CN219279660U

CN219279660U - Air-floating membrane pool and water treatment system

Info

Publication number: CN219279660U
Application number: CN202222985094.5U
Authority: CN
Inventors: 刘志远; 芮旻; 吴国荣; 钟燕敏
Original assignee: Shanghai Municipal Engineering Design Insitute Group Co Ltd
Current assignee: Shanghai Municipal Engineering Design Insitute Group Co Ltd
Priority date: 2022-11-09
Filing date: 2022-11-09
Publication date: 2023-06-30
Anticipated expiration: 2032-11-09

Abstract

The utility model discloses an air-floating membrane pool and a water treatment system, wherein the air-floating membrane pool comprises a pool body, and the pool body comprises a water distribution main channel, a water falling weir, a flocculation zone, a contact zone and a separation zone which are sequentially communicated. The air-floating membrane pool and the water treatment system provided by the utility model are arranged in a structure by highly integrating and integrating the mixing, flocculation, air-floating, sedimentation and ultrafiltration membrane filtration process units on the system layout, and have the characteristics of less construction land, small head loss and low construction and operation cost; the structure has simple and regular external structure, can be arranged in single lattice, is suitable for small water volume treatment occasions, can be arranged in parallel or symmetrically in multiple lattices, is suitable for large water volume treatment occasions, and is a high-efficiency low-consumption water supply treatment system.

Description

Air-floating membrane pool and water treatment system

Technical Field

The utility model belongs to the technical field of water supply treatment, relates to a water treatment system for a water supply plant, and in particular relates to an air flotation membrane tank and a water treatment system.

Background

At present, ultrafiltration membrane filtration technology is adopted in tap water plant treatment, and the technology can effectively remove particles and microorganisms, and has high automation level and small occupied area. One part of water plants is provided with ultrafiltration membrane treatment units at the process end of the water plants to further reduce the turbidity of produced water and improve the biological safety of produced water, and the other part of water plants is provided with ultrafiltration membrane treatment units at the front end of nanofiltration membranes or reverse osmosis treatment units as pretreatment processes to meet the water inlet requirements of the nanofiltration membranes or the reverse osmosis treatment units. It is worth noting that the ultrafiltration membrane has shorter application time in a water works, has single process combination form based on the ultrafiltration membrane treatment technology, and has the defects of poor floor space intensive property, high construction and operation cost, low fusion of process units and the like.

Disclosure of Invention

In view of the above, the present utility model is directed to an air-floating membrane tank and a water treatment system, which solve the drawbacks of the prior art.

In order to achieve the above object, the present utility model is achieved by the following technical solutions:

in one aspect, an air-float membrane pool is provided, which comprises a pool body, wherein the pool body comprises a water distribution main canal, a water falling weir, a flocculation area, a contact area and a separation area which are communicated in sequence, the water distribution main canal is connected with a water inlet pipe provided with a dosing device, a bubble releaser is arranged in the contact area, the bubble releaser is connected with a gas dissolving device, an ultrafiltration membrane component is arranged in the separation area, and a slag scraping component is arranged in the separation area.

And the air-float membrane pool is characterized in that the drop height of the drop weir is more than 5cm.

And a folded plate is arranged in the flocculation area, as in the air-float membrane pool.

The top of the ultrafiltration membrane component is 1-3 m away from the liquid level.

And the ultrafiltration membrane component is an organic membrane or a ceramic membrane.

And the ultrafiltration membrane component in the separation zone is provided with an ultrafiltration membrane cleaning component connecting port.

In another aspect, a water treatment system is provided, which is formed by connecting at least one air-float membrane pool according to any one of the above-mentioned steps separately or sequentially.

The technical scheme of the utility model has the beneficial effects that:

the process units are matched in a synergistic way, and the functions are highly synergistic; the mixing, flocculating, air floating, precipitating and ultra-filtration membrane filtration process units are highly integrated and arranged in one structure, so that the occupied area is small, the head loss is small, and the construction and operation costs are low; the external structure is simple and regular, and the device not only can be arranged in a single grid mode and is suitable for small water volume treatment occasions, but also can be arranged in parallel or symmetrically in multiple grids mode and is suitable for large water volume treatment occasions.

Drawings

In order to further explain the above objects, structural features and effects of the present utility model, the present utility model will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic top plan view of a preferred embodiment of the present utility model;

FIG. 2 is a schematic top plan view of a preferred embodiment of the present utility model;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 4 is a cross-sectional view taken along the line B-B in FIG. 1;

in the figure: 1. a water distribution main channel; 2. a water falling weir; 3. a flocculation zone; 4. a contact region; 5. a separation zone; 6. a water inlet pipe; 7. a bubble releaser; 8. a gas dissolving device; 9. an ultrafiltration membrane module; 10. a mixing device; 11. a dosing tube; 12. single-grid water inlet gate; 13. a folded plate; 14. an air flushing pipe; 15. a water producing pipe; 16. a clear water main pipe; 17. a chemical washing circulation water outlet pipe; 18. a chemical washing circulating water return pipe; 19. discharging mud and emptying the pipe; 20. a slag scraping machine; 21. a slag discharging channel; 22. and a slag discharging pipe.

Detailed Description

The utility model is further described below with reference to the drawings and specific examples, which are not intended to be limiting.

Referring to fig. 1, 2, 3 and 4, the utility model provides an air flotation membrane pool, which comprises a pool body, wherein the pool body comprises a water distribution main channel 1, a water fall weir 2, a flocculation zone 3, a contact zone 4 and a separation zone 5 which are sequentially communicated. The water distribution main canal 1 is connected with a water inlet pipe 6 provided with a dosing device, a bubble releaser 7 is arranged in the contact area 4, the bubble releaser 7 is connected with a gas dissolving device 8, the gas dissolving device 8 is matched with a gas inlet pump and a reflux water pump, an ultrafiltration membrane component 9 is arranged in the separation area 5, and a slag scraping component is arranged in the separation area 5. During operation, water to be treated enters the main water distribution canal 1 after being mixed by adding medicines through the water inlet pipe 6, enters the flocculation zone 3 through the water falling weir 2 to perform flocculation reaction, then enters the separation zone 5 after entering the contact zone 4 to be contacted with return water containing tiny bubbles sprayed by the bubble releaser 7, and is filtered through the ultrafiltration membrane component 9 to obtain clear water, wherein the flocs with smaller density float to the water surface, the slag is scraped and discharged through the slag scraping component, and the flocs with larger density are precipitated to the bottom of the tank and discharged.

With continued reference to the drawings, the dosing device includes a mixing device 10 and a dosing tube 11 disposed on the mixing device 10, specifically, the mixing device 10 is preferably a tubular static mixer, the dosing tube 11 may be a dosing tube for one agent or a dosing tube for multiple agents, when the raw water has turbidity removal requirements, a coagulant such as polyaluminum chloride, aluminum sulfate, ferric chloride, etc., and when the raw water has turbidity and organic matter removal requirements, a powder activated carbon and a coagulant may be respectively added.

The water falling weir 2 is arranged at the front part of the flocculation zone 3 in the Shan Gechi body, and the water falling height is preferably more than 5cm. The end of the water falling weir 2 is provided with a single-grid water inlet gate 12.

The flocculation zone 3 is internally provided with a folded plate 13, and the folded plate 13 is preferably made of 304 stainless steel, and the thickness is more than 2mm.

With continued reference to fig. 1-4, the ultrafiltration membrane assembly 9 is an organic or ceramic membrane, and the top of the ultrafiltration membrane assembly 9 is 1-3 m from the liquid surface.

The ultrafiltration membrane component in the separation zone 5 is provided with an ultrafiltration membrane cleaning component connection port, and the ultrafiltration membrane cleaning provided by the ultrafiltration membrane cleaning component comprises physical cleaning, chemical maintenance cleaning and chemical recovery cleaning. The ultrafiltration membrane cleaning component comprises an air flushing pipe 14, a water production pipe 15, a clear water main pipe 16, a chemical washing circulation water outlet pipe 17, a back flushing water pump, an air compressor or an air blower, a chemical circulation pump, a chemical washing circulation water return pipe 18 and the like. During physical cleaning and chemical maintenance cleaning, gas enters the ultrafiltration membrane assembly 9 through the gas flushing pipe 14 to flush the ultrafiltration membrane assembly 9, and meanwhile, treated water enters the ultrafiltration membrane assembly 9 through the water production pipe 15 and the clear water main pipe 16, passes through the ultrafiltration membrane, enters the separation zone 5 of the tank body, and is discharged through the sludge discharge blow-down pipe 19 arranged at the bottom of the tank. When the chemical recovery cleaning is performed, water to be filtered in the separation zone 5 of the tank body returns to the separation zone 5 of the tank body through the ultrafiltration membrane component 9, the chemical cleaning circulation water outlet pipe 17, the chemical circulation pump and the chemical cleaning circulation water return pipe 18 for circulation cleaning.

The slag scraping assembly comprises a slag scraping machine 20, a slag discharging channel 21 and a slag discharging pipe 22, the flocs with smaller density, which float up to the water surface, are scraped to the slag discharging channel 21 by the slag scraping machine 20 and discharged through the slag discharging pipe 22, and the flocs with larger density are deposited to the bottom of the tank and discharged through a sludge discharging pipe 19 arranged at the bottom of the tank.

The utility model also provides a water treatment system which is formed by connecting at least one air-float membrane pool singly or sequentially.

The air-floating membrane pool and the water treatment system provided by the utility model are arranged in a structure by highly integrating and integrating the mixing, flocculation, air-floating, sedimentation and ultrafiltration membrane filtration process units on the system layout, and have the characteristics of less construction land, small head loss and low construction and operation cost; the external structure of the structure is simple and regular, the structure can be arranged in single lattice, is suitable for small water volume treatment occasions, can be arranged in parallel or symmetrically in multiple lattices, is suitable for large water volume treatment occasions, and is a high-efficiency low-consumption water supply treatment system; the method has the advantages of simpler process flow, wider application range and deeper process unit fusion, and obviously saves construction land and reduces construction and operation cost on the premise of ensuring water quality.

The foregoing is merely illustrative of the preferred embodiments of the present utility model and is not intended to limit the embodiments and scope of the present utility model, and it should be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present utility model, and are intended to be included in the scope of the present utility model.

Claims

1. The utility model provides an air supporting membrane pond, its characterized in that includes the cell body, the cell body is including the water distribution main canal, the weir that drops, flocculation zone, contact zone and the separation zone of intercommunication in proper order, the inlet tube that a configuration charge device was connected to the water distribution main canal, be equipped with the bubble releaser in the contact zone, the bubble releaser is connected a dissolved air device, be equipped with the milipore filter subassembly in the separation zone, the separation zone disposes and scrapes the sediment subassembly.

2. The air-floating membrane pond of claim 1, wherein the drop height of the drop weir is greater than 5cm.

3. The air-floating membrane cell of claim 1, wherein a flap is disposed in the flocculation zone.

4. The air flotation membrane cell of claim 1, wherein the top of the ultrafiltration membrane assembly is 1 to 3m from the liquid surface.

5. The air flotation membrane cell of claim 1, wherein the ultrafiltration membrane module is an organic membrane or a ceramic membrane.

6. The air-float membrane cell of claim 1 wherein said ultrafiltration membrane module in said separation zone is configured with an ultrafiltration membrane cleaning module connection port.

7. A water treatment system comprising at least one air-floating membrane tank according to any one of claims 1 to 6, which are connected individually or sequentially.