Mineralization treatment tank

Abstract

The utility model belongs to the field of water treatment, and particularly relates to a mineralization treatment tank. The mineralization treatment pond comprises a water inlet distribution channel, an upward flow dissolving pond, a downward flow sand filtering pond, a central channel, a communication channel, a feeding port and a pipe gallery. And the inlet water distribution channel distributes inlet water to each grid of treatment pond by adopting weir flow. And a dissolution reaction of mineralized filler occurs in the upward flow dissolving tank, so that the alkalinity, hardness and nutrient ions of desalted water are increased. The downward quicksand filter guarantees the stability of the effluent turbidity, and particularly eliminates the influence of the increase of the effluent turbidity of the mineralization dissolving tank when the mineralization filler is supplemented. The central channel is divided into three layers, the bottom-layer distribution channel is a water inlet and backwashing gas and water distribution channel of the dissolving tank, the middle-layer distribution channel is a water outlet and backwashing gas and water distribution channel of the sand filter tank, and the upper-layer distribution channel is a multifunctional central channel. And the multifunctional central channel is communicated with the dissolving tank communicating channel and the sand filter water collecting tank. The device can be popularized and applied to remineralization and restabilization of various desalted water.

Description

Technical Field

[0001] The utility model belongs to the field of water treatment, in particular to a mineralization treatment pool which is stacked with an upward flow dissolution pool and a downward flow sand filter pool. Background Art

[0002] Since desalinated water has removed most of the mineral ions, alkalinity, and hardness, its water quality is easy to "dissolve" the solid minerals it comes into contact with, which is manifested as unstable water quality and corrosive to the water distribution network. In addition, since desalinated water has removed beneficial mineral ions, it is not good for human health as drinking water, and it is not good for the growth of crops as agricultural irrigation water. Therefore, according to the water quality requirements, it is necessary to mineralize the seawater desalinated water and the brackish water desalinated water to increase the alkalinity, hardness and mineral ions required by the water quality, protect the water distribution network, water facilities and meet the needs of beneficial mineral ions. At present, the limestone dissolution tank, as a mineralization treatment structure, has the characteristics of stable mineralization effect, easy to adjust the degree of mineralization, excellent effluent water quality, and simple and flexible management. However, there are also problems such as increased effluent turbidity, longer flushing time, waste of flushing water, and waste of limestone fillers after adding limestone fillers. Utility Model Content

[0003] This utility model patent relates to a mineralization treatment tank with an upward flow dissolution tank and a downward flow sand filter tank, which is mainly used for the remineralization and re-stabilization of seawater desalination water and brackish water desalination water. The desalinated water of seawater and brackish water from unconventional water resources is supplied to municipal public water, agricultural irrigation water, and industrial water after mineralization and stabilization. The effluent from the dissolution tank is filtered through a sand filter tank and then discharged. After adding limestone filler, the turbidity of the effluent water remains stable. At the same time, the flushing time is short, the flushing water volume is small, and the limestone filler is saved.

[0004] The utility model specifically adopts the following technical solutions:

[0005] The mineralization treatment pool includes an inlet distribution channel, a lower upward flow dissolution pool, an upper downward flow sand filter, a central channel, a connecting channel, a feeding port, and a pipe gallery. The inlet distribution channel uses a weir flow to distribute the inlet water to each treatment pool. The dissolution reaction of the mineralized filler occurs in the lower upward flow dissolution pool, increasing the alkalinity, hardness and nutrient ions of the desalted water. The upper downward flow sand filter ensures the stability of the effluent turbidity, especially when supplementing the mineralized filler to eliminate the influence of the increased turbidity of the effluent from the mineralization dissolution pool. The central channel is divided into three layers, among which the bottom distribution channel is the inlet and backwashing gas and water distribution channel of the dissolution pool, the middle distribution channel is the outlet and backwashing gas and water distribution channel of the sand filter, and the upper layer is the multifunctional central channel. The multifunctional central channel is connected to the dissolution pool connecting channel and the sand filter water collection tank. The lower dissolution pool and the upper sand filter can both achieve air washing, air-water washing, and water flushing. The connecting channel extends from the top of the lower dissolution pool to the water hole with the multifunctional central channel. The feeding port is located at the upper part of the connecting channel and extends to the top of the treatment tank. It is used as the feeding port when replenishing the mineralized filler. It serves as the effluent connecting channel during normal operation. During normal operation, the effluent from the dissolution tank enters the multifunctional central channel from the connecting channel, and enters the sand filter tank from the multifunctional central channel and the water collection tank; when the dissolution tank is feeding, the filler is flushed, and the sand filter tank is backwashed, the dissolution tank flushing drainage is discharged into the multifunctional central channel through the connecting channel or the sand filter tank drainage through the water collection tank. The multifunctional central channel is equipped with a drainage gate connected to the wastewater channel. The flushing wastewater can be discharged to the wastewater channel by opening the drainage gate. Various types of pipelines such as water inlet, water outlet, flushing, and exhaust, as well as corresponding pipe valves and pipe fittings are set in the pipe gallery. Mineralized fillers use food-grade limestone-like minerals, and sand filter materials use quartz sand. The dissolution tank uses filter heads and filter plates for water and gas distribution, and the sand filter uses bread pipes for water and gas distribution. This technology can be promoted and applied to the remineralization and re-stabilization of various desalted water.

[0006] Furthermore, the water inlet distribution channel is located at the upper part of the pipe gallery, close to the mineralization treatment pool. The water inlet distribution channel includes a water inlet main channel, a water inlet distribution weir, and a single-cell water inlet channel. The desalted water in the water inlet main channel is evenly distributed to each single-cell water inlet channel through the water inlet distribution weir.

[0007] Furthermore, the single-cell water inlet channel introduces desalted water into the bottom distribution channel of the central channel through the single-cell water inlet pipe. A pneumatic regulating valve 1 is arranged on the water inlet pipe of the single-cell dissolution tank to control the water level of the single-cell water inlet channel.

[0008] Furthermore, the bottom distribution channel of the central channel is a dissolution tank inlet and backwash gas and water distribution channel.

[0009] Furthermore, the distribution channel at the bottom of the central channel leads the desalted water to the lower part of the filter plate of the filter head of the dissolving tank through the water distribution holes and the air distribution holes.

[0010] Furthermore, the filter head and filter plate are the water and gas distribution system of the lower dissolution tank.

[0011] Furthermore, the dissolution tank is located below the sand filter tank and adopts an upward flow operation mode. The desalted water reacts with the filler to dissolve and provide mineral ions, alkalinity and hardness to the desalted water.

[0012] Furthermore, the filler of the lower dissolution tank is limestone-like minerals, which can react with desalted water to dissolve and provide the required mineral ions to the desalted water according to the water quality requirements. The effective particle size of the limestone-like mineral filler particles is 0.9 to 1.2 mm, and the filler height is 1.2 to 2.2 m.

[0013] Furthermore, the supporting layer of the lower dissolution tank is made of coarse sand with an effective particle size of 2.0 to 4.0 mm and a thickness of 0.15 m.

[0014] Furthermore, the effluent from the lower dissolution tank is introduced into the multifunctional central channel through the connecting channel and the water holes thereon. The multifunctional central channel introduces the effluent from the dissolution tank into the upper sand filter tank through the sand filter tank sump connected thereto.

[0015] Furthermore, the upper sand filter adopts a downward flow operation mode to ensure the water quality of the treatment tank effluent, save flushing water, and reduce the consumption of dissolution tank fillers.

[0016] Furthermore, the upper sand filter ensures the effluent quality of the dissolution tank, especially after the dissolution tank is supplemented with limestone-like fillers, it can control the effluent turbidity, reduce the amount of flushing water, and reduce the loss of limestone-like fillers. The sand filter material is fine sand with an effective particle size of 0.55mm and a filler height of 0.8m.

[0017] Furthermore, the supporting layer of the upper sand filter tank is made of coarse sand with an effective particle size of 2.0 to 4.0 mm and a thickness of 0.35 m.

[0018] Furthermore, the water and air distribution system of the upper sand filter tank adopts a bread pipe. The bread pipe has water and air distribution holes evenly arranged in the filter grid along the length of the pipe. The bread pipe passes through the partition wall between the filter grid and the central channel, extends into the multifunctional central channel (the bread pipe in the central channel is encapsulated with plain concrete), and the end is arranged with a water distribution vertical pipe and an air distribution vertical pipe, extending downward to the middle distribution channel of the central channel. The effluent of the sand filter tank is collected through the bread pipe, and the effluent of the sand filter tank is led to the middle distribution channel of the central channel through the water distribution vertical pipe and the air distribution vertical pipe arranged at the end of the bread pipe.

[0019] Furthermore, the middle-level distribution channel of the central channel is connected to the outlet pipe of the single-grid sand filter tank led out from the outlet main pipe in the pipe gallery to lead out the water from the mineralization treatment pool. A pneumatic regulating valve 2 is set on the single-grid outlet pipe to control the operating water level of the single-grid sand filter tank.

[0020] Furthermore, the connecting channel extends from the lower dissolution tank to the water hole on the partition wall between the lower dissolution tank and the multifunctional central channel.

[0021] Furthermore, the feed inlet is located at the upper part of the connecting channel and rises to the top of the treatment tank.

[0022] Furthermore, a main water inlet pipe in the pipe gallery is connected to a main water inlet channel from the bottom plate, and a main water inlet pipe valve is arranged on the main water inlet pipe.

[0023] Furthermore, the flushing water main pipe in the pipe gallery leads downward to the single-cell dissolution tank flushing water pipe, which is connected to the single-cell dissolution tank water inlet pipe, and a pneumatic valve 2 is provided on the single-cell flushing water pipe. The pneumatic regulating valve 1 on the single-cell dissolution tank water inlet pipe controls the switching with the pneumatic valve 2 on the single-cell flushing water pipe to realize the switching between the desalted water inlet and the flushing water inlet of the dissolution tank.

[0024] Furthermore, the flushing water main pipe in the pipe gallery leads upward to a single-grid sand filter flushing water pipe, which is connected to the single-grid sand filter outlet pipe, and a pneumatic valve 1 is provided on the single-grid flushing water pipe. The pneumatic regulating valve 2 on the single-grid sand filter outlet pipe controls the switching with the pneumatic valve 1 on the single-grid flushing water pipe, so as to realize the switching between the sand filter outlet and the flushing water inlet.

[0025] Furthermore, the vent pipe on the vent main pipe in the pipe gallery is led out to the single-cell dissolution tank, and the single-cell dissolution tank vent pipe is flushed with the bottom of the single-cell dissolution tank flushing pipe. A pneumatic valve three is set on the single-cell vent pipe. The dissolution tank and the sand filter tank are emptied by switching the pneumatic valves on the single-cell vent pipe, the single-cell flushing pipe, and the single-cell inlet and outlet pipes.

[0026] Furthermore, the flushing gas main pipe in the pipe gallery is led out to the flushing gas pipes of the bottom distribution channel and the middle distribution channel of the central channel respectively, so as to realize the introduction of air during the gas flushing of the dissolution tank and the sand filter tank. The flushing gas pipes to the bottom distribution channel and the middle distribution channel of the central channel are connected to the top, and pneumatic valves 4 and 5 are respectively installed.

[0027] Furthermore, exhaust pipes of the bottom distribution channel and the middle distribution channel of the central channel are set in the pipe gallery, which are respectively connected to the top of the flushing air pipe and pneumatic valves are respectively set. The exhaust main pipe is connected above the highest water level of the mineralization treatment pool.

[0028] Furthermore, a drainage gate is provided at the end of the multifunctional central channel. When the single-cell treatment tank is flushed after replenishing the filler, the drainage gate is opened, and the flushing wastewater of the dissolution tank and the sand filter tank is discharged to the drainage channel through the drainage gate.

[0029] Furthermore, a main drainage pipe is provided in the drainage channel to discharge the collected flushing waste water.

[0030] The advantages of the utility model are: the structural type of the stacked sand filter on the dissolution tank enables the effluent from the upward-flowing dissolution tank to flow out after being filtered by the downward-flowing sand filter. After the dissolution tank filler is replenished, the turbidity of the effluent from the treatment tank is effectively guaranteed to be stable, the flushing time is reduced, the flushing water volume is saved, the consumption of the dissolution tank filler is reduced, and the production operation and maintenance management is simple and convenient.

[0031] The utility model has the following advantages:

[0032] The structural type of the stacked sand filter on the dissolution tank allows the effluent from the upward-flowing dissolution tank to flow out after being filtered by the downward-flowing sand filter. After replenishing the dissolution tank filler, it effectively ensures the stability of the turbidity of the treatment tank effluent, reduces the flushing time, saves flushing water, reduces the consumption of dissolution tank filler, and makes production operation and maintenance management simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is the internal schematic diagram of the mineralization treatment pool (I) and the AA cross-sectional view;

[0034] Figure 2 This is a schematic diagram of the interior of the mineralization treatment pool (II);

[0035] Figure 3 This is a schematic diagram of the top surface of the mineralization treatment pool;

[0036] Figure 4 This is a schematic diagram of the upper layer of the mineralization treatment pool;

[0037] Figure 5 This is a schematic diagram of the middle layer of the mineralization treatment pool;

[0038] Figure 6 This is a schematic diagram of the lower layer of the mineralization treatment pool;

[0039] Figure 7 for Figure 1 to Figure 4 BB cross-sectional view;

[0040] Figure 8 for Figure 1 to Figure 4 CC section view;

[0041] Fig. 9 for Figure 1 to Figure 4 DD cross-sectional view;

[0042] Fig.10 for Figure 1 to Figure 4 EE cross-sectional view.

[0043] Numbers in the figure:

[0044] Main water inlet pipe 1, main water inlet pipe valve 2, main water inlet channel 3, water inlet distribution weir 4, single-grid water inlet channel 5, single-grid dissolution tank water inlet pipe 6, pneumatic regulating valve 1 7, bottom distribution channel 7a, air distribution hole 8, water distribution hole 9, filter head 10, filter plate 11, supporting layer 12a, limestone-like filler 12b, connecting channel 13, feeding port 13a, multifunctional central channel 14, water collection tank 15, supporting layer 16a, fine sand filter material 16b, bread pipe 17, air distribution vertical pipe 18, water distribution vertical pipe 19, middle-layer distribution channel 20, sand filter tank outlet and flushing water inlet pipe 21, dissolution tank inlet and flushing water inlet pipe 22, single-grid sand filter outlet pipe pneumatic regulating valve (pneumatic regulating valve 2) 23, single-grid sand filter flushing water pipe pneumatic valve 24 (pneumatic valve 1), single-grid dissolution tank flushing water pipe Pneumatic valve (pneumatic valve two) 25, water outlet main pipe 26, flushing water main pipe 27, vent main pipe 28, single-cell vent pipe 28a, single-cell vent pipe pneumatic valve (pneumatic valve three) 29, middle-level distribution channel flushing air pipe 30, bottom-level distribution channel flushing air pipe 31, middle-level distribution channel flushing air pipe pneumatic valve (pneumatic valve four) 32, bottom-level distribution channel flushing air pipe pneumatic valve (pneumatic valve five) 33, single-cell flushing air pipe 34, flushing air main pipe 35, drainage channel 36, exhaust pipe 37, drainage gate 38, trumpet wall pipe 39, trumpet wall pipe 40, maintenance flange blind plate 41, drainage channel maintenance cover plate 42, feeding port cover plate 43, water inlet channel maintenance cover plate 44, ventilation shaft 45, stopcock valve 46, maintenance cover plate 46a, overflow pipe 47, water inlet channel vent pipe 48. DETAILED DESCRIPTION

[0045] The present invention is further described in detail below through specific implementations in combination with the accompanying drawings. It should be noted that the description of these implementations is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0046] like Figure 1 , Figure 2The figure shows the internal schematic diagram of a mineralization treatment tank with an upward flow dissolution tank stacked on a downward flow sand filter. A mineralization treatment tank with an upward flow dissolution tank stacked on a downward flow sand filter includes a plurality of unit filter cells, each of which is characterized in that the water inlet distribution channel is located at the upper part of the pipe gallery, close to the mineralization treatment tank. The water inlet distribution channel includes a water inlet main channel 3, a water inlet distribution weir 4, and a single-cell water inlet channel 5. The desalted water in the water inlet main channel 3 is evenly distributed to each single-cell water inlet channel 5 through the water inlet distribution weir 4. The water inlet main channel 3 is provided with a stacked beam valve 46, an overflow pipe 47, and a water inlet channel vent pipe 48. The stacked beam valve 46 can divide the water inlet main channel 3 into two sections. The overflow pipe 47 can discharge upstream water in an emergency. The vent pipe 48 can vent the water inlet main channel 3. The single-cell water inlet channel 5 introduces the desalted water into the bottom distribution channel 7a through the single-cell water inlet pipe 6. An adjustable pneumatic valve 7 is provided on the single-grid water inlet pipe 6 to control the water level of the single-grid water inlet channel 5. The bottom distribution channel 7a is the water inlet and backwashing air and water distribution channel for the dissolution tank. The bottom distribution channel 7a leads the desalted water to the lower part of the filter head 10 and the filter plate 11 of the dissolution tank through the water distribution hole 9 and the air distribution hole 8. The filter head 10 and the filter plate 11 are the water distribution and air distribution system of the lower dissolution tank. The filler of the lower dissolution tank adopts a limestone-like filler 12b, which can dissolve with the desalted water and provide the required mineral ions to the desalted water according to the water quality requirements. The limestone-like filler 12b has an effective particle size of 0.9 to 1.2 mm and a filler height of 1.2 to 2.2 m. The supporting layer 12a of the lower dissolution tank adopts coarse sand with an effective particle size of 2.0 to 4.0 mm and a thickness of 0.15 m. The effluent of the lower dissolution tank is introduced into the multifunctional central channel 14 through the connecting channel 13 and the water holes thereon. The multifunctional central channel 14 introduces the effluent from the dissolution tank into the upper sand filter tank through the sand filter tank sump 15 connected thereto. The sand filter material is fine sand 16b, with an effective particle size of 0.55mm and a packing height of 0.8m. The supporting layer 16a of the upper sand filter tank is coarse sand, with an effective particle size of 2.0-4.0mm and a thickness of 0.35m. The water distribution and air distribution system of the upper sand filter tank adopts a bread pipe 17. The bread pipe 17 has water distribution and air distribution holes evenly arranged in the filter grid along the pipe length direction. The bread pipe passes through the partition wall between the filter grid and the central channel, and extends into the multifunctional central channel 14 (the bread pipe in the central channel is encapsulated with plain concrete), and the water distribution vertical pipe 19 and the air distribution vertical pipe 18 are arranged at the end, extending downward to the middle distribution channel 20. The effluent from the sand filter tank is collected through the bread pipe 17, and the effluent from the sand filter tank is led to the middle distribution channel 20 through the water distribution vertical pipe 19 and the air distribution vertical pipe 18 arranged at the end of the bread pipe 17. The middle distribution channel 20 is connected to the outlet pipe of the single-grid sand filter tank led out from the outlet main pipe 26 in the pipe gallery to lead out the water from the mineralization treatment tank. A pneumatic regulating valve 23 is set on the single-grid outlet pipe to control the operating water level of the single-grid sand filter tank. The connecting channel 13 extends from the lower dissolution tank to the water hole on the partition wall between it and the multifunctional central channel 14. The feeding port 13a is located at the upper part of the connecting channel 13 and rises to the top of the treatment tank. The water inlet main pipe 1 in the pipe gallery is connected to the water inlet main channel 3 from the bottom plate, and the water inlet main pipe valve 2 is set on the water inlet main pipe 1.The flushing water main pipe 27 in the pipe gallery leads out the flushing water pipe of the single-grid dissolving tank downwards and is connected to the water inlet pipe 6 of the single-grid dissolving tank. A pneumatic valve 25 is provided on the single-grid flushing water pipe. The pneumatic regulating valve 7 on the water inlet pipe of the single-grid dissolving tank controls the switching with the pneumatic valve 25 on the single-grid flushing water pipe to realize the switching between the desalted water inlet and the flushing water inlet of the dissolving tank. The flushing water main pipe 27 in the pipe gallery leads out the flushing water pipe of the single-grid sand filter upwards and is connected to the water outlet pipe of the single-grid sand filter. A pneumatic valve 24 is provided on the single-grid flushing water pipe. The pneumatic regulating valve 23 on the water outlet pipe of the single-grid sand filter controls the switching with the pneumatic valve 24 on the single-grid flushing water pipe to realize the switching between the water outlet of the sand filter and the water inlet of the flushing water. The venting main pipe 28 in the pipe gallery leads out the venting pipe 28a to the single-grid dissolving tank. The venting pipe 28a of the single-grid dissolving tank is flatly connected to the bottom of the flushing pipe of the single-grid dissolving tank. A pneumatic valve 29 is provided on the single-grid venting pipe. The pneumatic valve 29 is opened, and the pneumatic valves 25 and 33 are closed to empty the dissolving tank. The pneumatic valves 29, 24, and 25 are opened, and the pneumatic valves 23 and 33 are closed to empty the sand filter tank. The flushing gas main pipe 35 in the pipe gallery is respectively led to the flushing air pipes of the bottom distribution channel 7a and the middle distribution channel 20 of the central channel to realize the introduction of air during the air flushing of the dissolving tank and the sand filter tank. The flushing air pipes to the bottom distribution channel 7a and the middle distribution channel 20 of the central channel are connected to the top, and pneumatic valves 33 and 32 are respectively set. The exhaust pipes of the bottom distribution channel 7a and the middle distribution channel 20 are set to be flushed with the top of their flushing air pipes, and pneumatic valves are respectively set. The exhaust main pipe 37 is connected above the highest water level of the mineralization treatment pool. A drainage gate 38 is set at the end of the multifunctional central channel. When the single-cell treatment pool is flushed after replenishing the filler, the drainage gate 38 is opened, and the flushing wastewater of the dissolving tank and the sand filter tank is discharged to the drainage channel 36 through the drainage gate 38. The drainage channel 36 is provided with a drainage main pipe to discharge the collected flushing wastewater. The above only expresses the implementation mode of the utility model, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A mineralization treatment pool, characterized in that: The invention comprises an inlet distribution channel, an upward dissolution tank, a downward sand filter tank, a central channel, a connecting channel (13), a feeding port (13a), and a pipe gallery. The inlet distribution channel adopts weir flow to distribute the inlet water to each treatment tank. The central channel is divided into three layers. The bottom distribution channel (7a) is the inlet and backwashing gas and water distribution channel of the dissolution tank. The middle distribution channel (20) is the outlet and backwashing gas and water distribution channel of the sand filter tank. The upper layer is a multifunctional central channel (14). The multifunctional central channel (14) is connected to the connecting channel (13) of the dissolution tank and is also connected to the water collection tank (15) of the sand filter tank. The connecting channel (13) extends from the top of the lower dissolution tank to the water hole connected to the multifunctional central channel (14). The feeding port (13a) is located at The upper part of the connecting channel (13) extends to the top of the treatment tank; during normal operation, the effluent from the dissolution tank enters the multifunctional central channel (14) through the connecting channel (13), and enters the sand filter tank through the multifunctional central channel (14) and the water collecting tank (15); when the dissolution tank is fed and the filler is flushed, and the sand filter tank is backwashed, the flushing drainage of the dissolution tank is discharged into the multifunctional central channel (14) through the connecting channel (13), and the sand filter tank drainage is discharged into the multifunctional central channel (14) through the water collecting tank (15); the multifunctional central channel (14) is provided with a drainage gate (38) connected to the wastewater channel, and the flushing wastewater is discharged to the wastewater channel through the drainage gate (38); various pipelines for water inlet, water outlet, flushing, and exhaust, as well as corresponding pipe valves and pipe fittings are arranged in the pipe gallery.

2. The mineralization treatment pool according to claim 1, characterized in that: The water inlet distribution channel is located at the upper part of the pipe gallery; the water inlet distribution channel includes a main water inlet channel, a water inlet distribution weir, and a single-cell water inlet channel, which evenly distributes the desalted water in the main water inlet channel to each single-cell water inlet channel through the water inlet distribution weir.

3. The mineralization treatment pool according to claim 2, characterized in that: The single-cell water inlet channel (5) introduces desalted water into the bottom distribution channel (7a) of the central channel through the single-cell dissolution tank water inlet pipe (6); a pneumatic regulating valve (7) is arranged on the single-cell water inlet pipe to control the water level of the single-cell water inlet channel (5).

4. The mineralization treatment pool according to claim 3, characterized in that: The bottom distribution channel is a water inlet and backwashing air and water distribution channel for the dissolution tank, which guides desalted water to the lower part of the filter head (10) and the filter plate (11) of the dissolution tank through the water distribution hole (9) and the air distribution hole (8); the filter head (10) and the filter plate (11) are the water and air distribution system of the lower dissolution tank.

5. The mineralization treatment pool according to claim 1, characterized in that: The dissolution tank is located below the sand filter tank and adopts an upward flow operation mode; a filler is arranged in the dissolution tank for dissolving with the desalted water; and a dissolution tank supporting layer is arranged below the filler.

6. The mineralization treatment pool according to claim 5, characterized in that: The filler is made of limestone-like minerals, the effective particle size of the filler particles is 0.9-1.2 mm, and the filler height is 1.2-2.2 m; the supporting layer is made of coarse sand, the effective particle size is 2.0-4.0 mm, and the thickness is 0.15 m.

7. The mineralization treatment pool according to claim 5, characterized in that: The effluent from the dissolution tank is introduced into the multifunctional central channel (14) through the connecting channel (13) and the water holes thereon; the multifunctional central channel (14) introduces the effluent from the dissolution tank into the upper sand filter tank through the sand filter tank sump (15) connected thereto.

8. The mineralization treatment pool according to claim 1, characterized in that: The sand filter adopts a downward flow operation mode; filter material is arranged in the sand filter; and a sand filter supporting layer is arranged below the filter material.

9. The mineralization treatment pool according to claim 8, characterized in that: The filter material is fine sand, with an effective particle size of 0.55 mm and a packing height of 0.8 m; the supporting layer is coarse sand, with an effective particle size of 2.0-4.0 mm and a thickness of 0.35 m.

10. The mineralization treatment pool according to claim 7, characterized in that: The water and gas distribution system of the sand filter tank adopts a bread pipe (17), and the bread pipe (17) has water and gas distribution holes evenly arranged along the length of the pipe in the filter grid. The bread pipe (17) passes through the partition wall between the filter grid and the central channel and extends into the multifunctional central channel (14); the ends of the bread pipe (17) are arranged with a water distribution vertical pipe (19) and an air distribution vertical pipe (18), which extend downward to the middle distribution channel (20).

11. The mineralization treatment pool according to claim 9, characterized in that: The middle distribution channel (20) is connected to the single-grid sand filter water outlet pipe led out from the water outlet main pipe (26) to lead out the water from the mineralization treatment pool; a pneumatic regulating valve 2 (23) is arranged on the single-grid sand filter water outlet pipe to control the operating water level of the single-grid sand filter.

12. The mineralization treatment pool according to claim 1, characterized in that: The connecting channel (13) extends from the lower dissolution tank to the water hole on the partition wall between the lower dissolution tank and the multifunctional central channel (14); the water inlet main pipe (1) in the pipe gallery is connected to the water inlet main channel (3) from the bottom plate, and the water inlet main pipe (1) is provided with a water inlet main pipe valve (2); the flushing water main pipe (27) in the pipe gallery leads downwardly to the flushing water pipe of the single-grid dissolution tank and is connected to the water inlet pipe (6) of the single-grid dissolution tank, and the single-grid flushing water pipe is provided with a pneumatic valve 2 (25); the pneumatic regulating valve 1 (7) on the water inlet pipe of the single-grid dissolution tank and the pneumatic valve 2 (25) on the single-grid flushing water pipe are controlled to switch, so as to realize the switching between the desalted water inlet and the flushing water inlet of the dissolution tank.

13. The mineralization treatment pool according to claim 1, characterized in that: The flushing water main pipe (27) in the pipe gallery leads upward to a single-grid sand filter flushing water pipe, which is connected to the single-grid sand filter outlet pipe. A pneumatic valve (24) is arranged on the single-grid flushing water pipe; a pneumatic regulating valve (23) on the single-grid sand filter outlet pipe controls the switching with the pneumatic valve (24) on the single-grid flushing water pipe to realize the switching between the sand filter outlet and the flushing water inlet.

14. The mineralization treatment pool according to claim 1, characterized in that: A vent pipe (28a) is led out from the vent main pipe (28) in the pipe gallery to the single-cell dissolution tank, and the single-cell dissolution tank vent pipe (28a) is flushly connected to the bottom of the single-cell dissolution tank flushing pipe; a pneumatic valve three (29) is arranged on the single-cell vent pipe.

15. The mineralization treatment pool according to claim 1, characterized in that: The flushing air main pipe (35) in the pipe gallery is respectively led out to the flushing air pipes of the bottom distribution channel (7a) and the middle distribution channel (20) of the central channel, so as to realize the introduction of air during the gas flushing of the dissolution tank and the sand filter tank; the flushing air pipes of the bottom distribution channel (7a) and the middle distribution channel (20) of the central channel are connected to the top, and are respectively provided with pneumatic valve four (32) and pneumatic valve five (33); the bottom distribution channel (7a) and the middle distribution channel (20) of the central channel are provided with exhaust pipes, which are respectively connected to the top of the flushing air pipes of the distribution channels, and are respectively provided with pneumatic valves; the exhaust main pipe (37) is connected above the highest water level of the mineralization treatment pool.

16. The mineralization treatment pool according to claim 1, characterized in that: A drainage gate is arranged at the end of the multifunctional central channel (14); when the single-cell treatment pool is flushed after replenishing the filler, the drainage gate is opened, and the flushing wastewater of the dissolution pool and the sand filter pool is discharged to the drainage channel through the drainage gate.

17. The mineralization treatment pool according to claim 16, characterized in that: The drainage channel is provided with a main drainage pipe to discharge the collected flushing waste water.

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