CN214990436U

CN214990436U - Valveless ultrafiltration water purification system for water treatment

Info

Publication number: CN214990436U
Application number: CN202022975644.6U
Authority: CN
Inventors: 吴降麟; 包进锋; 高懿; 范磊; 李大海
Original assignee: Hangzhou Creflux Membrane Thchnology Co ltd
Current assignee: Hangzhou Creflux Membrane Thchnology Co ltd
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-12-03
Anticipated expiration: 2030-12-07

Abstract

The utility model relates to a water treatment technical field especially relates to and discloses a valveless ultrafiltration water purification system for water treatment, including water intake unit, ultrafiltration unit, still including just washing unit, siphon unit, just washing unit, siphon unit all are connected to ultrafiltration unit, through the siphon effect of siphon unit, carry out the siphon with ultrafiltration unit's dense water, just washing unit's just washing water and arrange outward. The utility model discloses a valveless ultrafiltration water purification system for water treatment possesses forward washing, can intake the membrane module and incline dense water, forward wash water, backwash water siphon evacuation, has increased the replacement efficiency of dense water, has strengthened membrane module cleaning performance, and the accumulation of reduction pollutant prolongs membrane life, and does not need extra pump, valve, and the energy saving consumes, is particularly useful for the incomplete rural area of electric power facility and network condition.

Description

Valveless ultrafiltration water purification system for water treatment

Technical Field

The utility model relates to a water treatment technical field especially relates to a valveless ultrafiltration water purification system for water treatment.

Background

According to the World Health Organization (WHO), 80% of the diseases worldwide are associated with direct drinking of unclean drinking water. Especially in remote rural areas, the problem of shortage of supporting facilities such as traffic, power consumption, networks and the like exists, so that the general remote automatic water purifying equipment is difficult to operate and maintain.

The general valveless filter adopts gravel as filtering materials, so that the problems of low filtering precision, poor quality of produced water and the like can be caused, and the water quality standard of direct drinking water can not be reached. The membrane filtration technology is widely popularized and applied in the water purification process due to stable water production and high filtration precision, but membrane components are generally matched with valves and pumps for use, so that the energy consumption is high, and the use of the membrane filtration technology is greatly limited in rural areas where electricity cannot be guaranteed.

The valveless ultrafiltration technology combining a valveless filter with an ultrafiltration membrane component is available, but the problems of poor membrane cleaning effect and short effective operation time exist in the existing technology. Patent CN 210993795 provides an ultrafiltration membrane self-cleaning device, and this device realizes the automatic backwash of device through the inside sleeve pipe of siphon, reduces the use of valve, pump, reduces the energy consumption. The patent CN 107158950A increases the treatment capacity by changing the membrane component structure, and realizes the automation of the whole process of ultrafiltration and back washing. However, at the present stage, there is no effective way to drain the water in the membrane shell, and the cleaning of the membrane filaments is stopped until the backwashing, and the forward washing process of the surface of the membrane filaments is lacked.

Therefore, it is very urgent to provide a valveless ultrafiltration apparatus which can safely, efficiently and stably operate under the condition of incomplete basic supporting facilities and has functions of forward washing and membrane module evacuation.

Disclosure of Invention

The utility model provides a to the defect that prior art exists, the valveless ultrafiltration water purification system for water treatment who possesses forward washing, can intake membrane module side dense water evacuation.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a valveless ultrafiltration water purification system for water treatment, includes into water unit, ultrafiltration unit, still includes positive washing unit, siphon unit, and positive washing unit, siphon unit all are connected to ultrafiltration unit, through the siphon effect of siphon unit, carry out the siphon with ultrafiltration unit's dense water, positive washing unit's positive washing water and arrange outward. Concentrated water and positive washing water are discharged out in a siphoning way without additional pumps and valves, the cleaning effect of the membrane component is enhanced on the basis of saving energy consumption, the running time of the membrane component is prolonged, the service life of the membrane is prolonged, and the membrane is suitable for rural areas with incomplete electric power facilities and network conditions.

Preferably, the ultrafiltration unit comprises a water inlet chamber, an ultrafiltration membrane component, a water production chamber, a water production pipe and a water production water storage tank, wherein the ultrafiltration membrane component is positioned in the water inlet chamber, the water production chamber is positioned above the water inlet chamber, two ends of the water production pipe are respectively connected with the water production chamber and the water production water storage tank, and the upper part of the water production water storage tank is provided with an overflow port;

the water inlet unit comprises a water inlet groove, a main water inlet pipe and a component water inlet pipe which are sequentially connected, the main water inlet pipe is divided into a vertical section and a horizontal section, an outlet of the water inlet groove is connected with the upper end of the vertical section of the main water inlet pipe, the upper end of the component water inlet pipe is connected with the lower end of the water inlet chamber, and the lower end of the component water inlet pipe is connected with the horizontal section of the main water inlet pipe;

the forward washing unit comprises a forward washing water storage tank, a forward washing pipe and a forward washing flow guide pipe which are sequentially connected from top to bottom, the forward washing flow guide pipe penetrates through an encapsulation disc at the top end of membrane filaments of the membrane component and is inserted into the membrane filaments of the membrane component, and the forward washing flow guide pipe and the water production chamber are independent and not communicated with each other;

the siphon unit comprises a siphon, a siphon auxiliary pipe, a water seal well and a siphon destroying pipe, the siphon comprises a siphon first vertical section, a siphon connecting section and a siphon second vertical section which are connected in sequence, the upper end of the siphon second vertical section is higher than the upper end of the siphon first vertical section, the lower end of the siphon first vertical section is connected with the horizontal section of the main water inlet pipe, the lower end of the siphon second vertical section is connected to the water seal well, the siphon auxiliary pipe is divided into a horizontal section, a vertical section and an inclined branch section, one end of the horizontal section of the siphon auxiliary pipe is connected with the vertical section of the siphon auxiliary pipe, the other end of the horizontal section of the siphon auxiliary pipe is connected with the top end of the siphon second vertical section, the first end of the inclined branch section of the siphon auxiliary pipe is connected to the middle lower part of the siphon connecting section, the second end of the inclined branch section of the siphon auxiliary pipe is connected to the vertical section, the first end of the inclined branch section of the siphon auxiliary pipe is higher than the second end of the inclined branch section of the siphon auxiliary pipe, the horizontal section and the vertical section of the siphon auxiliary pipe are connected with the vertical section, siphon destroys horizontal section one end of pipe and is connected with the vertical section top of siphon second, and siphon destroys vertical section one end of pipe and is connected to total inlet tube horizontal segment.

The structural design of the forward washing guide pipe and the forward washing water storage tank in the membrane component is matched with the siphon unit, so that water flow can carry out forward washing on membrane filaments in the siphon process. Meanwhile, the addition of the forward washing flow guide pipe enables the concentrated water at the water inlet side in the membrane to be almost completely emptied in the siphoning process, so that the replacement efficiency of the concentrated water is increased, and the accumulation of pollutants is reduced.

Preferably, the water inlet chamber, the ultrafiltration membrane component, the water production chamber, the water production pipe and the water production water storage tank of the ultrafiltration unit also form a backwashing unit, and water in the backwashing unit flows from the water production water storage tank, the water production pipe, the water production chamber, the ultrafiltration membrane component and the water inlet chamber in sequence. The backwashing water of the backwashing unit is also discharged out through the siphon unit.

Preferably, the top surface of the forward washing water storage tank is higher than the top end of the second vertical section of the siphon by 0.1-0.5 m, and the top end of the main water inlet pipe is higher than the top end of the second vertical section of the siphon by 0.1-0.5 m. The structure is helpful for avoiding overflow of the stored water in the forward washing water storage tank from the upper side when siphon occurs, so that the system can normally run. Preferably, the forward washing guide pipe is arranged at the center of the membrane component, the hollow fiber membrane filaments are surrounded and distributed by taking the forward washing guide pipe as the center, the lower end of the forward washing guide pipe is closed, the side wall of the forward washing guide pipe is provided with guide holes, a group of guide holes are formed in the same horizontal plane, the guide holes in the group are uniformly distributed on the pipe wall, the interval between the adjacent groups is gradually increased from bottom to top, and the number of the guide holes in each group is gradually reduced from bottom to top. This structure is when forward washing, and rivers come out through the water conservancy diversion hole, can sweep the membrane silk, and is good to the cleaning performance of membrane silk.

Preferably, the upper ends of the hollow fiber membrane filaments of the membrane module are fixed on the membrane filament top end packaging disc, and the lower ends are distributed free ends. The membrane yarn is beneficial to swing, effective scouring and cleaning are formed, and pollution blockage is reduced.

Preferably, the overflow port is 0.4-0.6 m higher than the top end of the membrane module. The structure is helpful for improving the backwashing pressure in the backwashing process, thereby enhancing the cleaning effect in the backwashing stage.

Preferably, the lower end of the forward washing pipe and the upper end of the water inlet pipe of the component are both provided with valves and detachable loose joints. The assembly and the connection are facilitated.

Preferably, the liquid level of the water seal well is 2.5-5.5 m below the ground, and the tail end of the second vertical section of the siphon is 0.5-1 m below the liquid level of the water seal well. The lower liquid level of the water seal well is beneficial to increasing the suction force in the siphoning process, thereby enhancing the membrane cleaning effect, shortening the emptying time and prolonging the effective water production time of the equipment. The tail end of the second vertical section is positioned below the liquid level of the water seal well so as to ensure normal occurrence of siphon.

The utility model discloses a valveless ultrafiltration water purification system for water treatment possesses forward washing, can intake the membrane module and incline dense water, forward wash water, backwash water siphon evacuation, has increased the replacement efficiency of dense water, has strengthened membrane module cleaning performance, and the accumulation of reduction pollutant prolongs membrane life, and does not need extra pump, valve, and the energy saving consumes, is particularly useful for the incomplete rural area of electric power facility and network condition.

Drawings

Fig. 1 is a schematic structural diagram of a valveless ultrafiltration water purification system for water treatment according to an embodiment of the present invention.

Fig. 2 is a schematic structural view of the siphon tube of fig. 1.

In the figure: 1. a water inlet groove; 2. a main water inlet pipe; 3. a siphon tube; 4. a component water inlet pipe; 5. a water inlet chamber; 6. an ultrafiltration membrane module; 7. a water producing chamber; 8. a water production pipe; 9. a forward washing flow guide pipe; 10. a water producing storage tank; 11. a siphon auxiliary pipe; 12. positively washing the tube; 13. washing the water storage tank; 14. water sealing the well; 15. a siphon break pipe; 16. siphoning the first vertical section; 17. siphoning the second vertical section; 18. a siphon connection section; 19. an overflow port; 20. a membrane filament top end packaging disc; 21 diversion holes.

Detailed Description

The present invention will be further described with reference to fig. 1 and 2 and the following detailed description.

A valveless ultrafiltration water purification system for water treatment is shown in figure 1, and comprises a water inlet unit and an ultrafiltration unit, and is characterized in that: the positive washing unit and the siphon unit are both connected to the ultrafiltration unit, and the concentrated water of the ultrafiltration unit and the positive washing water of the positive washing unit are siphoned and discharged outwards through the siphoning effect of the siphon unit.

Wherein: the ultrafiltration unit comprises a water inlet chamber 5, an ultrafiltration membrane component 6, a water production chamber 7, a water production pipe 8 and a water production storage tank 10, wherein the ultrafiltration membrane component 6 is positioned in the water inlet chamber 5, the upper end of a hollow fiber membrane wire of the membrane component 6 is fixed on a membrane wire top end packaging disc 20 of the ultrafiltration membrane component 6, the lower end of the hollow fiber membrane wire is a distributed free end, the water production chamber 7 is positioned above the water inlet chamber 5, two ends of the water production pipe 8 are respectively connected with the water production chamber 7 and the water production storage tank 10, the upper part of the water production storage tank 10 is provided with an overflow port 19, and the overflow port 19 is 0.5m higher than the top end of the membrane component 6; the water inlet chamber 5, the ultrafiltration membrane component 6, the water production chamber 7, the water production pipe 8 and the water production water storage tank 10 of the ultrafiltration unit also form a backwashing unit, and water of the backwashing unit flows from the water production water storage tank 10, the water production pipe 8, the water production chamber 7, the ultrafiltration membrane component 6 and the water inlet chamber 5 in sequence.

The water inlet unit comprises a water inlet groove 1, a main water inlet pipe 2 and a component water inlet pipe 4 which are sequentially connected, wherein the main water inlet pipe 2 is divided into a vertical section and a horizontal section, the outlet of the water inlet groove 1 is connected with the upper end of the vertical section of the main water inlet pipe 2, the upper end of the component water inlet pipe 4 is connected with the lower end of the water inlet chamber 5, and the lower end of the component water inlet pipe 4 is connected with the horizontal section of the main water inlet pipe 2; the upper end of the component water inlet pipe 4 is provided with a valve and a detachable loose joint (not shown in the figure), and the upper end of the component water inlet pipe 4 is detachably connected with a water inlet of the water inlet chamber 5;

the forward washing unit comprises a forward washing water storage tank 13, a forward washing pipe 12 and a forward washing guide pipe 9 which are sequentially connected from top to bottom, the forward washing guide pipe 9 penetrates through a packaging disc 20 at the top end of a membrane filament of the membrane assembly 6 and is inserted into the membrane filament of the membrane assembly 6, the forward washing guide pipe 9 is arranged at the center of the membrane assembly 6, hollow fiber membrane filaments are surrounded and distributed by taking the forward washing guide pipe 9 as the center, the lower end of the forward washing guide pipe 9 is closed, guide holes 21 are punched on the side wall, a group of holes are formed on the same horizontal plane, the guide holes 21 in the group are uniformly distributed on the pipe wall, the interval between adjacent groups is gradually increased from bottom to top, the number of the guide holes 21 in each group is gradually reduced from bottom to top, and the forward washing guide pipe 9 and the water producing chamber 7 are mutually independent and not communicated; the lower end of the forward washing pipe 12 is provided with a valve and a detachable loose joint (not shown in the figure), the lower end of the forward washing pipe 12 is detachably connected with the forward washing guide pipe 9, the forward washing water storage tank 13 is not closed, and external air can enter the forward washing water storage tank 13 along with the water level reduction of the forward washing water storage tank 13;

the siphon unit comprises a siphon pipe 3, a siphon auxiliary pipe 11, a water seal well 14 and a siphon damage pipe 15, the siphon pipe 3 comprises a siphon first vertical section 16, a siphon connecting section 18 and a siphon second vertical section 17 which are connected in sequence, the upper end of the siphon second vertical section 17 is higher than the upper end of the siphon first vertical section 16, the siphon connecting section 18 is an inclined straight pipe which connects the upper end of the siphon second vertical section 17 and the upper end of the siphon first vertical section 16, the lower end of the siphon first vertical section 16 is connected with the horizontal section of the main water inlet pipe 2, the lower end of the siphon second vertical section 17 is connected to the water seal well 14, the siphon auxiliary pipe 11 is divided into a horizontal section, a vertical section and an inclined branch section, one end of the horizontal section of the siphon auxiliary pipe 11 is connected with the vertical section of the siphon auxiliary pipe 11, the other end of the horizontal section of the siphon auxiliary pipe 11 is connected with the top end of the second vertical section 17, the first end of the inclined branch section of the siphon auxiliary pipe 11 is connected to the lower part of the siphon connecting section 18, the second end is connected to 11 vertical sections of siphon auxiliary pipe, and 11 oblique branch section first end positions of siphon auxiliary pipe are higher than 11 oblique branch section second ends of siphon auxiliary pipe, and the siphon destroys pipe 15 and includes interconnect's horizontal segment and vertical section, and the siphon destroys pipe 15 horizontal segment one end and is connected with 17 tops of the vertical section of siphon second, and the siphon destroys pipe 15 vertical section one end and is connected to total inlet tube 2 horizontal segment.

The top surface of the forward washing water storage tank 13 is higher than the top end of the second vertical section 17 of the siphon by 0.1-0.5 m, and the top end of the main water inlet pipe 2 is higher than the top end of the second vertical section 17 of the siphon by 0.1-0.5 m.

The liquid level of the water seal well 14 is 4m below the ground, and the tail end of the siphon second vertical section 17 is 0.8m below the liquid level of the water seal well 14.

Raw water passes through intake chamber 1 and gets into total inlet tube 2, fills 5 side of intaking of intake chamber under the action of gravity, siphon 3 and just wash pipe 12 to carry out high climbing in total inlet tube 2 vertical section and just wash pipe 12, along with total inlet tube 2 vertical section, siphon 3, just wash the increase of liquid level height in the pipe 12, the pressure increase in the intake chamber 5, when pressure increase reaches certain degree and satisfies the water production condition, it gets into product water aqua storage tank 10 to produce water through 6 upper portion product water pipes 8 of milipore filter subassembly, the overflow is arranged outward.

Along with the generation of membrane pollution, transmembrane pressure difference is increased, membrane filaments can maintain water production by higher pressure, so that the liquid levels in the siphon pipe 3, the main water inlet pipe 2 and the forward washing pipe 12 can slowly rise, when the liquid level reaches an inclined branch section of the siphon auxiliary pipe 11, a part of concentrated water enters a vertical section of the siphon auxiliary pipe along the inclined branch section of the siphon auxiliary pipe and then flows downwards into the drainage water seal well 14, air in the siphon pipe 3 is continuously pumped out by the siphon auxiliary pipe 11 under the action of vacuum and water flow gas clamping formed by descending water flow in the pipe, the vacuum degree in the siphon pipe 3 is gradually increased, water in the water seal well 14 is sucked to a certain height at the lower port of the second vertical section 17, when the concentrated water falls off from the top end of the siphon second vertical section 17, the vacuum degree in the pipe is sharply increased, and when the concentrated water reaches a certain degree, the falling water flow and the ascending water flow at the tail end of the second vertical section 17 are converged into one, forming continuous siphon to discharge the concentrated water in the water inlet chamber 5. At the moment, the water stored in the forward washing water storage tank 13 flows to the water inlet chamber 5 through the forward washing pipe 12 and the forward washing guide pipe 9 under the action of gravity and siphon, and the water flow sweeps the membrane filaments in the process to clean the membrane filaments. When the water level in the forward washing pipe 12 drops to the liquid level of the water production water storage tank 10, the water stored in the water production water storage tank 10 flows from the water production water storage tank 10, the water production pipe 8, the water production chamber 7, the ultrafiltration membrane component 6 and the water inlet chamber 5 in sequence under the action of gravity and siphon, membrane wires are backwashed, and the backwash water and the forward washing water are directly discharged outside through the siphon action after being mixed in the water inlet chamber 5. When the liquid level in the membrane module 6 is reduced to the lowest end of the water producing chamber 7, external air entering from the forward washing water storage tank 13 enters the water inlet chamber 5 through the forward washing pipe 12 and the forward washing flow guide pipe 9, siphon negative pressure is balanced, siphon is continued, and concentrated water in the water inlet chamber 5 is emptied. When the liquid level in the membrane module 6 drops to the lower end of the siphon break pipe 15, the external gas enters the topmost end of the siphon pipe 3 through the siphon break pipe 15, and the siphon is broken. And entering the next water production stage.

In summary, the preferred embodiments of the present invention are not intended to limit the scope of the present invention, and all equivalent changes and modifications made according to the content of the claims of the present invention should be considered as the technical scope of the present invention.

Claims

1. The utility model provides a valveless ultrafiltration water purification system for water treatment, includes into water unit, ultrafiltration unit, its characterized in that: the positive washing unit and the siphon unit are both connected to the ultrafiltration unit, and the concentrated water of the ultrafiltration unit and the positive washing water of the positive washing unit are siphoned and discharged outwards through the siphoning effect of the siphon unit.

2. The valveless ultrafiltration water purification system for water treatment of claim 1, wherein:

the ultrafiltration unit comprises a water inlet chamber (5), an ultrafiltration membrane component (6), a water production chamber (7), a water production pipe (8) and a water production and storage tank (10), wherein the ultrafiltration membrane component (6) is positioned in the water inlet chamber (5), the water production chamber (7) is positioned above the water inlet chamber (5), two ends of the water production pipe (8) are respectively connected with the water production chamber (7) and the water production and storage tank (10), and an overflow port (19) is arranged at the upper part of the water production and storage tank (10);

the water inlet unit comprises a water inlet groove (1), a main water inlet pipe (2) and a component water inlet pipe (4) which are sequentially connected, the main water inlet pipe (2) is divided into a vertical section and a horizontal section, an outlet of the water inlet groove (1) is connected with the upper end of the vertical section of the main water inlet pipe (2), the upper end of the component water inlet pipe (4) is connected with the lower end of a water inlet chamber (5), and the lower end of the component water inlet pipe (4) is connected with the horizontal section of the main water inlet pipe (2);

the forward washing unit comprises a forward washing water storage tank (13), a forward washing pipe (12) and a forward washing guide pipe (9) which are sequentially connected from top to bottom, wherein the forward washing guide pipe (9) penetrates through a membrane wire top end packaging disc (20) of the ultrafiltration membrane component (6) and is inserted into the interior of a membrane wire of the ultrafiltration membrane component (6);

the siphon unit comprises a siphon (3), a siphon auxiliary pipe (11), a water seal well (14) and a siphon damage pipe (15), the siphon (3) comprises a siphon first vertical section (16), a siphon connecting section (18) and a siphon second vertical section (17) which are sequentially connected, the upper end of the siphon second vertical section (17) is higher than the upper end of the siphon first vertical section (16), the lower end of the siphon first vertical section (16) is connected with the horizontal section of the main water inlet pipe (2), the lower end of the siphon second vertical section (17) is connected to the water seal well (14), the siphon auxiliary pipe (11) is divided into a horizontal section, a vertical section and an inclined branch section, one end of the horizontal section of the siphon auxiliary pipe (11) is connected with the vertical section of the siphon auxiliary pipe (11), the other end of the horizontal section of the siphon auxiliary pipe (11) is connected with the top end of the siphon second vertical section (17), the first end of the inclined branch section of the siphon auxiliary pipe (11) is connected to the middle lower part of the siphon connecting section (18), the second end is connected to siphon auxiliary tube (11) vertical section, and siphon auxiliary tube (11) oblique branch section first end position is higher than siphon auxiliary tube (11) oblique branch section second end, and siphon destroys pipe (15) including interconnect's horizontal segment and vertical section, and siphon destroys pipe (15) horizontal segment one end and is connected with siphon second vertical section (17) top, and siphon destroys pipe (15) vertical section one end and is connected to total inlet tube (2) horizontal segment.

3. The valveless ultrafiltration water purification system for water treatment of claim 2, wherein: the water inlet chamber (5), the ultrafiltration membrane component (6), the water production chamber (7), the water production pipe (8) and the water production water storage tank (10) of the ultrafiltration unit also form a backwashing unit, and water of the backwashing unit flows from the water production water storage tank (10), the water production pipe (8), the water production chamber (7), the ultrafiltration membrane component (6) and the water inlet chamber (5) in sequence.

4. The valveless ultrafiltration water purification system for water treatment of claim 2, wherein: the top surface of the forward washing water storage tank (13) is higher than the top end of the second siphon vertical section (17) by 0.1-0.5 m, and the top end of the main water inlet pipe (2) is higher than the top end of the second siphon vertical section (17) by 0.1-0.5 m.

5. The valveless ultrafiltration water purification system for water treatment of claim 2, wherein: the forward washing guide pipe (9) is arranged at the center of the ultrafiltration membrane component (6), the hollow fiber membrane filaments are surrounded and distributed by taking the forward washing guide pipe as the center, the lower end of the forward washing guide pipe (9) is closed, guide holes (21) are punched on the side wall, a group of holes are formed in the same horizontal plane, the guide holes (21) in the group are uniformly distributed on the pipe wall, the interval between adjacent groups is gradually increased from bottom to top, and the number of the guide holes (21) in each group is gradually reduced from bottom to top.

6. The valveless ultrafiltration water purification system for water treatment of claim 2, wherein: the upper end of the hollow fiber membrane wire of the ultrafiltration membrane component (6) is fixed on the membrane wire top end packaging disc (20), and the lower end is a distributed free end.

7. The valveless ultrafiltration water purification system for water treatment of claim 2, wherein: the overflow port (19) is 0.4-0.6 m higher than the top end of the ultrafiltration membrane component (6).

8. The valveless ultrafiltration water purification system for water treatment of claim 2, wherein: the lower end of the forward washing pipe (12) and the upper end of the component water inlet pipe (4) are both provided with valves and can be disassembled to be loose-jointed.

9. The valveless ultrafiltration water purification system for water treatment of claim 2, wherein: the liquid level of the water seal well (14) is 2.5-5.5 m underground, and the tail end of the siphon second vertical section (17) is 0.5-1 m below the liquid level of the water seal well (14).