CN114436441A - Wastewater treatment system for tap water plant - Google Patents
Wastewater treatment system for tap water plant Download PDFInfo
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- CN114436441A CN114436441A CN202210073596.2A CN202210073596A CN114436441A CN 114436441 A CN114436441 A CN 114436441A CN 202210073596 A CN202210073596 A CN 202210073596A CN 114436441 A CN114436441 A CN 114436441A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/26—Reducing the size of particles, liquid droplets or bubbles, e.g. by crushing, grinding, spraying, creation of microbubbles or nanobubbles
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a wastewater treatment system for a tap water plant, which comprises a primary filter box, wherein one side of the primary filter box is communicated with two water inlet pipes, the bottom of the primary filter box is communicated with a water pumping pipe, one end of the water pumping pipe is communicated with a first water pump, the output end of the first water pump is communicated with a first water delivery pipe, one end of the first water delivery pipe is communicated with a fine filter box, the top of the fine filter box is communicated with a second water delivery pipe, one end of the second water delivery pipe is communicated with a disinfection box, the bottom of the disinfection box is communicated with a third water delivery pipe, one end of the third water delivery pipe is communicated with a second water pump, the output end of the second water pump is communicated with a water return pipe, one end of the water return pipe is communicated with the primary filter box, two sides of the top of the primary filter box are movably connected with sealing doors, and the sealing doors are communicated with the interior of the primary filter box. This kind of effluent disposal system is used in water works, the staff of being convenient for clears up the solid-state debris on the screen cloth, avoids blockking up the mesh of screen cloth, and can avoid the pipeline to block up, has reduced the cost of pipeline maintenance.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to a wastewater treatment system for a tap water plant.
Background
The tap water is water which is produced by a tap water treatment plant after purification and disinfection and meets the corresponding standard and is used for living and production of people, the domestic water mainly draws rivers, lakes, underground water and surface water through a water taking pump station of the water plant, and is finally conveyed to each user through the water distribution pump station after the treatment of technological processes such as precipitation, disinfection, filtration and the like, and the tap water plant can generate a certain amount of wastewater in the water taking and supplying processes.
At present, current effluent disposal system exists following not enough, firstly effluent disposal system is when carrying out solid-liquid separation, and solid-state debris can block up the screen cloth, and the staff's of not being convenient for clearance, secondly after the solid-liquid separation, still have more particulate matter entering pipeline in the sewage, can cause the pipe blockage, can improve the maintenance cost of pipeline, and thirdly, the fixed mode of filter is comparatively loaded down with trivial details, and the staff of not being convenient for assembles, therefore we make the improvement to this, provide a waste water treatment system for water works.
Disclosure of Invention
In order to solve the technical problems, the invention provides the following technical scheme:
the invention relates to a wastewater treatment system for a tap water plant, which comprises a primary filter tank, wherein one side of the primary filter tank is communicated with two water inlet pipes, the bottom of the primary filter tank is communicated with a water pumping pipe, one end of the water pumping pipe is communicated with a first water pump, the output end of the first water pump is communicated with a first water delivery pipe, one end of the first water delivery pipe is communicated with a fine filter tank, the top of the fine filter tank is communicated with a second water delivery pipe, one end of the second water delivery pipe is communicated with a disinfection tank, the bottom of the disinfection tank is communicated with a third water delivery pipe, one end of the third water delivery pipe is communicated with a second water pump, the output end of the second water pump is communicated with a water return pipe, and one end of the water return pipe is communicated with the primary filter tank.
According to a preferable technical scheme of the invention, two sides of the top of the primary filter box are movably connected with sealing doors, the sealing doors are communicated with the interior of the primary filter box, and the outer side of one end, close to the primary filter box, of the water pumping pipe is communicated with a first electromagnetic valve.
As a preferred technical scheme of the invention, an installation frame is fixedly connected to the inner wall of the primary filter box, a through groove is formed in the surface of the installation frame, two clamping grooves which are oppositely arranged are formed in the inner wall of the through groove, a screen is arranged inside the through groove, clamping plates are fixedly connected to two ends of the screen and clamped inside the clamping grooves, a plurality of positioning holes are formed in the surface of the clamping plates, a plurality of positioning pins are fixedly connected to the top of the installation frame, one ends of the positioning pins are fixedly connected inside the positioning holes, and the number of the positioning pins is the same as the number of the positioning holes.
According to a preferable technical scheme of the invention, one end of the water pumping pipe is communicated with a crushing barrel, a cross fixing frame is fixedly connected inside one end of the crushing barrel, a servo motor is fixedly connected to one side of the cross fixing frame, the output end of the servo motor is fixedly connected with a rotating roller, a plurality of groups of crushing blades are fixedly connected to the outer side of the rotating roller, and a filtering membrane is fixedly connected to the inner wall of one end, close to the water pumping pipe, of the crushing barrel.
As a preferred technical scheme of the invention, a liquid medicine barrel is arranged at the top of the sterilizing box, a liquid medicine pipe is communicated with the bottom of the liquid medicine barrel, one end of the liquid medicine pipe is communicated with the sterilizing box, a second electromagnetic valve is communicated with the outer side of the liquid medicine pipe, a partition plate is fixedly connected inside the sterilizing box, a water quality detector is arranged on one side of the partition plate, a water outlet pipe is communicated with the bottom of the water quality detector, and one end of a third water delivery pipe is communicated with the water outlet pipe.
As a preferred technical scheme of the present invention, an outer side of one end of the third water pipe close to the water outlet pipe is communicated with a third electromagnetic valve, and an outer side of the bottom of the water outlet pipe is communicated with a fourth electromagnetic valve.
As a preferred technical scheme, a zeolite filter plate, a quartz sand filter plate, an activated carbon filter plate and a mineralized ball filter plate are fixedly connected to the interior of the fine filter box from bottom to top in sequence, mounting plates are fixedly connected to the outer sides of the zeolite filter plate, the quartz sand filter plate, the activated carbon filter plate and the mineralized ball filter plate, and connecting plates are fixedly connected to two sides of each mounting plate.
According to a preferable technical scheme of the invention, two sides of the mounting plate are fixedly connected with fixing plates, the bottom surfaces of the fixing plates are attached to the top surfaces of the connecting plates, one opposite side of the two connecting plates is provided with a groove, the fixing plates are fixedly connected inside the groove, and the outer walls of the fixing plates are attached to the inner walls of the groove.
As a preferred technical scheme of the invention, the tops of the two connecting plates are fixedly connected with fixing blocks, the inner parts of the fixing blocks are fixedly connected with return springs, and the top of one end of each fixing block is fixedly connected with a fastening piece.
As a preferable technical scheme of the invention, two sides of the top of the mounting plate are fixedly connected with the support plate, one side of the top of the support plate is fixedly connected with the inserted bar, one end of the inserted bar is provided with a hole, and the fastener is fixedly connected inside the hole.
The invention has the beneficial effects that:
the utility model provides a, this kind of waste water treatment system is used in water works, the sealing door is opened to the staff's accessible, then extracts the locating pin from the locating hole to make the cardboard break away from the draw-in groove, can make the screen cloth carry out quick assembly disassembly, the staff of being convenient for clears up the solid-state debris on the screen cloth, avoids blockking up the mesh of screen cloth.
Two, this kind of effluent disposal system is used in water works starts first water pump earlier, makes it draw water from primary filter tank through the drinking-water pipe, and sewage can get into crushing section of thick bamboo, then starts servo motor, makes it drive the live-rollers and rotates, and then makes crushing blade smash great granule in to sewage, and then sewage can be through filtration membrane, and filtration membrane can prevent that granule debris from getting into the pipeline, avoids the pipe blockage, has reduced the cost of pipeline maintenance.
Thirdly, this kind of effluent disposal system is used in water works, cooperation through fixed plate and recess can make the mounting panel fix between the connecting plate, and then the one end of inserted bar can extrude reset spring, the inside of fixed block is gone into to the card, and then the hole can be with the fastener parallel and level, then press down the fastener and can fix the mounting panel, and then make zeolite filter plate, quartz sand filter plate, activated carbon filter plate and mineralize mineralization ball filter plate can fix the inside at smart filter box, it is comparatively convenient to install, time saving and labor saving, can satisfy people's demand.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a block diagram of a wastewater treatment system for a water works according to the present invention;
FIG. 2 is a structural view of an installation frame of a wastewater treatment system for a water works according to the present invention;
FIG. 3 is a structural view of a pulverizing cylinder of a wastewater treatment system for a water works according to the present invention;
FIG. 4 is a structural view of a fine filtering tank of a wastewater treatment system for a water works according to the present invention;
FIG. 5 is an enlarged view of the wastewater treatment system for a water works according to the present invention at the A position;
FIG. 6 is a structural view of a sterilizing chamber of a wastewater treatment system for a water works according to the present invention.
In the figure: 1. a primary filter tank; 2. a sealing door; 3. a water inlet pipe; 4. a water pumping pipe; 5. a first solenoid valve; 6. a first water pump; 7. a first water delivery pipe; 8. a fine filter box; 9. a second water delivery pipe; 10. a sterilizing box; 11. a third water delivery pipe; 12. a second water pump; 13. a water return pipe; 14. installing a frame; 15. a through groove; 16. a card slot; 17. screening a screen; 18. clamping a plate; 19. positioning holes; 20. positioning pins; 21. a milling drum; 22. a cross-shaped fixing frame; 23. a servo motor; 24. a rotating roller; 25. crushing the leaves; 26. a filtration membrane; 27. a connecting plate; 28. mounting a plate; 29. a mineralized ball filter plate; 30. a fixing plate; 31. a fixed block; 32. a return spring; 33. a fastener; 34. a support plate; 35. inserting a rod; 36. a liquid medicine barrel; 37. a liquid medicine tube; 38. a second solenoid valve; 39. a partition plate; 40. a water quality detector; 41. a water outlet pipe; 42. a third electromagnetic valve; 43. and a fourth solenoid valve.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example (b): as shown in fig. 1 and 2, the wastewater treatment system for the tap water plant comprises a primary filter tank 1, and is characterized in that one side of the primary filter tank 1 is communicated with two water inlet pipes 3, the bottom of the primary filter tank 1 is communicated with a water pumping pipe 4, one end of the water pumping pipe 4 is communicated with a first water pump 6, the output end of the first water pump 6 is communicated with a first water pipe 7, one end of the first water pipe 7 is communicated with a fine filter tank 8, the top of the fine filter tank 8 is communicated with a second water pipe 9, one end of the second water pipe 9 is communicated with a disinfection tank 10, the bottom of the disinfection tank 10 is communicated with a third water pipe 11, one end of the third water pipe 11 is communicated with a second water pump 12, the output end of the second water pump 12 is communicated with a water return pipe 13, and one end of the water return pipe 13 is communicated with the primary filter tank 1.
The top both sides swing joint of elementary rose box 1 has sealing door 2, and sealing door 2 intercommunication elementary rose box 1's inside, and the outside intercommunication that drinking-water pipe 4 is close to the one end of elementary rose box 1 has first solenoid valve 5.
Fixed connection installing frame 14 on the inner wall of elementary rose box 1, logical groove 15 has been seted up on the surface of installing frame 14, the draw-in groove 16 of two relative settings has been seted up on the inner wall that leads to groove 15, the inside that leads to groove 15 is provided with screen cloth 17, screen cloth 17's both ends fixedly connected with cardboard 18, cardboard 18 joint is in the inside of draw-in groove 16, a plurality of locating holes 19 have been seted up on the surface of cardboard 18, a plurality of locating pins 20 of top fixedly connected with of installing frame 14, the one end fixed connection of locating pin 20 is in the inside of locating hole 19, the quantity of locating pin 20 is the same with the quantity of locating hole 19, go into draw-in groove 16 with cardboard 18 card, align locating hole 19 and locating pin 20 again, make the one end of locating pin 20 insert in locating hole 19, can carry out quick assembly disassembly to screen cloth 17, the staff of being convenient for clears up screen cloth 17, avoid screen cloth 17's mesh jam.
As shown in fig. 3, in the wastewater treatment system for the tap water plant of the present invention, one end of a water pumping pipe 4 is communicated with a crushing cylinder 21, a cross-shaped fixing frame 22 is fixedly connected inside one end of the crushing cylinder 21, a servo motor 23 is fixedly connected to one side of the cross-shaped fixing frame 22, an output end of the servo motor 23 is fixedly connected with a rotating roller 24, a plurality of groups of crushing blades 25 are fixedly connected to an outer side of the rotating roller 24, a filtering membrane 26 is fixedly connected to an inner wall of one end of the crushing cylinder 21 close to the water pumping pipe 4, and the servo motor 23 is started to drive the rotating roller 24 to rotate, such that the crushing blades 25 crush larger particles in the sewage, and the pipeline is not blocked.
As shown in fig. 4 and 5, in the wastewater treatment system for the tap water plant of the present invention, a zeolite filter plate, a quartz sand filter plate, an activated carbon filter plate and a mineralized ball filter plate 29 are fixedly connected to the inside of the fine filter tank 8 from bottom to top in sequence, the outer sides of the zeolite filter plate, the quartz sand filter plate, the activated carbon filter plate and the mineralized ball filter plate 29 are all fixedly connected with a mounting plate 28, and both sides of the mounting plate 28 are both fixedly connected with a connecting plate 27.
The both sides fixedly connected with fixed plate 30 of mounting panel 28, the top surface of the bottom surface laminating connecting plate 27 of fixed plate 30, the recess has been seted up to two relative one sides of connecting plate 27, fixed plate 30 fixed connection is in the inside of recess, and the inner wall of the outer wall laminating recess of fixed plate 30.
The top of two connecting plates 27 is all fixedly connected with fixed block 31, and the inside fixedly connected with reset spring 32 of fixed block 31, and the top fixedly connected with fastener 33 of fixed block 31 one end.
Top both sides fixed connection backup pad 34 of mounting panel 28, top one side fixed connection inserted bar 35 of backup pad 34, the one end of inserted bar 35 is provided with the hole, fastener 33 fixed connection is in the inside in hole, place mounting panel 28 between two connecting plates 27, then in the recess is gone into to the card of fixed plate 30, and make the outer wall laminating of mounting panel 28 both sides connecting plate 27's outer wall, make the diapire laminating essence filter box 8's of mounting panel 28 inner bottom wall, and then the inside of fixed block 31 is gone into to the one end card of inserted bar 35, and can make hole and fastener 33 parallel and level, then insert the inside in hole with fastener 33, can fix mounting panel 28.
As shown in fig. 6, in the wastewater treatment system for the water works according to the present invention, a chemical liquid barrel 36 is disposed at the top of a disinfection box 10, a chemical liquid pipe 37 is connected to the bottom of the chemical liquid barrel 36, one end of the chemical liquid pipe 37 is connected to the disinfection box 10, a second electromagnetic valve 38 is connected to the outer side of the chemical liquid pipe 37, a partition plate 39 is fixedly connected to the inside of the disinfection box 10, a water quality detector 40 is disposed at one side of the partition plate 39, a water outlet pipe 41 is connected to the bottom of the water quality detector 40, one end of a third water pipe 11 is connected to the water outlet pipe 41, and a disinfectant can be quantitatively added into the disinfection box 10 from the chemical liquid barrel 36 by the disposed second electromagnetic valve 38.
The outside intercommunication that third raceway 11 is close to the one end of outlet pipe 41 has third solenoid valve 42, and the outside intercommunication of outlet pipe 41 bottom has fourth solenoid valve 43, detects when quality of water does not reach standard when water quality detector 40, can close fourth solenoid valve 43, opens third solenoid valve 42, makes in water gets into elementary rose box 1 through wet return 13, handles once more, if quality of water is up to standard, then can open fourth solenoid valve 43, closes third solenoid valve 42.
Finally, it should be noted that: in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; 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 according to specific situations by those of ordinary skill in the art.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The wastewater treatment system for the tap water plant comprises a primary filter tank (1) and is characterized in that one side of the primary filter tank (1) is communicated with two water inlet pipes (3), the bottom of the primary filter tank (1) is communicated with a water pumping pipe (4), one end of the water pumping pipe (4) is communicated with a first water pump (6), the output end of the first water pump (6) is communicated with a first water conveying pipe (7), one end of the first water conveying pipe (7) is communicated with a fine filtering box (8), the top of the fine filtering box (8) is communicated with a second water conveying pipe (9), one end of the second water conveying pipe (9) is communicated with a disinfection box (10), the bottom of the disinfection box (10) is communicated with a third water conveying pipe (11), one end of the third water conveying pipe (11) is communicated with a second water pump (12), the output end of the second water pump (12) is communicated with a water return pipe (13), one end of the water return pipe (13) is communicated with the primary filter tank (1).
2. The wastewater treatment system for the tap water plant according to claim 1, wherein sealing doors (2) are movably connected to two sides of the top of the primary filter tank (1), the sealing doors (2) are communicated with the inside of the primary filter tank (1), and a first electromagnetic valve (5) is communicated with the outer side of one end, close to the primary filter tank (1), of the water pumping pipe (4).
3. The wastewater treatment system for a tap water plant according to claim 1, the inner wall of the primary filter box (1) is fixedly connected with a mounting frame (14), the surface of the mounting frame (14) is provided with a through groove (15), two clamping grooves (16) which are oppositely arranged are arranged on the inner wall of the through groove (15), a screen (17) is arranged in the through groove (15), two ends of the screen (17) are fixedly connected with clamping plates (18), the clamping plate (18) is clamped inside the clamping groove (16), a plurality of positioning holes (19) are formed in the surface of the clamping plate (18), the top of the mounting frame (14) is fixedly connected with a plurality of positioning pins (20), one end of the positioning pin (20) is fixedly connected inside the positioning hole (19), the number of the positioning pins (20) is the same as that of the positioning holes (19).
4. The wastewater treatment system for the tap water plant according to claim 1, wherein one end of the water pumping pipe (4) is communicated with a crushing barrel (21), a cross fixing frame (22) is fixedly connected to the inside of one end of the crushing barrel (21), a servo motor (23) is fixedly connected to one side of the cross fixing frame (22), a rotating roller (24) is fixedly connected to the output end of the servo motor (23), a plurality of groups of crushing blades (25) are fixedly connected to the outer side of the rotating roller (24), and a filtering membrane (26) is fixedly connected to the inner wall of one end, close to the water pumping pipe (4), of the crushing barrel (21).
5. The wastewater treatment system for the tap water plant according to claim 1, wherein a liquid medicine barrel (36) is arranged at the top of the disinfection tank (10), a liquid medicine pipe (37) is communicated with the bottom of the liquid medicine barrel (36), one end of the liquid medicine pipe (37) is communicated with the disinfection tank (10), a second electromagnetic valve (38) is communicated with the outer side of the liquid medicine pipe (37), a partition plate (39) is fixedly connected with the inside of the disinfection tank (10), a water quality detector (40) is arranged on one side of the partition plate (39), a water outlet pipe (41) is communicated with the bottom of the water quality detector (40), and one end of the third water pipe (11) is communicated with the water outlet pipe (41).
6. The wastewater treatment system for the tap water plant according to claim 5, wherein the outer side of one end of the third water delivery pipe (11) close to the water outlet pipe (41) is communicated with a third electromagnetic valve (42), and the outer side of the bottom of the water outlet pipe (41) is communicated with a fourth electromagnetic valve (43).
7. The wastewater treatment system for the tap water plant according to claim 1, wherein the fine filter box (8) is fixedly connected with a zeolite filter plate, a quartz sand filter plate, an activated carbon filter plate and a mineralized ball filter plate (29) from bottom to top in sequence, the outer sides of the zeolite filter plate, the quartz sand filter plate, the activated carbon filter plate and the mineralized ball filter plate (29) are fixedly connected with a mounting plate (28), and two sides of the mounting plate (28) are fixedly connected with connecting plates (27).
8. The wastewater treatment system for the tap water plant according to claim 7, wherein fixing plates (30) are fixedly connected to two sides of the mounting plate (28), the bottom surfaces of the fixing plates (30) are attached to the top surfaces of the connecting plates (27), grooves are formed in the opposite sides of the two connecting plates (27), the fixing plates (30) are fixedly connected to the inner portions of the grooves, and the outer walls of the fixing plates (30) are attached to the inner walls of the grooves.
9. The wastewater treatment system for the tap water plant according to claim 7, wherein a fixing block (31) is fixedly connected to the top of each of the two connecting plates (27), a return spring (32) is fixedly connected to the inside of the fixing block (31), and a fastening member (33) is fixedly connected to the top of one end of the fixing block (31).
10. The wastewater treatment system for the tap water plant according to claim 9, wherein the support plate (34) is fixedly connected to two sides of the top of the mounting plate (28), the insert rod (35) is fixedly connected to one side of the top of the support plate (34), one end of the insert rod (35) is provided with a hole, and the fastener (33) is fixedly connected to the inside of the hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210073596.2A CN114436441A (en) | 2022-01-21 | 2022-01-21 | Wastewater treatment system for tap water plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210073596.2A CN114436441A (en) | 2022-01-21 | 2022-01-21 | Wastewater treatment system for tap water plant |
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| CN114436441A true CN114436441A (en) | 2022-05-06 |
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| CN202210073596.2A Pending CN114436441A (en) | 2022-01-21 | 2022-01-21 | Wastewater treatment system for tap water plant |
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| CN213680211U (en) * | 2020-08-20 | 2021-07-13 | 青岛兰海希膜工程有限公司 | Continuous wastewater treatment device |
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