CN208038252U - A kind of waste water removes the device of COD - Google Patents
A kind of waste water removes the device of COD Download PDFInfo
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- CN208038252U CN208038252U CN201820110371.9U CN201820110371U CN208038252U CN 208038252 U CN208038252 U CN 208038252U CN 201820110371 U CN201820110371 U CN 201820110371U CN 208038252 U CN208038252 U CN 208038252U
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- waste water
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- tail gas
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- 239000002351 wastewater Substances 0.000 title claims abstract description 35
- 230000001590 oxidative effect Effects 0.000 claims abstract description 59
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 27
- 238000005273 aeration Methods 0.000 claims abstract description 20
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000010936 titanium Substances 0.000 claims abstract description 19
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000001179 sorption measurement Methods 0.000 claims abstract description 13
- 238000011049 filling Methods 0.000 claims abstract description 11
- 239000012528 membrane Substances 0.000 claims abstract description 11
- 239000003054 catalyst Substances 0.000 claims abstract description 8
- 241000876852 Scorias Species 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 229920005610 lignin Polymers 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 239000000835 fiber Substances 0.000 claims abstract description 5
- 238000007254 oxidation reaction Methods 0.000 claims description 9
- 230000003647 oxidation Effects 0.000 claims description 6
- 238000005276 aerator Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 4
- 238000004064 recycling Methods 0.000 claims description 2
- 239000003610 charcoal Substances 0.000 claims 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 10
- 238000012545 processing Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 4
- 239000010802 sludge Substances 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000010842 industrial wastewater Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 29
- 238000000034 method Methods 0.000 description 15
- 239000010865 sewage Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 5
- 239000005416 organic matter Substances 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000005446 dissolved organic matter Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- -1 hydroxyl radical free radical Chemical class 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000012510 hollow fiber Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 238000006385 ozonation reaction Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Landscapes
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The utility model is related to a kind of devices in industrial waste water purifying field, and in particular to remove the device of COD in a kind of waste water, including pass sequentially through the aerobic tank of pipeline connection, catalysis oxidizing tower, adsorption tower, biofilter.It is hollow-fibre membrane or flat film to have membrane bioreactor, film in the aerobic tank.Catalysis oxidizing tower includes oxidizing tower ontology, ozone generator, vacuum generator and tail gas breaking plant, and the oxidizing tower ontology includes layer 2-3 POROUS TITANIUM aeration board, water inlet, water outlet, air inlet, gas outlet；One layer of the POROUS TITANIUM aeration board is located at oxidizing tower body bottom portion, and other layers are located in the middle part of oxidizing tower ontology, and load thereon has catalyst.One or both of filling activated carbon, lignin, modified steel scoria in the adsorption tower.The utility model has the advantages that processing COD is with obvious effects, sludge yield is low.
Description
Technical field
The utility model is related to the devices that a kind of waste water removes COD, belong to industrial waste water purifying field of environment protection.
Background technology
Water resource environment protection be now social extensive concern the problem of.For a long time, people use different technologies and side
Method handles sewage.Common sewage water treatment method has three categories, physical treatment method, such as grid, filtering, precipitation, gas
Floating, reverse osmosis etc.；Chemical treatment method, such as electrolysis, redox, absorption, extraction；Bioremediation, such as activated sludge
Organic pollution in sludge is converted to innocuous substance by the methods of method, biofilm, microorganism decomposition.
Traditional chemical oxidization method is reacted the reasons such as selective, is tended not to directly reach due to energy of oxidation force difference
Full organics removal reduces the purpose of COD.Bioremediation is the current more and more common method of water pollution of processing.At biology
Logos is to digest the organic matter in waste water using bacterium, but the COD value for handling waste water is necessarily less than 1000mg/L, it is necessary to first dilute
Release and remove heavy metal ion, and if biological treatment it is not thorough enough to the processing of microorganism, it is poor to also result in effluent quality
The problems such as.Therefore, traditional chemical oxidization method and bioremediation are not increasingly that people receive.
Carrying out sewage disposal using existing sewage disposal technology, there are many drawbacks, for example, to the macromolecular in sewage
The processing of substance, it is either all more difficult using which kind of existing method processing.
The strong oxidizing property of ozone being capable of most of organic matter in oxidized waste water.There is catalyst strong adsorptivity, ozone to urge
Ozone utilization ratio can be greatly improved under the action of agent, improve the degradation effect of organic matter.Catalytic ozonation technology is most
Big advantage is that technique is relatively simple, reliable and secure, is substantially not present subsequent sludge treatment problem.
Utility model content
The utility model overcomes above-mentioned the deficiencies in the prior art, the device that COD is removed in a kind of waste water is provided, using we
Case goes out forwarding method, of low cost except COD is had excellent performance, and repeatability is high, can wide popularization and application.
The utility model is realized using following technical scheme：The device of COD is removed in a kind of waste water, including passes sequentially through pipeline
The aerobic tank of connection, catalysis oxidizing tower, adsorption tower, biofilter, the catalysis oxidizing tower can be 1-3, the catalysis oxygen
Serial or parallel connection setting can be carried out according to actual conditions by changing tower.
It is hollow-fibre membrane or flat film to have membrane bioreactor, film in the aerobic tank.
The catalysis oxidizing tower includes oxidizing tower ontology, ozone generator, vacuum generator and tail gas breaking plant；
The oxidizing tower ontology is connected by the air inlet of its bottom with ozone generator, and the oxidizing tower ontology passes through
Gas outlet at the top of it is connect with vacuum generator, and the vacuum generator is connect with device for recovering tail gas by pipeline, described
Device for recovering tail gas is connect with ozone generator；
The oxidizing tower body interior setting layer 2-3 POROUS TITANIUM aeration board, side wall upper part setting water inlet, lower sidewall are set
Set water outlet, sidewall bottom setting air inlet, top setting gas outlet；
One layer of the POROUS TITANIUM aeration board is located at oxidizing tower body bottom portion, and other layers are located in the middle part of oxidizing tower ontology, described
Load has catalyst on POROUS TITANIUM aeration board；
The tail gas of the device for recovering tail gas recycling can transport into ozone generator as unstripped gas.
One or both of filling activated carbon, lignin, modified steel scoria in the adsorption tower.
Aerator and filling biologic packing material are set in the biofilter.
Compared with prior art, the utility model has the beneficial effects that：
（1）The insoluble matter in waste water is detached using membrane separation technique in aerobic tank, reduces the pollutant concentration of waste water, into
Enter and contain only dissolved organic matter in the waste water of catalysis oxidizing tower, ozone can be completely used for the oxidation of organic matter, enhance
The specific aim of ozone improves ozone utilization rate, significantly reduces the usage amount of ozone.
（2）The ozone that ozone generator generates enters in oxidizing tower by POROUS TITANIUM aeration board, with waste water in reaction tower
Reaction completely, after fully oxidized, on the one hand, can the larger molecular organics in waste water be oxidized to small organic molecule；Another party
Face, the ozone after catalysis generate a large amount of hydroxyl radical free radical in waste water, can be by the organic pollution exhaustive oxidation in waste water
Carbon dioxide and water reduce pollution, effectively accomplish environmental protection and sustainable development, meanwhile, POROUS TITANIUM aeration board is for waste water
Preaeration has the function of preventing bulky grain from depositing, can further remove partial organic substances.Oxidizing tower is intake using top, bottom
The processing mode of portion's air inlet increases the time of contact of reactant so that reacts the more thorough of progress, improves the place of COD
Manage efficiency.Offgas outlet is located at reaction tower top, extends reaction time of the gas in reaction tower, and exhaust gas can pass through for a long time
Catalysis oxidation after be discharged again through top, improve working efficiency.
（3）The utility model catalysis oxidizing tower shortens stop of the ozone in tower using the structure design being repeatedly aerated
Time improves the utilization rate of ozone.In addition, graded oxidation reaction is carried out to the pollutant in waste water, it is stability is high, difficult to drop
The pollutant removal of solution falls, and to reduce catalyst amount, reduces the operating cost of wastewater treatment.
（4）The utility model catalysis oxidizing tower can be that one or more is arranged in parallel or series, can be according to practical feelings
Condition adjust, be suitable for it is various in the case of COD processing.
（5）One or both of filling activated carbon, lignin, modified steel scoria in adsorption tower, it is further adsorpting pigment, different
Taste, low raw-material cost, lignin can be extracted from black liquid, and modified steel scoria derives from steelmaking wastes, and raw material sources are wide
General, " treatment of wastes with processes of wastes against one another ", plays a good role to enhancement of environment.
（6）The utility model is simple in structure, easy to use, and carrying out biology, physics and chemistry for sewage is combined processing,
Tests prove that carrying out sewage disposal using the device has good COD removal rates, and it is of low cost, it is particularly suitable for promoting.
Description of the drawings
Fig. 1 is the schematic diagram of utility model device.
Fig. 2 is the schematic diagram of 1 catalysis oxidizing tower of the utility model embodiment.
In figure：1 is aerobic tank, and 2 be catalysis oxidizing tower, and 3 be adsorption tower, and 4 be biofilter, and 21 be oxidizing tower ontology, 22
It is vacuum generator for ozone generator, 23,24 be device for recovering tail gas, and 25 be air inlet, and 26 be gas outlet, and 27 be POROUS TITANIUM
Aeration board, 28 be water inlet, and 29 be water outlet.
Specific implementation mode
The utility model is described further with attached drawing with reference to embodiments：
Embodiment 1
As shown in Figure 1, removing the device of COD in a kind of waste water, including pass sequentially through the aerobic tank 1 of pipeline connection, catalysis oxygen
Change tower 2, adsorption tower 3, biofilter 4, the catalysis oxidizing tower 2 can be 1.
It is hollow-fibre membrane or flat film to have membrane bioreactor, film in the aerobic tank 1.
Shown in as shown in Figure 2, the catalysis oxidizing tower 2 includes oxidizing tower ontology 21, ozone generator 22, vacuum generator
23 and device for recovering tail gas 24；
The oxidizing tower ontology 21 is connected by the air inlet 25 of its bottom with ozone generator 22, the oxidizing tower sheet
Body 21 is connect by the gas outlet 26 at the top of it with vacuum generator 23, and the vacuum generator 23 is logical with device for recovering tail gas 24
Piping connects, and the device for recovering tail gas 24 is connect with ozone generator 22；
Under 21 3 layers of POROUS TITANIUM aeration board 27 of inside setting of the oxidizing tower ontology, side wall upper part setting water inlet 28, side wall
Water outlet 29, sidewall bottom setting air inlet 25, top setting gas outlet 26 is arranged in portion；
27 1 layers of the POROUS TITANIUM aeration board is located at 21 bottom of oxidizing tower ontology, and other layers are located in oxidizing tower ontology 21
Portion, on the POROUS TITANIUM aeration board 27 load have catalyst；
The tail gas that the device for recovering tail gas 24 recycles can transport is used as unstripped gas into ozone generator 22.
One or both of filling activated carbon, lignin, modified steel scoria in the adsorption tower 3.
Setting aerator and filling biologic packing material in the biofilter 4.
In practice, waste water enters aerobic tank 1, and waste water is flat by submerged hollow fiber membrane or immersion in aerobic tank 1
After plate film process, the insoluble matter in waste water is detached, and the pollutant concentration of waste water substantially reduces, into the useless of catalysis oxidizing tower 2
Dissolved organic matter is contained only in water.
The waste water come out from aerobic tank 1 enters catalysis oxidizing tower 2 and carries out oxidation processes.Waste water is at the top of oxidizing tower ontology 21
Into, while ozone is entered by air inlet 25 in the POROUS TITANIUM aeration board 27 of 21 bottom of oxidizing tower ontology, is occurred in vacuum
Under the action of device 23, negative pressure is generated in oxidizing tower ontology 21, ozone can be in 21 moved upward inside of oxidizing tower ontology；By adjusting
Pressure index can adjust the dosage of ozone, at this point, the catalyst that waste water is loaded with ozone and POROUS TITANIUM aeration board 27
The hydroxyl radical free radical gone out meets in oxidizing tower ontology 21, is sufficiently mixed fast reaction, effectively handles COD, makes most of difficulty
The organic matter chain rupture of degradation is simultaneously finally oxidized to CO2And H2O and intermediate state product, and waste water is filtered.
When the waste water of a catalysis oxidizing tower 2 processing does not reach requirement, multiple catalysis oxidizing towers 2 can be added, into one
Step enhancing treatment effect.
The water outlet of catalysis oxidizing tower 2 enters adsorption tower 3 by the way of high in and low out, further adsorbs the pollution in waste water
Object, coloration and peculiar smell, ensureing that production is aqueous can stablize.
Waste water after adsorption tower 3 adsorbs enters biofilter 4, and pipeline is connected to biofilter 4, in aeration effect and filter
Under the filtering for filling filler in pond, remaining pollutant continues to remove in sewage.The COD average values after the utility model is handled
20mg/L reaches first discharge standard hereinafter, removal rate reaches 90% or more.
Embodiment 2
The device of COD is removed in a kind of waste water, including passes sequentially through the aerobic tank 1 of pipeline connection, catalysis oxidizing tower 2, absorption
Tower 3, biofilter 4, the catalysis oxidizing tower 2 can be 3, can be that serial or parallel connection is arranged.
It is hollow-fibre membrane or flat film to have membrane bioreactor, film in the aerobic tank 1.
Shown in as shown in Figure 2, the catalysis oxidizing tower 2 includes oxidizing tower ontology 21, ozone generator 22, vacuum generator
23 and device for recovering tail gas 24；
The oxidizing tower ontology 21 is connected by the air inlet 25 of its bottom with ozone generator 22, the oxidizing tower sheet
Body 21 is connect by the gas outlet 26 at the top of it with vacuum generator 23, and the vacuum generator 23 is logical with device for recovering tail gas 24
Piping connects, and the device for recovering tail gas 24 is connect with ozone generator 22；
Under 21 2 layers of POROUS TITANIUM aeration board 27 of inside setting of the oxidizing tower ontology, side wall upper part setting water inlet 28, side wall
Water outlet 29, sidewall bottom setting air inlet 25, top setting gas outlet 26 is arranged in portion；
27 1 layers of the POROUS TITANIUM aeration board is located at 21 bottom of oxidizing tower ontology, and other layers are located in oxidizing tower ontology 21
Portion, on the POROUS TITANIUM aeration board 27 load have catalyst；
The tail gas that the device for recovering tail gas 24 recycles can transport is used as unstripped gas into ozone generator 22.
One or both of filling activated carbon, lignin, modified steel scoria in the adsorption tower 3.
Setting aerator and filling biologic packing material in the biofilter 4.
Basic principles, main features, and advantages of the present invention has been shown and described above, retouches
State more specific and detailed, but it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that
For those of ordinary skill in the art, without departing from the concept of the premise utility, several changes can also be made
Shape and improvement, these belong to the scope of protection of the utility model.
Claims (4)
1. a kind of waste water removes the device of COD, which is characterized in that the aerobic tank including passing sequentially through pipeline connection（1）, catalysis oxidation
Tower（2）, adsorption tower（3）, biofilter（4）, the catalysis oxidizing tower（2）It is 1-3, is arranged for serial or parallel connection；
The catalysis oxidizing tower（2）Including oxidizing tower ontology（21）, ozone generator（22）, vacuum generator（23）It is returned with tail gas
Receiving apparatus（24）；
The oxidizing tower ontology（21）Pass through the air inlet of its bottom（35）With ozone generator（22）It is connected, the oxidizing tower
Ontology（21）Pass through the gas outlet at the top of it（26）With vacuum generator（23）Connection, the vacuum generator（23）It is returned with tail gas
Receiving apparatus（24）It is connected by pipeline, the device for recovering tail gas（24）With ozone generator（22）Connection；
The oxidizing tower ontology（21）Inside setting layer 2-3 POROUS TITANIUM aeration board（27）, side wall upper part be arranged water inlet（28）, side
Water outlet is arranged in wall lower part（29）, sidewall bottom be arranged air inlet（25）, top be arranged gas outlet（26）；
The POROUS TITANIUM aeration board（27）One layer is located at oxidizing tower ontology（21）Bottom, other layers are located at oxidizing tower ontology（21）In
Portion, the POROUS TITANIUM aeration board（27）Upper load has catalyst；
The device for recovering tail gas（24）The tail gas of recycling is conveyed into ozone generator（22）As unstripped gas.
2. a kind of waste water according to claim 1 removes the device of COD, which is characterized in that the aerobic tank（1）It is interior that there is film
Bioreactor, film are hollow-fibre membrane or flat film.
3. a kind of waste water according to claim 1 removes the device of COD, which is characterized in that the adsorption tower（3）Interior filling is lived
One or both of property charcoal, lignin, modified steel scoria.
4. a kind of waste water according to claim 1 removes the device of COD, which is characterized in that the biofilter（4）Interior setting
Aerator and filling biologic packing material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820110371.9U CN208038252U (en) | 2018-01-23 | 2018-01-23 | A kind of waste water removes the device of COD |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820110371.9U CN208038252U (en) | 2018-01-23 | 2018-01-23 | A kind of waste water removes the device of COD |
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| Publication Number | Publication Date |
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| CN208038252U true CN208038252U (en) | 2018-11-02 |
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| CN201820110371.9U Active CN208038252U (en) | 2018-01-23 | 2018-01-23 | A kind of waste water removes the device of COD |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110002667A (en) * | 2019-03-28 | 2019-07-12 | 知合环境（北京）有限责任公司 | A kind of processing system and method for black and odorous water |
| CN111204919A (en) * | 2018-11-21 | 2020-05-29 | 南裕催化有限公司 | Wastewater treatment system and method using catalyst |
| CN113860596A (en) * | 2021-11-22 | 2021-12-31 | 安庆师范大学 | Device for treating wastewater by using electro-catalysis method |
-
2018
- 2018-01-23 CN CN201820110371.9U patent/CN208038252U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111204919A (en) * | 2018-11-21 | 2020-05-29 | 南裕催化有限公司 | Wastewater treatment system and method using catalyst |
| TWI695816B (en) * | 2018-11-21 | 2020-06-11 | 南裕催化有限公司 | Wastewater treatment system and method using catalyst |
| CN111204919B (en) * | 2018-11-21 | 2022-07-01 | 南裕催化有限公司 | Wastewater treatment system and method using catalyst |
| CN110002667A (en) * | 2019-03-28 | 2019-07-12 | 知合环境（北京）有限责任公司 | A kind of processing system and method for black and odorous water |
| CN113860596A (en) * | 2021-11-22 | 2021-12-31 | 安庆师范大学 | Device for treating wastewater by using electro-catalysis method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A device for removing COD from wastewater Effective date of registration: 20220914 Granted publication date: 20181102 Pledgee: Postal Savings Bank of China Co.,Ltd. Jincheng Branch Pledgor: SHANXI LYUJIE ENVIRONMENTAL PROTECTION CO.,LTD. Registration number: Y2022140000051 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231017 Granted publication date: 20181102 Pledgee: Postal Savings Bank of China Co.,Ltd. Jincheng Branch Pledgor: SHANXI LYUJIE ENVIRONMENTAL PROTECTION CO.,LTD. Registration number: Y2022140000051 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A device for removing COD from wastewater Granted publication date: 20181102 Pledgee: Postal Savings Bank of China Co.,Ltd. Jincheng Branch Pledgor: SHANXI LYUJIE ENVIRONMENTAL PROTECTION CO.,LTD. Registration number: Y2024980003445 |