Illumination type sewage purification treatment device

Abstract

The utility model provides an illumination type sewage purification treatment device, and relates to the technical field of sewage treatment devices, the illumination type sewage purification treatment device comprises a treatment box, a liquid inlet, an inclined tube filler layer, a UV illumination tube I, a UV illumination tube II, a water outlet tank and a sludge discharge pipe, the bottom of the treatment box is a sewage collection tank, the liquid inlet is arranged on the wall of the treatment box on one side above the sewage collection tank, and the inclined tube filler layer is arranged on the wall of the treatment box on the other side above the sewage collection tank. The liquid inlet is provided with a Fenton reagent feeding port, the filler layers are uniformly mounted in the treatment box above the liquid inlet, the UV illumination tube I and the UV illumination tube II are respectively mounted in the treatment box above and below the inclined tube filler layer, the water outlet tank is arranged on the opposite side of the liquid inlet through the overflow partition plate, the sludge discharge pipe is mounted in the sludge collection tank, and the sludge discharge pipe is connected with the sludge collection tank through the overflow partition plate. The device can solve the problems that the utilization rate of H2O2 is not high, and accumulation of substances such as Fe < 3 + > and the like can continuously cause side reaction and hinder forward reaction of the device in a traditional Fenton-process sewage purification treatment device.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment devices, and particularly relates to a light-type sewage purification and treatment device. Background Technique

[0002] A large amount of industrial wastewater discharged in industries such as chemical industry, light textile, pharmaceutical, and food has the characteristics of various types, complex components, high COD (chemical oxygen demand) concentration, poor biodegradability, toxicity, and harmfulness. If effective control and treatment are not carried out, it will surely cause very serious pollution and damage to the environment.

[0003] The Fenton method has unique advantages in treating refractory organic pollutants. H2O2 decomposes to generate ·OH under the catalytic action of Fe 2+ Its oxidation potential reaches 2.8V. It oxidizes and decomposes organic substances into small molecules through electron transfer and other ways. At the same time, Fe 2+ is oxidized to Fe 3+ to produce coagulation precipitation, removing a large amount of organic substances. The Fenton reagent has two functions of oxidation and coagulation in water treatment.

[0004] The traditional Fenton method sewage purification and treatment device has the following problems: the utilization rate of H2O2 is not high, and the accumulation of substances such as Fe 3+ will continuously trigger side reactions and hinder its own forward reaction. Therefore, this application proposes a light-type sewage purification and treatment device. Content of the Utility Model

[0005] In order to overcome the problems in the background technique, the utility model provides a light-type sewage purification and treatment device, which solves the problems that the traditional Fenton method sewage purification and treatment device has a low utilization rate of H2O2, and the accumulation of substances such as Fe 3+ will continuously trigger side reactions and hinder its own forward reaction.

[0006] A light-type sewage purification and treatment device includes a treatment tank, a liquid inlet, an inclined tube packing layer, a UV light tube I, a UV light tube II, a water outlet tank, and a sludge discharge pipe. The bottom of the treatment tank is a sewage collection tank. The liquid inlet is arranged on the wall of the treatment tank on one side above the sewage collection tank, and a Fenton reagent dosing port is arranged on the liquid inlet. The packing layer is evenly installed in the treatment tank above the liquid inlet. The UV light tube I and the UV light tube II are respectively installed in the treatment tank above and below the inclined tube packing layer. The water outlet tank is arranged on the opposite side of the liquid inlet through an overflow partition board, and the sludge discharge pipe is installed in the sewage collection tank.

[0007] Furthermore, the UV light tube I is symmetrically arranged in the treatment tank in the areas on both sides of the liquid inlet, and the UV light tube II is evenly installed under the cover plate of the treatment tank and extends into the treatment tank.

[0008] Further, a reflective layer is provided on the bottom of the cover plate and the inner wall of the treatment tank.

[0009] Further, a dissolved air inlet pipe is connected to the liquid inlet, and a reflux pipe is connected to the water outlet in the water outlet tank. The reflux pipe is connected to a dissolved air tank through a pump, and the dissolved air tank is connected to an air pump and the dissolved air inlet pipe through an air inlet interface and a liquid outlet interface respectively.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] This application is provided with a UV light tube 1, a UV light tube 2 and a dissolved air inlet pipe. The dissolved air can evenly mix the sewage and Fenton reagent. There is a synergistic effect between ultraviolet light and Fe2+ on the catalytic decomposition of H202. Under the excitation of high-intensity light quanta, Fe3+ and its complexes can be reconverted into Fe2+, realizing the continuous Fe2+ / Fe3+ cycle. The Fe2+ generated by photoreduction continues to react with H202, increasing the yield of -OH and accelerating the decomposition of organic matter, solving the problems existing in the traditional Fenton method sewage purification treatment device, such as the low utilization rate of H2O2, the accumulation of substances such as Fe 3+ and other substances, which will continuously trigger side reactions and hinder its own forward reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for the description of the embodiments are described.

[0013] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0014] Figure 2 It is a schematic diagram of the bottom structure of the present utility model;

[0015] Figure 3 It is a schematic diagram of the internal structure of the present utility model.

[0016] 1 - treatment tank, 11 - sewage collection tank, 12 - overflow partition, 2 - liquid inlet, 21 - Fenton reagent dosing port, 22 - dissolved air inlet pipe, 3 - inclined tube packing layer, 4 - UV light tube 1, 5 - UV light tube 2, 6 - water outlet tank, 61 - reflux pipe, 7 - sludge discharge pipe, 8 - dissolved air tank, 81 - air inlet interface, 82 - liquid outlet interface, 9 - cover plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] In order to make the purpose, technical solutions and beneficial effects of the present utility model clearer, the preferred embodiments of the present utility model will be described in detail below with reference to the drawings for the convenience of those skilled in the art to understand.

[0018] The present utility model proposes a light-type sewage purification treatment device. Refer toFigures 1 - 3 , a light - type sewage purification and treatment device, comprising a treatment tank 1, a liquid inlet 2, an inclined tube packing layer 3, a first UV light tube 4, a second UV light tube 5, an outlet trough 6 and a sludge discharge pipe 7. The bottom of the treatment tank 1 is a sewage collection tank 11. The liquid inlet 2 is arranged on the wall of the treatment tank 1 on one side above the sewage collection tank 11. A Fenton reagent dosing port 21 is arranged on the liquid inlet 2. The packing layer 3 is evenly installed in the treatment tank 1 above the liquid inlet 2. The first UV light tube 4 and the second UV light tube 5 are respectively installed in the treatment tank 1 above and below the inclined tube packing layer 3. The outlet trough 6 is arranged on the opposite side of the liquid inlet 2 through an overflow partition 12. The sludge discharge pipe 7 is installed in the sewage collection tank 11.

[0019] Sewage and Fenton reagent can enter the treatment tank 1 through the liquid inlet 2 and the Fenton reagent dosing port 21. In the treatment tank 1, organic pollutants are treated through the reaction of the Fenton reagent and sewage. The ultraviolet rays generated by the first UV light tube 4 have a synergistic effect on the catalytic decomposition of H2O2. Fe3+ and its complexes can be reconverted into Fe2+, realizing a continuous Fe2+ / Fe3+ cycle. The Fe2+ generated by photoreduction continues to react with H2O2, increasing the yield of -OH and accelerating the decomposition of organic matter. The treated sewage passes upward through the inclined tube packing layer 3 for filtration. The sediment deposited in the sewage collection tank 11 can be discharged by the sludge discharge pipe 7. The sewage above the inclined tube packing layer 3 continues to undergo advanced oxidation with H2O2 under the irradiation of the second UV light tube 5 to make full use of H2O2. The treated sewage enters the outlet trough 6 and is discharged through the outlet pipe.

[0020] Refer to Figures 1 - 3 , the first UV light tube 4 is symmetrically arranged in the treatment tank 1 in the areas on both sides of the liquid inlet 2. The second UV light tube 5 is evenly installed under the cover plate 9 of the treatment tank 1 and extends into the treatment tank 1, capable of uniformly irradiating the sewage.

[0021] Refer to Figures 1 - 3 , a reflective layer is arranged on the bottom of the cover plate 9 and the inner wall of the treatment tank 1, making the light in the treatment tank 1 more sufficient and reducing the light - dead corners.

[0022] Refer to Figures 1 - 3 , a dissolved - air inlet pipe 22 is connected to the liquid inlet 2. A reflux pipe 61 is connected to the outlet of the outlet trough 6. The reflux pipe 61 is connected to a dissolved - air tank 8 through a pump. The dissolved - air tank 8 is respectively connected to an air pump and the dissolved - air inlet pipe 22 through an air inlet interface 81 and a liquid outlet interface 82. Dissolved air can make the sewage and Fenton reagent evenly mixed and at the same time prevent sediment from accumulating on the first UV light tube 4.

[0023] Working process:

[0024] Turn on the UV light tube 14 and the UV light tube 25. Pump the sewage and the Fenton reagent into the treatment tank 1 through the sewage pump and the chemical dosing pump. Under the illumination of the UV light tube 1, the ultraviolet rays and the Fenton reagent react synergistically, increasing the production rate of -OH and accelerating the decomposition of organic matter. The treated sewage passes upward through the inclined tube packing layer 3, and the sludge in the sludge collection tank 11 is discharged through the sludge discharge pipe 7. The sewage is secondarily treated under the irradiation of the UV light tube 25 above the inclined tube packing layer 3, and the treated sewage enters the water outlet tank 6 and is discharged through the water outlet pipe.

[0025] The above is only the preferred specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. A light irradiation type sewage purification and treatment device, characterized in that: It includes a treatment tank (1), a liquid inlet (2), an inclined tube packing layer (3), a first UV light tube (4), a second UV light tube (5), a water outlet tank (6) and a sludge discharge pipe (7). The bottom of the treatment tank (1) is a sewage collection tank (11). The liquid inlet (2) is arranged on the wall of the treatment tank (1) on one side above the sewage collection tank (11). A Fenton reagent dosing port (21) is arranged on the liquid inlet (2). The packing layer (3) is evenly installed in the treatment tank (1) above the liquid inlet (2). The first UV light tube (4) and the second UV light tube (5) are respectively installed in the treatment tank (1) above and below the inclined tube packing layer (3). The water outlet tank (6) is arranged on the opposite side of the liquid inlet (2) through an overflow partition plate (12). The sludge discharge pipe (7) is installed in the sewage collection tank (11).

2. The light-based sewage purification and treatment device according to claim 1, wherein: The first UV light tube (4) is symmetrically arranged in the treatment tank (1) in the areas on both sides of the liquid inlet (2). The second UV light tube (5) is evenly installed below the cover plate (9) of the treatment tank (1) and extends into the treatment tank (1).

3. The light-exposed sewage purification and treatment device according to claim 2, characterized in that: A reflective layer is arranged on the bottom of the cover plate (9) and the inner wall of the treatment tank (1).

4. The light-based sewage purification and treatment device according to claim 1, wherein: A dissolved air inlet pipe (22) is connected to the liquid inlet (2). A reflux pipe (61) is connected to the water outlet on the water outlet tank (6). The reflux pipe (61) is connected to a dissolved air tank (8) through a pump. The dissolved air tank (8) is respectively connected to an air pump and the dissolved air inlet pipe (22) through an air inlet interface (81) and a liquid outlet interface (82).

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