CN220926384U - Direct filtration device for high-turbidity mine water treatment - Google Patents
Direct filtration device for high-turbidity mine water treatment Download PDFInfo
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- CN220926384U CN220926384U CN202322529664.4U CN202322529664U CN220926384U CN 220926384 U CN220926384 U CN 220926384U CN 202322529664 U CN202322529664 U CN 202322529664U CN 220926384 U CN220926384 U CN 220926384U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 190
- 238000001914 filtration Methods 0.000 title claims abstract description 56
- 239000012528 membrane Substances 0.000 claims description 26
- 239000010802 sludge Substances 0.000 claims description 9
- 238000005273 aeration Methods 0.000 claims description 8
- 238000004062 sedimentation Methods 0.000 abstract description 7
- 230000001112 coagulating effect Effects 0.000 abstract description 6
- 238000005406 washing Methods 0.000 description 14
- 239000008213 purified water Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 239000002033 PVDF binder Substances 0.000 description 9
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 9
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 8
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 8
- 230000009471 action Effects 0.000 description 5
- 238000011001 backwashing Methods 0.000 description 5
- 239000006184 cosolvent Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 238000000108 ultra-filtration Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052901 montmorillonite Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 2
- -1 suspended matters Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model discloses a direct filtration device for treating high-turbidity mine water, which comprises: a tank body; the axis of the water inlet pipe is parallel to the tangent line of the side wall of the tank body, one end of the water inlet pipe obliquely upwards penetrates through the side wall of the tank body, and the other end of the water inlet pipe is connected with a high-pressure water pump and is used for enabling high-turbidity mine water entering the tank body to spirally rise along the inner side wall of the tank body; the filter assembly is fixedly arranged in the tank body and comprises a central tube and a plurality of filter parts; the central tube is arranged along the vertical direction of the tank body, and the bottom end of the central tube is sealed; the filtering parts are circumferentially distributed along the central tube and are communicated with the central tube through the water collecting parts; the top end of the central tube is provided with a water outlet pipe through the side wall of the tank body. The direct filtration device does not need to be provided with a coagulating sedimentation tank, and improves the efficiency of treating high-turbidity mine water.
Description
Technical Field
The utility model relates to the technical field of high-turbidity mine water treatment, in particular to a direct filtration device for high-turbidity mine water treatment.
Background
Coal mining is an underground production activity that inevitably results in localized damage and contamination to the subsurface water system. The suspended matter content in mine water is high, and the mine water has small granularity, light specific gravity, slow sedimentation speed and poor coagulation effect, and also contains organic pollutants such as waste engine oil, emulsified oil and the like. The mine water treatment process generally adopts coagulation, precipitation and filtration, and for some water bodies with special requirements, advanced treatment processes such as ultrafiltration and reverse osmosis are also required. For high-turbidity mine water, if the traditional ultrafiltration treatment process is adopted, the ultrafiltration front end needs to be provided with a coagulating sedimentation and filtration process, the process flow is long, the treatment efficiency is low, meanwhile, the coagulating sedimentation tank and the like occupy large area, the construction period is long, and the investment and the operation cost are high.
Disclosure of utility model
In view of the above-described drawbacks or shortcomings of the prior art, it is desirable to provide a direct filtration device that does not require a coagulating sedimentation tank and efficiently processes high turbidity mine water.
The utility model provides a direct filtration device for treating high-turbidity mine water, which comprises:
A tank body;
The axis of the water inlet pipe is parallel to the tangent line of the side wall of the tank body, one end of the water inlet pipe obliquely upwards passes through the side wall of the tank body, and the other end of the water inlet pipe is connected with a high-pressure water pump and is used for enabling high-turbidity mine water entering the tank body to spirally rise along the side wall of the tank body;
Wherein the water pressure range of the high-turbidity mine water flowing into the tank body (1) is 0.1Mpa-0.2Mpa;
the filter assembly is fixedly arranged in the tank body and comprises a central tube and a plurality of filter parts;
The central tube is arranged along the vertical direction of the tank body, and the bottom end of the central tube is sealed;
the filtering parts are circumferentially distributed along the central pipe and are communicated with the central pipe through the water collecting part;
And a water outlet pipe is arranged at the top end of the central pipe through the side wall of the tank body.
Optionally, the water collecting part comprises a first water collecting pipe and a second water collecting pipe which are circumferentially arranged along the central pipe; an extension line of the axis of the first water collecting pipe is intersected with the axis of the central line, and a second water collecting pipe is arranged below the extension line in parallel;
One end of the first water collecting pipe is communicated with the central pipe through the side wall of the central pipe, and one end of the second water collecting pipe is communicated with the central pipe through the side wall of the central pipe.
The filtering part is arranged between the first water collecting pipe and the second water collecting pipe.
Optionally, the filtering portion includes a membrane wire, and the membrane wire is disposed between the first water collecting pipe and the second water collecting pipe, and is communicated with the first water collecting pipe and the second water collecting pipe.
Further, the membrane yarn comprises an inner membrane and an outer membrane, wherein the inner membrane is prepared by mixing ultra-high molecular weight polyethylene, polyvinylidene fluoride, sodium montmorillonite and a fluxing agent according to a proportion;
Wherein the inner film comprises 10-15 parts of ultra-high molecular weight polyethylene, 50-60 parts of polyvinylidene fluoride, 5-15 parts of sodium montmorillonite powder and 10-35 parts of cosolvent;
The outer layer film is prepared by mixing ultra-high molecular weight polyethylene, polyvinylidene fluoride, tiO2 and fluxing agent according to a proportion;
Wherein the outer film comprises 10-15 parts of ultra-high molecular weight polyethylene, 50-60 parts of polyvinylidene fluoride, 25-15 parts of TiO and 10-35 parts of cosolvent.
Optionally, the device further comprises an air inlet pipe and an annular aeration pipe arranged below the bottom end of the central pipe, wherein the aeration pipe is horizontally arranged and is communicated with the air inlet pipe;
One end of the air inlet pipe is connected with an air pump.
Optionally, the device also comprises a conical hopper arranged at the bottom end of the tank body and used for collecting the sludge and water filtered by the filtering component;
The bottom end of the conical hopper is provided with a mud discharging opening.
Further, the taper of the conical hopper is 50-70 degrees.
Optionally, a hemispherical end cover is arranged at the top end of the tank body, and a water outlet is arranged on the side wall of the end cover.
Compared with the prior art, the utility model has the beneficial effects that:
The utility model relates to a direct filtration device for treating high-turbidity mine water, which comprises: the device comprises a tank body, a water inlet pipe, a central pipe, a filtering part and a water outlet pipe; the high-turbidity mine water contains a plurality of suspended matters, the suspended matters enter the regulating tank for buffering, after being pressurized by the high-pressure water pump, the water inlet pressure is 0.1-0.2 MPa, the high-turbidity mine water enters the tank body through the water inlet pipe, and in the process, the pressurized high-turbidity mine water flows to the tangential direction obliquely upwards along the side wall of the tank body when entering the tank body through the water inlet pipe. Because the water inlet pressure is high, the water flow speed is high, the water body forms rotational flow in the tank body, and under the action of centrifugal force, large particles in the high-turbidity mine water slide down to the bottom of the tank body along the inner wall of the tank body.
The high-turbidity mine water spirally rises in the tank body and passes through the filter assembly, and because the high-turbidity mine water entering the tank body is pressurized by the high-pressure water pump, under the action of pressure, the high-turbidity mine water containing suspended matters enters the filter part from the outer surface of the filter part, the suspended matters are intercepted on the outer surface of the filter part, purified water enters the filter part, and enters the central cylinder after being collected by the water collecting part, and because the bottom end of the central cylinder is sealed, the purified water flows out through the water outlet pipe after the central cylinder is filled with the purified water. The direct filtration device does not need to be provided with a coagulating sedimentation tank, and improves the efficiency of treating high-turbidity mine water.
It should be understood that the description in this summary is not intended to limit the critical or essential features of the embodiments of the utility model, nor is it intended to limit the scope of the utility model. Other features of the present utility model will become apparent from the description that follows.
Drawings
Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of the overall structure of a direct filtration device;
FIG. 2 is a schematic view of a direct filtration device in partial cross-section;
FIG. 3 is a schematic view of a filter assembly;
fig. 4 is a schematic structural view of a portion of the direct filtration device.
Reference numerals in the drawings: 1. a tank body; 2. a water inlet pipe; 3. a filter assembly; 4. a water outlet pipe; 5. an air inlet pipe; 6. an aeration pipe; 7. a conical hopper; 8. an end cap;
31. A central tube; 32. a filtering part; 33. a water collecting part;
321. Membrane filaments;
331. a first water collecting pipe; 332. a second water collecting pipe;
71. a mud discharging port; 81. and a water outlet.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be noted that, for convenience of description, only the portions related to the utility model are shown in the drawings.
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 2, an embodiment of the present utility model provides a direct filtration device for treating high-turbidity mine water, including:
a tank 1;
The axis of the water inlet pipe 2 is parallel to the tangent line of the side wall of the tank body 1, one end of the water inlet pipe obliquely upwards passes through the side wall of the tank body 1, and the other end of the water inlet pipe is connected with a high-pressure water pump and is used for leading high-turbidity mine water entering the tank body 1 to spirally rise along the inner side wall of the tank body 1;
The filter assembly 3 is fixedly arranged in the tank body 1 and comprises a central pipe 31 and a plurality of filter parts 32;
The central tube 31 is arranged along the vertical direction of the tank body 1, and the top end is open and the bottom end is sealed;
The filtering parts 32 are circumferentially distributed along the central tube 31, and are communicated with the central tube 31 through the water collecting part 33;
the top end of the central tube 31 is provided with a water outlet pipe 4 through the side wall of the tank body 1.
Wherein, the central tube 31 is welded or riveted with the side wall of the tank body 1 through a fixing frame.
In this embodiment, the high-turbidity mine water contains a certain amount of suspended matters, the suspended matters enter the regulating tank for buffering, after being pressurized by the high-pressure water pump, the water inlet pressure is 0.1-0.2 MPa, the high-turbidity mine water enters the tank body 1 through the water inlet pipe 2, and in the process, the pressurized high-turbidity mine water flows to the tangential direction obliquely upwards along the side wall of the tank body 1 when entering the tank body 1 through the water inlet pipe 2. Because the water inlet pressure is high, the water flow speed is high, the water body forms rotational flow in the tank body 1, and under the action of centrifugal force, large particles in the high-turbidity mine water slide down to the bottom of the tank body 1 along the inner wall of the tank body 1.
The high-turbidity mine water spirally rises in the tank body 1 and passes through the filter assembly 3, and because the high-turbidity mine water entering the tank body 1 is pressurized by the high-pressure water pump, under the action of pressure, the high-turbidity mine water containing suspended matters enters the filter part 32 from the outer surface of the filter part 32, the suspended matters are intercepted on the outer surface of the filter part 32, purified water enters the filter part 32, is collected by the water collecting part 33 and enters the central cylinder, and because the bottom end of the central cylinder is sealed, the purified water flows out through the water outlet pipe 4 after the central cylinder is filled with the purified water. The direct filtration device does not need to be provided with a coagulating sedimentation tank, and has high efficiency of treating high-turbidity mine water.
As shown in fig. 3, as an alternative embodiment, the water collecting part 33 includes a first water collecting pipe 331 and a second water collecting pipe 332 disposed along the circumference of the center pipe 31; an extension line of the axis of the first water collecting pipe 331 is intersected with the axis of the central pipe, and a second water collecting pipe 332 is arranged below the extension line in parallel;
Wherein, one end of the first water collecting pipe 331 is communicated with the central pipe 31 through the side wall of the central pipe 31, and one end of the second water collecting pipe 332 is communicated with the central pipe 31 through the side wall of the central pipe 31.
A filter portion 32 is provided between the first water collecting pipe 331 and the second water collecting pipe 332.
In this embodiment, the first water collecting pipes 331 are distributed in a fan shape along the circumference of the central pipe 31, one end of each first water collecting pipe 331 passes through the side wall of the central pipe 31 to be communicated with the central pipe 31, meanwhile, the second water collecting pipe 332 is located below the first water collecting pipe 331 and is parallel to the first water collecting pipe 331, the filtering part 32 is arranged between the first water collecting pipe 331 and the second water collecting pipe 332, and the first water collecting pipe 331, the second water collecting pipe 332 and the filtering part 32 are mutually communicated.
When filtering high-turbidity mine water, the pressurized high-turbidity mine water containing suspended matters enters the filtering part 32 from the outer surface of the filtering part 32, the suspended matters are intercepted on the outer surface of the filtering part 32, the purified water enters the filtering part 32, then flows into the first water collecting pipe 331 and the second water collecting pipe 332 respectively, and finally is converged to the central pipe 31 to flow out to obtain purified water.
As an alternative embodiment, the filtering part 32 includes a membrane wire 321, and the membrane wire 321 is disposed between the first water collecting pipe 331 and the second water collecting pipe 332 and communicates with the first water collecting pipe 331 and the second water collecting pipe 332.
Wherein, the membrane yarn 321 adopts a composite PVDF membrane, the membrane adopts a double-layer membrane design, the inner membrane is prepared by mixing ultra-high molecular weight polyethylene, polyvinylidene fluoride, sodium montmorillonite and the like according to a proportion, the outer membrane is prepared by mixing ultra-high molecular weight polyethylene, polyvinylidene fluoride, tiO2 and the like according to a proportion, wherein, the inner membrane comprises 10-15 parts of ultra-high molecular weight polyethylene, 50-60 parts of polyvinylidene fluoride, 5-15 parts of sodium montmorillonite powder and 10-35 parts of cosolvent; the outer film comprises 10-15 parts of ultra-high molecular weight polyethylene, 50-60 parts of polyvinylidene fluoride, 25-15 parts of TiO and 10-35 parts of cosolvent.
The composite membrane has the characteristics of large flux of the inner membrane and high rigidity and abrasion resistance of the outer membrane, and is particularly suitable for direct filtration of high-turbidity water. The porosity of the membrane is about 85%, the average pore diameter is 0.01-0.2 um, the pure water flux reaches 400L/(m 2. H), and the membrane has the characteristic of high flux.
As shown in fig. 4, as an alternative embodiment, the device further comprises an air inlet pipe 5 and an annular aeration pipe 6 arranged below the bottom end of the central pipe 31, wherein the aeration pipe 6 is horizontally arranged and communicated with the air inlet pipe 5, and one end of the air inlet pipe 5 is connected with an air pump; in addition, a drain outlet is arranged at the bottom of the tank body 1.
In this embodiment, after the direct filtration device is operated for a period of time, a backwashing process including both air washing and water washing is required, i.e., large particles, suspended matters, sludge, etc. accumulated on the outer surface of the filtration portion 32 and the bottom of the tank 1 are cleaned.
First, air washing is performed. Before air washing, the high-pressure water pump for water inlet needs to be closed, an air source is provided by an air pump (a blower), air is conveyed into an aeration pipe 6 of the direct filtration device through an air inlet pipe 5, and finally the air is released into water. Wherein the air-washing strength is less than or equal to 0.1m < 3 >/m < 2 >. H, and some suspended matters attached to the outer surface of the filtering part 32 are washed away under the washing action of bubbles. And (5) after the air washing is finished, turning off the air blower.
As shown in fig. 1, as an alternative embodiment, the device further comprises a conical hopper 7 arranged at the bottom end of the tank body 1 and used for collecting the sludge and water filtered by the filtering component 3; the bottom end of the conical hopper 7 is provided with a mud discharge opening 71.
In this embodiment, after the direct filtration device is operated for a period of time, a backwashing process including both air washing and water washing is required, i.e., large particles, suspended matters, sludge, etc. accumulated on the outer surface of the filtration portion 32 and the bottom of the tank 1 are cleaned.
After the air washing is finished, the water washing is started, pressurized purified water enters the water collecting part 33 and the filtering part 32 through the water outlet pipe 4 through the central cylinder, wherein a three-way valve is arranged at the water inlet position, and when the water washing is performed, the water outlet end valve of the water outlet pipe 4 is closed, and the water inlet end valve is opened.
Purified water passes through the filtering part 32 from inside to outside, and suspended matters on the surface of the filtering part 32 due to dirt blocking are washed away under the impact of high-pressure purified water, so that the filtering function of the filtering part 32 is recovered or improved. The water backwashing strength is less than or equal to 0.1m < 3 >/m < 2 > h, and the water inlet pressure is less than 0.2mpa.
After washing, the drain water is discharged from the sludge discharge port 71 of the tapered bucket 7, and the sludge accumulated in the tank 1 and the tapered bucket 7 is discharged through this drain water, so that the sludge water is discharged to the sludge tank.
As shown in fig. 1, as an alternative embodiment, a hemispherical end cap 8 is provided at the top end of the can body 1, and a drain port 81 is provided on the side wall of the end cap 8.
During the backwashing process, the sewage after washing in the tank body 1 can be discharged through the water outlet 81, and the backwashing water discharging efficiency is improved.
In the description of the present specification, the terms "connected," "mounted," "secured," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, the terms "one embodiment," "some embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present application, and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (8)
1. A direct filtration device for high turbidity mine water treatment, comprising:
a tank body (1);
The axis of the water inlet pipe (2) is parallel to the tangent line of the side wall of the tank body (1), one end of the water inlet pipe obliquely upwards penetrates through the side wall of the tank body (1), and the other end of the water inlet pipe is connected with a high-pressure water pump and is used for enabling high-turbidity mine water entering the tank body (1) to rise in a spiral shape along the inner side wall of the tank body (1);
Wherein the water pressure range of the high-turbidity mine water flowing into the tank body (1) is 0.1Mpa-0.2Mpa;
The filter assembly (3) is fixedly arranged in the tank body (1) and comprises a central tube (31) and a plurality of filter parts (32);
The central tube (31) is arranged along the vertical direction of the tank body (1), and the bottom end of the central tube is sealed;
The filtering parts (32) are circumferentially distributed along the central pipe (31) and are communicated with the central pipe (31) through the water collecting part (33);
The side wall of the central tube (31) is connected with the water outlet tube (4) through the side wall of the tank body (1).
2. The direct filtration device for high-turbidity mine water treatment according to claim 1, wherein the water collecting portion (33) includes a first water collecting pipe (331) and a second water collecting pipe (332) provided along a circumferential direction of the center pipe (31); an extension line of the axis of the first water collecting pipe (331) is intersected with the axis of the central pipe, and a second water collecting pipe (332) is arranged below the extension line in parallel;
Wherein one end of the first water collecting pipe (331) is communicated with the central pipe (31) through the side wall of the central pipe (31), and one end of the second water collecting pipe (332) is communicated with the central pipe (31) through the side wall of the central pipe (31);
the filtering part (32) is arranged between the first water collecting pipe (331) and the second water collecting pipe (332).
3. The direct filtration device for high-turbidity mine water treatment according to claim 2, wherein the filtration portion (32) includes a membrane wire (321), and the membrane wire (321) is disposed between the first water collection pipe (331) and the second water collection pipe (332) and is in communication with the first water collection pipe (331) and the second water collection pipe (332).
4. A direct filtration device for treating high turbidity mine water according to claim 3, wherein said membrane filaments comprise an inner membrane and an outer membrane.
5. The direct filtration device for high-turbidity mine water treatment according to claim 1, further comprising an air inlet pipe (5) and an annular aeration pipe (6) arranged below the central pipe (31), wherein the aeration pipe (6) is horizontally arranged and is communicated with one end of the air inlet pipe (5);
The other end of the air inlet pipe (5) is connected with an air pump through the side wall of the tank body (1).
6. The direct filtration device for treating high-turbidity mine water according to claim 1, further comprising a cone-shaped hopper (7) arranged at the bottom end of the tank body (1) for collecting sludge and water filtered by the filter assembly (3);
The bottom end of the conical hopper (7) is provided with a mud outlet (71).
7. The direct filtration device for treating high-turbidity mine water according to claim 6, wherein the taper of the cone hopper (7) is 50-70 degrees.
8. The direct filtration device for treating high-turbidity mine water according to claim 1, wherein a hemispherical end cover (8) is arranged at the top end of the tank body (1), and a water outlet (81) is arranged on the side wall of the end cover (8).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202322529664.4U CN220926384U (en) | 2023-09-18 | 2023-09-18 | Direct filtration device for high-turbidity mine water treatment |
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CN202322529664.4U CN220926384U (en) | 2023-09-18 | 2023-09-18 | Direct filtration device for high-turbidity mine water treatment |
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Publication Number | Publication Date |
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CN220926384U true CN220926384U (en) | 2024-05-10 |
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CN202322529664.4U Active CN220926384U (en) | 2023-09-18 | 2023-09-18 | Direct filtration device for high-turbidity mine water treatment |
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2023
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