A water separator system for backflushing ion exchange columns

Abstract

The utility model discloses a kind of water separator systems suitable for backwashing of ion exchange column. Including ion exchange column with main pipe and first blow-off pipe, first blow-off pipe is by U shape, its export end is in the upper portion of the inner chamber of water receiving box, the lower end of water receiving box is connected with blow tank;The lower portion of water receiving box is provided with water guide pipe communicated with water storage tank, check valve is set in water guide pipe, the upper top surface of water storage tank is higher than the highest point of first blow-off pipe, first exhaust pipe and second exhaust pipe are respectively set on water storage tank and water receiving box.The utility model discloses in the blow-off pipe of ion exchange column, water receiving box and water storage tank communicated with water receiving box are provided, water storage tank can receive excessive sewage, avoid the phenomenon that pipeline is damaged due to the excessive high pressure in blow-off pipeline, cyclone separator is provided between water receiving box and water storage tank, cyclone separator can carry out gas-water separation, avoid sewage to corrode equipment and destroy on-site hygiene in air vent discharge.

Description

Technical Field

[0001] This utility model relates to a backwash water separator system for ion exchange columns, and pertains to the field of biochemical equipment technology. Background Technology

[0002] Currently, ion exchange columns require a large amount of water for rinsing during regeneration, including forward and backwashing. During backwashing, the instantaneous water velocity can exceed 300 cubic meters per hour, a flow rate far exceeding the design of normal discharge and sludge pipes. Furthermore, the sludge tank cannot be enlarged indefinitely due to limitations, resulting in the inability to promptly drain wastewater from the tank during backwashing. This leads to a high wastewater level in the tank, creating a "water seal." The flow velocity in the backwash drain pipe decreases instantaneously, causing wastewater to escape through the vent holes. Due to the high velocity, the wastewater can surge more than 10 meters high from the vent holes, splashing wastewater from the ion exchange column onto the work site. This can corrode equipment and compromise hygiene, disrupting production. Some companies address this by waiting for the sludge tank to be completely drained before backwashing, but this often requires a long wait, affecting normal production. Others replace the sludge pipe with thick-walled stainless steel pipes and seal the vent holes to prevent both air leakage and wastewater discharge. However, this method often results in bulging and leaks at pipe joints and welds after prolonged use, rendering it unusable for extended periods. If the instantaneous flow rate of the wastewater is too low, it will not be able to loosen the resin. Over time, this can easily lead to resin clumping, insufficient regeneration, and a decrease in the treatment capacity of the ion exchange column, thus affecting normal production. Summary of the Invention

[0003] The purpose of this invention is to design a backwash water separator system suitable for ion exchange columns that can prevent wastewater from being flushed out of the vent during backwashing.

[0004] This utility model includes an ion exchange column with a main pipe and a first drain pipe. The first drain pipe is U-shaped, and its outlet end is connected to the upper part of the inner cavity of the water receiving box. The lower end of the water receiving box is connected to the drain tank. A drain pipe communicating with the water storage tank is provided at the lower part of the water receiving box. A check valve is provided in the drain pipe. The top surface of the water storage tank is higher than the highest point of the first drain pipe. A first exhaust pipe and a second exhaust pipe are respectively provided on the water storage tank and the water receiving box.

[0005] Furthermore, it includes a cyclone separator, a first drain pipe connected to the water receiving box leading to the inlet of the cyclone separator, an outlet of the cyclone separator connected to a water storage tank, and a third exhaust pipe provided at the upper end of the cyclone separator.

[0006] Furthermore, the second exhaust pipe connects to the upper part of the third exhaust pipe, and the pipe opening is bent downwards.

[0007] Furthermore, the lower part of the water receiving box is conical, the water inlet pipe is located inside the conical part with its opening facing downwards, and the check valve is located at its opening.

[0008] In this invention, a water receiving box and a water storage tank connected to the water receiving box are installed on the drain pipe of the ion exchange column. When there is too much sewage in the drain tank, a water seal will be formed in the water receiving box, allowing the sewage to enter the water storage tank. After the sewage in the drain tank is discharged, the pressure in the water receiving box decreases, and the sewage in the water storage tank flows back into the drain tank, thus avoiding the phenomenon of damage to the pipe due to excessive pressure in the drain pipe.

[0009] This invention features a cyclone separator between the water receiving box and the water storage tank. During backwashing, the gas in the ion exchange column is discharged through the cyclone separator, achieving the purpose of pressure relief. At the same time, the cyclone separator can separate gas and water, preventing sewage from rushing out of the vent and corroding the equipment, thus avoiding damage to the site hygiene. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 for Figure 1 Enlarged view of part B in the middle Figure 4 yes Figure 1 A magnified view of a section at point C; Among them, 1. main pipe, 2. ion exchange column, 3. first drain pipe, 4. water receiving box, 5. first exhaust pipe, 6. cyclone separator, 7. second exhaust pipe, 8. third exhaust pipe, 9. water storage tank, 10. drain pipe, 11. check valve, 12. second drain pipe, 13. drain tank. Detailed Implementation

[0011] by Figure 1 Define the up, down, left, right, front, and back directions in this embodiment.

[0012] As shown in the figure, a backwash water separator system suitable for ion exchange columns includes an ion exchange column 2. The lower end of the ion exchange column 2 is equipped with a main pipe 1 for discharge and backwashing. The upper end of the ion exchange column 2 is equipped with a first drain pipe 3, which is U-shaped to slow the water flow velocity during the rising section. The outlet end of the first drain pipe 3 connects to the upper part of the inner cavity of a water receiving box 4. The lower end of the water receiving box 4 is conical for receiving wastewater. The lower end of the water receiving box 4 is connected to a wastewater tank 13 via a second drain pipe 12. A first vent pipe 5 is provided at the upper end of the water receiving box 4. The inlet end of the first vent pipe 5 is higher than the outlet end of the first drain pipe 3 within the water receiving box 4. When there is excessive wastewater in the wastewater tank 13, the wastewater in the water receiving box 4 overflows the first drain pipe 3, forming a water seal, and the wastewater enters the first vent pipe 5.

[0013] A cyclone separator 6 is installed above the first exhaust pipe 5. The outlet end of the first drain pipe 5 is connected to the inlet of the cyclone separator 6, which can separate the sewage transported by the first exhaust pipe 5 into gas and water, preventing sewage from being discharged from the cyclone separator 6 with the gas, and can further dehydrate the discharged gas. In this embodiment, the cyclone separator 6 adopts existing equipment, which will not be described in detail here. A third exhaust pipe 8 is installed at the upper end of the cyclone separator 6, and the gas separated by the cyclone separator 6 is discharged through the third exhaust pipe 8. The outlet of the cyclone separator 6 is connected to a water storage tank 9, which is used to store the sewage separated by the cyclone separator 6. A second exhaust pipe 7 is installed at the upper end of the water storage tank 9, which can discharge the gas in the water storage tank 9. The outlet end of the second exhaust pipe 7 is connected to the upper part of the third exhaust pipe, and its outlet end is bent downward. When the second exhaust pipe 7 discharges gas, if there is sewage mixed in the gas, the sewage can flow into the cyclone separator 6 along the third exhaust pipe 8, preventing sewage from being sprayed out due to excessive gas flow rate. A drain pipe 10 is installed at the lower end of the water storage tank 9. The drain pipe 10 is located inside the conical part of the water receiving box 4 with its opening facing downwards, and the top surface of the water storage tank 9 is higher than the highest point of the first sewage pipe 3. When some sewage is discharged from the sewage tank 13 and the water level in the sewage pipe drops, the sewage in the water storage tank 9 will flow into the water receiving box 4 and then into the sewage tank 13 through the drain pipe 10. A check valve 11 is installed at the opening of the drain pipe 10 to prevent sewage in the water receiving box 4 from flowing into the water storage tank 9 through the drain pipe 10.

[0014] In this embodiment, the main pipe 1 is first connected to the backwash pipe to backwash the ion exchange column 2. The backwashed wastewater flows through the first drain pipe 3, the water receiving box 4, and the second drain pipe 12 into the drain tank 13 for continuous discharge. The gas in the ion exchange column 2 passes through the first exhaust pipe 3 and is separated by the cyclone separator 6 before being discharged through the third exhaust pipe 8. If the capacity of the drain tank 13 is insufficient, resulting in poor drainage, the wastewater level will continue to rise. When the sewage overflows the outlet of the second drain pipe 12, a water seal is formed, increasing the pressure in the second drain pipe 12. This causes the sewage in the first drain pipe 3 to enter the water receiving box 4 and then the cyclone separator 6 through the first exhaust pipe 5. After the sewage is separated from the gas by the cyclone separator 6, it flows into the water storage tank 9. The gas in the water storage tank 9 is discharged through the second exhaust pipe 7. When some of the sewage in the drain tank 13 is discharged, the pressure in the water receiving box 4 is less than the pressure in the water storage tank 9. At this time, the check valve 11 opens, and the sewage in the water storage tank 9 flows into the water receiving box 4 through the drain pipe 10 and then into the drain tank 13 through the second drain pipe 12.

Claims

1. A backwash water separator system suitable for ion exchange columns, comprising an ion exchange column with a main pipe and a first drain pipe, characterized in that: The first drain pipe is U-shaped, with its outlet end connected to the upper part of the inner cavity of the water receiving box, and the lower end of the water receiving box connected to the drain tank; a drain pipe connected to the storage tank is installed at the lower part of the water receiving box, and a check valve is installed in the drain pipe; the top surface of the storage tank is higher than the highest point of the first drain pipe, and a first vent pipe and a second vent pipe are respectively installed on the storage tank and the water receiving box.

2. The backwash water separator system for ion exchange columns according to claim 1, characterized in that: It includes a cyclone separator, a first drain pipe connected to a water receiving box leading to the inlet of the cyclone separator, an outlet of the cyclone separator connected to a water storage tank, and a third exhaust pipe installed at the top of the cyclone separator.

3. The backwash water separator system for ion exchange columns according to claim 2, characterized in that: The second exhaust pipe connects to the upper part of the third exhaust pipe, and the pipe opening bends downwards.

4. The backwash water separator system for ion exchange columns according to claim 1, 2, or 3, characterized in that: The lower part of the water receiving box is conical, the drain pipe is located inside the conical part with its opening facing downwards, and the check valve is located at its opening.

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