CN201427917Y - Treatment device for landfill leachate - Google Patents
Treatment device for landfill leachate Download PDFInfo
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- CN201427917Y CN201427917Y CN2009201082592U CN200920108259U CN201427917Y CN 201427917 Y CN201427917 Y CN 201427917Y CN 2009201082592 U CN2009201082592 U CN 2009201082592U CN 200920108259 U CN200920108259 U CN 200920108259U CN 201427917 Y CN201427917 Y CN 201427917Y
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- reverse osmosis
- osmosis membrane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The utility model relates to a treatment device for landfill leachate. The treatment device comprises an adjusting tank, an anaerobic treatment tank, an anoxic treatment tank, an aerobic treatment tank, a submerged membrane bioreactor, a middle water tank, a security filter, and a reverse osmosis membrane machine set, wherein, the adjusting tank, the anaerobic treatment tank, the anoxic treatmenttank, the aerobic treatment tank, the submerged membrane bioreactor, the middle water tank, the security filter, and the reverse osmosis membrane machine set are communicated in sequence through a pump and a delivery line; the anaerobic treatment tank and a marsh gas deodorization device are communicated; the marsh gas deodorization device is communicated with a marsh gas combustion device or a marsh gas recovery device; a blower is communicated with the aerobic treatment tank and the submerged membrane bioreactor; the back part of the security filter can be connected to the reverse osmosis membrane machine set through a nanofiltration membrane machine set and an interstage water tank; the anaerobic treatment tank, the anoxic treatment tank, and the aerobic treatment tank are connected toa sludge tank; the submerged membrane bioreactor is communicated with the anoxic treatment tank directly; and the reverse osmosis membrane machine set is communicated with the adjusting tank directly.In the utility model, nanofiltration membrane treatment is replaced by reverse osmosis membrane treatment, or the reverse osmosis membrane treatment is combined with the nanofiltration membrane treatment, so that the membrane treatment effect is improved, and the requirement of new standard (GB 16889-2008) is met.
Description
Technical field
The utility model relates to a kind of high concentration organic sewage treating system, particularly about a kind of treatment unit of percolate.
Background technology
Percolate is a kind of organic sewage of high density, is characterized in: Pollutant levels height, complicated component, the water quality of the percolate under the various different conditions, the water yield all have very big difference.Therefore, percolate is the sewage of the big severe contamination of the interior intractability of generally acknowledging of present world wide.Percolate is seriously polluted to environment, is a kind of water pollution source of being badly in need of solving.
About the treatment technology of percolate, mainly comprise following several abroad:
1, typical DT-ro treatment technology, its flow process as shown in Figure 1.In this technology, do not adopt the step of biochemical method, and all steps all are the filter methods of physics.
2, typical detachable membrane biological reaction process (MBR), its flow process as shown in Figure 2.In this technology, anoxic, aerobic biochemical treatment step and split type MBR processing, nanofiltration membrane (NF) treatment step have been adopted.
Above-mentioned external garbage leachate treatment process, it is high all to exist investment, working cost height, shortcomings such as operation control complexity.Its topmost problem is: wanting that the state of the art of external refuse landfill is more domestic is advanced, general landfill again after refuse classification all, and sorting process is not generally all done in domestic refuse landfill, with the direct landfill of crude waste, and the water quality of its percolate and bigger difference is abroad arranged.So external garbage leachate treatment process method is directly used at home, generally all has problems, have in addition can't use.
The treatment technology of domestic percolate relatively lags behind, and mainly comprises:
As shown in Figure 3, adopted materialization air supporting, adopted anoxic and MBR treatment step afterwards, the technical process of using nanofiltration membrane (NF) to handle at last as pre-treatment.Practice shows that this technology only is suitable for the lower percolate of concentration, and it does not possess versatility.
As shown in Figure 4, adopted, in conjunction with the treatment process of the percolate of nanofiltration membrane advanced treatment based on the biochemical process step.This processing technological flow can adapt to China's " integrated wastewater discharge standard " (GB8978-1996) in the requirement of relevant consumer waste infiltration (drop) liquid emission limit.But, along with " consumer waste filling and embedding pollution control criterion " (GB16889-2008) in the execution on July 1st, 2008, and the promulgation on July 8th, 2008 " about the bulletin of Beijing's household refuse landfill sites water pollutant discharging applied code related problems ", consumer waste infiltration (drop) liquid emission limit and household refuse landfill sites water pollutant emission concentration limit value are had higher requirement again.And the treatment process of the various percolates of above-mentioned prior art all can not adapt to the requirement that new garbage loading embeading pollutes control criterion.
Summary of the invention
At the problems referred to above, the purpose of this utility model provides a kind of treatment unit that can adapt to the percolate of new garbage loading embeading pollution control criterion requirement.
For achieving the above object, the utility model is taked following technical scheme: a kind of treatment unit of percolate, it is characterized in that: it comprises an equalizing tank that is communicated with in proper order by pump and transfer line, one anaerobic process tank, one anaerobic treatment jar, one aerobic treatment jar, one submerged membrane bioreactor, one intermediate water tank, an one security personnel's strainer and a reverse osmosis membrane unit, described anaerobic process tank is connected with a biogas odor removal by transfer lime, the biogas odor removal is communicated with a biogas combustion unit or a methane recovery device by transfer lime, and a gas blower is communicated with described aerobic treatment jar and submerged membrane bioreactor respectively by transfer lime.
Be linked in sequence after described security personnel's strainer a nanofiltration membrane unit and an inter-stage water tank, described inter-stage water tank is connected to described reverse osmosis membrane unit.
If the water outlet of described intermediate water tank is a water up to standard, then directly be communicated with the water side of described reverse osmosis membrane unit by transfer lime.
If the water outlet of described nanofiltration membrane unit is a water up to standard, then directly be communicated with the water side of described reverse osmosis membrane unit by transfer lime.
Described anaerobic process tank, anaerobic treatment jar, aerobic treatment jar pass through the mud discharging pipe coupling respectively to a sludge sump, described submerged membrane bioreactor directly is communicated with described anaerobic treatment jar by transfer lime, and described reverse osmosis membrane unit directly is communicated with described equalizing tank by the concentrated water discharge pipe.
Described reverse osmosis membrane unit comprises the plurality of sections reverse osmosis membrane unit, the described reverse osmosis membrane unit of each section includes feed-water end, concentrated water discharge end and clear water discharge end, wherein first section described reverse osmosis membrane unit feed-water end is connected to water inlet pipe, the concentrated water discharge end of the described reverse osmosis membrane unit of final stage, all couples together described concentrated water discharge end of the preceding paragraph and the described feed-water end of next section by pipe connecting between middle each adjacent described reverse osmosis membrane unit to described equalizing tank by described concentrated water discharge pipe coupling; The clear water discharge end of the described reverse osmosis membrane unit of each section all is connected to the clear water delivery pipe.
Described nanofiltration membrane unit comprises plurality of sections nanofiltration membrane unit, the described nanofiltration membrane of each section unit includes feed-water end, concentrated water discharge end and clear water discharge end, wherein first section described nanofiltration membrane unit feed-water end is connected to water inlet pipe, the unitary concentrated water discharge end of the described nanofiltration membrane of final stage, all couples together described concentrated water discharge end of the preceding paragraph and the described feed-water end of next section by pipe connecting between middle each adjacent described nanofiltration membrane unit to described equalizing tank by described concentrated water discharge pipe coupling; The unitary clear water discharge end of the described nanofiltration membrane of each section all is connected to the clear water delivery pipe.
The utility model is owing to take above technical scheme, it has the following advantages: 1, the utility model is at beginning to carry out " consumer waste filling and embedding pollution control criterion " (GB16889-2008) on July 1st, 2008, and " about the bulletin of Beijing's household refuse landfill sites water pollutant discharging applied code related problems " of on July 8th, 2008 promulgation and a kind of device of being provided with, this device replaces nanofiltration membrane treatment with reverse osmosis membrane processing after adopting common combination biochemical treatment; Or after nanofiltration membrane treatment, increase reverse osmosis membrane processing, form a secondary hybrid films group processing unit, thereby reach the purpose that improves the film treatment effect, in the water outlet after the utility model is handled, principal pollutant chemical oxygen demand cod:＜60mg/L, ammonia-nitrogen content NH
4 +-N:＜8mg/L, other pollutent index also can satisfy the requirement of new standard (GB16889-2008).2, reverse osmosis membrane unit of the present utility model and nanofiltration membrane unit all can be set to single hop film processing unit, also can be set to multistage film processing unit, and structure formation and integrated mode have diversified characteristics.3, the utlity model has the characteristics that flow process is integrated, level of automation is high, can accomplish unmanned, can adapt to the operant level of field worker.4, the utility model takes up an area of less, construction investment economizes, all adopt domestic equipment and material (quite external same treatment water yield construction investment 4/5), ton cost of water treatment low (quite both at home and abroad 2/3 of other treatment process ton cost of water treatment), be particularly suitable for domestic application.
Description of drawings
Fig. 1 is the schematic flow sheet of DT-reverse osmosis garbage leachate treatment process in the prior art
Fig. 2 is the schematic flow sheet of split type MBR garbage leachate treatment process in the prior art
Fig. 3 is the schematic flow sheet of another kind of garbage leachate treatment process in the prior art
Fig. 4 is the schematic flow sheet of another garbage leachate treatment process in the prior art
Fig. 5 is the composition synoptic diagram of an embodiment of the utility model
Fig. 6 is the structural representation of the two sections reverse osmosis membrane groups of one-level in the utility model
Fig. 7 is the structural representation of the three sections reverse osmosis membrane groups of one-level in the utility model
Fig. 8 is the composition synoptic diagram of another embodiment of the utility model
Fig. 9 is three sections structural representations that mix unit of secondary among another embodiment
Embodiment
Below in conjunction with drawings and Examples, the utility model device is described in detail.
In order to adapt to new refuse treatment standard, the utility model adopts reverse osmosis membrane processing to replace the mode of nanofiltration membrane treatment on original biochemical treatment basis; Or after nanofiltration membrane treatment, increase reverse osmosis membrane processing, form the mode that a secondary hybrid films group is handled.
As shown in Figure 5, be the embodiment that adopts the reverse osmosis membrane processing mode separately, it comprises an equalizing tank that is communicated with in proper order by pump and transfer lime, one anaerobic process tank, one anaerobic treatment jar, one aerobic treatment jar, a submerged membrane bioreactor, an intermediate water tank, a security personnel's strainer and a reverse osmosis membrane unit.Anaerobic process tank is connected with a biogas odor removal by transfer lime.The biogas odor removal is communicated with a biogas combustion unit or a methane recovery device by transfer lime.One gas blower is communicated with aerobic treatment jar, submerged membrane bioreactor respectively by transfer lime.
Be respectively equipped with a sludge carrier pipe in the bottom of anaerobic process tank, anaerobic treatment jar, aerobic treatment jar and be communicated to a sludge sump.The submerged membrane bioreactor can directly be communicated with the anaerobic treatment jar by transfer lime, makes the part biochemical sludge be back to anaerobic treatment jar, circularly purifying.The water side of intermediate water tank can directly be communicated with the rising pipe of reverse osmosis membrane unit by transfer lime.The reverse osmosis membrane unit can directly be communicated with equalizing tank by transfer lime, makes the dense water that produces in the processing of reverse osmosis membrane unit, returns equalizing tank, carries out circular treatment.
In the device that present embodiment provides, draw water from middle water tank with pump, through security personnel's strainer, again through topping-up pump be forced into the required pressure of reverse osmosis membrane group operation (1.4～3.0MPa), send into the reverse osmosis membrane unit then.The reverse osmosis membrane unit reaches emission standard after handling, and the sewage after the processing directly discharges or recycles.When if the sewage that discharges after the submerged Membrane Bioreactor for Wastewater Treatment can be up to standard, the sewage after the processing can be by the transfer lime that is provided with on the intermediate water tank, surmounted the reverse osmosis membrane unit after, directly discharging or reuse.Exceed standard if the sewage that discharges after the submerged Membrane Bioreactor for Wastewater Treatment only has slightly, also can mix by a certain percentage, back up to standard discharging or reuse with the water outlet of reverse osmosis membrane unit.Can reduce the working time of reverse osmosis membrane group so as far as possible, prolong the work-ing life of film, reduce the cost that percolate is handled.
In the present embodiment, the reverse osmosis membrane unit is the unit of being made up of the plurality of sections reverse osmosis membrane unit, can be two sections of one-levels (as shown in Figure 6), or three sections of one-levels as shown in Figure 7).No matter the reverse osmosis membrane unit of any form includes reverse osmosis membrane unit 1, pipe connecting 2, water inlet pipe 3, clear water delivery pipe 4, concentrated water discharge pipe 5.If be two sections reverse osmosis membrane units of one-level, reverse osmosis membrane unit 1 just is two sections; If be three sections reverse osmosis membrane units of one-level, reverse osmosis membrane unit 1 just is three sections.Each section reverse osmosis membrane unit 1 all comprises feed-water end, concentrated water discharge end and clear water discharge end, one section reverse osmosis membrane unit 1 feed-water end therein connects water inlet pipe 3, the concentrated water discharge end of this section reverse osmosis membrane unit 1 is connected to the feed-water end of next section reverse osmosis membrane unit 1 by pipe connecting 2, the concentrated water discharge end of next section reverse osmosis membrane unit 1 is connected to the more feed-water end of next section reverse osmosis membrane unit 1 by pipe connecting 2 again, by that analogy, the concentrated water discharge end of final stage reverse osmosis membrane unit 1 takes back equalizing tank by concentrated water discharge pipe 5.The clear water discharge end of all each section reverse osmosis membrane unit 1 all is connected to clear water delivery pipe 4.
Be connected to example with syllogic, as shown in Figure 7, the dense water that connects 3, the first sections reverse osmosis membrane unit 1 of water inlet pipe at the feed-water end of first section reverse osmosis membrane unit 1 is passed into the feed-water end of second section reverse osmosis membrane unit 1 by pipe connecting 2, and clear water is drained by clear water delivery pipe 4.The dense water of second section reverse osmosis membrane unit 1 is passed into the feed-water end of the 3rd section reverse osmosis membrane unit 1 by pipe connecting 2, and clear water is drained by clear water delivery pipe 4.The dense water of the 3rd section reverse osmosis membrane unit 1 takes back equalizing tank by concentrated water discharge pipe 5, and clear water is drained by clear water delivery pipe 4.
As shown in Figure 8, be to adopt the combine embodiment of mode of nanofiltration membrane treatment and reverse osmosis membrane processing, it comprises the following device that is communicated with in proper order by pump and transfer lime: an equalizing tank, an anaerobic process tank, an anaerobic treatment jar, one aerobic treatment jar, one submerged membrane bioreactor, an intermediate water tank, security personnel's strainer, one nanofiltration membrane unit, inter-stage water tank group and a reverse osmosis membrane unit.Anaerobic process tank is connected with a biogas odor removal by transfer lime.The biogas odor removal is communicated with a biogas combustion unit or a methane recovery device by transfer lime.One gas blower is communicated with aerobic treatment jar, submerged membrane bioreactor respectively by transfer lime.
In the present embodiment, the bottom of anaerobic process tank, anaerobic treatment jar, aerobic treatment jar is respectively equipped with a sludge carrier pipe and is communicated with a sludge sump.Nanofiltration membrane unit rising pipe can directly be communicated with the rising pipe of reverse osmosis membrane unit by transfer lime.Nanofiltration membrane unit and reverse osmosis membrane unit can directly be communicated with equalizing tank by transfer lime, make the dense water that produces in the processing of nanofiltration membrane unit and reverse osmosis membrane unit, return equalizing tank, and circulation enters the entire treatment process then.
In the device that present embodiment provides, the water outlet of security personnel's strainer enters the inter-stage water tank through the nanofiltration membrane unit, again through topping-up pump, with water be pressurized to the required pressure of reverse osmosis membrane unit operation (1.4～3.0MPa), enter the reverse osmosis membrane unit then.The reverse osmosis membrane unit reaches emission standard after handling, and the sewage after the processing directly discharges or recycles.When the sewage of discharging can reach emission standard after the nanofiltration membrane group is handled, the sewage after the processing can surmount the reverse osmosis membrane unit by the transfer lime that is provided with on the inter-stage water tank, directly discharging or recycling.If the sewage that discharges after the nanofiltration membrane group is handled only has slightly exceed standard, also can mix by a certain percentage, back up to standard discharging or reuse with the water outlet of reverse osmosis membrane group.Can reduce the working time of reverse osmosis membrane group so as far as possible, prolong the work-ing life of film, reduce the cost that percolate is handled.
In the present embodiment,, formed three sections hybrid films of secondary and handled unit (as shown in Figure 9) by three sections nanofiltration membrane units of an one-level, an inter-stage water tank and three sections reverse osmosis membrane units of an one-level.The similar of nanofiltration membrane unit and reverse osmosis membrane unit, it is the processing film difference of selecting, it comprises nanofiltration membrane unit 11, pipe connecting 12 between the nanofiltration membrane 11, nanofiltration membrane water inlet pipe 13, nanofiltration membrane clear water delivery pipe 14, nanofiltration membrane concentrated water discharge pipe 15, the mode of connection between each parts is with the reverse osmosis membrane unit.The clear water delivery pipe 14 of nanofiltration membrane unit is divided into two branch roads, and a branch road is connected to the water inlet pipe 3 of reverse osmosis membrane unit by the inter-stage water tank; Another branch road is directly connected to the clear water delivery pipe 4 of reverse osmosis membrane unit.
In the water outlet after the utility model is handled, principal pollutant chemical oxygen demand cod:＜60mg/L, ammonia-nitrogen content NH
4 +-N:＜8mg/L, other pollutent index also can satisfy the requirement of new standard (GB16889-2008).
Claims (8)
1, a kind of treatment unit of percolate, it is characterized in that: it comprises an equalizing tank that is communicated with in proper order by pump and transfer line, one anaerobic process tank, one anaerobic treatment jar, one aerobic treatment jar, one submerged membrane bioreactor, one intermediate water tank, an one security personnel's strainer and a reverse osmosis membrane unit, described anaerobic process tank is connected with a biogas odor removal by transfer lime, the biogas odor removal is communicated with a biogas combustion unit or a methane recovery device by transfer lime, and a gas blower is communicated with described aerobic treatment jar and submerged membrane bioreactor respectively by transfer lime.
2, the treatment unit of a kind of percolate as claimed in claim 1 is characterized in that: be linked in sequence after described security personnel's strainer a nanofiltration membrane unit and an inter-stage water tank, described inter-stage water tank is connected to described reverse osmosis membrane unit.
3, the treatment unit of a kind of percolate as claimed in claim 1 is characterized in that: the water side of described intermediate water tank directly is communicated with the water side of described reverse osmosis membrane unit by transfer lime.
4, the treatment unit of a kind of percolate as claimed in claim 2 is characterized in that: the water side of described nanofiltration membrane unit directly is communicated with the water side of described reverse osmosis membrane unit by transfer lime.
5, as the treatment unit of claim 1 or 2 or 3 or 4 described a kind of percolates, it is characterized in that: described anaerobic process tank, anaerobic treatment jar, aerobic treatment jar pass through the mud discharging pipe coupling respectively to a sludge sump, described submerged membrane bioreactor directly is communicated with described anaerobic treatment jar by transfer lime, and described reverse osmosis membrane unit directly is communicated with described equalizing tank by the concentrated water discharge pipe.
6, treatment unit as a kind of percolate as described in claim 1 or 2 or 3 or 4: it is characterized in that: as described in the reverse osmosis membrane unit comprise the plurality of sections reverse osmosis membrane unit, the described reverse osmosis membrane unit of each section includes feed-water end, concentrated water discharge end and clear water discharge end, wherein first section described reverse osmosis membrane unit feed-water end is connected to water inlet pipe, the concentrated water discharge end of the described reverse osmosis membrane unit of final stage, all couples together described concentrated water discharge end of the preceding paragraph and the described feed-water end of next section by pipe connecting between middle each adjacent described reverse osmosis membrane unit to described equalizing tank by described concentrated water discharge pipe coupling; The clear water discharge end of the described reverse osmosis membrane unit of each section all is connected to the clear water delivery pipe.
7, treatment unit as a kind of percolate as described in the claim 5: it is characterized in that: as described in the reverse osmosis membrane unit comprise the plurality of sections reverse osmosis membrane unit, the described reverse osmosis membrane unit of each section includes feed-water end, concentrated water discharge end and clear water discharge end, wherein first section described reverse osmosis membrane unit feed-water end is connected to water inlet pipe, the concentrated water discharge end of the described reverse osmosis membrane unit of final stage, all couples together described concentrated water discharge end of the preceding paragraph and the described feed-water end of next section by pipe connecting between middle each adjacent described reverse osmosis membrane unit to described equalizing tank by described concentrated water discharge pipe coupling; The clear water discharge end of the described reverse osmosis membrane unit of each section all is connected to the clear water delivery pipe.
8, treatment unit as a kind of percolate as described in claim 2 or 4: it is characterized in that: as described in the nanofiltration membrane unit comprise plurality of sections nanofiltration membrane unit, the described nanofiltration membrane of each section unit includes feed-water end, concentrated water discharge end and clear water discharge end, wherein first section described nanofiltration membrane unit feed-water end is connected to water inlet pipe, the unitary concentrated water discharge end of the described nanofiltration membrane of final stage, all couples together described concentrated water discharge end of the preceding paragraph and the described feed-water end of next section by pipe connecting between middle each adjacent described nanofiltration membrane unit to described equalizing tank by described concentrated water discharge pipe coupling; The unitary clear water discharge end of the described nanofiltration membrane of each section all is connected to the clear water delivery pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201082592U CN201427917Y (en) | 2009-05-19 | 2009-05-19 | Treatment device for landfill leachate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201082592U CN201427917Y (en) | 2009-05-19 | 2009-05-19 | Treatment device for landfill leachate |
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| CN201427917Y true CN201427917Y (en) | 2010-03-24 |
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| CN2009201082592U Expired - Lifetime CN201427917Y (en) | 2009-05-19 | 2009-05-19 | Treatment device for landfill leachate |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102320706A (en) * | 2011-07-08 | 2012-01-18 | 上海希沃环境科技有限公司 | System for deep recovery and treatment of coking wastewater biochemical effluent |
| CN103011489A (en) * | 2011-09-22 | 2013-04-03 | 北京朗新明环保科技有限公司 | Household garbage leachate treatment system |
| CN104355489A (en) * | 2014-10-31 | 2015-02-18 | 四川景星环境科技有限公司 | A2/O and MBR (Membrane Biological Reactor) combination modularized sewage treatment system |
| CN108793612A (en) * | 2018-07-06 | 2018-11-13 | 浙江正展工程项目管理有限公司 | A kind of energy-saving town sewage treatment system |
-
2009
- 2009-05-19 CN CN2009201082592U patent/CN201427917Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102320706A (en) * | 2011-07-08 | 2012-01-18 | 上海希沃环境科技有限公司 | System for deep recovery and treatment of coking wastewater biochemical effluent |
| CN103011489A (en) * | 2011-09-22 | 2013-04-03 | 北京朗新明环保科技有限公司 | Household garbage leachate treatment system |
| CN104355489A (en) * | 2014-10-31 | 2015-02-18 | 四川景星环境科技有限公司 | A2/O and MBR (Membrane Biological Reactor) combination modularized sewage treatment system |
| CN108793612A (en) * | 2018-07-06 | 2018-11-13 | 浙江正展工程项目管理有限公司 | A kind of energy-saving town sewage treatment system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 100084 Beijing city Haidian District Nongda Road No. 1 Building No. 2 hospital B block 618 Patentee after: Beijing clean green environment Polytron Technologies Inc Address before: Silicon Valley 100084 Beijing city Haidian District Nongda road bright city 2B, room 618 Patentee before: Beijing Jeegreen Technology Co., Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100324 |