CN111228866A - Online self-cleaning medium filtering device - Google Patents
Online self-cleaning medium filtering device Download PDFInfo
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- CN111228866A CN111228866A CN201811430162.3A CN201811430162A CN111228866A CN 111228866 A CN111228866 A CN 111228866A CN 201811430162 A CN201811430162 A CN 201811430162A CN 111228866 A CN111228866 A CN 111228866A
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- filtering
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- inner cylinder
- water inlet
- collecting chamber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
- B01D24/10—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
- B01D24/18—Combined upward and downward filtration
- B01D24/183—Combined upward and downward filtration the filtering material being supported by pervious surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/002—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with multiple filtering elements in parallel connection
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/007—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with multiple filtering elements in series connection
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/46—Regenerating the filtering material in the filter
- B01D24/4631—Counter-current flushing, e.g. by air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/46—Regenerating the filtering material in the filter
- B01D24/4631—Counter-current flushing, e.g. by air
- B01D24/4642—Counter-current flushing, e.g. by air with valves, e.g. rotating valves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/04—Combinations of filters with settling tanks
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention relates to an online self-cleaning medium filtering device which comprises a water inlet pipe, a backwashing one-way valve, a water inlet one-way valve, a shell filtering material, an inner cylinder filtering material, a lower screen plate, a water distributor, a control valve, a backwashing water collecting chamber, a water outlet water collecting chamber, a backwashing pump, a water outlet pipe, a blow-off pipe, an upper screen plate and an electric control system. The method is characterized in that: the shell is internally provided with a plurality of filtering spaces which work independently, each filtering space can work independently or simultaneously according to needs, when a single filtering space needs self-cleaning, a backwashing pump is started to extract filtering liquid to backwash filter materials in the filtering space, backwashing water generated by backwashing is distributed to other filtering spaces for filtering, and suspended matters are intercepted at the lower part of the inner cylinder body and need to be discharged periodically. All filtering spaces can be self-cleaned through automatic control, so that the media filtering device can be self-cleaned on line, and no cleaning wastewater is discharged. The invention can be used for updating the existing medium filter, can improve the use efficiency of the medium filter, saves a large amount of backwashing wastewater and reduces the investment.
Description
Technical Field
The invention belongs to the field of water treatment, relates to an online self-cleaning medium filtering device, is widely applied to devices for removing suspended matters in wastewater treatment, water purification and liquid treatment, can solve the problems that the conventional medium filter needs to be stopped for cleaning and generates a large amount of cleaning wastewater, and can ensure the operation of the medium filter with long period and high efficiency.
Background
The medium filter is widely used in the industries of water treatment, chemical engineering, energy and the like. However, as the service life of the filter increases, the filter inevitably has dirt blocking and adhesion phenomena, the filtering efficiency and the effluent quality of the filter are reduced due to dirt blocking and adhesion inside and on the surface of the medium, the resistance is increased, the normal operation of the filter is affected, the filter needs to be frequently stopped for cleaning, a large amount of cleaning wastewater is generated during cleaning and needs to be treated, and therefore, the investment of wastewater treatment equipment and the treatment cost are increased. The on-line self-cleaning filtering device without sewage and wastewater discharge is developed, the treatment effect of the filtering device can be improved, the operation time of the device is effectively prolonged, the generation of wastewater is reduced, water resources are saved, the equipment investment and the operation cost of wastewater are avoided, and great economic benefits are achieved.
Disclosure of Invention
The invention aims to solve the technical problems that in the prior art, a medium filter is adhered and blocked due to dirt, the efficiency is reduced after long-term use, the machine is frequently stopped for cleaning and sewage and waste water are generated; provided is an on-line self-cleaning medium filter device which has an on-line self-cleaning function, does not need to be stopped and does not generate cleaning waste water during cleaning, and can maintain the effect of the filter device unchanged for a long period.
The technical scheme of the invention for realizing the aim is realized as follows:
the invention relates to an online self-cleaning medium filtering device which comprises a water inlet pipe 1, a back-washing one-way valve 2, a water inlet one-way valve 3, a shell 4, a shell filtering material 5, an inner cylinder 6, an inner cylinder filtering material 7, a lower screen plate 8, a water distributor 9, a control valve 10, a back-washing water collecting chamber 11, a water outlet water collecting chamber 12, a back-washing pump 13, a water outlet pipe 14, a sewage discharge pipe 15, an upper screen plate 16 and an electric control system. The method is characterized in that: the inner cylinder 6 is arranged at the axial position of the shell 4, more than 2 filtering spaces are separated between the inner cylinder 6 and the shell 4, the lower part of each filtering space is provided with a water distributor 9, the interior of the filtering space is provided with shell filtering materials 5, the upper part of the filtering space is provided with a water inlet and a water outlet, the water inlet and the water outlet are respectively connected with a water inlet check valve 3 and a backwashing check valve 2, the backwashing check valve 2 is connected with a water inlet pipe 1, and the water inlet check valve 3 is connected with the inner cylinder 6; the water inlet pipe 1 is arranged at the center of the inner barrel 6, penetrates through the upper screen plate 16, the inner barrel filter material 7 and the lower screen plate 8 from top to bottom, the water inlet is arranged at the upper end, and the water outlet is arranged at the lateral surface of the lower end; the upper part of the inner cylinder 6 is provided with an inner cylinder filter material 7, the lower part is provided with a cavity for storing suspended matters, and the bottom is provided with a sewage discharge pipe 16; the water distributor 9 at the lower part of each filtering space is connected with a control valve 10, the control valve 10 can be two straight-through valves or a three-way valve, one joint of the control valve 10 is connected with a backwashing water collecting chamber 11, and the other joint is connected with a water outlet collecting chamber 12; the water outlet pipe 14 is connected with the water outlet collecting chamber 12; the water inlet of the back washing pump 13 is connected with the water inlet collecting chamber 12, and the water outlet of the back washing pump 13 is connected with the back washing collecting chamber 11.
The on-line self-cleaning medium filtering device is characterized in that the inner cylinder 6 is arranged at the axial line position of the shell 4, more than 2 filtering spaces are arranged between the shell 4 and the inner cylinder 6, the bottom of each filtering space is provided with a water distributor 9, a shell filtering material 5 and an inlet-outlet joint at the upper part, and each group of water distributors 9 are connected by a control valve 10.
The inner cylinder 6 of the online self-cleaning medium filtering device is divided into three parts by an upper screen plate 16 and a lower screen plate 8: an area is arranged above the upper screen plate 16, an area is arranged between the upper screen plate 16 and the lower screen plate 8, the area is filled with the inner cylinder filter material 7, an area is arranged below the lower screen plate 6, and the area is a water inlet first-stage solid-liquid separation and suspended matter storage chamber.
The upper water inlet and outlet joints of a plurality of filtering spaces of the online self-cleaning medium filtering device are respectively connected with the inner cylinder body 6 and the water inlet pipe 1, valves are controlled on connecting pipelines, and the operation of the valves can be electric, pneumatic, hydraulic and manual control; the one-way valve is divided into a water inlet one-way valve 3 and a back flush one-way valve 2, the liquid flow direction of the water inlet one-way valve 3 flows from the inner cylinder 6 to the filtering space, and the liquid flow direction of the back flush one-way valve 2 flows from the filtering space to the water inlet pipe 1.
The joint of the water distributor 9 of the online self-cleaning medium filtering device is connected with a control valve 10, the valve can be two straight-through valves or a three-way valve, the valve can be electrically, pneumatically, hydraulically and manually operated, and electric and pneumatic control is preferentially adopted here.
The shell filter material 5 and the inner cylinder filter material 7 of the online self-cleaning medium filter device are made of various materials, and can be: quartz sand, pumice, zeolite, manganese sand, anthracite, ceramic particles, activated carbon, metal particles, walnut particles, plastic particles, fiber balls, fiber bundles, glass particles, active filter materials and other fillers, wherein the shell filter material 5 preferably adopts the active filter material, and the inner cylinder filter material 7 preferably adopts pumice.
The on-line self-cleaning medium filtering device is characterized in that joints of a plurality of groups of water distributors 9 are respectively connected with a water outlet collecting chamber 11 and a back flush collecting chamber 12 through control valves 10, and the water outlet collecting chamber 11 and the back flush collecting chamber 12 can be respectively processed by bending square pipes and round pipes or by processing plates.
The invention has the beneficial effects that: can ensure that the medium filtering device realizes the on-line non-stop self-cleaning and does not generate sewage and wastewater during cleaning, and can continuously run for a long time and high efficiently.
Drawings
As shown in the figure, the general structure of the on-line self-cleaning medium filtering device is schematically illustrated,
as shown in the figure: the device comprises a water inlet pipe 1, a backwashing one-way valve 2, a water inlet one-way valve 3, a shell 4, a shell filter material 5, an inner cylinder 6, an inner cylinder filter material 7, a lower screen plate 8, a water distributor 9, a control valve 10, a backwashing water collecting chamber 11, a water outlet water collecting chamber 12, a backwashing pump 13, a water outlet pipe 14, a sewage discharge pipe 15 and an upper screen plate 16.
Liquid to be treated enters from the upper end of the water inlet pipe 1, enters the lower part of the inner barrel 6 through the lateral hole at the lower end of the water inlet pipe 1, then passes through the lower screen plate 8, the inner barrel filter material 7, the upper screen plate 16 and the water inlet one-way valve 3 upwards to enter a plurality of filter spaces of the medium filter device, then passes through the shell filter material 5, the water distributor 9 and the control valve 10 of each filter space to reach the water outlet collecting chamber 12 to be converged, and then flows out from the water outlet pipe 14. In the process, due to the change of the flowing direction of the liquid in the inner cylinder 6, the larger part of particles in the liquid can be separated out from the middle of the inner cylinder 6 and precipitated to the lower area of the inner cylinder 6, when the liquid flows upwards through the inner cylinder filter material 7, part of suspended matters in the liquid are intercepted and adsorbed by the inner cylinder filter material 7 to be further filtered and purified, after the liquid in the inner cylinder 6 is purified twice, the liquid then enters each filtering space, and the liquid is purified again through the interception and adsorption of the shell filter materials 5 in each filtering space, and as the suspended matters in the liquid are filtered and removed for multiple times, the filtering effect of the medium filter is ensured. After equipment operation a period, casing filter material 5 can intercept and adsorb many pollutants, leads to the fluid resistance to increase, needs to wash casing filter material 5 this moment, washs and adopts the filtrate to carry out the back flush, and the mode of its realization is as follows: starting the back washing pump 13, and opening the control valve 10 corresponding to the filter space needing cleaning: if the control valve 10 is a straight-through valve, the control valve connected with the water outlet collecting chamber 11 is closed, and simultaneously, the control valve connected with the backwashing collecting chamber 12 is opened; if the control valve 10 is a three-way valve, it is sufficient to open the three-way valve. At this time, the filtered liquid passes through the back flush pump 13, the back flush collecting chamber 12, the control valve 10, the water distributor 9, the shell filter material 5, the back flush check valve 2, the water inlet pipe 1, the inner cylinder 6, the inner cylinder filter material 7 and finally the water inlet check valve 3 passing through a plurality of non-cleaning filtering spaces in turn from the water outlet collecting chamber 11 to enter other filtering spaces for filtering treatment under the action of the back flush pump 13, so that the filtering treatment of the back flush water is completed. By adopting the mode, automatic backwashing can be sequentially carried out on other filtering spaces through automatic control, and when one space is backwashed, the other spaces still continue to work; the suspended matter trapped is stored in the lower part of the inner cylinder and needs to be periodically discharged through the sewage discharge pipe 15.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Referring to the attached drawings, an online self-cleaning medium filtering device is of a 5-space structure.
As shown in the figure, the on-line self-cleaning medium filtering device comprises a water inlet pipe 1, a backwashing one-way valve 2, a water inlet one-way valve 3, a shell 4, a shell filtering material 5, an inner cylinder 6, an inner cylinder filtering material 7, a lower screen plate 8, a water distributor 9, a control valve 10, a backwashing water collecting chamber 11, a water outlet water collecting chamber 12, a backwashing pump 13, a water outlet pipe 14, a sewage discharge pipe 15 and an upper screen plate 16.
The working process of the on-line self-cleaning medium filtering device comprises the following steps
And (3) filtering process: liquid enters from the upper end of the water inlet pipe 1, enters the lower part of the inner cylinder 6 through the lateral hole at the lower end of the water inlet pipe 1, then enters 5 filtering spaces of the medium filtering device through the lower screen 8, the inner cylinder filtering material 7, the upper screen 16 and the water inlet one-way valve 3 in sequence, then reaches the water outlet collecting chamber 12 through the shell filtering material 5, the water distributor 9 and the control valve 10 in each filtering space, is converged, and flows out from the water outlet pipe 14, and thus the liquid filtering is completed. In the process, due to the change of the flowing direction of the liquid in the inner cylinder 6, a part of larger particles in the liquid can be separated out from the lower part of the inner cylinder 6 and deposited to the lower area of the inner cylinder; when the liquid flows upwards through the inner cylinder filtering material 7, part of suspended matters in the liquid are intercepted and adsorbed by the inner cylinder filtering material 7 to obtain further filtering and purification; the liquid in the inner cylinder 6 is purified twice; the liquid then passes through the interception and adsorption of the shell filter material 5 in each filtering space, and the liquid is purified again; the suspended matter in the liquid is removed many times, wherein the filtration in the inner cylinder 6 is coarse filtration mainly used for removing large suspended matter particles, and the filtration of the shell filter material 5 is fine filtration mainly used for removing fine suspended matter.
A self-cleaning process: after equipment operation a certain time, casing filter material 5 can intercept and adsorb many pollutants, leads to the resistance to increase, needs rinse casing filter material 5 this moment, washs and adopts the filtrate to carry out the back flush, and the mode of its realization is as follows: starting the back washing pump 13, and opening the control valve 10 corresponding to the space needing to be cleaned: if the control valve 10 is a straight-through valve, the control valve connected with the water outlet collecting chamber 11 is closed, and simultaneously, the control valve connected with the backwashing collecting chamber 12 is opened; if the control valve 10 is a three-way valve, it is sufficient to open the three-way valve. At this time, the filtered liquid passes through the back flush pump 13, the back flush collecting chamber 12, the control valve 10, the water distributor 9, the shell filter material 5, the back flush check valve 2, the water inlet pipe 1, the inner cylinder 6, the inner cylinder filter material 7 and finally the water inlet check valves 3 passing through other non-cleaning spaces in sequence from the water outlet collecting chamber 11 to enter other spaces for filtering treatment under the action of the back flush pump 13, so that the filtering treatment of the back flush water generated in the space needing to be cleaned is completed. By adopting the mode, automatic backwashing can be sequentially carried out on other filtering spaces through automatic control; when one filtering material space is subjected to backwashing, other spaces still continue to work; thus, online self-cleaning of the medium filtering device is realized, and no cleaning wastewater is discharged. And (3) sewage discharge flow: during the operation of the filter device, the intercepted suspended matters are stored at the lower part of the inner cylinder body 6 and need to be discharged through the sewage discharge pipe 15 periodically. The sewage discharge can be performed during the operation of the filtering device or during the shutdown, the color of the sewage discharge slurry is observed after the sewage discharge valve is opened during the sewage discharge, and the sewage discharge valve is closed when the color becomes light; the control of the sewage discharge valve can adopt manual, electric and pneumatic control.
Claims (8)
1. The invention relates to an online self-cleaning medium filtering device which comprises a water inlet pipe 1, a back-washing one-way valve 2, a water inlet one-way valve 3, a shell 4, a shell filtering material 5, an inner cylinder 6, an inner cylinder filtering material 7, a lower screen plate 8, a water distributor 9, a control valve 10, a back-washing water collecting chamber 11, a water outlet water collecting chamber 12, a back-washing pump 13, a water outlet pipe 14, a sewage discharge pipe 15, an upper screen plate 16 and an electric control system. The method is characterized in that: the inner cylinder 6 is arranged at the axial position of the shell 4, more than 2 filtering spaces are separated between the inner cylinder 6 and the shell 4, the lower part of each filtering space is provided with a water distributor 9, the interior of the filtering space is provided with shell filtering materials 5, the upper part of the filtering space is provided with a water inlet and a water outlet, the water inlet and the water outlet are respectively connected with a water inlet check valve 3 and a backwashing check valve 2, the backwashing check valve 2 is connected with a water inlet pipe 1, and the water inlet check valve 3 is connected with the inner cylinder 6; the water inlet pipe 1 is arranged at the center of the inner barrel 6, penetrates through the upper screen plate 16, the inner barrel filter material 7 and the lower screen plate 8 from top to bottom, the water inlet is arranged at the upper end, and the water outlet is arranged at the lateral surface of the lower end; the upper part of the inner cylinder 6 is provided with an inner cylinder filter material 7, the lower part is provided with a cavity for storing suspended matters, and the bottom is provided with a sewage discharge pipe 16; the water distributor 9 at the lower part of each filtering space is connected with a control valve 10, the control valve 10 can be two straight-through valves or a three-way valve, one joint of the control valve 10 is connected with a backwashing water collecting chamber 11, and the other joint is connected with a water outlet collecting chamber 12; the water outlet pipe 14 is connected with the water outlet collecting chamber 12; the water inlet of the back washing pump 13 is connected with the water inlet collecting chamber 12, and the water outlet of the back washing pump 13 is connected with the back washing collecting chamber 11.
2. The on-line self-cleaning medium filtering device is characterized in that the inner cylinder 6 is arranged at the axial line position of the shell 4, more than 2 filtering spaces are arranged between the shell 4 and the inner cylinder 6, the bottom of each filtering space is provided with a water distributor 9, a shell filtering material 5 and an inlet-outlet joint at the upper part, and each group of water distributors 9 are connected by a control valve 10.
3. The inner cylinder 6 of the online self-cleaning medium filtering device is divided into three parts by an upper screen plate 16 and a lower screen plate 8: an area is arranged above the upper screen plate 16, an area is arranged between the upper screen plate 16 and the lower screen plate 8, the area is filled with the inner cylinder filter material 7, an area is arranged below the lower screen plate 6, and the area is a water inlet first-stage solid-liquid separation and suspended matter storage chamber.
4. The upper water inlet and outlet joints of a plurality of filtering spaces of the online self-cleaning medium filtering device are respectively connected with the inner cylinder body 6 and the water inlet pipe 1, valves are controlled on connecting pipelines, and the operation of the valves can be electric, pneumatic, hydraulic and manual control; the one-way valve is divided into a water inlet one-way valve 3 and a back flush one-way valve 2, the liquid flow direction of the water inlet one-way valve 3 flows from the inner cylinder 6 to the filtering space, and the liquid flow direction of the back flush one-way valve 2 flows from the filtering space to the water inlet pipe 1.
5. The joint of the water distributor 9 of the online self-cleaning medium filtering device is connected with a control valve 10, the valve can be two straight-through valves or a three-way valve, the valve can be electrically, pneumatically, hydraulically and manually operated, and electric and pneumatic control is preferentially adopted here.
6. The shell filter material 5 and the inner cylinder filter material 7 of the online self-cleaning medium filter device are made of various materials, and can be: quartz sand, pumice, zeolite, manganese sand, anthracite, ceramic particles, activated carbon, metal particles, walnut particles, plastic particles, fiber balls, fiber bundles, glass particles, active filter materials and other fillers, wherein the shell filter material 5 preferably adopts the active filter material, and the inner cylinder filter material 7 preferably adopts pumice.
7. The on-line self-cleaning medium filtering device is characterized in that joints of a plurality of groups of water distributors 9 are respectively connected with a water outlet collecting chamber 11 and a back flush collecting chamber 12 through control valves 10, and the water outlet collecting chamber 11 and the back flush collecting chamber 12 can be respectively processed by bending square pipes and round pipes or by processing plates.
8. The invention has the beneficial effects that: can ensure that the medium filtering device realizes on-line self-cleaning and does not generate sewage and wastewater during cleaning, and can continuously operate for a long time and efficiently.
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| CN201811430162.3A CN111228866B (en) | 2018-11-28 | 2018-11-28 | Online self-cleaning medium filtering device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811430162.3A CN111228866B (en) | 2018-11-28 | 2018-11-28 | Online self-cleaning medium filtering device |
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| CN111228866A true CN111228866A (en) | 2020-06-05 |
| CN111228866B CN111228866B (en) | 2021-10-22 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106698556A (en) * | 2017-02-27 | 2017-05-24 | 山东南郊敢当环保工程有限公司 | Online switch backflushing water treatment device |
| CN113274780A (en) * | 2021-06-28 | 2021-08-20 | 江苏南大环保科技有限公司 | Continuous filtration adsorption process and device |
| CN114588670A (en) * | 2022-02-07 | 2022-06-07 | 常州机电职业技术学院 | Filter and filtering method |
| CN115228157A (en) * | 2021-04-22 | 2022-10-25 | 北京奥博水处理有限责任公司 | Double-bed suspension medium filtering device |
| CN115228156A (en) * | 2021-04-22 | 2022-10-25 | 北京奥博水处理有限责任公司 | Double-bed medium filtering device |
| CN115594369A (en) * | 2022-12-16 | 2023-01-13 | 湖南艾布鲁环保科技股份有限公司（Cn） | Deep purification and reuse system for mine water burst pollution and implementation method |
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