CN109879467B - Sludge concentration and separation device for mine water treatment - Google Patents
Sludge concentration and separation device for mine water treatment Download PDFInfo
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- CN109879467B CN109879467B CN201910278003.4A CN201910278003A CN109879467B CN 109879467 B CN109879467 B CN 109879467B CN 201910278003 A CN201910278003 A CN 201910278003A CN 109879467 B CN109879467 B CN 109879467B
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- separator
- reaction diffusion
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention relates to a sludge treatment method, in particular to a sludge concentration and separation device for mine water treatment, which comprises a shell, a separator, a cavitation air dissolving device and a slag scraping machine, wherein the side surface of the shell is provided with a material inlet, a clear liquid discharge port, a scum discharge port and a sediment discharge port; the separator is provided with a conical bottom and is arranged in the shell, the conical bottom is connected with the sediment discharge port, a reaction diffusion cylinder with two horn-shaped openings is arranged at the center in the separator, the cavitation gas dissolving device is arranged in the reaction diffusion cylinder, and the material inlet extends into the bottom of the reaction diffusion cylinder through a pipeline. The invention realizes the concentration of heavy sludge and light sludge and the separation of clear liquid by one-step treatment by utilizing the air flotation principle, can effectively solve the difficult problem of the concentration treatment of the coal-containing sludge and improve the treatment effect of the coal mine sewage.
Description
The application is a divisional application of an invention patent with the application number of 201610406098X, the application date of 2016-06-12 and the name of 'a method and a device for concentrating and separating coal-containing sludge'.
Technical Field
The invention relates to a sludge treatment method, in particular to a sludge concentration and separation device for mine water treatment, and belongs to the field of environmental protection.
Background
Coal is a main primary energy source in China and cannot be changed for a long time. With the stricter and stricter environmental protection, the treatment of sewage and wastewater in coal mine enterprises is paid unprecedented attention. Particularly, the water treatment technology of domestic sewage in coal mine areas is relatively mature and complete; however, coal-containing sludge generated by water treatment is always a difficult point and final pollution source for domestic sewage treatment in mining areas.
The production organization characteristics of the mining area enable a large amount of coal dust and coal slag to enter a sewage sewer, precipitate in a primary sedimentation tank, a reaction tank and the like of a domestic sewage treatment system, and finally discharge to a sludge concentration tank. Due to the fact that the physical properties of the coal dust and the coal slag are greatly different from those of domestic sludge, sedimentation speed is high, fluidity is poor, hardening is easy to occur, most of sludge in a sludge concentration tank is poor in effect, sludge is hardened, conveying pipelines are blocked, and the like, and the treatment effect of a sewage treatment system is reduced.
Disclosure of Invention
The invention provides a sludge concentration and separation device for mine water treatment, which realizes concentration of heavy sludge and light sludge and separation of clear liquid by one-step treatment according to the air flotation principle, can effectively solve the problem of concentration treatment of coal-containing sludge, and improves the coal mine sewage treatment effect.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a sludge concentration and separation device for mine water treatment comprises a shell, a separator, a cavitation air dissolving device and a slag scraping machine, wherein a material inlet, a clear liquid discharge port, a scum discharge port and a sediment discharge port are formed in the side surface of the shell; the separator is provided with a conical bottom and is arranged in the shell, the conical bottom is connected with the sediment discharge port, a reaction diffusion cylinder with two horn-shaped openings is arranged at the center in the separator, the cavitation gas dissolving device is arranged in the reaction diffusion cylinder, and the material inlet extends into the bottom of the reaction diffusion cylinder through a pipeline. The separator is used for realizing the circulating concentration separation of the sludge, wherein the cavitation air dissolving device is used for dissolving air into the sludge; floating light sludge containing micro bubbles and primarily precipitating heavy sludge in the reaction diffusion cylinder; the settling and clarifying section realizes the further separation of clear liquid and sludge, and the sediment compression section further concentrates heavy sludge; separating clear liquid by using a water outlet weir; scum is discharged by the scum scraper and the scum baffle.
Preferably, the reaction diffusion cylinder divides the interior of the separator into three areas, namely a reaction diffusion section, a sedimentation clarification section and a sediment compression section, the reaction diffusion section is arranged in the reaction diffusion cylinder, the sedimentation clarification section is arranged in the area outside the cylinder wall of the reaction diffusion cylinder, and the sediment compression section is arranged in the area below the reaction diffusion cylinder.
Preferably, the scum scraper is arranged at the top of the separator, and scum is discharged by the rotation of the scraper.
Preferably, the reaction diffusion cylinder is vertically arranged in the separator, the bottom of the reaction diffusion cylinder is provided with a small bell mouth, the top of the reaction diffusion cylinder is provided with a large bell mouth, and the height ratio of the small bell mouth to the large bell mouth is 1: 3-4.
Preferably, the bevel angle of the two bell mouths of the reaction diffusion cylinder is 15-75 degrees, which is set according to the specific gravity and the solid content of the sludge. More preferably, the small flare angle is 43-48 ° and the large flare angle is 58-62 °. The angle of the large bell mouth at the upper part mainly influences the deceleration of water flow, which is related to the specific gravity and solid content of sludge, and the small bell mouth at the lower part mainly plays a role in guiding the recirculation.
Preferably, the shell is rectangular, the separator is positioned in the center of the shell and divides the space in the shell into a left part and a right part, the top of the right side of the separator is provided with a semicircular adjustable water outlet weir, a scum baffle and a rotary slag scraper, a clear liquid baffle is arranged between the lower part of the right side of the separator and the inner wall of the shell and divides the space between the inner part of the shell and the right side of the separator, the space between the adjustable water outlet weir and the clear liquid baffle is a clear liquid collecting area, and the clear liquid outlet is adjacent to and arranged above the clear liquid baffle.
Preferably, an outwardly inclined scum sedimentation plate is provided between a lower portion of the left bottom of the separator and the inner wall of the casing, the scum sedimentation plate partitions a space between the inside of the casing and the left side of the separator, and the scum discharge port is provided above and adjacent to the scum sedimentation plate.
A coal-containing sludge concentration and separation method adopting the device comprises the following steps:
sending the conditioned coal-containing sludge into a separator, dissolving micro air bubbles in the coal-containing sludge through a cavitation air dissolving device, circularly concentrating and separating light sludge and heavy sludge in the sludge, and discharging water in a clear liquid form;
floating the light sludge to the upper part of the separator, and scraping the light sludge by a slag scraper;
settling heavy sludge to the lower part of the separator, compressing and discharging the sludge through a sludge discharge port;
the circulating concentration and separation process comprises reaction diffusion, sedimentation clarification and sediment compression; and (3) dissolving gas again, floating and separating the lighter part of the heavy sludge subjected to primary precipitation through a reaction diffusion cylinder, and circulating and reciprocating until the light sludge is completely floated and the heavy sludge is settled and compressed. The whole process is completed in the separator through gravity and buoyancy without additional power. The method utilizes the cavitation air flotation principle to concentrate and separate the coal-containing sludge. The circulation concentration separation is realized by a reaction diffusion cylinder specially designed in the separator, and different reaction diffusion cylinder diameters, cone angles and heights are designed according to the specific gravity, concentration and the like of the sludge, so that the natural rising, circulation gas dissolving and separation processes in the sludge gas dissolving process are realized.
The invention has the beneficial effects that: according to the coal-containing sludge concentration separation method and the coal-containing sludge concentration separation device, the processes of circulating dissolved air, floating and concentration separation in the separator can be used for effectively separating heavy sludge, light sludge and clear liquid in coal-containing sludge generated in the coal mine water and domestic sewage treatment process; the defect that the traditional air dissolving mode is complex in structure and easy to block is overcome by adopting the cavitation air dissolving; meanwhile, the separator adopts internal circulation, so that additional power is not needed, and the separator has the characteristics of simple equipment, low energy consumption, convenience in maintenance and the like.
Drawings
FIG. 1 is a schematic process flow diagram of the present invention;
FIG. 2 is a schematic structural diagram of the sludge concentration and separation device for mine water treatment according to the invention;
FIG. 3 is a top view of the sludge concentrating and separating device for mine water treatment according to the present invention;
description of reference numerals: the device comprises a shell 1, a separator 2, a cavitation gas dissolving device 3, a slag scraping machine 4, a material inlet 5, a clear liquid outlet 6, a scum outlet 7, a sediment outlet 8, a reaction diffusion cylinder 9, a reaction diffusion section 10, a sedimentation clarification section 11, a sediment compression section 12, a scum baffle 13, a water outlet weir 14, a clear liquid baffle 15, a scum sedimentation plate 16 and a clear liquid collecting region 17.
Detailed Description
The technical solution of the present invention is further specifically described below by way of specific examples in conjunction with the accompanying drawings. It is to be understood that the practice of the invention is not limited to the following examples, and that any variations and/or modifications may be made thereto without departing from the scope of the invention.
Example (b):
as shown in fig. 2 and fig. 3, the sludge concentration and separation device for mine water treatment comprises a shell 1, a separator 2, a cavitation air dissolving device 3 and a slag scraper 4, wherein the side surface of the shell 1 is provided with a material inlet 5, a clear liquid discharge port 6, a scum discharge port 7 and a sediment discharge port 8; the separator is provided with a conical bottom and is arranged in the shell, the conical bottom is connected with the sediment discharge port, a reaction diffusion cylinder 9 with horn-shaped openings at two ends is arranged at the center in the separator, the cavitation gas dissolving device is arranged in the reaction diffusion cylinder, the material inlet extends into the bottom of the reaction diffusion cylinder through a pipeline, the reaction diffusion cylinder separates the interior of the separator into three areas, namely a reaction diffusion section 10, a sedimentation clarification section 11 and a sediment compression section 12, the reaction diffusion cylinder is internally provided with the reaction diffusion section, the area outside the cylinder wall of the reaction diffusion cylinder is the sedimentation clarification section, and the area below the reaction diffusion cylinder is the sediment compression section; the scum scraper is arranged at the top of the separator and discharges scum through the rotation of the scraper. The slag scraper 4 is of a rotary type.
The shell is rectangular, the separator is positioned in the center of the shell and divides the space in the shell into a left part and a right part, the top of the right side of the separator is provided with a semicircular adjustable water outlet weir 14 and a scum baffle 13, a clear liquid baffle 15 is arranged between the lower part of the right side of the separator and the inner wall of the shell, the clear liquid baffle separates the space between the inner part of the shell and the right side of the separator, the space between the adjustable water outlet weir and the clear liquid baffle is a clear liquid collecting area 17, and the clear liquid outlet 6 is adjacent to and arranged above the clear liquid baffle. An outward-inclined scum sedimentation plate 16 is arranged between the lower part of the bottom of the left side of the separator and the inner wall of the shell, the scum sedimentation plate separates the space between the inside of the shell and the left side of the separator, and a scum outlet 7 is adjacent to and arranged above the scum sedimentation plate.
The reaction diffusion cylinder is vertically arranged in the separator, the bottom of the reaction diffusion cylinder is a small horn mouth, the top of the reaction diffusion cylinder is a large horn mouth, and the height ratio of the small horn mouth to the large horn mouth is 1: 3. In this embodiment, the bevel angle of the small flare opening is 45 degrees, and the bevel angle of the large flare opening is 60 degrees.
As shown in figure 1, the coal-containing sludge enters a sludge concentration and separation device for mine water treatment after physical or chemical conditioning, and is subjected to cavitation air dissolving, light sludge air flotation concentration and separation; settling and clarifying heavy sludge, and compressing and separating; and (5) refluxing clear liquid. The processed material is in the middle separator, the separated clear liquid is at the part above the clear liquid baffle 15, the scum is at the part above the scum settling plate 16, and the sediment is in the cone bottom of the separator.
A method for concentrating and separating coal-containing sludge by adopting the device comprises the following steps:
the coal-containing sludge is sent to the center of the separator through a material inlet after being conditioned, enters the bottom of the cavitation gas dissolving device, is dissolved with tiny air bubbles through the cavitation gas dissolving device, and quickly floats upwards under the action of buoyancy and the stirring of a cavitation gas dissolving impeller under the action of bubbles and water flow, and is decelerated at a large bell mouth positioned at the upper part of a reaction diffusion section to be separated from clear liquid, and finally the floated light sludge is scraped by a slag scraper and pushed to a scum discharge port to be discharged; one part of the heavy sludge is separated from the mixed system after being dissolved with gas, quickly sinks and enters a sediment compression section; the primarily separated clear liquid is directly settled and clarified in the settling and clarifying section, and the clarified part enters a clear liquid collecting region 17 through an adjustable water outlet weir and is discharged from a clear liquid discharging port 6; sludge particles contained in the sludge are gradually sunk in a sedimentation clarification section to realize further separation due to the slow water flow, and are further compressed and dehydrated together with directly sunk heavy sludge and discharged from a sediment discharge port 8; the sludge-containing part enters a sediment compression section, wherein the lighter sludge on the upper layer of the sediment compression section 12 is carried into the reaction diffusion cylinder again by circulating water flow to carry out dissolved air floating, and then the light sludge is separated again; the above steps are repeated in a circulating way until the light sludge completely floats and the heavy sludge is settled and compressed; the whole process only needs to dissolve gas once in the separator, and then the gas is dissolved through gravity and buoyancy, and other power is not needed. The method realizes the circular concentration and separation of the sludge containing coal, and can effectively separate heavy sludge mainly comprising coal cinder from light sludge mainly comprising domestic sludge.
Specifically, the coal-containing sludge fed from the material inlet 5 can be subjected to physical conditioning or chemical conditioning; the light sludge discharged from the scum outlet 7 can be directly pumped to a sludge dewatering machine for dewatering and final disposal; the heavy sludge discharged from the sediment discharge port 8 can be conveyed and discharged by a slurry pump or a screw conveyor according to the flowing condition; the water discharged from the clear liquid discharge port 6 can be sent back to the sewage treatment system for secondary treatment, and the water is discharged or recycled after reaching the standard.
By applying the embodiment, after the coal-containing sludge with the water content of more than 98% is concentrated and separated, the water content of scum is less than or equal to 93%, the water content of sediments is less than or equal to 90%, and the surface load of sludge treatment is more than or equal to 1000 kg/(m)2D) hydraulic load ≥ 8 m3/(m2H), the energy consumption is saved by more than 30 percent compared with the traditional method, and the treatment effect is good.
Compared with the traditional method, the method greatly simplifies the concentration treatment process of the coal-containing sludge; the air compressor, the dissolved air tank, the reflux pump, the micro-bubble generator, the matched external circulation pipeline and the like which are necessary for the conventional sludge air flotation concentration are omitted, the equipment cost and the energy consumption are greatly saved, and the stability of a sludge concentration system is improved.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. A sludge concentration separator for pit water treatment which characterized in that: the device comprises a shell (1), a separator (2), a cavitation air dissolving device (3) and a slag scraping machine (4), wherein a material inlet (5), a clear liquid discharge port (6), a scum discharge port (7) and a sediment discharge port (8) are arranged on the side surface of the shell (1); the outer shell is rectangular, the separator is provided with a conical bottom and is arranged in the outer shell, the conical bottom is connected with the sediment discharge port, a reaction diffusion cylinder (9) with two horn-shaped openings is arranged at the center in the separator, the cavitation gas dissolving device is arranged in the reaction diffusion cylinder, and the material inlet extends into the bottom of the reaction diffusion cylinder through a pipeline; the separator is positioned at the center of the separator and divides the space in the shell into a left part and a right part, and the upper part of the right side of the separator is provided with a semicircular adjustable effluent weir (14) and a scum baffle (13);
the reaction diffusion cylinder divides the interior of the separator into three areas, namely a reaction diffusion section (10), a sedimentation clarification section (11) and a sediment compression section (12), wherein the reaction diffusion section is arranged in the reaction diffusion cylinder, the sedimentation clarification section is arranged in the area outside the cylinder wall of the reaction diffusion cylinder, and the sediment compression section is arranged in the area below the reaction diffusion cylinder;
the reaction diffusion cylinder is vertically arranged in the separator, the bottom of the reaction diffusion cylinder is a small bell mouth, the top of the reaction diffusion cylinder is a large bell mouth, the height ratio of the small bell mouth to the large bell mouth is 1:3-4, and the oblique angle of the two bell mouths of the reaction diffusion cylinder is 15-75 degrees.
2. The sludge concentration and separation device for mine water treatment according to claim 1, characterized in that: the scum scraper is arranged at the top of the separator and discharges scum through the rotation of the scraper.
3. The sludge concentration and separation device for mine water treatment according to claim 1, characterized in that: the bevel angle of the small bell mouth is 43-48 degrees, and the bevel angle of the large bell mouth is 58-62 degrees.
4. The sludge concentration and separation device for mine water treatment according to claim 1, characterized in that: a clear liquid baffle (15) is arranged between the lower part of the right side of the separator and the inner wall of the shell, the clear liquid baffle separates the space between the inner side of the shell and the right side of the separator, the space between the adjustable water outlet weir and the clear liquid baffle is a clear liquid collecting region (17), and a clear liquid outlet (6) is adjacent to and arranged above the clear liquid baffle.
5. The sludge concentration and separation device for mine water treatment according to claim 1, characterized in that: an outwards inclined scum sedimentation plate (16) is arranged between the lower part of the bottom of the left side of the separator and the inner wall of the shell, the scum sedimentation plate separates the space between the inside of the shell and the left side of the separator, and a scum outlet (7) is adjacent to and arranged above the scum sedimentation plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910278003.4A CN109879467B (en) | 2016-06-12 | 2016-06-12 | Sludge concentration and separation device for mine water treatment |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610406098.XA CN106044913B (en) | 2016-06-12 | 2016-06-12 | One kind separation method of sludge condensation containing coal and device |
| CN201910278003.4A CN109879467B (en) | 2016-06-12 | 2016-06-12 | Sludge concentration and separation device for mine water treatment |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610406098.XA Division CN106044913B (en) | 2016-06-12 | 2016-06-12 | One kind separation method of sludge condensation containing coal and device |
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| Publication Number | Publication Date |
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| CN109879467A CN109879467A (en) | 2019-06-14 |
| CN109879467B true CN109879467B (en) | 2021-12-24 |
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| CN201610406098.XA Active CN106044913B (en) | 2016-06-12 | 2016-06-12 | One kind separation method of sludge condensation containing coal and device |
| CN201910278003.4A Active CN109879467B (en) | 2016-06-12 | 2016-06-12 | Sludge concentration and separation device for mine water treatment |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610406098.XA Active CN106044913B (en) | 2016-06-12 | 2016-06-12 | One kind separation method of sludge condensation containing coal and device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107399795A (en) * | 2017-08-30 | 2017-11-28 | 中国恩菲工程技术有限公司 | Mine down-hole continuous drainage sludge drainage system |
| CN108178492B (en) * | 2018-01-15 | 2020-11-06 | 煤科集团杭州环保研究院有限公司 | Municipal domestic sludge air flotation concentration treatment equipment and method |
| CN110759427A (en) * | 2019-11-29 | 2020-02-07 | 中明科学仪器设备(苏州)股份有限公司 | Multiphase separator for sewage treatment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101759243A (en) * | 2010-01-15 | 2010-06-30 | 江苏清溢环保设备有限公司 | Vertical-type air-flotation device |
| CN203128252U (en) * | 2013-03-20 | 2013-08-14 | 福建科航环保科技有限公司 | Oil-water separator with cavitation aerator |
| CN103803774A (en) * | 2014-02-26 | 2014-05-21 | 江苏理工学院 | Sludge thickening device and sludge treatment method thereof |
| CN203820565U (en) * | 2014-01-21 | 2014-09-10 | 碧海舟（北京）石油化工设备有限公司 | Oily sewage air floatation suspension layer filtering device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002035780A (en) * | 2000-07-24 | 2002-02-05 | Hitachi Plant Eng & Constr Co Ltd | Method for improving sludge sedimentation, apparatus therefor, and sludge treatment apparatus |
| CN204079743U (en) * | 2014-08-11 | 2015-01-07 | 煤科集团杭州环保研究院有限公司 | A kind of Technique of Coal Mine Drainage sludge treatment equipment |
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2016
- 2016-06-12 CN CN201610406098.XA patent/CN106044913B/en active Active
- 2016-06-12 CN CN201910278003.4A patent/CN109879467B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101759243A (en) * | 2010-01-15 | 2010-06-30 | 江苏清溢环保设备有限公司 | Vertical-type air-flotation device |
| CN203128252U (en) * | 2013-03-20 | 2013-08-14 | 福建科航环保科技有限公司 | Oil-water separator with cavitation aerator |
| CN203820565U (en) * | 2014-01-21 | 2014-09-10 | 碧海舟（北京）石油化工设备有限公司 | Oily sewage air floatation suspension layer filtering device |
| CN103803774A (en) * | 2014-02-26 | 2014-05-21 | 江苏理工学院 | Sludge thickening device and sludge treatment method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109879467A (en) | 2019-06-14 |
| CN106044913B (en) | 2019-05-14 |
| CN106044913A (en) | 2016-10-26 |
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