CN105540753A - Sewage degrading and purifying device - Google Patents
Sewage degrading and purifying device Download PDFInfo
- Publication number
- CN105540753A CN105540753A CN201610043548.3A CN201610043548A CN105540753A CN 105540753 A CN105540753 A CN 105540753A CN 201610043548 A CN201610043548 A CN 201610043548A CN 105540753 A CN105540753 A CN 105540753A
- Authority
- CN
- China
- Prior art keywords
- reaction vessel
- electrode
- sewage
- zeolite granular
- dispenser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000010865 sewage Substances 0.000 title claims abstract description 23
- 230000000593 degrading effect Effects 0.000 title abstract 2
- 238000006243 chemical reaction Methods 0.000 claims abstract description 48
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 10
- 230000003647 oxidation Effects 0.000 claims abstract description 9
- 229910021536 Zeolite Inorganic materials 0.000 claims description 18
- 239000010457 zeolite Substances 0.000 claims description 18
- 238000007670 refining Methods 0.000 claims description 6
- 230000003197 catalytic effect Effects 0.000 claims description 5
- 238000000746 purification Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 12
- 238000000034 method Methods 0.000 description 12
- 239000007788 liquid Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000005868 electrolysis reaction Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- -1 hydroxyl radical free radical Chemical class 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011197 physicochemical method Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 230000003442 weekly effect Effects 0.000 description 1
Classifications
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
- C02F1/46114—Electrodes in particulate form or with conductive and/or non conductive particles between them
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
- C02F2001/46133—Electrodes characterised by the material
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
- C02F2001/46152—Electrodes characterised by the shape or form
- C02F2001/46157—Perforated or foraminous electrodes
- C02F2001/46161—Porous electrodes
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention provides a sewage degrading and purifying device which comprises a reaction vessel and power sources; the reaction vessel purifies sewage through electrocatalytic oxidation, and the power sources are used for supplying electric currents to the reaction vessel; the bottom of the reaction vessel is provided with a water inlet, the top is provided with a water outlet, and the interior of the reaction vessel is provided with a plurality of positive electrodes and a plurality of negative electrodes; the device further comprises a dispenser set of zeolite particles, and the zeolite particles are used for serving as a third electrode of the reaction vessel; more zeolite particles are put to the region, closer to the bottom, of the reaction vessel by the dispenser set.
Description
Technical field
The present invention relates to water treatment field, especially relate to sewage degraded refining plant.
Background technology
China is the country of a little Chemical Manufacture prosperity, and Chemicals kind is many, the complex process related to, and sewage is large containing inorganic, organic salt volume, and processing this kind of sewage just must by the treatment process of various combination.The current organic chemical industry of China produces dispersion, is again little Chemical Manufacture, therefore causes sewage to disperse, and is unfavorable for process.
People are through long-term endeavour, establish the technology of many purifying waste water processings, conventional has Physical, chemical method, biological process etc., and these methods respectively have its relative merits, mostly thoroughly, does not easily cause secondary pollution to contaminant degradation, facility investment is large, process cost is excessively high.
Catalyzed oxidation high-level oxidation technology is the new technology that water treatment field is risen, and the pollutent in sewage is direct oxidation into inorganics by chemical or physicochemical method by it, or is translated into the intermediate product of readily biodegradable of low toxicity.Catalytic and oxidative electrolysis technology method is a kind of sewage water treatment method improved on the basis of electrolysis process, and this method achieves good effect for some unmanageable sewage.Catalytic and oxidative electrolysis technology method has: the features such as electricity flocculation, electro-flotation, oxidation, catalysis and the polar molecule effect under current field condition.
In the patent of invention of 201010563370.8, propose a kind of three-diemsnional electrode electrocatalysis oxidation reaction device for degradation of sewage, it by arranging the positive and negative electrode of cross parallel in reaction vessel, using the zeolite granular in liquid as third electrode; During work, positive and negative electrode obtains electric energy, zeolite granular plays granule electrode effect and plays ion transformation and makes to produce a large amount of OH hydroxyl radical free radical ions in electrode weekly form and liquid, thus carries out catalyzed oxidation to the pollutent of sewage, reaches the object of environmental protection water purification.But in the invention, the parallel placement of different layers positive and negative electrode, gap is comparatively large, for the liquid catalyst reaction between different layers electrode not, affects decontamination effect improving.
Summary of the invention
As one aspect of the present invention, provide a kind of sewage degraded refining plant, comprise reaction vessel and power supply; Described reaction vessel is by catalytic oxidation by sewage purification, and described power supply is used for providing electric current to described reaction vessel; Described reaction container bottom sets into the mouth of a river, and top sets out the mouth of a river, and inside is provided with multiple positive electrode and multiple auxiliary electrode; Wherein, described positive electrode and described auxiliary electrode and horizontal plane have certain degree.
Preferably, described power supply comprises to the first power supply of reaction vessel left end electrode power supply and to the second source of reaction vessel right-hand member electrode power supply, described multiple positive electrode and described multiple negative potential are divided into left and right two arrays of electrodes, the angle of one group, wherein said left side electrode and horizontal plane is the first angle, and the angle of one group, described the right electrode and horizontal plane is the second angle.
Preferably, described first angle and the second angle are respectively between 30 degree to 60 degree.
Preferably, described first angle is different with the angle of the second angle.
Preferably, the positive and negative electrode of the one group of electrode in the described left side crosses one another; The positive and negative electrode of the one group of electrode in described the right crosses one another.
Preferably, one group, described left side electrode comprises multi-layered electrode, and one group, described the right electrode comprises multi-layered electrode.
Preferably, left side conducting plates is set, right side conductive plate, the first middle conducting plates and the second middle conducting plates in described reaction vessel; Described left side conducting plates is arc, and it connects the first power cathode by the first conducting wire; Described right side conductive plate is arc, and it connects second source positive pole by the second conducting wire; Described first middle conducting plates is rectangle, and it connects the first positive source by the 3rd conducting wire; Described second middle conducting plates is rectangle, and it connects second source negative pole by the 4th conducting wire.
Preferably, there is zeolite granular for as third electrode in the liquid within described reaction vessel.
Preferably, the dispenser throwing in zeolite granular is also comprised.
Preferably, the zeolite granular content thrown at the different depths of described reaction vessel of described dispenser is different.
Preferably, the zeolite granular thrown in the closer to the region of bottom at described reaction vessel of described dispenser is more.
Preferably, described dispenser comprises the fluid container of zeolite granular, described fluid container has different water outlets at the different depths of described reaction vessel, for the zeolite granular in described fluid container is sent to described reaction vessel, described water outlet is larger at the region openings the closer to reaction container bottom.
Preferably, described multiple positive electrode and multiple auxiliary electrode more intensive in the region the closer to reaction container bottom.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of embodiments of the invention.
Fig. 2 is the vertical view of the electrode group of embodiments of the invention.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, and below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
See Fig. 1, sewage degraded refining plant of the present invention, comprises reaction vessel 100, first power supply 201 and second source 202.Reaction vessel 100 uses zeolite granular as third electrode, by catalytic oxidation by sewage purification.Reaction vessel 100 comprises shell 110, be sticked shell 110 inwall insulation inwall 120 and the lid 130 covering and be connected on shell 110 can be installed and removed.Set into the mouth of a river bottom reaction vessel 100, use waste pipe 190 to access sewage, top sets out the mouth of a river 150, and inside is provided with multiple left end electrode group 310 and multiple right-hand member electrode group 320.Be provided with a Butterworth Hatch bottom the shell 110 of reaction vessel 100, Butterworth Hatch place is equiped with a cleaning dirt valve 140, and time for components and parts in clean container, the liquid after cleaning is discharged by cleaning dirt valve 140.Reaction vessel 100 arranges recycle pump, and the water bottom reaction vessel 100 is evacuated to top by circulation tube 170 and to undershoot by it, thus the liquid fully in circulation stirring container, be suspended in liquid to make three-diemsnional electrode uniform particle.
See Fig. 1, multiple left end electrode group 310 and multiple right-hand member electrode group 320 comprise the parallel electrode group of many groups, wherein left end electrode group 310 and left end electrode group 320 have a special angle respectively with horizontal plane, this special angle can be set between 30 degree to 60 degree, preferably, 45 degree can be set to.By such setting, make the different heights in reaction vessel 100 all have positive and negative electrode, thus add the efficiency of catalyzed reaction, improve purifying property.
See Fig. 2, left side conducting plates 330 is set in reaction vessel 100, right side conductive plate 340, first middle conducting plates 350 and the second middle conducting plates 360.Left side conducting plates 330 is arc, and it connects the first power cathode by the first conducting wire 370; Right side conductive plate 340 is arc, and it connects second source positive pole by the second conducting wire 380; First middle conducting plates 350 is rectangle, and it connects the first positive source by the 3rd conducting wire 371; Second middle conducting plates 360 is rectangle, and it connects second source negative pole by the 4th conducting wire 381.Wherein, the intersection parallel to each other of the positive and negative electrode in left electrodes; The positive and negative electrode intersection parallel to each other of right electrodes.Preferably, in order to fixed electorde, the fixed link of fixing positive and negative electrode can be set in reaction vessel 100.
In technique scheme, there is zeolite granular for as third electrode in the liquid within reaction vessel 100.Preferably, the dispenser for throwing in zeolite granular can also be set.Because the sewage of reaction vessel 100 is entered by the water-in being positioned at bottom, flow out from the water outlet 150 being positioned at top, at different depths, the degree of purification of sewage is different.Therefore, the zeolite granular content that described dispenser is thrown at the different depths of described reaction vessel can be set to difference.Preferably, the zeolite granular thrown in the closer to the region of bottom at described reaction vessel of described dispenser is more.Further preferred, can described multiple positive electrode and multiple auxiliary electrode arranged more intensive the closer to the region of reaction container bottom.
Above-mentioned dispenser can be set to the fluid container comprising zeolite granular, described fluid container has different water outlets at the different depths of described reaction vessel, for the zeolite granular in described fluid container is sent to described reaction vessel, described water outlet is larger at the region openings the closer to reaction container bottom.
Certainly; the present invention also can have other various embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art can make various corresponding change and distortion according to the present invention, but these change accordingly and are out of shape the protection domain that all should belong to the claims in the present invention.
Claims (2)
1. a sewage degraded refining plant, comprises reaction vessel and power supply; Described reaction vessel is by catalytic oxidation by sewage purification, and described power supply is used for providing electric current to described reaction vessel; Described reaction container bottom sets into the mouth of a river, and top sets out the mouth of a river, and inside is provided with multiple positive electrode and multiple auxiliary electrode; The dispenser of zeolite granular, described zeolite granular is used for as reaction vessel third electrode; The zeolite granular that described dispenser is thrown in the closer to the region of bottom at described reaction vessel is more.
2. sewage according to claim 1 degraded refining plant, is characterized in that: described multiple positive electrode and multiple auxiliary electrode more intensive in the region the closer to reaction container bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610043548.3A CN105540753B (en) | 2015-01-30 | 2015-01-30 | A kind of sewage degradation purifier |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510048624.5A CN104591350B (en) | 2015-01-30 | 2015-01-30 | A kind of sewage environment friendly purification apparatus |
| CN201610043548.3A CN105540753B (en) | 2015-01-30 | 2015-01-30 | A kind of sewage degradation purifier |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510048624.5A Division CN104591350B (en) | 2015-01-30 | 2015-01-30 | A kind of sewage environment friendly purification apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105540753A true CN105540753A (en) | 2016-05-04 |
| CN105540753B CN105540753B (en) | 2018-09-21 |
Family
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610043548.3A Active CN105540753B (en) | 2015-01-30 | 2015-01-30 | A kind of sewage degradation purifier |
| CN201510048624.5A Active CN104591350B (en) | 2015-01-30 | 2015-01-30 | A kind of sewage environment friendly purification apparatus |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510048624.5A Active CN104591350B (en) | 2015-01-30 | 2015-01-30 | A kind of sewage environment friendly purification apparatus |
Country Status (1)
| Country | Link |
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| CN (2) | CN105540753B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2579523B (en) * | 2017-08-31 | 2023-05-17 | Chevron Usa Inc | Devices and methods for the remediation of groundwater |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0152150B1 (en) * | 1995-08-31 | 1998-10-01 | 김광호 | Water purifier |
| CN101125695A (en) * | 2007-08-03 | 2008-02-20 | 重庆大学 | Pulse electric floatation generating method and generating device thereof |
| CN201882957U (en) * | 2010-11-26 | 2011-06-29 | 方明环保科技(漳州)有限公司 | Electro-catalysis oxidation reactor |
| CN202175582U (en) * | 2011-08-18 | 2012-03-28 | 武汉钢铁(集团)公司 | Three-dimensional electrode reactor |
| CN102887571A (en) * | 2010-11-26 | 2013-01-23 | 方明环保科技(漳州)有限公司 | Three-dimensional electrode electro-catalytic oxidation reactor for degrading sewage |
| CN104203836A (en) * | 2012-03-28 | 2014-12-10 | 大金工业株式会社 | Electrolysis device and temperature-adjusting water-supplying machine provided with same |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02222771A (en) * | 1989-02-22 | 1990-09-05 | Penta Ocean Constr Co Ltd | Sewage purifying device by electrolysis |
| JPH0474879A (en) * | 1990-07-16 | 1992-03-10 | Permelec Electrode Ltd | Electrolytic device for producing hypochlorite |
| CN1153736C (en) * | 2000-11-17 | 2004-06-16 | 中国科学院生态环境研究中心 | Catalytic electrolytic waste water treatment equipment |
| JP2002263648A (en) * | 2001-03-06 | 2002-09-17 | Sanyo Electric Co Ltd | Electrolytic treating tank for sewage treating device |
| CN101549897A (en) * | 2008-12-30 | 2009-10-07 | 中冶赛迪工程技术股份有限公司 | Electrolytic gas float wastewater treatment device |
| CN102101707B (en) * | 2010-11-26 | 2012-10-03 | 方明环保科技(漳州)有限公司 | Three-dimensional electrode electro-catalytic oxidation reactor for degrading sewage |
| CN203715341U (en) * | 2014-02-24 | 2014-07-16 | 诚恳 | Skew plate electrofloatation oil water separating device |
-
2015
- 2015-01-30 CN CN201610043548.3A patent/CN105540753B/en active Active
- 2015-01-30 CN CN201510048624.5A patent/CN104591350B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0152150B1 (en) * | 1995-08-31 | 1998-10-01 | 김광호 | Water purifier |
| CN101125695A (en) * | 2007-08-03 | 2008-02-20 | 重庆大学 | Pulse electric floatation generating method and generating device thereof |
| CN201882957U (en) * | 2010-11-26 | 2011-06-29 | 方明环保科技(漳州)有限公司 | Electro-catalysis oxidation reactor |
| CN102887571A (en) * | 2010-11-26 | 2013-01-23 | 方明环保科技(漳州)有限公司 | Three-dimensional electrode electro-catalytic oxidation reactor for degrading sewage |
| CN202175582U (en) * | 2011-08-18 | 2012-03-28 | 武汉钢铁(集团)公司 | Three-dimensional electrode reactor |
| CN104203836A (en) * | 2012-03-28 | 2014-12-10 | 大金工业株式会社 | Electrolysis device and temperature-adjusting water-supplying machine provided with same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105540753B (en) | 2018-09-21 |
| CN104591350B (en) | 2016-08-24 |
| CN104591350A (en) | 2015-05-06 |
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Effective date of registration: 20180813 Address after: 414000 building 125, building B, building material market, Sun Bridge, Yueyang economic and Technological Development Zone, Hunan, China, 3 Applicant after: Hunan Zhong FA Environmental Protection Technology Co., Ltd. Address before: 050090 No. 369 xinshizhong Road, Qiaoxi District, Shijiazhuang, Hebei Applicant before: Jiang Cuizhen |
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Effective date of registration: 20200304 Address after: 414000 Yueyang, Hunan economic and Technological Development Zone, Tonghai Road, sun bridge building materials market 8, 23-29 facade. Patentee after: Hunan Katie Engineering Technology Co., Ltd. Address before: 414000 building 125, building B, building material market, Sun Bridge, Yueyang economic and Technological Development Zone, Hunan, China, 3 Patentee before: Hunan Zhong FA Environmental Protection Technology Co., Ltd. |