Alkali liquor recovery device in resin regeneration process

Abstract

The utility model relates to the technical field of waste alkali liquor, in particular to an alkali liquor recovery device in a resin regeneration process, which comprises a mixed resin collecting barrel, the negative and positive resin separating device is connected with the mixed resin collecting barrel and is used for separating negative resin from positive resin by high-concentration alkali liquor; the backwashing part is used for backwashing the negative-positive resin; and the diffusion dialysis equipment is used for recycling the high-concentration alkali waste liquid. Through an assembly composed of a mixed resin collecting barrel, a negative and positive resin separating device, a backwashing part, diffusion dialysis equipment, a collecting barrel and an acid-base neutralization reaction tank, the waste alkali liquor is recycled, and a set of waste alkali liquor recycling device combining resin backwashing regeneration and diffusion dialysis equipment is provided. The method provided by the utility model overcomes the defects of high energy consumption and serious pollution in the traditional method, recycles the alkali liquor and the resin, has better environmental protection property, and avoids the pollution of the waste alkali liquor and the waste resin to the environment.

Description

Technical Field

[0001] The utility model relates to the technical field of waste alkali liquor, in particular to an alkali liquor recovery device during resin regeneration. Background Art

[0002] Waste alkali liquor mainly comes from fields such as photovoltaic, metal surface processing, papermaking, printing and dyeing, and metallurgical industry. If alkaline waste liquor is directly discharged into surface water without treatment, it will weaken the self-purification function of water bodies and endanger the growth of aquatic plants and animals; if it seeps into the ground, it will increase the salinity of the soil, damage the soil structure, and affect the growth of plants; if it is discharged into the sewer, it will corrode sewer pipes, channels, etc.

[0003] Traditional treatment methods include neutralization, concentration, incineration, etc. The neutralization method cannot avoid the large consumption of acid, is prone to cause secondary pollution, and will form a large amount of sludge at the same time; the treatment processes of concentration and incineration methods are intricate, with high energy consumption, and the waste alkali liquor to be treated needs to go through a series of treatments to reach a certain standard before this kind of method can be adopted.

[0004] During the existing neutralization, concentration, and incineration of waste alkali liquor treatment, there are problems of high energy consumption, serious pollution, and inability to apply an additional driving force when the concentration of waste alkali liquor is too low. Therefore, an alkali liquor recovery device during resin regeneration is proposed to provide a waste alkali liquor treatment and recovery mechanism that combines resin absorption filtration and diffusion dialysis equipment for the recovery of waste alkali liquor, overcomes the disadvantages of high energy consumption and serious pollution of traditional methods, enables the recovery and utilization of alkali liquor and resin, has good environmental protection, and avoids the pollution of the environment by waste alkali liquor and waste resin. Content of the Utility Model

[0005] In view of the problems in the prior art, the utility model provides an alkali liquor recovery device during resin regeneration to provide a waste alkali liquor treatment and recovery device that combines resin backwashing regeneration and diffusion dialysis equipment for the recovery of waste alkali liquor, overcomes the disadvantages of high energy consumption and serious pollution of traditional methods, enables the recovery and utilization of alkali liquor and resin, has good environmental protection, and avoids the pollution of the environment by waste alkali liquor and waste resin.

[0006] The technical solution adopted by the utility model to solve its technical problems is an alkali liquor recovery device during resin regeneration, including:

[0007] A mixed resin collection bucket for placing anion and cation resins;

[0008] An anion and cation resin separation device connected to the mixed resin collection bucket for separating anion resin and cation resin with high-concentration alkali liquor;

[0009] A backwashing part for backwashing anion and cation resins;

[0010] Diffusion dialysis equipment for the treatment of high-concentration alkali-containing waste liquid for alkali recovery and reuse;

[0011] The collection bucket part is connected to the anion-cation resin separation device, the backwashing part and the diffusion dialysis equipment, and is used for collecting the resin and the liquid after treatment at each stage;

[0012] The acid-base neutralization reaction tank is connected to the collection bucket part.

[0013] By adopting the above technical solution, through the components composed of the mixed resin collection bucket, the anion-cation resin separation device, the backwashing part, the diffusion dialysis equipment, the collection bucket part and the acid-base neutralization reaction tank, the recovery of alkali is realized, and a waste alkali liquid treatment and recovery mechanism combining resin backwashing regeneration and diffusion dialysis equipment is provided, so as to realize resource recovery and reuse, overcome the disadvantages of high energy consumption and serious pollution of the traditional method, and has good environmental protection.

[0014] Specifically, the collection bucket part includes:

[0015] The high-concentration alkali-containing waste liquid collection bucket is connected to the liquid outlet end of the anion-cation resin separation device;

[0016] The anion resin collection bucket is used for collecting the anion resin in the anion-cation resin separation device;

[0017] The cation resin collection bucket is connected to the anion-cation resin separation device and is used for collecting the cation resin in the anion-cation resin separation device;

[0018] The first low-concentration alkali-containing waste liquid collection bucket has its inlet end connected to the diffusion dialysis equipment and its outlet end connected to the acid-base neutralization reaction tank;

[0019] The regenerated alkali liquid collection bucket is connected to the anion-cation resin separation device;

[0020] The second low-concentration alkali-containing waste liquid collection bucket has its outlet end connected to the acid-base neutralization reaction tank;

[0021] The anion regenerated resin collection bucket is used for storing the anion regenerated resin after backwashing;

[0022] The cation resin collection bucket is used for collecting the cation resin in the anion-cation resin separation device;

[0023] The low-concentration acid-containing waste liquid collection bucket has its outlet end connected to the acid-base neutralization reaction tank;

[0024] The cation regenerated resin collection bucket is used for storing the cation regenerated resin after backwashing.

[0025] Specifically, the backwashing part includes:

[0026] The alkali addition backwashing device is connected to the anion resin collection bucket;

[0027] The acid addition backwashing device is connected to the positive resin collection barrel.

[0028] By adopting the above technical solution, the resin in the separated resin collection barrel is backwashed and regenerated by the backwashing part.

[0029] Specifically, the liquid inlet end of the diffusion dialysis device is connected to the liquid outlet end of the high-concentration alkali-containing waste liquid collection barrel, the high-concentration alkali liquid outlet end of the diffusion dialysis device is connected to the regenerated alkali liquid collection barrel, and the low-concentration alkali-containing waste liquid outlet end of the diffusion dialysis device is connected to the first low-concentration alkali-containing waste liquid collection barrel.

[0030] By adopting the above technical solution, low-concentration alkali-containing waste liquid and high-concentration regenerated alkali liquid are obtained through the treatment of the diffusion dialysis device.

[0031] Specifically, a residual liquid pipe, a cleaning pipe, a water inlet pipe, an alkali inlet pipe, and an alkali production pipe are connected to the liquid distribution plate of the diffusion dialysis device. Cleaning interfaces are connected to the residual liquid pipe, the cleaning pipe, the water inlet pipe, the alkali inlet pipe, and the alkali production pipe, and a residual liquid main pipe interface is connected to the tail end of the residual liquid pipe.

[0032] Specifically, an alkali cleaning main pipe interface, a lower sewage discharge port, an upper sewage discharge port, and a liquid receiving tray interface are provided on the cleaning pipe. A water inlet main pipe interface is connected to the water inlet pipe, the liquid inlet end of the water inlet main pipe interface is connected to a tap water bucket, an alkali inlet main pipe interface is provided on the alkali inlet pipe, and an alkali production main pipe interface is provided on the alkali production pipe.

[0033] The beneficial effects of the present utility model: Through the components composed of a mixed resin collection barrel, a negative and positive resin separation device, a backwashing part, a diffusion dialysis device, a collection barrel part, and an acid-base neutralization reaction tank, the recovery of waste alkali liquid is realized, and a waste alkali liquid treatment and recovery device combining resin backwashing regeneration and a diffusion dialysis device is provided, overcoming the disadvantages of high energy consumption and serious pollution of traditional methods, enabling the recovery and utilization of alkali liquid and resin, having good environmental protection, avoiding the pollution of waste alkali liquid and waste resin to the environment, and solving the problems of high energy consumption, serious pollution, and inability to apply an additional driving force when the concentration of waste alkali liquid is too low in the existing neutralization, concentration, and incineration processes for waste alkali liquid treatment. Brief Description of the Drawings

[0034] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0035] Figure 1 is the overall process schematic diagram of the present utility model;

[0036] Figure 2 is the schematic diagram of the negative and positive resin separation device of the present utility model;

[0037] Figure 3 is the schematic diagram of the diffusion dialysis device of the present utility model;

[0038] Figure 4 Schematic diagram of the back of the diffusion dialysis equipment of the present utility model;

[0039] Figure 5 Schematic diagram of the residual liquid pipe of the present utility model;

[0040] Figure 6 Schematic diagram of the cleaning pipe of the present utility model;

[0041] Figure 7 Schematic diagram of the water inlet pipe of the present utility model;

[0042] Figure 8 Schematic diagram of the alkali inlet pipe of the present utility model;

[0043] Figure 9 Schematic diagram of the alkali production pipe of the present utility model.

[0044] In the figure: 1. Mixed resin collection bucket; 2. Negative and positive resin separation device; 3. High-concentration alkali-containing waste liquid collection bucket; 4. Diffusion dialysis equipment; 81. Residual liquid pipe; 82. Cleaning pipe; 83. Water inlet pipe; 84. Alkali inlet pipe; 85. Alkali production pipe; 91. Cleaning interface; 92. Residual liquid main pipe interface; 93. Alkali cleaning main pipe interface; 94. Lower sewage discharge port; 95. Upper sewage discharge port; 96. Liquid receiving tray interface; 97. Water inlet main pipe interface; 98. Alkali production main pipe interface; 99. Alkali inlet main pipe interface; 5. Regenerated alkali liquid collection bucket; 6. First low-concentration alkali-containing waste liquid collection bucket; 7. Tap water bucket; 8. Negative resin collection bucket; 9. Alkali addition backwashing device; 10. Second low-concentration alkali-containing waste liquid collection bucket; 11. Negative regenerated resin collection bucket; 12. Positive resin collection bucket; 13. Acid addition backwashing device; 14. Low-concentration acid-containing waste liquid collection bucket; 15. Positive regenerated resin collection bucket; 16. Acid-base neutralization reaction tank. Detailed implementation manners

[0045] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with the specific implementation manners.

[0046] In order to recover the alkali liquid, as Figures 1-9 shown, an alkali liquid recovery device during the resin regeneration process of the present utility model includes:

[0047] A mixed resin collection bucket 1 for placing negative and positive resins;

[0048] A negative and positive resin separation device 2 connected to the mixed resin collection bucket 1 for separating negative resins and positive resins with high-concentration alkali liquid;

[0049] A backwashing part for backwashing negative and positive resins;

[0050] Diffusion dialysis equipment 4, used to treat high-concentration alkali-containing waste liquid for alkali recovery and recycling;

[0051] The collecting barrel part is connected with the negative and positive resin separation device 2, the backwash part and the diffusion dialysis equipment 4, and is used to collect the resin and the liquid after each stage of treatment;

[0052] The acid-base neutralization reaction tank 16 is connected to the collection barrel.

[0053] When in use, the waste alkali liquid is recovered by means of a component consisting of a mixed resin collection barrel 1, a negative-positive resin separation device 2, a backwash section, a diffusion dialysis device 4, a collection barrel section and an acid-base neutralization reaction tank 16, and a waste alkali liquid treatment and recovery device combining a resin backwash regeneration and a diffusion dialysis device is provided, thereby realizing resource recovery and reuse, overcoming the shortcomings of traditional methods such as high energy consumption and serious pollution, and having good environmental protection.

[0054] For collecting liquid material, for example, Figure 1 As shown, the utility model also includes that the collecting barrel portion includes:

[0055] A high concentration alkali-containing waste liquid collection barrel 3 is connected to the liquid outlet end of the negative-positive resin separation device 2;

[0056] A negative resin collecting barrel 8, used for collecting negative resin in the negative-positive resin separation device 2;

[0057] The positive resin collecting barrel 12 is connected to the negative-positive resin separating device 2 and is used to collect the positive resin in the negative-positive resin separating device 2;

[0058] A first low-concentration alkali-containing waste liquid collection barrel 6, the liquid inlet end of which is connected to the diffusion dialysis device 4, and the liquid outlet end of which is connected to the acid-base neutralization reaction tank 16;

[0059] The regeneration alkali solution collection barrel 5 is connected to the negative-positive resin separation device 2;

[0060] A second low-concentration alkali-containing waste liquid collection barrel 10, the liquid outlet of which is connected to the acid-base neutralization reaction tank 16;

[0061] The negative regeneration resin collection barrel 11 is used to store the negative regeneration resin after backwashing;

[0062] The positive resin collecting barrel 12 is used to collect the positive resin in the negative-positive resin separation device 2;

[0063] A low-concentration acid-containing waste liquid collection barrel 14, the liquid outlet of which is connected to an acid-base neutralization reaction tank 16;

[0064] The positive regeneration resin collection barrel 15 is used to store the positive regeneration resin after backwashing.

[0065] Exemplarily, as Figure 1 shown, the present utility model further includes that the backwashing part includes:

[0066] An alkali adding backwashing device 9, connected to the negative resin collection barrel 8;

[0067] An acid adding backwashing device 13, connected to the positive resin collection barrel 12.

[0068] During use, an alkali solution is added to the negative resin collection barrel 8 for backwashing through the alkali adding backwashing device 9, and an acid solution is added to the positive resin collection barrel 12 for backwashing through the acid adding backwashing device 13.

[0069] The liquid inlet end of the diffusion dialysis device 4 is connected to the liquid outlet end of the high-concentration alkali-containing waste liquid collection barrel 3, the high-concentration alkali liquid outlet end of the diffusion dialysis device 4 is connected to the regenerated alkali liquid collection barrel 5, and the low-concentration alkali-containing waste liquid outlet end of the diffusion dialysis device 4 is connected to the first low-concentration alkali-containing waste liquid collection barrel 6.

[0070] A residual liquid pipe 81, a cleaning pipe 82, a water inlet pipe 83, an alkali inlet pipe 84 and an alkali production pipe 85 are connected to the liquid distribution plate of the diffusion dialysis device 4. Cleaning interfaces 91 are connected to the residual liquid pipe 81, the cleaning pipe 82, the water inlet pipe 83, the alkali inlet pipe 84 and the alkali production pipe 85. The tail end of the residual liquid pipe 81 is connected to a residual liquid main pipe interface 92.

[0071] An alkali washing main pipe interface 93, a lower sewage discharge port 94, an upper sewage discharge port 95 and a liquid receiving tray interface 96 are arranged on the cleaning pipe 82. A water inlet main pipe interface 97 is connected to the water inlet pipe 83. The liquid inlet end of the water inlet main pipe interface 97 is connected to a tap water bucket 7. An alkali inlet main pipe interface 99 is arranged on the alkali inlet pipe 84, and an alkali production main pipe interface 98 is arranged on the alkali production pipe 85.

[0072] When the utility model is in use, negative and positive resins are placed in the mixed resin collection barrel 1. The waste alkali liquor to be treated is sent to the mixed resin collection barrel 1 through the negative and positive resin separation device 2. The negative and positive resins in the mixed resin collection barrel 1 are separated by high-concentration alkali liquor. The filtered high-concentration waste alkali liquor is collected by the high-concentration alkali-containing waste liquor collection barrel 3. Then, the high-concentration waste alkali liquor in the high-concentration alkali-containing waste liquor collection barrel 3 is pumped to the diffusion dialysis device 4. The diffusion dialysis device 4 processes it to obtain low-concentration waste alkali liquor and high-concentration alkali liquor. The low-concentration waste alkali liquor is collected by the first low-concentration alkali-containing waste liquor collection barrel 6. The low-concentration waste alkali liquor in the first low-concentration alkali-containing waste liquor collection barrel 6 is pumped to the acid-base neutralization reaction tank 16. The high-concentration alkali liquor is collected by the regenerated alkali liquor collection barrel 5. The alkali liquor in the regenerated alkali liquor collection barrel 5 is pumped to the negative and positive resin separation device 2 and recycled to the mixed resin collection barrel 1. The used waste negative and positive resins in the mixed resin collection barrel 1 are collected by the negative resin collection barrel 8 and the positive resin collection barrel 12 respectively. The resins in the negative resin collection barrel 8 and the positive resin collection barrel 12 are backwashed through the alkali addition backwashing device 9 and the acid addition backwashing device 13 respectively. The obtained low-concentration acid-containing waste liquor, low-concentration alkali-containing waste liquor, and recyclable negative and positive resins. The low-concentration acid-containing waste liquor and the low-concentration alkali-containing waste liquor are collected by the low-concentration acid-containing waste liquor collection barrel 14 and the second low-concentration alkali-containing waste liquor collection barrel 10 respectively. The waste alkali liquor in the low-concentration acid-containing waste liquor collection barrel 14 and the second low-concentration alkali-containing waste liquor collection barrel 10 is pumped to the acid-base neutralization reaction tank 16 for neutralization treatment, completing the recovery of waste alkali liquor and at the same time completing the recovery of resins.

[0073] The above shows and describes the basic principles, main features, and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of protection required by the utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims

1. An alkali solution recovery device in a resin regeneration process, characterized in that: include: A mixed resin collection bucket (1) is used to store negative and positive mixed resins; The negative and positive resin separation device (2) is connected to the mixed resin collection barrel (1) and uses a high-concentration alkali solution to separate the negative resin and the positive resin; Backwashing section, used for backwashing negative and positive resins; Diffusion dialysis equipment (4) is used to treat high-concentration alkali-containing waste liquid and recover alkali for recycling; The collecting barrel part is connected to the negative and positive resin separation device (2), the backwash part and the diffusion dialysis equipment (4) and is used to collect the resin and the liquid after each stage of treatment; The acid-base neutralization reaction tank (16) is connected to the collection barrel.

2. The alkali solution recovery device in the resin regeneration process according to claim 1, characterized in that: The collecting barrel portion comprises: A high-concentration alkali-containing waste liquid collection barrel (3) is connected to the liquid outlet of the negative-positive resin separation device (2); A negative resin collection barrel (8) for collecting negative resin in the negative-positive resin separation device (2); A positive resin collecting barrel (12) is connected to the negative-positive resin separation device (2) and is used to collect the positive resin in the negative-positive resin separation device (2); A first low-concentration alkali-containing waste liquid collection bucket (6), the liquid inlet end of which is connected to the diffusion dialysis device (4), and the liquid outlet end of which is connected to the acid-base neutralization reaction tank (16); The regeneration alkali solution collection bucket (5) is connected to the negative-positive resin separation device (2); A second low-concentration alkali-containing waste liquid collection barrel (10), the liquid outlet end of which is connected to the acid-base neutralization reaction tank (16); A negative regeneration resin collection bucket (11) is used to store the negative regeneration resin after backwashing; A positive resin collection barrel (12) for collecting positive resins in the negative-positive resin separation device (2); A low-concentration acid-containing waste liquid collection barrel (14), the liquid outlet of which is connected to an acid-base neutralization reaction tank (16); The positive regeneration resin collection barrel (15) is used to store the positive regeneration resin after backwashing.

3. The alkali solution recovery device in the resin regeneration process according to claim 2, characterized in that: The backwash unit comprises: An alkali backwashing device (9) is connected to the negative resin collecting barrel (8); The acid adding backwashing device (13) is connected to the positive resin collecting barrel (12).

4. The alkali solution recovery device in the resin regeneration process according to claim 3 is characterized in that: The liquid inlet of the diffusion dialysis device (4) is connected to the liquid outlet of the high-concentration alkali-containing waste liquid collection barrel (3), the high-concentration alkali liquid outlet of the diffusion dialysis device (4) is connected to the regeneration alkali liquid collection barrel (5), and the low-concentration alkali-containing waste liquid outlet of the diffusion dialysis device (4) is connected to the first low-concentration alkali-containing waste liquid collection barrel (6).

5. The alkali solution recovery device in the resin regeneration process according to claim 4, characterized in that: The liquid distribution plate of the diffusion dialysis device (4) is connected to a residual liquid pipe (81), a cleaning pipe (82), a water inlet pipe (83), an alkali inlet pipe (84) and an alkali production pipe (85); the residual liquid pipe (81), the cleaning pipe (82), the water inlet pipe (83), the alkali inlet pipe (84) and the alkali production pipe (85) are all connected to a cleaning interface (91); and the tail end of the residual liquid pipe (81) is connected to a residual liquid main pipe interface (92).

6. The alkali solution recovery device in the resin regeneration process according to claim 5, characterized in that: The cleaning pipe (82) is provided with an alkali cleaning main pipe interface (93), a lower sewage outlet (94), an upper sewage outlet (95) and a liquid receiving tray interface (96); the water inlet pipe (83) is connected with a water inlet main pipe interface (97); the liquid inlet end of the water inlet main pipe interface (97) is connected with a tap water bucket (7); the alkali inlet pipe (84) is provided with an alkali inlet main pipe interface (99); and the alkali production pipe (85) is provided with an alkali production main pipe interface (98).

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