Short-process whole-membrane-method drinking water purification device

Abstract

The utility model discloses a short-process whole-membrane-method drinking water purification device. The device comprises a raw water inlet pump, a water outlet pump and a water outlet pump, the conductivity detection device is used for detecting the conductivity of the raw water; the ultrafiltration membrane device is used for performing primary filtration on raw water; the nanofiltration membrane device is communicated with the downstream of the ultrafiltration membrane device and is used for secondary filtration; the reverse osmosis membrane device is communicated with the downstream of the nanofiltration membrane device and is used for performing three-stage filtration; the produced water tank is used for collecting produced water obtained after primary filtration, secondary filtration or tertiary filtration, and the produced water serves as drinking water; the cleaning device is used for respectively cleaning the ultrafiltration membrane device, the nanofiltration membrane device and the reverse osmosis membrane device; and the waste water tank is used for collecting waste water generated by cleaning. The short-process full-membrane drinking water purification device designed by the utility model can realize unattended operation, can meet drinking water purification under various raw water inlet conditions, is short in filtering process, and can effectively reduce the difficulty of device maintenance.

Description

TECHNICAL FIELD

[0001] The utility model relates to drinking water purification technical field, concretely relates to a short process full membrane method drinking water purification device. BACKGROUND

[0002] In the field survival environment, will often face the plight of centralized drinking water source problem highlights. Among them, the water source problem includes: (1) one kind is biological safety problem, and there is the problem of microorganism exceeding standard such as escherichia coli;(2) another kind is chemical safety problem, such as turbidity, nitrate, iron, manganese, fluoride, organic matter, heavy metal, hardness and so on index exceed standard problem. At the same time, the raw water quality in field survival environment is poor, when rainstorm, flood, drought, water quality fluctuation is big, cannot guarantee drinking water safety, and to filter membrane can easily cause the condition of rapid pollution.

[0003] Because, the fluctuation of raw water quality in field survival environment is big, including raw water of different salt concentrations such as surface water, groundwater, bitter saline water and seawater, which also puts forward high requirements on the filtering capacity of drinking water purification device, and it needs to set different filtering modules according to different raw water quality to meet the water demand.

[0004] However, the traditional drinking water purification device has long process, and cannot meet the water quality filtering demand of various application scenes (i.e. cannot realize different filtering functions according to different raw water quality), resulting in low degree of automation, high requirement for management personnel, leading to great challenge for long-term stable operation and water quality standard of drinking water purification device, and the present application proposes a short process full membrane method drinking water purification device. UTILITY MODEL CONTENT

[0005] The utility model aims at: in view of the problems of long process of traditional drinking water purification device, different filtering functions cannot be realized according to different raw water quality, and a short process full membrane method drinking water purification device is designed, and the above problems are solved.

[0006] To achieve the above object, the utility model is realized by the following technical schemes:

[0007] The utility model designs a short process full membrane method drinking water purification device, and the drinking water purification device comprises:

[0008] Raw water inlet pump;

[0009] Conductivity detection device, which is used for detecting the conductivity of raw water;

[0010] Ultrafiltration membrane device, which is used for primary filtering of raw water;

[0011] Nanofiltration membrane device, which is communicated downstream of the ultrafiltration membrane device and is used for secondary filtering;

[0012] a reverse osmosis membrane device, which is connected downstream of the nanofiltration membrane device and is used for performing tertiary filtration;

[0013] a water production tank, which is used for collecting water produced after primary filtration, secondary filtration or tertiary filtration, and the water is used as drinking water;

[0014] a cleaning device, which is used for cleaning the ultrafiltration membrane device, the nanofiltration membrane device and the reverse osmosis membrane device respectively;

[0015] and a wastewater tank, which is used for collecting wastewater produced by cleaning.

[0016] Specifically, the water production pipeline used in the short-process full-membrane drinking water purification device designed in the utility model can be made of UPVC, PPR or 304 stainless steel.

[0017] Further, a short-process full-membrane drinking water purification device: the drinking water purification device further comprises a first booster pump, which is arranged between the ultrafiltration membrane device and the nanofiltration membrane device, and is used for pumping water produced after primary filtration in the ultrafiltration membrane device into the nanofiltration membrane device; the drinking water purification device further comprises a second booster pump, which is arranged between the nanofiltration membrane device and the reverse osmosis membrane device, and is used for pumping water produced after secondary filtration in the nanofiltration membrane device into the reverse osmosis membrane device.

[0018] Further, a short-process full-membrane drinking water purification device: the first booster pump is a centrifugal pump, the material of which is selected from 316L stainless steel, the working pressure of the first booster pump is set to 0.3-1.0 MPa, and the flow rate is set to 0.5-1.5 m 3 / h; the second booster pump is a centrifugal pump or a plunger pump, the material of which is selected from 316L stainless steel or 2507 duplex steel, the working pressure of the second booster pump is set to 1.0-5.0 MPa, and the flow rate is set to 0.5-1.5 m 3 / h.

[0019] Further, a short-process full-membrane drinking water purification device: if the conductivity detection device detects that the conductivity σ of raw water satisfies σ≤1000 μs / cm, then water produced after primary filtration of the raw water in the ultrafiltration membrane device enters the water production tank;

[0020] If the conductivity detection device detects that the conductivity of the raw water σ satisfies 1000 < σ ≤ 10000 μs / cm, the raw water is firstly filtered by the ultrafiltration membrane device, and then filtered by the nanofiltration membrane device, and then the produced water enters the produced water tank; if the conductivity detection device detects that the conductivity of the raw water σ satisfies σ > 10000 μs / cm, the raw water is sequentially filtered by the ultrafiltration membrane device, the nanofiltration membrane device and the reverse osmosis membrane device, and then the produced water enters the produced water tank.

[0021] Further, a short-process full-membrane method water purification device: the raw water inlet pump adopts a horizontal or vertical centrifugal pump, the working pressure of the raw water inlet pump is 0.1-0.3 MPa, the material is selected from 316L stainless steel, the flow rate is 0.5-1.5 m 3 / h.

[0022] Further, a short-process full-membrane method water purification device: the ultrafiltration membrane device adopts an external pressure type hollow fiber ultrafiltration membrane, the material is selected from polysulfone, polyether sulfone or PVDF; the pore size of the hollow fiber ultrafiltration membrane is 0.01-0.03 μm, the inner diameter of the hollow fiber ultrafiltration membrane is 0.7-1.0 mm, the outer diameter of the hollow fiber ultrafiltration membrane is 1.3-1.5 mm, and the effective membrane area of the hollow fiber ultrafiltration membrane is 2.0-10.0 m 2 .

[0023] Further, a short-process full-membrane method water purification device: the nanofiltration membrane device adopts an external pressure type hollow fiber nanofiltration membrane, the material is selected from sulfonated polysulfone, polybenzimidazole, polyimide or nylon 6; the pore size of the hollow fiber nanofiltration membrane is 0.001-0.005 μm, the inner diameter of the hollow fiber nanofiltration membrane is 0.7-1.0 mm, the outer diameter of the hollow fiber nanofiltration membrane is 1.3-1.5 mm, and the effective membrane area of the hollow fiber nanofiltration membrane is 2.0-10.0 m 2 .

[0024] Further, a short-process full-membrane method water purification device: the reverse osmosis membrane device adopts a roll-type reverse osmosis membrane assembly, the membrane length of the reverse osmosis membrane assembly is 3012-4040 mm, and the effective membrane area of the reverse osmosis membrane assembly is 2.0-10.0 m 2 .

[0025] Further, a short-process full-membrane method water purification device: the water purification device further comprises a waste water conductivity detection device for detecting the conductivity of the waste water in the waste water tank.

[0026] Further, a short-process full-membrane method water purification device: the water purification device further comprises a produced water conductivity detection device for detecting the conductivity of the produced water in the produced water tank.

[0027] The utility model discloses a beneficial effect:

[0028] (1) the short process full membrane method drinking water purification device of the utility model discloses, it includes ultrafiltration membrane device, nanofiltration membrane device, reverse osmosis membrane device, cleaning device etc., can realize unattended, and it can satisfy the drinking water purification of various raw water water condition, and the purification device filtering process is short, can effectively reduce the difficulty of device maintenance. Among them, the ultrafiltration membrane device, nanofiltration membrane device and reverse osmosis membrane device adopt the independent design of module type, and are convenient to replace. At the same time, the purification device of the utility model discloses can carry out grading purification according to the water quality characteristics of raw water to ensure that different water quality can reach the reference standard after purification. In addition, the short process full membrane method drinking water purification device of the utility model discloses is also provided with a cleaning device, can effectively clean membrane device (including ultrafiltration membrane device, nanofiltration membrane device, reverse osmosis membrane device) regularly, so the drinking water purification device can be applicable to the drinking water purification of surface water, underground water, bitter saline water and seawater etc.

[0029] (2) the short process full membrane method drinking water purification device of the utility model discloses is a modular drinking water purification device, which integrates the membrane assembly, cleaning device and the like required by the full membrane method into one body, has high automation degree, and effectively treats raw water through physical and chemical methods, so that the drinking water standard is reached. Compared with the traditional field water supply facility, the drinking water purification device of the utility model discloses can solve the existing emergency drinking water safety problem, so that personnel can drink qualified and healthy water, which is conducive to continuously consolidating the drinking water standard and upgrading achievements, and has good economic benefits. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0031] Figure 1 The structural design diagram of a short process full membrane method drinking water purification device designed for the embodiment 1 of the utility model.

[0032] The marks in the drawing are as follows:

[0033] 1-raw water inlet pump, 2-conductivity detection device, 3-ultrafiltration membrane device, 4-nanofiltration membrane device, 5-reverse osmosis membrane device, 6-water production tank, 7-cleaning device, 8-waste water tank, 9-first booster pump, 10-second booster pump, 11-waste water conductivity detection device, 12-water production conductivity detection device. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is merely illustrative in nature and is in no way limiting on the present application and its applications or uses. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort fall within the scope of the present application.

[0035] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom", etc. indicate the orientation or positional relationship, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can be explicitly or implicitly included one or more features. Moreover, the terms "first", "second", etc. are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0036] Embodiment 1

[0037] As shown in Figure 1 Embodiment 1, a short process full membrane water purification device is designed, which comprises:

[0038] The raw water inlet pump 1 is a vertical centrifugal pump, the working pressure of the raw water inlet pump 1 is 0.3MPa, the material thereof is selected from 316L stainless steel, the flow rate thereof is 0.5m 3 / h, and the water production pipelines involved in the water purification device are made of 304 stainless steel;

[0039] The conductance detection device 2 is arranged downstream of the raw water inlet pump 1 and is used for detecting the conductivity of the raw water supplied by the raw water inlet pump 1;

[0040] The ultrafiltration membrane device 3 is used for primary filtration of the raw water, the ultrafiltration membrane device 3 adopts an external pressure type hollow fiber ultrafiltration membrane, the material thereof is selected from PVDF, the pore size of the hollow fiber ultrafiltration membrane is 0.02μm, the inner diameter of the hollow fiber ultrafiltration membrane is 1.0mm, the outer diameter thereof is 1.5mm, and the effective membrane area of the hollow fiber ultrafiltration membrane is 2.0m2 ;

[0041] Nanofiltration membrane device 4, connected downstream of ultrafiltration membrane device 3, is used for secondary filtration. Nanofiltration membrane device 4 employs an externally pressurized hollow fiber nanofiltration membrane made of polyimide. The pore size of the hollow fiber nanofiltration membrane is 0.001 μm, with an inner diameter of 0.7 mm and an outer diameter of 1.3 mm. The effective membrane area of ​​the hollow fiber nanofiltration membrane is 3.0 m². 2 ;

[0042] A reverse osmosis membrane unit 5, connected downstream of the nanofiltration membrane unit 4, is used for tertiary filtration. The reverse osmosis membrane unit 5 employs a spiral wound reverse osmosis membrane module with a membrane length of 3012 mm and an effective membrane area of ​​2.0 m². 2 ;

[0043] The water production tank 6 is used to collect the water produced after primary filtration, secondary filtration or tertiary filtration, and the water is used as drinking water.

[0044] The cleaning device 7 is used to clean the ultrafiltration membrane device 3, the nanofiltration membrane device 4, and the reverse osmosis membrane device 5 respectively. The cleaning device 7 includes a 50.0L PE tank and a cleaning pump (a 316L stainless steel centrifugal pump with a flow rate of 1.5m³ / h). 3 / h);

[0045] Wastewater tank 8 is used to collect wastewater generated after cleaning the ultrafiltration membrane device 3, nanofiltration membrane device 4 and reverse osmosis membrane device 5;

[0046] A first booster pump 9 is disposed between the ultrafiltration membrane device 3 and the nanofiltration membrane device 4 to pump the permeate from the ultrafiltration membrane device 3 into the nanofiltration membrane device 4. The first booster pump 9 is a centrifugal pump made of 316L stainless steel, and its operating pressure is set to 1.0 MPa and its flow rate is set to 0.5 m³ / s. 3 / h;

[0047] A second booster pump 10 is disposed between the nanofiltration membrane device 4 and the reverse osmosis membrane device 5 to pump the permeate from the nanofiltration membrane device 4 into the reverse osmosis membrane device 5. The second booster pump 10 is a plunger pump made of 2507 duplex stainless steel. The operating pressure of the second booster pump 10 is set to 5.0 MPa, and the flow rate is set to 0.5 m³ / s. 3 / h;

[0048] Wastewater conductivity detection device 11 is used to detect the conductivity of wastewater in the wastewater tank 8;

[0049] and a produced water conductivity detection device 12 for detecting the conductivity of the produced water in the produced water tank 6.

[0050] The use mode of the short-process full-membrane water purification device designed in the above embodiment 1 is the following three cases:

[0051] ① When the conductivity σ of the raw water supplied by the raw water inlet pump 1 is detected by the conductivity detection device 2, and σ≤1000 μs / cm is satisfied, the raw water is filtered by the ultrafiltration membrane device 3 for primary filtration, and the produced water can directly enter the produced water tank 6, and the drinking water in the produced water tank 6 can reach the drinking standard at this time;

[0052] ② When the conductivity σ of the raw water supplied by the raw water inlet pump 1 is detected by the conductivity detection device 2, and 1000<σ≤10000 μs / cm is satisfied, the raw water is first filtered by the ultrafiltration membrane device 3 for primary filtration, the produced water after primary filtration is supplied to the nanofiltration membrane device 4 by the first booster pump 9 for secondary filtration, and the produced water after secondary filtration enters the produced water tank 6, and the drinking water in the produced water tank 6 can reach the drinking standard at this time;

[0053] ③ When the conductivity σ of the raw water supplied by the raw water inlet pump 1 is detected by the conductivity detection device 2, and σ>10000 μs / cm is satisfied, the raw water is first filtered by the ultrafiltration membrane device 3 for primary filtration, the produced water after primary filtration is supplied to the nanofiltration membrane device 4 by the first booster pump 9 for secondary filtration, and the produced water after secondary filtration is supplied to the reverse osmosis membrane device 5 by the second booster pump 10 for tertiary filtration, and the produced water after tertiary filtration enters the produced water tank 6, and the drinking water in the produced water tank 6 can reach the drinking standard at this time.

[0054] The short-process full-membrane water purification device designed in the above embodiment 1 includes the ultrafiltration membrane device 3, the nanofiltration membrane device 4, and the reverse osmosis membrane device 5, and can realize unattended operation, can purify raw water of various water qualities, has a short filtration and purification process, and the short-process full-membrane water purification device of the embodiment 1 is designed in a modular and independent manner, which can effectively reduce the difficulty of device maintenance and is easy to replace.

[0055] Meanwhile, the short-process full-membrane water purification device designed in this embodiment 1 can be graded purification according to the water quality characteristics of raw water, so that the raw water of different water quality can reach the reference standard after purification by the water purification device of this embodiment 1. In addition, the short-process full-membrane water purification device of this embodiment 1 is also provided with a cleaning device 7, which can effectively clean the membrane device (including the ultrafiltration membrane device 3, the nanofiltration membrane device 4 and the reverse osmosis membrane device 5) regularly, so that the water purification device in this embodiment 1 can be suitable for purifying drinking water from raw water (water source) such as surface water, underground water, brackish water and seawater.

[0056] The above is the preferred embodiment of the present application, which is used to explain the present application, and is not used to limit the present application. Any obvious changes or changes derived from the technical solution of the present application are still within the protection scope of the present application.

Claims

1. A short process full membrane method drinking water purification device, characterized by, The water purification device comprises: a raw water inlet pump (1); a conductivity detection device (2) for detecting the conductivity of raw water; an ultrafiltration membrane device (3) for primary filtration of raw water; a nanofiltration membrane device (4) connected downstream of the ultrafiltration membrane device (3) for secondary filtration; a reverse osmosis membrane device (5) connected downstream of the nanofiltration membrane device (4) for tertiary filtration; a product water tank (6) for collecting product water after primary, secondary or tertiary filtration, which is used as drinking water; a cleaning device (7) for cleaning the ultrafiltration membrane device (3), nanofiltration membrane device (4) and reverse osmosis membrane device (5) respectively; and a wastewater tank (8) for collecting wastewater generated by cleaning.

2. The short-flow all-membrane water purification device according to claim 1, characterized in that, The water purification device further comprises a first booster pump (9) arranged between the ultrafiltration membrane device (3) and the nanofiltration membrane device (4) for pumping product water after primary filtration in the ultrafiltration membrane device (3) into the nanofiltration membrane device (4); The water purification device further comprises a second booster pump (10) arranged between the nanofiltration membrane device (4) and the reverse osmosis membrane device (5) for pumping product water after secondary filtration in the nanofiltration membrane device (4) into the reverse osmosis membrane device (5).

3. The short-flow full-membrane water purification device according to claim 2, characterized in that, The first booster pump (9) is a centrifugal pump, which is made of 316L stainless steel, and the working pressure of the first booster pump (9) is set to 0.3-1.0 MPa, and the flow rate is set to 0.5-1.5 m 3 / h. The second booster pump (10) is a centrifugal pump or a plunger pump, and is made of 316L stainless steel or 2507 duplex steel. The working pressure of the second booster pump (10) is set to 1.0-5.0 MPa, and the flow rate is set to 0.5-1.5 m 3 / h.

4. The short-flow full-membrane water purification device according to claim 1, characterized in that, If the conductivity σ of raw water detected by the conductivity detection device (2) satisfies σ≤1000 μs / cm, then the product water after primary filtration of raw water in the ultrafiltration membrane device (3) enters the product water tank (6); If the conductivity σ of raw water detected by the conductivity detection device (2) satisfies 1000<σ≤10000 μs / cm, then the product water after primary filtration of raw water in the ultrafiltration membrane device (3) and secondary filtration in the nanofiltration membrane device (4) enters the product water tank (6); If the conductivity σ of raw water detected by the conductivity detection device (2) satisfies σ>10000 μs / cm, then the product water after primary filtration in the ultrafiltration membrane device (3), secondary filtration in the nanofiltration membrane device (4) and tertiary filtration in the reverse osmosis membrane device (5) enters the product water tank (6).

5. The short process full membrane method drinking water purification device according to claim 1, characterized in that, The raw water intake pump (1) adopts horizontal or vertical centrifugal pump, the working pressure of the raw water intake pump (1) is 0.1-0.3 MPa, the material is selected 316L stainless steel, the flow is 0.5-1.5 m 3 / h.

6. A short process full membrane method drinking water purification device according to claim 1, characterized in that, The ultrafiltration membrane device (3) adopts an external pressure type hollow fiber ultrafiltration membrane, and the material is selected from polysulfone, polyether sulfone or PVDF; The hollow fiber ultrafiltration membrane has a pore size of 0.01-0.03 μm, an inner diameter of 0.7-1.0 mm, an outer diameter of 1.3-1.5 mm, and an effective membrane area of 2.0-10.0 m 2 .

7. The short-flow full-membrane method water purification device according to claim 1, characterized by, The nanofiltration membrane device (4) adopts an external pressure type hollow fiber nanofiltration membrane, and the material is selected from sulfonated polysulfone, polybenzimidazole, polyimide or nylon 6; The hollow fiber nanofiltration membrane has a pore size of 0.001-0.005 μm, an inner diameter of 0.7-1.0 mm, an outer diameter of 1.3-1.5 mm, and an effective membrane area of 2.0-10.0 m 2 .

8. The short-flow full-membrane method water purification device according to claim 1, characterized by, The reverse osmosis membrane device (5) adopts a roll type reverse osmosis membrane assembly, the membrane length of the reverse osmosis membrane assembly is 3012-4040 mm, and the effective membrane area is 2.0-10.0 m 2 .

9. The short process full membrane method drinking water purification device according to claim 1, characterized in that, The water purification device further comprises a wastewater conductivity detection device (11) for detecting the conductivity of wastewater in the wastewater tank (8).

10. The short-flow full-membrane method water purification device according to claim 1, characterized by, The water purification device further comprises a product water conductivity detection device (12) for detecting the conductivity of product water in the product water tank (6).

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