CN204325046U - Ultra-pure-water treatment system - Google Patents

Abstract

The utility model provides a kind of ultra-pure-water treatment system, comprise reverse osmosis unit, EDI device, EDI water tank and u-shaped pipe, the water-in of described reverse osmosis unit is connected by pipeline with former water end (W.E.), the water outlet of described reverse osmosis unit is connected by pipeline with the water-in of EDI device, the water outlet of described EDI device is connected by pipeline with the water-in of EDI water tank, one end of described u-shaped pipe is communicated in EDI water tank through EDI water tank upper, described u-shaped pipe is connected with the first valve in turn by pipeline and adds alkali mouth.Owing to have employed technique scheme, the utility model has advantage rational in infrastructure, it can prevent the ultrapure water in EDI water tank and the carbon dioxide exposure in air, prevents EDI water tank by the carbon dioxide pollution in air, ensures the quality of ultrapure water in EDI water tank.

Description

Ultrapure Water Treatment System

technical field

The utility model belongs to the technical field of water treatment, in particular to an ultrapure water treatment system with an EDI alkali-sealed water tank.

Background technique

In the field of water treatment technology, two-stage reverse osmosis devices and EDI devices are generally used in ultra-pure water treatment equipment. The water from pretreatment is treated by two-stage reverse osmosis devices, and the reverse osmosis water is processed by EDI devices to obtain ultra-pure water. . The water in the EDI water tank will drop due to poor sealing, carbon dioxide in the air will enter the EDI water tank, and the water quality will drop, that is, its resistivity will drop rapidly. Practice has proved that the water quality of ultrapure water above 18MΩ.cm will drop to 10-15MΩ.cm, it will drop to about 2MΩ.cm after 3 minutes. Therefore, it is necessary to reduce the chance of ultrapure water in contact with air, especially to prevent ultrapure water containers from being polluted by carbon dioxide in the air.

Utility model content

The purpose of this utility model is to provide an ultrapure water treatment system with reasonable structure, which can prevent the ultrapure water in the EDI water tank from contacting with carbon dioxide in the air, prevent the EDI water tank from being polluted by carbon dioxide in the air, and ensure the ultrapure water in the EDI water tank water quality.

The purpose of this utility model is achieved by such a technical scheme, which includes a reverse osmosis device, an EDI device, an EDI water tank and a u-shaped pipe, the water inlet of the reverse osmosis device is connected with the raw water end through a pipeline, and the reverse osmosis device The water outlet of the EDI device is connected with the water inlet of the EDI device through a pipeline, and the water outlet of the EDI device is connected with the water inlet of the EDI water tank through a pipeline. One end of the u-shaped pipe passes through the upper part of the EDI water tank and communicates with the EDI water tank. The u-shaped pipe is sequentially connected with the first valve and the alkali adding port through the pipeline.

The raw water at the raw water end enters the reverse osmosis device through the water inlet of the reverse osmosis device, and the reverse osmosis device is provided with a reverse osmosis membrane. Reverse osmosis membranes can effectively remove dissolved salts in raw water to obtain pure water. Pure water enters the EDI device through the water outlet of the reverse osmosis device. The EDI device can perform deep purification of pure water to obtain ultrapure water. The ultrapure water enters the EDI water tank through the water outlet of the EDI device for storage.

Add the lye into the lye inlet, the lye enters the u-shaped pipe through the first valve, and the lye seals the EDI water tank to prevent air from entering the EDI water tank through the u-shaped pipe, especially to effectively isolate carbon dioxide, Prevent ultrapure water from being polluted by air and ensure the quality of ultrapure water. When the water end needs to use ultra-pure water, open the water outlet of the EDI water tank and the first valve, as the ultra-pure water flows through the water outlet of the EDI water tank to the water end, the liquid level in the EDI water tank will drop, and will be on the upper part of the EDI water tank A negative pressure is formed. Since the U-shaped tube passes through the upper part of the EDI water tank and is connected to the EDI water tank, the liquid alkali in the U-shaped tube can form a potential difference to eliminate the negative pressure. The carbon dioxide gas in the outside air reacts with the lye in the U-shaped tube. Through the reaction, carbon dioxide in the air is removed to prevent carbon dioxide from polluting ultrapure water. Specifically, the lye can be a sodium hydroxide solution, which reacts with carbon dioxide in the air to generate sodium carbonate to remove the carbon dioxide in the air.

Further, the u-shaped pipe is connected to the EDI water tank through a clamp.

Further, the clip is a stainless steel quick-install clip.

Further, the bottom of the u-shaped pipe is connected to a second valve and a sewage outlet in sequence through a pipeline.

Further, the pipeline between the reverse osmosis device and the EDI device is sequentially provided with a pure water tank and a third valve.

Further, the EDI water tank is a stainless steel fully sealed water tank.

Due to the above-mentioned technical scheme, the utility model has the advantages of reasonable structure, which can prevent the ultrapure water in the EDI water tank from contacting with carbon dioxide in the air, prevent the EDI water tank from being polluted by carbon dioxide in the air, and ensure the ultrapure water in the EDI water tank. quality.

Description of drawings

Fig. 1 is the structural representation of the utility model.

In the figure: 1. Reverse osmosis device; 2. Pure water tank; 3. EDI device; 4. EDI water tank; 5. U-shaped pipe; 6. Clamp; A valve; 10, the second valve; 11, the third valve.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific illustrations.

As shown in Figure 1, the utility model comprises reverse osmosis device 1, EDI device 3, EDI water tank 4 and u-shaped pipe 5, and the water inlet of described reverse osmosis device 1 is connected with raw water end by pipeline, and described reverse osmosis device 1 The water outlet and the water inlet of EDI device 3 are connected by pipeline, and the water outlet of described EDI device 3 is connected by pipeline with the water inlet of EDI water tank 4, and one end of described u-shaped pipe 5 passes through EDI water tank 4 tops and communicates to EDI In the water tank 4, the u-shaped pipe 5 is sequentially connected with a first valve 9 and an alkali adding port 7 through pipelines.

The raw water at the raw water end enters the reverse osmosis device 1 through the water inlet of the reverse osmosis device 1 , and the reverse osmosis device 1 is provided with a reverse osmosis membrane. Reverse osmosis membranes can effectively remove dissolved salts in raw water to obtain pure water. The pure water enters the EDI device 3 through the water outlet of the reverse osmosis device 1 . The EDI device 3 can deeply purify the pure water to obtain ultrapure water. The ultrapure water enters the EDI water tank 4 through the water outlet of the EDI device 3 for storage.

The lye is added into the alkali-adding port 7, and the lye enters the u-shaped pipe 5 through the first valve 9, and the lye is sealed to the EDI water tank 4 to prevent air from entering the EDI water tank 4 through the u-shaped pipe 5, In particular, it can effectively isolate carbon dioxide, prevent ultrapure water from being polluted by air, and ensure the quality of ultrapure water. When the water end needs to use ultrapure water, open the water outlet of the EDI water tank 4 and the first valve, 9 along with the ultrapure water flows to the water end by the water outlet of the EDI water tank 4, the liquid level in the EDI water tank 4 drops, will be in The upper part of the EDI water tank forms a negative pressure. Since the u-shaped tube passes through the upper part of the EDI water tank and connects to the EDI water tank, the liquid alkali in the u-shaped tube can form a potential difference to eliminate the negative pressure. The carbon dioxide gas in the outside air and the u-shaped tube 5 The lye reacts. Through the reaction, carbon dioxide in the air is removed to prevent carbon dioxide from polluting ultrapure water. Specifically, the lye can be a sodium hydroxide solution, which reacts with carbon dioxide in the air to generate sodium carbonate to remove the carbon dioxide in the air.

As shown in FIG. 1 , as a specific embodiment, the u-shaped pipe 5 is connected to the EDI water tank 4 through a clamp 6 . The method of connecting by the clamp 6 makes the operation simple, the connection only takes a few minutes, saves man-hours, has good stability, and is convenient for maintenance. When the u-shaped pipe 5 needs to be repaired or replaced, only need to unclamp the two clips 6 to replace and rotate arbitrarily, which reduces maintenance time and maintenance costs.

As shown in FIG. 1 , as a specific embodiment, the clip 6 is a stainless steel quick-fit clip 6 . The stainless steel fast loading clip 6 is firm and durable, making the structure of the present utility model firmer.

As shown in FIG. 1 , as a specific embodiment, the bottom of the u-shaped pipe 5 is sequentially connected with a second valve 10 and a sewage outlet 8 through pipelines. The lye is added into the alkali-adding port 7, and the lye enters the u-shaped pipe 5 through the first valve 9, and the lye is sealed to the EDI water tank 4 to prevent air from entering the EDI water tank 4 through the u-shaped pipe 5, In particular, it can effectively isolate carbon dioxide, prevent ultrapure water from being polluted by air, and ensure the quality of ultrapure water. When the water end needs to use ultrapure water, open the water outlet of the EDI water tank 4 and the first valve, 9 along with the ultrapure water flows to the water end by the water outlet of the EDI water tank 4, the liquid level in the EDI water tank 4 drops, will be in The upper part of the EDI water tank forms a negative pressure. Since the u-shaped tube passes through the upper part of the EDI water tank and connects to the EDI water tank, the liquid alkali in the u-shaped tube can form a potential difference to eliminate the negative pressure. The carbon dioxide gas in the outside air and the u-shaped tube 5 The lye reacts.

After the reaction, new impurities will be generated in the u-shaped tube 5 . After the ultrapure water in the EDI water tank 4 is discharged through the water outlet of the EDI water tank 4, the second valve 10 and the sewage outlet 8 are opened to discharge the generated impurities.

As shown in FIG. 1 , as a specific embodiment, a pure water tank 2 and a third valve 11 are sequentially arranged on the pipeline between the reverse osmosis device 1 and the EDI device 3 . In industrial applications, not only ultrapure water is required, but pure water is also in great demand. The pure water tank 2 arranged on the pipeline between the reverse osmosis device 1 and the EDI device 3 can be stored in the pure water tank 2 for industrial application.

The raw water at the raw water end enters the reverse osmosis device 1 through the water inlet of the reverse osmosis device 1 , and the reverse osmosis device 1 is provided with a reverse osmosis membrane. Reverse osmosis membranes can effectively remove dissolved salts in raw water to obtain pure water. Pure water enters in the pure water tank 2 through the water outlet of reverse osmosis device 1, so that industrial application.

As shown in Figure 1, as a specific embodiment, the EDI water tank is a stainless steel fully sealed water tank.

The above are only embodiments of the present utility model, and are not intended to limit the scope of patents of the present utility model. All equivalent structures made using the description of the utility model and the contents of the accompanying drawings are directly or indirectly used in other related technical fields, all in the same way Within the scope of patent protection of the utility model.

Claims (6)

1. ultra-pure-water treatment system, it is characterized in that, comprise reverse osmosis unit, EDI device, EDI water tank and u-shaped pipe, the water-in of described reverse osmosis unit is connected by pipeline with former water end (W.E.), the water outlet of described reverse osmosis unit is connected by pipeline with the water-in of EDI device, the water outlet of described EDI device is connected by pipeline with the water-in of EDI water tank, one end of described u-shaped pipe is communicated in EDI water tank through EDI water tank upper, described u-shaped pipe is connected with the first valve in turn by pipeline and adds alkali mouth.

2. ultra-pure-water treatment system as claimed in claim 1, is characterized in that, pass through clamp connection between described u-shaped pipe and EDI water tank.

3. ultra-pure-water treatment system as claimed in claim 2, it is characterized in that, described clip is stainless steel Quick hoop.

4. ultra-pure-water treatment system as claimed in claim 1, is characterized in that, be connected with the second valve and sewage draining exit in turn bottom described u-shaped pipe by pipeline.

5. ultra-pure-water treatment system as claimed in claim 1, is characterized in that, the pipeline between described reverse osmosis unit and EDI device is disposed with pure water tank and the 3rd valve.

6. the ultra-pure-water treatment system according to any one of claim 1-5, is characterized in that, described EDI water tank is stainless steel Totally-enclosed water tank.