusion ring part 24, the baffle ring 27 is connected with a precipitation shell 28, and a precipitation discharge hole 21 is formed at the bottom of the precipitation shell 28; the centrifugal motor 210 is connected to the plane bearing portion 22.
The fermentation device 4 comprises a fermentation tank 43, the top of the fermentation tank 43 is provided with a fermentation feed inlet 41, and the bottom of the fermentation tank 43 is provided with a fermentation discharge outlet 42; the stirring device 3 comprises a stirring shaft 44 positioned in the fermentation tank 43, and the stirring shaft 44 is provided with a stirring blade 45 and is connected with a stirring motor 46.
A municipal refuse combined treatment method comprises the following steps:
firstly, putting the construction waste into a construction waste crushing treatment device 1 for crushing, and spraying water by a spraying device 17 to generate sewage containing dust;
secondly, adding the sewage containing the dust into a precipitation separation device 2 to obtain a precipitate and clear water;
step three, uniformly stirring the urban organic garbage precipitated and detected with the foreign matters by a stirring device 3 to obtain a mixture;
step four, fermenting the mixture in a fermentation device 4 to obtain a fermentation product;
and step five, dehydrating the fermentation product by a dehydration drying device 5 to prepare the organic fertilizer.
The precipitation separation device 2 is a thickener, and a flocculating agent is added during precipitation; the flocculant is polyacrylamide.
In the third step, the pH value of the mixture is adjusted to be more than or equal to 8.8 and less than or equal to 11.
The above-mentioned embodiment is only a specific embodiment of the present invention, and is not meant to be a limitation of the present invention, and any simple modification and replacement thereof are within the scope of the present invention.
Claims (9)
1. A municipal refuse combined treatment system is characterized by comprising a construction refuse crushing treatment device (1), a precipitation separation device (2), a stirring device (3), a fermentation device (4) and a dehydration drying device (5); the construction waste crushing treatment device (1) comprises a shell (101), wherein a feeding hole (11) is formed in the top of the shell, and a discharging hole (12) is formed in the bottom of the shell; an active crushing roller (13) and a passive crushing roller (14) penetrate through the shell (101); the active crushing roller (13) and the passive crushing roller (14) are connected through a pair of same transmission gears (15); the active crushing roller (13) and the passive crushing roller (14) are both provided with crushing teeth (16); a spraying device (17) is arranged in the shell (101); a filter screen (18) which is obliquely arranged is arranged below the discharge hole of the shell (101); a precipitation separation device (2) is arranged below the filter screen (18), a weighing conveyor belt (41) is arranged at a precipitation discharge port (21) of the precipitation separation device (2), the conveying end of the weighing conveyor belt (41) is a fermentation feed port (41) of the fermentation device (4), and the stirring device (3) is arranged in the fermentation device (4); the dehydration drying device (5) is arranged below a fermentation discharge hole (42) of the fermentation device (4).
2. The municipal waste joint treatment system according to claim 1, wherein the spraying device (17) is a spray head connected with a water inlet pipe (19), the water inlet pipe (19) is communicated with a water tank (110), the water tank (110) is communicated with a tap water pipe (111), and the water inlet pipe (19) is provided with a water pump (112).
3. The municipal waste joint treatment system according to claim 2, wherein the dewatering and drying device (5) comprises a separator drum (21), the separator drum (21) comprises a planar bearing part (22), an inclined spin-drying separation part (23) which is arranged in an upward inclined manner is connected to the periphery of the planar bearing part (22), and a plurality of filter holes are formed in the inclined spin-drying separation part (23); the top of the inclined spin-drying separation part (23) is connected with a vertical extrusion ring part (24); the vertical thickness of the vertical extrusion ring part (24) is 0.5-2 cm; a water receiving shell (25) is surrounded outside the inclined spin-drying separation part (23), and the water receiving shell (25) is communicated with a water tank (110) through a water outlet pipe (26); a baffle ring (27) is arranged above the vertical extrusion ring part (24), the baffle ring (27) is connected with a precipitation shell (28), and a precipitation discharge hole (21) is formed at the bottom of the precipitation shell (28); the plane bearing part (22) is connected with a centrifugal motor (210).
4. A system for the treatment of organic domestic waste according to claim 3 wherein the precipitation separation means (2) is of the same construction as the dewatering and drying means (5).
5. The organic domestic waste treatment system according to claim 1, wherein the fermentation device (4) comprises a fermentation tank (43), the fermentation tank (43) is provided with a fermentation inlet (41) at the top and a fermentation outlet (42) at the bottom; the stirring device (3) comprises a stirring shaft (44) in the fermentation tank (43), and stirring blades (45) are arranged on the stirring shaft (44) and connected with a stirring motor (46).
6. An organic domestic waste treatment system according to claim 1, wherein the precipitation separation device (2) is a thickener.
7. A municipal refuse combined treatment method is characterized by comprising the following steps:
firstly, putting the construction waste into a construction waste crushing treatment device (1) for crushing, and spraying water by a spraying device (17) to generate sewage containing dust;
secondly, adding the sewage containing the dust into a precipitation separation device (2) to obtain precipitate and clear water;
step three, uniformly stirring the urban organic garbage precipitated and detected with the foreign matters by a stirring device (3) to obtain a mixture;
fermenting the mixture in a fermentation device (4) to obtain a fermentation product;
and step five, dehydrating the fermentation product by a dehydration drying device (5) to prepare the organic fertilizer.
8. A municipal waste treatment method according to claim 7, wherein said precipitation separation means (2) is a thickener and a flocculant is added during precipitation; the flocculant is polyacrylamide.
9. The municipal waste joint treatment method according to claim 7, wherein in the third step, the mixture is adjusted to a pH of 8.8 or more and 11 or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911097778.8A CN110922225A (en) | 2019-11-12 | 2019-11-12 | Urban garbage combined treatment method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911097778.8A CN110922225A (en) | 2019-11-12 | 2019-11-12 | Urban garbage combined treatment method and system |
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| Publication Number | Publication Date |
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| CN110922225A true CN110922225A (en) | 2020-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911097778.8A Pending CN110922225A (en) | 2019-11-12 | 2019-11-12 | Urban garbage combined treatment method and system |
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| CN (1) | CN110922225A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117946842A (en) * | 2024-03-27 | 2024-04-30 | 南京沿江资源生态科学研究院有限公司 | Organic waste continuous high-temperature fermentation cogeneration system |
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| CN102643147A (en) * | 2012-05-08 | 2012-08-22 | 青岛绿帆再生建材有限公司 | Regenerative organic planting soil and preparation method thereof |
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| CN110215989A (en) * | 2019-05-30 | 2019-09-10 | 陈莹 | A kind of environment-friendly multi-stage construction waste crushing processing unit |
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2019
- 2019-11-12 CN CN201911097778.8A patent/CN110922225A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102643147A (en) * | 2012-05-08 | 2012-08-22 | 青岛绿帆再生建材有限公司 | Regenerative organic planting soil and preparation method thereof |
| CN104588167A (en) * | 2015-01-30 | 2015-05-06 | 湖南有色环保建材有限公司 | Crusher |
| CN207641987U (en) * | 2017-10-10 | 2018-07-24 | 默克环保科技（湖南）有限公司 | A kind of mixing wastewater with air auto spraying deodorization device |
| CN208520170U (en) * | 2018-02-07 | 2019-02-19 | 长沙江南水务建设有限公司 | A kind of house refuse separation drying and processing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117946842A (en) * | 2024-03-27 | 2024-04-30 | 南京沿江资源生态科学研究院有限公司 | Organic waste continuous high-temperature fermentation cogeneration system |
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