Ultraviolet sterilization device of membrane-method seawater desalination reverse osmosis system

Abstract

The utility model relates to the field of seawater desalination, and provides an ultraviolet sterilization device of a membrane seawater desalination reverse osmosis system, which comprises a water inlet pipe, a sterilization tank and a water outlet pipe, and the water inlet pipe and the water outlet pipe are both communicated with the sterilization tank; an ultraviolet sterilization lamp is arranged in the sterilization tank; a plurality of partition plates are arranged in the sterilization tank and divide the sterilization tank into a plurality of layers of sterilization spaces; a plurality of ultraviolet sterilization lamps are mounted in each layer of sterilization space; according to the utility model, the sterilization tank is arranged, and the medium-pressure ultraviolet sterilization lamp is arranged in the sterilization tank, so that the addition of medicaments is omitted, the capital is saved, microorganisms in water flow can be thoroughly killed in a multi-layer sterilization space, the reverse osmosis membrane is effectively protected, and the cleaning frequency and the replacement frequency of the reverse osmosis membrane are reduced.

Description

Technical Field

[0001] The utility model relates to the field of seawater desalination, in particular to an ultraviolet sterilization device of a membrane seawater desalination reverse osmosis system. Background Art

[0002] During current operation, non-oxidizing fungicides are added at irregular intervals according to the microbial content before the reverse osmosis membrane system enters the water. In summer, the dosage of the agent is relatively large, but the pressure difference of the reverse osmosis membrane and the cleaning frequency control are not very ideal. In addition, the cost of non-oxidizing fungicides is relatively high, with the annual cost of this agent being nearly one million yuan. The manual addition of the agent is relatively frequent, and it is impossible to achieve more precise quantitative control. Utility Model Content

[0003] The utility model provides an ultraviolet sterilization device for a membrane desalination reverse osmosis system. By setting a sterilization pool and a medium-pressure ultraviolet sterilization lamp in the sterilization pool, the addition of chemicals is omitted, money is saved, the microorganisms in the water flow can be completely killed in the multi-layer sterilization space, the reverse osmosis membrane is effectively protected, and the cleaning frequency and replacement frequency of the reverse osmosis membrane are reduced.

[0004] The technical solution of the utility model is achieved in this way:

[0005] An ultraviolet sterilization device for a membrane desalination reverse osmosis system comprises: a water inlet pipe, a sterilization tank and a water outlet pipe, wherein the water inlet pipe and the water outlet pipe are both connected to the sterilization tank;

[0006] An ultraviolet sterilization lamp is arranged in the sterilization pool;

[0007] A plurality of partitions are arranged in the sterilization pool, and the plurality of partitions divide the sterilization pool into multiple layers of sterilization space;

[0008] A plurality of ultraviolet sterilization lamps are installed in the sterilization space on each floor;

[0009] The inner end of the ultraviolet germicidal lamp is provided with a mounting hole, and the side wall of the sterilization pool is provided with a mounting block, and the ultraviolet germicidal lamp is installed on the sterilization pool through the cooperation between the mounting hole and the mounting block;

[0010] The outer end of the ultraviolet sterilization lamp is installed on the sterilization pool through a sealing member.

[0011] Furthermore, the multiple layers of sterilization spaces are connected end to end to form an S-shaped sterilization space.

[0012] Furthermore, the axes of the ultraviolet germicidal lamps in each layer are parallel to each other and located on the same horizontal plane.

[0013] Furthermore, the sterilization pool is provided with multiple layers of mounting holes, each layer is provided with a plurality of mounting holes, and one of the ultraviolet sterilization lamps is installed on each mounting hole.

[0014] Further, the water inlet pipe is located on the top wall of the sterilization tank;

[0015] The water outlet pipe is located at the bottom of the side wall of the sterilization pool.

[0016] Furthermore, the water inlet pipe includes a main water inlet pipe and a branch water inlet pipe, and a plurality of the branch water inlet pipes are provided, and the plurality of branch water inlet pipes are all connected to the main water inlet pipe;

[0017] The water outlet pipe is provided with one or more;

[0018] The sterilization pool is provided with a plurality of water inlets, the axes of the plurality of water inlets are located on the same horizontal plane, and one of the water inlets is provided with one branch water inlet pipe;

[0019] The sterilization pool is provided with one or more water outlets, the axes of the multiple water outlets are located on the same horizontal plane, and one water outlet pipe is installed on one water outlet.

[0020] Furthermore, a plurality of observation windows are arranged on the side wall of the sterilization pool, and one observation window corresponds to one layer of the sterilization space.

[0021] Furthermore, the ultraviolet germicidal lamp is a medium pressure ultraviolet germicidal lamp

[0022] The utility model provides a sterilization pool and a medium-pressure ultraviolet sterilization lamp in the sterilization pool, thereby eliminating the need for adding chemicals and saving money. It can completely kill microorganisms in the water flow in the multi-layer sterilization space, effectively protect the reverse osmosis membrane, and reduce the cleaning and replacement frequency of the reverse osmosis membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 It is a schematic diagram of the overall structure of an ultraviolet sterilization device of a membrane seawater desalination reverse osmosis system in a specific embodiment of the utility model;

[0025] Figure 2 for Figure 1 A structural cross-sectional view of an ultraviolet sterilization device of a membrane desalination reverse osmosis system is shown;

[0026] Figure 3 for Figure 1 , Figure 2 A structural corrosion diagram of an ultraviolet sterilization device of a membrane desalination reverse osmosis system is shown;

[0027] Figure 4 for Figure 3 A cross-sectional view of the structure of a UV sterilizer of a membrane desalination reverse osmosis system;

[0028] Explanation of the reference numerals: water inlet pipe 1; main water inlet pipe 11; branch water inlet pipe 12; sterilization pool 2; mounting hole 21; water outlet 23; water inlet 22; water outlet pipe 3; ultraviolet sterilization lamp 4; partition 5; sterilization space 6; observation window 7. DETAILED DESCRIPTION

[0029] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In the specific embodiment of the present invention, see Figure 1-Figure 4 , a UV sterilization device for a membrane desalination reverse osmosis system, comprising: an inlet pipe 1, a sterilization tank 2 and an outlet pipe 3, wherein the inlet pipe 1 and the outlet pipe 3 are both connected to the sterilization tank 2;

[0031] In the experiment, without adding non-oxidizing bactericide, the sterilization effect of medium-pressure ultraviolet rays on the reverse osmosis membrane influent and the improvement effect on the operating conditions of the reverse osmosis membrane system (pressure difference, flux, backwashing frequency) were observed at different positions of the system. The operating parameters of the security filter and the reverse osmosis membrane system were compared and observed, such as the change in the pressure difference of the security filter, the change in the transmembrane pressure difference, the change in the membrane flux attenuation, etc. The sterilization tank was set between the ultrafiltration water production tank and the reverse osmosis security filter to sterilize the seawater entering the reverse osmosis.

[0032] The sterilization pool 2 is provided with an ultraviolet sterilization lamp 4, which is used to sterilize seawater, protect the operation of the membrane system, and prevent biological fouling of the membrane system by instantaneous and continuous sterilization by ultraviolet rays. The ultraviolet sterilization lamp is a medium-pressure ultraviolet sterilization lamp, which can prevent microorganisms from reviving after extinguishing the fire, and has a wide range of applications;

[0033] A plurality of partitions 5 are arranged in the sterilization pool 2, and the plurality of partitions 5 divide the sterilization pool 2 into a multi-layer sterilization space 6, ensuring that the water flow in the space can be fully irradiated, so that all microorganisms in the water flow are inactivated, thereby improving the sterilization efficiency;

[0034] A plurality of ultraviolet sterilization lamps 4 are installed in each layer of the sterilization space 6;

[0035] The inner end of the ultraviolet germicidal lamp 4 is provided with a mounting head with a mounting hole 41, and a mounting block 42 is welded on the side wall of the sterilization pool. The ultraviolet germicidal lamp 4 is mounted on the sterilization pool 2 through the cooperation between the mounting hole 41 and the mounting block 42;

[0036] The outer end of the ultraviolet sterilization lamp 4 is mounted on the sterilization pool 2 through a sealing member 43 .

[0037] In the specific embodiment of the present invention, see Figure 1-Figure 4 The multi-layer sterilization space 6 is connected end to end to form an S-shaped sterilization space;

[0038] At this time, since there are multiple layers of sterilization space, the microorganisms in the water flowing into the sterilization pool will be sterilized layer by layer, and the sterilization is more comprehensive and thorough, ensuring that the microorganisms in the water flow are killed, effectively preventing biological fouling in the membrane system, thereby ensuring the normal operation of the membrane system.

[0039] In the specific embodiment of the present invention, see Figure 1-Figure 4 The axes of the ultraviolet sterilization lamps 4 in each layer are parallel to each other and located on the same horizontal plane, so as to fully sterilize the water flowing into the sterilization space of the corresponding layer.

[0040] In the specific embodiment of the present invention, see Figure 1-Figure 4 The sterilization pool 2 is provided with multiple layers of mounting holes 21, each layer is provided with a plurality of mounting holes, and each mounting hole 21 is provided with one of the ultraviolet sterilization lamps.

[0041] In the specific embodiment of the present invention, see Figure 1-Figure 4 , the water inlet pipe 1 is located on the top wall of the sterilization pool 2;

[0042] The water outlet pipe 3 is located at the bottom of the side wall of the sterilization pool 2 .

[0043] In the specific embodiment of the present invention, see Figure 1-Figure 4 The water inlet pipe 1 includes a main water inlet pipe 11 and a branch water inlet pipe 12. A plurality of branch water inlet pipes 12 are provided, and the plurality of branch water inlet pipes 12 are all connected to the main water inlet pipe 11. After the plurality of branch water inlet pipes 12 are provided, the water flow can flow evenly into the sterilization space at the top layer, thereby ensuring that the water flow can be fully irradiated and sterilized during the flow, thereby improving the sterilization effect;

[0044] The outlet pipe 3 is provided with one or more, the number of the outlet pipes 3 matches the number of the reverse osmosis tanks, and the diameter of the outlet pipe 3 also matches the flow rate of the reverse osmosis tanks;

[0045] The sterilizing pool 2 is provided with a plurality of water inlets 22, the axes of the plurality of water inlets 22 are located on the same horizontal plane, and one of the water inlets 22 is provided with one of the branch water inlet pipes 12;

[0046] The sterilization pool 2 is provided with one or more water outlets 23 , the axes of the multiple water outlets 3 are located on the same horizontal plane, and one water outlet pipe 3 is installed on one water outlet 23 .

[0047] In the specific embodiment of the present utility model, see Figure 1-Figure 4 , a plurality of observation windows 7 are provided on the side wall of the sterilization pool 2, and one observation window 7 corresponds to one layer of the sterilization space 6;

[0048] Regularly observe the scaling of the UV lamp so that it can be replaced in time or descaled accordingly.

[0049] In the specific embodiment of the present utility model, see Figure 1-Figure 4 Before the equipment is put into use, it will first enter the experimental stage; the test is carried out in three stages:

[0050] In the first stage, the equipment was kept running, and samples were collected before and after the sterilization pool, and the sampling information was marked and sent to a third-party agency to test the total number of microbial colony parameters;

[0051] In the second stage, the sterilization pool test is carried out. The sterilization pool is not turned on, and the SWRO inlet SDI is observed. The changes are observed and the inlet water is recorded. After obvious changes, it can be stopped. According to the water quality, the cycle is uncertain, and it is estimated to be 2 weeks. The sterilization pool is turned on, and the SWRO inlet SDI is observed. The changes are observed and the inlet water is recorded. After obtaining the two groups of test data of "without sterilization pool" and "with sterilization pool", a comparison is made to observe the impact of the sterilization pool on the operation of the membrane system;

[0052] In the third stage, further tests were conducted with and without a sterilization pool to observe changes in transmembrane pressure difference and membrane flux until the RO membrane needed to be chemically cleaned; after obtaining the two sets of test data of "without a sterilization pool" and "with a sterilization pool", a comparison was made to observe the impact of UV on the operation of the membrane system.

[0053] At the same time, according to testing, the total colony count of ultrafiltration water is currently between 100 CFU / ml and 800 CFU / ml, with a peak in summer;

[0054] Through the above process, the sterilization effect of medium-pressure ultraviolet light is confirmed, and the number, specifications and other parameters of the medium-pressure ultraviolet lamps are finally determined.

[0055] In the specific embodiment of the present invention, see Figure 1-Figure 4 When working, the water in the main water inlet pipe flows into the sterilization space of the top layer of the sterilization pool through multiple branch water inlet pipes, and then flows into the sterilization space of the lower layer in turn under the action of water pressure. Every time it enters a layer of sterilization space, the microorganisms in the water flow will be killed instantly and continuously, thereby ensuring more thorough sterilization.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A UV sterilization device for a membrane desalination reverse osmosis system, comprising: A water inlet pipe, a sterilizing pool and a water outlet pipe, wherein the water inlet pipe and the water outlet pipe are both connected to the sterilizing pool; The feature is that: an ultraviolet sterilization lamp is arranged in the sterilization pool; A plurality of partitions are arranged in the sterilization pool, and the plurality of partitions divide the sterilization pool into multiple layers of sterilization space; A plurality of ultraviolet sterilization lamps are installed in the sterilization space on each floor; The inner end of the ultraviolet germicidal lamp is provided with a mounting hole, and the side wall of the sterilization pool is provided with a mounting block, and the ultraviolet germicidal lamp is installed on the sterilization pool through the cooperation between the mounting hole and the mounting block; The outer end of the ultraviolet sterilization lamp is installed on the sterilization pool through a sealing member.

2. The ultraviolet sterilization device of a membrane desalination reverse osmosis system according to claim 1, characterized in that: The multiple layers of sterilization spaces are connected end to end to form an S-shaped sterilization space.

3. The ultraviolet sterilization device of a membrane desalination reverse osmosis system according to claim 1, characterized in that: The axes of the ultraviolet germicidal lamps in each layer are parallel to each other and located on the same horizontal plane.

4. The ultraviolet sterilization device of a membrane desalination reverse osmosis system according to claim 1, characterized in that: The sterilization pool is provided with multiple layers of mounting holes, each layer is provided with a plurality of mounting holes, and one of the ultraviolet sterilization lamps is installed on each mounting hole.

5. The ultraviolet sterilization device of a membrane desalination reverse osmosis system according to claim 1, characterized in that: The water inlet pipe is located on the top wall of the sterilization tank; The water outlet pipe is located at the bottom of the side wall of the sterilization pool.

6. The ultraviolet sterilization device of a membrane desalination reverse osmosis system according to claim 1, characterized in that: The water inlet pipe includes a main water inlet pipe and a branch water inlet pipe, and a plurality of the branch water inlet pipes are provided, and the plurality of branch water inlet pipes are all connected to the main water inlet pipe; The water outlet pipe is provided with one or more; The sterilization pool is provided with a plurality of water inlets, the axes of the plurality of water inlets are located on the same horizontal plane, and one of the water inlets is provided with one branch water inlet pipe; The sterilization pool is provided with one or more water outlets, the axes of the multiple water outlets are located on the same horizontal plane, and one water outlet pipe is installed on one water outlet.

7. The ultraviolet sterilization device of a membrane desalination reverse osmosis system according to claim 1, characterized in that: A plurality of observation windows are arranged on the side wall of the sterilization pool, and one observation window corresponds to one layer of the sterilization space.

8. The ultraviolet sterilization device of a membrane desalination reverse osmosis system according to claim 1, characterized in that: The ultraviolet germicidal lamp is a medium-pressure ultraviolet germicidal lamp.

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