CN108002669A - A kind of road is used for the rainwater biology delaying basin for removing removing heavy metals - Google Patents

A kind of road is used for the rainwater biology delaying basin for removing removing heavy metals Download PDF

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Publication number
CN108002669A
CN108002669A CN201810056226.1A CN201810056226A CN108002669A CN 108002669 A CN108002669 A CN 108002669A CN 201810056226 A CN201810056226 A CN 201810056226A CN 108002669 A CN108002669 A CN 108002669A
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CN
China
Prior art keywords
heavy metal
delaying basin
rainwater
filter column
overflow well
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.)
Pending
Application number
CN201810056226.1A
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Chinese (zh)
Inventor
杨利伟
张爽
龙朋成
江旺
刘璐洁
于点
刘丽君
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Changan University
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Changan University
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Publication date
Application filed by Changan University filed Critical Changan University
Priority to CN201810056226.1A priority Critical patent/CN108002669A/en
Publication of CN108002669A publication Critical patent/CN108002669A/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/10Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/10Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
    • E03F5/101Dedicated additional structures, interposed or parallel to the sewer system
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • C02F1/281Treatment of water, waste water, or sewage by sorption using inorganic sorbents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • C02F1/283Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/20Heavy metals or heavy metal compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/001Runoff or storm water
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/08Multistage treatments, e.g. repetition of the same process step under different conditions
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/32Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

It is used for the rainwater biology delaying basin for removing removing heavy metals the invention discloses a kind of road, biological delaying basin is arranged on the side of perforate curb, and the top of biological delaying basin is arranged on the junction of biological delaying basin and highway not higher than the perforate on perforate curb, impervious barrier;Biological delaying basin includes layer of plants, filter layer, transition zone and drainage blanket successively from top to bottom;Perforated drain pipe is arranged in drainage blanket, and overflow well is arranged on the side of biological delaying basin, lower end and the rain pipe unicom of overflow well, and heavy metal Filter column is arranged on the bottom of overflow well, and positioned at the top of rain pipe;Level height residing for heavy metal Filter column is not higher than drainage blanket, and upper end is connected with perforated drain pipe, and lower end is equipped with drainpipe, and the lumen loading of heavy metal Filter column has the replaceable filter core for being used to adsorb heavy metal.The present invention has the heavy metal in rainwater very high removal rate, and can continue to remove the heavy metal in rainwater.

Description

A kind of road is used for the rainwater biology delaying basin for removing removing heavy metals
Technical field
The invention belongs to rainwater treatment technical field, and in particular to a kind of road is used for the rainwater biology for removing removing heavy metals Delaying basin.
Background technology
With China's expanding economy and the continuous improvement of living standards of the people, automobile comes into average family, more next More automobiles drive into highway.Due to the discharge of vehicle exhaust, the leakage of fuel and the abrasion of tire, highway pavement rainwater footpath The concentration of heavy metal is very big in stream, enters to be seeped into soil and migrates, can serious polluted underground water.How rainfall runoff is preferably removed In heavy metal, be the problem of we should pay close attention to now.
Biological delaying basin is preferable to the retention effect of heavy metal, and wherein absorption of the coating to heavy metal plays a major role. But soil filler has certain saturation cycle, the saturation cycle of filler can be extended by gathering in the method for plant, but have Research shows that delay of the soil filler to heavy metal is generally 88%~97%, and accumulation of the heavy metal in plant only has 0.5%~3.3%, absorption of the root system to heavy metal is apparently higher than rhizome position, if so unit area in biological delaying basin Plant products are relatively low, then realize that the regeneration of filler saturation is just highly difficult.Once soil filler saturation, will be unable to the weight in rainwater Metal continues Adsorption.
The content of the invention
To solve problems of the prior art, it is used to remove weight it is an object of the present invention to provide a kind of road The rainwater biology delaying basin of metal, the present invention have the heavy metal in rainwater very high removal rate, and can continue to remove rain Heavy metal in water.
The purpose of the present invention is achieved through the following technical solutions:
A kind of road is used for the rainwater biology delaying basin for removing removing heavy metals, including perforate curb, biological delaying basin, perforation Drainpipe, overflow well, heavy metal Filter column, impervious barrier and rain pipe, biological delaying basin are arranged on the side of perforate curb, biology Level height at the top of delaying basin is arranged on the connection of biological delaying basin and highway not higher than the perforate on perforate curb, impervious barrier Place;Biological delaying basin includes layer of plants, filter layer, transition zone and drainage blanket successively from top to bottom;Perforated drain pipe is arranged on row In water layer, overflow well is arranged on the side of biological delaying basin, lower end and the rain pipe unicom of overflow well, and heavy metal Filter column is set In the bottom of overflow well;Level height residing for heavy metal Filter column is not higher than drainage blanket, and upper end is connected with perforated drain pipe, lower end Equipped with drainpipe, the water outlet of drainpipe is located in overflow well, and the lumen loading of heavy metal Filter column, which has, replaceable to be used to inhale The filter core of attached heavy metal.
Transition zone and drainage blanket are disposed as side height, and the low incline structure in side, overflow well is arranged on transition zone and row The relatively low side of water layer, level height residing for heavy metal Filter column are not higher than the level height of drainage blanket minimum point.
Perforate curb and overflow well are separately positioned on the opposite both sides of biological delaying basin.
Heavy metal Filter column is the open tubular column with upper bottom, and being arranged in parallel with several inside it from top to bottom will a huge sum of money Belong to the partition plate that Filter column inner cavity is divided into snakelike cavity.
It is hinged between the upper bottom of heavy metal Filter column and the cylinder of heavy metal Filter column lower part.
It by granular activated carbon and sodium titanate nanofiber according to mass ratio is 25 that filter core, which is,:1 mixing being uniformly mixed Thing.
The filler of filter layer is fine sand;Transition zone filler is coarse sand;Drainage blanket filler is gravel.
Drainpipe is equipped with the check valve prevented in aqueous reflux to heavy metal Filter column.
Beneficial effects of the present invention are as follows:
The present invention's can get up to discharge into biological delaying basin by perforate curb by the rainwater-collecting on highway, and biology is detained Pond is filtered the rainwater being collected into by layer of plants, filter layer and transition zone, and the rainwater after filtering enters drainage blanket, perforation Drainpipe is arranged in drainage blanket, therefore the rainwater in drainage blanket can enter perforated drain pipe by the hole on perforated drain pipe The rainwater collected is imported heavy metal Filter column by inside, perforated drain pipe, and heavy metal Filter column adsorption filtration is fallen in rainwater Heavy metal, then the rainwater for removing heavy metal is drained into overflow well, overflow well is filtered by the rainwater being pooled to and through heavy metal The water of column filtering drains into rain pipe, and the water in overflow well is discharged into municipal storm sewer system by rain pipe;Due to heavy metal mistake Level height residing for filter column is not higher than drainage blanket, therefore in the filter process of rainwater, can fully rely on gravity carry out flowing and Filtering, without using other power, has the characteristics that energy conservation and environmental protection;The lumen loading of heavy metal Filter column it is replaceable be used to inhale The filter core of attached heavy metal, according to experimental test data, when filter core absorption reaches saturation, can regularly replace filter core so that this hair It is bright to continue to remove the heavy metal in rainwater.
Brief description of the drawings
Fig. 1 is the plan that road of the present invention is used to remove the rainwater biology delaying basin of removing heavy metals.
Fig. 2 is the profile that road of the present invention is used to remove the rainwater biology delaying basin of removing heavy metals.
Fig. 3 is the profile of the heavy metal Filter column of Fig. 1.
In figure, 1- perforate curbs, 2- biology delaying basins, 21- layer of plants, 22- filter layers, 23- transition zones, 24- drainage blankets, 3- overflow wells, 4- heavy metal Filter columns, 41- partition plates, 42- drainpipes, 5- perforated drain pipes, 6- impervious barriers, 7- rain pipes.
Embodiment
It is next below in conjunction with the accompanying drawings that the present invention is further illustrated.
As shown in FIG. 1 to 3, road of the invention is used for the rainwater biology delaying basin for removing removing heavy metals, including perforate Curb 1, biological delaying basin 2, perforated drain pipe 5, overflow well 3, heavy metal Filter column 4, impervious barrier 6 and rain pipe 7, biology are detained Pond 2 is arranged on the side of perforate curb 1, and the top of biological delaying basin 2 is set not higher than the perforate on perforate curb 1, impervious barrier 6 In the junction of biological delaying basin 2 and highway;Biological delaying basin 2 includes layer of plants 21, filter layer 22, transition successively from top to bottom Layer 23 and drainage blanket 24, the filler of filter layer 22 is fine sand, and 23 filler of transition zone is coarse sand, and 24 filler of drainage blanket is gravel;Wear Hole drainpipe 5 is arranged in drainage blanket 24, and overflow well 3 is arranged on the side of biological delaying basin 2, the lower end of overflow well 3 and rainwater 7 unicom of pipe, heavy metal Filter column 4 are arranged on the bottom of overflow well 3;Level height residing for heavy metal Filter column 4 is not higher than draining Layer 24, upper end is connected with perforated drain pipe 5, and lower end is equipped with drainpipe 42, and the water outlet of drainpipe 42 is located in overflow well 3, row Water pipe 42 is equipped with the check valve in aqueous reflux to the heavy metal Filter column 4 prevented in overflow well, the inner cavity of heavy metal Filter column 4 Filled with the replaceable filter core for being used to adsorb heavy metal, filter core is according to quality by granular activated carbon and sodium titanate nanofiber Than for 25:1 mixture being uniformly mixed.
Such as Fig. 2, in of the invention, transition zone 23 and drainage blanket 24 are disposed as side height, the low incline structure in side, overflow Well 3 is arranged on transition zone 23 and the relatively low side of drainage blanket 24, and level height residing for heavy metal Filter column 4 is not higher than drainage blanket 24 The level height of minimum point;Perforate curb 1 and overflow well 3 are separately positioned on the opposite both sides of biological delaying basin 2, by increasing capacitance it is possible to increase rain The trickling distance of water, is conducive to the filtration, purification to rainwater, perforate curb 1 be arranged on transition zone 23 and drainage blanket 24 it is higher one Side, overflow well 3 are arranged on transition zone 23 and the relatively low side of drainage blanket 24, it is automatic under gravity to be so conducive to rainwater Flowing, additionally it is possible to prevent ponding.
Such as Fig. 3, heavy metal Filter column 4 is the open tubular column with upper bottom, is arranged in parallel with from top to bottom inside it some A partition plate 41 that 4 inner cavity of heavy metal Filter column is divided into snakelike cavity, can so increase the trickling containing heavy metal rainwater Path, can come into full contact with filter core, can achieve the purpose that preferably to filter out heavy metal;The upper bottom of heavy metal Filter column 4 with It is hinged between the cylinder of 4 lower part of heavy metal Filter column, be so conducive to replace filter core, heavy metal Filter column 4 can be made Persistently remove the heavy metal in rainwater.
The road of the present invention is used to go the rainwater biology delaying basin of removing heavy metals to carry out the heavy metal in runoff by force The removal of change, the sorbing material of use are the mixtures of granular activated carbon and sodium titanate nanofiber so that heavy metal Filter column 4 99% is up to the removal rate of heavy metal in rainwater, can prevent the heavy metal of high concentration from entering to be seeped into soil to migrate, impurely Lower water;Wherein sodium titanate nanofiber has big specific surface area, simple efficient synthetic method, unique mesoporous layer structure And excellent ion-exchange performance, it is a kind of preferable new adsorbent, experiment shows, granular activated carbon and sodium titanate are received Rice fiber is 25 by weight:1 is mixed, it adsorbs 80 times that heavy metal amount is that same weight only has granular activated carbon, the gold Belong to Filter column and 99% is up to the removal rate of most of heavy metal in rainwater;The present invention is provided with the heavy metal with snakelike inner cavity Filter column, when the Filter column of identical size carries out heavy metal adsorption, adds the time of contact of rainwater and adsorption particle, more preferably Remove removing heavy metals;Meanwhile biological delaying basin is stored rainfall runoff, permeates, purified, the wind to form waterlogging is reduced Danger.
Embodiment
In the present embodiment, the size of biological delaying basin 2 is:It is 5 meters long, it is 3 meters wide;Biological delaying basin 2 is followed successively by from top to bottom Layer of plants 21, filter layer 22, transition zone 23 and drainage blanket 24;Wherein, 22 filler of filter layer is fine sand, the content of organic matter 3%, outside Nutrition Soil is mixed, pH is neutrality;23 filler of transition zone is coarse sand;24 filler of drainage blanket is gravel.Perforated drain pipe 5 is placed in drainage blanket In 24 gravels.Overflow well 3 is arranged on the opposite side of biological delaying basin 2, and rain pipe 7 is placed in the bottom of overflow well 3.
Heavy metal Filter column 4 is placed in overflow well 3, laterally attached with perforated drain pipe 5, is set in heavy metal Filter column 4 Filter column is divided into four gallery type sorption channels by three parallel partition plates 41, three parallel partition plates 41, filler particles in passage The weight ratio of the mixture of activated carbon and sodium titanate nanofiber, granular activated carbon and sodium titanate nanofiber is 25:1;Rainwater Stream flows into overflow well 3 after heavy metal filter column 4 from drainpipe 42, then rain pipe 7 is flowed into from overflow well 3, and then is discharged into city Political affairs pipe network.It can be opened on heavy metal Filter column 4, when absorption reaches saturation, can manually take out and replace adsorption material therein Material.

Claims (8)

1. a kind of road is used for the rainwater biology delaying basin for removing removing heavy metals, it is characterised in that including perforate curb (1), life Thing delaying basin (2), perforated drain pipe (5), overflow well (3), heavy metal Filter column (4), impervious barrier (6) and rain pipe (7), biology Delaying basin (2) is arranged on the side of perforate curb (1), and the level height at the top of biological delaying basin (2) is not higher than perforate curb (1) On perforate, impervious barrier (6) is arranged on the junction of biological delaying basin (2) and highway;Biological delaying basin (2) is from top to bottom successively Including layer of plants (21), filter layer (22), transition zone (23) and drainage blanket (24);Perforated drain pipe (5) is arranged on drainage blanket (24) in, overflow well (3) is arranged on the side of biological delaying basin (2), lower end and rain pipe (7) unicom of overflow well (3), a huge sum of money Belong to the bottom that Filter column (4) is arranged on overflow well (3);Level height residing for heavy metal Filter column (4) is not higher than drainage blanket (24), Upper end is connected with perforated drain pipe (5), and lower end is equipped with drainpipe (42), and the water outlet of drainpipe (42) is located in overflow well (3), The lumen loading of heavy metal Filter column (4) has the replaceable filter core for being used to adsorb heavy metal.
2. rainwater biology delaying basin according to claim 1, it is characterised in that transition zone (23) and drainage blanket (24) are all provided with Side height, the low incline structure in side are set to, overflow well (3) is arranged on transition zone (23) and the relatively low side of drainage blanket (24).
3. rainwater biology delaying basin according to claim 1 or 2, it is characterised in that perforate curb (1) and overflow well (3) It is separately positioned on the opposite both sides of biological delaying basin (2).
4. rainwater biology delaying basin according to claim 1, it is characterised in that heavy metal Filter column (4) is with upper and lower The open tubular column at bottom, is arranged in parallel with several inside it and heavy metal Filter column (4) inner cavity is divided into snakelike cavity from top to bottom Partition plate (41).
5. rainwater biology delaying basin according to claim 4, it is characterised in that the upper bottom of heavy metal Filter column (4) with again It is hinged between the cylinder of metal filtration column (4) lower part.
6. rainwater biology delaying basin according to claim 1, it is characterised in that filter core is by granular activated carbon and sodium titanate Nanofiber is 25 according to mass ratio:1 mixture being uniformly mixed.
7. rainwater biology delaying basin according to claim 1, it is characterised in that the filler of filter layer (22) is fine sand;Cross It is coarse sand to cross layer (23) filler;Drainage blanket (24) filler is gravel.
8. rainwater biology delaying basin according to claim 1, it is characterised in that drainpipe (42), which is equipped with, prevents aqueous reflux Check valve into heavy metal Filter column (4).
CN201810056226.1A 2018-01-20 2018-01-20 A kind of road is used for the rainwater biology delaying basin for removing removing heavy metals Pending CN108002669A (en)

Priority Applications (1)

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CN201810056226.1A CN108002669A (en) 2018-01-20 2018-01-20 A kind of road is used for the rainwater biology delaying basin for removing removing heavy metals

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Application Number Priority Date Filing Date Title
CN201810056226.1A CN108002669A (en) 2018-01-20 2018-01-20 A kind of road is used for the rainwater biology delaying basin for removing removing heavy metals

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108797757A (en) * 2018-07-15 2018-11-13 天津大学 A kind of buried biological delaying basin and its method for arranging based on original greenbelt
CN108811928A (en) * 2018-07-30 2018-11-16 大江环境股份有限公司 A kind of rainwater flower case with rainwater purification function
CN109160677A (en) * 2018-09-12 2019-01-08 重庆交通大学 Pavement runoff ecological purification system
CN109758877A (en) * 2019-03-11 2019-05-17 山东海岱园林集团有限公司 A kind of road heavy metal ion collection device and road heavy metal ion enrichment method
CN109809632A (en) * 2019-02-01 2019-05-28 江苏大学 A kind of biological delaying basin improving denitrogenation dephosphorizing ability
CN110467316A (en) * 2019-08-21 2019-11-19 南华大学 A kind of rainwater is detained and processing unit
CN113105069A (en) * 2021-04-06 2021-07-13 北京建筑大学 Runoff rainwater processing system
CN114411929A (en) * 2021-12-29 2022-04-29 浙江绿凯环保科技股份有限公司 Biological detention pond

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Publication number Priority date Publication date Assignee Title
CN104652596A (en) * 2013-11-20 2015-05-27 北京泰宁科创雨水利用技术股份有限公司 Rainwater bio-retention filtering device
CN105625549A (en) * 2016-03-16 2016-06-01 南京林业大学 Multifunctional system for rainwater infiltration, collection and storage and purification of sponge city
CN206233338U (en) * 2016-09-30 2017-06-09 南昌大学 A kind of biological delaying basin that can dynamically permeate
CN107021539A (en) * 2017-03-13 2017-08-08 河海大学 It is a kind of can catching heavy metal porous pavement hybrid system
CN107143021A (en) * 2017-06-06 2017-09-08 武汉钢铁有限公司 A kind of biological delaying basin
CN207845448U (en) * 2018-01-20 2018-09-11 长安大学 A kind of road is used to go the rainwater biology delaying basin of removing heavy metals

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104652596A (en) * 2013-11-20 2015-05-27 北京泰宁科创雨水利用技术股份有限公司 Rainwater bio-retention filtering device
CN105625549A (en) * 2016-03-16 2016-06-01 南京林业大学 Multifunctional system for rainwater infiltration, collection and storage and purification of sponge city
CN206233338U (en) * 2016-09-30 2017-06-09 南昌大学 A kind of biological delaying basin that can dynamically permeate
CN107021539A (en) * 2017-03-13 2017-08-08 河海大学 It is a kind of can catching heavy metal porous pavement hybrid system
CN107143021A (en) * 2017-06-06 2017-09-08 武汉钢铁有限公司 A kind of biological delaying basin
CN207845448U (en) * 2018-01-20 2018-09-11 长安大学 A kind of road is used to go the rainwater biology delaying basin of removing heavy metals

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108797757A (en) * 2018-07-15 2018-11-13 天津大学 A kind of buried biological delaying basin and its method for arranging based on original greenbelt
CN108811928A (en) * 2018-07-30 2018-11-16 大江环境股份有限公司 A kind of rainwater flower case with rainwater purification function
CN109160677A (en) * 2018-09-12 2019-01-08 重庆交通大学 Pavement runoff ecological purification system
CN109809632A (en) * 2019-02-01 2019-05-28 江苏大学 A kind of biological delaying basin improving denitrogenation dephosphorizing ability
CN109758877A (en) * 2019-03-11 2019-05-17 山东海岱园林集团有限公司 A kind of road heavy metal ion collection device and road heavy metal ion enrichment method
CN110467316A (en) * 2019-08-21 2019-11-19 南华大学 A kind of rainwater is detained and processing unit
CN113105069A (en) * 2021-04-06 2021-07-13 北京建筑大学 Runoff rainwater processing system
CN114411929A (en) * 2021-12-29 2022-04-29 浙江绿凯环保科技股份有限公司 Biological detention pond
CN114411929B (en) * 2021-12-29 2023-12-05 浙江绿凯环保科技股份有限公司 Biological detention pond

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Application publication date: 20180508

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