Modular submerged siphon type ultrafiltration water purifier

Abstract

The utility model discloses a modularization immersion siphon type ultrafiltration purifier, in turn including pretreatment module, immersion siphon ultrafiltration pool and water production module, and pretreatment module is constituted by water inlet pipe, basket filter, pipeline mixer, jet device, grid flocculation pool and inclined tube sedimentation tank series connection, and is equipped with PAC dosing device, immersion siphon ultrafiltration pool is equipped with immersion siphon ultrafiltration membrane unit, and immersion siphon ultrafiltration membrane unit includes at least one membrane component, and is connected aeration backflush unit, through the unique pipeline design, and the same set of system can realize siphon water production, drainage and reverse flushing function alternately. The utility model discloses utilize siphon principle drive filtration, has reduced operation energy consumption effectively, and through modularization design simultaneously, the installation and expansion of whole set of equipment are convenient, and the cooperation use of automatic backflush and chemical dosing can maintain membrane performance efficiently, has compact structure, energy -conserving high -efficient, high degree of automation and the advantage that operation and maintenance are convenient.

Description

Technical Field

[0001] This utility model relates to the field of water purifiers, and in particular to a modular submersible siphon ultrafiltration water purifier. Background Technology

[0002] Traditional ultrafiltration water purification systems typically employ pressure filtration, powered by a water pump. This results in high energy consumption, and the continuous operation of the pump leads to significant noise and maintenance costs. Furthermore, existing systems often have integrated or non-standard designs for pretreatment, membrane filtration, and cleaning units, resulting in large footprints, difficulties in expansion, and complex on-site installation and commissioning. Backwashing and chemical cleaning processes are often cumbersome, requiring extensive additional piping and power equipment, exhibiting low automation integration, high chemical consumption, and difficulty in effectively controlling operating costs. Therefore, the market urgently needs a new type of ultrafiltration water purification solution that is energy-efficient, compact, easy to install and maintain, and highly automated. Utility Model Content

[0003] (1) Technical problems to be solved

[0004] To address the aforementioned problems in the prior art and to overcome its shortcomings, this utility model provides a modular submersible siphon ultrafiltration water purifier that can be reasonably manufactured and used.

[0005] (2) Technical solution

[0006] To achieve the above technical objectives, this utility model provides a modular submerged siphon ultrafiltration water purifier, comprising a pretreatment module, a submerged siphon ultrafiltration tank, and a water production module connected sequentially along the water flow direction.

[0007] The pretreatment module includes an inlet pipe, a basket filter, a pipe mixer, an ejector, a grid flocculation tank, and an inclined tube sedimentation tank connected in sequence by pipelines; the inlet end of the pipe mixer is connected to a PAC dosing device.

[0008] The submerged siphon ultrafiltration tank is equipped with a submerged siphon ultrafiltration membrane unit, the inlet of which is connected to the outlet of the inclined tube sedimentation tank. The submerged siphon ultrafiltration membrane unit includes at least one membrane module. The submerged siphon ultrafiltration tank is also connected to an aeration backwash unit, the product water module, and a backwash filter.

[0009] The water production module includes a water production pump and a low-level water storage tank; the first outlet pipe of the submerged siphon ultrafiltration membrane unit is directly connected to the low-level water storage tank; the second outlet pipe of the submerged siphon ultrafiltration membrane unit is connected to the inlet of the water production pump, and the outlet of the water production pump is connected to the inlet of the low-level water storage tank; the backwash pipe of the submerged siphon ultrafiltration membrane unit is connected to the outlet of the backwash filter, and the inlet of the backwash filter is connected to the outlet of the backwash pump in the low-level water storage tank;

[0010] The low-level water storage tank is connected to a water supply pipe.

[0011] Preferably, the PAC dosing device includes a motor located at the top and a stirring shaft driven by the motor. The stirring shaft uniformly stirs the agent within the PAC dosing device, and the PAC dosing device is connected to a pipeline mixer via a dosing pipe.

[0012] Preferably, the jet injector is installed on the pipe connecting the pipe mixer and the grid flocculation tank, and the grid flocculation tank is provided with a number of herringbone flocculation grid plates.

[0013] Preferably, the bottom of the grid flocculation tank, the inclined tube sedimentation tank, and the submerged siphon ultrafiltration tank are all provided with sludge guide pipes facing outwards, and sludge discharge valves are installed on the sludge guide pipes, with the outlet of the sludge guide pipes leading to the ditch.

[0014] Preferably, the aeration backwash unit includes a blower and an air inlet pipe, the air inlet pipe is equipped with an air inlet valve, and the blower is connected to the bottom of the submerged siphon ultrafiltration tank through the air inlet pipe.

[0015] Preferably, an alkali dosing tank and an acid dosing tank are also provided; the first outlet of the alkali dosing tank is connected to a pipeline mixer, and the second outlet of the alkali dosing tank is connected to the inlet pipeline of the backwash filter.

[0016] Preferably, the outlet of the acid dosing tank is connected to the inlet pipe of the backwash filter.

[0017] Preferably, a NaClO dosing device is also provided, which has two discharge channels. One discharge channel is connected to the inlet pipe of the backwash filter, and the outlet of the other discharge channel is connected to the main pipe at the intersection of the first and second water outlet pipes.

[0018] Preferably, the ultrafiltration water purifier is also equipped with a PLC control terminal, a touch screen and an electromechanical room, and the pipes used for connection are equipped with electrically controlled valves and flow meters; the submerged siphon ultrafiltration tank is at least three meters higher than the horizontal height of the low-level water storage tank.

[0019] Preferably, the pretreatment module, the submerged siphon ultrafiltration tank, and the water production module are all designed as independent modular units, and the units are connected through standardized interfaces.

[0020] Preferably, the entire ultrafiltration water purifier is made of SUS304 stainless steel plate.

[0021] Preferably, the pipeline mixer, electrically controlled valve, flow meter, related instruments, motor, and electrical control components are all integrated in the electromechanical room, which occupies a small area.

[0022] Preferably, the ultrafiltration water purifier has a remote control function, which can be remotely monitored and controlled via a mobile app, facilitating centralized management.

[0023] Preferably, the membrane module is composed of several bundles of hollow fiber membrane filaments, which are integrated into a curtain structure.

[0024] (3) Beneficial effects

[0025] The advantages of this invention are as follows: By adopting an submerged siphon ultrafiltration design, it combines high-efficiency pretreatment with energy-saving membrane filtration technology. Utilizing the siphon effect generated by the liquid level difference as the core filtration driving force, the permeate pump only operates for a short period during startup, significantly reducing its energy consumption and operating noise, thus achieving energy saving and consumption reduction. The combined design of the pretreatment module, submerged siphon ultrafiltration tank, and permeate module results in a compact equipment structure, facilitating transportation, installation, and subsequent expansion and maintenance, greatly improving project flexibility. This device employs PLC and touchscreen fully automatic control and can also be remotely monitored via a mobile app, offering a high degree of automation and convenient centralized management. Furthermore, the intelligent integration of the aeration backwash unit and the chemical cleaning function of water backwashing, controlled centrally by PLC, effectively reduces chemical consumption and manual intervention, ensuring long-term stability of membrane flux, extending membrane lifespan, and reducing overall system operating and maintenance costs. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments. Wherein:

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0028] The attached diagram is labeled as follows: inlet pipe (1), basket filter (2), PAC dosing device (3), motor (31), stirring shaft (32), pipeline mixer (4); jet injector (5), grid flocculation tank (6), inclined tube sedimentation tank (7), sludge discharge valve (8), trench (9), submerged siphon ultrafiltration tank (10), submerged siphon ultrafiltration membrane unit (101), aeration backwash unit (11), blower (111), air inlet valve (112), product water pump (12), backwash filter (13), NaClO dosing device (14), low-level water storage tank (15), water supply pipe (16), alkali dosing tank (18), acid dosing tank (19). Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0030] Example:

[0031] Please see Figure 1 As shown, the modular submerged siphon ultrafiltration water purifier of this utility model includes a pretreatment module, a submerged siphon ultrafiltration tank 10 and a water production module connected sequentially along the water flow direction.

[0032] The pretreatment module includes an inlet pipe 1, a basket filter 2, a pipe mixer 4, an ejector 5, a grid flocculation tank 6, and an inclined tube sedimentation tank 7, which are connected sequentially by pipes. The inlet end of the pipe mixer 4 is connected to a PAC dosing device 3, which includes a motor 31 located at the top and a stirring shaft 32 driven by the motor 31. The stirring shaft 32 uniformly stirs the agent in the PAC dosing device 3. The PAC dosing device 3 is connected to the pipe mixer 4 through a dosing pipe. The ejector 5 is installed on the pipe connecting the pipe mixer 4 and the grid flocculation tank 6. The grid flocculation tank 6 is provided with several herringbone flocculation grid plates.

[0033] The submerged siphon ultrafiltration tank 10 is equipped with a submerged siphon ultrafiltration membrane unit 101, whose inlet is connected to the outlet of the inclined tube sedimentation tank 7. The submerged siphon ultrafiltration membrane unit 101 includes at least one membrane module, which is composed of several bundles of hollow fiber membrane filaments integrated into a curtain structure. It should be noted that the most common curtain structure is selected in this scheme, but other structures, including but not limited to column type and flat plate type, can still be used in actual use. The submerged siphon ultrafiltration tank 10 is also connected to an aeration backwash unit 11 and the product water module. In order to effectively achieve sludge removal, the bottom of the grid flocculation tank 6, the inclined tube sedimentation tank 7, and the submerged siphon ultrafiltration tank 10 are all provided with sludge guide pipes facing outwards. The sludge guide pipes are equipped with sludge discharge valves 8, and the outlet of the sludge guide pipes leads to the ditch 9. The aeration backwash unit 11 includes a blower 111 and an air inlet pipe. The air inlet pipe is equipped with an air inlet valve 112. The blower 111 is connected to the bottom of the submerged siphon ultrafiltration tank 10 through the air inlet pipe. The aeration backwash unit 11 is used to solve the problem of clogging of the submerged siphon ultrafiltration membrane unit 101.

[0034] The water production module includes a water production pump 12 and a low-level water storage tank 15; the first outlet pipe of the submerged siphon ultrafiltration membrane unit 101 is directly connected to the low-level water storage tank 15; the second outlet pipe of the submerged siphon ultrafiltration membrane unit 101 is connected to the inlet end of the water production pump 12, and the outlet end of the water production pump 12 is connected to the inlet end of the low-level water storage tank 15; the backwash pipe of the submerged siphon ultrafiltration membrane unit 101 is connected to the outlet end of the backwash filter 13, and the inlet end of the backwash filter 13 is connected to the outlet end of the backwash pump in the low-level water storage tank 15.

[0035] This utility model also includes an alkali dosing tank 18, an acid dosing tank 19, and a NaClO dosing device 14. See details below. Figure 1 To effectively control the pH of the liquid, the first outlet of the alkali dosing tank 18 is connected to the pipeline mixer 4, the second outlet of the alkali dosing tank 18 is connected to the inlet pipe of the backwash filter 13, the outlet of the acid dosing tank 19 is connected to the inlet pipe of the backwash filter 13, the NaClO dosing device 14 has two discharge channels, one of which is connected to the inlet pipe of the backwash filter 13, and the outlet of the other discharge channel is connected to the main pipe at the intersection of the first and second water outlet pipes; the low-level water storage tank 15 is connected to the water supply pipe 16.

[0036] It should be noted that, in order to facilitate better centralized control, this device is also equipped with a PLC control terminal, a touch screen and an electromechanical room. The pipes used for connection are equipped with electric control valves and flow meters. The pretreatment module, the submerged siphon ultrafiltration tank 10 and the water production module are all designed as independent modular units, and the units are connected through standardized interfaces. The submerged siphon ultrafiltration tank 10 is at least three meters higher than the low-level water storage tank 15. Its main purpose is to form a stable siphon. When the height difference is ≥3m, the siphon can be quickly established at startup, avoiding frequent vacuuming or secondary startup. In this case, no continuous power is required. The water production can flow out through the submerged siphon ultrafiltration membrane unit (101) by gravity potential energy alone. The water production pump (12) is only used for startup or high load, which significantly reduces the power consumption of operation.

[0037] In the process of using this utility model, the raw water first enters the basket filter through the inlet pipe to remove large particulate impurities, and then is fully mixed with the flocculant added by the PAC dosing device in the pipeline mixer. After being lifted by the jet pump, it enters the grid flocculation tank to form flocs. The flocculated water is separated into mud and water in the inclined tube sedimentation tank, and the supernatant overflows into the submerged siphon ultrafiltration tank.

[0038] After the product water pump is started, a stable siphon effect is formed between the submerged siphon ultrafiltration tank and the low-level water storage tank. Driven by the liquid level difference, the water flows through the submerged ultrafiltration membrane to become product water, which is stored in the low-level clear water tank for later use.

[0039] After running for a period of time, the PLC background automatically sets or the background is manually controlled to perform an automatic cleaning program: stop water production, start the aeration backwash unit to perform air scrubbing on the membrane fibers, and optionally start the backwash pump to pump the water produced in the low-level water storage tank (in actual use, clean water from the external clean water tank can also be used) through the backwash filter into the submerged siphon ultrafiltration membrane unit for backwashing. If necessary, chemicals are added through the connected NaClO, acid, and alkali dosing device for online chemical enhancement cleaning. The cleaning wastewater can be selectively discharged back to the pretreatment unit for further filtration or directly discharged into the ditch, thus completing a complete filtration-cleaning cycle.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A modular submersible siphon-type ultrafiltration water purifier, characterized in that, It includes a pretreatment module, a submerged siphon ultrafiltration tank (10), and a water production module that are connected sequentially along the water flow direction; The pretreatment module includes an inlet pipe (1), a basket filter (2), a pipe mixer (4), an ejector (5), a grid flocculation tank (6), and an inclined tube sedimentation tank (7) connected in sequence by pipes; the inlet end of the pipe mixer (4) is connected to a PAC dosing device (3); The submerged siphon ultrafiltration tank (10) is equipped with a submerged siphon ultrafiltration membrane unit (101) inside, the inlet of which is connected to the outlet of the inclined tube sedimentation tank (7). The submerged siphon ultrafiltration membrane unit (101) includes at least one membrane module. The submerged siphon ultrafiltration tank (10) is also connected to an aeration backwash unit (11), the product water module and a backwash filter (13). The water production module includes a water production pump (12) and a low-level water storage tank (15); the first outlet pipe of the submerged siphon ultrafiltration membrane unit (101) is directly connected to the low-level water storage tank (15); the second outlet pipe of the submerged siphon ultrafiltration membrane unit (101) is connected to the inlet end of the water production pump (12), and the outlet end of the water production pump (12) is connected to the inlet end of the low-level water storage tank (15); the backwash pipe of the submerged siphon ultrafiltration membrane unit (101) is connected to the outlet end of the backwash filter (13), and the inlet end of the backwash filter (13) is connected to the outlet end of the backwash pump in the low-level water storage tank (15); The low-level water storage tank (15) is connected to a water supply pipe (16); The submerged siphon ultrafiltration tank (10) is at least three meters higher than the horizontal height of the low-level water storage tank (15).

2. The modular submersible siphon ultrafiltration water purifier according to claim 1, characterized in that, The PAC dosing device (3) includes a motor (31) located at the top and a stirring shaft (32) driven by the motor (31). The stirring shaft (32) stirs the agent evenly inside the PAC dosing device (3). The PAC dosing device (3) is connected to the pipeline mixer (4) through a dosing pipe.

3. A modular submersible siphon ultrafiltration water purifier according to claim 1, characterized in that, The jet injector (5) is installed on the pipe connecting the pipe mixer (4) and the grid flocculation tank (6), and the grid flocculation tank (6) is provided with several herringbone flocculation grid plates.

4. A modular submersible siphon ultrafiltration water purifier according to claim 1, characterized in that, The bottom of the grid flocculation tank (6), the inclined tube sedimentation tank (7) and the submerged siphon ultrafiltration tank (10) are all provided with sludge guide pipes facing outwards. The sludge guide pipes are equipped with sludge discharge valves (8), and the outlet of the sludge guide pipes leads to the ditch (9).

5. A modular submersible siphon ultrafiltration water purifier according to claim 1, characterized in that, The aeration backwash unit (11) includes a blower (111) and an air inlet pipe. An air inlet valve (112) is provided on the air inlet pipe. The blower (111) is connected to the bottom of the submerged siphon ultrafiltration tank (10) through the air inlet pipe.

6. A modular submersible siphon ultrafiltration water purifier according to claim 1, characterized in that, It is also equipped with an alkali dosing tank (18) and an acid dosing tank (19); The first outlet of the alkali dosing tank (18) is connected to the pipeline mixer (4), and the second outlet of the alkali dosing tank (18) is connected to the inlet pipeline of the backwash filter (13). The outlet of the acid dosing tank (19) is connected to the inlet pipe of the backwash filter (13).

7. A modular submersible siphon ultrafiltration water purifier according to claim 6, characterized in that, It is also equipped with a NaClO dosing device (14), which has two discharge channels. One discharge channel is connected to the inlet pipe of the backwash filter (13), and the outlet of the other discharge channel is connected to the main pipe at the intersection of the first and second water outlet pipes.

8. A modular submersible siphon ultrafiltration water purifier according to any one of claims 1-7, characterized in that, The membrane module is composed of several bundles of hollow fiber membrane filaments.

9. A modular submersible siphon ultrafiltration water purifier according to claim 8, characterized in that, The hollow fiber membrane filaments are integrated into a curtain-like structure.

10. A modular submersible siphon ultrafiltration water purifier according to claim 9, characterized in that, The ultrafiltration water purifier is also equipped with a PLC control terminal, a touch screen and an electromechanical room, and the pipes used for connection are equipped with electric control valves and flow meters; The pretreatment module, the submerged siphon ultrafiltration tank (10) and the water production module are all designed as independent modular units, and the units are connected through standardized interfaces.

Images