CN113060891A - Heavy metal filtering device and using method thereof - Google Patents
Heavy metal filtering device and using method thereof Download PDFInfo
- Publication number
- CN113060891A CN113060891A CN202110337735.3A CN202110337735A CN113060891A CN 113060891 A CN113060891 A CN 113060891A CN 202110337735 A CN202110337735 A CN 202110337735A CN 113060891 A CN113060891 A CN 113060891A
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- China
- Prior art keywords
- filter screen
- heavy metal
- pipeline
- permanent magnet
- water
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Classifications
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
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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
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/481—Treatment of water, waste water, or sewage with magnetic or electric fields using permanent magnets
- C02F1/482—Treatment of water, waste water, or sewage with magnetic or electric fields using permanent magnets located on the outer wall of the treatment device, i.e. not in contact with the liquid to be treated, e.g. detachable
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/005—Valves
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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
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
Abstract
The invention provides a heavy metal filtering device and a using method thereof. The device comprises a container, a filter screen, a permanent magnet and a first pipeline; the filter screen is of a hollow structure and is arranged in the container, and the filter screen is made of soft magnetic materials; the permanent magnet is used for providing a magnetic field, and the filter screen is positioned in the magnetic field; one end opening of the first pipeline is positioned at the inner side of the filter screen, and the other end opening is communicated with the outside. When the water treatment agent is used, firstly, the magnetic nano particles are added into water, so that the magnetic nano particles can adsorb heavy metal ions in the water; then, the filter screen made of soft magnetic materials adsorbs magnetic nano particles under the action of a magnetic field provided by the permanent magnet, so that heavy metal ions are adsorbed. Compared with the prior art, the heavy metal adsorption device has the advantages of simple structure, convenience in operation and high heavy metal adsorption efficiency, and has good market prospect in the technical field of sewage treatment such as heavy metal chemical industry, pharmacy, food, textile, tap water and the like.
Description
Technical Field
The invention belongs to the technical field of heavy metal treatment, and particularly relates to a heavy metal filtering device and a using method thereof.
Background
Water pollution from industrial activities often leads to heavy metal pollution of water systems such as ground water, rivers and lakes. Heavy metals, such as Hg, Cd, Pb, Cr, etc., have toxic effects and can accumulate in the food chain, causing serious ecological and health hazards. Therefore, there is a great need for a practical solution to completely remove such contaminants from water.
At present, the existing heavy metal sewage treatment methods comprise chemical, physical, biological adsorption and the like, but have respective defects in the aspects of treatment effect and economy.
Disclosure of Invention
The invention provides a heavy metal filtering device, which can be used for filtering heavy metals in water.
The technical scheme of the invention is as follows: a heavy metal filtering device comprises a container, a filter screen, a permanent magnet and a first pipeline; the method is characterized in that:
the filter screen is of a hollow structure and is arranged in the container; the filter screen is made of soft magnetic material;
the permanent magnet is used for providing a magnetic field, and the filter screen is positioned in the magnetic field;
an opening at one end of the first pipeline is positioned at the inner side of the filter screen, and an opening at the other end of the first pipeline is communicated with the outside; the first pipeline is provided with a switch valve for controlling the communication of the openings at the two ends of the first pipeline.
The permanent magnet material is not limited and comprises neodymium iron boron, samarium cobalt and other rare earth magnets, aluminum nickel cobalt, ferrite and other magnetic alloys. In order to avoid the reaction between the permanent magnet material and oxygen in the air, it is preferable that the surface of the permanent magnet material is provided with a surface layer, and the surface layer material includes, but is not limited to, gold, copper, chromium, tin, zinc, nickel, epoxy resin, and the like. More preferably, the surface layer has a thickness of 8 to 25 μm.
The shape of the permanent magnet is not limited, and the permanent magnet comprises square, annular, horseshoe-shaped, strip-shaped, round and irregular magnets.
The permanent magnet is not limited in the arrangement position. In one implementation, the permanent magnet is located at the periphery of the container.
The permanent magnet is installed in any way, including fixing by means of fixing grooves, inserting, locking, magnetic connection and the like.
Preferably, the permanent magnet is detachably arranged, and can be installed and detached according to actual needs.
The filter screen is a porous structure through which water can pass.
The soft magnetic material is not limited and includes ferrite soft magnetic material and the like.
Preferably, the container is provided with an inlet and a water outlet, the water flow enters the outer side of the filter screen in the container from the inlet, and under the action of water pressure, the water flow enters the inner side of the filter screen through the filter screen and flows out of the container from the outlet. As a further preference, an inlet valve is provided at the inlet and an outlet valve is provided at the outlet.
Preferably, the filtering device is further provided with a second pipeline, and the second pipeline is communicated with the first pipeline.
The method for filtering heavy metals in water by using the filtering device comprises the following steps:
(1) adding magnetic nanoparticles into water, wherein the magnetic nanoparticles adsorb heavy metal ions in the water;
(2) the water treated in the step (1) flows into the outer side of a filter screen in the container, and under the action of water pressure, the water flows into the inner side of the filter screen through the filter screen; because the filter screen of soft magnetic material can adsorb magnetic nanoparticle under the magnetic field effect that the permanent magnet provided, consequently magnetic nanoparticle is adsorbed by the filter screen when rivers pass through the filter screen to heavy metal ion is adsorbed.
Preferably, the method further comprises the step (3):
(3) opening the ooff valve of first pipeline, there is the pressure differential between container and the external world this moment, utilize the siphon principle, rivers wash behind the filter screen through first pipeline discharge, the magnetic nanoparticle that adsorbs on the filter screen is washed away and is discharged. Preferably, an acidic substance is added into the second pipeline, the acidic substance enters the first pipeline after passing through the second pipeline, and heavy metal ions and the magnetic nanoparticles can be separated under an acidic environment, so that the magnetic nanoparticles can be recycled.
When the permanent magnet is detachable, as a further preferable mode, the method further comprises the step (4):
(4) when the filter screen needs to be cleaned deeply, the permanent magnet is disassembled, and the filter screen is taken out for cleaning.
The invention adopts a container, a permanent magnet, a filter screen made of soft magnetic material and a pipeline to form a filter device, firstly, the magnetic nano particles are used for adsorbing heavy metal ions, then the magnetic nano particles for adsorbing the heavy metal ions pass through the filter screen made of soft magnetic material, and the filter screen can adsorb the magnetic nano particles under the action of a magnetic field provided by the permanent magnet, so that the heavy metal ions are adsorbed. Compared with the prior art, the invention has the following beneficial effects:
(1) the structure is simple, the heavy metal adsorption efficiency is high and can reach more than 99 percent;
(2) when a second pipeline is arranged and acidic substances are introduced into the second pipeline to enable the first pipeline to be in an acidic condition, heavy metal ions and magnetic nanoparticles can be separated, and therefore the magnetic nanoparticles are recycled;
(3) the invention has convenient operation, the permanent magnet can be designed to be detachable, and the economical efficiency is good;
(4) the invention has good market prospect in the technical field of sewage treatment such as heavy metal chemical industry, pharmacy, food, textile, tap water and the like.
Drawings
Fig. 1 is a perspective view of a heavy metal filtration apparatus in example 1.
Fig. 2 is a top view of the heavy metal filtration apparatus of example 1.
FIG. 3 is a sectional view A-A of the heavy metal filtration apparatus of example 1.
FIG. 4 is a sectional view B-B of the heavy metal filtration apparatus of example 1.
FIG. 5 is a schematic view showing the direction of water flow in the heavy metal filtration apparatus of example 1.
The reference numerals in fig. 1-5 are: 1-a container; 2-filtering the screen; 3-a permanent magnet; 5-a filter element framework; 6-a first conduit; 7-a second conduit; 8-a switch valve; 9-a knob switch; 10-closing the plate; 20-covering the upper cover; 31-fixing the block; 32-left fixed block; 33-right fixed block; 41-a water inlet pipe; 42-a water outlet pipe; 43-water inlet pipe joint; 44-water outlet pipe joint; 50-a protective cover; 71-one end of the second conduit is open; 72-the other end of the second conduit is open.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings, which are not intended to limit the invention to the details shown.
The heavy metal filtering device is shown in fig. 1-4 and comprises a container 1, a filter screen 2, a permanent magnet 3, a first pipeline 6 and a second pipeline 7.
The filter screen 2 is arranged in the container 1, is supported by the filter screen framework 5 and is integrally of a hollow structure; the filter screen 2 is made of soft magnetic material.
The water inlet pipe 41 communicates with the container 1 and constitutes a water inlet of the container 1 through which water flows into the container outside the sieve 2. The water outlet pipe 42 is communicated with the container 1 to form a water outlet of the container 1, and water inside the filter screen 2 flows out through the water outlet.
The container 1 is provided with a protective cover 50 at the periphery thereof for protecting and reinforcing the container 1 and the filter net 2.
The periphery of the protective cover 50 is provided with permanent magnets 3 for providing a magnetic field in which the screen 2 is located. The periphery of the permanent magnet is fixedly provided with an upper fixing block 31, a left fixing block 32 and a right fixing block 33 through bolts for fixing the filtering device. In this embodiment, the left and right fixing blocks are provided with groove structures, and the permanent magnets are installed in the groove structures.
One end opening of the first pipeline 6 is positioned at the inner side of the filter screen 2, and the other end opening is communicated with the outside. The first pipeline 6 is provided with a switch valve 8, and the switch valve 8 is controlled to be opened and closed by a knob switch 9, so that whether the openings at the two ends of the first pipeline 6 are communicated or not is controlled.
The second duct 7 has an opening 71 at one end communicating with the first duct 6 and an opening 72 at the other end communicating with the outside through the inside of the screen 2, and a closing plate 10 is provided at the end of the end.
The method for filtering the heavy metal in the water by using the filtering device comprises the following steps:
(1) and adding magnetic nano particles into the water to enable the magnetic nano particles to adsorb heavy metal ions in the water.
(2) As shown in fig. 5, the water treated in step (1) enters the outside of the filter screen 2 in the container 1 through the water inlet (see the dotted line in fig. 5), and enters the inside of the filter screen through the filter screen under the action of water pressure (see the arrow and dotted line in fig. 5); the filter screen made of soft magnetic materials can adsorb the magnetic nanoparticles under the action of the magnetic field provided by the permanent magnet, so that the magnetic nanoparticles are adsorbed by the filter screen when water passes through the filter screen, and heavy metal ions are adsorbed; then, the water inside the filter screen flows out from the water outlet.
(3) When the filter screen is enriched with magnetic nanoparticles, the switch valve 8 of the first pipeline 6 is opened through the knob switch 9, at the moment, a pressure difference exists between the container 1 and the outside, water (shown by a chain line in fig. 5) outside the filter screen 2 in the container 1 flows to the inner side of the filter screen by utilizing the siphon principle, the filter screen is flushed, and the magnetic nanoparticles adsorbed on the filter screen are flushed away from the filter screen and then discharged through the first pipeline. When the acidic substance is added into the second pipeline and enters the first pipeline after passing through the second pipeline, the first pipeline is in an acidic environment, and at the moment, the heavy metal ions and the magnetic nanoparticles can be separated, so that the magnetic nanoparticles can be recycled.
(4) When the filter screen needs to be further deeply cleaned, the fixing bolt is screwed out, the left fixing block and the right fixing block are disassembled, and the magnet and the filter screen are disassembled. The filter screen and the cleaning are cleaned using ultrasonic waves. Therefore, the concentration of heavy metal particles in the sewage can be reduced, and the filtering effect is achieved.
Example 2:
in this embodiment, the structure of the heavy metal filtering device is substantially the same as that in embodiment 1, except that the permanent magnets are fixed on the left and right fixing blocks in an inserting manner.
Example 3:
in this embodiment, the structure of the heavy metal filtering device is substantially the same as that in embodiment 1, except that the permanent magnets are fixed on the left and right fixing blocks in a locking manner.
Example 3:
in this embodiment, the structure of the heavy metal filtering apparatus is substantially the same as that in embodiment 1, except that the permanent magnets are directly fixed to the left and right fixing blocks by magnetic force.
The embodiments described above are intended to illustrate the technical solutions of the present invention in detail, and it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modification, supplement or similar substitution made within the scope of the principles of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a heavy metal filter equipment which characterized by: comprises a container, a filter screen, a permanent magnet and a first pipeline;
the filter screen is of a hollow structure and is arranged in the container; the filter screen is made of soft magnetic material;
the permanent magnet is used for providing a magnetic field, and the filter screen is positioned in the magnetic field;
an opening at one end of the first pipeline is positioned at the inner side of the filter screen, and an opening at the other end of the first pipeline is communicated with the outside;
the first pipeline is provided with a switch valve for controlling the communication of the openings at the two ends of the first pipeline.
2. The heavy metal filtration device of claim 1, wherein: the permanent magnet is positioned on the periphery of the container;
preferably, the permanent magnet is square, annular, horseshoe-shaped, strip-shaped or circular in shape.
3. The heavy metal filtration device of claim 1, wherein: the permanent magnet is fixedly installed through a fixing groove, insertion connection, lock catch connection or magnetic connection.
4. The heavy metal filtration device of claim 1, wherein: the permanent magnet is arranged to be detachable.
5. The heavy metal filtration device of claim 1, wherein: the surface of the permanent magnet is provided with a surface coating, and the surface coating is made of one or more of gold, copper, chromium, tin, zinc, nickel and epoxy resin;
preferably, the surface layer has a thickness of 8 to 25 μm.
6. The heavy metal filtration device of claim 1, wherein: the container is provided with an inlet and an outlet, water flow enters the outer side of a filter screen in the container from the inlet, and under the action of water pressure, the water flow enters the inner side of the filter screen through the filter screen and flows out of the container from the outlet;
preferably, an inlet valve is arranged at the inlet, and an outlet valve is arranged at the outlet.
7. The heavy metal filtration device of claim 1, wherein: the filtering device is also provided with a second pipeline which is communicated with the first pipeline.
8. The use of a heavy metal filtration device as claimed in any one of claims 1 to 7, wherein: the method comprises the following steps:
(1) adding magnetic nanoparticles into water, wherein the magnetic nanoparticles adsorb heavy metal ions in the water;
(2) the water treated in the step (1) flows into the outer side of a filter screen in the container, and under the action of water pressure, the water flows into the inner side of the filter screen through the filter screen; because the filter screen of soft magnetic material can adsorb magnetic nanoparticle under the magnetic field effect that the permanent magnet provided, consequently magnetic nanoparticle is adsorbed by the filter screen when rivers pass through the filter screen to heavy metal ion is adsorbed.
9. The method of using the heavy metal filtration device of claim 8, wherein: further comprising the step (3):
(3) opening a switch valve of the first pipeline, discharging the water flow through the first pipeline after flushing the filter screen by utilizing the siphon principle, and flushing and discharging the magnetic nanoparticles adsorbed on the filter screen;
preferably, an acidic substance is added into the second pipeline, and the magnetic nanoparticles are collected and reused.
10. The method of using the heavy metal filtration device of claim 8, wherein: when the permanent magnet is detachable, the method further comprises the step (4):
(4) when the filter screen needs to be cleaned deeply, the permanent magnet is disassembled, and the filter screen is taken out for cleaning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110337735.3A CN113060891A (en) | 2021-03-30 | 2021-03-30 | Heavy metal filtering device and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110337735.3A CN113060891A (en) | 2021-03-30 | 2021-03-30 | Heavy metal filtering device and using method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN113060891A true CN113060891A (en) | 2021-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110337735.3A Pending CN113060891A (en) | 2021-03-30 | 2021-03-30 | Heavy metal filtering device and using method thereof |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09117618A (en) * | 1995-10-24 | 1997-05-06 | Hitachi Ltd | Purifying device |
| CN101385994A (en) * | 2008-10-17 | 2009-03-18 | 中国海洋石油总公司 | Method for recovering magnetic particle in fluid and special recovery device |
| CN102344188A (en) * | 2011-06-29 | 2012-02-08 | 无锡光旭新材料科技有限公司 | Permanent magnet composite filter screen grid |
| CN103240173A (en) * | 2012-02-08 | 2013-08-14 | 香港科技大学 | Magnetic separator and water treatment system provided therewith |
| CN105457599A (en) * | 2015-11-17 | 2016-04-06 | 中国科学院大学 | Synthesis of magnetic nano-adsorbent material and application method thereof to the treatment of heavy metal waste liquid |
| CN206676091U (en) * | 2017-03-29 | 2017-11-28 | 佛山市顺德区赛盛尔电子科技有限公司 | A kind of filter with detachable magnetic filtration screen |
| CN208340264U (en) * | 2018-04-28 | 2019-01-08 | 云南核联环保科技有限公司 | A kind of sewage-treatment plant |
| CN212091131U (en) * | 2020-05-11 | 2020-12-08 | 浙江玖昱科技有限公司 | High-filtering-performance powder sintered filter element |
-
2021
- 2021-03-30 CN CN202110337735.3A patent/CN113060891A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09117618A (en) * | 1995-10-24 | 1997-05-06 | Hitachi Ltd | Purifying device |
| CN101385994A (en) * | 2008-10-17 | 2009-03-18 | 中国海洋石油总公司 | Method for recovering magnetic particle in fluid and special recovery device |
| CN102344188A (en) * | 2011-06-29 | 2012-02-08 | 无锡光旭新材料科技有限公司 | Permanent magnet composite filter screen grid |
| CN103240173A (en) * | 2012-02-08 | 2013-08-14 | 香港科技大学 | Magnetic separator and water treatment system provided therewith |
| CN105457599A (en) * | 2015-11-17 | 2016-04-06 | 中国科学院大学 | Synthesis of magnetic nano-adsorbent material and application method thereof to the treatment of heavy metal waste liquid |
| CN206676091U (en) * | 2017-03-29 | 2017-11-28 | 佛山市顺德区赛盛尔电子科技有限公司 | A kind of filter with detachable magnetic filtration screen |
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| CN212091131U (en) * | 2020-05-11 | 2020-12-08 | 浙江玖昱科技有限公司 | High-filtering-performance powder sintered filter element |
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| 丁启圣等: "《新型实用过滤技术（第3版）》", 30 June 2011, 冶金工业出版社 * |
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