CN211972038U - CNC waste water zero discharge system - Google Patents
CNC waste water zero discharge system Download PDFInfo
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- CN211972038U CN211972038U CN201821574127.4U CN201821574127U CN211972038U CN 211972038 U CN211972038 U CN 211972038U CN 201821574127 U CN201821574127 U CN 201821574127U CN 211972038 U CN211972038 U CN 211972038U
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- ultrafiltration
- water tank
- filter
- softener
- tank
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- 239000002351 wastewater Substances 0.000 title claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 108
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 63
- 238000004140 cleaning Methods 0.000 claims abstract description 34
- 150000003839 salts Chemical class 0.000 claims abstract description 19
- 239000008394 flocculating agent Substances 0.000 claims abstract description 17
- 238000001223 reverse osmosis Methods 0.000 claims description 34
- 230000000694 effects Effects 0.000 claims description 12
- 230000008929 regeneration Effects 0.000 claims description 7
- 238000011069 regeneration method Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000012141 concentrate Substances 0.000 claims description 2
- 239000010865 sewage Substances 0.000 abstract description 16
- 239000012535 impurity Substances 0.000 abstract description 7
- 239000002245 particle Substances 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 238000005406 washing Methods 0.000 abstract 2
- 239000008187 granular material Substances 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 239000012528 membrane Substances 0.000 description 26
- 238000011084 recovery Methods 0.000 description 13
- 238000002425 crystallisation Methods 0.000 description 8
- 230000008025 crystallization Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 102000009027 Albumins Human genes 0.000 description 3
- 108010088751 Albumins Proteins 0.000 description 3
- 241000700605 Viruses Species 0.000 description 3
- 238000011001 backwashing Methods 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 239000000084 colloidal system Substances 0.000 description 3
- 239000003657 drainage water Substances 0.000 description 3
- 238000000909 electrodialysis Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000005189 flocculation Methods 0.000 description 3
- 230000016615 flocculation Effects 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 238000001471 micro-filtration Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000002070 germicidal effect Effects 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
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Abstract
The utility model discloses a CNC waste water zero discharge system, including effluent disposal basin, ultrafiltration device and thick water tank, the effluent disposal basin right side is equipped with self-cleaning MF filter, self-cleaning MF filter right side is equipped with bag filter, the bag filter right side is equipped with ultrafiltration device, ultrafiltration device right side is equipped with ultrafiltration product water tank, ultrafiltration device is through pipeline and ultrafiltration product water tank intercommunication, ultrafiltration product water tank right side is equipped with first softener, first softener right side is equipped with regenerated salt case, regenerated salt case right side is equipped with the second softener, second softener right side is equipped with precision filter, this CNC waste water zero discharge system, sewage send to self-cleaning MF filter and bag filter, add flocculating agent on the pipeline and add the device, make self-cleaning MF filter effectively get rid of suspended solid, large granule impurity etc. in the sewage, and the self-cleaning MF filter has the function of automatic washing, and washing the filtered large-particle substances to a wastewater tank.
Description
Technical Field
The utility model relates to a sewage treatment technical field specifically is CNC waste water zero discharge system.
Background
Along with the development of economic society and the improvement of environmental protection requirements of people, the treatment of wastewater is more and more concerned by people.
The treatment process of the salt-containing wastewater has the advantages of wastewater recovery rate, industrial salt recycling, salt recovery rate, stable operation of the membrane unit, reduction of production cost and zero emission.
SUMMERY OF THE UTILITY MODEL
In order to achieve the above object, the utility model provides a following technical scheme: CNC waste water zero discharge system, including effluent disposal basin, ultrafiltration device and dense water tank, effluent disposal basin right side is equipped with self-cleaning MF filter, self-cleaning MF filter right side is equipped with bag filter, the bag filter right side is equipped with ultrafiltration device, ultrafiltration device right side is equipped with ultrafiltration product water tank, ultrafiltration device passes through the pipeline and is linked together with ultrafiltration product water tank, ultrafiltration product water tank right side is equipped with first softener, first softener right side is equipped with the regeneration salt case, regeneration salt case right side is equipped with the second softener, second softener right side is equipped with precision filter, the precision filter lower part is equipped with the first-level high-pressure pump, the first-level high-pressure pump left side is equipped with one-level reverse osmosis unit, one-level reverse osmosis unit left side is equipped with RO middle water tank, RO middle water tank passes through the pipeline and is linked together with one-level reverse osmosis unit, RO middle water tank left side is, second grade high-pressure pump left side is equipped with second grade reverse osmosis unit, second grade reverse osmosis unit left side is equipped with the third grade high-pressure pump, third grade high-pressure pump left side is equipped with third grade reverse osmosis unit, the water tank is produced to third grade reverse osmosis unit sub-unit connection dense water tank and RO, dense water tank right side is equipped with tubular heat exchanger, the tubular heat exchanger right side is equipped with one effect evaporimeter, one effect evaporimeter right side is equipped with one effect separator, one effect separator right side is equipped with two effect evaporimeters, two effect separator right sides is equipped with the condenser, two effect separator sub-unit connection has the discharge pump, the discharge pump lower part is equipped with the concentrate pond.
As a preferred embodiment of the present invention, the inside of the wastewater tank is provided with a metering pump, and the surface of the pipeline of the wastewater tank is arranged in the metering pump.
As an optimal implementation mode of the utility model, be equipped with the RO booster pump between water tank and the first demineralizer are produced in the ultrafiltration, the pipeline that water tank and first demineralizer were produced in RO booster pump and ultrafiltration is linked together.
As a preferred embodiment of the utility model, be equipped with the flocculating agent between wastewater disposal basin and the self-cleaning MF filter and add the device, the flocculating agent adds the connecting tube of device and wastewater disposal basin and is linked together.
As an optimal implementation mode of the utility model, an imitate the separator right side and be equipped with one and imitate catch water, two imitate the separator right side and be equipped with two and imitate catch water.
Compared with the prior art, the beneficial effects of the utility model are as follows:
according to the CNC wastewater zero discharge system, 1, a bactericide is added to a wastewater inlet pipeline of a wastewater pool, so that the content of microorganisms is reduced.
2. The sewage is sent to a self-cleaning MF filter and a bag filter, a flocculating agent adding device is added on a pipeline, so that suspended matters, large granular impurities and the like in the sewage are effectively removed by the self-cleaning MF filter, and the self-cleaning MF filter has an automatic flushing function and flushes filtered large granular substances to a wastewater disposal basin; the flocculating agent can effectively carry out flocculation precipitation on sewage with negative charges of suspended particles in the sewage, so that the water quality becomes clear;
3. the ultrafiltration device adopts an air cleaning type ultrafiltration membrane, impurities in the membrane can be effectively cleaned and discharged only by introducing a certain amount of air during cleaning, so that water resources are greatly saved, the ultrafiltration membrane adopts an anti-pollution and high-temperature resistant type ultrafiltration membrane, and the ultrafiltration membrane can be disassembled and can be cleaned and disinfected independently, so that the service life of the ultrafiltration is greatly prolonged; the ultrafiltration section is limited to remove viruses, colloids, albumin and the like in water;
4. the back end sets up first demineralizer and second demineralizer, can effectually get rid of the heavy metal ion of aquatic, makes quality of water obtain softening, has guaranteed the requirement of intaking that RO intake end.
The RO membrane treatment method can remove 99.7% of salt components in water, greatly reduce the conductivity of outlet water, but attention needs to be paid to adding a reducing agent before RO water enters so as to prevent the RO membrane from being damaged by oxidation. The RO section is subjected to recovery treatment through a first-stage high-pressure pump, a first-stage reverse osmosis device, an RO intermediate water tank, a second-stage high-pressure pump, a second-stage reverse osmosis device, a third-stage high-pressure pump and a third-stage reverse osmosis device, the recovery rate is improved in a three-stage recovery mode, and meanwhile, because the conductivity of final concentrated water is extremely high and RO membrane treatment cannot be used, the concentrated water of produced water is sent to a second-effect evaporator for concentration and crystallization treatment.
6. And (3) conveying ultrafiltration backwashing water, softener regeneration drainage water and RO cleaning water in the system to a concentrated water tank, carrying out microfiltration and electrodialysis treatment, conveying the final concentrated solution to a concentrated water tank, and carrying out double-effect/multi-effect evaporation crystallization treatment.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic view of the whole process flow of the CNC wastewater zero discharge system of the utility model;
figure 2 is the utility model discloses CNC waste water zero discharge system's two effect crystallization process sketch views.
In the figure: a wastewater pool-1, a metering pump-2, a flocculating agent adding device-3, a self-cleaning MF filter-4, a bag filter-5, an ultrafiltration device-6, an ultrafiltration product water tank-7, a first softener-8, a regenerated salt tank-9, a second softener-10, a precision filter-11, a first-stage high-pressure pump-12, a first-stage reverse osmosis device-13, an RO intermediate water tank-14, a second-stage high-pressure pump-15, a second-stage reverse osmosis device-16, a third-stage high-pressure pump-17, a third-stage reverse osmosis device-18, an RO product water tank-19, a concentrated water tank-20, a tubular heat exchanger-21, a first-effect evaporator-22, a first-effect separator-23, a first-effect steam-water separator-24, a second-effect evaporator-25, a second-effect separator-26, A double-effect steam-water separator-27, a condenser-28, a discharge pump-29, a concentrated solution pool-30 and an RO booster pump-31.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
Referring to fig. 1-2, the CNC wastewater zero discharge system comprises a wastewater pool 1, an ultrafiltration device 6 and a concentrated water tank 20, wherein a self-cleaning MF filter 4 is arranged on the right side of the wastewater pool 1, a bag filter 5 is arranged on the right side of the self-cleaning MF filter 4, the ultrafiltration device 6 is arranged on the right side of the bag filter 5, an ultrafiltration product water tank 7 is arranged on the right side of the ultrafiltration device 6, the ultrafiltration device 6 is communicated with the ultrafiltration product water tank 7 through a pipeline, a first softener 8 is arranged on the right side of the ultrafiltration product water tank 7, a regenerated salt tank 9 is arranged on the right side of the first softener 8, a second softener 10 is arranged on the right side of the regenerated salt tank 9, a precision filter 11 is arranged on the right side of the second softener 10, a first-stage high-pressure pump 12 is arranged on the lower portion of the precision filter 11, a first-stage reverse osmosis device 13 is arranged on the left, the RO water tank 14 is communicated with the first-stage reverse osmosis device 13 through a pipeline, the left side of the RO water tank 14 is provided with a second-stage high-pressure pump 15, the left side of the second-stage high-pressure pump 15 is provided with a second-stage reverse osmosis device 16, the left side of the second-stage reverse osmosis device 16 is provided with a third-stage high-pressure pump 17, the left side of the third-stage high-pressure pump 17 is provided with a third-stage reverse osmosis device 18, the lower part of the third-stage reverse osmosis device 18 is connected with a concentrated water tank 20 and an RO water producing tank 19, the right side of the concentrated water tank 20 is provided with a tubular heat exchanger 21, the right side of the tubular heat exchanger 21 is provided with a first-effect evaporator 22, the right side of the first-effect evaporator 22 is provided with a first-effect separator 23, the right side of the first-effect separator 23 is, and a concentrated solution pool 30 is arranged at the lower part of the discharge pump 29.
Referring to fig. 1, a metering pump 2 is arranged inside a wastewater tank 1, the metering pump 2 is arranged on the surface of a pipeline of the wastewater tank 1, and the metering pump 2 meters the amount of wastewater, so that statistics is facilitated.
Referring to fig. 1, an RO booster pump 31 is disposed between the ultrafiltration product water tank 7 and the first softener 8, the RO booster pump 31 is communicated with the pipes of the ultrafiltration product water tank 7 and the first softener 8, and the RO booster pump 31 increases the pressure inside the ultrafiltration product water tank.
Referring to fig. 1, a flocculating agent adding device 3 is arranged between a wastewater pool 1 and a self-cleaning MF filter 4, the flocculating agent adding device 3 is communicated with a connecting pipeline of the wastewater pool 1, and the flocculating agent adding device 3 automatically adds flocculating agent to increase the processing speed.
Referring to fig. 2, a first-effect steam-water separator 24 is arranged on the right side of the first-effect separator 23, a second-effect steam-water separator 27 is arranged on the right side of the second-effect separator 26, and the first-effect steam-water separator and the second-effect steam-water separator separate water vapor in sewage to increase the concentration of concentrated water and facilitate crystallization.
CNC waste water zero discharge system, add germicide on 1 inlet channel of wastewater disposal basin, reduce microorganism content. Sewage is sent to a self-cleaning MF filter 4 and a bag filter 5, a flocculating agent adding device 3 is added on a pipeline, so that suspended matters, large granular impurities and the like in the sewage are effectively removed by the self-cleaning MF filter 4, the self-cleaning MF filter 4 has an automatic flushing function, and filtered large granular substances are flushed to a wastewater tank 1; the flocculating agent can effectively carry out flocculation precipitation on sewage with negative charges of suspended particles in the sewage, so that the water quality becomes clear; the ultrafiltration device 6 adopts an air cleaning type ultrafiltration membrane, impurities in the membrane can be effectively cleaned and discharged only by introducing a certain amount of air during cleaning, so that water resources are greatly saved, the ultrafiltration membrane adopts an anti-pollution and high-temperature resistant type ultrafiltration membrane, and the ultrafiltration membrane can be disassembled and can be cleaned and disinfected independently, so that the service life of the ultrafiltration is greatly prolonged; the ultrafiltration device can remove virus, colloid, albumin and the like in water in a limited way; the back end sets up first demineralizer 8 and second demineralizer 10, can effectually get rid of the heavy metal ion of aquatic, makes quality of water obtain softening, has guaranteed the requirement of intaking that RO intake end. The RO membrane treatment method can remove 99.7% of salt components in water and greatly reduce the conductivity of outlet water, but attention needs to be paid to adding a reducing agent before RO water enters so as to prevent an RO membrane from being damaged by oxidation. The RO section is subjected to recovery treatment through a first-stage high-pressure pump 12, a first-stage reverse osmosis device 13, an RO intermediate water tank 14, a second-stage high-pressure pump 15, a second-stage reverse osmosis device 16, a third-stage high-pressure pump 17 and a third-stage reverse osmosis device 18, the recovery rate is improved in a three-stage recovery mode, and simultaneously, because the conductivity of final concentrated water is extremely high and RO membrane treatment cannot be used, the concentrated water of produced water is sent to a first-effect evaporator 22 and a second-effect evaporator 25 for concentration and crystallization treatment. And (3) conveying ultrafiltration backwashing water, softener regeneration drainage water and RO cleaning water in the system to a concentrated water tank, carrying out microfiltration and electrodialysis treatment, conveying the final concentrated solution to a concentrated water tank, and carrying out double-effect/multi-effect evaporation crystallization treatment.
The utility model discloses a wastewater disposal basin 1, a metering pump 2, a flocculating agent adding device 3, a self-cleaning MF filter 4, a bag filter 5, an ultrafiltration device 6, an ultrafiltration product water tank 7, a first softener 8, a regenerated salt tank 9, a second softener 10, a precision filter 11, a first-level high-pressure pump 12, a first-level reverse osmosis device 13, an RO intermediate water tank 14, a second-level high-pressure pump 15, a second-level reverse osmosis device 16, a third-level high-pressure pump 17, a third-level reverse osmosis device 18, an RO product water tank 19, a concentrated water tank 20, a tubular heat exchanger 21, a first-effect evaporator 22, a first-effect separator 23, a first-effect steam-water separator 24, a second-effect evaporator 25, a second-effect separator 26, a second-effect steam-water separator 27, a condenser 28, a discharge pump 29, a concentrated liquid tank 30 and an RO booster pump 31, wherein the components are general standard components or the components known by technical personnel in the field, the structure and the principle of, the utility model provides a problem be the processing technology who contains salt waste water at waste water recovery rate, industrial salt resourceization, salt recovery rate, stable operation of membrane unit, reduction in production cost, realization zero release, the utility model discloses a combination of each other of above-mentioned part, this CNC waste water zero release system adds germicide on the wastewater disposal basin inlet channel, reduces microbial content. The sewage is sent to a self-cleaning MF filter and a bag filter, a flocculating agent adding device is added on a pipeline, so that suspended matters, large granular impurities and the like in the sewage are effectively removed by the self-cleaning MF filter, and the self-cleaning MF filter has an automatic flushing function and flushes filtered large granular substances to a wastewater disposal basin; the flocculating agent can effectively carry out flocculation precipitation on sewage with negative charges of suspended particles in the sewage, so that the water quality becomes clear; the ultrafiltration device adopts an air cleaning type ultrafiltration membrane, impurities in the membrane can be effectively cleaned and discharged only by introducing a certain amount of air during cleaning, so that water resources are greatly saved, the ultrafiltration membrane adopts an anti-pollution and high-temperature resistant type ultrafiltration membrane, and the ultrafiltration membrane can be disassembled and can be cleaned and disinfected independently, so that the service life of the ultrafiltration is greatly prolonged; the ultrafiltration device can remove virus, colloid, albumin and the like in water in a limited way; the back end sets up first demineralizer and second demineralizer, can effectually get rid of the heavy metal ion of aquatic, makes quality of water obtain softening, has guaranteed the requirement of intaking that RO intake end. The RO membrane treatment process can remove a salt component in water, greatly reducing the conductivity of the discharged water, but it is necessary to pay attention to the addition of a reducing agent before the RO water is fed, so as to prevent the RO membrane from being damaged by oxidation. The RO section is subjected to recovery treatment through a first-stage high-pressure pump, a first-stage reverse osmosis device, an RO intermediate water tank, a second-stage high-pressure pump, a second-stage reverse osmosis device, a third-stage high-pressure pump and a third-stage reverse osmosis device, the recovery rate is improved in a three-stage recovery mode, and meanwhile, because the conductivity of final concentrated water is extremely high and RO membranes cannot be used for treatment, the concentrated water of produced water is sent to a first-effect evaporator and a second-effect evaporator for concentration and crystallization treatment. And (3) conveying ultrafiltration backwashing water, softener regeneration drainage water and RO cleaning water in the system to a concentrated water tank, carrying out microfiltration and electrodialysis treatment, conveying the final concentrated solution to a concentrated water tank, and carrying out double-effect/multi-effect evaporation crystallization treatment.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art will be able to refer to the description as a whole, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
- CNC waste water zero discharge system, its characterized in that: including effluent disposal basin (1), ultrafiltration device (6) and dense water tank (20), effluent disposal basin (1) right side is equipped with self-cleaning MF filter (4), self-cleaning MF filter (4) right side is equipped with pocket filter (5), pocket filter (5) right side is equipped with ultrafiltration device (6), ultrafiltration device (6) right side is equipped with ultrafiltration product water tank (7), ultrafiltration device (6) are linked together through pipeline and ultrafiltration product water tank (7), ultrafiltration product water tank (7) right side is equipped with first softener (8), first softener (8) right side is equipped with regeneration salt case (9), regeneration salt case (9) right side is equipped with second softener (10), second softener (10) right side is equipped with precision filter (11), precision filter (11) lower part is equipped with first-level high-pressure pump (12), first-level high-pressure pump (12) left side is equipped with reverse osmosis primary device (13), the device is characterized in that an RO middle water tank (14) is arranged on the left side of the first-stage reverse osmosis device (13), the RO middle water tank (14) is communicated with the first-stage reverse osmosis device (13) through a pipeline, a second-stage high-pressure pump (15) is arranged on the left side of the RO middle water tank (14), a second-stage reverse osmosis device (16) is arranged on the left side of the second-stage reverse osmosis device (16), a third-stage high-pressure pump (17) is arranged on the left side of the third-stage high-pressure pump (17), a concentrated water tank (20) and an RO product water tank (19) are connected to the lower portion of the third-stage reverse osmosis device (18), a tubular heat exchanger (21) is arranged on the right side of the concentrated water tank (20), a first-effect evaporator (22) is arranged on the right side of the tubular heat exchanger (21), a first-effect separator (23) is arranged, two effect evaporator (25) right side is equipped with two effect separator (26), two effect separator (26) right side is equipped with condenser (28), two effect separator (26) sub-unit connection has discharge pump (29), discharge pump (29) lower part is equipped with concentrate pond (30).
- 2. The CNC wastewater zero discharge system of claim 1, characterized in that: the water treatment device is characterized in that a metering pump (2) is arranged in the wastewater tank (1), and the metering pump (2) is arranged on the surface of a pipeline of the wastewater tank (1).
- 3. The CNC wastewater zero discharge system of claim 1, characterized in that: an RO booster pump (31) is arranged between the ultrafiltration water production tank (7) and the first softener (8), and the RO booster pump (31) is communicated with the ultrafiltration water production tank (7) and the first softener (8).
- 4. The CNC wastewater zero discharge system of claim 1, characterized in that: and a flocculating agent adding device (3) is arranged between the wastewater tank (1) and the self-cleaning MF filter (4), and the flocculating agent adding device (3) is communicated with a connecting pipeline of the wastewater tank (1).
- 5. The CNC wastewater zero discharge system of claim 1, characterized in that: the right side of the first-effect separator (23) is provided with a first-effect steam-water separator (24), and the right side of the second-effect separator (26) is provided with a second-effect steam-water separator (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821574127.4U CN211972038U (en) | 2018-09-27 | 2018-09-27 | CNC waste water zero discharge system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821574127.4U CN211972038U (en) | 2018-09-27 | 2018-09-27 | CNC waste water zero discharge system |
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| Publication Number | Publication Date |
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| CN211972038U true CN211972038U (en) | 2020-11-20 |
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| CN201821574127.4U Expired - Fee Related CN211972038U (en) | 2018-09-27 | 2018-09-27 | CNC waste water zero discharge system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112645502A (en) * | 2021-01-11 | 2021-04-13 | 丁洪军 | Zero release sewage filtration system |
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2018
- 2018-09-27 CN CN201821574127.4U patent/CN211972038U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112645502A (en) * | 2021-01-11 | 2021-04-13 | 丁洪军 | Zero release sewage filtration system |
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Granted publication date: 20201120 |