CN210595613U - Purification device for coal mine iron-rich limestone water - Google Patents
Purification device for coal mine iron-rich limestone water Download PDFInfo
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- CN210595613U CN210595613U CN201920690502.XU CN201920690502U CN210595613U CN 210595613 U CN210595613 U CN 210595613U CN 201920690502 U CN201920690502 U CN 201920690502U CN 210595613 U CN210595613 U CN 210595613U
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Abstract
The utility model provides a purifier of rich iron limestone water in colliery, including the tank, the second grade filter tube, electrochemical oxidation device, filter tower and power, the tank, the second grade filter tube, electrochemical oxidation device and filter tower connect gradually, rich iron limestone water is stored to the tank, first filter membrane and second filter membrane are placed to the inside of second grade filter tube, first filter membrane and second filter membrane filter the rich iron limestone water that flows into the second grade filter tube in proper order, electrochemical oxidation device's top sets up the charging cover, add alkali lye in to electrochemical oxidation device through the charging cover, electrochemical oxidation device's inside sets up the electrode polar plate, the negative pole of electrode polar plate is connected with the negative pole of power, the positive pole of electrode polar plate is connected with the positive pole of power, the rich iron limestone water that gets rid of divalent iron ion through electrochemical oxidation device goes into in the filter tower and continues to filter.
Description
Technical Field
The utility model relates to the technical field of environmental protection, especially, relate to a purifier of rich iron limestone water in colliery.
Background
Because the mining time of part of coal mines in China is long and shallow coal is limited, the mining depth must be increased for utilizing mineral resources and ensuring the yield. Along with the increase of the mining depth, a large amount of coal bed bottom plate limestone water can be generated, and if the limestone water is directly discharged outside without being processed, the environment is influenced and resources are wasted. The limestone water has the characteristics of high iron content and difficult reuse, is an important component of mine water, and is one of the inducements of water damage. Therefore, the comprehensive control of the iron removal of the limestone water is one of the measures of safe production implementation and energy conservation and emission reduction policies in mining areas, and has environmental and social benefits.
At present, the research on the aspect of iron removal treatment of limestone water is less, and the common dilution method has the problems of increasing the mine water treatment capacity and the operation cost. For example, the conventional method for treating and utilizing mine water is to pump and discharge the mine water to the ground, construct a mine water treatment plant on the ground, and use the effluent after the mine water purification treatment as underground water, ground industrial water or standard-reaching discharge. Traditional mine water is purified on the ground, and is supplied to the underground by a pipeline, so that the cost is not increased, the maintenance difficulty and the workload are improved, and the underground environment is complex and changeable, the water delivery line is far, so that larger unsafe factors exist, and hidden dangers are brought to the coal mine production.
The electrochemical oxidation method is an environment-friendly advanced oxidation technology. No oxidant is needed to be added in the wastewater treatment, and the chemical pollution risk is small. The reaction condition is mild, and the reaction is generally carried out at normal temperature and normal pressure; has air floating, flocculating, sterilizing and oxidizing effects. The reaction device and the process are simple, the operability is strong, and the automatic control is easy to realize.
Disclosure of Invention
In view of this, the utility model provides a purifier of rich iron limestone water in colliery, this purifier utilize the electrochemical oxidation method to purify rich iron limestone water in colliery, and chemical pollution is little.
The utility model provides a coal mine iron-rich limestone water purification device, which comprises a water storage tank, a secondary filter pipe, an electrochemical oxidation device, a filter tower and a power supply, wherein the water storage tank, the secondary filter pipe, the electrochemical oxidation device and the filter tower are sequentially connected, the water storage tank stores iron-rich limestone water, a first filter membrane and a second filter membrane are arranged inside the secondary filter pipe, the first filter membrane and the second filter membrane sequentially filter the iron-rich limestone water flowing into the secondary filter pipe, a feeding cover is arranged above the electrochemical oxidation device, alkali liquor is added into the electrochemical oxidation device through the feeding cover, an electrode polar plate is arranged inside the electrochemical oxidation device, the cathode of the electrode polar plate is connected with the cathode of the power supply, the anode of the electrode polar plate is connected with the anode of the power supply, the anode of the electrode polar plate generates oxygen, and oxidizes ferrous ions in the iron-rich limestone water into ferric ions, the cathode of the electrode polar plate generates hydrogen to increase hydroxide ions, the ferric ions and the hydroxide ions react to generate precipitates, and the iron-rich limestone water from which the ferrous ions are removed by the electrochemical oxidation device flows into the filter tower to be continuously filtered.
Further, the reservoir is connected with the secondary filter pipe through a first water pipe, a water pump is arranged on the first water pipe, and the iron-rich limestone water in the reservoir is conveyed to the secondary filter pipe through the water pump.
Further, the second grade filter tube is connected with the electrochemical oxidation device through a second water pipe, a control valve and a water inlet flow meter are arranged on the second water pipe, the water inlet flow meter is arranged at the rear end of the control valve, and the water inlet flow meter detects the flow of the iron-rich limestone water flowing into the electrochemical oxidation device.
Further, a pH sensor, a temperature sensor and a dissolved oxygen determinator are arranged in the electrochemical oxidation device, the pH sensor detects the pH value of the iron-rich limestone water in the electrochemical oxidation device, the temperature sensor detects the temperature of the iron-rich limestone water in the electrochemical oxidation device, and the dissolved oxygen determinator measures the dissolved oxygen content in the electrochemical oxidation device.
Furthermore, the aperture of the first filter membrane is 300-500 μm, and the aperture of the second filter membrane is 100-300 μm.
Furthermore, anthracite with the particle size of 0.5-2.5 mm is placed in the filter tower, and the filling height of the anthracite is 1.4 m.
Further, a hollow stirring rod is connected to the lower portion of the feeding cover.
The purification device provided by the utility model can realize the purification treatment of the iron-rich limestone water, reduce the pollution to the environment caused by the drainage workload of the limestone water and the mine water discharge, and reduce the mine water lifting cost; the utility model provides a purifier can utilize the space of original tunnel and chamber to arrange, has saved the investment of civil engineering to saved and built the required land resource of mine water treatment station on ground.
The utility model provides a coal mine iron-rich limestone water purification device which utilizes an electrochemical oxidation device to rapidly generate oxygen, thereby greatly accelerating the oxidation rate of ferrous iron in the limestone water; the electrochemical oxidation device used by the utility model does not need to add an oxidant, has small chemical pollution risk, produces hydrogen peroxide in the electrochemical oxidation process and has the function of killing microorganisms, is favorable for the comprehensive utilization of purified water, has dual functions of oxidation and sedimentation, and does not need to be provided with a secondary sedimentation tank; the utility model provides a purifier simple structure can place in a flexible way, easily at colliery downhole work environment installation.
Drawings
Fig. 1 is the structure schematic diagram of the utility model relates to a coal mine iron-rich limestone water purification device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be further described below with reference to the accompanying drawings.
Referring to fig. 1, an embodiment of the present invention provides a purification apparatus for coal mine iron-rich limestone water, including a water storage tank 1, a secondary filter pipe 2, an electrochemical oxidation apparatus 3, a filter tower 4 and a power supply 5, wherein the water storage tank 1, the secondary filter pipe 2, the electrochemical oxidation apparatus 3 and the filter tower 4 are connected in sequence.
The water storage tank 1 is used for storing and standing the iron-rich limestone water flowing in from the water pumping and draining pipeline, the water storage tank 1 is connected with the secondary filter pipe 2 through the first water pipe 11, the water pump 12 is arranged on the first water pipe 11, the iron-rich limestone water in the water storage tank 1 is conveyed to the secondary filter pipe 2 through the water pump 12, and the water pump 12 is a high-pressure forward and reverse electric water pump.
The first filter membrane 21 and the second filter membrane 22 are placed in the secondary filter pipe 2, the first discharge valve 23 and the second discharge valve 24 are arranged at the bottom of the secondary filter pipe 2, the first discharge valve 23 is communicated with the second discharge valve 24 through the secondary filter blow-off pipe 25, the bottom of the secondary filter pipe 2 is of a conical structure, the aperture of the first filter membrane 21 is 300-500 micrometers, the aperture of the second filter membrane 22 is 100-300 micrometers, the first filter membrane 21 and the second filter membrane 22 are used for filtering and removing particles in the iron-rich limestone water, and the particles in the secondary filter pipe 2 can be discharged to the secondary filter blow-off pipe 25 by opening the first discharge valve 23 and the second discharge valve 24.
The secondary filter pipe 2 is connected with the electrochemical oxidation device 3 through a second water pipe 26, the iron-rich limestone water filtered by the secondary filter pipe 2 flows into the electrochemical oxidation device 3 through the second water pipe 26, a control valve 261 and a water inlet flow meter 262 are arranged on the second water pipe 26, the water inlet flow meter 262 is arranged at the rear end of the control valve 261, a feeding cover 31 is arranged above the electrochemical oxidation device 3, a hollow stirring rod 32 is connected below the feeding cover 31, a micropore structure is arranged below the stirring rod 32, alkali liquor is added into the electrochemical oxidation device 3 through the feeding cover 31, the alkali liquor in the feeding cover 31 flows into the stirring rod 32 and then flows into the electrochemical oxidation device 3 through the micropore structure, the stirring rod 32 is connected with a rotating motor 33, the stirring rod 32 is driven to rotate after the rotating motor 33 is started to ensure that the iron-rich limestone water and the alkali liquor in the electrochemical oxidation device 3 are fully mixed, an electrode plate 34 is arranged inside the electrochemical oxidation device 3, The pH sensor 35, the temperature sensor 36 and the dissolved oxygen determinator 37, the anode of the electrode plate 34 is connected with the anode of the power supply 5, the cathode of the electrode plate 34 is connected with the cathode of the power supply 5, after the power supply 5 is switched on, the anode of the electrode plate 34 generates oxygen to generate oxidation reaction, divalent iron ions in the iron-rich limestone water are rapidly oxidized into trivalent iron ions, the trivalent iron ions react with alkali liquor to generate precipitate, the precipitate sinks to the lower part of the electrochemical oxidation device 3 under the action of gravity, the precipitate is discharged through a third discharge valve 38 arranged at the lower part of the electrochemical oxidation device 3, the cathode of the electrode plate 34 generates reduction reaction, hydrogen ions are converted into hydrogen, hydroxide ions in the water are increased, the precipitation effect is enhanced, hydrogen peroxide generated in the oxidation reduction process can kill microorganisms in the iron-rich limestone water, the lower end of the electrochemical oxidation device 3 is in a conical structure, the electrode plate 34 is a titanium plate or a platinum plate.
The pH sensor 35 detects the pH value of the iron-rich limestone water in the electrochemical oxidation apparatus 3, the temperature sensor 36 detects the temperature of the iron-rich limestone water in the electrochemical oxidation apparatus 3, the dissolved oxygen determinator 37 measures the dissolved oxygen content in the electrochemical oxidation apparatus 3, and the water inflow meter 262 detects the flow rate of the iron-rich limestone water flowing into the electrochemical oxidation apparatus 3.
The outlet end of the electrochemical oxidation device 3 is connected with the uppermost filter cap of the filter tower 4, the iron-rich limestone water treated by the electrochemical oxidation device 3 flows into the filter tower 4 through the outlet end and the filter cap, the filter cap of the filter tower 4 can distribute water uniformly, anthracite 41 with the particle size of 0.5-2.5 mm is placed in the filter tower 4, the filling height of the anthracite 41 is 1.4m, the anthracite 41 is used for further removing suspended particles to realize water purification, the outlet of the filter tower 4 is connected with a third water pipe 42, water flowing out of the filter tower 4 can be stored in a water pool to supplement water to a water supply system, a water suction pump 421 is arranged on the third water pipe 42, when the filter speed is low, the water suction pump is started to inject water into the filter tower 4 to realize backwashing, the anthracite 41 can be washed clean under the hydraulic action of water flow, and wastewater generated by the backwashing enters the electrochemical oxidation device 3 to be treated and then is.
And the particles in the secondary filtering blow-off pipe 25 and the precipitate in the electrochemical oxidation device 3 are conveyed to a sludge tank.
The working process of the purification device is as follows:
(1) the method comprises the following steps that iron-rich limestone water of a coal mine underground bottom plate enters a water storage tank 1 through a water pumping and draining pipeline, and particulate matters with larger particle sizes are removed in the water storage tank 1 through standing and precipitation;
(2) sending the iron-rich limestone water into the secondary filter pipe 2 by using a water pump 12 at a certain pressure and flow rate, wherein the iron-rich limestone water firstly flows through a first filter membrane 21 with the thickness of 300-;
(3) the iron-rich limestone water filtered by the first filter membrane 21 and the second filter membrane 22 enters the electrochemical oxidation device 3 through the second water pipe 26, a titanium electrode plate is externally connected with a 36V power supply, oxygen is continuously generated by electrolysis of an anode, so that the dissolved oxygen in the water is maintained at 7-9mg/L, a dissolved oxygen tester 37 detects the content of the dissolved oxygen in the iron-rich limestone water, when the dissolved oxygen tester 37 detects that the concentration of the dissolved oxygen is too high, the power supply 5 is cut off, a pH sensor 35 monitors the pH value of the iron-rich limestone water in real time, a sodium hydroxide solution with the concentration of 5% is added into the electrochemical oxidation device 3 through a feeding cover 31, the pH value of the iron-rich limestone water is maintained between 7 and 8, after stirring reaction for a period of time, the mixture is stood to remove precipitates and is discharged from a third discharge valve 38, and hydrogen peroxide generated in the oxidation process can kill microorganisms in the limestone water;
(4) the wastewater purified by the electrochemical oxidation device 3 enters the filter tower 4 through the filter cap, passes through anthracite 41 filter material with the particle size of 0.5-1.2 mm at a certain flow rate, enters the water tank from a third water pipe 42 at the bottom of the filter tower 4 after being filtered, and is backwashed by water in the water tank and a water suction pump 421 when the filter speed is low, wherein the backwashing strength is 16L/(s.m)2) And the flushing duration is 5min, and the wastewater generated by backwashing enters the electrochemical oxidation device 3 for treatment and then is discharged.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (7)
1. The purification device for the coal mine iron-rich limestone water is characterized by comprising a water storage tank, a secondary filter pipe, an electrochemical oxidation device, a filter tower and a power supply, wherein the water storage tank, the secondary filter pipe, the electrochemical oxidation device and the filter tower are sequentially connected, the water storage tank stores the iron-rich limestone water, a first filter membrane and a second filter membrane are placed inside the secondary filter pipe and sequentially filter the iron-rich limestone water flowing into the secondary filter pipe, a feeding cover is arranged above the electrochemical oxidation device, alkali liquor is added into the electrochemical oxidation device through the feeding cover, an electrode plate is arranged inside the electrochemical oxidation device, the cathode of the electrode plate is connected with the cathode of the power supply, the anode of the electrode plate is connected with the anode of the power supply, the electrochemical oxidation device is used for removing divalent iron ions in the iron-rich limestone water, the iron-rich limestone water from which the ferrous ions are removed by the electrochemical oxidation device flows into the filter tower to be continuously filtered.
2. The device for purifying the coal mine iron-rich limestone water as claimed in claim 1, wherein the water storage tank is connected with the secondary filter pipe through a first water pipe, a water pump is arranged on the first water pipe, and the iron-rich limestone water in the water storage tank is conveyed to the secondary filter pipe through the water pump.
3. The coal mine iron-rich limestone water purification device as claimed in claim 1, wherein the secondary filter pipe is connected with the electrochemical oxidation device through a second water pipe, a control valve and a water inlet flow meter are arranged on the second water pipe, the water inlet flow meter is arranged at the rear end of the control valve, and the water inlet flow meter detects the flow of the iron-rich limestone water flowing into the electrochemical oxidation device.
4. The coal mine iron rich limestone water purification device as claimed in claim 1, wherein a pH sensor, a temperature sensor and a dissolved oxygen meter are placed in the electrochemical oxidation device, the pH sensor detects the pH value of the iron rich limestone water in the electrochemical oxidation device, the temperature sensor detects the temperature of the iron rich limestone water in the electrochemical oxidation device, and the dissolved oxygen meter measures the dissolved oxygen content in the electrochemical oxidation device.
5. The coal mine iron-rich limestone water purification device as claimed in claim 1, wherein the pore size of the first filter membrane is 300-500 μm, and the pore size of the second filter membrane is 100-300 μm.
6. The coal mine iron-rich limestone water purification device as claimed in claim 1, wherein anthracite coal with the particle size of 0.5-2.5 mm is placed in the filter tower, and the filling height of the anthracite coal is 1.4 m.
7. The coal mine iron-rich limestone water purification device as claimed in claim 1, wherein a hollow stirring rod is connected below the feeding cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920690502.XU CN210595613U (en) | 2019-05-14 | 2019-05-14 | Purification device for coal mine iron-rich limestone water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920690502.XU CN210595613U (en) | 2019-05-14 | 2019-05-14 | Purification device for coal mine iron-rich limestone water |
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| Publication Number | Publication Date |
|---|---|
| CN210595613U true CN210595613U (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920690502.XU Expired - Fee Related CN210595613U (en) | 2019-05-14 | 2019-05-14 | Purification device for coal mine iron-rich limestone water |
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| CN (1) | CN210595613U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110143703A (en) * | 2019-05-14 | 2019-08-20 | 中国地质大学（武汉） | A kind of coal mine richness iron limestone water purifying means |
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2019
- 2019-05-14 CN CN201920690502.XU patent/CN210595613U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110143703A (en) * | 2019-05-14 | 2019-08-20 | 中国地质大学（武汉） | A kind of coal mine richness iron limestone water purifying means |
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Granted publication date: 20200522 Termination date: 20210514 |
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| CF01 | Termination of patent right due to non-payment of annual fee |