CN109589745B - Can on-line measurement VOCs concentration VOCs adsorption plant - Google Patents
Can on-line measurement VOCs concentration VOCs adsorption plant Download PDFInfo
- Publication number
- CN109589745B CN109589745B CN201811226355.7A CN201811226355A CN109589745B CN 109589745 B CN109589745 B CN 109589745B CN 201811226355 A CN201811226355 A CN 201811226355A CN 109589745 B CN109589745 B CN 109589745B
- Authority
- CN
- China
- Prior art keywords
- pipe
- vertical tube
- vocs
- adsorption plant
- air inlet
- 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.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/06—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention discloses can on-line measurement VOCs concentration VOCs adsorption plant, belong to exhaust-gas treatment field.Can on-line measurement VOCs concentration VOCs adsorption plant, including adsorption plant further includes cleaning equipment;The cleaning equipment includes air inlet pipe and an air outlet pipe, and the angle between the air inlet pipe and an air outlet pipe is at 0~90 °;The air inlet pipe is reducer, and the escape pipe straight up, is provided with auger, is provided with organic solution in the cleaning equipment in the escape pipe;The present invention by being provided with cleaning equipment and adsorption plant, thus in exhaust gas VOCS and other pollutants carry out thoroughly purification absorption.
Description
Technical field
The present invention relates to exhaust-gas treatment field, more specifically to can the VOCs absorption of on-line measurement VOCs concentration set
It is standby.
Background technique
Industrial common adsorbent has: silica gel, activated alumina, active carbon, molecular sieve etc., in addition there are also be directed to certain
Absorption of certain compositional selection and the adsorbent material developed;
Silica gel is the silicic acid polymerization composition granule of a kind of hard, amorphous chain and reticular structure, and molecular formula is
SiO2.nH2O is a kind of hydrophilic polar adsorbent.It is the aqueous solution with sulfuric acid treatment sodium metasilicate, generates gel, and will
It is washed after removing sodium sulphate through drying, and vitreous silica gel is just obtained, it is mainly used for dry, admixture of gas and petroleum group
The separation etc. divided.Silica gel industrially is divided into gross porosity and two kinds of pore.Silochrom is inhaled under conditions of relative humidity is saturated
For attached amount up to 80% or more of adsorbent weight, and under low humidity conditions, adsorbance is significantly less than Kiselgel A;
Activated alumina is made of the hydrate thermal dehydration of aluminium, its property depends on the structure of initial hydroxide
State, generally impure Al2O3, partially hydrated unbodied porous structure substance, wherein not only having amorphous
Gel, there are also the crystal of hydroxide.Due to its capillary porosity duct surface activity with higher, therefore also known as active oxidation
Aluminium.It has stronger affinity to water, is the adsorbent of a kind of pair of minor amount of water depth drying.Under certain operating conditions, it
Drying depth up to -70 DEG C of dew point or less;
Active carbon is manufactured after the carbon raw materials such as charcoal, shell, coal are carbonized, activated.Activation method can be divided into two
Major class, i.e. medicament activation method and gas activation.Medicament activation method is exactly that the chemical drugs such as zinc chloride, potassium sulfide are added in raw material
Product, heating is carbonized and is activated in inert atmosphere.Gas activation is that activated carbon raw material is added in inert atmosphere
Heat is passed through vapor, carbon dioxide, flue gas, air etc. usually after 700 DEG C or less removing volatile components, and 700 ~
Reaction is carried out in 1200 DEG C of temperature ranges makes its activation.Active carbon contains many pore constructions so having excellent adsorption energy
Power.Thus its purposes is throughout various aspects such as water process, decoloration, gas absorptions.
But after these materials absorption exhaust gas, since surface is attached to dirt, purification efficiency is caused to reduce, and then cause to give up
Gas purification is not thorough.
Summary of the invention
To solve the above problems, the present invention adopts the following technical scheme that.
Can on-line measurement VOCs concentration VOCs adsorption plant, including adsorption plant further includes cleaning equipment;Described is net
Changing equipment includes air inlet pipe and an air outlet pipe, and the angle between the air inlet pipe and an air outlet pipe is at 0~90 °;The air inlet pipe
For reducer, the escape pipe straight up, is provided with auger, is provided in the cleaning equipment in the escape pipe
Organic solution;
The adsorption plant includes absorption vertical tube, upper bend pipe, lower bend pipe and driving device, the absorption riser upper end
One end of bend pipe in connection, lower end connect one end of lower bend pipe, and upper bend pipe connects driving device with the other end of lower bend pipe, described
The lower end of absorption vertical tube connect escape pipe, the upper end of the described absorption vertical tube connects fresh-air duct;
The driving device includes rotary shaft, one end of the multiple support rods of rotation axis connection, the support
The other end of bar is connected with ball support;
Magnet is provided in the ball support, the driving device is provided with electromagnet far from one end of absorption vertical tube,
The lower end of the driving device is provided with dirty bulb;
Spaced set has multiple elastic rings to the absorption vertical tube inner wall from top to bottom, and the elastic ring upper surface is set
It is equipped with frictional layer, the lower bend pipe bottom is provided with powder tube;
The elastic ring lower surface is connected with one end of one end and metal bar of spring, and the other end of spring is connected to suction
On attached vertical tube inner wall, the inside of spring is adsorbed and is additionally provided with electromagnetism iron hoop switch on vertical tube inner wall, outside the absorption vertical tube
Multiple electromagnetism iron hoops are equidistantly provided in portion and elastic ring same level.
Preferably, VOCs concentration detector is provided in the air inlet pipe, the VOCs concentration detector connects control
Device processed, the auger and rotary shaft are separately connected first motor and the second motor, and the control device is also electrically connected
One motor and the second motor.
Beneficial effect
Compared with the prior art, the present invention has the advantages that the present invention is by being provided with cleaning equipment and adsorption plant, from
And in exhaust gas VOCS and other pollutants carry out thoroughly purification absorption.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of adsorption plant of the present invention;
Fig. 2 is the structural schematic diagram of cleaning equipment of the present invention;
Fig. 3 is the structural schematic diagram of ball support of the present invention;
Fig. 4 is the structural schematic diagram in Fig. 1 of the present invention at A.
Figure label explanation:
1, cleaning equipment;2, adsorption plant;3, air inlet pipe;4, escape pipe;5, auger;6, vertical tube is adsorbed;7, upper bend pipe;8,
Lower bend pipe;9, driving device;10, fresh-air duct;11, rotary shaft;12, support rod;13, ball support;14, magnet;15, the first electromagnetism
Iron;16, dirty bulb;17, elastic ring;18, frictional layer;19, powder tube;20, spring;21, metal bar;22, the second electromagnet is opened
It closes;23, the second electromagnetism iron hoop.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention;Technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description;Obviously;Described embodiments are only a part of the embodiments of the present invention;Instead of all the embodiments.It is based on
Embodiment in the present invention;It is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment;It shall fall within the protection scope of the present invention.
Please refer to Fig. 1-4, can on-line measurement VOCs concentration VOCs adsorption plant, including adsorption plant 2 further includes purification
Equipment 1;Cleaning equipment 1 includes air inlet pipe 3 and escape pipe 4, and the angle between air inlet pipe 3 and escape pipe 4 is at 0~90 °;Air inlet pipe
3 be reducer, and escape pipe 4 straight up, is provided with auger 5, is provided with organic solution in cleaning equipment 1 in escape pipe 4;
Adsorption plant 2 includes absorption vertical tube 6, upper bend pipe 7, lower bend pipe 8 and driving device 9, and absorption 6 upper end of vertical tube connects
One end of bend pipe 7, lower end connect one end of lower bend pipe 8, and upper bend pipe 7 connects driving device 9 with the other end of lower bend pipe 8, adsorbs
The lower end of vertical tube 6 connects escape pipe 4, and the upper end of absorption vertical tube 6 connects fresh-air duct 10.
Driving device 9 includes rotary shaft 11, and rotary shaft 11 connects one end of multiple support rods 12, the other end of support rod 12
It is connected with ball support 13.
Magnet 14 is provided in ball support 13, driving device 9 is provided with electromagnet 15 far from one end of absorption vertical tube 6, drives
The lower end of device 9 is provided with dirty bulb 16.
Spaced set has multiple elastic rings 17 to absorption 6 inner wall of vertical tube from top to bottom, and 17 upper surface of elastic ring, which is provided with, rubs
Layer 18 is wiped, lower 8 bottom of bend pipe is provided with powder tube 19.
17 lower surface of elastic ring is connected with one end of spring 20 and one end of metal bar 21, and the other end of spring 20 is connected to
It adsorbs on 6 inner wall of vertical tube, the inside of spring 20, adsorbs and be additionally provided with electromagnetism iron hoop switch 22 on 6 inner wall of vertical tube, adsorb vertical tube 6
17 same level of outside and elastic ring on be equidistantly provided with multiple electromagnetism iron hoops 23.
VOCs concentration detector is provided in air inlet pipe 3, VOCs concentration detector connects control device, auger 5 and rotation
Axis 11 is separately connected first motor and the second motor, and control device is also electrically connected first motor and the second motor.
Working principle:
As shown in Fig. 2, exhaust gas is entered in organic solution by the air inlet pipe reduced first, and then enter straight up
Escape pipe is capable of increasing the speed that gas enters organic solution using the air inlet pipe of decrement, and then will not return from air inlet pipe,
At the same time, Concentration Testing can be come more and then pass information to control dress by the VOCs concentration detector being arranged in air inlet pipe
Set, control device and then control auger revolving speed, accelerate the mixing of organic solution and exhaust gas and accelerate exhaust gas rising and from into
Tracheae enters the speed in organic solution;
Then exhaust gas is entered in adsorption plant by escape pipe, as shown in Figure 1, during exhaust gas rises, constantly
There is adsorbing sphere at the uniform velocity to fall, when adsorbing sphere is fallen, can touch on elastic ring, the frictional layer on elastic ring can be by adsorbing sphere
Surface is scratched, so that the adsorption efficiency of adsorbing sphere is improved, and elastic ring also plays the effect of speed limit, in addition, elastic
Annular strain, compressed spring, metal bar touches magnet ring switch at this time, so that electromagnetism iron hoop be made to work, is provided in adsorbing sphere
Iron ball will be slow whereabouts under the graviational interaction of magnet ring, frictional layer scratches adsorbing sphere table so resistance of the adsorbing sphere in elastic ring
The powder in face can drop into powder tube, because absorption vertical tube cross-sectional sizes and adsorbing sphere are almost big, exhaust gas is bound to
Contact multiple adsorbing spheres;And absorption ball surface dirt attachment, so adsorption efficiency is higher;The adsorbing sphere of whereabouts drops into down curved
Guan Zhong, under the impact that the adsorbing sphere then under the action of driving device, and one by one is fallen, adsorbing sphere can gradually on
It rises, and then driving device can will get in adsorbing sphere transport one by one, then fall on from upper bend pipe in absorption vertical tube, in addition,
Magnet is provided in ball support, but if adsorbing sphere is larger, attraction is weaker, when adsorbing sphere is smaller, gravitation is larger at this time,
It can then be entrusted away by ball under the action of magnet, when ball support moves to one end far from absorption vertical tube, electromagnet indirect
Work, the frequency of work of electromagnet and the revolving speed of driving device are directly proportional;Electromagnet adsorbs adsorbing sphere at this time, because electric
The attraction of magnet be greater than ball support in magnet, then electromagnet power off, lose magnetism, adsorbing sphere under gravity along
The inner wall of driving device moves in dirty bulb, to remake adsorbing sphere;VOCs concentration detector detects the big of concentration
The small revolving speed that also will affect rotary shaft.
It is described above;It is merely preferred embodiments of the present invention;But scope of protection of the present invention is not limited thereto;
Anyone skilled in the art is in the technical scope disclosed by the present invention;According to the technique and scheme of the present invention and its
It improves design and is subject to equivalent substitution or change;It should be covered by the scope of protection of the present invention.
Claims (2)
1. can on-line measurement VOCs concentration VOCs adsorption plant, including adsorption plant (2), it is characterised in that: further include purification
Equipment (1);The cleaning equipment (1) includes air inlet pipe (3) and escape pipe (4), the air inlet pipe (3) and escape pipe (4)
Between angle at 0~90 °;The air inlet pipe (3) be reducer, the escape pipe (4) straight up, the outlet
It is provided with auger (5) in pipe (4), is provided with organic solution in the cleaning equipment (1);
The adsorption plant (2) includes adsorbing vertical tube (6), upper bend pipe (7), lower bend pipe (8) and driving device (9), described
One end that vertical tube (6) upper end connects upper bend pipe (7) is adsorbed, lower end connects the one end of lower bend pipe (8), upper bend pipe (7) and lower bend pipe
(8) the other end connects driving device (9), and the lower end of the absorption vertical tube (6) connects escape pipe (4), and the absorption is perpendicular
The upper end for managing (6) connects fresh-air duct (10);
The driving device (9) includes rotary shaft (11), and the rotary shaft (11) connects one end of multiple support rods (12),
The other end of the support rod (12) is connected with ball support (13);
It is provided with magnet (14) in the ball support (13), one end setting of the driving device (9) far from absorption vertical tube (6)
Have electromagnet (15), the lower end of the driving device (9) is provided with dirty bulb (16);
Spaced set has multiple elastic rings (17) described absorption vertical tube (6) inner wall from top to bottom, the elastic ring (17)
Upper surface is provided with frictional layer (18), and described lower bend pipe (8) bottom is provided with powder tube (19);
Described elastic ring (17) lower surface is connected with one end of one end and metal bar (21) of spring (20), spring (20) it is another
One end is connected on absorption vertical tube (6) inner wall, the inside of spring (20), is adsorbed and is additionally provided with electromagnetism iron hoop on vertical tube (6) inner wall
It switchs (22), is equidistantly provided with multiple electromagnetism in the outside of the absorption vertical tube (6) and elastic ring (17) same level
Iron hoop (23);
It is provided with adsorbing sphere in adsorption plant (2), the metal ball that can be attracted by magnet (14) is provided in adsorbing sphere.
2. according to claim 1 it is any it is described can on-line measurement VOCs concentration VOCs adsorption plant, it is characterised in that: it is described
Air inlet pipe (3) on be provided with VOCs concentration detector, the VOCs concentration detector connects control device, the auger
(5) and rotary shaft (11) is separately connected first motor and the second motor, and the control device is also electrically connected first motor and
Two motors.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201811226355.7A CN109589745B (en) | 2018-10-22 | 2018-10-22 | Can on-line measurement VOCs concentration VOCs adsorption plant |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201811226355.7A CN109589745B (en) | 2018-10-22 | 2018-10-22 | Can on-line measurement VOCs concentration VOCs adsorption plant |
Publications (2)
Publication Number | Publication Date |
---|---|
CN109589745A CN109589745A (en) | 2019-04-09 |
CN109589745B true CN109589745B (en) | 2019-10-01 |
Family
ID=65957535
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201811226355.7A Active CN109589745B (en) | 2018-10-22 | 2018-10-22 | Can on-line measurement VOCs concentration VOCs adsorption plant |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN109589745B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110508239B (en) * | 2019-09-06 | 2022-10-18 | 河南环碧环保工程设备有限公司 | Efficient adsorbent for organic waste gas and preparation method thereof |
CN112619360A (en) * | 2020-05-08 | 2021-04-09 | 黄龙标 | Unitized self-cleaning type filtering method for organic waste gas treatment |
CN111530235A (en) * | 2020-05-08 | 2020-08-14 | 黄龙标 | High-efficient exhaust gas purification device based on attach magnetic particle absorption type |
CN111744321B (en) * | 2020-07-23 | 2022-05-06 | 佛山市联智裕环保科技有限公司 | Novel oil-containing flue gas adsorption treatment device and use method |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4207084A (en) * | 1977-04-04 | 1980-06-10 | The Bendix Corporation | Single bed separator apparatus |
US5538541A (en) * | 1995-04-03 | 1996-07-23 | On-Demand Environmental Systems Inc. | Apparatus and method for removing volatile organic compounds from an air stream |
CN201750983U (en) * | 2010-06-04 | 2011-02-23 | 承杰有限公司 | Absorption material fluidization rotary purifier |
CN102266705A (en) * | 2010-06-04 | 2011-12-07 | 承杰有限公司 | Absorption material fluidizing convolution purifier |
CN103785265A (en) * | 2014-02-24 | 2014-05-14 | 深圳市泓耀环保有限公司 | Novel indoor air purification device |
CN104707443A (en) * | 2015-01-27 | 2015-06-17 | 福建师范大学 | VOCs tail gas treatment apparatus |
CN206008370U (en) * | 2016-08-24 | 2017-03-15 | 韩志军 | Moving-bed type VOC adsorption/desorption purifiers |
CN107126815A (en) * | 2017-06-22 | 2017-09-05 | 西安交通大学 | A kind of flue gas desulfurization device and method |
CN207462976U (en) * | 2017-10-25 | 2018-06-08 | 天恒涂料有限公司 | A kind of VOC waste gas purification apparatuses for having three to recirculate |
-
2018
- 2018-10-22 CN CN201811226355.7A patent/CN109589745B/en active Active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4207084A (en) * | 1977-04-04 | 1980-06-10 | The Bendix Corporation | Single bed separator apparatus |
US5538541A (en) * | 1995-04-03 | 1996-07-23 | On-Demand Environmental Systems Inc. | Apparatus and method for removing volatile organic compounds from an air stream |
CN201750983U (en) * | 2010-06-04 | 2011-02-23 | 承杰有限公司 | Absorption material fluidization rotary purifier |
CN102266705A (en) * | 2010-06-04 | 2011-12-07 | 承杰有限公司 | Absorption material fluidizing convolution purifier |
CN103785265A (en) * | 2014-02-24 | 2014-05-14 | 深圳市泓耀环保有限公司 | Novel indoor air purification device |
CN104707443A (en) * | 2015-01-27 | 2015-06-17 | 福建师范大学 | VOCs tail gas treatment apparatus |
CN206008370U (en) * | 2016-08-24 | 2017-03-15 | 韩志军 | Moving-bed type VOC adsorption/desorption purifiers |
CN107126815A (en) * | 2017-06-22 | 2017-09-05 | 西安交通大学 | A kind of flue gas desulfurization device and method |
CN207462976U (en) * | 2017-10-25 | 2018-06-08 | 天恒涂料有限公司 | A kind of VOC waste gas purification apparatuses for having three to recirculate |
Also Published As
Publication number | Publication date |
---|---|
CN109589745A (en) | 2019-04-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN109589745B (en) | Can on-line measurement VOCs concentration VOCs adsorption plant | |
TW201228722A (en) | Inorganic sorbents for reduction of mercury emissions | |
CN102019166A (en) | Method for preparing modified attapulgite clay adsorbing material | |
JP2008238163A (en) | Removal method of mercury vapor in gas | |
CN101816922A (en) | Chemically modified chitosan mercury-removing adsorbent and preparation process thereof | |
CN103977761B (en) | A modification method of porous materials capable of efficiently removing air pollutants | |
CN104226055A (en) | Novel wet-process dust remover of drying tower | |
CN104907045A (en) | Efficient carbon dioxide catching material | |
CN106311139B (en) | Carbon-based demercuration adsorbent and preparation method thereof | |
CN106000073B (en) | A kind of environment-protective process for administering boiler smoke | |
CN108031258B (en) | Small flue gas treatment device | |
CN108906006A (en) | It is a kind of can efficient absorption formaldehyde modified graphene sponge preparation method | |
JP2006272329A (en) | Dehumidifying agent and dehumidifying rotor | |
CN107551788A (en) | A kind of exhaust treatment system for workshop of casting | |
CN207025069U (en) | A kind of coal-fired high-temperature flue gas mercury removal device | |
CN106732331A (en) | The method of flying dust adsorbent iodine method of modifying and the modified flying dust adsorbent of iodine and coal-fired flue gas mercury removal | |
CN107262021B (en) | Method for preparing halogen modified fly ash adsorbent | |
CN208642183U (en) | It is a kind of to desorb exhaust treatment system for the indirect thermal of mercurous solid waste and soil treatment | |
CN107344067A (en) | A kind of coal-fired high-temperature flue gas demercuration method and device | |
CN108452777A (en) | A kind of macroreticular resin method of modifying for adsorbing low-concentration sulfur dioxide in air | |
CN107073395B (en) | Method for purifying a fluid | |
CN106994328A (en) | A kind of new adsorbent and preparation method and application | |
CN109759031B (en) | A kind of material and its production technology with high-effective dust-removing function | |
CN112191218A (en) | Method for preparing mercury removal adsorbent by using mechanochemical method halide modified coal-fired fly ash | |
CN112774334A (en) | Metal smelting dust collector |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CP01 | Change in the name or title of a patent holder | ||
CP01 | Change in the name or title of a patent holder |
Address after: 211500 Building A6, 5th Floor, 9 Kechuang Avenue, Liuhe District, Nanjing City, Jiangsu Province Patentee after: Nanjing University environmental planning and Design Institute Group Co., Ltd Address before: 211500 Building A6, 5th Floor, 9 Kechuang Avenue, Liuhe District, Nanjing City, Jiangsu Province Patentee before: ACADEMY OF ENVIRONMENTAL PLANNING & DESIGN CO., LTD. NANJING University |