Multistage concentration equipment for concentrated water reverse osmosis concentrated water treatment

Abstract

The utility model discloses multi-stage concentration equipment for concentrated water reverse osmosis concentrated water treatment, which comprises a treatment box, a water inlet component communicated with an inner cavity of the treatment box and a sewage discharge component communicated with the bottom of the inner cavity of the treatment box are arranged at the bottom of the treatment box, and a multi-stage concentration component is arranged in the treatment box. The multi-stage concentration assembly comprises a plurality of reverse osmosis membrane groups mounted in the treatment box from bottom to top, and a backflow assembly is arranged at the position, close to the reverse osmosis membrane groups, in the treatment box. According to the multi-stage concentration equipment for concentrated water reverse osmosis concentrated water treatment, concentrated water is controlled to flow in the treatment box in a manner of flowing from bottom to top, so that pollutants are gathered below the reverse osmosis membrane group, the pollutants are conveniently gathered and settled through gravity, meanwhile, the cleaning assembly is arranged in the concentration equipment and is used for further deep cleaning of the reverse osmosis membrane group, and the concentration efficiency is improved. The cleaned water flows back to the bottom of the treatment box to be concentrated and filtered again, so that concentrated water is concentrated conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to water treatment device technical field, concretely is a kind of multistage concentration equipment for concentrated water reverse osmosis concentrated water treatment. BACKGROUND

[0002] Concentrated water usually refers to wastewater, sewage and waste liquid generated in industrial production, which contains industrial production materials, intermediate products and products lost with water and pollutants generated in the production process. In order to facilitate the discharge and treatment, recycling and other of concentrated water, it is usually necessary to concentrate the concentrated water, among which membrane separation concentration as a concentrated water concentration method usually separates water from liquid by using reverse osmosis, ultrafiltration or nanofiltration and other membrane separation technologies, so as to realize concentrated water concentration. At present, in the process of concentrating concentrated water by reverse osmosis membrane, due to the high salt content, organic matter content and water quality hardness in concentrated water, pollutants are easily accumulated on the surface of reverse osmosis membrane, causing blockage, affecting the concentration efficiency of concentrated water, and resulting in the deficiency of concentration equipment in use. SUMMARY

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a multistage concentration equipment for concentrated water reverse osmosis concentrated water treatment. The concentrated water flows in the treatment tank from bottom to top, the pollutants are accumulated below the reverse osmosis membrane group, and the pollutants are settled by gravity. At the same time, the cleaning assembly is provided in the concentration device for further deep cleaning of the reverse osmosis membrane group. The water after cleaning is returned to the bottom of the treatment tank for re-concentration and filtration, which facilitates the concentration and treatment of concentrated water and effectively solves the problems in the background art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a multistage concentration equipment for concentrated water reverse osmosis concentrated water treatment, comprising a treatment tank, a water inlet assembly communicating with the inner cavity of the treatment tank is arranged at the bottom of the treatment tank, and a blowdown assembly communicating with the bottom of the inner cavity of the treatment tank is arranged at the bottom of the treatment tank. A multistage concentration assembly is arranged in the treatment tank, the multistage concentration assembly comprises a plurality of reverse osmosis membrane groups installed in the treatment tank from bottom to top, a reflux assembly is arranged near the reverse osmosis membrane group in the treatment tank, a drain pipe communicating with the inner cavity of the treatment tank is installed at the top of the treatment tank, and a cleaning assembly is arranged near the reverse osmosis membrane group in the treatment tank, and the cleaning assembly communicates with the inner cavity of the drain pipe.

[0005] As a preferred technical scheme of the utility model, the cleaning assembly comprises a water spraying tank installed in the treatment tank, the water spraying tank is located below the reverse osmosis membrane group, and a water spraying hole facing the reverse osmosis membrane group is formed in the side surface of the water spraying tank, a shunt pipe communicating with the inner cavity of the drain pipe is installed on the side surface of the drain pipe, and a communication pipe communicating with the inner cavity of the water spraying tank is installed on the side surface of the shunt pipe.

[0006] As a preferred technical scheme of the utility model, the processing box side is provided with a water pump, the water pump water pumping end communicates with the drainage pipe inner cavity, the water pump drainage end communicates with the shunt pipe inner cavity, and the communication pipe is provided with a second valve.

[0007] As a preferred technical scheme of the utility model, the backflow component includes a backflow pipe, one end of the backflow pipe is fixed on the processing box side and communicates with the processing box inner cavity bottom, a water outlet pipe is installed at the position close to the reverse osmosis membrane group on the backflow pipe side, the water outlet pipe communicates with the processing box inner cavity, and a third valve is installed on the water outlet pipe.

[0008] As a preferred technical scheme of the utility model, the water inlet component includes a water inlet pipe installed on the processing box side and communicating with the processing box inner cavity, and the water inlet pipe is located below the multi-stage concentration component, the blowdown component includes a blowdown pipe installed on the processing box side and communicating with the processing box inner cavity bottom, and a first valve is installed on the water inlet pipe and the blowdown pipe.

[0009] As a preferred technical scheme of the utility model, a filter screen is installed in the processing box, and the filter screen is located between the multi-stage concentration component and the water inlet pipe.

[0010] Compared with the prior art, the utility model has the beneficial effects that:

[0011] The multi-stage concentration equipment for concentrated water reverse osmosis concentrated water treatment of the utility model controls the concentrated water to flow in the processing box in the mode of flowing from bottom to top, makes the pollutants gather below the reverse osmosis membrane group, is convenient for the pollutants to gather and settle through gravity, meanwhile, the cleaning component is arranged in the concentration device, is used for further depth cleaning of the reverse osmosis membrane group, and the cleaned water flows back to the processing box bottom and is concentrated and filtered again, and the concentrated water treatment is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the structure schematic view of the utility model;

[0013] Figure 2 It is another angle structure schematic view of the utility model;

[0014] Figure 3 It is the sectional structure schematic view of the utility model;

[0015] Figure 4 It is Figure 3 It is the enlarged structure schematic view of A in the utility model

[0016] Figure 5 It is the structure schematic view of the filter screen in the utility model.

[0017] In the figure: 1 processing box, 2 water inlet pipe, 3 drain pipe, 4 first valve, 5 reverse osmosis membrane group, 6 drain pipe, 7 shunt pipe, 8 communication pipe, 9 second valve, 10 water spraying box, 11 water outlet pipe, 12 third valve, 13 backflow pipe, 14 filter screen, 15 water pump. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0019] Please refer to Figures 1-5 The utility model provides a kind of technical scheme: a kind of multi-stage concentration equipment for concentrated water reverse osmosis concentrated water treatment, including processing box 1, the bottom of processing box 1 is provided with the water inlet assembly being communicated with its inner cavity and the drain assembly being communicated with the bottom of its inner cavity, water inlet assembly includes the water inlet pipe 2 being installed in the side of processing box 1 and being communicated with the inner cavity of processing box 1, external concentrated water is injected into processing box 1 for concentration treatment by water inlet pipe 2, drain assembly includes the drain pipe 3 being installed in the side of processing box 1 and being communicated with the bottom of the inner cavity of processing box 1, when processing box 1 is concentrated to concentrated water, salt, organic matter, calcium ion, magnesium ion etc. in concentrated water are concentrated in the bottom of the inner cavity of processing box 1, and concentrated pollutants can be discharged from the inner cavity of processing box 1 by drain pipe 3, first valve 4 is installed on water inlet pipe 2 and drain pipe 3, and the first valve 4 on water inlet pipe 2 is convenient for adjusting the water inflow in water inlet pipe 2, and the first valve 4 on drain pipe 3 is convenient for opening drain pipe 3 to discharge concentrated water in processing box 1 after concentration, and it is convenient to use water inlet pipe 2 and drain pipe 3 according to demand.

[0020] Multi-stage concentration assembly is arranged in processing box 1, and the multi-stage concentration assembly includes multiple reverse osmosis membrane groups 5 installed in processing box 1 from bottom to top, the types of reverse osmosis membrane groups 5 include but are not limited to polyamide, polyether sulfone, polyethylene and other materials, as concentrated water flows into processing box 1, the liquid level of concentrated water in processing box 1 gradually rises, when concentrated water rises and flows through reverse osmosis membrane groups 5, reverse osmosis membrane groups 5 filter and concentrate pollutants in concentrated water, and multiple reverse osmosis membrane groups 5 are arranged from bottom to top, to improve the concentration and filtration quality, facilitate the concentration treatment of concentrated water, backflow assembly is arranged in processing box 1 close to the position of reverse osmosis membrane groups 5, and concentrated water after concentration of each stage of reverse osmosis membrane groups 5 is backflowed to the bottom of the inner cavity of processing box 1 through backflow assembly, to facilitate discharging it through drain pipe 3 at the bottom of processing box 1.

[0021] The treatment box 1 is provided with a drain pipe 6 communicated with the inner cavity of the treatment box 1, and the concentrated water is discharged through the drain pipe 6 after being concentrated by the multi-stage concentration assembly. The treatment box 1 is provided with a cleaning assembly near the position of the reverse osmosis membrane group 5, and the cleaning assembly is communicated with the inner cavity of the drain pipe 6. When the water flow is discharged outward through the drain pipe 6, a part of the water flow can be controlled to enter the cleaning assembly, and the water flow sprayed through the cleaning assembly can be used for cleaning the surface of the reverse osmosis membrane group 5 to avoid the blockage caused by the aggregation of pollutants.

[0022] The cleaning assembly comprises a water spraying box 10 installed on the treatment box 1, and the water spraying box 10 is located below the reverse osmosis membrane group 5. The water spraying box 10 is provided with a water spraying hole facing the reverse osmosis membrane group 5 on the side surface. The drain pipe 6 is provided with a shunt pipe 7 communicated with the inner cavity of the drain pipe 6 on the side surface. The shunt pipe 7 is provided with a communication pipe 8 communicated with the inner cavity of the water spraying box 10 on the side surface. When the water flow flows out through the shunt pipe 7, a part of the water flow is controlled to enter the shunt pipe 7. The water flow in the shunt pipe 7 enters the water spraying box 10 through the communication pipe 8 and is sprayed out through the water spraying hole on the side surface of the water spraying box 10. The sprayed water flow is used for cleaning the pollutants on the surface of the reverse osmosis membrane group 5. After the water flow is cleaned on the reverse osmosis membrane group 5, the water flow can be returned to the bottom of the inner cavity of the treatment box 1 through the return assembly for re-concentration and filtration, which facilitates the use of the concentration device.

[0023] The treatment box 1 is provided with a water pump 15, and the water suction end of the water pump 15 is communicated with the inner cavity of the drain pipe 6. The water discharge end of the water pump 15 is communicated with the inner cavity of the shunt pipe 7. The water pump 15 can control the water flow in the drain pipe 6 to enter the shunt pipe 7, and the water pump 15 can also play a role in pressurization to ensure the intensity of the water flow sprayed out through the water spraying hole on the side surface of the water spraying box 10, which facilitates the cleaning of the pollutants aggregated on the surface of the reverse osmosis membrane group 5. The communication pipe 8 is provided with a second valve 9, and the second valve 9 is used for controlling the water flow in the communication pipe 8. When the reverse osmosis membrane group 5 at a certain position needs to be cleaned, the second valve 9 corresponding to the communication pipe 8 is opened. When the reverse osmosis membrane group 5 does not need to be cleaned, the second valve 9 is closed, so that the concentrated and filtered water flow is discharged through the drain pipe 6.

[0024] The return assembly comprises a return pipe 13, one end of the return pipe 13 is fixed on the side surface of the treatment box 1 and is communicated with the bottom of the inner cavity of the treatment box 1. The return pipe 13 is provided with a water outlet pipe 11 near the position of the reverse osmosis membrane group 5 on the side surface, and the water outlet pipe 11 is communicated with the inner cavity of the treatment box 1. The water outlet pipe 11 is provided with a third valve 12. When the reverse osmosis membrane group 5 is filtered for a certain time or needs to be cleaned, the third valve 12 is opened, so that the concentrated water of the reverse osmosis membrane group 5 enters the water outlet pipe 11. The concentrated water in the water outlet pipe 11 is returned to the bottom of the inner cavity of the treatment box 1 through the return pipe 13, which facilitates the concentration and settlement of the pollutants at the bottom of the treatment box 1.

[0025] The filter screen 14 is arranged in the treatment box 1 and is located between the multi-stage concentration assembly and the water inlet pipe 2, and is used for filtering the concentrated water in the treatment box 1, reducing the aggregation of pollutants on the surface of the multi-stage concentration assembly, and when the filter screen 14 filters the concentrated water, the pollutants are aggregated below the filter screen 14, and when the concentrated concentrated water is discharged through the blowdown pipe 3, the water level in the treatment box 1 is lowered, and when the water in the upper part of the treatment box 1 flows downward, the aggregation of pollutants outside the filter screen 14 can be assisted to fall off, so that the filter screen 14 is used conveniently.

[0026] The water pump 15 used in the utility model is a common electronic element in the prior art, and the working mode and circuit structure thereof are all known technologies, the water pump 15 is controlled to work through a switch or a PLC controller, and this mode is a common technical solution for technicians, and will not be repeated here. Preferably, the first valve 4, the second valve 9 and the third valve 12 all adopt electromagnetic valves and are controlled to work by a PLC controller.

[0027] The concentration equipment controls the concentrated water to flow in the treatment box in a downward flowing mode, aggregates the pollutants below the reverse osmosis membrane group, and facilitates the aggregation of the pollutants to be settled by gravity, and the concentration equipment is provided with a cleaning assembly for further deep cleaning of the reverse osmosis membrane group, and the cleaned water flows back to the bottom of the treatment box to be concentrated and filtered again, so that the concentrated water is concentrated and treated.

[0028] The non-disclosed parts in the utility model are all prior art, and the specific structure, material and working principle will not be described in detail. Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-stage concentration apparatus for treating concentrated water from reverse osmosis of concentrated water, comprising a treatment tank (1), characterized in that: The bottom of the treatment box (1) is provided with a water inlet assembly communicating with the inner cavity thereof and a sewage discharge assembly communicating with the bottom of the inner cavity thereof, the treatment box (1) is provided with a multi-stage concentration assembly, the multi-stage concentration assembly comprises a plurality of groups of reverse osmosis membrane groups (5) installed in the treatment box (1) from bottom to top, the treatment box (1) is provided with a backflow assembly near the reverse osmosis membrane groups (5), the top of the treatment box (1) is provided with a drain pipe (6) communicating with the inner cavity thereof, the treatment box (1) is provided with a cleaning assembly near the reverse osmosis membrane groups (5), and the cleaning assembly communicates with the inner cavity of the drain pipe (6).

2. The multi-stage concentration apparatus for treating concentrated water of reverse osmosis concentrated water according to claim 1, characterized by: The cleaning assembly comprises a water spraying box (10) installed in the treatment box (1), the water spraying box (10) is located below the reverse osmosis membrane groups (5), and a water spraying hole is formed in the side of the water spraying box (10) and faces the reverse osmosis membrane groups (5), the side of the drain pipe (6) is provided with a shunt pipe (7) communicating with the inner cavity thereof, and the side of the shunt pipe (7) is provided with a communication pipe (8) communicating with the inner cavity of the water spraying box (10).

3. The multi-stage concentration apparatus for treating concentrated water of reverse osmosis concentrated water according to claim 2, characterized by: The side of the treatment box (1) is provided with a water pumping pump (15), the water pumping end of the water pumping pump (15) communicates with the inner cavity of the drain pipe (6), and the water discharging end of the water pumping pump (15) communicates with the inner cavity of the shunt pipe (7), and the communication pipe (8) is provided with a second valve (9).

4. The multi-stage concentration apparatus for treating concentrated water of reverse osmosis concentrated water according to claim 1, characterized by: The backflow assembly comprises a backflow pipe (13), one end of the backflow pipe (13) is fixed to the side of the treatment box (1) and communicates with the inner cavity of the treatment box (1), a water outlet pipe (11) is installed on the side of the backflow pipe (13) near the reverse osmosis membrane groups (5), and the water outlet pipe (11) communicates with the inner cavity of the treatment box (1), and the water outlet pipe (11) is provided with a third valve (12).

5. The multi-stage concentration apparatus for treating concentrated water of reverse osmosis concentrated water according to claim 1, characterized by: The water inlet assembly comprises a water inlet pipe (2) installed on the side of the treatment box (1) and communicating with the inner cavity of the treatment box (1), and the water inlet pipe (2) is located below the multi-stage concentration assembly, the sewage discharge assembly comprises a sewage discharge pipe (3) installed on the side of the treatment box (1) and communicating with the bottom of the inner cavity of the treatment box (1), and the water inlet pipe (2) and the sewage discharge pipe (3) are provided with a first valve (4).

6. The multi-stage concentration apparatus for treating concentrated water of reverse osmosis concentrated water according to claim 5, characterized by: The treatment box (1) is provided with a filter screen (14) between the multi-stage concentration assembly and the water inlet pipe (2).

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