CN213537649U - Breeding tail water treatment system - Google Patents
Breeding tail water treatment system Download PDFInfo
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- CN213537649U CN213537649U CN202022421990.XU CN202022421990U CN213537649U CN 213537649 U CN213537649 U CN 213537649U CN 202022421990 U CN202022421990 U CN 202022421990U CN 213537649 U CN213537649 U CN 213537649U
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- tank
- tail water
- filtering
- collecting
- filter
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 93
- 238000009395 breeding Methods 0.000 title description 7
- 230000001488 breeding effect Effects 0.000 title description 7
- 238000001914 filtration Methods 0.000 claims abstract description 36
- 239000000945 filler Substances 0.000 claims abstract description 34
- 238000006243 chemical reaction Methods 0.000 claims abstract description 23
- 238000004062 sedimentation Methods 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 239000013049 sediment Substances 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims abstract description 7
- 238000005273 aeration Methods 0.000 claims description 9
- 238000009360 aquaculture Methods 0.000 claims description 7
- 244000144974 aquaculture Species 0.000 claims description 7
- 239000010802 sludge Substances 0.000 claims description 7
- 230000003139 buffering effect Effects 0.000 claims description 4
- 239000010865 sewage Substances 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 7
- 239000002351 wastewater Substances 0.000 description 7
- 238000000746 purification Methods 0.000 description 6
- 238000000926 separation method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 239000003814 drug Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000002781 deodorant agent Substances 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 239000008394 flocculating agent Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 231100001240 inorganic pollutant Toxicity 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000012629 purifying agent Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 208000034699 Vitreous floaters Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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Abstract
The utility model discloses a culture tail water treatment system, which comprises a tail water collecting tank, a pre-sedimentation tank, a reaction tank, a filtering tank, a comprehensive biological treatment tank, a secondary sedimentation tank and a clean water tank which are sequentially communicated through pipelines; the reaction tank is internally provided with a stirring device, the top of the reaction tank is provided with a dosing tank, the dosing tank is communicated with the interior of the reaction tank through a liquid inlet pipe, a plurality of inclined filter plates are arranged in the filter tank along the direction from a water inlet to a water outlet, the edges of the outer sides of the filter plates are provided with elastic buffer cushions, the outer sides of the elastic buffer cushions are contacted with the inner side wall of the filter tank, the bottoms of the filter plates are recessed downwards to form collecting tanks for containing sediments, the side walls of the filter tank are provided with blow-off pipes corresponding to the collecting tanks, and the bottoms of the filter plates; the comprehensive biological treatment tank is internally provided with a filler frame, biological fillers are arranged in the filler frame, the inner side wall of the comprehensive biological treatment tank is provided with a sliding groove, and the outer side of the filler frame is provided with a sliding block which is slidably arranged in the sliding groove.
Description
Technical Field
The utility model relates to a water treatment technical field, concretely relates to breed tail water processing system.
Background
Aquatic products and livestock products are bulk foods which are very popular and necessary for people in China, the market quantity is very large, with the continuous improvement of breeding technologies, the high-input and high-output technologies are more and more mature, the pollution index of wastewater generated in the breeding process is more and more high, the discharge amount of the wastewater is more and more large, and although the pollution degree of the breeding wastewater is lower than that of industrial wastewater, the phenomenon of water quality eutrophication is easily caused by the direct discharge of the breeding wastewater, and the natural environment is damaged.
The wastewater generated in the culture process has large discharge amount, contains a large amount of toxic and harmful organic substances such as residual baits, excrement, biological corpses and the like, has high nitrogen and phosphorus indexes in the wastewater, and contains a large amount of solid matters in the wastewater. Most of the existing aquaculture tail water treatment systems adopt a static physical precipitation treatment technology, the treatment effect is poor, the water body is not thoroughly purified, and the treatment efficiency is low.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem existing in the background technology, the utility model provides a breeding tail water treatment system, its purification treatment is effectual, and purification efficiency is high, and the practicality is stronger.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a culture tail water treatment system, which comprises a tail water collecting tank, a pre-sedimentation tank, a reaction tank, a filtering tank, a comprehensive biological treatment tank, a secondary sedimentation tank and a clean water tank which are sequentially communicated through pipelines; a collecting pipeline for collecting tail water discharged from each culture area is arranged on one side of the tail water collecting pool, and a grating plate is arranged in the tail water collecting pool along the flow direction of the tail water; the reaction tank is internally provided with a stirring device, the top of the reaction tank is provided with a dosing tank, the dosing tank is communicated with the inside of the reaction tank through a liquid inlet pipe, the top of the filtering tank is provided with a water inlet, the bottom of the filtering tank is provided with a water outlet, a plurality of inclined filtering plates are arranged in the filtering tank along the direction from the water inlet to the water outlet, the edges of the outer sides of the filtering plates are provided with elastic buffering cushions, the outer sides of the elastic buffering cushions are contacted with the inner side wall of the filtering tank, the bottoms of the filtering plates are downwards sunken to form collecting tanks for containing sediments, the side walls of the filtering tank are provided with blow-off pipes corresponding to the collecting tanks, and the bottoms of the filtering; the bottom in the comprehensive biological treatment tank is provided with an aeration device, the aeration device is connected with an air blower positioned outside the comprehensive biological treatment tank through a connecting pipe, a filler frame is arranged in the comprehensive biological treatment tank, anaerobic biological filler, aerobic biological filler or facultative biological filler is arranged in the filler frame, sliding grooves are formed in the side walls of two opposite sides in the comprehensive biological treatment tank along the vertical direction, and sliding blocks arranged in the sliding grooves in a sliding mode are arranged outside the filler frame.
The improved structure is characterized in that the vibration mechanism comprises a vibration motor, a support rod, a lifting groove, an adjusting rod and a reset spring, the support rod is fixedly arranged on the inner side wall of the filter tank, the lifting groove is formed in the top of the support rod, one end of the adjusting rod is movably arranged in the lifting groove, the other end of the adjusting rod is arranged at the bottom of the filter plate, the reset spring is sleeved on the part, located on the outer side of the lifting groove, of the adjusting rod, and the vibration motor is arranged at the bottom of the filter plate. During the use, under vibrating motor's vibration, the lift inslot up-and-down motion of the regulation pole of filter bottom on the bracing piece, and then drive the steady vibration from top to bottom that goes on of filter, the sediment of filtering off on the filter slides under the up-and-down vibrating force effect to the collecting vat in, avoids the sediment adhesion to cause the jam on the filter.
The improved structure is characterized in that the number of the filter plates is three, and the pore diameters of the three filter plates are gradually reduced along the flowing direction of tail water.
The improved structure is characterized in that a cover body is arranged at the opening of the top of the packing frame in an openable and closable manner, and a lifting handle is arranged at the top of the cover body. The type of the biological filler in the filler frame can be conveniently replaced by opening the cover body so as to adapt to the treatment of tail water of different types; the filler frame can be conveniently taken out from the comprehensive biological treatment pool by lifting the handle.
The further improvement is that the bottom parts of the pre-sedimentation tank, the reaction tank and the secondary sedimentation tank are all provided with sludge hoppers for collecting settled sludge.
The further improvement is that the liquid inlet pipe and the sewage discharge pipe are both provided with control valves.
Compared with the prior art, the utility model discloses following beneficial effect has:
in the utility model, the tail water in the culture area can be collected and centralized by the tail water collecting tank, and larger suspended matters and floating matters in the tail water are removed by the internal grating plate; the solid-liquid separation is carried out on the tail water through the pre-sedimentation tank, so that the subsequent treatment pressure can be well relieved; the tail water enters a reaction tank, agents such as purifying agents, flocculating agents, deodorant and the like are added into the tail water through a dosing tank, and under the action of a stirring device, the agents and the tail water are uniformly mixed, so that macromolecular organic and inorganic pollutants in the tail water are effectively removed, and precipitates are generated; tail water enters a filter tank, is filtered by a plurality of layers of filter plates and then is subjected to solid-liquid separation treatment, and filtered precipitates remain on the filter plates, slide into a collecting tank under the action of self gravity and a vibration mechanism and are periodically discharged by a discharge pipe; the tail water enters the comprehensive biological treatment tank, the type of biological filler added into the filler frame is selected according to the type of the tail water to be treated, the oxygen dissolution amount in the tank is regulated through the aeration device, the treatment effect of the comprehensive biological treatment tank is adjusted to be optimal, small molecular organic matters in the tail water are effectively degraded and converted, the purification treatment effect and the purification treatment efficiency of the tail water are improved, the treated tail water enters the secondary sedimentation tank for solid-liquid separation again, the upper clear water reaches the discharge standard, and the treated tail water can enter the clear water tank for recycling or can be directly discharged to the external environment.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic view of the overall structure of a tail water treatment system for aquaculture of the present invention;
FIG. 2 is a schematic view of the internal structure of the reaction tank of the present invention;
FIG. 3 is a schematic view of the internal structure of the filtering tank of the present invention;
FIG. 4 is an enlarged view taken at A of FIG. 3;
FIG. 5 is a schematic view of the internal structure of the integrated biological treatment tank of the present invention;
FIG. 6 is a cross-sectional view taken along plane B-B of FIG. 5;
wherein, the specific reference numbers are: the device comprises a tail water collecting tank 1, a collecting pipeline 2, a pre-sedimentation tank 3, a reaction tank 4, a stirring device 5, a dosing tank 6, a filtering tank 7, a filtering plate 8, an elastic buffer cushion 9, a collecting tank 10, a sewage discharge pipe 11, a vibrating mechanism 12, a vibrating motor 13, a supporting rod 14, a lifting groove 15, an adjusting rod 16, a reset spring 17, a comprehensive biological treatment tank 18, a sliding groove 19, an aeration device 20, a connecting pipe 21, an air blower 22, a packing frame 23, biological packing 24, a sliding block 25, a cover body 26, a pull handle 27, a secondary sedimentation tank 28, a sludge bucket 29 and a clean water tank 30.
Detailed Description
The embodiment of the utility model discloses a cultivation tail water treatment system, as shown in figure 1, comprising a tail water collecting tank 1, a pre-sedimentation tank 3, a reaction tank 4, a filtering tank 7, a comprehensive biological treatment tank 18, a secondary sedimentation tank 28 and a clean water tank 30 which are sequentially communicated through pipelines; a collecting pipeline 2 for collecting tail water discharged by each culture area is arranged on one side of the tail water collecting pool 1, and a grating plate is arranged in the tail water collecting pool 1 along the flow direction of the tail water; as shown in fig. 2, a stirring device 5 is arranged in a reaction tank 4, a dosing tank 6 is arranged at the top of the reaction tank 4, the dosing tank 6 is communicated with the inside of the reaction tank 4 through a liquid inlet pipe, as shown in fig. 3, a water inlet is arranged at the top of a filtering tank 7, a water outlet is arranged at the bottom of the filtering tank 7, a plurality of inclined filtering plates 8 are arranged in the filtering tank 7 along the direction from the water inlet to the water outlet, an elastic cushion pad 9 is arranged at the outer side edge of each filtering plate 8, the outer side of each elastic cushion pad 9 is in contact with the inner side wall of the filtering tank 7, a collecting tank 10 for containing sediments is formed by downwards sinking the bottom of each filtering plate 8, a drain pipe 11 is arranged on the side wall of the filtering tank; as shown in fig. 5 and 6, an aeration device 20 is arranged at the bottom in the comprehensive biological treatment tank 18, the aeration device 20 is connected with a blower 22 positioned outside the comprehensive biological treatment tank 18 through a connecting pipe 21, a filler frame 23 is arranged in the comprehensive biological treatment tank 18, a biological filler 24 is arranged in the filler frame 23, the biological filler 24 comprises an anaerobic biological filler, an aerobic biological filler and a facultative biological filler, sliding grooves 19 are arranged on the side walls of two opposite sides in the comprehensive biological treatment tank 18 along the vertical direction, and sliding blocks 25 which are slidably arranged in the sliding grooves 19 are arranged outside the filler frame 23.
As shown in fig. 4, the vibration mechanism 12 includes a vibration motor 13, a support rod 14, a lifting groove 15, an adjusting rod 16 and a return spring 17, the support rod 14 is fixedly disposed on the inner side wall of the filtering tank 7, the lifting groove 15 is disposed at the top of the support rod 14, one end of the adjusting rod 16 is movably disposed in the lifting groove 15, the other end of the adjusting rod 16 is mounted at the bottom of the filtering plate 8, the adjusting rod 16 is located at the outer side of the lifting groove 15 and is sleeved with the return spring 17, and the vibration motor 13 is mounted at the. During the use, under vibrating motor 13's vibration, the lift inslot 15 of adjusting pole 16 on bracing piece 14 of filter 8 bottom moves from top to bottom, and then drives the steady vibration from top to bottom that goes on of filter 8, and the sediment that filters off on the filter 8 slides to the collecting vat 10 under the effect of upper and lower vibration power in, avoids the sediment adhesion to cause the jam on filter 8.
Wherein, the filter 8 is provided with three, and three filter 8 reduces along tail water flow direction aperture gradually.
Wherein, the opening at the top of the packing frame 23 is provided with a cover 26 which can be opened and closed, and the top of the cover 26 is provided with a lifting handle 27. The cover body 26 is opened, so that the type of the biological filler 24 in the filler frame 23 can be conveniently replaced, and the biological filler can adapt to the treatment of tail water of different types; the stuffing frame 23 can be conveniently taken out from the comprehensive biological treatment pool 18 by lifting the handle 27.
Wherein, the bottom of the pre-sedimentation tank 3, the bottom of the reaction tank 4 and the bottom of the secondary sedimentation tank 28 are all provided with sludge hoppers 29 for collecting settled sludge.
Wherein, control valves are respectively arranged on the liquid inlet pipe and the sewage draining pipe 11.
In the utility model, the tail water collecting pool 1 can collect and concentrate the tail water in the culture area, and the larger suspended matters and floaters in the tail water are removed by the internal grating plate; the solid-liquid separation is carried out on the tail water through the pre-sedimentation tank 3, so that the subsequent treatment pressure can be well relieved; the tail water enters a reaction tank 4, a purifying agent, a flocculating agent, a deodorant and other medicaments are added into the tail water through a medicament adding box 6, and the medicaments and the tail water are uniformly mixed under the action of a stirring device 5, so that macromolecular organic and inorganic pollutants in the tail water are effectively removed, and precipitates are generated; tail water enters a filter tank 7, is filtered by a plurality of layers of filter plates 8 and then is subjected to solid-liquid separation treatment, and filtered precipitates remain on the filter plates 8, slide into a collecting tank 10 under the action of self gravity and a vibration mechanism 12 and are periodically discharged by a discharge pipe 11; the tail water then enters the comprehensive biological treatment tank 18, the type of biological filler 24 added into the filler frame 23 is selected according to the type of the tail water to be treated, the oxygen dissolution in the tank is regulated through the aeration device 20, the treatment effect of the comprehensive biological treatment tank 18 is adjusted to be optimal, small molecular organic matters in the tail water are effectively degraded and converted, the purification treatment effect and the purification treatment efficiency of the tail water are improved, the treated tail water enters the secondary sedimentation tank 28 for solid-liquid separation again, and the upper clear water reaches the discharge standard, and then the treated tail water can enter the clear water tank 30 for recycling or can be directly discharged to the external environment.
It is right to have used specific individual example above the utility model discloses expound, only be used for helping to understand the utility model discloses, not be used for the restriction the utility model discloses. To the technical field of the utility model technical personnel, the foundation the utility model discloses an idea can also be made a plurality of simple deductions, warp or replacement.
Claims (6)
1. A cultivation tail water treatment system is characterized by comprising a tail water collecting tank, a pre-sedimentation tank, a reaction tank, a filtering tank, a comprehensive biological treatment tank, a secondary sedimentation tank and a clean water tank which are sequentially communicated through pipelines; a collecting pipeline for collecting tail water discharged from each culture area is arranged on one side of the tail water collecting pool, and a grating plate is arranged in the tail water collecting pool along the flow direction of the tail water; the reaction tank is internally provided with a stirring device, the top of the reaction tank is provided with a dosing tank, the dosing tank is communicated with the inside of the reaction tank through a liquid inlet pipe, the top of the filtering tank is provided with a water inlet, the bottom of the filtering tank is provided with a water outlet, a plurality of inclined filtering plates are arranged in the filtering tank along the direction from the water inlet to the water outlet, the edges of the outer sides of the filtering plates are provided with elastic buffering cushions, the outer sides of the elastic buffering cushions are contacted with the inner side wall of the filtering tank, the bottoms of the filtering plates are downwards sunken to form collecting tanks for containing sediments, the side walls of the filtering tank are provided with blow-off pipes corresponding to the collecting tanks, and the bottoms of the filtering; the bottom in the comprehensive biological treatment tank is provided with an aeration device, the aeration device is connected with an air blower positioned outside the comprehensive biological treatment tank through a connecting pipe, a filler frame is arranged in the comprehensive biological treatment tank, anaerobic biological filler, aerobic biological filler or facultative biological filler is arranged in the filler frame, sliding grooves are formed in the side walls of two opposite sides in the comprehensive biological treatment tank along the vertical direction, and sliding blocks arranged in the sliding grooves in a sliding mode are arranged outside the filler frame.
2. The aquaculture tail water treatment system of claim 1, wherein the vibration mechanism comprises a vibration motor, a support rod, a lifting groove, an adjusting rod and a return spring, the support rod is fixedly arranged on the inner side wall of the filter tank, the lifting groove is formed in the top of the support rod, one end of the adjusting rod is movably arranged in the lifting groove, the other end of the adjusting rod is arranged at the bottom of the filter plate, the adjusting rod is sleeved with the return spring at the outer part of the lifting groove, and the vibration motor is arranged at the bottom of the filter plate.
3. The aquaculture tail water treatment system of claim 1 wherein there are three of said filter plates, the three filter plates having a decreasing pore size in the direction of tail water flow.
4. The aquaculture tail water treatment system of claim 1, wherein a cover body is arranged at the opening at the top of the filling frame in an openable and closable manner, and a lifting handle is arranged at the top of the cover body.
5. The aquaculture tail water treatment system of claim 1, wherein the bottom of the pre-sedimentation tank, the bottom of the reaction tank and the bottom of the secondary sedimentation tank are provided with sludge hoppers for collecting settled sludge.
6. The aquaculture tail water treatment system of claim 1, wherein control valves are mounted on the liquid inlet pipe and the sewage discharge pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022421990.XU CN213537649U (en) | 2020-10-27 | 2020-10-27 | Breeding tail water treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022421990.XU CN213537649U (en) | 2020-10-27 | 2020-10-27 | Breeding tail water treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213537649U true CN213537649U (en) | 2021-06-25 |
Family
ID=76500990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022421990.XU Active CN213537649U (en) | 2020-10-27 | 2020-10-27 | Breeding tail water treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213537649U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113461099A (en) * | 2021-07-22 | 2021-10-01 | 林七妹 | Tail water dephosphorization equipment for urban sewage treatment plant |
| CN114772782A (en) * | 2022-04-25 | 2022-07-22 | 福建省水投勘测设计有限公司 | Reaction precipitation device of water supply treatment fluidized bed |
-
2020
- 2020-10-27 CN CN202022421990.XU patent/CN213537649U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113461099A (en) * | 2021-07-22 | 2021-10-01 | 林七妹 | Tail water dephosphorization equipment for urban sewage treatment plant |
| CN114772782A (en) * | 2022-04-25 | 2022-07-22 | 福建省水投勘测设计有限公司 | Reaction precipitation device of water supply treatment fluidized bed |
| CN114772782B (en) * | 2022-04-25 | 2023-11-24 | 福建省水投勘测设计有限公司 | Fluidized bed reaction precipitation device for water supply treatment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force 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 kind of aquaculture tail water treatment system Effective date of registration: 20230213 Granted publication date: 20210625 Pledgee: Industrial Bank Co.,Ltd. Shanghai Zhangyang Sub branch Pledgor: SHANGHAI JIANGZHE ENVIRONMENT ENGINEERING TECHNOLOGY Co.,Ltd. Registration number: Y2023310000029 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20210625 Pledgee: Industrial Bank Co.,Ltd. Shanghai Zhangyang Sub branch Pledgor: SHANGHAI JIANGZHE ENVIRONMENT ENGINEERING TECHNOLOGY Co.,Ltd. Registration number: Y2023310000029 |
|
| PE01 | Entry into force 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 aquaculture wastewater treatment system Granted publication date: 20210625 Pledgee: Industrial Bank Co.,Ltd. Shanghai Zhangyang Sub branch Pledgor: SHANGHAI JIANGZHE ENVIRONMENT ENGINEERING TECHNOLOGY Co.,Ltd. Registration number: Y2024310000036 |