Ultraviolet oxidation combined sewage treatment device

Abstract

The utility model relates to an ultraviolet oxidation combined sewage treatment device which comprises a dosing tank, a water distribution tank, a treatment tank and a water outlet tank which are connected in sequence, the bottom of the dosing tank is communicated with the upper part of the water distribution tank, and the dosing tank is used for inputting an oxidizing agent added into the dosing tank into the water distribution tank; the treatment pond comprises a pipeline area, a reaction area and a sludge hopper area from top to bottom, the lower part of the water distribution pond is communicated with the bottom of the reaction area and is used for feeding water into the reaction area, the top of the reaction area is communicated with the water outlet pond, and treated water is input into the water outlet pond; a plurality of far ultraviolet lamps are uniformly arranged in the reaction area and are used for performing photolysis treatment on new pollutants in sewage, a plurality of telescopic cleaning sleeves are arranged in the pipeline area, cleaning brushes are arranged on the inner walls of the bottoms of the cleaning sleeves, the positions of the cleaning sleeves and the far ultraviolet lamps are in one-to-one correspondence up and down, and when the cleaning sleeves extend, the bottoms of the cleaning sleeves can be sleeved outside the far ultraviolet lamps; and the cleaning brush is used for cleaning dirt on the outer side wall of the far ultraviolet lamp while descending along with the cleaning sleeve, so that the light energy transmittance is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and in particular relates to a device for treating sewage by ultraviolet oxidation. Background Art

[0002] With the development of sewage treatment technology, the discharge index of treated effluent is getting higher and higher. However, the sewage discharge standards at home and abroad generally limit the conventional pollutants such as COD, BOD, total nitrogen, total phosphorus, and SS. With the update of the formula of various industrial products or daily necessities and the development of sewage treatment technology, new pollutants such as antibiotics and endocrine disruptors will be introduced into the water. The new pollutants in sewage have potential risks to various organisms in the ecosystem, including humans, and have attracted the attention of researchers in the field. The treatment of the above-mentioned new pollutants is a problem faced by those skilled in the art. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the existing sewage treatment devices cannot effectively remove new pollutants (antibiotics, endocrine disruptors, etc.) in sewage.

[0004] The utility model provides a device for treating sewage by ultraviolet oxidation, comprising a dosing tank, a water distribution tank, a treatment tank and a water outlet tank connected in sequence, wherein the bottom of the dosing tank is connected to the upper part of the water distribution tank, and is used to input the oxidizing agent added to the dosing tank into the water distribution tank; the treatment tank comprises a pipeline area, a reaction area and a sludge hopper area from top to bottom, the lower part of the water distribution tank is connected to the bottom of the reaction area, and is used to input water into the reaction area, and the top of the reaction area is connected to the water outlet tank, and the treated water is input into the water outlet tank;

[0005] A number of far-ultraviolet lamps are evenly arranged in the reaction zone for photolysis treatment of new pollutants in sewage. A number of retractable cleaning sleeves are arranged in the pipeline zone. A cleaning brush is arranged on the inner wall of the bottom of the cleaning sleeve. The positions of the cleaning sleeve and the far-ultraviolet lamp correspond one by one. When the cleaning sleeve is extended, the bottom can be covered on the outside of the far-ultraviolet lamp. The cleaning brush cleans the dirt on the outer wall of the far-ultraviolet lamp while the cleaning sleeve descends, thereby improving the light energy transmittance.

[0006] Optionally, the UV-oxidation combined sewage treatment device is an integrated tank body, which is a cubic tank body as a whole, and vertical isolation walls are provided between the dosing tank and the water distribution tank, between the water distribution tank and the treatment tank, and between the treatment tank and the water outlet tank, for isolating each tank body in the overall tank body;

[0007] The dosing tank, water distribution tank, treatment tank and outlet tank are all square and are arranged in sequence along the length direction of the overall tank body of the ultraviolet oxidation combined sewage treatment device, and the top surface of each tank body is open and at the same height.

[0008] Optionally, at least one stirring device is provided in the dosing tank, and a branch water inlet pipe is provided on the side of the dosing tank for inputting raw water and sewage, and the oxidizing agent is poured into the dosing tank, and the stirring device stirs to promote the dispersion of the oxidizing agent in the sewage;

[0009] The height of the dosing tank is smaller than that of the water distribution tank, which is beneficial to improve the stirring effect in a centralized manner.

[0010] Optionally, the oxidizing agent is sodium percarbonate.

[0011] Optionally, a main water inlet pipe is provided on the side of the water distribution pool away from the treatment pool for inputting raw water and sewage into the water distribution pool, and the height of the medicine distribution pool is equal to the height of the treatment pool.

[0012] Optionally, the liquid level in the treatment pool reaches the top of the reaction zone, and the support frame in the reaction zone is used to support the far-ultraviolet lamp. The far-ultraviolet lamp is vertically arranged and connected to the support frame at the bottom. The top is free, and several far-ultraviolet lamps are distributed in a matrix form in the reaction zone.

[0013] Further optionally, the far-ultraviolet lamp has a quartz waterproof shell, and the transparent shell allows far-ultraviolet light to be emitted into the water in the reaction zone. An opening is provided at the bottom of the shell for loading the far-ultraviolet lamp. The wires of the far-ultraviolet lamp pass through a waterproof cover of the opening, and the wires are wrapped with a waterproof sheath. The wires extend along the support frame to the side wall of the treatment pool, then extend out of the treatment pool along the side wall, and then are connected to an external power supply to power the far-ultraviolet lamp.

[0014] Further optionally, the far-ultraviolet lamp is an excimer ultraviolet lamp capable of emitting light with a wavelength of 222 nm.

[0015] Optionally, a bracket is provided at the top of the pipeline area to support the top of the cleaning sleeve; the cleaning sleeve is a cylindrical corrugated tube, which is flexible and retractable; a telescopic device is provided above each cleaning sleeve, and the telescopic end of the telescopic device is connected to the outer side surface of the bottom of the cleaning sleeve through a plurality of ropes or support rods, thereby driving the bottom of the cleaning sleeve to move up and down.

[0016] Optionally, the sludge hopper area includes a plurality of conical hoppers, and the sludge produced by the reaction in the reaction area is precipitated and falls into the hoppers. A sludge discharge pipe is provided at the bottom of each hopper for discharging the sludge accumulated in the hopper.

[0017] The device for treating sewage by ultraviolet oxidation combined with the utility model has the following beneficial effects:

[0018] (1) Use the oxidizing agent added in the dosing tank and the far ultraviolet lamp in the reaction zone to synergistically treat new pollutants in sewage and improve treatment efficiency;

[0019] (2) Contaminants are easily attached to the outer surface of the far-ultraviolet lamp in the reaction zone. Use a retractable cleaning brush to clean the dirt on the surface of the far-ultraviolet lamp by moving the bottom of the cleaning sleeve up and down. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the device for treating sewage by ultraviolet oxidation;

[0021] Figure 2 for Figure 1 Schematic diagram of the A-A' cross-sectional view.

[0022] In the attached drawings, 1-dosing tank, 2-water distribution tank, 3-treatment tank, 4-water outlet tank, 5-pipeline area, 6-reaction area, 7-sludge hopper area, 8-far ultraviolet lamp, 9-cleaning sleeve, 10-cleaning brush, 11-main water inlet pipe, 12-branch water inlet pipe, 13-support frame, 14-housing, 15-mud hopper, 16-bracket, 17-telescopic device. DETAILED DESCRIPTION

[0023] This embodiment provides a device for treating wastewater by ultraviolet oxidation. Figure 1-Figure 2 As shown, it includes a dosing tank 1, a water distribution tank 2, a treatment tank 3 and a water outlet tank 4 connected in sequence. The bottom of the dosing tank 1 is connected to the upper part of the water distribution tank 2, which is used to input the oxidizing agent added to the dosing tank 1 into the water distribution tank 2; the treatment tank 3 includes a pipeline area 5, a reaction area 6 and a sludge hopper 15 area 7 from top to bottom, the lower part of the water distribution tank 2 is connected to the bottom of the reaction area 6, which is used to feed water into the reaction area 6, and the top of the reaction area 6 is connected to the water outlet tank 4, and the treated water is input into the water outlet tank 4;

[0024] A plurality of far-ultraviolet lamps 8 are evenly arranged in the reaction zone 6 for photolysis treatment of new pollutants in the sewage. A plurality of retractable cleaning sleeves 9 are arranged in the pipeline zone 5. A cleaning brush 10 is arranged on the inner wall at the bottom of the cleaning sleeve 9. The positions of the cleaning sleeve 9 and the far-ultraviolet lamp 8 correspond one to another. When the cleaning sleeve 9 is extended, the bottom can be sleeved on the outside of the far-ultraviolet lamp 8. The cleaning brush 10 cleans the dirt on the outer shell of the far-ultraviolet lamp 8 while the cleaning sleeve 9 descends, thereby improving the light energy transmittance.

[0025] Optionally, the UV-oxidation combined sewage treatment device is an integrated tank body, which is a cubic tank body as a whole, and vertical isolation walls are provided between the dosing tank 1 and the water distribution tank 2, between the water distribution tank 2 and the treatment tank 3, and between the treatment tank 3 and the water outlet tank 4, for isolating each tank body in the overall tank body;

[0026] The dosing tank 1, the water distribution tank 2, the treatment tank 3 and the outlet tank 4 are all square and arranged in sequence along the length direction of the overall tank body of the ultraviolet oxidation combined sewage treatment device, and the top surface of each tank body is open and at the same height. The integrated design of the ultraviolet oxidation combined sewage treatment device is not only integrated and intensive, convenient for centralized equipment layout, but also saves land.

[0027] Optionally, at least one stirring device is provided in the dosing tank 1, and a branch water inlet pipe 12 is provided on the side of the dosing tank 1 for inputting raw water and sewage, and the oxidizing agent is poured into the dosing tank 1, and the stirring device stirs to promote the dispersion of the oxidizing agent in the sewage;

[0028] The height of the dosing tank 1 is smaller than that of the water distribution tank 2 , which is beneficial to improve the stirring effect in a centralized manner; a valve is provided at the water outlet at the bottom of the dosing tank 1 to control the sewage in the dosing tank 1 to enter the water distribution tank 2 .

[0029] Optionally, the oxidizing agent is sodium percarbonate, which is an addition compound of hydrogen peroxide and sodium carbonate and can effectively remove new pollutants in sewage.

[0030] Optionally, a main water inlet pipe 11 is provided on the side of the water distribution pool 2 away from the treatment pool 3, which is used to input raw water and sewage into the water distribution pool 2, and the height of the water distribution pool is equal to the height of the treatment pool 3; a valve is provided at the water outlet at the bottom of the water distribution pool 2, which is used to control the sewage in the water distribution pool 2 to enter the treatment pool 3.

[0031] A small portion of the raw sewage enters the dosing tank 1 through the branch water inlet pipe 12, and most of it enters the water distribution tank 2 through the main water inlet pipe 11. The sewage containing the oxidizing agent in the dosing tank 1 is input into the water distribution tank 2 and mixed with most of the raw sewage, which is beneficial to the uniform distribution of the oxidizing agent in the sewage.

[0032] Optionally, the liquid level in the treatment pool 3 reaches the top of the reaction zone 6, and the support frame 13 in the reaction zone 6 is used to support the far-ultraviolet lamp 8. The far-ultraviolet lamp 8 is vertically arranged, and the bottom is connected to the support frame 13, and the top is free. Several far-ultraviolet lamps 8 are distributed in the reaction zone 6 in a matrix form.

[0033] Further optionally, the far-ultraviolet lamp 8 has a quartz waterproof shell 14, and the transparent shell 14 allows far-ultraviolet light to be emitted into the water in the reaction zone 6. The bottom of the shell 14 is provided with an opening for loading the far-ultraviolet lamp 8. The wires of the far-ultraviolet lamp 8 pass through the waterproof cover of the opening, and the wires are wrapped with a waterproof sheath. The wires extend along the support frame 13 to the side wall of the treatment pool 3, and then extend out of the treatment pool 3 along the side wall, and then are connected to an external power supply to power the far-ultraviolet lamp 8.

[0034] Further optionally, the far-ultraviolet lamp 8 is an excimer ultraviolet lamp capable of emitting light with a wavelength of 222 nm.

[0035] Traditional ultraviolet light sources use low-pressure mercury lamps with a wavelength of 254nm. The utilization efficiency of photons and chemicals is low, and they contain mercury, which may cause mercury pollution. The light they emit is very irritating to human eyes. Far-ultraviolet lamps8 are less harmful to humans, require almost no stabilization time before use, and will not cause subsequent mercury pollution. The photon energy at 222nm (539kJeinstein -1 ) is higher than the photon energy at 254nm (471kJ einstein -1 ), which can increase the direct photolysis rate of organic pollutants. In addition, in the advanced oxidation process, many oxidants have higher molar absorption coefficients and / or quantum yields at 222nm, which is conducive to these oxidants to produce higher concentrations of free radicals, thereby improving the degradation efficiency of pollutants.

[0036] Optionally, a bracket 16 is provided at the top of the pipeline area 5 to support the top of the cleaning sleeve 9; the cleaning sleeve 9 is a cylindrical corrugated pipe, which is flexible and retractable; a telescopic device 17 is provided above each cleaning sleeve 9, and the telescopic end of the telescopic device 17 is connected to the outer side of the bottom of the cleaning sleeve 9 through a plurality of ropes or support rods, thereby driving the bottom of the cleaning sleeve 9 to move up and down. The telescopic device 17 can be a hydraulic cylinder.

[0037] Further optionally, the cleaning brush 10 is a bristle evenly and densely distributed on the inner wall of the bottom of the cleaning sleeve 9, the root of the bristle is fixed on the cleaning sleeve 9, and the top tip protrudes into the inside of the cleaning sleeve 9. When the bottom of the cleaning sleeve 9 moves up and down along the far-ultraviolet lamp 8, the bristle can clean the housing 14 of the far-ultraviolet lamp 8. The dirt brushed off is washed away by the water flow in the reaction zone 6, and the dirt remaining in the cleaning sleeve 9 can also be washed clean by the water flow when the cleaning sleeve 9 moves up.

[0038] Optionally, the sludge hopper 15 zone 7 includes a plurality of conical hoppers 15 , and the sludge produced by the reaction in the reaction zone 6 is precipitated and falls into the hopper 15 . A sludge discharge pipe is provided at the bottom of each hopper 15 for discharging the sludge accumulated in the hopper 15 .

[0039] Optionally, an overflow outlet is provided at the top of the reaction zone 6 to allow the processed water at the top of the reaction zone 6 to overflow into the outlet pool 4 , and a drain pipe is provided on the side of the outlet pool 4 to discharge the clean water in the outlet pool 4 .

Claims

1. A device for treating sewage by ultraviolet oxidation, characterized in that: It includes a dosing tank, a water distribution tank, a treatment tank and a water outlet tank connected in sequence. The bottom of the dosing tank is connected to the upper part of the water distribution tank, so as to input the oxidizing agent added to the dosing tank into the water distribution tank; the treatment tank includes a pipeline area, a reaction area and a sludge hopper area from top to bottom. The lower part of the water distribution tank is connected to the bottom of the reaction area for water to enter the reaction area. The top of the reaction area is connected to the water outlet tank to input the treated water into the water outlet tank; A number of far-ultraviolet lamps are evenly arranged in the reaction zone for photolysis treatment of new pollutants in sewage. A number of retractable cleaning sleeves are arranged in the pipeline zone. A cleaning brush is arranged on the inner wall of the bottom of the cleaning sleeve. The positions of the cleaning sleeve and the far-ultraviolet lamp correspond one by one. When the cleaning sleeve is extended, the bottom can be covered on the outside of the far-ultraviolet lamp. The cleaning brush cleans the dirt on the outer wall of the far-ultraviolet lamp while the cleaning sleeve descends, thereby improving the light energy transmittance.

2. The device for treating sewage by ultraviolet oxidation according to claim 1, characterized in that: The device for treating sewage by ultraviolet oxidation is an integrated tank body, which is a cubic tank body as a whole. Vertical isolation walls are provided between the dosing tank and the water distribution tank, between the water distribution tank and the treatment tank, and between the treatment tank and the water outlet tank, so as to isolate each tank body in the overall tank body. The dosing tank, water distribution tank, treatment tank and outlet tank are all square and are arranged in sequence along the length direction of the overall tank body of the ultraviolet oxidation combined sewage treatment device, and the top surface of each tank body is open and at the same height.

3. The device for treating sewage by ultraviolet oxidation according to claim 2, characterized in that: At least one stirring device is provided in the dosing tank, and a water inlet pipe is provided on the side of the dosing tank for inputting raw water and sewage. The oxidizing agent is poured into the dosing tank, and the stirring device stirs to promote the dispersion of the oxidizing agent in the sewage. The height of the dosing tank is smaller than that of the water distribution tank, which is beneficial to improve the stirring effect in a centralized manner.

4. The device for treating sewage by ultraviolet oxidation according to claim 1, characterized in that: The oxidizing agent is sodium percarbonate.

5. The device for treating sewage by ultraviolet oxidation according to claim 2, characterized in that: A main water inlet pipe is provided on the side of the water distribution pool away from the treatment pool for inputting raw water and sewage into the water distribution pool. The height of the medicine distribution pool is equal to that of the treatment pool.

6. The device for treating sewage by ultraviolet oxidation according to claim 1, characterized in that: The liquid level in the treatment pool reaches the top of the reaction zone. The support frame in the reaction zone is used to support the far-ultraviolet lamp. The far-ultraviolet lamp is vertically arranged and connected to the support frame at the bottom. The top is free. Several far-ultraviolet lamps are distributed in the reaction zone in a matrix form.

7. The device for treating sewage by ultraviolet oxidation according to claim 6, characterized in that: The far-ultraviolet lamp has a quartz waterproof housing, and the transparent housing allows the far-ultraviolet light to be emitted into the water in the reaction zone; An opening is provided at the bottom of the shell, and the wires of the far-ultraviolet lamp pass through the waterproof cover of the opening. The wires are wrapped with a waterproof sheath. The wires extend along the support frame to the side wall of the treatment pool, then extend out of the treatment pool along the side wall, and then connect to an external power supply to power the far-ultraviolet lamp.

8. The device for treating sewage by ultraviolet oxidation according to claim 1, characterized in that: The far ultraviolet lamp is an excimer ultraviolet lamp capable of emitting light with a wavelength of 222 nm.

9. The device for treating sewage by ultraviolet oxidation according to claim 6, characterized in that: A bracket is provided on the top of the pipeline area to support the top of the cleaning sleeve; the cleaning sleeve is a cylindrical corrugated pipe, which is flexible and retractable; a telescopic device is provided on the top of each cleaning sleeve, and the telescopic end of the telescopic device is connected to the outer side surface of the bottom of the cleaning sleeve through a plurality of ropes or support rods, thereby driving the bottom of the cleaning sleeve to move up and down.

10. The device for treating sewage by ultraviolet oxidation according to claim 1, characterized in that: The sludge hopper area includes a plurality of conical hoppers. The sludge produced by the reaction in the reaction area is precipitated and falls into the hoppers. A sludge discharge pipe is provided at the bottom of each hopper for discharging the sludge accumulated in the hopper.

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