Equipment for removing ionic pollution in wastewater

Abstract

The invention relates to the field of sewage treatment, in particular to equipment for removing ionic pollution in wastewater. The device comprises an outer cylinder, an inner cylinder, a water inlet, a dosing port, an emptying port and the like, wastewater enters the device from the water inlet, chemicals enter the device from the dosing port and react, the wastewater flows to the outer cylinder from the top of the inner cylinder, a carrier circulates to the bottom and enters the inner cylinder again, and final effluent flows out from an overflow weir. And finally, the generated carrier is discharged from an emptying port of the inner cylinder. Compared with a traditional method, the method has the advantages that the hydraulic retention time for treating the ionic pollutants is short, the efficiency is high, traditional sludge cannot be generated, and the utilization efficiency of various water resources is improved.

Description

Technical Field

[0001] The invention relates to the field of sewage treatment, and in particular to a device for removing ion pollution in wastewater. Background Art

[0002] Heavy metal ion pollution in water bodies refers to the pollution caused by pollutants containing heavy metal ions entering water bodies. Heavy metal wastewater (containing heavy metal ions such as chromium, cadmium, copper, mercury, nickel, zinc, etc.) generated in industrial production processes such as mining, metallurgy, machinery manufacturing, chemical industry, electronics, and instrumentation is one of the most serious industrial wastewaters that pollute water bodies and pose the greatest threat to humans. The heavy metals in wastewater cannot be decomposed and destroyed by various common water treatment methods, but can only be transferred to their location and their physical and chemical states. Therefore, heavy metal wastewater should be treated on-site at the place of production and not mixed with other wastewater. If sludge and wastewater containing heavy metal ions are used as fertilizers and to irrigate farmland, the soil will be polluted, causing the enrichment of heavy metal ions in crops and aquatic organisms after entering the water body, which will cause serious harm to the human body through the food chain. Therefore, there is an urgent need for a treatment equipment that can efficiently treat ionic pollutants in wastewater to achieve efficient and short-process removal of ionic pollutants, and ultimately achieve water purification. Summary of the invention

[0003] In view of the above, the object of the present invention is to provide a device for removing ion pollution in wastewater to solve the problem that the treatment device occupies a large area and is expensive.

[0004] A device for removing ion pollution in wastewater in the present scheme comprises an outer cylinder, an inner cylinder, a water inlet, a first drug inlet, a second drug inlet, a water outlet, a circular baffle, and an outer cylinder overflow weir; the inner cylinder is inside the outer cylinder, the circular baffle and the outer cylinder overflow weir are both inside the outer cylinder and are arranged above the inner cylinder from low to high, the water inlet is arranged at the bottom of the outer cylinder, the first drug inlet and the second drug inlet are arranged at the periphery of the outer cylinder and extend to the inner cylinder, and the water outlet is arranged at the top of the outer periphery of the outer cylinder.

[0005] Furthermore, the distance between the water inlet and the bottom of the outer cylinder is 200-500 mm.

[0006] Furthermore, a tangential spoiler column is arranged in front of the water inlet in the outer tube, and the height of the tangential spoiler column is 200-400 mm and the diameter is 300-600 mm.

[0007] Furthermore, a variable diameter throat pipe is provided between the dosing port and the water inlet, and the minimum diameter of the variable diameter throat pipe is 20-60 mm.

[0008] Furthermore, both the inner cylinder and the outer cylinder are equipped with a hardness-removing carrier for removing hardness ions, and the height of the hardness-removing carrier is 1500-2000 mm.

[0009] Furthermore, an emptying port for removing hard carriers is provided between the water inlet and the drug inlet. The emptying port extends from the inner cylinder to the outer cylinder and has an angle of 45-60° with the vertical.

[0010] Furthermore, the circular baffle has a width of 50-100 mm.

[0011] The beneficial effects of the present invention are: 1. It has high efficiency in removing ionic pollutants, and the device has a large load capacity and can cope with the impact of different water quality changes.

[0012] 2. For different ionic pollutants, targeted carriers can be customized according to their concentration and water volume, and the device can be enlarged or reduced. It is flexible and occupies a small area, which is conducive to industrial application. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The schematic diagram of this application; Figure numerals: water inlet 1, first drug inlet 2, second drug inlet 3, drain port 4, circular baffle 5, outer tube overflow weir 6, variable diameter throat 7, tangential spoiler column 8, inner tube 9, outer tube 10. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] An improved device for removing ionic pollutants from wastewater comprises an outer cylinder 10, an inner cylinder 9, a water inlet 1, a first drug inlet 2, a second drug inlet 3, a water outlet, a circular baffle 5, and an outer cylinder overflow weir 6; the inner cylinder 9 is inside the outer cylinder 10, the circular baffle 5 and the outer cylinder overflow weir 6 are both inside the outer cylinder 10 and arranged from low to high above the inner cylinder 9, the water inlet 1 is arranged at the bottom of the outer cylinder 10, the first drug inlet 2 and the second drug inlet 3 are arranged at the periphery of the outer cylinder 10 and extend to the inner cylinder 9, and the water outlet is arranged at the top of the periphery of the outer cylinder 10. The reaction sequence of the present invention is to first add the required carrier into the equipment inner cylinder 9 through a pump, and after the carrier enters the inner cylinder 9, it flows out of the outer cylinder 10 from the top, and then continues to enter the inner cylinder 9 from the bottom, and the cycle repeats; the wastewater enters from the water inlet 1, and at the same time, the corresponding reagent enters from the first drug inlet 2 and the second drug inlet 3, and then flows out through the overflow weir, and the ionic pollutants in the water are removed.

[0016] Preferably, the distance between the water inlet 1 and the bottom of the outer cylinder 10 is 200-500 mm.

[0017] Preferably, a tangential spoiler column 8 is provided in front of the water inlet 1 in the outer cylinder 10. The height of the tangential spoiler column 8 is 200-400 mm and the diameter is 300-600 mm, which is determined according to the processing volume. The larger the processing volume, the larger the height and diameter.

[0018] Preferably, a variable diameter throat 7 is provided between the dosing port and the water inlet 1. The diameter of the carrier is generally 6 mm. In order to ensure the passability of the carrier, the diameter of the variable diameter throat 7 at the smallest point needs to be more than 3 times the diameter of the carrier, preferably 20-60 mm, which can be changed according to the size of the processing volume. The larger the processing volume, the larger the diameter.

[0019] Preferably, the inner cylinder 9 and the outer cylinder 10 are both equipped with a hardness removal carrier for removing hardness ions, and the height of the hardness removal carrier is 1500-2000 mm. In addition, the types of carriers are not the same, and the type and quantity need to be determined according to the type and concentration of the ionic pollutants to be removed. Generally speaking, one ionic pollutant corresponds to one carrier, and multiple carriers can be mixed and used.

[0020] Preferably, an emptying port 4 for removing hard carriers is provided between the water inlet 1 and the drug inlet. The emptying port 4 extends from the inner tube 9 to the outer tube 10 and has an angle of 45-60° with the vertical.

[0021] Since the carrier first enters the inner cylinder 9 and then enters the outer cylinder 10 from the upper opening of the inner cylinder 9, its flow rate is greatly reduced at this time, and a part of it falls due to the reduced flow rate, while the other lighter part continues to move upward and falls back after hitting the circular baffle 5. The possibility of the carrier flowing out is not ruled out, but there is an overflow weir 6 of the outer cylinder, and it will not flow out with the outlet water in the end; preferably, the width of the circular baffle 5 is 50-100 mm, and the larger the processing volume, the wider its width is, to ensure that the carrier does not flow out.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for removing ion pollution in wastewater, characterized in that: The invention comprises an outer cylinder (10), an inner cylinder (9), a water inlet (1), a first drug inlet (2), a second drug inlet (3), a water outlet, a circular baffle (5), and an outer cylinder overflow weir (6); the inner cylinder (9) is located inside the outer cylinder (10); the circular baffle (5) and the outer cylinder overflow weir (6) are both located inside the outer cylinder (10) and are arranged above the inner cylinder (9) from low to high; the water inlet (1) is arranged at the bottom of the outer cylinder (10); the first drug inlet (2) and the second drug inlet (3) are arranged on the outer periphery of the outer cylinder (10) and extend to the inner cylinder (9); and the water outlet is arranged at the top of the outer periphery of the outer cylinder (10).

2. An improved device for removing ionic pollutants from wastewater according to claim 1, characterized in that: The distance between the water inlet (1) and the bottom of the outer cylinder (10) is 200-500 mm.

3. An improved device for removing ionic pollutants from wastewater according to claim 1, characterized in that: A tangential flow spoiler column (8) is arranged in front of the water inlet (1) in the outer cylinder (10); the height of the tangential flow spoiler column (8) is 200-400 mm and the diameter is 300-600 mm.

4. An improved device for removing ionic pollutants from wastewater according to claim 1, characterized in that: A variable diameter throat pipe (7) is provided between the drug addition port and the water inlet (1), and the diameter of the variable diameter throat pipe (7) at its smallest point is 20-60 mm.

5. An improved device for removing ionic pollutants from wastewater according to claim 1, characterized in that: The inner cylinder (9) and the outer cylinder (10) are both filled with a carrier for removing hardness ions, and the height of the hardness removing carrier is 1500-2000 mm.

6. An improved device for removing ionic pollutants from wastewater according to claim 5, characterized in that: A carrier discharge port (4) is provided between the water inlet (1) and the drug inlet. The discharge port (4) extends from the inner tube (9) to the outer tube (10) and has an angle of 45-60° with respect to the vertical.

7. An improved device for removing ionic pollutants from wastewater according to claim 1, characterized in that: The width of the circular baffle (5) is 50-100 mm.

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