CN202212406U - Garbage treatment device for cyclically utilizing organisms to dry secondary pollutants - Google Patents
Garbage treatment device for cyclically utilizing organisms to dry secondary pollutants Download PDFInfo
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- CN202212406U CN202212406U CN2011203051492U CN201120305149U CN202212406U CN 202212406 U CN202212406 U CN 202212406U CN 2011203051492 U CN2011203051492 U CN 2011203051492U CN 201120305149 U CN201120305149 U CN 201120305149U CN 202212406 U CN202212406 U CN 202212406U
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Abstract
The utility model relates to a garbage treatment device for cyclically utilizing organisms to dry secondary pollutants, which comprises a sealed reactor, a leachate collector, an air inlet system and an exhaust gas treatment device, wherein a spray pipe is fixedly arranged at the inner upper part of the sealed reactor; a porous support plate and a leachate collecting pipe are fixedly arranged at the inner lower part of the sealed reactor; the leachate collecting pipe and the spray pipe are connected with the leachate collector through pipes, and a submerged pump is arranged in the collector for connecting the spray pipe so as to realize reverse spray; the air inlet system comprises an air inlet pipe and an air inlet fan; and the exhaust gas treatment device comprises an exhaust gas recovering pipe, a drying cabinet, an exhaust gas treatment fan and a purifying device. The garbage treatment device has the advantages that the exhaust gas treatment and utilization of organism drying are effectively realized, exhaust gas is dried under the condition of reducing odor treatment quantity and discharge quantity, capabilities of ventilating and carrying steam are improved, the ambient temperature and organism environment which are suitable for the activities of the organisms are created, reaction time is shortened, and organism drying efficiency is improved.
Description
Technical field
The utility model relates to a kind of refuse disposal installation, especially relates to a kind of rubbish biological drying and other treatment device, specifically relates to the refuse disposal installation of the biological dewatered secondary pollution of a kind of recycle.
Background technology
At present; China's domestic waste generally adopts the mode of mixed collection; The organic waste content of the easy degraded of the surplus grade in kitchen higher (about 50%, some are regional even reach 60% usually) in the rubbish, thus make the rubbish of collecting have the characteristics of moisture content height (basically about 60%).The composting of this high-moisture percentage if directly be used for landfill, not only takies a large amount of land areas; And the landfill process also will produce a large amount of percolates and biogas; The intractability of percolate is quite big, and biogas is kind of greenhouse gases, and global warming is had direct influence.Burn if directly be used for; Because its high-moisture percentage; Reduced the house refuse Lower heat value, causing some townm refuses need add auxiliary fuel could burn, and promptly enables to burn also to have cut down the burning energy recovery efficiency; And owing to burn pollutants such as not exclusively being easy to generate bioxin, running cost is higher.The high-moisture percentage of rubbish makes that also the waste component adhesive is strong, and the mechanical sorting weak effect has limited the possibility that realizes the garbage disposal process optimization through sorting.Therefore, utilize level, reduce the managing household garbage cost, press for the technology that reduces the house refuse moisture content for improving China's garbage as resource.Biological dewatered promptly is a kind of treatment technology that can reduce msw water content effectively.
Biological dewatered being meant under the forced ventilation condition, microorganism are utilized the easily biodegradable organics fermentation heat production in the composting, cause the ventilating gas temperature to raise.The steam vapour amount (humidity) that can hold owing to gas increases along with temperature raises, and through this hot-air convection draft type, quickens moisture evaporation, removes the moisture of composting, improves refuse thermal value.This processing mode needing no outside energy (comprising mechanical energy and heat energy) is realized biological dewatered effect, can also make biodegradable organic basicly stable simultaneously, is a kind of reduction msw water content technology that application prospect is arranged very much.
Yet during biological dewatered processing, will produce with percolate and tail gas is master's secondary pollution, and wherein percolate is a kind of organic wastewater of high concentration, and the individual processing difficulty is very big; And tail gas contains a certain amount of moisture and odorant pollutant after the mummification, forms comparatively serious secondary pollution easily, and easy initiation conflicts with facility periphery resident's.Present biological dewatered treating apparatus; Normally with the percolate individual processing; Tail gas is handled via special exhaust gas processing device, and the discharge capacity of tail gas is bigger in the biological dewatered process, and treating tail gas is partly invested and will be accounted for about 1/3～1/2 of biological dewatered processing plant at present; Investment and running cost are all higher, and the present rubbish biological drying and other treatment time is long, and treatment effect is also undesirable, the development of restriction rubbish biological drying technique.Therefore, how under the prerequisite that guarantees drying effect, develop the biological dewatered treating apparatus of a kind of novel house refuse; Can make the percolate zero-emission; The vent gas treatment amount reduces greatly, and then cuts operating costs, and improves treatment effect and becomes the important topic that this area needs to be resolved hurrily.
Summary of the invention
To the defective of prior art, the purpose of the utility model provides a kind of simple in structure, and is easy to use, and operation cost is low, can realize the percolate zero-emission, reduce the refuse disposal installation of the biological dewatered secondary pollution of recycle of vent gas treatment amount greatly.
For reaching above-mentioned purpose, the utility model has adopted following technical scheme:
The refuse disposal installation of the biological dewatered secondary pollution of a kind of recycle comprises sealed reactor, percolate collector, air inlet system and exhaust gas treating device; Offer exhaust port on the sealed reactor, its internal upper part fixed installation shower, the bottom is installed with porous support plate and leachate collection pipe; Percolate collector links to each other with leachate collection pipe and shower through pipeline respectively, establishes submersible sewage pump in the gatherer, realizes back spray in order to connect shower; Air inlet system comprises air intake pipeline and air intake blower fan; The air intake pipeline is fixedly mounted on the below of the porous support plate in the sealed reactor; And the sidewall that passes sealed reactor is connected on the air outlet of air intake blower fan, and the air inlet of air intake blower fan links to each other with atmosphere through pipeline; Exhaust gas treating device comprises tail gas recycle pipe, drying box, vent gas treatment blower fan and purifier; The tail gas recycle pipe links to each other with exhaust port and drying box import respectively; The outlet of drying box links to each other with the air inlet of air intake blower fan and vent gas treatment blower fan respectively through pipeline, and the air outlet of vent gas treatment blower fan links to each other with purifier through pipeline.
The utility model also can further be realized through following technical scheme:
The refuse disposal installation of the biological dewatered secondary pollution of described recycle; Wherein, Said drying box outlet is provided with a threeway A, and the bypass of threeway A links to each other with air intake blower fan through the tail gas return line, and another bypass links to each other with the vent gas treatment blower fan through the vent gas treatment pipeline; Be equiped with tail gas recycle control valve and vent gas treatment pipe-line control valve on tail gas return line and the vent gas treatment pipeline respectively.
The refuse disposal installation of the biological dewatered secondary pollution of described recycle; Wherein, Installing one threeway B on the air inlet of said air intake blower fan; The bypass of threeway B links to each other with the tail gas recycle control valve, and another bypass links to each other with a fresh air pipeline control valve, and fresh air pipeline control valve links to each other with atmosphere.
Installing one oxygen concentration sensor between the air inlet of said threeway B and air intake blower fan; Be equiped with temperature sensor in the said reactor; Said tail gas recycle control valve, vent gas treatment pipe-line control valve, fresh air pipeline control valve, oxygen concentration sensor and temperature sensor link to each other with a PLC cyclelog respectively; Controller receives and handles the feedback information of oxygen concentration sensor and temperature sensor, and controls the aperture of tail gas recycle control valve, vent gas treatment pipe-line control valve and fresh air pipeline control valve according to feedback information.
The refuse disposal installation of the biological dewatered secondary pollution of described recycle, wherein, said tail gas recycle control valve, vent gas treatment pipe-line control valve and fresh air pipeline control valve are magnetic valve.
The refuse disposal installation of the biological dewatered secondary pollution of described recycle, wherein, said drying box is one or more levels drying box.
The refuse disposal installation of the biological dewatered secondary pollution of described recycle, wherein, said sealed reactor is the totally-enclosed groove type reactor.
The refuse disposal installation of the biological dewatered secondary pollution of described recycle, wherein, said air intake pipeline adopts porous floral tube form, and the porous floral tube is fixed on the below of porous support plate, and the aperture size is 1cm, and spacing is 2-3cm, evenly distributes.
Owing to adopt above technical scheme, make the utility model possess following technique effect:
1, the refuse disposal installation of the biological dewatered secondary pollution of recycle of the utility model; Adopt enclosed reaction vessel to carry out biological dewatered reaction; The tail gas that produces is after reactor top perforate centralized collection; Dry through one-level or multilevel drying case, remove the moisture that from junk-heap body, gives out air, improve the desiccant dehumidification effect of follow-up backflow tail gas to composting.Tail gas is through after the gas shunting, and a part is the introducing odor removal directly, is disposed to atmosphere after after deodorizing, dedusting, reaching " odorant pollutant discharge standard ".Another part directly is back to reactor, goes into EAT and then improves the mummification effect to make full use of the heat energy that tail gas produces in the biological drying process, to improve, and reduces the vent gas treatment amount simultaneously.The required gas of reactor is by fresh air and backflow tail gas mix supplement; Guarantee the oxygen content (12-16%) of vent air, to keep the aerobic effect in the biological dewatered process, for growth of microorganism in the rubbish is created environment preferably; Shorten the reaction time; The mummification reaction time was controlled at about 10 days, improves organic stability in drying effect and the drying process, reduce stench and produce;
2, the refuse disposal installation of the biological dewatered secondary pollution of recycle of the utility model; Go in the reactor block returning spirt through time jet pipe road after the percolate centralized collection of biological dewatered generation; Need not percolate is further handled; Can realize the zero-emission of percolate, play the effect of circulation inoculation simultaneously, help piling microbial environment foundation in the body;
3, the refuse disposal installation of the biological dewatered secondary pollution of recycle of the utility model; Also can control the aperture and the piping flow of each magnetic valve, thereby accurately control exhaust emissions amount and piping flow through oxygen concentration sensor and PLC cyclelog are set.
4, the refuse disposal installation of the biological dewatered secondary pollution of recycle of the utility model; Before biological dewatered back tail gas refluxes; Adopt the mode of drying box that backflow tail gas is carried out abundant drying, can adopt one-level or multilevel drying as the case may be, reduce the air humidity of inlet air; Improved drying efficiency, made the biological dewatered cycle less than 10 days;
5, the refuse disposal installation of the biological dewatered secondary pollution of recycle of the utility model; Can realize biological dewatered vent gas treatment and utilization effectively, when reducing foul smell treating capacity and discharge capacity, that tail gas is dry; Improve the ability of ventilating and carrying steam; Create the environment temperature and the microbial environment that are fit to microbial activities, shortened the reaction time, improve biological dewatered efficient.
Description of drawings
Fig. 1 is the structural representation of the refuse disposal installation of the biological dewatered secondary pollution of the utility model recycle;
Fig. 2 is the electric control principle sketch map (wherein, solid arrow is the circulation of air direction, and dotted portion is the control connection relation) of the refuse disposal installation of the biological dewatered secondary pollution of the utility model recycle.
The specific embodiment
As shown in Figure 1, the refuse disposal installation of the biological dewatered secondary pollution of a kind of recycle comprises sealed reactor 1, percolate collector 4, air inlet system and exhaust gas treating device.Offer exhaust port on the sealed reactor 1, its internal upper part fixed installation shower 5, the bottom is installed with porous support plate 16 and leachate collection pipe 15.Percolate collector 4 links to each other with leachate collection pipe 15 and shower 5 through pipeline respectively, establishes submersible sewage pump in the percolate collector 4, realizes back spray in order to connect shower.Air inlet system comprises air intake pipeline 3 and air intake blower fan 8; Air intake pipeline 3 is fixedly mounted on the below of the porous support plate 16 in the sealed reactor 1; And the sidewall that passes sealed reactor 1 is connected on the air outlet of air intake blower fan 8, and the air inlet of air intake blower fan 8 links to each other with atmosphere through pipeline.Exhaust gas treating device comprises tail gas recycle pipe 6, drying box 7, vent gas treatment blower fan 9 and purifier 10; Tail gas recycle pipe 6 links to each other with exhaust port and drying box 7 imports respectively; The outlet of drying box 7 links to each other with the air inlet of air intake blower fan 8 and vent gas treatment blower fan 9 respectively through pipeline, and the air outlet of vent gas treatment blower fan 9 links to each other with purifier 10 through pipeline.
Connect for convenient, be provided with a threeway A in drying box 7 outlets, the bypass of threeway A links to each other with air intake blower fan 8 through the tail gas return line, and another bypass links to each other with vent gas treatment blower fan 9 through the vent gas treatment pipeline; Be equiped with tail gas recycle control valve 11 and vent gas treatment pipe-line control valve 13 on tail gas return line and the vent gas treatment pipeline respectively.
Can also on the air inlet of air intake blower fan 8, install a threeway B, the bypass of threeway B links to each other with tail gas recycle control valve 11, and another bypass links to each other with a fresh air pipeline control valve 12, and fresh air pipeline control valve 12 links to each other with atmosphere.
For the accurately unlatching of the above-mentioned control valve of control, can between the air inlet of threeway B and air intake blower fan 8, install an oxygen concentration sensor 14.Be provided with a plurality of temperature sensors in the reative cell 1.Said tail gas recycle control valve 11, vent gas treatment pipe-line control valve 13, fresh air pipeline control valve 12, oxygen concentration sensor 14 and temperature sensor link to each other with a PLC cyclelog 17 respectively (referring to shown in Figure 2); Controller 17 receives the feedback information of handling oxygen concentration sensor 14 and temperature sensor, and controls the aperture of tail gas recycle control valve 11, vent gas treatment pipe-line control valve 13 and fresh air pipeline control valve 12 according to feedback information.Tail gas recycle control valve 11, vent gas treatment pipe-line control valve 13 and fresh air pipeline control valve 12 the bests are magnetic valve.Drying box 7 can be one or more levels drying box.Sealed reactor 1 the best is the totally-enclosed groove type reactor.The air intake pipeline 3 best porous floral tube forms that adopt, how empty floral tube is fixed on the below of porous support plate, and caliber is definite according to the ventilation adjustment, and the aperture size is 1cm, and spacing is 2-3cm, arranges evenly.
The utility model is provided with leachate collection and returns spray system and exhaust collection and return-flow system.Form two loops respectively:
Article one, the loop is leachate collection and time spray loop; The percolate that produces in the biological dewatered process links to each other with leachate collection container 4 through leachate collection pipe 15; When reactor temperature reach 60 ℃ and keep 2 days after; Be sprayed onto in the junk-heap body for 5 times through the leachate recycle pipe, can handle percolate on the one hand, play the effect of microbe inoculation on the other hand.
Another loop is the tail gas recycle loop; The tail gas that produces in the biological dewatered process links to each other with one-level or multilevel drying case 7 through tail gas recycle pipe 6, and the pipeline that comes out from drying box is provided with threeway; A bypass of threeway links to each other with tail gas return line control valve 11; Another bypass links to each other with vent gas treatment pipe-line control valve 13, and tail gas return line control valve 11 links to each other with air intake blower fan 8, and air intake blower fan 8 links to each other with blast pipe 3; Form airtight recycled offgas treatment loop, reduced the discharging and the treating capacity of tail gas.Simultaneously; In order to guarantee the ferment effect in the drying process; A certain amount of logical oxygen content must be arranged in the air intake, so on the air inlet of air intake blower fan, install a threeway B, the bypass of threeway B links to each other with tail gas recycle control valve 11; Another bypass links to each other with a fresh air pipeline control valve 12, and fresh air pipeline control valve 12 links to each other with atmosphere.Backflow tail gas is mixed as inlet air with fresh air, guarantee that oxygen concentration of air content is 12～16%, thereby guarantee the aerobic effect in the biological dewatered process, reduce stench and produce.Remaining tail gas individual processing links to each other with purifier 10 with vent gas treatment blower fan 9 through vent gas treatment pipeline electromagnetic valve 13, is disposed to atmosphere after reaching " odorant pollutant discharge standard ".
Referring to shown in Figure 2, the percentage composition of oxygen in the oxygen concentration sensor 14 on-line monitoring pipelines is set, on the pipeline before air intake blower fan 8 by on PLC cyclelog 17 control pipers solenoid control valve opening being set.When oxygen concentration greater than 16% the time; Through PLC controller 17 data signal is converted into the signal of telecommunication; Increase the aperture of tail gas return line control valve 11; Reduce the aperture of fresh air pipeline control valve 12 through signal controlling, simultaneously through control vent gas treatment pipe-line control valve 13 apertures, the vent gas treatment amount of flows such as minimizing; Otherwise, when oxygen concentration less than 12% the time, through the PLC programme-control; Reduce the aperture of tail gas return line control valve 11; Increase the aperture of fresh air pipeline control valve 12, increase vent gas treatment pipe-line control valve 13 equivalent apertures simultaneously, the vent gas treatment amount of flows such as increase.
Desiccant-filled in the drying box, can adopt activated alumina or molecular sieve desiccant etc., the drying box size can be confirmed according to the vent flow and the time of staying, can adopt one or more levels form.Purifier is made up of dedusting and deodoration system, can adopt the form of biofilter or biological filtering tower combined working.
The above is merely the preferred embodiment of the utility model, is not the utility model is done any pro forma qualification.Any change that is equal to, modification or differentiation etc. that all those skilled in the art utilize the technical scheme of the utility model that the foregoing description is made all still belong in the scope of the utility model technical scheme.
Claims (8)
1. the refuse disposal installation of the biological dewatered secondary pollution of recycle is characterized in that:
Comprise sealed reactor, percolate collector, air inlet system and exhaust gas treating device;
Offer exhaust port on the sealed reactor, its internal upper part fixed installation shower, the bottom is installed with porous support plate and leachate collection pipe;
Percolate collector links to each other with leachate collection pipe and shower through pipeline respectively, establishes submersible sewage pump in the gatherer, realizes back spray in order to connect shower;
Air inlet system comprises air intake pipeline and air intake blower fan; The air intake pipeline is fixedly mounted on the below of the porous support plate in the sealed reactor; And the sidewall that passes sealed reactor is connected on the air outlet of air intake blower fan, and the air inlet of air intake blower fan links to each other with atmosphere through pipeline;
Exhaust gas treating device comprises tail gas recycle pipe, drying box, vent gas treatment blower fan and purifier; The tail gas recycle pipe links to each other with exhaust port and drying box import respectively; The outlet of drying box links to each other with the air inlet of air intake blower fan and vent gas treatment blower fan respectively through pipeline, and the air outlet of vent gas treatment blower fan links to each other with purifier through pipeline.
2. the refuse disposal installation of the biological dewatered secondary pollution of recycle according to claim 1 is characterized in that:
Said drying box outlet is provided with a threeway A, and the bypass of threeway A links to each other with air intake blower fan through the tail gas return line, and another bypass links to each other with the vent gas treatment blower fan through the vent gas treatment pipeline; Be equiped with tail gas recycle control valve and vent gas treatment pipe-line control valve on tail gas return line and the vent gas treatment pipeline respectively.
3. the refuse disposal installation of the biological dewatered secondary pollution of recycle according to claim 2 is characterized in that:
Installing one threeway B on the air inlet of said air intake blower fan, the bypass of threeway B links to each other with the tail gas recycle control valve, and another bypass links to each other with a fresh air pipeline control valve, and fresh air pipeline control valve links to each other with atmosphere.
4. the refuse disposal installation of the biological dewatered secondary pollution of recycle according to claim 3 is characterized in that:
Installing one oxygen concentration sensor between the air inlet of said threeway B and air intake blower fan; Be equiped with temperature sensor in the said reactor; Said tail gas recycle control valve, vent gas treatment pipe-line control valve, fresh air pipeline control valve, oxygen concentration sensor and temperature sensor link to each other with a PLC cyclelog respectively; Controller receives and handles the feedback information of oxygen concentration sensor and temperature sensor, and controls the aperture of tail gas recycle control valve, vent gas treatment pipe-line control valve and fresh air pipeline control valve according to feedback information.
5. the refuse disposal installation of the biological dewatered secondary pollution of recycle according to claim 4 is characterized in that:
Said tail gas recycle control valve, vent gas treatment pipe-line control valve and fresh air pipeline control valve are magnetic valve.
6. according to the refuse disposal installation of the biological dewatered secondary pollution of arbitrary described recycle among the claim 1-5, it is characterized in that:
Said drying box is one or more levels drying box.
7. according to the refuse disposal installation of the biological dewatered secondary pollution of arbitrary described recycle among the claim 1-5, it is characterized in that:
Said sealed reactor is the totally-enclosed groove type reactor.
8. according to the refuse disposal installation of the biological dewatered secondary pollution of arbitrary described recycle among the claim 1-5, it is characterized in that:
Said air intake pipeline adopts porous floral tube form, and the porous floral tube is fixed on the below of porous support plate, and the aperture size is 1cm, and spacing is 2-3cm, evenly distributes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203051492U CN202212406U (en) | 2011-08-19 | 2011-08-19 | Garbage treatment device for cyclically utilizing organisms to dry secondary pollutants |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203051492U CN202212406U (en) | 2011-08-19 | 2011-08-19 | Garbage treatment device for cyclically utilizing organisms to dry secondary pollutants |
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| CN202212406U true CN202212406U (en) | 2012-05-09 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102357510A (en) * | 2011-08-19 | 2012-02-22 | 城市建设研究院 | Method and apparatus for controlling secondary pollutants in biodrying of mixed domestic waste |
| CN103056148A (en) * | 2013-01-15 | 2013-04-24 | 东莞市伟烨船舶设备有限公司 | Efficient non-peculiar-smell kitchen waste disposal method |
| CN103736713A (en) * | 2014-01-17 | 2014-04-23 | 东莞市粤源包装有限公司 | Zero-energy-consumption household garbage biochemical treatment system |
| CN104941986A (en) * | 2015-06-30 | 2015-09-30 | 华南理工大学 | Organic garbage continuous drying device |
| CN106336105A (en) * | 2016-10-09 | 2017-01-18 | 上海市政工程设计研究总院（集团）有限公司 | Method for vertical solar intensified deep biological drying of sludge |
| CN106799121A (en) * | 2017-03-08 | 2017-06-06 | 广东益康生环保设备有限公司 | A kind of waste gas minimizing processing equipment of organic matter degradation machine |
| CN116020849A (en) * | 2023-03-02 | 2023-04-28 | 青岛汇君环境能源工程有限公司 | Horizontal processor suitable for kitchen garbage |
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2011
- 2011-08-19 CN CN2011203051492U patent/CN202212406U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102357510A (en) * | 2011-08-19 | 2012-02-22 | 城市建设研究院 | Method and apparatus for controlling secondary pollutants in biodrying of mixed domestic waste |
| CN103056148A (en) * | 2013-01-15 | 2013-04-24 | 东莞市伟烨船舶设备有限公司 | Efficient non-peculiar-smell kitchen waste disposal method |
| CN103736713A (en) * | 2014-01-17 | 2014-04-23 | 东莞市粤源包装有限公司 | Zero-energy-consumption household garbage biochemical treatment system |
| CN103736713B (en) * | 2014-01-17 | 2016-06-01 | 广东源盛生态环保科技有限公司 | The domestic refuse biochemical treatment system of a kind of zero energy consumption |
| CN104941986A (en) * | 2015-06-30 | 2015-09-30 | 华南理工大学 | Organic garbage continuous drying device |
| CN104941986B (en) * | 2015-06-30 | 2017-08-25 | 华南理工大学 | A kind of organic waste continuity drying unit |
| CN106336105A (en) * | 2016-10-09 | 2017-01-18 | 上海市政工程设计研究总院（集团）有限公司 | Method for vertical solar intensified deep biological drying of sludge |
| CN106799121A (en) * | 2017-03-08 | 2017-06-06 | 广东益康生环保设备有限公司 | A kind of waste gas minimizing processing equipment of organic matter degradation machine |
| CN116020849A (en) * | 2023-03-02 | 2023-04-28 | 青岛汇君环境能源工程有限公司 | Horizontal processor suitable for kitchen garbage |
| CN116020849B (en) * | 2023-03-02 | 2023-11-07 | 青岛汇君环境能源工程有限公司 | Horizontal processor suitable for kitchen garbage |
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Owner name: CHINA URBAN CONSTRUCTION DESIGN + RESERRCH INSTITU Free format text: FORMER NAME: CHINA URBAN CONSTRUCTION DESIGN + RESEARCH INSTITUTE |
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Address after: 100120 Beijing Xicheng District Dewai Street No. 36 Patentee after: China Urban Construction Design & Reserrch Institute Co., Ltd. Address before: 100120 Beijing Xicheng District Dewai Street No. 36 Patentee before: Urban Construction Design & Research Institute |
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