CN215886600U - Integrated efficient precipitation equipment - Google Patents
Integrated efficient precipitation equipment Download PDFInfo
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- CN215886600U CN215886600U CN202121268021.3U CN202121268021U CN215886600U CN 215886600 U CN215886600 U CN 215886600U CN 202121268021 U CN202121268021 U CN 202121268021U CN 215886600 U CN215886600 U CN 215886600U
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- 238000001556 precipitation Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 130
- 239000010802 sludge Substances 0.000 claims abstract description 91
- 238000006243 chemical reaction Methods 0.000 claims abstract description 52
- 238000004062 sedimentation Methods 0.000 claims abstract description 41
- 238000005189 flocculation Methods 0.000 claims abstract description 32
- 230000016615 flocculation Effects 0.000 claims abstract description 32
- 239000000701 coagulant Substances 0.000 claims abstract description 18
- 230000007704 transition Effects 0.000 claims abstract description 18
- 230000010354 integration Effects 0.000 claims abstract description 3
- 239000002562 thickening agent Substances 0.000 claims description 7
- 238000011010 flushing procedure Methods 0.000 claims description 4
- 238000007654 immersion Methods 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims 4
- 230000000694 effects Effects 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 230000014759 maintenance of location Effects 0.000 abstract description 3
- 239000000470 constituent Substances 0.000 abstract description 2
- 230000003311 flocculating effect Effects 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 8
- 238000010992 reflux Methods 0.000 description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 230000001112 coagulating effect Effects 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000013049 sediment Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003851 biochemical process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
High-efficient precipitation equipment of integration includes: the utility model is characterized in that the box body is internally provided with a reaction zone, a transition zone, a water inlet steady flow zone, a precipitation zone and a water outlet steady flow zone, and the utility model has the following advantages: the reaction, flocculation and precipitation are integrated in a set of equipment, sludge flows back to the reaction zone to form a high-concentration mixed flocculating constituent, the flocculation effect is greatly improved with the help of a coagulant aid, and the retention time of source water in the reaction flocculation zone is reduced, so that the occupied area is reduced; the side flow inverted V-shaped inclined plate sedimentation process is adopted in the sedimentation zone, so that the surface load of the sedimentation zone is greatly improved and is several times of that of a conventional inclined tube sedimentation tank, the sedimentation effect is improved, and the occupied area of the sedimentation zone is reduced; the lower part of the settling zone is designed according to a concentration tank, so that the sludge concentration effect is greatly improved, the solid content is more than several times of that of a conventional settling tank, secondary concentration is not required, and sludge dewatering can be directly carried out.
Description
Technical Field
The utility model relates to the technical field of rural sewage treatment equipment, in particular to integrated efficient precipitation equipment.
Background
At present, most rural sewage adopts integrated sewage treatment equipment, the process mainly comprises a biochemical process and a secondary sedimentation tank, the discharge indexes of total phosphorus and suspended matters SS in effluent hardly reach the first-class A discharge standard, and the main process for removing the total phosphorus and the suspended matters is coagulating sedimentation, while the conventional coagulating sedimentation equipment has the following defects.
The occupied area is large, so that the investment cost of equipment is high; the coagulation sedimentation effect is poor, so that the total phosphorus and suspension of the effluent do not reach the standard; the moisture content of the discharged sludge is high, so that the subsequent sludge dehydration difficulty is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems that the occupied area is large, so that the investment cost of equipment is high; the coagulation sedimentation effect is poor, so that the total phosphorus and suspension of the effluent do not reach the standard; the sludge discharge water content is high, so that the subsequent sludge dewatering difficulty is high, and the integrated efficient sedimentation equipment is provided, so that the occupied area of the equipment is reduced, and the cost is reduced; the coagulating sedimentation effect is improved; the water content of the discharged mud is reduced.
The technical scheme adopted by the utility model for solving the technical problem is as follows: high-efficient precipitation equipment of integration, it includes: a box body, wherein a reaction zone, a transition zone, a water inlet steady flow zone, a sedimentation zone and a water outlet steady flow zone are arranged in the box body, a flocculation reaction cylinder is vertically arranged in the reaction area, a water inlet pipe is arranged on one side of the box body, one end of the water inlet pipe penetrates through the side wall of the box body and extends into the flocculation reaction cylinder, the other end of the water inlet pipe is provided with a water immersion valve, the top of the side wall of the water inlet pipe is provided with a coagulant adding pipe, a lifting stirrer is arranged in the flocculation reaction cylinder, the top of the lifting stirrer penetrates through the side wall of the top of the tank body and is fixedly connected with the top of the tank body, a coagulant aid adding ring is arranged below the lifting stirrer in the flocculation reaction cylinder, a transition area is arranged beside the reaction area, one end of the transition area, which is far away from the reaction area, is provided with a water inlet stable area, one end of the water inlet stable area, which is far away from the transition area, is provided with a precipitation area, and one end of the precipitation area, which is far away from the water inlet stable area, is provided with a water outlet stable area.
As a preferred technical scheme of the utility model, the bottom of the reaction area is positioned right below the flocculation reaction cylinder, the accumulated mud water flushing prevention pipe is arranged between the transition area and the water inlet steady flow area, the water outlet overflow weir is arranged between the water inlet steady flow area and the sedimentation area, and the water inlet distributing wall is positioned in the water inlet steady flow area.
According to a preferable technical scheme of the utility model, an inverted V-shaped inclined plate is arranged in the sedimentation region, a water outlet distribution wall is arranged between the sedimentation region and the water outlet steady flow region, the water outlet distribution wall is positioned in the water outlet steady flow region, one end of the water outlet steady flow region, which is far away from the water outlet distribution wall, is provided with a water outlet overflow weir, one end of the water outlet overflow weir, which is far away from the water outlet steady flow region, is provided with a water outlet pipe, and one end of the water outlet pipe, which is far away from the water outlet overflow weir, is provided with a water outlet valve.
As a preferred technical scheme of the utility model, a grid sludge thickener is vertically arranged in the settling zone, the top of the grid sludge thickener penetrates through the top of the tank body and is fixedly connected with the top of the tank body, a sludge return pipe is arranged at the bottom of the settling zone, one end of the sludge return pipe is communicated with the bottom of the settling zone, the other end of the sludge return pipe penetrates through the side wall of the water inlet pipe and is communicated with the water inlet pipe, a sludge return pump is arranged on the sludge return pipe, a sludge return water inlet valve is arranged at one end, close to the settling zone, of the sludge return pump, a sludge return water outlet valve is arranged at one end, close to the water inlet pipe, of the sludge return pipe, a sludge discharge pipe is arranged at the bottom of the settling zone and is communicated with the bottom of the settling zone, and a sludge discharge pump is arranged on the sludge discharge pipe, and a sludge discharge water inlet valve is arranged at one end of the sludge discharge pipe, which is close to the settling zone, of the sludge discharge pump, and a sludge discharge water outlet valve is arranged at one end of the sludge discharge pipe, which is far away from the settling zone, of the sludge discharge pump.
The utility model has the following advantages: the reaction, flocculation and precipitation are integrated in a set of equipment, sludge flows back to the reaction zone to form a high-concentration mixed flocculating constituent, the flocculation effect is greatly improved with the help of a coagulant aid, and the retention time of source water in the reaction flocculation zone is reduced, so that the occupied area is reduced; the side flow inverted V-shaped inclined plate sedimentation process is adopted in the sedimentation zone, so that the surface load of the sedimentation zone is greatly improved and is several times of that of a conventional inclined tube sedimentation tank, the sedimentation effect is improved, and the occupied area of the sedimentation zone is reduced; the lower part of the settling zone is designed according to a concentration tank, so that the sludge concentration effect is greatly improved, the solid content is more than several times of that of a conventional settling tank, secondary concentration is not required, and sludge dewatering can be directly carried out.
Drawings
FIG. 1 is a schematic sectional plan view of a preferred embodiment of the present invention;
FIG. 2 is a front sectional view of a preferred embodiment of the present invention;
FIG. 3 is a sectional view of the inside of the settling zone in accordance with a preferred embodiment of the present invention.
Description of reference numerals: 1. a box body; 2. a reaction zone; 3. a transition zone; 4. a water inlet steady flow area; 5. a settling zone; 6. a water outlet steady flow area; 7. a water inlet pipe; 8. a coagulant adding pipe; 9. a flocculation reaction cylinder; 10. adding a coagulant aid into a ring; 11. lifting the stirrer; 12. the accumulated mud water is prevented from washing the pipe; 13. an overflow weir; 14. water inflow and distribution tracery wall; 15. a sludge return pipe; 16. a sludge reflux pump; 17. an inverted V-shaped sloping plate; 18. a sludge discharge pipe; 19. water is discharged and distributed to the tracery wall; 20. An effluent overflow weir; 21. a water outlet pipe; 22. a grid sludge thickener; 23. a sludge discharge pump.
Detailed Description
The technical scheme of the utility model is clearly and completely described in the following with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model will be further explained with reference to the drawings.
Referring to fig. 1-3, the integrated high efficiency precipitation apparatus of the present invention comprises: the device comprises a box body 1, wherein a reaction zone 2, a transition zone 3, a water inlet stable flow zone 4, a precipitation zone 5 and a water outlet stable flow zone 6 are arranged in the box body 1.
Example I, as shown in FIGS. 1-3
Specifically, a flocculation reaction cylinder 9 is vertically arranged in the reaction zone 2, a water inlet pipe 7 is arranged on one side of the box body 1, one end of the water inlet pipe 7 penetrates through the side wall of the box body 1 and extends into the flocculation reaction cylinder 9, a water immersion valve is arranged at the other end of the water inlet pipe 7, a coagulant adding pipe 8 is arranged at the top of the side wall of the water inlet pipe 7, a lifting stirrer 11 is arranged in the flocculation reaction cylinder 9, the top of the lifting stirrer 11 penetrates through the side wall of the top of the box body 1 and is fixedly connected with the top of the box body 1, a coagulant aid adding ring 10 is arranged below the lifting stirrer 11 in the flocculation reaction cylinder 9, a transition zone 3 is arranged beside the reaction zone 2, a water inlet stable zone 4 is arranged at one end of the transition zone 3, a water inlet stable zone 4 is arranged at one end of the water inlet stable zone 4, a settling zone 5 is arranged at one end of the settling zone 5, which is far away from the water inlet stable zone 4, the water inlet valve is opened before source water enters the equipment, and coagulant is added into the water inlet pipe 7 through the coagulant adding pipe 8, synchronously starting a sludge reflux pump 16, pumping the reflux sludge in the settling zone 5 into a water inlet pipe 7, feeding source water, coagulant and reflux sludge into a flocculation reaction cylinder 9 in the reaction zone 2 through the water inlet pipe 7, starting to feed coagulant aid into a coagulant aid feeding ring 10 at the bottom of the flocculation reaction cylinder 9, starting to lift, stir and mix the source water, coagulant, reflux sludge, coagulant aid and reflux mixed liquid entering the flocculation reaction cylinder 9 after a lifting stirrer 11 is started, completing flocculation reaction, enabling the mixed liquid after completing the flocculation reaction to overflow from the top of the flocculation reaction cylinder 9 and flow downwards along the outer wall of the cylinder, enabling part of the mixed liquid to enter a transition zone 3 along the water flow direction after the mixed liquid reaches the bottom of the reaction zone 2, enabling the rest of the mixed liquid to flow back into the flocculation reaction cylinder 9 under the lifting action of the lifting stirrer 11, and greatly improving the coagulation effect with the help of the coagulant aid, the retention time of source water in a reaction flocculation area is reduced; the bottom of the reaction area 2 is positioned under the flocculation reaction cylinder 9, a sludge water-accumulation-preventing flushing pipe 12 is arranged, a water overflow weir 13 is arranged between the transition area 3 and the water inlet stable area 4, a water inlet water distribution tracery wall 14 is arranged between the water inlet stable area 4 and the sedimentation area 5, the water inlet water distribution tracery wall 14 is positioned in the water inlet stable area 4, and in order to prevent sludge accumulation at the bottom of the reaction area 2, the sludge water-accumulation-preventing flushing pipe 12 needs to be opened at regular time to flush the bottom of the reaction area 2; an inverted V-shaped inclined plate 17 is arranged in the sedimentation zone 5, an outlet water distribution tracery wall 19 is arranged between the sedimentation zone 5 and the outlet water stable zone 6, the outlet water distribution tracery wall 19 is positioned in the outlet water stable zone 6, one end of the outlet water stable zone 6, which is far away from the outlet water distribution tracery wall 19, is provided with an outlet water overflow weir 20, one end of the outlet water overflow weir 20, which is far away from the outlet water stable zone 6, is provided with an outlet water pipe 21, one end of the outlet water pipe 21, which is far away from the outlet water overflow weir 20, is provided with an outlet water valve, after entering the transition zone 3, the mixed liquid which completes the flocculation reaction enters the inlet water stable zone 4 through the outlet water overflow weir 13, then the mixed liquid uniformly enters the sedimentation zone 5 through the inlet water distribution tracery wall 14 in the inlet water stable zone 4, after entering the sedimentation zone 5, the inverted V-shaped inclined plate 17, the mixed liquid is subjected to mud-water separation in the inverted V-shaped inclined plate 17, the clear water enters the outlet water stable zone 6 through the outlet water distribution tracery wall 19, and then enters the outlet water overflow weir 20, the water outlet valve is opened to discharge clear water, and a lateral flow inverted V-shaped inclined plate 17 sedimentation process is adopted, so that the surface load of the sedimentation zone 5 is greatly increased, the sedimentation effect is improved by more than several times compared with that of a conventional inclined tube sedimentation tank.
Example two, as shown in FIGS. 2 and 3
Specifically, a grid sludge thickener 22 is vertically arranged in the settling zone 5, the top of the grid sludge thickener 22 penetrates through the top of the tank 1 and is fixedly connected with the top of the tank 1, a sludge return pipe 15 is arranged at the bottom of the settling zone 5, one end of the sludge return pipe 15 is communicated with the bottom of the settling zone 5, the other end of the sludge return pipe 15 penetrates through the side wall of the water inlet pipe 7 and is communicated with the water inlet pipe 7, a sludge return pump 16 is arranged on the sludge return pipe 15, a sludge return water inlet valve is arranged at one end, close to the settling zone 5, of the sludge return pipe 16 on the sludge return pipe 15, a sludge return water outlet valve is arranged at one end, close to the water inlet pipe 7, of the sludge return pump 16 on the sludge return pipe 15, a sludge discharge pipe 18 is arranged at the bottom of the settling zone 5, one end of the sludge discharge pipe 18 is communicated with the bottom of the settling zone 5, a sludge discharge pump 23 is arranged on the sludge discharge pipe 18, and a sludge discharge valve is arranged at one end, close to the settling zone 5, on the sludge discharge pump 23, the one end that is located mud discharge pump 23 on the mud discharge pipe 18 and keeps away from the settling zone 5 is equipped with the mud and discharges the outlet valve, the mud sediment that falls on the type of falling V swash plate 17 descends downwards in settling zone 5 bottom, open grid sludge thickening machine 22 simultaneously, the mud of sediment is under grid sludge thickening machine 22's slow stirring, high-efficient concentration, the mud part after the concentration is beaten back to inlet tube 7 through mud backwash pump 16, surplus mud is arranged to the sludge impoundment through mud discharge pump 23 regularly, through the design of settling zone 5 lower parts, the concentrated effect of big high mud, need not carry out the secondary concentration, can directly carry out sludge dewatering.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Other parts of the utility model not described in detail are prior art and are not described in detail herein.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (4)
1. High-efficient precipitation equipment of integration, its characterized in that includes: the improved flocculation reaction tank comprises a tank body (1), wherein a reaction zone (2), a transition zone (3), a water inlet steady flow zone (4), a settling zone (5) and a water outlet steady flow zone (6) are arranged in the tank body (1), a flocculation reaction cylinder (9) is vertically arranged in the reaction zone (2), a water inlet pipe (7) is arranged on one side of the tank body (1), one end of the water inlet pipe (7) penetrates through the side wall of the tank body (1) and extends into the flocculation reaction cylinder (9), a water immersion valve is arranged at the other end of the water inlet pipe (7), a coagulant adding pipe (8) is arranged at the top of the side wall of the water inlet pipe (7), a lifting stirrer (11) is arranged in the flocculation reaction cylinder (9), the top of the lifting stirrer (11) penetrates through the side wall of the top of the tank body (1) and is fixedly connected with the top of the tank body (1), a coagulant aid adding ring (10) is arranged below the lifting stirrer (11) in the flocculation reaction cylinder (9), the other transition district (3) that is equipped with of reaction zone (2), reaction zone (2) one end is kept away from in transition district (3) is equipped with into water steady flow district (4), it is equipped with sedimentation zone (5) to keep away from transition district (3) one end in into water steady flow district (4), sedimentation zone (5) keep away from into water steady flow district (4) one end and are equipped with out water steady flow district (6).
2. The integrated high-efficiency sedimentation equipment as claimed in claim 1, wherein the bottom of the reaction zone (2) is located under the flocculation reaction cylinder (9) and is provided with a sludge water-proof flushing pipe (12), an overflow weir (13) is arranged between the transition zone (3) and the water inlet stable flow zone (4), a water inlet distributing wall (14) is arranged between the water inlet stable flow zone (4) and the sedimentation zone (5), and the water inlet distributing wall (14) is located in the water inlet stable flow zone (4).
3. The integrated high-efficiency precipitation equipment as claimed in claim 1, wherein an inverted V-shaped inclined plate (17) is arranged in the precipitation zone (5), an effluent distributing wall (19) is arranged between the precipitation zone (5) and the effluent stabilizing zone (6), the effluent distributing wall (19) is located in the effluent stabilizing zone (6), an effluent overflow weir (20) is arranged at one end of the effluent stabilizing zone (6) far away from the effluent distributing wall (19), an outlet pipe (21) is arranged at one end of the effluent overflow weir (20) far away from the effluent stabilizing zone (6), and an outlet valve is arranged at one end of the outlet pipe (21) far away from the effluent overflow weir (20).
4. The integrated efficient sedimentation equipment as claimed in claim 1, wherein a grid sludge thickener (22) is vertically arranged in the sedimentation zone (5), the top of the grid sludge thickener (22) passes through the top of the tank body (1) and is fixedly connected with the top of the tank body (1), a sludge return pipe (15) is arranged at the bottom of the sedimentation zone (5), one end of the sludge return pipe (15) is communicated with the bottom of the sedimentation zone (5), the other end of the sludge return pipe (15) passes through the side wall of the water inlet pipe (7) and is communicated with the water inlet pipe (7), a sludge return pump (16) is arranged on the sludge return pipe (15), a sludge return water inlet valve is arranged at one end of the sludge return pump (16) close to the sedimentation zone (5) on the sludge return pipe (15), and a sludge return water outlet valve is arranged at one end of the sludge return pump (16) close to the water inlet pipe (7) on the sludge return pipe (15), the sludge treatment device is characterized in that a sludge discharge pipe (18) is arranged at the bottom of the settling zone (5) and beside the sludge return pipe (15), one end of the sludge discharge pipe (18) is communicated with the bottom of the settling zone (5), a sludge discharge pump (23) is arranged on the sludge discharge pipe (18), a sludge discharge water inlet valve is arranged at one end, close to the settling zone (5), of the sludge discharge pump (23) on the sludge discharge pipe (18), and a sludge discharge water outlet valve is arranged at one end, far away from the settling zone (5), of the sludge discharge pump (23) on the sludge discharge pipe (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121268021.3U CN215886600U (en) | 2021-06-07 | 2021-06-07 | Integrated efficient precipitation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121268021.3U CN215886600U (en) | 2021-06-07 | 2021-06-07 | Integrated efficient precipitation equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215886600U true CN215886600U (en) | 2022-02-22 |
Family
ID=80500355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121268021.3U Active CN215886600U (en) | 2021-06-07 | 2021-06-07 | Integrated efficient precipitation equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215886600U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114768315A (en) * | 2022-04-25 | 2022-07-22 | 重庆水务集团股份有限公司 | Prevent sedimentation tank of flocculation deposit |
-
2021
- 2021-06-07 CN CN202121268021.3U patent/CN215886600U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114768315A (en) * | 2022-04-25 | 2022-07-22 | 重庆水务集团股份有限公司 | Prevent sedimentation tank of flocculation deposit |
| CN114768315B (en) * | 2022-04-25 | 2023-09-05 | 重庆水务集团股份有限公司 | Sedimentation tank for preventing flocculation deposition |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
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Denomination of utility model: Integrated and efficient sedimentation equipment Granted publication date: 20220222 Pledgee: Industrial Bank Co.,Ltd. Shanghai Hongkou sub branch Pledgor: Shanghai wanlang Water Technology Group Co.,Ltd. Registration number: Y2024310000226 |