CN207891202U - A kind of device of waste water dephosphorization - Google Patents
A kind of device of waste water dephosphorization Download PDFInfo
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- CN207891202U CN207891202U CN201820111312.3U CN201820111312U CN207891202U CN 207891202 U CN207891202 U CN 207891202U CN 201820111312 U CN201820111312 U CN 201820111312U CN 207891202 U CN207891202 U CN 207891202U
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- Prior art keywords
- magneto separate
- filter cylinder
- waste water
- dephosphorization
- map
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- 239000002351 wastewater Substances 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 23
- 239000011574 phosphorus Substances 0.000 claims abstract description 23
- 230000001105 regulatory effect Effects 0.000 claims abstract description 9
- 238000001179 sorption measurement Methods 0.000 claims abstract description 8
- 230000004044 response Effects 0.000 claims abstract description 4
- 238000002425 crystallisation Methods 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 8
- 230000008025 crystallization Effects 0.000 claims description 7
- 239000006148 magnetic separator Substances 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 239000010865 sewage Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 7
- 238000004064 recycling Methods 0.000 abstract description 4
- 239000006227 byproduct Substances 0.000 abstract description 3
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 20
- 238000010521 absorption reaction Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 239000003814 drug Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 229940079593 drug Drugs 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000008021 deposition Effects 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000011953 bioanalysis Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000009388 chemical precipitation Methods 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- PXFBZOLANLWPMH-UHFFFAOYSA-N 16-Epiaffinine Natural products C1C(C2=CC=CC=C2N2)=C2C(=O)CC2C(=CC)CN(C)C1C2CO PXFBZOLANLWPMH-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229920000388 Polyphosphate Polymers 0.000 description 1
- 229920000037 Polyproline Polymers 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 159000000013 aluminium salts Chemical class 0.000 description 1
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- CKMXBZGNNVIXHC-UHFFFAOYSA-L ammonium magnesium phosphate hexahydrate Chemical compound [NH4+].O.O.O.O.O.O.[Mg+2].[O-]P([O-])([O-])=O CKMXBZGNNVIXHC-UHFFFAOYSA-L 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 159000000007 calcium salts Chemical group 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- -1 phosphate anion Chemical class 0.000 description 1
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000013268 sustained release Methods 0.000 description 1
- 239000012730 sustained-release form Substances 0.000 description 1
Landscapes
- Water Treatment By Sorption (AREA)
Abstract
The utility model is related to a kind of devices of waste water dephosphorization, and in particular to the device of dephosphorization, phosphorus removal property are excellent in a kind of high-concentration phosphorus-containing wastewater.It is realized using following technical scheme：A kind of device of waste water dephosphorization includes regulating reservoir, MAP crystallizing-dephosphorizings unit and the magnetic absorbing unit being sequentially communicated by pipeline；The MAP crystallizing-dephosphorizings unit is open vertical response tank, and blender, water inlet, water outlet, filter screen, pH on-line control systems, online thermometer and mud mouth are equipped in retort；The magnetic absorbing unit includes adsorption reaction tank body and Magneto separate filter cylinder；Magneto separate filter cylinder can be as needed, and setting is one or more, to increase treating capacity, improve treatment effeciency.The utility model is combined using MAP crystallizing-dephosphorizings unit and magnetic absorbing unit, and total dephosphorization efficiency is more than 99%, makes to achieve the effect that in line, the removal effect stabilization of Phosphorus From Wastewater after high phosphorus sewage disposal, and byproduct is recyclable and recycling.
Description
Technical field
The utility model is related to a kind of devices of waste water dephosphorization, belong to industrial waste water purifying field.
Background technology
Water resource environment protection be now social extensive concern the problem of.With social progress and industrial expansion,
The region that industry is relatively concentrated, the discharge capacity and discharge type of waste water are more and more, are caused to natural water extremely serious
It influences.The especially severe overweight of Phosphorus From Wastewater flows into river, can cause the disasters such as water body red tide, wawter bloom.Therefore, phosphorus is dirty
It includes bioanalysis, chemistry that dye control, which has become China's great environmental protection subject urgently to be resolved hurrily, usually used phosphorus removing method mainly,
Method and absorption method.
Bioanalysis dephosphorization is to absorb and discharge the principle of phosphorus under aerobic and anaerobic condition based on polyP bacteria, passes through aerobic one
The alternate run of anaerobism is come the method for realizing dephosphorization.Biological phosphate-eliminating is a kind of phosphorus removing method of relatively economical, but to having in waste water
Machine object concentration dependent is very strong, when content of organics is relatively low or when phosphorus content is more than 10mg/1 in waste water, water outlet be difficult meet it is steady
Surely reach the requirement of 0.5mg/l Effluent criterias, so to reach stable Effluent criteria, often need that chemical dephosphorization measure is taken
It meets the requirements.
Chemical method dephosphorization is to be generated to be insoluble in the precipitation of water to realize dephosphorization with the phosphorus reaction in chemical reagent and waste water
Method.Most commonly used precipitating reagent is calcium salt, molysite, aluminium salt and the faster inorganic organic composite cation wadding of development now
Solidifying agent etc..Chemical precipitation method has many advantages, such as that management is convenient, floor space is small, with good investment, treatment effeciency is high, but chemical precipitation method
Add that medicament expense is too expensive, and the chemical sludge water content generated is big, dehydration is difficult, it is difficult to handle, easy to produce secondary pollution.
Absorption method dephosphorization be using certain porous or bigger serface solid matter in water phosphate anion it is affine
Power is come the waste water dephosphorization process realized.Phosphorus passes through in the physical absorption of adsorbent surface, ion exchange or surface precipitation process, reality
Existing phosphorus further handles recycling phosphor resource from the separation in waste water by desorbing.Absorption method dephosphorization process is simple, and operation can
It leans on, individual dephosphorization means can be can also be used as chemical method or the necessary complement of bioanalysis dephosphorization.
Utility model content
The utility model overcomes above-mentioned the deficiencies in the prior art, provides a kind of device of dephosphorization in waste water, and the present apparatus is adopted
It is combined with chemical dephosphorization and adsorption and dephosphorization, phosphorus removal property is excellent, of low cost, and repeatability is high, can wide popularization and application.
The utility model is realized using following technical scheme：A kind of device of waste water dephosphorization, including connected successively by pipeline
Logical regulating reservoir, MAP crystallizing-dephosphorizings unit and magnetic absorbing unit；
The water inlet end of the regulating reservoir is equipped with fine fack, grid slit width 0.01-0.02m；
The MAP crystallizing-dephosphorizings unit is open vertical response tank, be equipped in retort blender, water inlet, water outlet,
Filter screen, pH on-line control systems, online thermometer and mud mouth；The retort bottom sidewall is provided with water inlet and mud extraction
Mouthful, bottom is provided with blender, and middle part is provided with filter screen, and upper portion side wall is provided with water outlet；
The magnetic absorbing unit includes adsorption reaction tank body and Magneto separate filter cylinder；The adsorption reaction tank interior is equipped with magnetic
Filter cylinder is detached, side wall upper part is equipped with oral siphon and outlet pipe；The Magneto separate filter cylinder is by a netted filtering cylinder and two sheets
Electromagnet forms, and magnetic suck agent, electric rotating machine are equipped in the Magneto separate filter cylinder；The oral siphon nozzle is located at Magneto separate filter cylinder
Top.
The pH on-line control systems include pH measuring instruments and lye charging device.
The blender is connected with motor.
It is protected using magnetic separator outside the electromagnet, can be powered, can install and remove as needed.
The Magneto separate filter cylinder can be installed and be removed as needed, can be one or more.
Compared with prior art, the utility model has the beneficial effects that：
（1）The dephosphorization reaction unit of the utility model MAP crystallizing-dephosphorizing units is at low cost, and the multiple purposes of set of device may be used also
To remove ammonia nitrogen, the guanite of generation does not cause secondary pollution, or the fertilizer of sustained release N, P, Mg not only.PH On-line Controls
The pH in MAP retort is monitored online in system, ensures that the pH in MAP retort is maintained between 9.0-9.3, if under pH
Drop is then subject to lye adjusting, ensures that pH is constant in reaction system, MAP structures crystalline substance caused by overcoming in MAP crystallization process pH to decline from
Sub- activity declines, and to promote MAP crystallization process, improves MAP deposition efficiencies and crystallisation recoveries.By online in reaction process
Drug in retort and the temperature of sewage reaction system is monitored online in thermometer 27, and temperature is in 15- in holding retort
20 DEG C, improve MAP deposition efficiencies and crystallisation recoveries.
（2）Magneto separate filter cylinder 32 can be as needed in magnetic absorbing unit, and setting is one or more, with increase treating capacity,
Improve treatment effeciency.Magnetic suck after reaction, starts electromagnet Magneto separate 0.5 hour, and Magneto separate filter cylinder can be removed, and scrape
The magnetic flco of absorption, the water purification after discharge absorption.Magneto separate filter cylinder is made of a netted filtering cylinder and two sheet electromagnet, magnetic
Unadsorbed complete magnetic flco, netted filtering cylinder can be filtered, thoroughly remove water body phosphor contaminant, protect again after separation
It is clean to demonstrate,prove outlet pipe water outlet.
（3）It is combined with magnetic absorbing unit by using MAP crystallizing-dephosphorizing units, phosphorus removing is improved by magnetic absorbing unit
Rate, and due to using MAP crystallizing-dephosphorizing units, reduce Phosphorus From Wastewater concentration；Magnetic absorbing unit can be according to actual sewage
Situation and treating capacity carry out one or more levels serial or parallel connection setting, not only improve efficiency, but also stablize and realize high phosphorus waste water reclaiming
Technique of zero discharge, the removal effect of Phosphorus From Wastewater stablizes, and byproduct is recyclable and recycling.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of MAP crystallizing-dephosphorizing units；
Fig. 3 is the structural schematic diagram of embodiment magnetic absorbing unit.
In figure：1 is regulating reservoir, and 2 be MAP crystallizing-dephosphorizing units, and 3 be magnetic absorbing unit, and 21 be blender, and 22 be water inlet
Mouthful, 23 be water outlet, and 24 be filter screen, and 25 be pH on-line control systems, and 26 be mud mouth, and 27 be online thermometer, and 31 be suction
Reaction enclosure tank body, 32 be Magneto separate filter cylinder, and 33 be oral siphon, and 34 be outlet pipe, and 35 be netted filtering cylinder, and 36 be sheet electromagnetism
Iron, 28 be pH measuring instruments, and 29 be lye charging device.
Specific implementation mode
The utility model is described further with attached drawing with reference to embodiments：
Include that the regulating reservoir 1 being sequentially communicated by pipeline, MAP crystallizations remove as shown in Figure 1, a kind of device of waste water dephosphorization
Phosphorus unit 2 and magnetic absorbing unit 3；
The water inlet end of the regulating reservoir 1 is equipped with fine fack, grid slit width 0.01-0.02m；
As shown in Fig. 2, the MAP crystallizing-dephosphorizings unit 2 is open vertical response tank, be equipped in retort blender 21,
Water inlet 22, water outlet 23, filter screen 24, pH on-line control systems 25, mud mouth 26 and online thermometer 27；The retort
Bottom sidewall is provided with water inlet 22 and mud mouth 26, and bottom is provided with blender 21, and middle part is provided with filter screen 24, upper side
Wall is provided with water outlet 23；
As shown in figure 3, the magnetic absorbing unit 3 includes adsorption reaction tank body 31 and Magneto separate filter cylinder 32；The absorption is anti-
Tank body 31 is answered to be internally provided with Magneto separate filter cylinder 32, side wall upper part is equipped with oral siphon 33 and outlet pipe 34；The Magneto separate filter cylinder 32
It is made of a netted filtering cylinder 35 and two sheet electromagnet 36, magnetic suck agent, rotation is equipped in the Magneto separate filter cylinder 32
Motor 33；33 nozzle of the oral siphon is located at 32 top of Magneto separate filter cylinder, and sewage fairly falls in Magneto separate filter cylinder 32, rotation into fashionable
Rotating motor 33 carries out magnetic suck agent in Stirring, with cylinder and comes into full contact with carry out adsorption reaction.
The pH on-line control systems 25 include pH measuring instruments 28 and lye charging device 29.
The blender 21 is connected with motor.
Phosphorous sewage enters regulating reservoir 1, after fine fack filters out larger impurity, enters MAP crystallizations by water inlet 22 and removes
Phosphorus unit 2；The drug of input reaction in retort, and under the stirring of blender 21, fully reacted with the phosphorus in sewage；
PH on-line control systems 25 supervise drug in retort and the pH of sewage reaction system online in reaction process
Control ensures that drug and the pH of sewage reaction system are maintained between 9.0-9.3 in retort, if pH declines, are subject to lye tune
Section ensures that pH is constant in reaction system, and pH in MAP crystallization process is overcome to decline caused MAP configurational ion activity decline, to
Promote MAP crystallization process, improves MAP deposition efficiencies and crystallisation recoveries.
The temperature of drug in retort and sewage reaction system is carried out online by online thermometer 27 in reaction process
Monitoring keeps temperature in retort to improve MAP deposition efficiencies and crystallisation recoveries at 15-20 DEG C.
Magnetic absorbing unit processing time is short, Magneto separate filter cylinder 32 can be as needed, and setting is one or more, to increase place
Reason amount improves treatment effeciency.
Magnetic suck after reaction, starts electromagnet Magneto separate 0.5 hour, and Magneto separate filter cylinder 32 can be removed, and suction is scraped
Attached magnetic flco, the water purification after discharge absorption.
Magneto separate filter cylinder 32 is made of a netted filtering cylinder 35 and two sheet electromagnet 36, for not inhaling after Magneto separate
Attached complete magnetic flco, netted filtering cylinder can filter again, thoroughly remove water body phosphor contaminant, ensure that outlet pipe water outlet is clean
Only.
It is combined eventually by using MAP crystallizing-dephosphorizings unit and magnetic absorbing unit, realizes the zero of high phosphorus waste water reclaiming
Discharge technology, total dephosphorization efficiency are more than 99%, achieve the effect that in line, the removal effect of Phosphorus From Wastewater after making high phosphorus sewage disposal
Stablize, byproduct is recyclable and recycling.
Embodiment described above only expresses the several embodiments of the utility model, and description is more specific and detailed
Carefully, but it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the general of this field
For logical technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these are all
Belong to the scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (5)
1. a kind of device of waste water dephosphorization, which is characterized in that include the regulating reservoir being sequentially communicated by pipeline（1）, MAP crystallization remove
Phosphorus unit（2）And magnetic absorbing unit（3）；
The regulating reservoir（1）Water inlet end be equipped with fine fack, grid slit width 0.01-0.02m；
The MAP crystallizing-dephosphorizings unit（2）For open vertical response tank, retort is interior to be equipped with blender（21）, water inlet（22）、
Water outlet（23）, filter screen（24）, pH on-line control systems（25）, mud mouth（26）With online thermometer（27）；The reaction
Pot bottom side wall is provided with water inlet（22）And mud mouth（26）, bottom is provided with blender（21）, middle part is provided with filter screen
（24）, upper portion side wall is provided with water outlet（23）；
The magnetic absorbing unit（3）Including adsorption reaction tank body（31）With Magneto separate filter cylinder（32）；The adsorption reaction tank body
（31）It is internally provided with Magneto separate filter cylinder（32）, side wall upper part is equipped with oral siphon（33）And outlet pipe（34）；The Magneto separate filter cylinder
（32）By a netted filtering cylinder（35）With two sheet electromagnet（36）Composition, the Magneto separate filter cylinder（32）In be equipped with magnetic
Attached dose, electric rotating machine（37）；The oral siphon（33）Nozzle is located at Magneto separate filter cylinder（32）Top.
2. a kind of device of waste water dephosphorization according to claim 1, which is characterized in that the pH on-line control systems（25）
Including pH measuring instruments（28）With lye charging device（29）.
3. a kind of device of waste water dephosphorization according to claim 1, which is characterized in that the blender（21）It is connected with electricity
Machine.
4. a kind of device of waste water dephosphorization according to claim 1, which is characterized in that the electromagnet（36）Outside uses
Magnetic separator is protected, and can be powered, can be installed and remove as needed.
5. a kind of device of waste water dephosphorization according to claim 1, which is characterized in that the Magneto separate filter cylinder（32）It can root
It installs and removes according to needing, can be one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820111312.3U CN207891202U (en) | 2018-01-23 | 2018-01-23 | A kind of device of waste water dephosphorization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820111312.3U CN207891202U (en) | 2018-01-23 | 2018-01-23 | A kind of device of waste water dephosphorization |
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| Publication Number | Publication Date |
|---|---|
| CN207891202U true CN207891202U (en) | 2018-09-21 |
Family
ID=63544884
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820111312.3U Active CN207891202U (en) | 2018-01-23 | 2018-01-23 | A kind of device of waste water dephosphorization |
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| CN (1) | CN207891202U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110066046A (en) * | 2019-04-12 | 2019-07-30 | 南京华创环境技术研究院有限公司 | A kind of dephosphorization system and phosphorus removing method |
| CN111892227A (en) * | 2020-07-09 | 2020-11-06 | 南昌航空大学 | Process for assisting in strengthening phosphorus-containing wastewater phosphorus removal and phosphorus recovery |
| CN113264631A (en) * | 2021-06-21 | 2021-08-17 | 塔里木大学 | Struvite recovery device and recovery method |
| CN116002824A (en) * | 2022-12-27 | 2023-04-25 | 北京工商大学 | Method for rapidly recycling nitrogen and phosphorus in sewage |
-
2018
- 2018-01-23 CN CN201820111312.3U patent/CN207891202U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110066046A (en) * | 2019-04-12 | 2019-07-30 | 南京华创环境技术研究院有限公司 | A kind of dephosphorization system and phosphorus removing method |
| CN111892227A (en) * | 2020-07-09 | 2020-11-06 | 南昌航空大学 | Process for assisting in strengthening phosphorus-containing wastewater phosphorus removal and phosphorus recovery |
| CN113264631A (en) * | 2021-06-21 | 2021-08-17 | 塔里木大学 | Struvite recovery device and recovery method |
| CN116002824A (en) * | 2022-12-27 | 2023-04-25 | 北京工商大学 | Method for rapidly recycling nitrogen and phosphorus in sewage |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A device for removing phosphorus from wastewater Effective date of registration: 20220914 Granted publication date: 20180921 Pledgee: Postal Savings Bank of China Co.,Ltd. Jincheng Branch Pledgor: SHANXI LYUJIE ENVIRONMENTAL PROTECTION CO.,LTD. Registration number: Y2022140000051 |
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Date of cancellation: 20231017 Granted publication date: 20180921 Pledgee: Postal Savings Bank of China Co.,Ltd. Jincheng Branch Pledgor: SHANXI LYUJIE ENVIRONMENTAL PROTECTION CO.,LTD. Registration number: Y2022140000051 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A device for phosphorus removal from wastewater Granted publication date: 20180921 Pledgee: Postal Savings Bank of China Co.,Ltd. Jincheng Branch Pledgor: SHANXI LYUJIE ENVIRONMENTAL PROTECTION CO.,LTD. Registration number: Y2024980003445 |
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