A sulfate removal device and water treatment system

Abstract

The utility model provides a kind of sulphate removal device and water treatment system, including reaction tank, lime powder adding component and circulating component, processing cavity is formed in reaction tank, inlet and outlet are equipped on reaction tank, the adding end of lime powder adding component is inserted into processing cavity, for adding lime powder to reaction tank, circulating component has circulating liquid inlet end and circulating spray end, circulating liquid inlet end and circulating outlet end are evenly communicated with processing cavity, for extracting liquid in reaction tank and spraying into processing cavity.Lime powder adding component directly adds lime powder to reaction tank, can save a lot of water compared with the scheme of adding lime milk, circulating component is used to realize the circulating spray of liquid, can accelerate the mixing speed of lime powder, the liquid of spray can avoid lime powder floating on liquid surface, effectively solve the problem of lime powder concretion, can directly add lime powder, without mixing in advance, improve processing efficiency, reduce processing cost at the same time.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment, and in particular to a sulfate removal device and a water treatment system. Background Technology

[0002] In hydrometallurgical processes, wastewater typically contains substances such as cobalt, nickel, and sulfates. These substances need to be gradually removed to ensure that the wastewater meets discharge standards.

[0003] Existing technologies remove substances such as cobalt and nickel by adding an alkaline solution, while removing substances such as sulfates by adding lime slurry. Lime slurry is made by mixing lime powder with a certain amount of water.

[0004] The above technology has the following problems: lime milk is made by mixing lime powder with a certain amount of water, which will increase water consumption (about 30%) during the production process, resulting in a significant increase in processing costs. Utility Model Content

[0005] In view of this, it is necessary to provide a sulfate removal device and a water treatment system that can reduce the amount of water used to treat production wastewater, thereby reducing treatment costs.

[0006] This utility model provides a sulfate removal device, comprising:

[0007] A reaction vessel, wherein a processing chamber is formed inside the reaction vessel, and the reaction vessel is provided with an inlet and an outlet;

[0008] A lime powder adding component, wherein the adding end of the lime powder adding component extends into the processing chamber for adding lime powder into the reaction vessel; and

[0009] The circulation assembly has a circulation inlet end and a circulation spray end, which are connected to the processing chamber and are used to draw liquid from the reaction tank and spray it into the processing chamber.

[0010] In other embodiments, the circulation assembly includes an infusion pipeline, a pump, and several pressurized spray heads. The pressurized spray heads are disposed inside the reaction tank and located on the liquid surface. One end of the infusion pipeline is connected to the bottom of the reaction tank, and the other end is connected to the top of the reaction tank and connected to the pressurized spray heads. The pump is disposed on the infusion pipeline and is used to draw liquid from the bottom of the reaction tank through the infusion pipeline and send it to the pressurized spray heads.

[0011] In other embodiments, the portion of the infusion pipe located inside the reaction vessel is bent into a ring shape that matches the interior of the reaction vessel, and the pressurized spray head is fixed to the portion of the infusion pipe located inside the reaction vessel and faces the liquid surface of the reaction vessel.

[0012] In other embodiments, the top of the reaction vessel is provided with a lime addition port, and the addition end of the lime powder addition component extends into the processing chamber through the lime addition port.

[0013] In other embodiments, the lime powder adding component includes a lime powder storage tank, an inlet pipe, and a valve. The bottom of the lime powder storage tank has an outlet. One end of the inlet pipe is connected to the outlet, and the other end extends into the lime powder adding port. The valve is fixed on the inlet pipe and is used to control the inlet pipe to open or close.

[0014] In other embodiments, the inner diameter of the inlet pipe gradually increases along the direction of lime powder movement.

[0015] In other embodiments, the top of the reaction vessel is provided with several exhaust ports, and filter cotton is embedded in the exhaust ports.

[0016] This utility model also provides a water treatment system, including the sulfate removal device and the nickel-cobalt removal device described in any of the above claims, wherein the outlet end of the nickel-cobalt removal device is connected to the inlet of the reaction tank, and the nickel-cobalt removal device is used to remove nickel and cobalt from the water.

[0017] In other embodiments, the nickel-cobalt removal device includes a nickel-cobalt removal vessel and an alkaline material addition component. The nickel-cobalt removal vessel is provided with a waste liquid inlet and a treatment liquid outlet. The treatment liquid outlet serves as the liquid outlet of the nickel-cobalt removal device and is connected to the liquid inlet of the reaction tank. The alkaline material addition component is connected to the nickel-cobalt removal vessel and is used to introduce alkaline material into the nickel-cobalt removal vessel.

[0018] In other embodiments, an ammonia recovery device is also included, wherein the inlet of the ammonia recovery device is connected to the outlet of the reaction tank, and the ammonia recovery device is used to recover ammonia from the water.

[0019] The beneficial effects of this utility model are as follows:

[0020] This invention includes a reaction tank, a lime powder adding component, and a circulation component. The reaction tank forms a processing chamber and has an inlet and an outlet. The adding end of the lime powder adding component extends into the processing chamber to add lime powder. The circulation component has a circulating inlet and a circulating spray end, which are uniformly connected to the processing chamber. It is used to extract liquid from the reaction tank and spray it into the processing chamber. With the lime powder adding component and the circulation component, the lime powder adding component directly adds lime powder to the reaction tank, saving a significant amount of water compared to adding lime slurry. The circulation component circulates and sprays the liquid within the reaction tank, accelerating the mixing speed of the lime powder and preventing it from floating on the surface, effectively solving the problem of lime powder caking. Furthermore, it allows for direct addition of lime powder without pre-mixing, improving processing efficiency while saving significant water resources and reducing processing costs. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the wastewater treatment system of this utility model;

[0023] Figure 2 for Figure 1 A schematic cross-sectional view of the reaction vessel;

[0024] Wherein: 10-Sulfate removal device, 11-Reaction tank, 11a-Liquid inlet, 11b-Liquid outlet, 11c-Lime addition port, 11d-Exhaust port, 12-Lime powder addition component, 121-Lime powder storage tank, 122-Inlet pipe, 123-Valve, 13-Circulation component, 131-Liquid delivery pipe, 132-Liquid pump, 133-Pressurized spray head;

[0025] 20-Nickel-cobalt removal device, 21-Nickel-cobalt removal vessel, 22-Alkaline material addition component, 22a-Alkaline material storage tank, 22b-Feed pipe;

[0026] 30-Ammonia water recovery device. Detailed Implementation

[0027] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0028] like Figure 1 , Figure 2 As shown, an embodiment of this utility model provides a sulfate removal device 10, which includes: a reaction tank 11, a lime powder adding component 12, and a circulation component 13. The reaction tank 11 forms a processing chamber. The reaction tank 11 is provided with an inlet 11a and an outlet 11b. The adding end of the lime powder adding component 12 extends into the processing chamber for adding lime powder into the reaction tank 11. The circulation component 13 has a circulation inlet end and a circulation spray end. The circulation inlet end and the circulation spray end are connected to the processing chamber for extracting liquid from the reaction tank 11 and spraying it into the processing chamber.

[0029] In this invention, a lime powder adding component 12 and a circulation component 13 are provided. The lime powder adding component 12 directly adds lime powder into the reaction tank 11, which can save a significant amount of water compared to adding lime slurry. The circulation component 13 is used to circulate and spray the liquid in the reaction tank 11. On the one hand, it can accelerate the mixing speed of the lime powder, and the sprayed liquid can prevent the lime powder from floating on the surface of the liquid, effectively solving the problem of lime powder caking. On the other hand, lime powder can be added directly without prior mixing, which improves processing efficiency while saving a significant amount of water resources and reducing processing costs.

[0030] Specifically, the top of the reaction vessel 11 is provided with a lime addition port 11c, and the addition end of the lime powder addition component 12 extends into the processing chamber through the lime addition port 11c.

[0031] Specifically, the liquid inlet 11a is located on one side of the reaction vessel 11 near the bottom, and the liquid outlet 11b is located on the other side of the reaction vessel 11 near the top. This design aims to ensure that the liquid in the reaction vessel 11 flows from a low point to a high point, allowing sufficient reaction time for the lime powder to fully react and remove sulfates from the liquid.

[0032] Furthermore, the top of the reaction vessel 11 is provided with several exhaust ports 11d. When lime powder is introduced into the reaction vessel 11, it will cause the gas pressure inside the reaction vessel 11 to increase. Therefore, the exhaust ports 11d are designed to maintain the gas pressure change inside the reaction vessel 11.

[0033] Furthermore, the exhaust port 11d is embedded with filter cotton, which can filter the dust in the exhaust gas and prevent the dust in the reaction tank 11 from being discharged into the external environment.

[0034] Specifically, the lime powder adding component 12 includes a lime powder storage tank 121, an inlet pipe 122, and a valve 123. The bottom of the lime powder storage tank 121 has an outlet. One end of the inlet pipe 122 is connected to the outlet, and the other end extends into the lime adding port 11c. The valve 123 is fixed on the inlet pipe 122 and is used to control the inlet pipe 122 to be open or closed.

[0035] Furthermore, the inner diameter of the inlet pipe 122 gradually increases along the direction of lime powder movement. The purpose of this design is that as the distance to the reaction tank 11 gradually increases, the humidity gradually increases. In order to reduce the adhesion of lime powder to the inner wall of the inlet pipe 122, the inner diameter of the inlet pipe 122 is increased near the reaction tank 11 to avoid contact between lime powder and the inner wall of the pipe.

[0036] Specifically, the circulation component 13 includes an infusion pipeline 131, a liquid pump 132, and several pressurized spray heads 133. The pressurized spray heads 133 are disposed inside the reaction tank 11 and located on the liquid surface. One end of the infusion pipeline 131 is connected to the bottom of the reaction tank 11, and the other end is connected to the top of the reaction tank 11 and connected to the pressurized spray heads 133. The liquid pump 132 is disposed on the infusion pipeline 131 and is used to draw liquid from the bottom of the reaction tank 11 through the infusion pipeline 131 and send it to the pressurized spray heads 133. In use, the liquid pump 132 draws liquid from the bottom of the reaction tank 11 and sends it to the pressurized spray heads 133, which pressurize and atomize the liquid and spray it onto the liquid surface of the reaction tank 11. The atomized liquid comes into contact with and reacts with the lime powder floating on the surface, which can prevent the lime powder from floating on the surface and effectively solve the problem of lime powder caking. On the other hand, lime powder can be added directly without prior mixing, which improves treatment efficiency, saves a lot of water resources, and reduces treatment costs.

[0037] Furthermore, the portion of the infusion pipe 131 located inside the reaction vessel 11 is bent into a ring shape to match the interior of the reaction vessel 11. The pressurized spray head 133 is fixed to the portion of the infusion pipe 131 located inside the reaction vessel 11 and faces the liquid surface of the reaction vessel 11. The purpose of designing the portion of the infusion pipe 131 located inside the reaction vessel 11 as a ring is to avoid obstructing the inlet pipe 122 and prevent it from affecting the addition path of the lime powder.

[0038] This utility model also provides a water treatment system, which includes the sulfate removal device 10 and the nickel-cobalt removal device 20. The outlet end of the nickel-cobalt removal device 20 is connected to the inlet 11a of the reaction tank 11. The nickel-cobalt removal device 20 is used to remove nickel and cobalt from the water.

[0039] Furthermore, the nickel-cobalt removal device 20 includes a nickel-cobalt removal vessel 21 and an alkaline material addition component 22. The nickel-cobalt removal vessel 21 is provided with a waste liquid inlet and a treated liquid outlet. The treated liquid outlet serves as the liquid outlet of the nickel-cobalt removal device 20 and is connected to the liquid inlet 11a of the reaction tank 11. The alkaline material addition component 22 is connected to the nickel-cobalt removal vessel 21 and is used to introduce alkaline material into the nickel-cobalt removal vessel 21. The alkaline material makes the waste liquid alkaline, causing nickel and cobalt to precipitate.

[0040] Furthermore, the alkaline material addition component 22 includes an alkaline material storage tank 22a and a feed pipe 22b. One end of the feed pipe 22b is connected to the bottom of the alkaline material storage tank 22a, and the other end is connected to the nickel-cobalt removal vessel 21. The feed pipe 22b is used to guide the alkaline material in the alkaline material storage tank 22a into the nickel-cobalt removal vessel 21 to remove nickel and cobalt from the water in the nickel-cobalt removal vessel 21.

[0041] Furthermore, the alkaline material is a sodium sulfide solution.

[0042] Furthermore, the water treatment system also includes an ammonia recovery device 30, the inlet of which is connected to the outlet 11b of the reaction tank 11, and the ammonia recovery device 30 is used to recover ammonia from the water.

[0043] Furthermore, the ammonia recovery device 30 includes a distillation column, which is connected to the liquid outlet 11b of the reaction tank 11, and recovers ammonia through distillation.

[0044] The beneficial effects of this utility model are:

[0045] This invention includes a reaction tank, a lime powder adding component, and a circulation component. The reaction tank forms a processing chamber and has an inlet and an outlet. The adding end of the lime powder adding component extends into the processing chamber to add lime powder. The circulation component has a circulating inlet and a circulating spray end, which are uniformly connected to the processing chamber. It is used to extract liquid from the reaction tank and spray it into the processing chamber. With the lime powder adding component and the circulation component, the lime powder adding component directly adds lime powder to the reaction tank, saving a significant amount of water compared to adding lime slurry. The circulation component circulates and sprays the liquid within the reaction tank, accelerating the mixing speed of the lime powder and preventing it from floating on the surface, effectively solving the problem of lime powder caking. Furthermore, it allows for direct addition of lime powder without pre-mixing, improving processing efficiency while saving significant water resources and reducing processing costs.

[0046] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model.

Claims

1. A sulfate removal apparatus, characterized by, include: A reaction vessel, wherein a processing chamber is formed inside the reaction vessel, and the reaction vessel is provided with an inlet and an outlet; A lime powder adding component, wherein the adding end of the lime powder adding component extends into the processing chamber for adding lime powder into the reaction vessel; as well as The circulation assembly has a circulation inlet end and a circulation spray end, which are connected to the processing chamber and are used to draw liquid from the reaction tank and spray it into the processing chamber.

2. The sulfate removing apparatus according to claim 1, wherein The circulation assembly includes an infusion pipeline, a pump, and several pressurized spray heads. The pressurized spray heads are located inside the reaction tank and above the liquid surface. One end of the infusion pipeline is connected to the bottom of the reaction tank, and the other end is connected to the top of the reaction tank and the pressurized spray head. The pump is located on the infusion pipeline and is used to draw liquid from the bottom of the reaction tank through the infusion pipeline and send it to the pressurized spray head.

3. The sulfate removing apparatus according to claim 2, wherein The portion of the infusion pipe located inside the reaction vessel is bent into a ring shape that matches the interior of the reaction vessel. The pressurized spray head is fixed to the portion of the infusion pipe located inside the reaction vessel and faces the liquid surface of the reaction vessel.

4. The sulfate removing apparatus according to claim 1, wherein The top of the reaction vessel is provided with a lime addition port, and the addition end of the lime powder addition component extends into the processing chamber through the lime addition port.

5. The sulfate removing apparatus according to claim 4, wherein The lime powder adding component includes a lime powder storage tank, an inlet pipe, and a valve. The bottom of the lime powder storage tank has an outlet. One end of the inlet pipe is connected to the outlet, and the other end extends into the lime powder adding port. The valve is fixed on the inlet pipe and is used to control the opening or closing of the inlet pipe.

6. The sulfate removal device of claim 5, wherein The inner diameter of the inlet pipe gradually increases along the direction of lime powder movement.

7. The sulfate salt removing apparatus as claimed in claim 6, wherein The top of the reaction vessel has several exhaust ports, and filter cotton is embedded in the exhaust ports.

8. A water treatment system, characterized by, The device includes the sulfate removal device and the nickel-cobalt removal device as described in any one of claims 1-7, wherein the outlet of the nickel-cobalt removal device is connected to the inlet of the reaction vessel, and the nickel-cobalt removal device is used to remove nickel and cobalt from the water.

9. The water treatment system of claim 8, wherein, The nickel-cobalt removal device includes a nickel-cobalt removal vessel and an alkaline material addition component. The nickel-cobalt removal vessel is provided with a waste liquid inlet and a treatment liquid outlet. The treatment liquid outlet serves as the liquid outlet of the nickel-cobalt removal device and is connected to the liquid inlet of the reaction tank. The alkaline material addition component is connected to the nickel-cobalt removal vessel and is used to introduce alkaline material into the nickel-cobalt removal vessel.

10. The water treatment system of claim 8, wherein, It also includes an ammonia recovery device, the inlet of which is connected to the outlet of the reaction tank, and the ammonia recovery device is used to recover ammonia from the water.

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