CN201746400U - Depth treatment system for reclaimed water recycling - Google Patents
Depth treatment system for reclaimed water recycling Download PDFInfo
- Publication number
- CN201746400U CN201746400U CN2010202569071U CN201020256907U CN201746400U CN 201746400 U CN201746400 U CN 201746400U CN 2010202569071 U CN2010202569071 U CN 2010202569071U CN 201020256907 U CN201020256907 U CN 201020256907U CN 201746400 U CN201746400 U CN 201746400U
- Authority
- CN
- China
- Prior art keywords
- reverse osmosis
- treatment system
- water
- osmosis device
- water pump
- 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.)
- Expired - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 238000004064 recycling Methods 0.000 title abstract 3
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 47
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 22
- 238000004140 cleaning Methods 0.000 claims abstract description 13
- 239000000126 substance Substances 0.000 claims description 14
- 150000002500 ions Chemical class 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 239000006004 Quartz sand Substances 0.000 claims description 4
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 claims description 4
- 239000003830 anthracite Substances 0.000 claims description 4
- 239000003245 coal Substances 0.000 claims description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000011707 mineral Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000002253 acid Substances 0.000 abstract description 5
- 230000008676 import Effects 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 101150006257 rig-4 gene Proteins 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 230000002829 reductive effect Effects 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 239000012267 brine Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229960001866 silicon dioxide Drugs 0.000 description 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 235000019600 saltiness Nutrition 0.000 description 1
- 239000002455 scale inhibitor Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Images
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model relates to a depth treatment system for reclaimed water recycling, belonging to the mechanical equipment class. The depth treatment system consists of a multi-medium filter, an ultrafiltration lift pump, a self-cleaning filter, a heat exchange device, an ultrafiltration device, a primary reverse osmosis lift pump, a primary reverse osmosis device, a secondary reverse osmosis lift pump, a secondary reverse osmosis device, a mixed bed lift pump and a mixed bed which are orderly connected by pipes in series. The depth treatment system for reclaimed water recycling achieves the purpose for applying a low-altitude water source to high-altitude users, ensures safe, reliable and energy-saving system running to a maximum extent, largely reduces the secondary pollution of acid and base to environments and reduces worker work intensity.
Description
Technical field
The utility model relates to and is used for High Temperature High Pressure unit boiler compensating water system in the iron and steel enterprise after the water reuse advanced treatment, belongs to the mechanical means class.
Background technology
Iron and steel enterprise is the water rich and influential family in the industrial enterprise, be to reduce a ton steel water consumption index, and each iron and steel enterprise all is devoted to collection and treatment and a mouthful waste water is always arranged in reuse, with it as main energy-saving and emission-reduction mode.But reuse waste water or qualified discharge after handling, or as low end subscriber water are limited to reducing ton molten steel consumption index, therefore, reuse water carried out advanced treatment after, become new problem as the high-end user water.Yet, passed through the reuse water after coagulation, precipitation, clarification, the filtration treatment, its water quality has characteristics such as saltiness height, COD content height and change of water quality be frequent, and is similar to the such high-end user of High Temperature High Pressure unit except to the water quality requirement height, also requires stable effluent quality; Traditional single ion exchange water treatment technique capacity of resisting impact load is poor, if change of water quality is big, then the regeneration period is lacked soda acid consumption height; And inevitably there is a problem such as discharging, soda acid pollution of the acidic and alkaline waste water of supersalinity; Qualified, stable water flow quality that single Reverse Osmosis Water Treatment Technology can not be guaranteed.
Summary of the invention
At above-mentioned existing problems and deficiency, the purpose of this utility model is intended to propose a kind of water reuse advanced treatment system in the iron and steel enterprise that is applied to, and system can provide efficiently, reliably and be applied to High Temperature High Pressure unit boiler supplementary feed.
For achieving the above object, technical solution of the present utility model is:
Middle water reuse advanced treatment system, advanced treatment system is connected in series through pipeline according to the order of sequence and is constituted by more medium filter, ultrafiltration lifting water pump, self-cleaning filter, heat-exchanger rig, ultra-filtration equipment, first-stage reverse osmosis lifting water pump, first-stage reverse osmosis device, two-pass reverse osmosis lifting water pump, two-pass reverse osmosis device, a mixed bed lifting water pump, mixed ion exchanger, and the first-stage reverse osmosis device also is provided with small transfer line and is connected to preposition more medium filter through backwash water tank, backwash water pump.
Filter material layer in the described preposition more medium filter is anthracite coal measure, quartz sand layer, heavy mineral layer.
The ingress of described first-stage reverse osmosis device is provided with the double feed inlet chemicals dosing plant.
The ingress of described two-pass reverse osmosis device is provided with chemicals dosing plant.
Owing to adopted above technical scheme, the preposition pretreatment system of advanced treatment system of the present utility model has adopted more medium filter, self-cleaning filter, macrobead suspended substance, the above particulate matter of 100 μ m be can remove respectively, thereby the security and the reliability of the operation of subsequent ultrafiltration device improved greatly; Ultra-filtration equipment can remove bacterium, microorganism, germ and the organism colloid of 0.002～0.100 μ m in the former water, has guaranteed the reverse osmosis system safe operation; The setting of two steps ro device except the safe reliability of increase system operation, has alleviated the operating load of mixed ion exchanger to a great extent, has reduced the regeneration frequency of hybrid ionic device, reduces the soda acid consumption, reduces second environmental pollution.More medium filter+self-cleaning filter+ultrafiltration+two steps ro+the operational mode of hybrid ionic device has increased the capacity of resisting impact load of system to a great extent, and is particularly suitable to water quality situation complexity, water source that the saliferous rate is high.The recycle of first-stage reverse osmosis strong brine has reduced the waste to former water, has also reduced running costs such as system energy consumption, medicine consumption simultaneously.
The mixed ion exchanger water outlet can not be subjected to the influence of the fluctuation of influent quality, stable effluent quality, water outlet quality height, specific conductivity is less than 0.2 μ s/cm, silicon-dioxide satisfies High Temperature High Pressure parameter (9.8MPa, 540 ℃) unit to the boiler feedwater requirements in water quality less than 20 μ g/l.
Water reuse advanced treatment system has realized that the low side water source is used for the target of high-end user in of the present utility model, safe, reliable, the energy-saving run of system have been guaranteed simultaneously to greatest extent, greatly reduce the acid base pair second environmental pollution simultaneously, reduced working strength of workers.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail:
Middle water reuse advanced treatment system, advanced treatment system is connected in series through pipeline according to the order of sequence and is constituted by more medium filter 1, ultrafiltration lifting water pump 2, self-cleaning filter 3, heat-exchanger rig 4, ultra-filtration equipment 5, first-stage reverse osmosis lifting water pump 6, first-stage reverse osmosis device 7, two-pass reverse osmosis lifting water pump 8, two-pass reverse osmosis device 9, mixed a lifting water pump 10, mixed ion exchanger 11.
Be the import of the outlet of more medium filter 1 by pipe connection ultrafiltration lifting water pump 2, it is the filtrate of anthracite coal measure, quartz sand layer, heavy mineral layer that filter material layer is arranged in more medium filter 1, also is provided with chemicals dosing plant on the more medium filter 1.Ultrafiltration promotes the import of the outlet of water pump 2 by pipe connection self-cleaning filter 3, the outlet of self-cleaning filter 3 is by the import of pipe connection heat-exchanger rig 4, the outlet of heat-exchanger rig 4 is by the import of pipe connection ultra-filtration equipment 5, the outlet of ultra-filtration equipment 5 promotes the import of water pump 6 by the pipe connection first-stage reverse osmosis, first-stage reverse osmosis promotes the import of the outlet of water pump 6 by pipe connection first-stage reverse osmosis device 7, ingress at first-stage reverse osmosis device 7 is provided with the double feed inlet chemicals dosing plant, water outlet on the first-stage reverse osmosis device 7 is by the import of pipe connection two-pass reverse osmosis lifting water pump 8, and the dense water out on the first-stage reverse osmosis device 7 is connected to more medium filter 1 by pipeline through backwash water tank 13 and backwash water pump 12.Two-pass reverse osmosis promotes the import of the outlet of water pump 8 by pipe connection two-pass reverse osmosis device 9, ingress at two-pass reverse osmosis device 9 is provided with chemicals dosing plant, the outlet of two-pass reverse osmosis device 9 mixes an import of lifting water pump 10 by pipe connection, mixes the import of the outlet of bed lifting water pump 10 by pipe connection mixed ion exchanger 11.
The principle of work of water reuse advanced treatment system in of the present utility model:
Former water (the middle water after sewage work handles) enters described more medium filter 1 by pipeline, more medium filter female pipe of intaking is provided with the flocculation agent chemicals dosing plant, under the effect of anthracite coal measure, quartz sand layer, three filter material layer of heavy mineral layer and medicine, at utmost remove large granular impurity such as suspended substance in the water, alleviate the operating load of ultra-filtration equipment; The product water of more medium filter 1 promotes water pump 2 by ultrafiltration and enters into self-cleaning filter 3, and the filtering accuracy that guarantees former water is guaranteed the safe reliability of ultrafiltration membrane elements less than 100 μ m.Self-cleaning filter 3, heat-exchanger rig 4 are provided with bypass duct, under self-cleaning filter 3 and heat-exchanger rig 4 break down situation, guarantee that system moves continuously; The sterilant chemicals dosing plant is set to remove microorganism mushroom in the former water on heat-exchanger rig 4 outlet conduits, former water after self-cleaning filter 3 and heat-exchanger rig 4 processing enters ultra-filtration equipment 5, make ultra-filtration equipment produce the SDI value of water less than 3, filtered water after the ultrafiltration membrane elements effect promotes water pump 6 through first-stage reverse osmosis and enters first-stage reverse osmosis device 7, add reductive agent and Scale inhibitors respectively by the double feed inlet chemicals dosing plant, regulate the dosage of chemicals dosing plant and concentration to prevent the pollution fouling of reverse osmosis unit membrane element according to flooding quantity, prolong the work-ing life of membrane element.The de-mineralized water that filtered water forms by first-stage reverse osmosis device 7 backs promotes water pump 8 through water outlet through two-pass reverse osmosis and enters two-pass reverse osmosis device 9, filtered water enters more medium filter 1 through dense water out through backwash water tank 12 and backwash water pump 13 by the strong brine that first-stage reverse osmosis device 7 forms, and is used to clean the filtrate of more medium filter 1.According to the quality that enters two-pass reverse osmosis device 9 import de-mineralized waters, add the carbonic acid gas that sodium hydroxide is used for removing de-mineralized water by chemicals dosing plant, the de-mineralized water that forms after two-pass reverse osmosis device 9 is handled enters mixed ion exchanger 11 through mixing bed lifting water pump 10, remove all remaining in de-mineralized water yin, yang ions by the yin, yang hybrid resin in the mixed ion exchanger 11, form the smart de-salted water that uses for the High Temperature High Pressure unit boiler.Smart de-salted water specific conductivity is less than 0.2 μ s/cm, and silicon-dioxide satisfies High Temperature High Pressure parameter (9.8MPa, 540 ℃) unit to the boiler feedwater requirements in water quality less than 20 μ g/l.
Claims (4)
1. middle water reuse advanced treatment system, comprise preposition more medium filter (1), self-cleaning filter (3), heat-exchanger rig (4), ultra-filtration equipment (5), first-stage reverse osmosis device (7), two-pass reverse osmosis device (9), mixed ion exchanger (11) and water pump, it is characterized in that: advanced treatment system is by more medium filter (1), ultrafiltration promotes water pump (2), self-cleaning filter (3), heat-exchanger rig (4), ultra-filtration equipment (5), first-stage reverse osmosis promotes water pump (6), first-stage reverse osmosis device (7), two-pass reverse osmosis promotes water pump (8), two-pass reverse osmosis device (9), mix bed lifting water pump (10), through the pipeline formation that is connected in series, first-stage reverse osmosis device (7) also is provided with small transfer line through backwash water tank (13) to mixed ion exchanger (11) according to the order of sequence, backwash water pump (12) is connected to preposition more medium filter (1).
2. water reuse advanced treatment system in as claimed in claim 1, it is characterized in that: the filter material layer in the described preposition more medium filter (1) is anthracite coal measure, quartz sand layer, heavy mineral layer.
3. water reuse advanced treatment system in as claimed in claim 1, it is characterized in that: the ingress of described first-stage reverse osmosis device (7) is provided with the double feed inlet chemicals dosing plant.
4. water reuse advanced treatment system in as claimed in claim 1, it is characterized in that: the ingress of described two-pass reverse osmosis device (9) is provided with chemicals dosing plant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202569071U CN201746400U (en) | 2010-07-14 | 2010-07-14 | Depth treatment system for reclaimed water recycling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202569071U CN201746400U (en) | 2010-07-14 | 2010-07-14 | Depth treatment system for reclaimed water recycling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201746400U true CN201746400U (en) | 2011-02-16 |
Family
ID=43581078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202569071U Expired - Lifetime CN201746400U (en) | 2010-07-14 | 2010-07-14 | Depth treatment system for reclaimed water recycling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201746400U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249445A (en) * | 2011-04-26 | 2011-11-23 | 中国矿业大学(北京) | Coal bed gas produced water disposal system |
| CN102372337A (en) * | 2011-09-30 | 2012-03-14 | 南京大学 | Method for advanced treatment and recycle of papermaking wastewater |
| CN102745838A (en) * | 2012-07-25 | 2012-10-24 | 重庆国际复合材料有限公司 | Advanced treatment method and device for glass fibre production wastewater |
| CN103880217A (en) * | 2014-03-25 | 2014-06-25 | 济钢集团有限公司 | Drained water recycling model for soft water preparation system and recycling method |
| CN104291458A (en) * | 2013-07-18 | 2015-01-21 | 东丽先端材料研究开发（中国）有限公司 | Water reuse treatment method |
| CN104909492A (en) * | 2015-05-25 | 2015-09-16 | 陕西华电瑶池发电有限公司 | Method for improving power plant raw water utilization rate |
| CN110342672A (en) * | 2018-04-04 | 2019-10-18 | 中国石油天然气集团有限公司 | Purify the processing system and its processing method of recovered water |
| CN111362470A (en) * | 2020-04-17 | 2020-07-03 | 莱特莱德（北京）环境技术股份有限公司 | Advanced treatment and recycling system for copper smelting pickling wastewater |
| CN112028273A (en) * | 2020-07-30 | 2020-12-04 | 中冶南方都市环保工程技术股份有限公司 | High-recovery-rate reclaimed water recycling advanced treatment system and treatment method |
-
2010
- 2010-07-14 CN CN2010202569071U patent/CN201746400U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249445A (en) * | 2011-04-26 | 2011-11-23 | 中国矿业大学(北京) | Coal bed gas produced water disposal system |
| CN102372337A (en) * | 2011-09-30 | 2012-03-14 | 南京大学 | Method for advanced treatment and recycle of papermaking wastewater |
| CN102745838A (en) * | 2012-07-25 | 2012-10-24 | 重庆国际复合材料有限公司 | Advanced treatment method and device for glass fibre production wastewater |
| CN104291458A (en) * | 2013-07-18 | 2015-01-21 | 东丽先端材料研究开发（中国）有限公司 | Water reuse treatment method |
| CN103880217A (en) * | 2014-03-25 | 2014-06-25 | 济钢集团有限公司 | Drained water recycling model for soft water preparation system and recycling method |
| CN104909492A (en) * | 2015-05-25 | 2015-09-16 | 陕西华电瑶池发电有限公司 | Method for improving power plant raw water utilization rate |
| CN110342672A (en) * | 2018-04-04 | 2019-10-18 | 中国石油天然气集团有限公司 | Purify the processing system and its processing method of recovered water |
| CN111362470A (en) * | 2020-04-17 | 2020-07-03 | 莱特莱德（北京）环境技术股份有限公司 | Advanced treatment and recycling system for copper smelting pickling wastewater |
| CN112028273A (en) * | 2020-07-30 | 2020-12-04 | 中冶南方都市环保工程技术股份有限公司 | High-recovery-rate reclaimed water recycling advanced treatment system and treatment method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201746400U (en) | Depth treatment system for reclaimed water recycling | |
| CN102826686B (en) | Double-membrane treatment method of iron and steel industrial wastewater | |
| CN101648759B (en) | Recycling processing method for wastewater produced by processing stainless steel | |
| CN102417253B (en) | In-depth treatment zero-discharge recovery equipment for heavy metal waste water | |
| CN101798150B (en) | Treatment method of wastewater with high salt content and treatment device thereof | |
| CN112142233A (en) | Thermal power plant circulating water and sewage water full-membrane-process zero-emission treatment system and method | |
| CN112794500B (en) | Coking wastewater strong brine near-zero emission treatment system and treatment method thereof | |
| CN212025040U (en) | Electrodialysis desalination treatment system for circulating water and sewage of thermal power plant | |
| CN107758941B (en) | Green energy-saving desulfurization wastewater treatment system | |
| CN210237367U (en) | Arid cold area landfill leachate processing apparatus | |
| CN103723849A (en) | Process and device for recovering Fe(OH)2 and Na2SO4 from ferric oxide stain material wastewater concentration system | |
| CN202265468U (en) | Equipment for deeply treating and recovering heavy metal waste water with zero discharge | |
| CN104016510B (en) | The Application way of a kind of thermal power plant reverse osmosis concentrated water and municipal effluent interaction process | |
| CN209456210U (en) | One kind is for the personal reasonable reclaiming system of water of Boiler water Feeding System | |
| CN112028273A (en) | High-recovery-rate reclaimed water recycling advanced treatment system and treatment method | |
| CN103304072A (en) | Recycling method of industrial waste water | |
| CN110002676A (en) | A kind of sewage plant utilized based on sub-prime and steam power plant's water circulation use technique | |
| CN215403556U (en) | Recycling treatment system for thermal power plant circulating water sewage | |
| CN211419839U (en) | Industrial circulating water drainage recycling treatment device | |
| CN212102431U (en) | Combined treatment system applied to underground drainage/strong brine of coal mine | |
| CN210193565U (en) | Waste water zero discharge system of whole factory of reclaimed water source gas power plant | |
| CN203144210U (en) | System capable of improving desalted water yield in winter | |
| CN210065273U (en) | Multistage electrochemical water treatment system | |
| CN102417270A (en) | Printing and dyeing wastewater treatment system | |
| CN109775910A (en) | ICL for Indirect Coal Liquefaction reused water processing technique and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 430205 No. 59 Liufang Avenue, Donghu High-tech Development Zone, Wuhan City, Hubei Province Patentee after: Zhongye Southern Urban Environmental Protection Engineering Technology Co., Ltd. Address before: 430071 Dongsha Building, 122 North Road, Wuchang District, Wuhan City, Hubei Province, 15th Floor Patentee before: Wuhan Urban Environment Protection Engineering Techn Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| DD01 | Delivery of document by public notice |
Addressee: Li Xianwang Document name: Notification of Passing Examination on Formalities |
|
| DD01 | Delivery of document by public notice | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110216 |
|
| CX01 | Expiry of patent term |