Double-membrane wastewater treatment device based on full-automatic ultrafiltration and RO (reverse osmosis)

Abstract

The utility model relates to the technical field of wastewater treatment, and discloses a double-membrane wastewater treatment device based on full-automatic ultrafiltration and RO (reverse osmosis), which comprises an ultrafiltration membrane group and an RO membrane group which are connected through a connecting pipe, an automatic water inlet pipe and an automatic water outlet pipe are fixedly arranged at the ends, far away from the connecting pipe, of the ultrafiltration membrane group and the RO membrane group respectively; a first electromagnetic valve is arranged on the pipe wall of the automatic water inlet pipe, a second electromagnetic valve is arranged on the pipe wall of the connecting pipe, a third electromagnetic valve is arranged on the pipe wall of the automatic water outlet pipe, an automatic cleaning water pipe is fixedly arranged between the pipe wall of the connecting pipe and the pipe wall of the automatic water outlet pipe, and blow-off pipes are arranged on the pipe wall of the connecting pipe and the pipe wall of the automatic water inlet pipe. According to the utility model, double-membrane wastewater treatment based on full-automatic ultrafiltration and RO (Reverse Osmosis) is realized, and the reverse flushing mechanism is arranged, so that impurities in the ultrafiltration membrane group and the RO membrane group are treated, and the wastewater treatment quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to a dual-membrane wastewater treatment device based on full-automatic ultrafiltration + RO reverse osmosis. Background Technique

[0002] When processing mechanical parts in factories, a large amount of aqueous cutting fluid, emulsion and aqueous cleaning agent are required to lubricate and clean the processed workpieces. However, this will generate a large amount of waste liquid, which contains industrial production materials, intermediate products, by-products and pollutants generated during the production process that are lost with water. The direct discharge of these pollutants will cause environmental pollution. Therefore, many machining factories use waste liquid treatment systems to treat waste liquid.

[0003] Among them, the publication (announcement) number: CN207792842U discloses a dual-membrane wastewater treatment system based on full-automatic ultrafiltration + RO reverse osmosis, belonging to the technical field of sewage treatment; the utility model includes a PLC control system, a raw liquid tank, a clear liquid storage tank, a concentrated liquid tank, a circulating cleaning device and a circulating device. The circulating device includes a first-stage circulating loop, a second-stage circulating loop, a third-stage circulating loop and a fourth-stage circulating loop connected in sequence along the raw liquid flow direction. Each circulating loop includes a circulating water tank and a membrane filtration device. The circulating cleaning device contains cleaning liquid, and the cleaning liquid is cleaned in the order of the fourth-stage circulating loop, the third-stage circulating loop, the second-stage circulating loop to the first-stage circulating loop.

[0004] In the above solution, it is proposed to combine ultrafiltration membranes + RO reverse osmosis membranes to treat wastewater. However, after long-term use, the ultrafiltration membranes + RO reverse osmosis membranes will be blocked due to excessive impurities, thus affecting the filtration effect of sewage. For this reason, a dual-membrane wastewater treatment device based on full-automatic ultrafiltration + RO reverse osmosis is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to solve the problems raised in the background technique in the prior art, and to propose a dual-membrane wastewater treatment device based on full-automatic ultrafiltration + RO reverse osmosis.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A dual-membrane wastewater treatment device based on full-automatic ultrafiltration + RO reverse osmosis, comprising an ultrafiltration membrane module and an RO reverse osmosis membrane module. The ultrafiltration membrane module and the RO reverse osmosis membrane module are connected by a connecting pipe. One ends of the ultrafiltration membrane module and the RO reverse osmosis membrane module away from the connecting pipe are respectively fixedly provided with an automatic water inlet pipe and an automatic water outlet pipe. A first electromagnetic valve is arranged on the pipe wall of the automatic water inlet pipe, a second electromagnetic valve is arranged on the pipe wall of the connecting pipe, a third electromagnetic valve is arranged on the pipe wall of the automatic water outlet pipe. An automatic cleaning water pipe is fixedly arranged between the pipe wall of the connecting pipe and the pipe wall of the automatic water outlet pipe. Drain pipes are arranged on the pipe walls of both the connecting pipe and the automatic water inlet pipe.

[0008] Preferably, the automatic water inlet pipe, the automatic water outlet pipe and the automatic cleaning water pipe all adopt three-way pipes.

[0009] Preferably, pipe caps are arranged at the ends of both the automatic cleaning water pipe and the drain pipe.

[0010] Preferably, one end of the automatic cleaning water pipe is located between the ultrafiltration membrane module and the second electromagnetic valve, and the other end of the automatic cleaning water pipe is located between the RO reverse osmosis membrane module and the third electromagnetic valve.

[0011] Preferably, swivel pipe joints are arranged at both ends of the ultrafiltration membrane module and both ends of the RO reverse osmosis membrane module.

[0012] Preferably, the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are all electrically connected to an external PLC controller.

[0013] Compared with the prior art, the present utility model provides a dual-membrane wastewater treatment device based on full-automatic ultrafiltration + RO reverse osmosis, having the following beneficial effects:

[0014] 1. For the dual-membrane wastewater treatment device based on full-automatic ultrafiltration + RO reverse osmosis, through the provided ultrafiltration membrane module, RO reverse osmosis membrane module, connecting pipe, automatic water inlet pipe and automatic water outlet pipe, wastewater can enter the interior of the ultrafiltration membrane module through the automatic water inlet pipe, then enter the interior of the RO reverse osmosis membrane module through the connecting pipe, and finally be discharged through the automatic water outlet pipe, so that the dual-membrane filtration treatment of wastewater can be automatically completed, enabling the produced water to be recycled and being easy to implement.

[0015] 2. For the dual-membrane wastewater treatment device based on full-automatic ultrafiltration + RO reverse osmosis, through the provided automatic cleaning water pipe and drain pipe, cleaning water can be respectively discharged into the interior of the ultrafiltration membrane module and the RO reverse osmosis membrane module through the automatic cleaning water pipe and enter in a reverse manner, so that the ultrafiltration membrane module and the RO reverse osmosis membrane module can be backwashed, removing impurities inside the ultrafiltration membrane module and the RO reverse osmosis membrane module, and improving the quality of wastewater treatment.

[0016] The parts not involved in this device are the same as the prior art or can be implemented using the prior art. The present utility model is based on a dual-membrane wastewater treatment of full-automatic ultrafiltration + RO reverse osmosis, and is equipped with a backwashing mechanism, so that the impurities inside the ultrafiltration membrane module and the RO reverse osmosis membrane module are treated, improving the quality of wastewater treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. is a schematic structural diagram of a dual-membrane wastewater treatment device based on full-automatic ultrafiltration + RO reverse osmosis proposed by the present utility model;

[0018] Figure 2 is Figure 1 a schematic structural diagram of the ultrafiltration membrane module in FIG.

[0019] In the figure: 1. Ultrafiltration membrane module; 2. RO reverse osmosis membrane module; 3. Connecting pipe; 4. Automatic water inlet pipe; 5. Automatic water outlet pipe; 6. First solenoid valve; 7. Second solenoid valve; 8. Third solenoid valve; 9. Automatic cleaning water pipe; 10. Drain pipe; 11. Pipe cover; 12. Rotary pipe joint. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0021] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0022] Embodiment 1

[0023] Refer to Figure 1, A dual-membrane wastewater treatment device based on fully automatic ultrafiltration + RO reverse osmosis, including an ultrafiltration membrane module 1 and an RO reverse osmosis membrane module 2. The ultrafiltration membrane module 1 and the RO reverse osmosis membrane module 2 are connected by a connecting pipe 3. At the ends of the ultrafiltration membrane module 1 and the RO reverse osmosis membrane module 2 away from the connecting pipe 3, an automatic water inlet pipe 4 and an automatic water outlet pipe 5 are respectively fixed. Wastewater can enter the interior of the ultrafiltration membrane module 1 through the automatic water inlet pipe 4, then enter the interior of the RO reverse osmosis membrane module 2 through the connecting pipe 3, and finally be discharged through the automatic water outlet pipe 5. Thus, it can automatically complete the dual-membrane filtration treatment of wastewater, making the produced water recyclable and easy to implement. A first solenoid valve 6 is arranged on the pipe wall of the automatic water inlet pipe 4, a second solenoid valve 7 is arranged on the pipe wall of the connecting pipe 3, and a third solenoid valve 8 is arranged on the pipe wall of the automatic water outlet pipe 5. The first solenoid valve 6, the second solenoid valve 7, and the third solenoid valve 8 are all electrically connected to an external PLC controller. An automatic cleaning water pipe 9 is fixedly arranged between the pipe wall of the connecting pipe 3 and the pipe wall of the automatic water outlet pipe 5. One end of the automatic cleaning water pipe 9 is located between the ultrafiltration membrane module 1 and the second solenoid valve 7, and the other end of the automatic cleaning water pipe 9 is located between the RO reverse osmosis membrane module 2 and the third solenoid valve 8. Drain pipes 10 are arranged on the pipe walls of both the connecting pipe 3 and the automatic water inlet pipe 4. When it is necessary to perform reverse flushing on the ultrafiltration membrane module 1 and the RO reverse osmosis membrane module 2, the first solenoid valve 6, the second solenoid valve 7, and the second solenoid valve 8 on the PLC controller pipe wall are controlled, and then cleaning water is introduced through the automatic cleaning water pipe 9. The cleaning water can be respectively discharged into the interiors of the ultrafiltration membrane module 1 and the RO reverse osmosis membrane module 2 and enter in a reverse manner. Thus, the ultrafiltration membrane module 1 and the RO reverse osmosis membrane module 2 can be reversely flushed, and the impurities inside the ultrafiltration membrane module 1 and the RO reverse osmosis membrane module 2 are washed out. The flushed impurities are discharged through the drain pipes 10, improving the quality of wastewater treatment by the ultrafiltration membrane module 1 and the RO reverse osmosis membrane module 2.

[0024] Example 2

[0025] Refer to Figure 1 , The automatic water inlet pipe 4, the automatic water outlet pipe 5, and the automatic cleaning water pipe 9 all adopt three-way pipes. Pipe caps 11 are arranged at the ends of the automatic cleaning water pipe 9 and the ends of the drain pipes 10. The automatic cleaning water pipe 9 and the drain pipes 10 can be blocked through the pipe caps 11.

[0026] Example 3

[0027] Refer to Figure 1-2 , Swivel pipe joints 12 are arranged at both ends of the ultrafiltration membrane module 1 and both ends of the RO reverse osmosis membrane module 2. Through the swivel pipe joints 12, the ultrafiltration membrane module 1 and the RO reverse osmosis membrane module 2 can be rotated and disassembled, facilitating the disassembly and replacement of the ultrafiltration membrane module 1 and the RO reverse osmosis membrane module 2 for use.

[0028] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A double-membrane wastewater treatment device based on fully automatic ultrafiltration + RO reverse osmosis, comprising an ultrafiltration membrane group (1) and a RO reverse osmosis membrane group (2), characterized in that: The ultrafiltration membrane group (1) and the RO reverse osmosis membrane group (2) are connected via a connecting pipe (3); an automatic water inlet pipe (4) and an automatic water outlet pipe (5) are respectively fixedly provided at one end of the ultrafiltration membrane group (1) and the RO reverse osmosis membrane group (2) away from the connecting pipe (3); The pipe wall of the automatic water inlet pipe (4) is provided with a first solenoid valve (6), the pipe wall of the connecting pipe (3) is provided with a second solenoid valve (7), the pipe wall of the automatic water outlet pipe (5) is provided with a third solenoid valve (8), an automatic cleaning water pipe (9) is fixedly provided between the pipe wall of the connecting pipe (3) and the pipe wall of the automatic water outlet pipe (5), and a sewage pipe (10) is provided on the pipe wall of the connecting pipe (3) and the pipe wall of the automatic water inlet pipe (4).

2. A double-membrane wastewater treatment device based on fully automatic ultrafiltration + RO reverse osmosis according to claim 1, characterized in that: The automatic water inlet pipe (4), the automatic water outlet pipe (5) and the automatic cleaning water pipe (9) are all three-way pipes.

3. A double-membrane wastewater treatment device based on fully automatic ultrafiltration + RO reverse osmosis according to claim 1, characterized in that: The ends of the automatic cleaning water pipe (9) and the ends of the sewage pipe (10) are both provided with pipe covers (11).

4. A double-membrane wastewater treatment device based on fully automatic ultrafiltration + RO reverse osmosis according to claim 1, characterized in that: One end of the automatic cleaning water pipe (9) is located between the ultrafiltration membrane group (1) and the second electromagnetic valve (7), and the other end of the automatic cleaning water pipe (9) is located between the RO reverse osmosis membrane group (2) and the third electromagnetic valve (8).

5. A double-membrane wastewater treatment device based on fully automatic ultrafiltration + RO reverse osmosis according to claim 1, characterized in that: Both ends of the ultrafiltration membrane group (1) and both ends of the RO reverse osmosis membrane group (2) are provided with rotating pipe joints (12).

6. A double-membrane wastewater treatment device based on fully automatic ultrafiltration + RO reverse osmosis according to claim 1, characterized in that: The first solenoid valve (6), the second solenoid valve (7) and the third solenoid valve (8) are all electrically connected to an external PLC controller.

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