Ultraviolet-peroxydisulfate-ozone combined advanced oxidation wastewater treatment device

Abstract

The utility model relates to the technical field of wastewater treatment, in particular to an ultraviolet-peroxydisulfate-ozone combined advanced oxidation wastewater treatment device which comprises a tank body, a sludge discharge port is formed in the bottom of the tank body, a sewage inlet and a clear water outlet are symmetrically formed in the center of the bottom end and the center of the top end of the tank body, and a medicine feeding port is formed in the top end of the tank body. After being added, the medicine and sewage entering from the lower portion form convection impact, an ultraviolet lamp which activates the medicine and has an oxidation effect on the sewage is arranged in the tank body, and an ozone feeding opening is further formed in the bottom end of the tank body. According to the scheme, medicines are activated through the ultraviolet lamp to generate sulfate free radicals and hydroxyl free radicals, the oxidation effect on sewage is achieved through cooperation with the oxidation and disinfection effects of ultraviolet rays, meanwhile, the further synergistic degradation effect is achieved through cooperation with ozone, and therefore the purification treatment requirement for high-concentration organic pollutants can be met; the processing efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of wastewater treatment, and in particular to a combined ultraviolet-persulfate-ozone advanced oxidation wastewater treatment device. Background Technology

[0002] Traditional wastewater treatment methods, such as biological treatment and physicochemical methods (sedimentation, filtration, adsorption, etc.), are gradually showing their limitations when faced with increasingly complex wastewater containing high concentrations of pollutants and high levels of recalcitrant organic matter.

[0003] Biological treatment primarily relies on the metabolic activity of microorganisms to decompose pollutants. However, for some organic compounds with biotoxicity and complex chemical structures, such as polycyclic aromatic hydrocarbons, pesticide residues, and certain industrial dyes, microorganisms struggle to effectively degrade them, significantly reducing treatment efficiency. Furthermore, biological treatment processes are highly sensitive to environmental conditions; fluctuations in factors such as temperature, pH, and dissolved oxygen can affect microbial activity, thereby impacting treatment efficiency and the stability of effluent quality.

[0004] Physicochemical methods such as precipitation and filtration are mainly used to remove suspended particulate matter from wastewater, but their ability to remove dissolved organic pollutants is limited. Although adsorption methods can adsorb some organic matter through adsorbents (such as activated carbon), adsorbents are easily saturated and require frequent regeneration or replacement, which is costly and may cause secondary pollution during the regeneration process.

[0005] Against this backdrop, advanced oxidation technologies emerged. Advanced oxidation technologies work by generating highly oxidizing free radicals (such as sulfate radicals, SO4·4·4). - It uses hydroxyl radicals (·OH) to oxidize and degrade pollutants in wastewater. It has strong oxidizing power, fast reaction rate, and no selectivity. It can effectively decompose various recalcitrant organic matter and finally mineralize it into harmless substances such as carbon dioxide, water, and inorganic ions.

[0006] However, these treatment methods all have certain limitations when used independently. For example, ozone oxidation alone has strong selectivity, low oxidation efficiency, and high operating costs; ultraviolet (UV) radiation alone and PDS oxidation alone cannot meet the requirements for degrading high-concentration organic pollutants in terms of oxidation rate and efficiency. Therefore, to solve the above problems, this application provides a combined ultraviolet-persulfate-ozone advanced oxidation wastewater treatment device. Utility Model Content

[0007] To address the limitations of existing independent wastewater treatment methods, this application provides a combined ultraviolet-persulfate-ozone advanced oxidation wastewater treatment device.

[0008] This application provides a combined ultraviolet-persulfate-ozone advanced oxidation wastewater treatment device, comprising a tank, a sludge discharge port at the bottom of the tank, a wastewater inlet and a clean water outlet symmetrically arranged at the bottom and top of the tank, a chemical dosing port at the top of the tank, where the added chemical forms a convective impact with the wastewater entering from below, an ultraviolet lamp inside the tank that activates the chemical and oxidizes the wastewater itself, and an ozone inlet at the bottom of the tank.

[0009] By activating the pharmaceuticals with ultraviolet lamps to generate sulfate and hydroxyl radicals, combined with the oxidizing and disinfecting effects of ultraviolet light, the wastewater is oxidized. Furthermore, ozone is added to achieve a synergistic degradation effect, thus meeting the purification requirements for high-concentration organic pollutants and improving treatment efficiency.

[0010] Preferably, the drug added through the drug dosing port is persulfate.

[0011] Preferably, the drug dispensing port is equipped with a valve.

[0012] Preferably, an ozone generator is installed on the outside of the tank, and the ozone generator is connected to the bottom of the tank through a connecting pipe.

[0013] Preferably, a three-way valve is provided at the clean water outlet of the tank. One outlet of the three-way valve is connected to the outside, and the other outlet is connected to the bottom of the tank through a return pipe.

[0014] Preferably, a motor is provided on the top of the tank, and the output end of the motor is fixedly connected to a stirring blade extending into the tank.

[0015] Preferably, the ultraviolet lamp is installed inside the tank using a spiral structure.

[0016] In summary, this application includes the following beneficial technical effects:

[0017] The drug persulfate (PDS) is activated by ultraviolet light to generate sulfate free radicals SO4· - The ultraviolet light, along with hydroxyl radicals (·OH) and its own oxidizing and disinfecting properties, works together to oxidize wastewater. Simultaneously, an ozone generator introduces ozone into the wastewater, further enhancing the synergistic degradation effect. This allows for the purification of high-concentration organic pollutants, significantly improving treatment efficiency compared to existing independent treatment methods. The device also includes a reflux system to circulate the wastewater, ensuring complete treatment and reaction, and further enhancing the overall treatment effect. Attached Figure Description

[0018] Figure 1It is the isometric drawing in Embodiment 1 of this application;

[0019] Figure 2 This is a partial cross-sectional view of Embodiment 1 of this application.

[0020] Explanation of reference numerals in the attached diagram: 1. Tank body; 11. Sludge discharge port; 2. Wastewater inlet; 3. Chemical dosing port; 31. Valve; 4. Motor; 41. Agitator blades; 5. Ozone generator; 51. Connecting pipe; 6. Return pipe; 61. Three-way valve; 7. Clean water outlet; 8. Ultraviolet lamp; 9. Return pump. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1 - Figure 2 This application will be described in further detail.

[0022] Example 1:

[0023] A combined ultraviolet-persulfate-ozone advanced oxidation wastewater treatment device, referring to Figure 1 - Figure 2 The tank 1 has a sludge discharge port 11 at the bottom, and a sewage inlet 2 and a clean water outlet 7 symmetrically arranged at the bottom and top of the tank 1. The top of the tank 1 has a chemical dosing port 3, which is equipped with a valve 31. The chemical dosing port 3 is filled with persulfate (PDS). After the chemical is added, it forms a convection impact with the sewage entering below. The tank 1 is equipped with an ultraviolet lamp 8 that activates the chemical and oxidizes the sewage itself. The ultraviolet lamp 8 is installed in the tank 1 with a spiral structure to improve the utilization rate of light. The bottom of the tank 1 also has an ozone inlet, and the outside of the tank 1 is equipped with an ozone generator 5. The ozone generator 5 can be an existing technology product, such as the "Qida QD-DA type ozone generator". The ozone generator 5 is connected to the bottom of the tank 1 through a connecting pipe 51. An air pump and a solenoid valve can be installed on the connecting pipe 51 to control the time and amount of ozone added.

[0024] A three-way valve 61 is installed at the clean water outlet 7 of the tank body 1. One outlet of the three-way valve 61 is connected to the outside, and the other outlet is connected to the bottom of the tank body 1 through the return pipe 6. A return pump 9 is installed on the return pipe 6 to drive the sewage to be treated to circulate. During the treatment process, the sewage entering from the top continues to enter the bottom of the tank body 1 from the top under the action of the return pipe 6, thereby realizing the circulation treatment of the sewage inside the tank body 1 to ensure complete treatment.

[0025] A motor 4 is installed on the top of the tank 1, and the output end of the motor 4 is fixedly connected to a stirring blade 41 extending into the tank 1. The stirring blade 41 rotates under the drive of the motor 4, which can further improve the mixing effect of sewage, PDS and ozone inside the tank.

[0026] UV-activated PDS generates sulfate and hydroxyl radicals, which, along with ozone and ultraviolet light, are then used for advanced oxidation treatment of wastewater. Ozone has a strong oxidizing effect on organic matter, and the free radicals generated by PDS activation can effectively degrade recalcitrant organic matter. UV light, while activating PDS, also plays an oxidizing role. The convection impact design can solve the problem of uneven contact between the reaction mixture and the reagents.

[0027] The foregoing description, with reference to preferred embodiments, illustrates an exemplary embodiment of the ultraviolet-persulfate-ozone combined advanced oxidation wastewater treatment device provided by this disclosure. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the spirit of this disclosure, and various combinations can be made to the various technical features and structures proposed in this disclosure without exceeding the protection scope of this disclosure, which is determined by the appended claims.

Claims

1. A combined ultraviolet-persulfate-ozone advanced oxidation wastewater treatment device, comprising a tank (1), a sludge discharge port (11) at the bottom of the tank (1), and a wastewater inlet (2) and a clean water outlet (7) symmetrically arranged at the bottom and top of the tank (1), characterized in that: The top of the tank (1) is provided with a drug dosing port (3). After the drug is added, it forms a convection impact with the sewage entering below. The tank (1) is provided with an ultraviolet lamp (8) that activates the drug and oxidizes the sewage. The bottom of the tank (1) is also provided with an ozone inlet.

2. The wastewater treatment device according to claim 1, characterized in that: The drug added through the drug addition port (3) is persulfate.

3. The wastewater treatment device according to claim 2, characterized in that: A valve (31) is provided on the drug dispensing port (3).

4. The wastewater treatment device according to claim 1, characterized in that: An ozone generator (5) is installed outside the tank (1), and the ozone generator (5) is connected to the bottom of the tank (1) through a connecting pipe (51).

5. The wastewater treatment device according to claim 1, characterized in that: A three-way valve (61) is provided at the clean water outlet (7) of the tank (1). One outlet of the three-way valve (61) is connected to the outside, and the other outlet is connected to the bottom of the tank (1) through the return pipe (6).

6. The wastewater treatment device according to claim 1, characterized in that: A motor (4) is provided on the top of the tank (1), and the output end of the motor (4) is fixedly connected to a stirring blade (41) extending into the tank (1).

7. The wastewater treatment device according to claim 1, characterized in that: The ultraviolet lamp (8) is installed inside the tank (1) in a spiral structure.

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