CN213202484U - Resin tower regeneration effluent treatment plant - Google Patents
Resin tower regeneration effluent treatment plant Download PDFInfo
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- CN213202484U CN213202484U CN202021957753.9U CN202021957753U CN213202484U CN 213202484 U CN213202484 U CN 213202484U CN 202021957753 U CN202021957753 U CN 202021957753U CN 213202484 U CN213202484 U CN 213202484U
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Abstract
The application relates to a resin tower regeneration wastewater treatment device, which comprises an acidic wastewater pool (3) for receiving acidic wastewater of a resin tower, an alkaline wastewater pool (4) for receiving alkaline wastewater of the resin tower, a water diversion tank (6) and a circulating pump (7), wherein the water diversion tank (6) is communicated with the alkaline wastewater pool (4), and the circulating pump (7) is communicated to a salt dissolving pool; the acidic wastewater tank (3) and the alkaline wastewater tank (4) are formed by separating a large reaction tank left and right through a partition plate, an overflow port (5) is formed in the upper part of the partition plate, and the overflow port (5) is used for enabling alkaline wastewater to overflow and flow into the acidic wastewater tank (3) for acid-base neutralization. In the application, on one hand, alkaline wastewater can be recycled to the salt melting tank through the water diversion tank and the circulating pump, on the other hand, the alkaline wastewater overflows to the acidic wastewater tank for acid-base neutralization, the utilization rate of regenerated water of the resin tower is improved, the acidic wastewater is discharged after being neutralized with the alkaline wastewater, and the environmental pollution is reduced; the device has simple and compact structure, small occupied area and low cost.
Description
Technical Field
The application relates to the technical field of wastewater treatment, in particular to a resin tower regeneration wastewater treatment device.
Background
The industrial water situation in China is very severe, the industrial water accounts for 20% of the total national water consumption, and the discharged sewage accounts for about 49% of the total national sewage discharge. The comprehensive utilization of water resources in the chlor-alkali industry is carried out, so that economic benefits can be brought to enterprises, the responsibility care concept of the chlor-alkali industry can be further reflected, and good social benefits are realized.
In an ionic membrane caustic soda system, a three-tower operation process is adopted for secondary brine refining, namely two chelating resin towers are used for brine filtration, and one chelating resin tower is used for off-line regeneration. The chelate resin is regenerated by switching every 24h under the normal condition, at the moment, the second resin tower which operates in the previous period enters an off-line regeneration state, and the chelate resin tower which completes off-line regeneration in the earlier period is merged into the operating chelate resin tower, so that the operation process of double-tower filtration and single-tower regeneration is realized. The regeneration of the chelate resin needs 7 steps of water washing I → backwashing → acid regeneration → water washing II → alkali regeneration → water washing III → brine replacement, and needs 24 hours. When the resin tower runs for 24 hours for regeneration once to produce acid wastewater 96.32m for carrying out high-speed cultivation, alkaline wastewater 76.84 m is produced, and the wastewater is directly discharged outside, so that not only is the environment pollution caused, but also water resource waste is caused.
Disclosure of Invention
The technical problem that this application will be solved provides a resin tower regeneration effluent treatment plant, improves the utilization ratio of resin tower regeneration water, reduces environmental pollution.
In order to solve the problems, the application provides a resin tower regeneration wastewater treatment device which comprises an acidic wastewater pool for receiving resin tower acidic wastewater, an alkaline wastewater pool for receiving resin tower alkaline wastewater, a water diversion tank and a circulating pump, wherein the water diversion tank and the circulating pump are communicated with the alkaline wastewater pool, and the circulating pump leads to a salt dissolving pool; the acidic wastewater pond and the alkaline wastewater pond are formed by dividing a large reaction pond into a left reaction pond and a right reaction pond by a partition plate, the upper part of the partition plate is provided with an overflow port, and the overflow port is used for enabling alkaline wastewater in the alkaline wastewater pond to overflow and flow into the acidic wastewater pond and carrying out acid-base neutralization on the acidic wastewater; the acidic wastewater tank and the alkaline wastewater tank each have a level gauge, and the acidic wastewater tank has a level control valve.
Preferably, the water tank is provided with a pure water pipeline, and the pure water pipeline is provided with a water adding valve.
Compared with the prior art, the method has the following advantages:
in the application, on one hand, alkaline wastewater can be recycled to the salt melting tank through the water diversion tank and the circulating pump, on the other hand, the alkaline wastewater overflows to the acidic wastewater tank for acid-base neutralization, the utilization rate of regenerated water of the resin tower is improved, the acidic wastewater is discharged after being neutralized with the alkaline wastewater, and the environmental pollution is reduced; and the acid wastewater tank and the alkaline wastewater tank are formed by separating a large reaction tank from the left and the right through a partition plate with an overflow port, so that the structure is simple and compact, the occupied area is small, and the manufacturing cost is low.
Drawings
The following describes embodiments of the present application in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of a resin tower regeneration wastewater treatment device provided by an embodiment of the present application.
In the figure: 1-resin tower acid wastewater pipeline, 2-resin tower alkaline wastewater pipeline, 3-acid wastewater pool, 4-alkaline wastewater pool, 5-overflow port, 6-water diversion tank, 7-circulating pump, 8-salt removal pool pipeline, 9-pure water pipeline, 10-water adding valve, 11-liquid level control valve, and 12-liquid level meter.
Detailed Description
Referring to fig. 1, the embodiment of the present application provides a resin tower regeneration wastewater treatment device, which includes an acidic wastewater tank 3 for receiving acidic wastewater of a resin tower, an alkaline wastewater tank 4 for receiving alkaline wastewater of the resin tower, and a water diversion tank 6 and a circulating pump 7 which are communicated with the alkaline wastewater tank 4, wherein the circulating pump 7 leads to a salt dissolving tank. The water diversion tank 6 is provided with a pure water pipeline 9, and the pure water pipeline 9 is provided with a water adding valve 10.
The acidic wastewater tank 3 and the alkaline wastewater tank 4 are formed by dividing a large reaction tank left and right by a partition plate, the upper part of the partition plate is provided with an overflow port 5, and the overflow port 5 is used for enabling alkaline wastewater in the alkaline wastewater tank 4 to overflow and flow into the acidic wastewater tank 3 to be neutralized with acid wastewater.
The acid wastewater tank 3 and the alkaline wastewater tank 4 each have a level gauge 12, and the acid wastewater tank 3 has a level control valve 11.
The working principle is as follows: after the resin tower regenerates, acid wastewater flows into an acid wastewater pool 3 through a resin tower acid wastewater pipeline 1, alkali wastewater flows into an alkali wastewater pool 4 through a resin tower alkali wastewater pipeline 2, a drain valve at the bottom of the acid wastewater pool 3 is closed, when a liquid level meter 12 of the alkali wastewater pool 4 displays that the liquid level reaches a certain value, a part of alkali wastewater can directly pass through a water diversion tank 6 and pass through a salt dissolving pool pipeline 8 to be pumped into a salt dissolving pool through a circulating pump 7, another part of alkali wastewater can flow into the acid wastewater pool 3 and the acid wastewater in the pool through an overflow port 5 to be neutralized when the salt dissolving position is not needed, the pollution of the acid wastewater to the environment is reduced, the neutralized water can be recycled through a liquid level controllable valve 11, and finally the wastewater is recycled. During normal production, only the wastewater is discharged into the acidic and alkaline wastewater ponds, and then the liquid level height is determined to treat the wastewater periodically.
The technical solutions provided by the present application are described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the structure and the core concept of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
Claims (2)
1. The resin tower regeneration wastewater treatment device is characterized by comprising an acid wastewater tank (3) for receiving acid wastewater of a resin tower, an alkaline wastewater tank (4) for receiving alkaline wastewater of the resin tower, a water diversion tank (6) and a circulating pump (7) which are communicated with the alkaline wastewater tank (4), wherein the circulating pump (7) leads to a salt dissolving tank; the acidic wastewater tank (3) and the alkaline wastewater tank (4) are formed by dividing a large reaction tank left and right by a partition plate, the upper part of the partition plate is provided with an overflow port (5), and the overflow port (5) is used for enabling alkaline wastewater in the alkaline wastewater tank (4) to overflow and flow into the acidic wastewater tank (3) to be neutralized with acidic wastewater; the acid wastewater basin (3) and the alkaline wastewater basin (4) each have a level gauge (12), and the acid wastewater basin (3) has a level control valve (11).
2. The device according to claim 1, characterized in that the water lead tank (6) is provided with a plain water line (9), and the plain water line (9) is provided with a water filling valve (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021957753.9U CN213202484U (en) | 2020-09-09 | 2020-09-09 | Resin tower regeneration effluent treatment plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021957753.9U CN213202484U (en) | 2020-09-09 | 2020-09-09 | Resin tower regeneration effluent treatment plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213202484U true CN213202484U (en) | 2021-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202021957753.9U Active CN213202484U (en) | 2020-09-09 | 2020-09-09 | Resin tower regeneration effluent treatment plant |
Country Status (1)
| Country | Link |
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| CN (1) | CN213202484U (en) |
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2020
- 2020-09-09 CN CN202021957753.9U patent/CN213202484U/en active Active
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