Ultrasonic electro-Fenton wastewater treatment integrated device

Abstract

The utility model provides an ultrasonic electro-Fenton wastewater treatment integrated device, which relates to the technical field of industrial wastewater treatment and comprises a tank body, an electro-Fenton reaction tank, a primary reaction tank and a PH regulating tank for regulating the PH value, the primary reaction tank, the PH regulating tank and the electro-Fenton reaction tank are sequentially arranged in the tank body in a communicating manner, a water inlet is formed in the upper part of the primary reaction tank, an iron-carbon filler plate is arranged in the primary reaction tank, a first spacing plate is arranged between the primary reaction tank and the PH regulating tank, a second spacing plate is arranged between the PH regulating tank and the electro-Fenton reaction tank, and the first spacing plate and the second spacing plate are arranged in parallel. The electro-Fenton reaction tank is provided with a water outlet; a positive electrode bar and a negative electrode bar are arranged in the electro-Fenton reaction tank, an ultrasonic generator is arranged below the negative electrode bar, and an aerator is arranged below the ultrasonic generator. The electro-Fenton treatment device solves the problem of low Fenton reaction rate in the electro-Fenton treatment device in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial wastewater treatment, in particular to an ultrasonic electric Fenton wastewater treatment integrated device. Background Art

[0002] Wastewater must be treated and can only be discharged or reused after it meets the discharge standards to prevent environmental pollution and save resources. The electro-Fenton method continuously produces Fe2+ and H2O2 through electrochemical action, and the Fenton reaction produces active hydrogen radicals. The generated hydrogen radicals have high oxidation ability and can directly oxidize organic matter in wastewater, causing the organic molecules to continuously break, thereby achieving the purpose of degrading and cleaning wastewater. The electro-Fenton method has the advantages of strong oxidation ability and low energy consumption, and is considered to be an environmentally friendly treatment method.

[0003] A common electro-Fenton wastewater treatment device is equipped with an electro-Fenton reaction device, a pH adjustment tank and a high-efficiency sedimentation tank. It has a simple structure and high efficiency in removing organic matter. However, the aeration efficiency of the device is low, resulting in a low H2O2 generation rate, which in turn affects the Fenton reaction rate. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an ultrasonic electro-Fenton wastewater treatment integrated device, which solves the problem of low Fenton reaction rate in the electro-Fenton treatment device in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An integrated ultrasonic electro-Fenton wastewater treatment device comprises: a cell body, an electro-Fenton reaction cell, a primary reaction cell and a pH regulating cell for regulating pH value;

[0007] The primary reaction tank, the pH regulating tank and the electric Fenton reaction tank are sequentially connected and arranged in the tank body, a water inlet is arranged above the primary reaction tank, an iron-carbon filler plate is arranged in the primary reaction tank, a first partition plate is arranged between the primary reaction tank and the pH regulating tank, a second partition plate is arranged between the pH regulating tank and the electric Fenton reaction tank, and the electric Fenton reaction tank is provided with a water outlet;

[0008] A positive electrode rod and a negative electrode rod are arranged in the electric-Fenton reaction tank, an ultrasonic generator is arranged below the negative electrode rod, and an aerator is arranged below the ultrasonic generator.

[0009] Preferably, two iron-carbon filler plates are provided, and the two iron-carbon filler plates are arranged from top to bottom.

[0010] Preferably, a filter screen plate is provided above the upper iron-carbon filler plate.

[0011] Preferably, a feeding port is provided above the pH adjustment tank.

[0012] Preferably, a first channel is provided at the lower end of the first partition plate, a second channel is provided below the second partition plate, a third partition plate is vertically arranged in the pH regulating tank, and a third channel is provided at the upper end of the third partition plate.

[0013] The utility model has the following beneficial effects:

[0014] The utility model arranges a reaction tank to carry out primary treatment on wastewater, adjusts the pH value through a pH regulating tank, and then an ultrasonic generator and an aerator of an electric Fenton reaction tank assist in electrolytic catalytic oxidation reaction, so that high-concentration organic matter in the wastewater is completely decomposed, thereby improving the treatment rate.

[0015] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] In the above drawings: 1. tank body; 11. primary reaction tank; 110. filter screen; 12. PH adjustment tank; 120. feed port; 121. third partition plate; 13. electro-Fenton reaction tank; 2. water inlet; 3. first partition plate; 4. second partition plate; 5. water outlet; 61. positive electrode rod; 62. negative electrode rod; 7. ultrasonic generator; 8. aerator; 9. iron-carbon filler plate. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and functions achieved by the present invention clearer and easier to understand, the technical solutions in the present invention are further described below in conjunction with the accompanying drawings and embodiments.

[0019] See also Figure 1As shown, an ultrasonic electric-Fenton wastewater treatment integrated device comprises: a tank body 1, an electric-Fenton reaction tank 13, a primary reaction tank 11 and a PH regulating tank 12 for adjusting the pH value; the primary reaction tank 11, the PH regulating tank 12 and the electric-Fenton reaction tank 13 are sequentially connected and arranged in the tank body 1, a water inlet 2 is arranged above the primary reaction tank 11, an iron-carbon filler plate 9 is arranged in the primary reaction tank 11, a first partition plate 3 is arranged between the primary reaction tank 11 and the PH regulating tank 12, a second partition plate 4 is arranged between the PH regulating tank 12 and the electric-Fenton reaction tank 13, and the electric-Fenton reaction tank 13 is provided with a water outlet 5; a positive electrode rod 61 and a negative electrode rod 62 are arranged in the electric-Fenton reaction tank 13, an ultrasonic generator 7 is arranged below the negative electrode rod 62, and an aerator 8 is arranged below the ultrasonic generator 7.

[0020] The wastewater to be treated enters the primary reaction tank 11 from the water inlet 2. An iron-carbon filler plate 9 is arranged in the primary reaction tank 11. The iron-carbon filler plate 9 is formed by a uniform mixture of iron filings and activated carbon particles. When the iron filings and carbon particles are immersed in the acidic wastewater, a micro-electrolysis reaction occurs, so that the difficult-to-degrade substances in the wastewater will be decomposed into small molecular substances that are easy to treat, which is convenient for subsequent treatment; the pH adjustment tank 12 adjusts the pH of the wastewater treated in the early stage; in the electro-Fenton reaction tank 13, the Fe2+ remaining in the wastewater after electrolysis in the primary reaction tank 11 is fully oxidized, and an electrolytic catalytic oxidation reaction is carried out to completely decompose the high-concentration organic matter in the wastewater. The H2O2 reacting with Fe2+ in the electro-Fenton reaction pool 13 is generated on the surface of the negative electrode rod 62 through a reduction reaction. No external H2O2 is needed, the organic matter is completely degraded, and toxic intermediates are not easily generated. Oxygen is sprayed onto the surface of the negative electrode rod 62 through the aerator 8, and the oxygen molecules undergo a two-electron reduction reaction to form H2O2. An ultrasonic generator 7 is arranged above the aerator 8 to utilize the turbulent effect and interface effect of ultrasonic waves to enhance the oxygen mass transfer and dissolution process, thereby increasing the generation rate of H2O2 and thus improving the treatment efficiency.

[0021] Furthermore, two iron-carbon filler plates 9 are provided, and the two iron-carbon filler plates 9 are arranged from top to bottom. Wastewater will pass through the two iron-carbon filler plates 9 in sequence, thereby improving the treatment effect.

[0022] Furthermore, a filter screen plate 110 is provided above the upper iron-carbon filler plate 9, so as to filter out larger impurities in the wastewater.

[0023] Furthermore, a feed port 120 is provided above the pH adjustment tank 12 for adding a pH adjuster to adjust the acidity of the wastewater pH.

[0024] Furthermore, a first channel is provided at the lower end of the first partition plate 3, a second channel is provided below the second partition plate 4, a third partition plate 121 is vertically provided in the PH adjustment tank 12, and a third channel is provided at the upper end of the third partition plate 121. When the wastewater enters the PH adjustment tank 12, it will first pass through the first partition plate 3 and the third partition plate 121, and then pass between the third partition plate 121 and the second partition plate 4, so that the movement distance of the wastewater in the PH adjustment tank 12 becomes longer, and the wastewater is fully mixed and uniformly mixed in the PH adjustment tank 12.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An integrated ultrasonic electro-Fenton wastewater treatment device, characterized in that: include: A cell body (1), an electro-Fenton reaction cell (13), a primary reaction cell (11) and a pH adjustment cell (12) for adjusting the pH value; The primary reaction tank (11), the pH regulating tank (12) and the electro-Fenton reaction tank (13) are sequentially connected and arranged in a tank body (1); a water inlet (2) is arranged above the primary reaction tank (11); an iron-carbon filler plate (9) is arranged in the primary reaction tank (11); a first partition plate (3) is arranged between the primary reaction tank (11) and the pH regulating tank (12); a second partition plate (4) is arranged between the pH regulating tank (12) and the electro-Fenton reaction tank (13); and the electro-Fenton reaction tank (13) is provided with a water outlet (5); A positive electrode rod (61) and a negative electrode rod (62) are provided in the electro-Fenton reaction cell (13); an ultrasonic generator (7) is provided below the negative electrode rod (62); and an aerator (8) is provided below the ultrasonic generator (7).

2. The ultrasonic electro-Fenton wastewater treatment integrated device according to claim 1, characterized in that: Two iron-carbon filler plates (9) are provided, and the two iron-carbon filler plates (9) are arranged from top to bottom.

3. The ultrasonic electro-Fenton wastewater treatment integrated device according to claim 2, characterized in that: A filter screen plate (110) is provided above the upper iron-carbon filler plate (9).

4. The ultrasonic electro-Fenton wastewater treatment integrated device according to claim 1, characterized in that: A feed port (120) is provided above the pH adjustment tank (12).

5. The ultrasonic electro-Fenton wastewater treatment integrated device as claimed in claim 4, characterized in that: A first channel is provided at the lower end of the first partition plate (3), a second channel is provided below the second partition plate (4), a third partition plate (121) is vertically arranged in the pH adjustment tank (12), and a third channel is provided at the upper end of the third partition plate (121).

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