CN216337045U - Acid effluent disposal system in mine - Google Patents
Acid effluent disposal system in mine Download PDFInfo
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- CN216337045U CN216337045U CN202123187409.3U CN202123187409U CN216337045U CN 216337045 U CN216337045 U CN 216337045U CN 202123187409 U CN202123187409 U CN 202123187409U CN 216337045 U CN216337045 U CN 216337045U
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Abstract
A mine acidic wastewater treatment system comprises a reaction module, a dosing module, a mud-water separation module and a sludge dewatering module; the reaction module comprises more than two reaction barrels; the dosing module comprises a medicament storage tank, a spiral feeding machine, a flowmeter, a first PLC (programmable logic controller), a medicament blending barrel, a dosing pump, a second PLC and a pH on-line detector; the first PLC variable frequency controller is respectively connected with the flowmeter and the spiral feeding machine and controls the medicament conveying capacity of the spiral feeding machine according to the addition amount of tap water; the second PLC variable frequency controller is respectively connected with the pH on-line detector and the dosing pump, and controls the addition amount of the liquid medicine of the dosing pump according to the measured pH value; the water inlet of the mud-water separation module is connected with the water outlet of the reaction module, and the sludge outlet of the mud-water separation module is connected with the sludge inlet of the sludge dehydration module. The utility model has the advantages of short construction period, small occupied area, high medicament utilization rate, flexible movement and the like.
Description
Technical Field
The utility model belongs to the technical field of mine wastewater treatment, and particularly relates to a mine acidic wastewater treatment system.
Background
The acidic wastewater is wastewater containing acidic substances such as sulfuric acid, nitric acid, hydrochloric acid, phosphoric acid, organic acids and the like with relatively low concentrations. The discharge of acid waste water, especially the discharge of acid waste water in the mining industry, is one of the serious problems of environmental pollution, and has the characteristics of wide pollution range, long pollution duration, serious harm degree and the like.
At present, in the acid mine wastewater treatment, a neutralization and precipitation method is mostly adopted, and the acid mine wastewater treatment is mainly carried out in a civil neutralization pond and a precipitation pond mode.
Therefore, a new mine acid wastewater treatment system needs to be designed.
Disclosure of Invention
The utility model aims to provide a mine acid wastewater treatment system to solve the problems of long construction period, large occupied area and low medicament utilization rate in the existing mine acid wastewater treatment in the background technology.
In order to achieve the aim, the utility model provides a mine acid wastewater treatment system which comprises a reaction module for neutralizing mine acid wastewater, a dosing module for adjusting alkali and dosing for the reaction module, a mud-water separation module for quickly separating mud from water and a sludge dehydration module for storing and dehydrating sludge;
the reaction module comprises more than two reaction barrels which are sequentially connected in series;
the dosing module comprises a medicament storage tank, a spiral feeding machine, a flowmeter, a first PLC (programmable logic controller) variable frequency controller, a medicament blending barrel, a dosing pump, a second PLC variable frequency controller and a pH on-line detector; one end of the spiral feeding machine is arranged below the medicament storage tank, and the other end of the spiral feeding machine is arranged above the medicament blending barrel and is used for conveying the alkali-blending medicament in the medicament storage tank to the medicament blending barrel; the flowmeter is arranged on a tap water adding pipeline of the medicament blending barrel; the first PLC variable frequency controller is respectively connected with the flowmeter and the spiral feeding machine and controls the medicament conveying capacity of the spiral feeding machine according to the addition amount of tap water; the pH online detector is arranged in the last reaction barrel before the wastewater leaves the reaction module, the dosing pump is used for adding the liquid medicine prepared in the medicine preparation barrel into the reaction barrel, the second PLC frequency-variable controller is respectively connected with the pH online detector and the dosing pump, and the liquid medicine adding amount of the dosing pump is controlled according to the pH value detected by the pH online detector;
the mud-water separation module comprises integrated high-density loading and precipitating equipment; the sludge dewatering module comprises integrated sludge dewatering equipment; the water inlet of the mud-water separation module is connected with the water outlet of the reaction module, and the sludge outlet of the mud-water separation module is connected with the sludge inlet of the sludge dewatering module.
In a specific embodiment, the integrated high density loading settling device is a container structure; the integrated sludge dewatering equipment is of a container structure.
In a specific embodiment, the integrated sludge dewatering apparatus includes a dewatering machine and a sludge storage tank.
In a specific embodiment, the dehydrator is a stacked screw dehydrator or a belt press filter dehydrator.
In a specific embodiment, the reaction barrel is made of PE; a stirring device is arranged in the reaction barrel, and an emptying valve is arranged at the bottom of the side wall of the reaction barrel.
In a specific embodiment, a circulation pipeline is further arranged between the sludge dewatering module and the reaction module and used for guiding filtrate generated by sludge dewatering back to the water inlet of the reaction module.
In a specific embodiment, the water inlet of the first reaction barrel, into which the wastewater enters after entering the reaction module, is arranged at one side position of the upper part of the barrel wall or the top of the barrel, and the water outlet is arranged at the lower part of the barrel wall opposite to the water inlet; the water outlet of the last reaction barrel before the wastewater leaves the reaction module is arranged at the upper part of the barrel wall, and the water inlet is arranged at the lower part of the barrel wall opposite to the water outlet.
In a specific embodiment, the number of the reaction barrels is even, every two reaction barrels are in one group, the water inlet of the first reaction barrel in each group is arranged at one side position of the upper part or the top part of the barrel wall, and the water outlet is arranged at the lower part of the barrel wall opposite to the water inlet; the water outlet of the second reaction barrel in each group is arranged at the upper part of the barrel wall, and the water inlet is arranged at the lower part of the barrel wall opposite to the water outlet.
In a specific embodiment, the water outlet of the reaction module is higher than the water inlet of the mud-water separation module.
In a specific embodiment, the horizontal height of the water outlet of the reaction module is 0.5-1 m higher than the horizontal height of the water inlet of the mud-water separation module.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model has the advantages of short construction period, small occupied area, high medicament utilization rate, flexible movement and the like.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a schematic diagram of one embodiment of the present invention;
wherein, 1, a reaction module; 2. a dosing module; 3. a mud-water separation module; 4. a sludge dewatering module; 11. a reaction barrel; 21. a medicament reservoir; 22. a first PLC variable frequency controller; 23. a spiral feeder; 24. a pH on-line detector; 25. a second PLC variable frequency controller; 26. a dosing pump; 27. a medicament blending barrel; 28. a flow meter; 31. an integrated high density loading precipitation apparatus; 41. an integrated sludge dewatering device.
Detailed Description
Embodiments of the utility model will be described in detail below with reference to the drawings, but the utility model can be implemented in many different ways, which are defined and covered by the claims.
Example 1
The utility model provides a mine acid wastewater treatment system, which comprises a reaction module 1 for neutralization reaction of mine acid wastewater, a dosing module 2 for alkali adjustment and dosing of the reaction module, a mud-water separation module 3 for fast mud-water separation, and a sludge dewatering module 4 for sludge storage and dewatering treatment;
the reaction module 1 comprises more than two reaction barrels 11 which are sequentially connected in series;
the dosing module 2 comprises a medicament storage tank 21, a spiral feeder 23, a flowmeter 28, a first PLC (programmable logic controller) 22, a medicament blending barrel 27, a dosing pump 26, a second PLC 25 and a pH online detector 24;
one end of the spiral feeding machine 23 is arranged below the medicament storage tank 21, and the other end of the spiral feeding machine is arranged above the medicament blending barrel 27 and is used for conveying the alkali-blending medicament in the medicament storage tank to the medicament blending barrel; the flowmeter is arranged on a tap water adding pipeline of the medicament blending barrel; the first PLC frequency conversion controller is respectively connected with the flowmeter and the spiral feeding machine, and controls the medicament conveying capacity of the spiral feeding machine according to the addition amount of tap water. Preferably, the concentration of the drug is controlled to 5% to 10%. The alkali adjustment agent stored in the agent tank 21 is preferably a complex alkali.
The pH online detector is arranged in the last reaction barrel before the wastewater leaves the reaction module, the dosing pump is used for adding the liquid medicine prepared in the medicine preparation barrel into the reaction barrel, the second PLC frequency-variable controller is respectively connected with the pH online detector and the dosing pump, and the liquid medicine adding amount of the dosing pump is controlled according to the pH value detected by the pH online detector;
the mud-water separation module 3 comprises an integrated high-density loading precipitation device 31;
the sludge dewatering module 4 comprises an integrated sludge dewatering device 41;
the water inlet of the mud-water separation module 3 is connected with the water outlet of the reaction module 1, and the sludge outlet of the mud-water separation module 3 is connected with the sludge inlet of the sludge dewatering module 4.
The integrated high density loaded precipitation apparatus 31 is commercially available.
The integrated high-density loading and settling device 31 is of a container structure; the integrated sludge dewatering device 41 is of a container structure.
The integrated sludge dewatering apparatus 41 includes a dewatering machine and a sludge storage bucket.
The dehydrator is a screw-overlapping dehydrator or a belt type filter-pressing dehydrator.
The reaction barrel 11 is made of PE materials; a stirring device is arranged in the reaction barrel 11, and an emptying valve is arranged at the bottom of the side wall of the reaction barrel.
And a circulating pipeline is also arranged between the sludge dewatering module 4 and the reaction module 1 and is used for guiding filtrate generated by sludge dewatering back to the water inlet of the reaction module 1.
The water inlet of the first reaction barrel for the wastewater to enter after entering the reaction module 1 is arranged at the upper part of the barrel wall or at one side of the top of the barrel, and the water outlet is arranged at the lower part of the barrel wall opposite to the water inlet; the water outlet of the last reaction barrel before the wastewater leaves the reaction module is arranged at the upper part of the barrel wall, and the water inlet is arranged at the lower part of the barrel wall opposite to the water outlet.
The number of the reaction barrels is even, every two reaction barrels are in one group, the water inlet of the first reaction barrel in each group is arranged at the upper part of the barrel wall or at one side position of the top of the barrel, and the water outlet is arranged at the lower part of the barrel wall opposite to the water inlet; the water outlet of the second reaction barrel in each group is arranged at the upper part of the barrel wall, and the water inlet is arranged at the lower part of the barrel wall opposite to the water outlet. The number of reaction barrels is increased or decreased as appropriate according to the amount of wastewater treatment.
The horizontal height of the water outlet of the reaction module 1 is higher than that of the water inlet of the mud-water separation module 3.
The horizontal height of the water outlet of the reaction module 1 is 0.5-1 m higher than that of the water inlet of the mud-water separation module 3.
During waste water treatment, waste water firstly enters a reaction barrel in the reaction module 1, is synchronously added with alkali for neutralization, and is added with medicine through a pH on-line detector and a second PLC variable frequency controller to control a medicine adding pump, so that the pH value of the waste water is automatically controlled, and the pH value of the waste water is controlled to be between 8 and 9. And the wastewater after the neutralization reaction enters the integrated high-density loading and precipitating equipment through overflow, and is subjected to advanced treatment and rapid precipitation through the integrated high-density loading and precipitating equipment. Supernatant overflow of the settling zone of the integrated high-density loading and settling equipment is discharged up to the standard, sludge at the bottom returns to the front end of the integrated high-density loading and settling equipment through a small part of a sludge pump to keep the higher sludge concentration of the equipment, most of sludge enters a sludge dewatering module, sludge dewatering is carried out through the integrated sludge dewatering equipment, a dewatered sludge cake is transported out or buried harmlessly, and filtrate enters a reaction module to continue neutralization reaction.
According to the utility model, the reaction barrels 11 are arranged to enable the composite alkali to fully react with the wastewater, so that the utilization rate of the medicament is improved, and meanwhile, the reaction barrels 11 made of PE materials can avoid the problem of corrosion of the acidic wastewater to the reaction barrels. The water inlet and the water outlet are arranged in a vertically opposite manner, so that the deposition of reaction sediments at the bottom of the reaction barrel 11 can be reduced. The water outlet of the last reaction barrel 11 of the reaction module 1 is 0.5-1.0 m higher than the water inlet of the mud-water separation module 3, so that wastewater overflows into the mud-water separation module 3, the use of a lifting pump can be reduced, the device investment is saved, and the energy consumption is reduced. Medicine module 2 dispenses according to the first PLC variable frequency controller control 22 screw conveyer 23 of running water cooperation, realizes automated operation and accurate dispensing. The pH on-line detector 24 and the second PLC frequency conversion controller 25 control the dosing pump 26 to dose, so as to realize the automatic control of the pH value of the wastewater. The integrated high-density loading precipitation equipment 31 adopted by the mud-water separation module 3 can be quickly installed and put into production and flexibly moved, and can simultaneously make the wastewater quickly precipitate and separate, and the hydraulic retention time is less than 20 minutes. The sludge dewatering module 4 adopts the integrated sludge dewatering equipment 41 and also has the advantages of quick installation and production and flexible movement.
The foregoing is a more detailed description of the utility model in connection with specific preferred embodiments and it is not intended that the utility model be limited to these specific details. For those skilled in the art to which the utility model pertains, several simple deductions and substitutions can be made without departing from the spirit of the utility model, and all shall be considered as belonging to the protection scope of the utility model.
Claims (10)
1. The mine acid wastewater treatment system is characterized by comprising a reaction module (1) for neutralizing mine acid wastewater, a dosing module (2) for adjusting alkali and dosing for the reaction module, a mud-water separation module (3) for quickly separating mud from water, and a sludge dewatering module (4) for storing and dewatering sludge;
the reaction module (1) comprises more than two reaction barrels (11) which are sequentially connected in series;
the dosing module (2) comprises a medicament storage tank (21), a spiral feeding machine (23), a flowmeter (28), a first PLC (programmable logic controller) variable frequency controller (22), a medicament blending barrel (27), a dosing pump (26), a second PLC variable frequency controller (25) and a pH online detector (24); one end of the spiral feeding machine (23) is arranged below the medicament storage tank (21), and the other end of the spiral feeding machine is arranged above the medicament blending barrel (27) and is used for conveying the alkali-adjusting medicament in the medicament storage tank to the medicament blending barrel; the flowmeter is arranged on a tap water adding pipeline of the medicament blending barrel; the first PLC variable frequency controller is respectively connected with the flowmeter and the spiral feeding machine and controls the medicament conveying capacity of the spiral feeding machine according to the addition amount of tap water; the pH online detector is arranged in the last reaction barrel before the wastewater leaves the reaction module, the dosing pump is used for adding the liquid medicine prepared in the medicine preparation barrel into the reaction barrel, the second PLC frequency-variable controller is respectively connected with the pH online detector and the dosing pump, and the liquid medicine adding amount of the dosing pump is controlled according to the pH value detected by the pH online detector;
the mud-water separation module (3) comprises an integrated high-density loading precipitation device (31); the sludge dewatering module (4) comprises an integrated sludge dewatering device (41); the water inlet of the mud-water separation module (3) is connected with the water outlet of the reaction module (1), and the sludge outlet of the mud-water separation module (3) is connected with the sludge inlet of the sludge dewatering module (4).
2. The mine acidic wastewater treatment system of claim 1, characterized in that the integrated high-density loading and settling device (31) is of a container structure; the integrated sludge dewatering equipment (41) is of a container structure.
3. The mine acidic wastewater treatment system of claim 1, characterized in that the integrated sludge dewatering device (41) comprises a dewatering machine and a sludge storage tank.
4. The mine acidic wastewater treatment system of claim 3, wherein the dewatering machine is a stack screw dewatering machine or a belt press filtration dewatering machine.
5. The mine acidic wastewater treatment system according to claim 1, wherein the reaction barrel (11) is a PE reaction barrel; a stirring device is arranged in the reaction barrel (11), and an emptying valve is arranged at the bottom of the side wall of the reaction barrel.
6. The mine acidic wastewater treatment system according to claim 1, characterized in that a circulation pipeline is further arranged between the sludge dewatering module (4) and the reaction module (1) for guiding filtrate generated by sludge dewatering back to the water inlet of the reaction module (1).
7. The mine acidic wastewater treatment system according to claim 1, wherein the water inlet of the first reaction barrel into which wastewater enters after entering the reaction module (1) is arranged at one side position of the upper part or the top of the barrel wall, and the water outlet is arranged at the lower part of the barrel wall opposite to the water inlet; the water outlet of the last reaction barrel before the wastewater leaves the reaction module is arranged at the upper part of the barrel wall, and the water inlet is arranged at the lower part of the barrel wall opposite to the water outlet.
8. The mine acidic wastewater treatment system according to claim 7, wherein the number of the reaction barrels (11) is even, every two reaction barrels are in one group, the water inlet of the first reaction barrel in each group is arranged at one side position of the upper part of the barrel wall or the top of the barrel, and the water outlet is arranged at the lower part of the barrel wall opposite to the water inlet; the water outlet of the second reaction barrel in each group is arranged at the upper part of the barrel wall, and the water inlet is arranged at the lower part of the barrel wall opposite to the water outlet.
9. The mine acidic wastewater treatment system according to claim 1, characterized in that the water outlet of the reaction module (1) is at a higher level than the water inlet of the sludge-water separation module (3).
10. The mine acidic wastewater treatment system according to claim 1, wherein the water outlet of the reaction module (1) is 0.5-1 m higher than the water inlet of the mud-water separation module (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123187409.3U CN216337045U (en) | 2021-12-17 | 2021-12-17 | Acid effluent disposal system in mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123187409.3U CN216337045U (en) | 2021-12-17 | 2021-12-17 | Acid effluent disposal system in mine |
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| Publication Number | Publication Date |
|---|---|
| CN216337045U true CN216337045U (en) | 2022-04-19 |
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| CN202123187409.3U Active CN216337045U (en) | 2021-12-17 | 2021-12-17 | Acid effluent disposal system in mine |
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| CN (1) | CN216337045U (en) |
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- 2021-12-17 CN CN202123187409.3U patent/CN216337045U/en active Active
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