CN214032057U - Ozone activated carbon nanofiltration membrane PAEs filtering device - Google Patents
Ozone activated carbon nanofiltration membrane PAEs filtering device Download PDFInfo
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- CN214032057U CN214032057U CN202023203475.0U CN202023203475U CN214032057U CN 214032057 U CN214032057 U CN 214032057U CN 202023203475 U CN202023203475 U CN 202023203475U CN 214032057 U CN214032057 U CN 214032057U
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- activated carbon
- nanofiltration membrane
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 124
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 112
- 238000001728 nano-filtration Methods 0.000 title claims abstract description 48
- 239000012528 membrane Substances 0.000 title claims abstract description 46
- 238000001914 filtration Methods 0.000 title claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 109
- 238000009298 carbon filtering Methods 0.000 claims abstract description 35
- 238000009826 distribution Methods 0.000 claims abstract description 24
- 239000002351 wastewater Substances 0.000 claims abstract description 7
- 238000011001 backwashing Methods 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 12
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 7
- 239000002699 waste material Substances 0.000 claims description 4
- 125000005498 phthalate group Chemical group 0.000 description 29
- 239000007789 gas Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 5
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 239000000598 endocrine disruptor Substances 0.000 description 2
- 231100000049 endocrine disruptor Toxicity 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000005374 membrane filtration Methods 0.000 description 2
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- 230000002441 reversible effect Effects 0.000 description 2
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- 241000282414 Homo sapiens Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
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- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
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- 150000002148 esters Chemical class 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 description 1
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- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
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- Separation Using Semi-Permeable Membranes (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The utility model provides a device for filtering PAEs by an ozone activated carbon nanofiltration membrane, which comprises a water distribution tank, a driving pump, an ozone contact device, an ozone generator, an activated carbon filtering device, a water outlet tank, a high-pressure pump and a nanofiltration membrane component; the inlet of the ozone contact device is connected with the outlet of the water distribution water tank, the outlet of the ozone contact device is connected with the inlet of the activated carbon filtering device, and the output end of the ozone generator is connected with the gas inlet end of the ozone contact device; the driving pump is arranged between the water distribution water tank and the ozone contact device; the outlet of the activated carbon filtering device is connected with the inlet of the water outlet tank, the outlet of the water outlet tank is connected with the inlet of the nanofiltration membrane component, and the high-pressure pump is arranged between the water outlet tank and the nanofiltration membrane component; the water producing end of the nanofiltration membrane component is connected with a clear water pipe, and the concentrated water end of the nanofiltration membrane component is connected with a waste water pipe. The utility model effectively filters PAEs in water through ozone-activated carbon-nanofiltration.
Description
Technical Field
The utility model relates to a water treatment facilities field, concretely relates to ozone activated carbon receives filter membrane and filters device of PAEs.
Background
Phthalates (PAEs) are one of the typical endocrine disruptors. PAEs are widely applied to processing of polyvinyl chloride (VVC) and other plastic products, and as PAEs are used in industrial and agricultural production in large quantities, the discharge amount of waste water, waste gas and waste residues of PAEs is increased. At present, the frequency of detecting PAEs in water is higher and higher, and if water containing trace PAEs is drunk for a long time, the water can not only harm the reproductive system, the liver, the nervous system and the like of human beings.
In the prior art, most domestic water plants still adopt the conventional process, namely coagulation, precipitation, filtration and disinfection, and can not effectively remove endocrine disruptors such as PAEs. Therefore, a perfect technology for filtering PAEs is urgently needed at present, and the drinking water quality of residents is improved.
It is obvious that the prior art has certain defects.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide a device for filtering PAEs with ozone activated carbon nanofiltration membrane, which effectively filters PAEs in water through ozone-activated carbon nanofiltration.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a device for filtering PAEs (polycyclic aromatic hydrocarbons) by using an ozone activated carbon nanofiltration membrane comprises a water distribution water tank, a driving pump, an ozone contact device, an ozone generator, an activated carbon filtering device, a water outlet water tank, a high-pressure pump and a nanofiltration membrane component;
the inlet of the ozone contact device is connected with the outlet of the water distribution water tank, the outlet of the ozone contact device is connected with the inlet of the activated carbon filtering device, and the output end of the ozone generator is connected with the gas inlet end of the ozone contact device; the driving pump is arranged between the water distribution water tank and the ozone contact device; the outlet of the activated carbon filtering device is connected with the inlet of the water outlet tank, the outlet of the water outlet tank is connected with the inlet of the nanofiltration membrane component, and the high-pressure pump is arranged between the water outlet tank and the nanofiltration membrane component; the water producing end of the nanofiltration membrane component is connected with a clear water pipe, and the concentrated water end of the nanofiltration membrane component is connected with a waste water pipe.
Furthermore, the inlet of the ozone contact device is arranged at the upper part of the ozone contact device, and the outlet of the ozone contact device is arranged at the bottom of the ozone contact device; and the gas inlet end of the ozone contact device is arranged at the bottom of the ozone contact device, and the top of the ozone contact device is also provided with an ozone tail gas discharge pipe.
Further, a first valve and a liquid flowmeter are arranged between the water distribution water tank and the ozone contact device; and an air valve and a gas flowmeter are arranged between the ozone generating device and the ozone contact device.
Furthermore, the active carbon filtering device comprises an outer container, an active carbon filtering material layer and a supporting layer; the inlet of the active carbon filtering device is arranged at the upper part of the external container, the outlet of the active carbon filtering device is arranged at the bottom of the external container, and the outlet of the external container is fixedly provided with a water distribution plate in which a plurality of through holes are arranged; the active carbon filter material layer is arranged at the upper part in the outer container, and the supporting layer is arranged below the active carbon filter material layer. .
Further, the device also comprises a back washing device; the back washing device comprises a back washing pump and a back washing drain pipe; the back washing pump is arranged between the water outlet tank and the outlet of the active carbon filtering device, and the output direction of the back washing pump faces to the outlet of the active carbon filtering device; the backwashing water discharge pipe is arranged at the top of the active carbon filtering device; and a second valve is arranged between the outlet of the ozone contact device and the inlet of the activated carbon filtering device.
Furthermore, a first pressure gauge and a third valve are arranged between the inlet of the nanofiltration membrane component and the outlet of the water outlet tank, and a second pressure gauge and a fourth valve are arranged at the waste liquid end of the nanofiltration membrane component.
Furthermore, the water distribution water tank, the ozone contact device and the activated carbon filter device are provided with emptying valves for emptying the water inside.
The utility model provides a pair of ozone activated carbon receives device that filter PAEs of filter membrane has following advantage:
three-stage filtration, namely composite filtration is formed by chemical means and physical means, PAEs in water are effectively removed, and water quality is improved;
each stage of filtration is provided with a valve and a corresponding detection part, so that the corresponding ozone quantity, filtration pressure and the like are effectively controlled, and the optimal filtration effect is kept;
the back washing device is arranged, so that the service life of the active carbon filtering device is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic side structure view of a device for filtering PAEs by an ozone activated carbon nanofiltration membrane according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an activated carbon filter device.
Description of reference numerals:
1. water distribution tank 2 and driving pump
3. Ozone contact device 4 and ozone generator
5. Active carbon filter device 6 and water outlet tank
7. High-pressure pump 8 and nanofiltration membrane component
9. Clear water pipe 10 and waste water pipe
11. Ozone tail gas discharge pipe 12, first valve
13. Liquid flowmeter 14, air valve
15. Gas flowmeter 16, backwash pump
17. Backwash drain pipe 18 and second valve
19. A first pressure gauge 20 and a third valve
21. A second pressure gauge 22 and a fourth valve
23. Atmospheric valve 24, outer container
25. Water distribution plate 26, active carbon filter material layer
27. Bearing layer
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention and the accompanying drawings are combined together to clearly and completely describe the technical solutions in the embodiments of the present invention. It should be noted that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example one
Referring to fig. 1 to 2, an embodiment of the present invention provides an apparatus for filtering PAEs with an ozone activated carbon nanofiltration membrane, including a water distribution tank 1, a driving pump 2, an ozone contact device 3, an ozone generator 4, an activated carbon filtration device 5, a water outlet tank 6, a high pressure pump 7, and a nanofiltration membrane assembly 8;
the inlet of the ozone contact device 3 is connected with the outlet of the water distribution tank 1, the outlet of the ozone contact device 3 is connected with the inlet of the activated carbon filtering device 5, and the output end of the ozone generator 4 is connected with the gas inlet end of the ozone contact device 3; the driving pump 2 is arranged between the water distribution water tank 1 and the ozone contact device 3; an outlet of the activated carbon filtering device 5 is connected with an inlet of the water outlet tank 6, an outlet of the water outlet tank 6 is connected with an inlet of the nanofiltration membrane component 8, and the high-pressure pump 7 is arranged between the water outlet tank 6 and the nanofiltration membrane component 8; the water producing end of the nanofiltration membrane component 8 is connected with a clear water pipe 9, and the concentrated water end of the nanofiltration membrane component 8 is connected with a waste water pipe 10.
The utility model realizes three-stage filtration of ozone-activated carbon-nanofiltration, wherein the ozone-activated carbon filtration is the pretreatment of the nanofiltration process.
The ozone reaction for removing PAEs belongs to a chemical removal means. The reaction of ozone and PAEs, mainly the decomposition of ozone in water generates hydroxyl radical (. OH) with stronger oxidizing power, which can break C-C bond or C-O bond of PAEs, and degrade esters into acids, alcohols, carbon dioxide and water. About 30% of PAEs can be removed by ozone.
The main working mode is that ozone is prepared by the ozone generator 4, the ozone is introduced from the gas inlet end of the ozone contact device 3, the water to be filtered enters from the inlet of the ozone contact device 3, and the water are fully mixed to achieve the reaction purpose. In order to realize the above reaction, preferably, the inlet of the ozone contacting device 3 is arranged at the upper part of the ozone contacting device, and the outlet of the ozone contacting device is arranged at the bottom of the ozone contacting device; and the gas inlet end of the ozone contact device 3 is arranged at the bottom of the ozone contact device, and the top of the ozone contact device is also provided with an ozone tail gas discharge pipe 11. Therefore, the ozone is fully contacted with the water, and the redundant ozone is discharged from the ozone tail gas discharge pipe 11, can be specially treated after being discharged, and can also be directly discharged to an empty space for dilution. In order to allow the ozone to contact and react with the water sufficiently, a mixer (not shown) having a plurality of vanes is generally provided inside the ozone contact device 3 so that the ozone is dispersed as uniformly as possible into fine bubbles and contacts the water.
Since the concentration of ozone corresponds to the flow rate of water, in order to better match this relationship, it is preferable that a first valve 12 and a liquid flow meter 13 are further provided between the water distribution tank 1 and the ozone contact device 3; a gas valve 14 and a gas flowmeter 15 are arranged between the ozone generating device and the ozone contact device 3. Therefore, the concentration of the ozone is detected and controlled, and the optimal filtering effect is achieved.
Followed by activated carbon filtration. The single use of activated carbon for filtration has certain limitations, but when the activated carbon is used together with processes such as ozone and membrane filtration, trace PAEs in drinking water can be effectively removed. Physical adsorption is a main action mechanism of the activated carbon for degrading the PAEs, the activated carbon has huge specific surface area, the PAEs are adsorbed into pores of the activated carbon over time, and about 80 percent of the PAEs can be removed through the activated carbon.
Referring to fig. 2 in detail, the activated carbon filter device 5 preferably comprises an outer container 24, an activated carbon filter material layer 26, and a supporting layer 27; the inlet of the active carbon filter device 5 is arranged at the upper part of the outer container 24, the outlet of the active carbon filter device 5 is arranged at the bottom of the outer container 24, and the outlet of the outer container 24 is fixedly provided with a water distribution plate 25 with a plurality of through holes; an activated carbon filter layer 26 is provided at an upper portion in the outer container 24, and a support layer 27 is provided below the activated carbon filter layer 26. The outer container 24 is a cylindrical container made of organic glass, which facilitates observation of the state of the activated carbon filter layer 26.
Since the contents of the micropores of the activated carbon are easily filled with impurities after a long time use and then the filtration efficiency is decreased, it is necessary to wash the activated carbon as needed in order to overcome this problem. Therefore, preferably, a back washing device is also arranged behind the activated carbon filtering device 5; the back washing device comprises a back washing pump 16 and a back washing drain pipe 17; the back washing pump 16 is arranged between the water outlet tank 6 and the outlet of the active carbon filtering device 5, and the output direction faces to the outlet of the active carbon filtering device 5; the back washing water discharge pipe 17 is arranged at the top of the active carbon filtering device 5; a second valve 18 is arranged between the outlet of the ozone contact device 3 and the inlet of the active carbon filter device 5. When the backwashing is carried out, the second valve 18 is closed, then the backwashing pump 16 is opened to generate larger reverse water pressure, so that the water in the water outlet tank 6 is reversely input into the activated carbon filtering device 5, and impurities in the micropores are washed out through the reverse action of the water flow. The flushed waste water is discharged through the backwash drain pipe 17.
During normal filtration, the supporting layer 27 supports the activated carbon filter material layer 26, and prevents the activated carbon filter material layer 26 from flowing away from the activated carbon filter device 5. During back flushing, the supporting layer 27 converts the kinetic energy of the water flow ejected from each hole of the water distribution plate into potential energy, balances the pressure of each point and plays a role in uniformly distributing water. The bearing layer 27 is typically a moderately sized pebble. For the size of the voids in the support layer 27, the maximum void size should be smaller than the minimum particle size of the activated carbon filter material immediately adjacent to the support layer so that the activated carbon filter material does not run off. At the same time, the stability is enough to resist the water flow impulsive force in the back flushing process.
Finally, nanofiltration membrane filtration is carried out. The main mechanism of action of nanofiltration is entrapment. By applying a certain operating pressure, water molecules and a small part of dissolved salts pass through the selective semipermeable membrane to be produced as clear water under the action of the osmotic pressure; and other impurities such as dissolved and colloidal substances, organic substances, bacteria, microorganisms and the like can be intercepted and discharged along with the concentrated water. The nanofiltration membrane has the pore diameter of 0.01-0.0001um and the molecular weight cutoff of 100-1000, can well cut off PAEs (with the molecular weight of 149-391) in water, and can remove more than 95 percent through nanofiltration.
In order to better detect and adjust the operating pressure and adapt to different water qualities and flow rates, preferably, a first pressure gauge 19 and a third valve 20 are arranged between the inlet of the nanofiltration membrane module 8 and the outlet of the effluent water tank 6, and a second pressure gauge 21 and a fourth valve 22 are arranged at the waste liquid end of the nanofiltration membrane module 8.
Preferably, the water distribution tank 1, the ozone contact device 3 and the activated carbon filter device 5 are provided with a blow-down valve 23 for emptying the water inside. The method is mainly convenient for stopping the filtration process at any link, and then emptying the water in each link to meet the requirements of stopping, overhauling, maintaining and the like.
The utility model provides a pair of ozone activated carbon is received filter membrane and is filtered device of PAEs through ozone-activated carbon-the tertiary composite filter technology of receiving the filter, has combined chemical means, physical means to filter, realizes getting rid of the effect of the PAEs of aquatic. Each stage of filtration is provided with a valve and corresponding detection parts such as a flowmeter, a barometer and the like, so that the corresponding ozone quantity, the filtration pressure and the like are effectively controlled, and the optimal filtration effect is kept. And is equipped with a back washing device which can wash the active carbon to prolong the service life of the active carbon filtering device 5, so that the active carbon filtering device can be used repeatedly.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (7)
1. The utility model provides a device that ozone activated carbon receives filter membrane and filters PAEs which characterized in that: comprises a water distribution tank, a driving pump, an ozone contact device, an ozone generator, an active carbon filtering device, a water outlet tank, a high-pressure pump and a nanofiltration membrane component;
the inlet of the ozone contact device is connected with the outlet of the water distribution water tank, the outlet of the ozone contact device is connected with the inlet of the activated carbon filtering device, and the output end of the ozone generator is connected with the gas inlet end of the ozone contact device; the driving pump is arranged between the water distribution water tank and the ozone contact device; the outlet of the activated carbon filtering device is connected with the inlet of the water outlet tank, the outlet of the water outlet tank is connected with the inlet of the nanofiltration membrane component, and the high-pressure pump is arranged between the water outlet tank and the nanofiltration membrane component; the water producing end of the nanofiltration membrane component is connected with a clear water pipe, and the concentrated water end of the nanofiltration membrane component is connected with a waste water pipe.
2. The apparatus of claim 1, wherein the ozone activated carbon nanofiltration membrane is used for filtering PAEs, and the apparatus is characterized in that: the inlet of the ozone contact device is arranged at the upper part of the ozone contact device, and the outlet of the ozone contact device is arranged at the bottom of the ozone contact device; and the gas inlet end of the ozone contact device is arranged at the bottom of the ozone contact device, and the top of the ozone contact device is also provided with an ozone tail gas discharge pipe.
3. The apparatus of claim 1 or 2, wherein the ozone activated carbon nanofiltration membrane is used for filtering PAEs, and the apparatus is characterized in that: a first valve and a liquid flowmeter are also arranged between the water distribution water tank and the ozone contact device; and an air valve and a gas flowmeter are arranged between the ozone generator and the ozone contact device.
4. The apparatus of claim 1, wherein the ozone activated carbon nanofiltration membrane is used for filtering PAEs, and the apparatus is characterized in that: the active carbon filtering device comprises an external container, an active carbon filtering material layer and a supporting layer; the inlet of the active carbon filtering device is arranged at the upper part of the external container, the outlet of the active carbon filtering device is arranged at the bottom of the external container, and the outlet of the external container is fixedly provided with a water distribution plate in which a plurality of through holes are arranged; the active carbon filter material layer is arranged at the upper part in the outer container, and the supporting layer is arranged below the active carbon filter material layer.
5. The apparatus of claim 1 or 4, wherein the ozone activated carbon nanofiltration membrane is used for filtering PAEs, and the apparatus comprises: also comprises a back washing device; the back washing device comprises a back washing pump and a back washing drain pipe; the back washing pump is arranged between the water outlet tank and the outlet of the active carbon filtering device, and the output direction of the back washing pump faces to the outlet of the active carbon filtering device; the backwashing water discharge pipe is arranged at the top of the active carbon filtering device; and a second valve is arranged between the outlet of the ozone contact device and the inlet of the activated carbon filtering device.
6. The apparatus of claim 1, wherein the ozone activated carbon nanofiltration membrane is used for filtering PAEs, and the apparatus is characterized in that: and a first pressure gauge and a third valve are arranged between the inlet of the nanofiltration membrane component and the outlet of the water outlet tank, and a second pressure gauge and a fourth valve are arranged at the waste liquid end of the nanofiltration membrane component.
7. The apparatus of claim 1, 2, 4 or 6 for filtering PAEs with ozone activated carbon nanofiltration membrane, wherein: the water distribution water tank, the ozone contact device and the activated carbon filter device are provided with emptying valves for emptying the water inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023203475.0U CN214032057U (en) | 2020-12-25 | 2020-12-25 | Ozone activated carbon nanofiltration membrane PAEs filtering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023203475.0U CN214032057U (en) | 2020-12-25 | 2020-12-25 | Ozone activated carbon nanofiltration membrane PAEs filtering device |
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| Publication Number | Publication Date |
|---|---|
| CN214032057U true CN214032057U (en) | 2021-08-24 |
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ID=77342699
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023203475.0U Expired - Fee Related CN214032057U (en) | 2020-12-25 | 2020-12-25 | Ozone activated carbon nanofiltration membrane PAEs filtering device |
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| Country | Link |
|---|---|
| CN (1) | CN214032057U (en) |
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2020
- 2020-12-25 CN CN202023203475.0U patent/CN214032057U/en not_active Expired - Fee Related
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Granted publication date: 20210824 |