CN114149133A - Process system for grading treatment of source water of underground coal mine - Google Patents
Process system for grading treatment of source water of underground coal mine Download PDFInfo
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- CN114149133A CN114149133A CN202111344384.5A CN202111344384A CN114149133A CN 114149133 A CN114149133 A CN 114149133A CN 202111344384 A CN202111344384 A CN 202111344384A CN 114149133 A CN114149133 A CN 114149133A
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- water
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- magnetic separation
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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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
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/488—Treatment of water, waste water, or sewage with magnetic or electric fields for separation of magnetic materials, e.g. magnetic flocculation
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
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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
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to the field of mine water treatment, in particular to a process system for grading treatment of source water of an underground coal mine, which comprises a large-particle impurity treatment part, a fine-particle impurity and suspended colloid treatment part and a coal slime treatment part, wherein the large-particle impurity treatment part is used for removing large-particle impurities with the particle size of more than 0.1mm in mine water; the fine particle impurity and suspended matter colloid treatment part is used for efficiently removing impurities which are difficult to precipitate and have particle sizes larger than 5um, such as fine particle impurities, colloidal suspended matters and the like in a water body; the coal slurry treatment part is used for further concentrating and then dehydrating coal slurry pollutants generated in the water treatment process. The system can realize the process treatment method for treating the source water of the underground coal mine with different requirements, the water produced by the system can be put into a bin by clear water, and the system can also be used for fire fighting, spraying, dust settling, equipment cooling and the like of a coal mining surface, so that the high-efficiency utilization of mine water resource is realized.
Description
The technical field is as follows:
the invention relates to the field of mine water treatment, in particular to a process system for grading treatment of source water in an underground coal mine.
Background art:
under the guidance and promotion of the national 'mine water utilization special planning', policy and regulations in the aspect of comprehensive utilization of mine water are disputed from main coal-producing provinces in China, so that the comprehensive utilization of the mine water is promoted, the mine water utilization scale is continuously enlarged, the equipment technical level is continuously improved, and the development of the mine water comprehensive utilization scale, systematization and automatic control informatization is gradually carried out. The technology for treating the mine water depends on the properties of the mine water and the application after treatment, the mine water has the characteristics of underground water and surface water and the properties of sewage and wastewater in terms of water quality components, the technology for treating the mine water generally adopts the technology technologies such as coagulation, precipitation, filtration, disinfection, reverse osmosis and the like, and an air floatation treatment technology is also often added for water bodies with higher petroleum content. Conventional mine water treatment water taking is usually from a water sump collected by source water, namely mine water which is primarily precipitated by the water sump, so that a considerable part of coal slime pollutants in source water in a coal mine underground water is accumulated in the water sump and cannot be treated and discharged by water treatment equipment, and the water treatment equipment cannot play a role to the maximum extent. The method solves the problems that pollutants in water in a source water of a coal mine are removed to the maximum extent by means of classified capture, pressure of coal slime deposition in a water sump is relieved, and mine water resources are recycled.
The invention content is as follows:
the invention aims to provide a process system for grading treatment of source water in a coal mine.
The purpose of the invention is realized by the following technical scheme:
a process system for grading treatment of source water in a coal mine well comprises a large-particle impurity treatment part, a fine-particle impurity and suspended matter colloid treatment part and a coal slime treatment part;
the large particle impurity treatment part comprises a coarse grating, a rotary drum fine grating, a water inlet buffer tank, a lift pump, a high-efficiency cyclone, a vibrating screen and a pre-settling regulating tank and is used for removing large particle impurities with the particle size larger than 0.1mm in mine water;
the fine particle impurity and suspended matter colloid treatment part comprises a magnetic separation mixing tank 1, a magnetic separation mixing tank 2, a magnetic separation flocculation tank 3, magnetic powder recovery equipment, a magnetic separation sedimentation tank, a buffer tank, high-efficiency filtering equipment, a water production tank and dosing equipment, and is used for efficiently removing impurities which are difficult to precipitate and have particle sizes larger than 5 mu m, such as fine particle impurities, colloidal suspended matters and the like in a water body;
the coal slime treatment part comprises a coal slime concentration tank, a sludge inlet pump and coal slime dehydration equipment and is used for further concentrating and then dehydrating coal slime pollutants generated in the water treatment process so as to discharge the coal slime pollutants out of the water treatment system;
the grid gap of the coarse grid can be selected to be 5-10mm in specification;
the gap of the fine grid of the rotary drum can be selected to be 1.5-3mm in specification;
the size of the screen hole gap of the vibrating screen can be 0.1-0.2 mm.
The magnetic separation mixing tank 1 and the magnetic separation mixing tank 2 are provided with stirrers, and the stirring speed is 100-;
the magnetic separation coagulation 3 pool is provided with a stirrer, and the stirring speed is 30-60 r/min;
the medicament provided by the dosing equipment is respectively fed into the mixing tank 1 and the mixing tank 2 according to the functional requirements;
the inclination angle of the inclined plate arranged in the magnetic separation sedimentation tank is 60 degrees;
the magnetic powder recovery equipment comprises a shearing machine and a magnetic drum;
the system also comprises a water inlet buffer pool, wherein the water inlet buffer pool is used for collecting the outlet water of the rotary drum fine grid;
the system also comprises a lifting pump, wherein the lifting pump is used for lifting the mine water in the water inlet buffer pool to the high-efficiency swirler;
the system also comprises a pre-settling regulating tank, wherein the pre-settling regulating tank is used for settling the effluent of the high-efficiency cyclone and the vibrating screen;
the system also comprises a sludge discharge pump, wherein the sludge discharge pump is used for discharging the coal slime precipitated in the pre-settling regulating tank to a coal slime concentration tank;
the system also comprises a buffer pool, wherein the buffer pool is used for collecting the effluent of the magnetic separation sedimentation pool;
the system also comprises high-efficiency filtering equipment, wherein the high-efficiency filtering equipment is used for filtering the mine water collected in the buffer tank;
the system also comprises a booster pump, wherein the booster pump is used for lifting the mine water in the buffer pool to the high-efficiency filter;
the system also comprises a water producing pool, wherein the water producing pool is used for collecting the produced water of the high-efficiency filter;
the system also comprises a coal slime concentration tank, wherein the coal slime concentration tank is used for collecting coal slime in each sedimentation tank in the system;
the system also comprises coal slime dehydration equipment, wherein the coal slime dehydration equipment is used for dehydrating the concentrated coal slime in the coal slime concentration tank;
the system also comprises a sludge inlet pump, wherein the sludge inlet pump is used for discharging the concentrated coal slime in the coal slime concentration tank to sludge dewatering equipment.
The invention has the following beneficial effects: the system can realize the process treatment method for treating the source water of the underground coal mine with different requirements, and the fine particle impurities and suspended matter colloid treatment part in the system can also realize the cyclic utilization of the loading object, thereby reducing the operation cost; clear water can be put into a warehouse by the system to solve the problem of coal slime accumulation caused by direct warehousing of source water carrying a large amount of coal slime impurities underground, the system water can also be used for fire fighting, spraying, dust settling, equipment cooling and the like of a coal mining face, and the high-efficiency utilization of mine water resource is realized.
Description of the drawings:
the accompanying drawings, which are included to provide a further understanding of the invention, illustrate embodiments of the invention and together with the description serve to explain the invention and are not to limit the invention. In the drawings:
FIG. 1 is a schematic flow chart of the present invention
In the figure: i-large particle impurity treatment part, II-fine particle impurity and suspended matter colloid treatment part, III-coal slime treatment part
1. Coarse grating, 2, fine grating of a rotary drum, 3, a water inlet buffer tank, 4, a lifting pump, 5, a high-efficiency swirler, 6, a vibrating screen, 7, a coal slime conveying device, 8, a pre-settling regulating tank, 9, a dredge pump, 10, a magnetic powder recovery device, 11, a magnetic separation mixing 1 tank, 12, a magnetic separation mixing 2 tank, 13, a magnetic separation flocculation 3 tank, 14, a dredge pump, 15, a magnetic separation sedimentation tank, 16, a buffer tank, 17, a pressurizing pump, 18, a high-efficiency filtering device, 19, a water production tank, 20, a coal slime concentration tank, 21, a dredge pump, 22, coal slime dehydration device, 23 and a dosing device
The specific implementation mode is as follows:
the invention is described in detail below with reference to fig. 1:
as shown in figure 1, the process system for grading treatment of coal mine underground source head water comprises a large-particle impurity treatment part I, a fine-particle impurity and suspended matter colloid treatment part II and a coal slurry treatment part III, and is characterized in that a coarse grating 1 is connected with a rotary drum fine grating 2, the rotary drum fine grating 2 is connected with a water inlet buffer tank 3, the water inlet buffer tank 3 is connected with a lifting pump 4, the lifting pump 4 is connected with a high-efficiency swirler 5, the lower part of the high-efficiency swirler 5 is connected with a vibrating screen 6, the upper part of the high-efficiency swirler 5 is connected with a pre-settling adjusting tank 8, the mud outlet end of the vibrating screen 6 is connected with a coal slurry conveying device 7, the water outlet end of the vibrating screen 6 is connected with a pre-settling adjusting tank 8, the lower end of the pre-settling adjusting tank 8 is connected with a mud discharge pump 9, the mud discharge pump 9 is connected with a coal slurry concentration tank 20, the upper part of the pre-settling adjusting tank 8 is connected with a magnetic separation mixing tank 1 11, the mixed 1 pond 11 of magnetic separation is connected with the mixed 2 ponds 12 of magnetic separation, the mixed 2 ponds 12 of magnetic separation are connected with 3 ponds 13 of magnetic separation flocculation basin, and 3 ponds 13 of shown magnetic separation flocculation basin are connected with magnetic separation sedimentation tank 15, dredge pump 14 is connected with magnetic recovery plant 10, magnetic separation recovery plant 10 is connected with coal slime concentrated pond 20, coal slime concentrated pond 20 with advance the dredge pump 21 and be connected, it is connected with coal slime dewatering equipment 22 to advance dredge pump 21, magnetic separation sedimentation tank 15 upper end is connected with buffer pool 16, buffer pool 16 is connected with force (forcing) pump 17, force (forcing) pump 17 is connected with high-efficient filtration equipment 18, high-efficient filtration equipment 18 is connected with product water pond 19.
The process system for the graded treatment of the source head water in the underground coal mine further comprises a dosing device 23, wherein the dosing device 23 is respectively connected with the magnetic separation mixing tank 1 11 and the magnetic separation mixing tank 2 tank 12.
The method comprises the following steps:
coal mine underground source water is intercepted by a coarse grating 1 for impurities with the granularity of more than 5mm and then enters a rotary drum fine grating 2 for intercepting the impurities with the granularity of more than 1.5mm, the mine water is collected in a water inlet buffer tank 3, under the lifting of a lifting pump 4, the mine water is under the rotational flow action of a high-efficiency swirler 5, heavier large-particle impurities are discharged from the lower part and enter a vibrating screen 6 for treatment, the mine water is subjected to vibration concentration, the impurities with the granularity of more than 0.1mm are dehydrated and discharged to coal slime transportation equipment by the vibrating screen, the water discharged from the upper part of the high-efficiency swirler 5 is collected in a vibrating screen 6 and flows into a pre-settling adjusting tank 8 for precipitation and impurity removal, a sludge pump 9 conveys coal slime precipitated in the pre-settling adjusting tank 8 to a coal slime concentrating tank 20 for concentration treatment, the liquid at the upper part of the pre-settling adjusting tank 8 automatically flows into a magnetic separation mixing tank 1, a magnetic separation mixing tank 2, a magnetic separation flocculation tank 3, and the magnetic separation mixing tank 1 and the magnetic separation mixing tank 2 perform medicament addition under the condition that a medicament is added by a medicament adding equipment 23 The mine water is quickly mixed, the magnetic powder heavy media recovered by the magnetic powder recovery device 10 also flows into a magnetic separation mixing tank 1 to be mixed with a medicament, the mine water with the heavy media is effectively reacted in a magnetic separation flocculation tank 3 to form large floccules to be quickly precipitated in a magnetic separation sedimentation tank 15, supernatant flows to a buffer tank 16, the magnetic powder of the precipitated coal slurry with the magnetic powder is recovered under the action of the magnetic powder recovery device 15, the residual coal slurry is discharged into a coal slurry concentration tank 20, water in the buffer tank 16 is pressurized by a pressure pump 17 and is filtered in a high-efficiency filter 18 to remove impurities with the granularity of more than 5 microns, produced water is discharged into a produced water tank, and the concentrated coal slurry in the coal slurry concentration tank 20 is dehydrated in a coal slurry dehydration device 22 after being discharged by a sludge pump 21.
Claims (10)
1. A process system for grading treatment of source head water in a coal mine comprises a large particle impurity treatment part, a fine particle impurity and suspended matter colloid treatment part and a coal slime treatment part, and is characterized in that the large particle impurity treatment part comprises a coarse grating, a rotary drum fine grating, a water inlet buffer tank, a lifting pump, a high-efficiency swirler, a vibrating screen and a pre-settling regulating tank, and is used for removing large particle impurities with the particle size larger than 0.1mm in mine water;
the fine particle impurity and suspended matter colloid treatment part comprises a magnetic separation mixing tank 1, a magnetic separation mixing tank 2, a magnetic separation flocculation tank 3, magnetic powder recovery equipment, a magnetic separation sedimentation tank, a buffer tank, high-efficiency filtering equipment, a water production tank and dosing equipment, and is used for efficiently removing impurities which are difficult to precipitate and have particle sizes larger than 5 mu m, such as fine particle impurities, colloidal suspended matters and the like in a water body;
the coal slime treatment part comprises a coal slime concentration tank, a sludge inlet pump and coal slime dehydration equipment and is used for further concentrating and then dehydrating coal slime pollutants generated in the water treatment process so as to be discharged out of the water treatment system.
2. The apparatus of claim 1, wherein the grid gap of the coarse grid is selectable to 5-10 mm.
3. The apparatus as claimed in claim 1, wherein the gap between the fine grids of the rotary drum can be selected to be 1.5-3 mm.
4. The apparatus as claimed in claim 1, wherein the size of the holes of the vibrating screen is 0.1-0.2 mm.
5. The method as claimed in claim 1, wherein the magnetic separation mixing tank 1 and the magnetic separation mixing tank 2 are equipped with a stirrer, and the stirring speed is 100-150 r/min.
6. The magnetic separation coagulation 3-pool stirrer according to claim 1, wherein the stirring speed is 30-60 r/min.
7. The device of claim 1, wherein the drug provided by the drug adding device is added into the mixing tank 1 and the mixing tank 2 respectively according to the functional requirements.
8. The magnetic separation and sedimentation tank as claimed in claim 1, wherein the inclination angle of the inclined plate placed in the magnetic separation and sedimentation tank is 60 degrees.
9. The apparatus of claim 1, wherein the magnetic powder recycling apparatus comprises a shear and a magnetic drum.
10. The system of claim 1, wherein the system implements a coal mine downhole source head water staging process by: firstly, filtering underground coal mine source head water through a coarse grid and a rotary drum fine grid to remove impurities with the granularity of more than 1.5mm, then enabling the water to automatically flow to a water inlet buffer tank, starting a lifting pump and a vibrating screen at the moment, lifting the water in the water inlet buffer tank into a high-efficiency swirler by the lifting pump, enabling coal slime discharged from the lower part of the high-efficiency swirler to fall onto the vibrating screen, removing the impurities with the granularity of more than 0.1mm under the combined action of the high-efficiency swirler and the vibrating screen, starting a coal slime conveying device at the moment, clearing and transporting the coal slime removed by the vibrating screen, combining the water discharged from the upper part of the high-efficiency swirler and the filtered water of the vibrating screen, entering a pre-settling adjusting tank, starting a sludge discharge pump in the pre-settling adjusting tank at the moment, and discharging the settled coal slime into a coal slime tank; the effluent of the pre-settling regulating tank sequentially flows into a magnetic separation mixing tank 1, a magnetic separation mixing tank 2 and a magnetic separation coagulation tank 3, a sludge discharge pump in a dosing device, a magnetic powder recovery device and a magnetic separation sedimentation tank is started at the moment, the produced water of the magnetic separation sedimentation tank automatically flows into a buffer tank, a pressure pump is started at the moment to lift the water to a high-efficiency filter, impurities with the granularity of more than 5 microns are removed, and the produced water flows to a water production tank; and thirdly, discharging the coal slime into a sludge concentration tank by using a pre-settling adjusting tank and magnetic powder recovery equipment, and starting a sludge inlet pump and coal slime dehydration equipment to perform coal slime dehydration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111344384.5A CN114149133A (en) | 2021-11-15 | 2021-11-15 | Process system for grading treatment of source water of underground coal mine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111344384.5A CN114149133A (en) | 2021-11-15 | 2021-11-15 | Process system for grading treatment of source water of underground coal mine |
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| CN114149133A true CN114149133A (en) | 2022-03-08 |
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| CN202111344384.5A Pending CN114149133A (en) | 2021-11-15 | 2021-11-15 | Process system for grading treatment of source water of underground coal mine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115259531A (en) * | 2022-07-28 | 2022-11-01 | 四川省煤炭设计研究院 | Process system, equipment and terminal for graded treatment of source water in underground coal mine |
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2021
- 2021-11-15 CN CN202111344384.5A patent/CN114149133A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115259531A (en) * | 2022-07-28 | 2022-11-01 | 四川省煤炭设计研究院 | Process system, equipment and terminal for graded treatment of source water in underground coal mine |
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