Ion exchange resin device convenient to regenerate

Abstract

The utility model discloses an ion exchange resin device convenient to regenerate, which comprises a resin tank, a lower filter plate is hermetically arranged at the lower part of the resin tank, and a water collecting filter plate is hermetically arranged at the upper part of the resin tank; an overflow port and a pressure relief port are respectively formed in the top of the resin tank, and a water outlet and an air inlet are respectively formed in the bottom of the resin tank; a water inlet is formed in the upper part of the resin tank between the water collecting filter plate and the lower filter plate; and a regenerant inlet is formed in the side wall of the resin tank below the lower filter plate. The device has the advantages that the regenerant can be in full contact with resin all the time, so that the resin is fully regenerated, the utilization rate of the regenerant is increased, the consumption of the regenerant is reduced, the discharge amount and the discharge concentration of regenerated waste liquid are reduced, and the economic benefit is remarkable. The backwashing fan blows air into the resin tank to disturb the resin, so that the regeneration effect is improved, the resin can be loosened, the adsorption effect in the adsorption process is improved, and the effluent quality is improved.

Description

Technical field:

[0001] The utility model relates to a regeneration device, in particular to an ion exchange resin device which is convenient for regeneration. Background technology:

[0002] Ion exchange resins are widely used in wastewater treatment processes and high-concentration brine treatment processes. They are mainly used for water softening and desalination, and for producing softened water, pure water, and ultrapure water. In the water treatment industry, ion exchange is a reaction of equal charge molar amounts between ions in water and ions on ion exchange resins. After the resin has been used for a period of time, the adsorbed ions are close to saturation, and it is necessary to regenerate the resin. Chemical agents are used to remove the ions and other impurities adsorbed by the resin to restore its original composition and performance. At present, during the regeneration process, the regeneration agent enters from the wastewater inlet at the top of the equipment, passes through the distributor, and passes through the resin packing area from top to bottom. When the regeneration agent level in the equipment reaches full liquid, the overflow port at the top of the equipment overflows to the wastewater pool as regeneration waste liquid. The problem is that during the adsorption process, the resin located at the top first contacts with the wastewater to adsorb the salt impurities and organic impurities therein, resulting in the upper resin being in a deep failure state, while the lower resin is not yet in a failure state. In this way, after the regeneration agent first contacts the deeply failed resin at the top, the concentration of impurity ions in the regeneration agent increases. Even if it continues to flow downward and contact the resin at the bottom, the concentration of impurity ions in the regeneration agent is close to the concentration of ions adsorbed by the resin at the bottom, and the resin at the bottom cannot be effectively regenerated, resulting in poor regeneration effect. Moreover, the regeneration agent added later cannot effectively flow downward under the combination of the original regeneration agent, and cannot fully contact the resin at the bottom, so it overflows out of the equipment through the overflow port, and effective regeneration is not achieved. In order to regenerate the resin at the bottom, the regeneration time can only be extended, resulting in poor regeneration efficiency, and also increasing the amount of regeneration agent added, and a large amount of regeneration waste liquid. Utility model content:

[0003] In order to solve the above problems, the purpose of the utility model is to provide an ion exchange resin device that is easy to regenerate.

[0004] The utility model is implemented by the following technical solutions:

[0005] An ion exchange resin device for easy regeneration comprises a resin tank, a lower filter plate is sealed at the lower part of the resin tank, a water collecting filter plate is sealed at the upper part of the resin tank; an overflow port and a pressure relief port are respectively opened at the top of the resin tank, and a water outlet and an air inlet are respectively opened at the bottom of the resin tank; a water inlet is opened at the upper part of the resin tank between the water collecting filter plate and the lower filter plate; a filler resin is filled at the lower part of the space formed by the water collecting filter plate and the lower filter plate;

[0006] The overflow port is connected to the water inlet of the wastewater tank through a pipeline; the air inlet is connected to the air outlet of the backwash fan through a pipeline, and a one-way valve is provided at the air inlet;

[0007] The water outlet end of the water receiving filter plate extends to the outside of the resin tank and is connected to the water inlet of the wastewater tank through a pipeline; a liquid level sensor is provided on the inner wall of the resin tank between the water receiving filter plate and the lower filter plate;

[0008] A regeneration agent inlet is provided on the side wall of the resin tank below the lower filter plate, the regeneration agent inlet is connected to the outlet of the regeneration agent medicine box through a pipeline, and a dosing valve is provided at the outlet of the regeneration agent medicine box;

[0009] The signal output end of the liquid level sensor is signal-connected to the signal input end of the controller, and the signal output end of the controller is signal-connected to the signal input end of the dosing valve.

[0010] Furthermore, the water collecting filter plate is a flat structure with a hollow interior, and a plurality of filter holes connecting the two sides of the water collecting filter plate are evenly opened on the water collecting filter plate; a plurality of water collecting ports connected to the interior of the water collecting filter plate are opened on the top of the water collecting filter plate, one end of the water collecting pipe is connected to the interior of the water collecting filter plate, and the other end passes through the side wall of the resin tank and is placed outside the resin tank, and is connected to the water inlet of the wastewater tank.

[0011] Furthermore, a pH sensor is provided on the water receiving pipe, a signal output end of the pH sensor is signal-connected to a signal input end of a controller, and a signal output end of the controller is signal-connected to a signal input end of the backwash fan.

[0012] Furthermore, a manhole is provided on the side wall of the resin tank above the water collecting filter plate.

[0013] Furthermore, a viewing window is provided on the side wall of the resin tank between the water receiving filter plate and the lower filter plate.

[0014] Furthermore, a resin inlet and a resin outlet are respectively provided on the side wall of the resin tank between the water receiving filter plate and the lower filter plate.

[0015] Advantages of the utility model:

[0016] The utility model can make the regeneration agent always fully contact with the resin, so that the resin can be fully regenerated, improve the utilization rate of the regeneration agent, reduce the consumption of the regeneration agent, reduce the discharge amount and discharge concentration of the regeneration waste liquid, and have significant economic benefits. During the regeneration process, the device can blow air into the resin tank through the backwash fan to form a disturbance on the resin, further improving the regeneration effect, and after the disturbance, it can also loosen the resin, so that the wastewater can be more fully contacted with the resin during adsorption, thereby improving the adsorption effect during the adsorption process and improving the water quality. Description of the drawings:

[0017] 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 work.

[0018] Figure 1 It is a structural schematic diagram of this embodiment;

[0019] Figure 2 This is a control principle diagram of this embodiment.

[0020] In the figure: resin tank 1, lower filter plate 2, water filter plate 3, filter hole 4, water receiving port 5, water receiving pipe 6, overflow port 7, pressure relief port 8, water outlet 9, water inlet 10, filler resin 11, wastewater tank 12, backwash fan 13, one-way valve 14, regeneration agent box 15, dosing valve 16, liquid level sensor 17, controller 18, pH sensor 19, manhole 20, window 21, resin inlet 22, resin outlet 23. Specific implementation method:

[0021] The following will be combined with the drawings in 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 in 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.

[0022] Embodiment 1:

[0023] like Figure 1 , 2The ion exchange resin device shown in the figure is easy to regenerate, comprising a resin tank 1, a lower filter plate 2 is sealed at the lower part of the resin tank 1, and a water filter plate 3 is sealed at the upper part of the resin tank 1; an overflow port 7 and a pressure relief port 8 are respectively opened at the top of the resin tank 1, and a water outlet 9 and an air inlet are respectively opened at the bottom of the resin tank 1; a water inlet 10 is opened at the upper part of the resin tank 1 between the water filter plate 3 and the lower filter plate 2; and a filler resin 11 is filled in the lower part of the space formed by the water filter plate 3 and the lower filter plate 2;

[0024] The overflow port 7 is connected to the water inlet 10 of the wastewater tank 12 through a pipeline; the air inlet is connected to the air outlet of the backwash fan 13 through a pipeline, and a one-way valve 14 is provided at the air inlet;

[0025] The water outlet end of the water collecting filter plate 3 extends to the outside of the resin tank 1 and is connected to the water inlet 10 of the wastewater tank 12 through a pipeline; a liquid level sensor 17 is provided on the inner wall of the resin tank 1 between the water collecting filter plate 3 and the lower filter plate 2;

[0026] A regeneration agent inlet is provided on the side wall of the resin tank 1 below the lower filter plate 2 . The regeneration agent inlet is connected to the outlet of the regeneration agent medicine box 15 through a pipeline. A dosing valve 16 is provided at the outlet of the regeneration agent medicine box 15 .

[0027] The water filter plate 3 is a flat plate structure with a hollow interior. A plurality of filter holes 4 are evenly provided on the water filter plate 3 to communicate with both sides of the water filter plate 3. A plurality of water receiving ports 5 are provided on the top of the water filter plate 3 to communicate with the interior of the water filter plate 3. One end of the water receiving pipe 6 is communicated with the interior of the water filter plate 3, and the other end passes through the side wall of the resin tank 1 and is placed outside the resin tank 1 to communicate with the water inlet 10 of the wastewater tank 12. A pH sensor 19 is provided on the water receiving pipe 6.

[0028] The signal output ends of the liquid level sensor 17 and the pH sensor 19 are both signal-connected to the signal input end of the controller 18 , and the signal output end of the controller 18 is signal-connected to the signal input end of the dosing valve 16 and the backwash fan 13 .

[0029] A manhole 20 is provided on the side wall of the resin tank 1 above the water collecting filter plate 3, and a viewing window 21, a resin inlet 22 and a resin outlet 23 are provided on the side wall of the resin tank 1 between the water collecting filter plate 3 and the lower filter plate 2.

[0030] Job Description:

[0031] When the device is used for adsorption, wastewater enters from the water inlet 10, flows through the filler resin 11 from top to bottom, and after the filler resin 11 adsorbs the impurity ions contained therein, the water is discharged from the water outlet 9. When the device is used for adsorption, the regeneration agent enters the resin tank 1 from the regeneration agent inlet at the bottom of the resin tank 1, and the regeneration agent passes through the filler resin 11 from bottom to top. The regeneration agent first contacts the resin at the bottom that has not yet failed. At this time, due to the high concentration of the regeneration agent, the concentration of impurity ions exchanged from the resin is very small, so that the resin can be "deeply regenerated". When the regeneration agent reaches the upper resin, although the concentration of the regeneration agent decreases and the content of impurity ions increases, since the upper resin is deeply failed (high saturation), a good regeneration effect can still be obtained. In this way, the regeneration agent can always fully contact with the resin, so that the resin is fully regenerated, the utilization rate of the regeneration agent is improved, the consumption of the regeneration agent is reduced, and the discharge amount and discharge concentration of the regeneration waste liquid are reduced, and the economic benefits are significant.

[0032] This device can make regenerants containing different concentrations contact and react with resins with different regeneration degrees until they are discharged, and the utilization rate of the regenerant is high. After using this device, the consumption of the regenerant can be reduced by 30-50% compared with before, which can greatly reduce the discharge of regeneration waste liquid, not only saving the cost of using the regenerant, but also saving the cost of treating the regeneration waste liquid.

[0033] At the same time, during the regeneration process, the device can blow air into the resin tank 1 through the backwash fan 13 to disturb the resin, further improving the regeneration effect. Moreover, after the disturbance, the resin can also be loosened, so that the wastewater can be more fully in contact with the resin during adsorption, thereby improving the adsorption effect during the adsorption process and improving the water quality. In order to prevent the liquid level in the resin tank 1 from being too high, so that the resin particles are brought to the upper part and cause clogging of the filter hole 4, the device can monitor the liquid level in the resin tank 1 through the liquid level sensor 17, so that the liquid level is kept 5 to 10 cm above the top of the resin.

[0034] In addition, the pH value at the outlet of the water collecting pipe 6 can be monitored by the pH sensor 19 to determine the ion concentration in the regenerated waste liquid. When the pH value at the outlet of the water collecting pipe 6 is within a preset range, the regeneration process is determined to be completed, the dosing valve 16 is closed, and the backwash fan 13 is stopped.

[0035] 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. An ion exchange resin device that is easy to regenerate, characterized in that: The invention comprises a resin tank, wherein a lower filter plate is sealed at the lower part of the resin tank, and a water collecting filter plate is sealed at the upper part of the resin tank; an overflow port and a pressure relief port are respectively opened at the top of the resin tank, and a water outlet and an air inlet are respectively opened at the bottom of the resin tank; a water inlet is opened at the upper part of the resin tank between the water collecting filter plate and the lower filter plate; and a filler resin is filled at the lower part of the space formed by the water collecting filter plate and the lower filter plate; The overflow port is connected to the water inlet of the wastewater tank through a pipeline; the air inlet is connected to the air outlet of the backwash fan through a pipeline, and a one-way valve is provided at the air inlet; The water outlet end of the water receiving filter plate extends to the outside of the resin tank and is connected to the water inlet of the wastewater tank through a pipeline; a liquid level sensor is provided on the inner wall of the resin tank between the water receiving filter plate and the lower filter plate; A regeneration agent inlet is provided on the side wall of the resin tank below the lower filter plate, the regeneration agent inlet is connected to the outlet of the regeneration agent medicine box through a pipeline, and a dosing valve is provided at the outlet of the regeneration agent medicine box; The signal output end of the liquid level sensor is signal-connected to the signal input end of the controller, and the signal output end of the controller is signal-connected to the signal input end of the dosing valve.

2. The ion exchange resin device for easy regeneration according to claim 1, characterized in that: The water-receiving filter plate is a flat plate structure with a hollow interior, and a plurality of filter holes communicating with both sides of the water-receiving filter plate are evenly arranged on the water-receiving filter plate; a plurality of water-receiving ports communicating with the interior of the water-receiving filter plate are arranged on the top of the water-receiving filter plate, one end of a water-receiving pipe is communicated with the interior of the water-receiving filter plate, and the other end passes through the side wall of the resin tank and is placed outside the resin tank, communicating with the water inlet of the wastewater tank.

3. The ion exchange resin device for easy regeneration according to claim 2, characterized in that: A pH sensor is provided on the water receiving pipe, a signal output end of the pH sensor is signal-connected to a signal input end of a controller, and a signal output end of the controller is signal-connected to a signal input end of the backwash fan.

4. The ion exchange resin device for easy regeneration according to claim 1, characterized in that: A manhole is provided on the side wall of the resin tank above the water receiving filter plate.

5. The ion exchange resin device for easy regeneration according to claim 1, characterized in that: A viewing window is provided on the side wall of the resin tank between the water receiving filter plate and the lower filter plate.

6. The ion exchange resin device for easy regeneration according to claim 1, characterized in that: A resin inlet and a resin outlet are respectively provided on the side wall of the resin tank between the water receiving filter plate and the lower filter plate.

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