CN217265181U - Ozone oxidation treatment device for high-iron-content mine water - Google Patents

Ozone oxidation treatment device for high-iron-content mine water Download PDF

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Publication number
CN217265181U
CN217265181U CN202220481526.6U CN202220481526U CN217265181U CN 217265181 U CN217265181 U CN 217265181U CN 202220481526 U CN202220481526 U CN 202220481526U CN 217265181 U CN217265181 U CN 217265181U
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ozone oxidation
area
mine water
ozone
treatment device
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王松
刘瑞
王会刚
徐乾
王鑫
张智渊
王玉忠
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Shanxi Mingrui Hengxin Environmental Protection Co ltd
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Shanxi Mingrui Hengxin Environmental Protection Engineering Co ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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    • Y02W10/10Biological treatment of water, waste water, or sewage

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Abstract

The utility model relates to an ozone oxidation treatment device for high iron mine water belongs to mine water treatment technical field, has solved among the traditional processing method oxygen utilization ratio low, the unsatisfactory scheduling technical problem of treatment effect. The solution is as follows: an ozone oxidation treatment device for high-iron-content mine water comprises a pre-settling tank unit, an ozone oxidation unit and a coagulating sedimentation unit which are sequentially arranged from left to right; the pre-settling tank unit comprises a pre-settling tank, and an upper water inlet of the pre-settling tank is connected with a mine water source through a connecting pipeline; the ozone oxidation unit comprises an ozone oxidation tower, an ozone generator and a sodium hydroxide solution tank, and the coagulating sedimentation unit comprises a dosing device and a coagulating sedimentation tank. The utility model discloses a setting gradually of these three units of preliminary sedimentation tank unit, ozone oxidation unit and coagulating sedimentation unit, the effect is better to this system simple structure, the better waste water treatment of being convenient for has improved efficiency, the cost is reduced.

Description

Ozone oxidation treatment device for mine water with high iron content
Technical Field
The utility model belongs to the technical field of the mine water treatment, concretely relates to an ozone oxidation treatment device for high iron mine water.
Background
In the coal mining process, underground water is in contact with a coal bed and a rock stratum, a series of physical, chemical and biochemical reactions occur under the influence of human activities, and various complex pollutants in mine wastewater sequentially appear, so that the water environment quality is reduced, a water ecosystem is damaged, and the iron content is overhigh.
The traditional common iron ion removal methods comprise an aeration oxidation method, an oxychlorination method and a contact filtration oxidation method, and the traditional methods have the following defects: the aeration oxidation method is that water and air are fully contacted by an aeration device in an alkaline environment, ferrous iron in the water is oxidized into ferric iron to generate hydroxide, and then the hydroxide is precipitated in a coagulating sedimentation tank and filtered by a filter tank which takes quartz sand and anthracite as filter materials to remove precipitates, thereby achieving the iron removal effect. The 'contact filtration oxidation method' adds manganese sand as a solid catalyst on the basis of aeration oxidation to accelerate the oxidation of ferrous iron. The traditional iron removal method has low oxygen utilization rate, and the treatment effect is not ideal when the traditional iron removal method is used for treating high-concentration iron ion mine wastewater. The chlorine oxidation method uses chlorine as an oxidant instead of oxygen, and has strong adaptability to chlorine oxidation, but sludge formed by the method is difficult to concentrate and dehydrate.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome prior art's shortcoming, provide an ozone oxidation processing apparatus for high iron mine water, solved among the traditional processing method oxygen utilization ratio low, treatment effect unsatisfactory class of technical problem.
In order to solve the above problem, the technical scheme of the utility model is that: an ozone oxidation treatment device for high-iron-content mine water, wherein: comprises a pre-sedimentation tank unit, an ozone oxidation unit and a coagulating sedimentation unit which are arranged from left to right in sequence;
the pre-settling tank unit comprises a pre-settling tank, and an upper water inlet of the pre-settling tank is connected with a mine water source through a connecting pipeline; the left side in the pre-settling tank is a sediment falling area, the right side is a lifting area, the bottom surface of the lifting area is higher than that of the sediment falling area, and a lifting pump is arranged in the lifting area;
the ozone oxidation unit comprises an ozone oxidation tower, an ozone generator and a sodium hydroxide solution tank, wherein a water inlet at the upper part of the ozone oxidation tower is connected with a lift pump through a first connecting pipe, the sodium hydroxide solution tank is connected with the first connecting pipe close to one side of the ozone oxidation tower through a second connecting pipe, a gas outlet of the ozone generator is connected with a gas inlet at the bottom of the ozone oxidation tower through a gas inlet pipe, a first sludge discharge pipe is arranged at the bottom of the ozone oxidation tower, and a tail gas pipe is arranged at the top of the ozone oxidation tower;
the coagulating sedimentation unit comprises a dosing device and a coagulating sedimentation tank, wherein an upper water inlet of the coagulating sedimentation tank is connected with a lower water outlet of the ozone oxidation tower through a third connecting pipe, the dosing device is connected with a third connecting pipe close to one side of the coagulating sedimentation tank through a fourth connecting pipe, a sludge discharge port is formed in the bottom of the coagulating sedimentation tank, and a clear liquid outlet is formed in the upper part of the coagulating sedimentation tank.
Furthermore, a precipitation groove is arranged in the middle of the bottom surface of the precipitate falling area, the precipitation groove is of a trapezoidal structure, and the bottom surfaces of the precipitate falling areas on the two sides of the precipitation groove are first inclined surfaces inclined towards the precipitation groove; the bottom surface of the lifting area is a second inclined surface inclined towards the direction of the sediment falling area, and a second sludge discharge pipe is arranged at the lower part of the side wall of the sedimentation groove.
Further, the inclination of first inclined plane is 3 ~ 5 °, the inclination of second inclined plane is 6 ~ 8.
Further, a pall ring packing layer is arranged in the ozone oxidation tower.
Further, the height of the pall ring packing layer is 600 mm.
Further, the medicine adding device is a PAM medicine adding device.
Further, the tail gas pipe is connected with an ozone tail gas destructor.
Further, the left side in the coagulating sedimentation tank is a stirring area, the right side is a sedimentation area, a partition plate is arranged between the stirring area and the sedimentation area, and the top of the partition plate is provided with an overflow port;
the stirring area is internally provided with a stirring device, the sedimentation area is internally provided with a baffle plate, the baffle plate is provided with a plurality of groups of communicating pipes, the sludge discharge port is arranged at the bottom of the sedimentation area, and the sludge discharge port is of a downward-inclined conical structure.
Further, the baffle includes the riser on upper portion and the swash plate of lower part, the swash plate bottom is connected with mud discharging port top one side.
Further, the communicating pipe is an inclined pipe and has the same inclination direction as the inclined plate.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a setting gradually of these three units of preliminary sedimentation pond unit, ozone oxidation unit and coagulating sedimentation unit, the pit water is through preliminary sedimentation earlier, then carries out ozone oxidation to the supernatant, and in alkaline environment, ozone decomposes rapidly in aqueous, has formed the oxidant that chemical activity is stronger, forms ferric hydroxide, has shortened reaction time, and high-usage, waste water after ozone oxidation gets into and stirs flocculation and precipitation in the coagulating sedimentation unit; the sedimentation process of the sediment of being convenient for is set up to the inner structure of preliminary sedimentation tank and coagulating sedimentation tank, and the effect is better to this system simple structure is convenient for better waste water treatment, has improved efficiency, the cost is reduced.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
An ozone oxidation treatment device for mine water with high iron content as shown in figure 1, wherein: comprises a pre-sedimentation tank unit 1, an ozone oxidation unit 2 and a coagulating sedimentation unit 3 which are arranged from left to right in sequence;
the pre-settling tank unit 1 comprises a pre-settling tank 1-1, and an upper water inlet of the pre-settling tank 1-1 is connected with a mine water source through a connecting pipeline; the left side in the pre-settling tank 1-1 is a sediment falling area 1-1-1, the right side is a lifting area 1-1-2, the bottom surface of the lifting area 1-1-2 is higher than that of the sediment falling area 1-1-1, and a lifting pump 1-2 is arranged in the lifting area 1-1-2; mine water at a mine water source enters from a water inlet at the upper part of the pre-settling tank 1-1, precipitates are settled in a precipitate falling area 1-1-1, and supernate is sent into an ozone oxidation tower 2-1 through a first connecting pipe 2-4 by a lifting pump 1-2.
The ozone oxidation unit 2 comprises an ozone oxidation tower 2-1, an ozone generator 2-2 and a sodium hydroxide solution tank 2-3, a water inlet at the upper part of the ozone oxidation tower 2-1 is connected with a lift pump 1-2 through a first connecting pipe 2-4, the sodium hydroxide solution tank 2-3 is connected with a first connecting pipe 2-4 close to one side of the ozone oxidation tower 2-1 through a second connecting pipe 2-5, a gas outlet of the ozone generator 2-2 is connected with a gas inlet at the bottom of the ozone oxidation tower 2-1 through a gas inlet pipe 2-6, a first sludge discharge pipe 2-1-1 is arranged at the bottom of the ozone oxidation tower 2-1, and a tail gas pipe 2-1-2 is arranged at the top of the ozone oxidation tower 2-1; when the supernatant of the pre-settling tank 1-1 enters the ozone oxidation tower 2-1 through the first connecting pipe 2-4, the sodium hydroxide solution in the sodium hydroxide solution tank 2-3 simultaneously enters the first connecting pipe 2-4, the ozone generator 2-2 introduces ozone gas from the bottom air inlet of the ozone oxidation tower 2-1, the ozone gas is diffused from the bottom to the top, the introduced mine water falls from the top to the bottom, the ozone gas and the mine water form reverse flow, the ozone is rapidly decomposed in the water in an alkaline environment to generate hydroxyl radicals and intermediate products, and the hydroxyl radicals and the intermediate products are generated, so that the ozone is used for preparing the ozone water in the alkaline environmentThese products have very strong oxidizability, Fe 2+ Is oxidized into Fe 3+ ,Fe 3+ And OH - The ferric hydroxide is generated by combination, and the ferric hydroxide is of a flocculent structure, so that the subsequent precipitation process is facilitated.
The coagulating sedimentation unit 3 comprises a dosing device 3-1 and a coagulating sedimentation tank 3-2, an upper water inlet of the coagulating sedimentation tank 3-2 is connected with a lower water outlet of the ozone oxidation tower 2-1 through a third connecting pipe 3-3, the dosing device 3-1 is connected with a third connecting pipe 3-3 close to one side of the coagulating sedimentation tank 3-2 through a fourth connecting pipe 3-4, a sludge discharge port 3-2-1 is formed in the bottom of the coagulating sedimentation tank 3-2, and a clear liquid outlet 3-2-2 is formed in the upper portion of the coagulating sedimentation tank 3-2. The effluent of the ozone oxidation tower 2-1 and the liquid medicine in the medicine adding device 3-1 are simultaneously sent into a coagulating sedimentation tank 3-2, the liquid medicine is used as a flocculating agent and is fully mixed with the wastewater, the liquid medicine further carries out flocculating sedimentation on ferric hydroxide, finally, sediment is discharged from a sludge discharge port 3-2-1, and the supernatant is discharged after reaching the standard through a clear liquid outlet 3-2-2.
Further, a precipitation groove 1-1-3 is formed in the middle of the bottom surface of the precipitate falling area 1-1-1, the precipitation groove 1-1-3 is of a trapezoidal structure, and the bottom surfaces of the precipitate falling areas 1-1-1 on the two sides of the precipitation groove 1-1-3 are first inclined surfaces 1-1-4 inclined towards the precipitation groove 1-1-3; the bottom surface of the lifting area 1-1-2 is a second inclined surface 1-1-5 inclined towards the direction of the sediment falling area 1-1-1, and the lower part of the side wall of the sedimentation groove 1-1-3 is provided with a second sludge discharge pipe 1-1-6. The sedimentation groove 1-1-3 with the trapezoid structure is used for facilitating sedimentation of sediments, the first inclined plane 1-1-4 is arranged to enable the sediments in the sedimentation area 1-1-1 to fall into the sedimentation groove 1-1-3, the second inclined plane 1-1-5 is arranged to enable the sediments in the lifting area 1-1-2 to fall into the sedimentation area 1-1-1, and the sediments can be discharged from the second sludge discharge pipe 1-1-6 in the later period.
Further, the inclination of the first inclined surface 1-1-4 is 3-5 degrees, and the inclination of the second inclined surface 1-1-5 is 6-8 degrees. The slope is arranged so as to give the sediment a tendency to slide down into the sedimentation grooves 1-1-3 at all times.
Further, a pall ring packing layer 2-1-3 is arranged in the ozone oxidation tower 2-1. The arrangement of the pall ring packing layers 2-1-3 improves the transmission efficiency of ozone.
Further, the height of the pall ring filler layers 2-1-3 is 600 mm.
Further, the drug adding device 3-1 is a PAM drug adding device. PAM acts as a flocculant, accelerating the settling of the particles in suspension, with very significant acceleration of solution clarification.
Further, the tail gas pipe 2-1-2 is connected with an ozone tail gas destructor 2-7. Residual gas discharged from the ozone oxidation tower 2-1 contains unreacted ozone, and tail gas is directly discharged to cause environmental pollution, so that the tail gas is connected with an ozone tail gas destructor 2-7 through a tail gas pipe 2-1-2 to effectively destroy the residual ozone, and the environmental pollution is avoided.
Further, a stirring area 3-2-3 is arranged on the left side in the coagulating sedimentation tank 3-2, a sedimentation area 3-2-4 is arranged on the right side, a partition plate 3-2-5 is arranged between the stirring area 3-2-3 and the sedimentation area 3-2-4, and an overflow port 3-2-6 is arranged at the top of the partition plate 3-2-5;
the stirring area 3-2-3 is internally provided with a stirring device 3-2-7, the settling area 3-2-4 is internally provided with a baffle 3-2-8, the baffle 3-2-8 is provided with a plurality of groups of communicating pipes 3-2-9, the lower part of the communicating pipe 3-2-9 is an area for discharging sediments, the upper part is an area for cleaning liquid, the sludge discharge port 3-2-1 is arranged at the bottom of the settling area 3-2-4, and the sludge discharge port 3-2-1 is of a downward-inclined conical structure. Wastewater and liquid medicine enter a stirring area 3-2-3, are fully stirred through a stirring device 3-2-7, then enter a settling area 3-2-4 from an overflow port 3-2-6, precipitate falls into a sludge discharge port 3-2-1, and clear liquid enters the upper part through a communicating pipe 3-2-9 and is finally discharged from a clear liquid outlet 3-2-2.
Further, the partition plate 3-2-5 comprises a vertical plate 3-2-10 at the upper part and an inclined plate 3-2-11 at the lower part, and the bottom end of the inclined plate 3-2-11 is connected with one side of the top end of the sludge discharge port 3-2-1. The inclined plates 3-2-11 are arranged to facilitate the falling and discharging of the sediment.
Further, the communicating pipe 3-2-9 is an inclined pipe, and the inclined direction of the communicating pipe is the same as that of the inclined plate 3-2-11. The arrangement of the inclined pipe is convenient for the falling of the sediment and the separation of the sediment and the clear liquid, and is beneficial to the discharge of the subsequent clear liquid.

Claims (10)

1. An ozone oxidation treatment device for mine water with high iron content is characterized in that: comprises a pre-sedimentation tank unit (1), an ozone oxidation unit (2) and a coagulating sedimentation unit (3) which are arranged from left to right in sequence;
the pre-settling tank unit (1) comprises a pre-settling tank (1-1), and an upper water inlet of the pre-settling tank (1-1) is connected with a mine water source through a connecting pipeline; a sediment falling area (1-1-1) is arranged on the left side in the pre-settling tank (1-1), a lifting area (1-1-2) is arranged on the right side, the bottom surface of the lifting area (1-1-2) is higher than that of the sediment falling area (1-1-1), and a lifting pump (1-2) is arranged in the lifting area (1-1-2);
the ozone oxidation unit (2) comprises an ozone oxidation tower (2-1), an ozone generator (2-2) and a sodium hydroxide solution tank (2-3), the upper water inlet of the ozone oxidation tower (2-1) is connected with the lift pump (1-2) through a first connecting pipe (2-4), the sodium hydroxide solution tank (2-3) is connected with a first connecting pipe (2-4) close to one side of the ozone oxidation tower (2-1) through a second connecting pipe (2-5), the air outlet of the ozone generator (2-2) is connected with the air inlet at the bottom of the ozone oxidation tower (2-1) through an air inlet pipe (2-6), a first sludge discharge pipe (2-1-1) is arranged at the bottom of the ozone oxidation tower (2-1), and a tail gas pipe (2-1-2) is arranged at the top of the ozone oxidation tower (2-1);
the coagulating sedimentation unit (3) comprises a dosing device (3-1) and a coagulating sedimentation tank (3-2), wherein an upper water inlet of the coagulating sedimentation tank (3-2) is connected with a lower water outlet of the ozone oxidation tower (2-1) through a third connecting pipe (3-3), the dosing device (3-1) is connected with the third connecting pipe (3-3) close to one side of the coagulating sedimentation tank (3-2) through a fourth connecting pipe (3-4), a sludge discharge port (3-2-1) is formed in the bottom of the coagulating sedimentation tank (3-2), and a clear liquid outlet (3-2-2) is formed in the upper portion of the coagulating sedimentation tank (3-2).
2. The ozone oxidation treatment device for the mine water with high iron content according to claim 1, characterized in that: a precipitation groove (1-1-3) is formed in the middle of the bottom surface of the precipitate falling area (1-1-1), the precipitation groove (1-1-3) is of a trapezoidal structure, and the bottom surfaces of the precipitate falling area (1-1-1) on the two sides of the precipitation groove (1-1-3) are first inclined surfaces (1-1-4) inclined towards the precipitation groove (1-1-3); the bottom surface of the lifting area (1-1-2) is a second inclined surface (1-1-5) inclined towards the direction of the sediment falling area (1-1-1), and a second sludge discharge pipe (1-1-6) is arranged at the lower part of the side wall of the sedimentation groove (1-1-3).
3. The ozone oxidation treatment device for the mine water with high iron content according to claim 2, characterized in that: the inclination of the first inclined plane (1-1-4) is 3-5 degrees, and the inclination of the second inclined plane (1-1-5) is 6-8 degrees.
4. The ozone oxidation treatment device for the mine water with high iron content according to claim 1, characterized in that: and a pall ring packing layer (2-1-3) is arranged in the ozone oxidation tower (2-1).
5. The ozone oxidation treatment device for the mine water with high iron content according to claim 4, characterized in that: the height of the pall ring filler layer (2-1-3) is 600 mm.
6. The ozone oxidation treatment device for the mine water with high iron content according to claim 1, characterized in that: the drug adding device (3-1) is a PAM drug adding device.
7. The ozone oxidation treatment device for the mine water with high iron content according to claim 1, characterized in that: the tail gas pipe (2-1-2) is connected with an ozone tail gas destructor (2-7).
8. The ozone oxidation treatment device for the mine water with high iron content according to claim 1, characterized in that: the left side in the coagulating sedimentation tank (3-2) is a stirring area (3-2-3), the right side is a sedimentation area (3-2-4), a partition plate (3-2-5) is arranged between the stirring area (3-2-3) and the sedimentation area (3-2-4), and the top of the partition plate (3-2-5) is provided with an overflow port (3-2-6);
the stirring area (3-2-3) is internally provided with a stirring device (3-2-7), the settling area (3-2-4) is internally provided with a baffle (3-2-8), the baffle (3-2-8) is provided with a plurality of groups of communicating pipes (3-2-9), the sludge discharge port (3-2-1) is arranged at the bottom of the settling area (3-2-4), and the sludge discharge port (3-2-1) is of a downward-inclined conical structure.
9. The ozone oxidation treatment device for the mine water with high iron content according to claim 8, characterized in that: the partition plate (3-2-5) comprises a vertical plate (3-2-10) at the upper part and an inclined plate (3-2-11) at the lower part, and the bottom end of the inclined plate (3-2-11) is connected with one side of the top end of the sludge discharge port (3-2-1).
10. The ozone oxidation treatment device for the mine water with high iron content according to claim 9, characterized in that: the communicating pipe (3-2-9) is an inclined pipe and has the same inclination direction with the inclined plate (3-2-11).
CN202220481526.6U 2022-03-07 2022-03-07 Ozone oxidation treatment device for high-iron-content mine water Active CN217265181U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115583741A (en) * 2022-09-14 2023-01-10 中赟国际工程有限公司 Method for treating low-salt high-suspended matter mine water to reach earth surface III-class standard

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115583741A (en) * 2022-09-14 2023-01-10 中赟国际工程有限公司 Method for treating low-salt high-suspended matter mine water to reach earth surface III-class standard

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Address after: Room 807, 8th Floor, No. 3 Zhichuangcheng, No.1 Qimao Road, Xuefu Industrial Park, Shanxi Transformation and Comprehensive Reform Demonstration Zone, Taiyuan City, Shanxi Province, 030000

Patentee after: Shanxi Mingrui Hengxin Environmental Protection Co.,Ltd.

Address before: Rooms 1101 and 1102, 11th floor, Dingchen Times Square, No.5, Fazhan Road, Taiyuan Xuefu Park, Taiyuan comprehensive reform demonstration zone, Shanxi Province 030000

Patentee before: SHANXI MINGRUI HENGXIN ENVIRONMENTAL PROTECTION ENGINEERING CO.,LTD.