CN207468303U - Doughnut combined type artificial water plant river repair system - Google Patents
Doughnut combined type artificial water plant river repair system Download PDFInfo
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- CN207468303U CN207468303U CN201720884784.8U CN201720884784U CN207468303U CN 207468303 U CN207468303 U CN 207468303U CN 201720884784 U CN201720884784 U CN 201720884784U CN 207468303 U CN207468303 U CN 207468303U
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- doughnut
- aquatic weed
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- water plant
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/40—Protecting water resources
- Y02A20/402—River restoration
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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
Abstract
The utility model provides a kind of doughnut combined type artificial water plant river repair system, including sequentially connected air inlet pipeline, supply air line and multiple artificial aquatic weed units, microbe stuffing is set on hollow-fibre membrane tow, the two combines and forms multiple artificial aquatic weed units, or it is combined and is formed by doughnut artificial aquatic weed unit and artificial aquatic weed unit, both the characteristic of hollow-fibre membrane tow had been utilized, the specific surface area of artificial aquatic weed is increased further through microbe stuffing, it is supplied oxygen again by the microorganism that supply air line is attachment, improve the absorption property of microorganism, shorten the biofilm period of microorganism remediation in river corridor restoration engineering；The combination collocation of microbe stuffing and hollow-fibre membrane tow can preferably build aerobic and oxygen alternate environment in river corridor restoration engineering, realize synchronous nitration and denitrification.
Description
Technical field
The utility model is related to artificial aquatic weed ecological restoration technical field, specifically, being related to a kind of using doughnut
Artificial aquatic weed unit is formed, then be made of multiple artificial aquatic weed units and oxygen system as carrier attached microbial, for people
Work river and ecological restoration of lakes or the doughnut combined type artificial water plant river repair system of reconstruction.
Background technology
Industrial development also brings some inevitable industrial pollution while urban development is pushed.It is for example, artificial
The industrial wastewater containing a large number of nutrients and sanitary sewage of discharge are flowed into river and lake, cause river and water body in lake
In the nutrient concentrations such as N, P are excessive namely body eutrophication, and which results in aquatic ecosystem species distribution is unbalance,
In a phenomenon be exactly to accelerate algae in water body and other planktonic organisms breed rapidly, destroy the substance and energy of system
Flowing, causes the pollution of water quality.In the social now of water resources shortage, this problem, which seems, to be particularly acute.
Regarding to the issue above using Physical, chemical method or bioanalysis progress river regulation in previous technology, but
In real process, these methods all there is technical issues that：
1) Physical：Dredging is typically carried out manually to change water and salvage the water plant of superfluous breeding, then be aided with machine
Tool removes algae, but this artificial administration way of Physical, and cost is higher, and the rate manually salvaged is far away from the speed of algae reproduction
Degree, causes this kind of mode governance efficiency relatively low；
2) chemical method：Generally use chemical flocculation or the fixed method of heavy metal chemistry, chemical flocculation are to utilize substance
Colloid chemistry property makes wawter bloom biology occur to agglomerate and is deposited to water bottom, then recycled, but since river and lake belong to
In open water body, water is difficult to accurately estimate, the stirring intensity of coagulation is also difficult to control, and the fixation of heavy metal chemistry is because of river
Heavy metal in stream bed mud can enter water body with ionic state or certain reference state, so will a huge sum of money using the fixed method of chemistry
Category is combined with bed mud, inhibits its release to reduce influence of the heavy metal to the ecosystem in river, lake, but whether chemical
Flocculation or the fixed method of heavy metal chemistry all there are cost it is excessively high while, be also easy to secondary pollution be caused to ask water quality
Topic.
Based on physics and chemical method administer there are the problem of, propose restoration of the ecosystem method in the prior art, be divided into original position
Biological prosthetic and Ex situ bioremediation, wherein, biology in situ reparation is mainly to utilize the plant or culture cultivated, the micro- life being inoculated with
The vital movement of object shifts water pollutant, converted and is degraded, is purified water body.Specifically, using cultivating
The metabolism of plant absorb the part heavy metal of nutriments such as N, P in water body to control body eutrophication,
Meanwhile the organic pollution in water removal is removed in the assimilation and dissimilation of microorganism.But since water plant is to original water quality, bed mud
Situation is more demanding, and dependence is strong, and the conditions such as load, the seasonal temperature influence that is easily hit, therefore can not ensure nature
The repairing effect of lower river regulation.So the specific surface area with bigger is proposed in the prior art, is more conducive to microorganism attachment
Artificial aquatic weed, microorganism apposition growth biofilm on artificial aquatic weed, formed biomembrane.In the prior art, there is one kind with hollow
Tunica fibrosa is the artificial aquatic weed of carrier, and it can be characteristic that microorganism attached thereto supplies oxygen to have, but it the shortcomings that be：
One side artificial aquatic weed uses hollow fiber film thread as material, and adhesive rate of the microorganism on hollow fiber film thread is not most
It is good, so in real process, need just to put into a large amount of inoculating microbe microbial inoculums into water body at biofilm initial stage, to shorten biofilm
Period；On the other hand, microbe stuffing also needs to additionally add aeration aerating facility in prior art.
As described above, this artificial aquatic weed by the use of hollow fiber film thread as material of the prior art, there are carriers
In the form of a single, bad to the adaptability of microorganism, the biofilm period is long, and runs the additional a large amount of dispensing microbial bacterial agents of initial stage needs
Etc. technical problems, rehabilitation cost it is higher.
Utility model content
In order to solve the above-mentioned technical problem the utility model is made, the purpose is to provide one kind by increasing micro- life
Object filler improves adhesive rate of the hollow fiber film thread as microbe carrier, more conducively microbial immobilization, improves simultaneously
To the adaptability of multiple-microorganism, and reduce and hollow fiber film thread is used to be needed as the technique of artificial aquatic weed in the prior art
The dosage of microbial bacterial agent is launched in the early stage, solve the problem of in the prior art of high cost, the biofilm period is long.
To achieve these goals, the utility model provides a kind of doughnut combined type artificial water plant river reparation system
System, doughnut combined type artificial water plant river repair system include sequentially connected air inlet pipeline, supply air line and
The multiple artificial aquatic weed units being set in supply air line, each artificial aquatic weed unit include artificial aquatic weed unit beam and are set to
The unit block end of the artificial aquatic weed unit beam one or both ends, the unit block end and the supply air line pair
It connects, what each artificial aquatic weed unit beam was closed including one or more hollow-fibre membrane tow and with the hollow fiber film thread binding
Microbe stuffing, each artificial aquatic weed unit includes a doughnut artificial aquatic weed unit again and a microbe stuffing is artificial
Water plant unit, the doughnut artificial aquatic weed unit include hollow-fibre membrane tow and are set to the hollow-fibre membrane tow
The unit block end of one or both ends, the microbe stuffing artificial aquatic weed unit include microbe stuffing and are set to described
The unit block end of microbe stuffing one or both ends, the unit block end are docked with the supply air line.
It is further preferred that the microbe stuffing for polypropylene fibre, polyvinyl, polyurethane foam, one kind in carbon fibre or
A combination thereof.
It is further preferred that the microbe stuffing be twist pigtail formula, cord type, it is ring-like in a kind of or combination.
Preferably, the microbe stuffing can be set to inside and/or the surrounding of the hollow-fibre membrane tow.
Preferably, the microbe stuffing and the hollow-fibre membrane tow serpentine cross or checkerboard type arranged crosswise.
Preferably, the supply air line can be frame structure, and the multiple artificial aquatic weed unit is equally spacedly set to
In the supply air line.
It can be with it is further preferred that one end of the air inlet pipeline can be provided with air blower, on the air inlet pipeline
It is provided with gas flowmeter and inlet end air gauge.Oxygen supply situation can be indicated by flowmeter and air gauge in real time, it can basis
Status of implementation adjusts air blower, to adjust oxygen-supplying amount.
Further preferably, the end of the supply air line is sequentially provided with shut-off valve, check-valves and gas supply end air pressure
Table.
As described above with practice it is found that doughnut combined type artificial water plant river described in the utility model is repaiied
In complex system, combined to form multiple artificial aquatic weed units or by hollow with microbe stuffing by hollow-fibre membrane tow
The artificial aquatic weed unit that the ring packing rope that fiber artificial water plant unit and being through by ring packing is formed on nylon rope is formed
Combination is formed, and had both remained characteristic of the hollow-fibre membrane tow as microbe carrier, people is increased further through microbe stuffing
The specific surface area of work water plant, then by supply air line be that the microorganism that is attached on artificial aquatic weed supplies oxygen, improve microorganism
Metaboilic level shortens the biofilm period of microorganism remediation in river corridor restoration engineering, microbe stuffing and hollow-fibre membrane
The combination collocation of tow can preferably build aerobic and the oxygen even alternate environment of anaerobism, profit in river corridor restoration engineering
In realizing synchronous nitration and denitrification during artificial aquatic weed unit Shu Yunhang；Also, according to the saturating of hollow-fibre membrane tow
The needs of bacteria metabolism in oxygen ability and microbe stuffing adjust the valve on inlet end pipeline and supply air line end
Gate oxygen-supplying amount processed.
Description of the drawings
Fig. 1 is schematic diagram, shows doughnut combined type artificial water plant river described in the utility model repair system
Structure；
Fig. 2 is schematic diagram, shows a reality of doughnut combined type artificial water plant river shown in FIG. 1 repair system
Apply the structure of artificial aquatic weed unit in example；
Fig. 3 is sectional view, shows a reality of doughnut combined type artificial water plant river shown in Fig. 2 repair system
Apply the section of artificial aquatic weed unit in example；
Fig. 4 is schematic diagram, shows a reality of doughnut combined type artificial water plant river shown in Fig. 2 repair system
Apply the snakelike arrangement of artificial aquatic weed unit in example；
Fig. 5 is schematic diagram, shows a reality of doughnut combined type artificial water plant river shown in Fig. 2 repair system
Apply the tessellation structure of artificial aquatic weed unit in example；
Fig. 6 is schematic diagram, shows doughnut combined type artificial water plant river shown in FIG. 1 repair system another
Doughnut artificial aquatic weed unit and the structure of microbe stuffing artificial aquatic weed unit interval arrangement in embodiment.
Specific embodiment
Doughnut combined type artificial water plant river reparation system described in the utility model described below with reference to the accompanying drawings
The embodiment of system.Those of ordinary skill in the art will recognize, in the feelings of the spirit and scope without departing from the utility model
Under condition, the described embodiments may be modified in various different ways.Therefore, attached drawing and description are inherently said
Bright property, it is not intended to limit the scope of the claims.In addition, in the present specification, attached drawing is drawn not in scale, and
And identical reference numeral represents identical part.
Fig. 1 is schematic diagram, shows doughnut combined type artificial water plant river described in the utility model repair system
Structure.Fig. 2 is schematic diagram, shows artificial water in doughnut combined type artificial water plant river shown in FIG. 1 repair system
The structure of careless unit.Fig. 3 is sectional view, shows doughnut combined type artificial water plant river shown in Fig. 2 repair system
The section of artificial aquatic weed unit in one embodiment.As shown in Figure 1, doughnut combined type artificial water described in the utility model
Careless river repair system includes sequentially connected air inlet pipeline 1, supply air line 2 and multiple artificial aquatic weed units 4.
Referring to Fig. 2 and Fig. 3, each artificial aquatic weed unit 4 is in soft column, in one embodiment of the utility model,
Each artificial aquatic weed unit 4 includes artificial aquatic weed unit beam 41 and is set to the unit block end at 41 both ends of artificial aquatic weed unit
First 42, unit block end 42 is docked with supply air line 2, to fix artificial aquatic weed unit 4.In other implementations of the utility model
In example, artificial aquatic weed unit can also be arranged to only setting unit component end 42 at one end, be not provided with unit block end 42
One end use sealing form, to save space and cost.It, can also be according to tool in the different embodiments of the utility model
River that body is implemented, the river width in lake, the depth of water, the conditions such as control flood and drain flooded fields and pollution level, flow condition, water quality will
It asks, changes the size of artificial aquatic weed unit beam 41, that is, when the river width in river, lake is wider, mean depth is deeper, and
When heavy contamination, each artificial aquatic weed unit 4 can also expand the size of artificial aquatic weed unit beam 41 or even add multiple water
Careless unit beam 41.
Artificial aquatic weed unit beam 41 again including no less than one hollow-fibre membrane tow 411 and with hollow-fibre membrane tow
With reference to microbe stuffing 412.In the embodiment of the utility model, microbe stuffing 412 can be polypropylene fibre filler, dimension
The surface tool large specific surface area of synthetic fibre filler, polypropylene fibre or polyvinyl filler, the characteristics of conducive to microorganism colonization, but the reality of the utility model
It is without being limited thereto to apply example.Microbe stuffing 412 can be to twist pigtail decline biologic packing material, and twisting the decline surface of biologic packing material of pigtail has table
Area is big, and the characteristics of conducive to microorganism colonization, but the embodiment of the utility model is without being limited thereto.
It is different according to the pattern of the microbe stuffing actually used, microbe stuffing 412 and hollow-fibre membrane tow 411
Combination may be a variety of.For example, referring to Fig. 3, when hollow-fibre membrane tow 411 declines 412 knot of biologic packing material with twisting pigtail
During conjunction, microbe stuffing 412 wraps up the outside of hollow-fibre membrane tow 411.Fig. 4 is schematic diagram, show it is shown in Fig. 2 in
The snakelike arrangement of artificial aquatic weed unit in one embodiment of hollow fiber combined type artificial water plant river repair system.Fig. 5
For schematic diagram, show artificial in one embodiment of doughnut combined type artificial water plant river shown in Fig. 2 repair system
The tessellation structure of water plant unit.Referring to Fig. 4 and Fig. 5, when hollow-fibre membrane tow and polypropylene fibre filler or polyvinyl filler
With reference to when, filler and hollow-fibre membrane tow serpentine cross arrangement or checkerboard type arranged crosswise.In the implementation of the utility model
In example, a kind of or combination in polypropylene fibre, polyvinyl, polyurethane foam, carbon fibre may be used in microbe stuffing 412, and,
Form can be twist pigtail formula, cord type, it is ring-like in a kind of or combination.
Fig. 6 is schematic diagram, shows doughnut combined type artificial water plant river shown in FIG. 1 repair system another
Doughnut artificial aquatic weed unit and the structure of microbe stuffing artificial aquatic weed unit interval arrangement in embodiment.As shown in fig. 6,
In another embodiment of doughnut combined type artificial water plant river described in the utility model repair system, artificial aquatic weed
Unit 4 includes a doughnut artificial aquatic weed unit 44 and a microbe stuffing artificial aquatic weed unit 45, doughnut people
Work water plant unit 44 includes hollow-fibre membrane tow 441 and the unit group for being set to 441 one or both ends of hollow-fibre membrane tow
Part end 42, the one or both ends of the hollow fiber film thread membrane cavity inside end are penetrated through with supply air line, ensure oxygen/air
Membrane cavity can be entered and be transmitted to outside membrane cavity through fenestra.Microbe stuffing artificial aquatic weed unit 45 includes microbe stuffing 451
With the unit block end 42 for being set to 451 one or both ends of microbe stuffing, doughnut artificial aquatic weed unit 44 and micro- life
Object packing artificial water plant unit 45 is all docked by unit block end 42 with supply air line 2, and in the reality of the utility model
It applies in example, the 45 alternate setting of doughnut artificial aquatic weed unit 44 and microbe stuffing artificial aquatic weed unit.
One end of air inlet pipeline 1 is provided with air blower 5, and air blower 5 is supplied for system, can also be set on air inlet pipeline 1
There are gas flowmeter 6 and inlet end air gauge 7.Oxygen supply situation can be indicated by flowmeter and air gauge in real time, it can be according to reality
Situation adjustment air blower 5 is applied, to change oxygen-supplying amount.Meanwhile the end of supply air line 2 is disposed with shut-off valve 8, check-valves 9
With exhaust end air gauge 10.
In doughnut artificial aquatic weed river repair system practice described in the utility model, hollow fiber film thread
The one or both ends of beam, which with glue do sealing and handle and fix, to be tightened, then the film wire beam after tightening is placed in cast encapsulating cavity
Encapsulating is completed, forms artificial aquatic weed unit 4；Or the one or both ends of hollow-fibre membrane tow do sealing with glue and handle and fix
It tightens, forms doughnut artificial aquatic weed unit 44, ring packing is through formation ring packing rope, ring packing rope on nylon rope
One or both ends with glue do sealing and handle and fix and tighten, form microbe stuffing artificial aquatic weed unit 45, doughnut
The combination of artificial aquatic weed unit 44 and microbe stuffing artificial aquatic weed unit 45 forms artificial aquatic weed unit 4.Pass through unit group again
Artificial aquatic weed unit 4 is set on the supply air line 2 by part end 42, and is connected with supply air line 2 and be placed on the suitable of river
Work as position.Aeration aerating is then turned on, runs repair system.It is supplied by air blower 5 for system, gas flow is by with valve
Gas flowmeter 6 is adjusted, and inlet end air pressure is indicated by inlet end air gauge 7, and gas enters supply air line 2 and passes through artificial aquatic weed list
The unit block end 42 of member enters the membrane cavity of hollow-fibre membrane tow, then is diffused into water body by the fenestra on film wire beam.
Check-valves 9 on the end 3 of supply air line prevents gas backstreaming, and residual gas is discharged finally by shut-off valve 8, supply air line
End air pressure is indicated by exhaust end air gauge 10.
As described above with practice it is found that doughnut combined type artificial water plant river described in the utility model is repaiied
In complex system, combined to form multiple artificial aquatic weed units with microbe stuffing by hollow-fibre membrane tow, be both utilized hollow
The characteristic of tunica fibrosa tow, increases the reference area of artificial aquatic weed further through microbe stuffing, then by supply air line is attached
The microorganism oxygen supply improves the absorption property of microorganism, shortens the extension of microorganism remediation in river corridor restoration engineering
The film period；In addition, according to the needs of bacteria metabolism in the oxygen flow ability and microbe stuffing of hollow-fibre membrane tow,
Adjust the valve control oxygen-supplying amount on inlet end pipeline and supply air line end.
It is described in an illustrative manner above with reference to attached drawing according to doughnut combined type artificial described in the utility model
Water plant river repair system.It will be understood by those skilled in the art, however, that the hollow fibre proposed for above-mentioned the utility model
Combined type artificial water plant river repair system is tieed up, various change can also be made on the basis of the utility model content is not departed from
Into.Therefore, the scope of protection of the utility model should be determined by the content of appended claims.
Claims (8)
- A kind of 1. doughnut combined type artificial water plant river repair system, which is characterized in that the doughnut combined type people Work water plant river repair system includes sequentially connected air inlet pipeline, supply air line and the multiple people being set in supply air line Work water plant unit, each artificial aquatic weed unit include artificial aquatic weed unit beam and be set to the artificial aquatic weed unit Shu Yiduan or The unit block end at both ends, the unit block end are docked with the supply air line, and each artificial aquatic weed unit beam includes One or more hollow-fibre membrane tow and the microbe stuffing closed with the hollow fiber film thread binding, each artificial aquatic weed list Member is again artificial including a doughnut artificial aquatic weed unit and a microbe stuffing artificial aquatic weed unit, the doughnut Water plant unit includes hollow-fibre membrane tow and is set to the unit block end of the hollow-fibre membrane tow one or both ends, The microbe stuffing artificial aquatic weed unit includes microbe stuffing and the list for being set to the microbe stuffing one or both ends First component end.
- 2. doughnut combined type artificial water plant river as described in claim 1 repair system, which is characterized in that micro- life Object filler is polypropylene fibre, a kind of or combination in polyvinyl, polyurethane foam, carbon fibre.
- 3. doughnut combined type artificial water plant river as described in claim 1 repair system, which is characterized in that micro- life Object filler be twist pigtail formula, cord type, it is ring-like in a kind of or combination.
- 4. doughnut combined type artificial water plant river as described in claim 1 repair system, which is characterized in that micro- life Object filler is set to inside and/or the surrounding of the hollow-fibre membrane tow.
- 5. doughnut combined type artificial water plant river as described in claim 1 repair system, which is characterized in that micro- life Object filler and hollow-fibre membrane tow serpentine cross arrangement or checkerboard type arranged crosswise.
- 6. doughnut combined type artificial water plant river as described in claim 1 repair system, which is characterized in that the gas supply Pipeline is frame structure, and the multiple artificial aquatic weed unit is equally spacedly set in the supply air line.
- 7. doughnut combined type artificial water plant river as described in claim 1 repair system, which is characterized in that the air inlet One end of pipeline is provided with air blower, and gas flowmeter and inlet end air gauge are additionally provided on the air inlet pipeline.
- 8. doughnut combined type artificial water plant river as described in claim 1 repair system, which is characterized in that the gas supply The end of pipeline is sequentially provided with shut-off valve, check-valves and gas supply end air gauge.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720884784.8U CN207468303U (en) | 2017-07-20 | 2017-07-20 | Doughnut combined type artificial water plant river repair system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720884784.8U CN207468303U (en) | 2017-07-20 | 2017-07-20 | Doughnut combined type artificial water plant river repair system |
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| CN207468303U true CN207468303U (en) | 2018-06-08 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109368814A (en) * | 2018-12-12 | 2019-02-22 | 中国科学院南京地理与湖泊研究所 | Bionical reed root hole coupling denitrification denitrification system and heavy polluted water restorative procedure |
| CN110563150A (en) * | 2019-09-23 | 2019-12-13 | 广东河海工程咨询有限公司 | Biological algae removal method based on proliferation of microorganisms and zooplankton |
| CN111153502A (en) * | 2020-01-10 | 2020-05-15 | 南京公诚节能新材料研究院有限公司 | Telescopic carbon fiber ecological grass |
| CN111470613A (en) * | 2020-03-23 | 2020-07-31 | 无锡碧泓达环境科技有限公司 | Ecological purification system for river regulation |
-
2017
- 2017-07-20 CN CN201720884784.8U patent/CN207468303U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109368814A (en) * | 2018-12-12 | 2019-02-22 | 中国科学院南京地理与湖泊研究所 | Bionical reed root hole coupling denitrification denitrification system and heavy polluted water restorative procedure |
| CN109368814B (en) * | 2018-12-12 | 2023-09-12 | 中国科学院南京地理与湖泊研究所 | Bionic reed root hole coupling denitrification system and heavy pollution water body restoration method |
| CN110563150A (en) * | 2019-09-23 | 2019-12-13 | 广东河海工程咨询有限公司 | Biological algae removal method based on proliferation of microorganisms and zooplankton |
| CN111153502A (en) * | 2020-01-10 | 2020-05-15 | 南京公诚节能新材料研究院有限公司 | Telescopic carbon fiber ecological grass |
| CN111470613A (en) * | 2020-03-23 | 2020-07-31 | 无锡碧泓达环境科技有限公司 | Ecological purification system for river regulation |
| CN111470613B (en) * | 2020-03-23 | 2023-03-10 | 无锡碧泓达环境科技有限公司 | Ecological purification system for river regulation |
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