Ultrasonic electrochemical ammonia-nitrogen wastewater treatment device

Abstract

The utility model relates to the technical field of environmental engineering, in particular to an ultrasonic electrochemical ammonia-nitrogen wastewater treatment device which sequentially comprises a flocculation reaction tank, a treatment agent reaction tank, an inclined tube precipitation tank, an ultrasonic reaction tank and an electrochemical reaction tank, a flocculant stirrer is mounted in the flocculation reaction tank; a sodium hypochlorite stirrer is mounted in the treating agent reaction tank; an ultrasonic oscillation generator is mounted in the ultrasonic reaction tank, and the ultrasonic reaction tank is communicated with the electrochemical reaction tank through a pipeline. Through combined application of ultrasonic waves and electrochemical reaction, pollutants such as organic matters, ammonia nitrogen and the like in wastewater can be effectively degraded, so that the wastewater treatment efficiency and the water quality purification degree are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental engineering, and more specifically to an ultrasonic electrochemical ammonia nitrogen wastewater treatment device. Background Art

[0002] In today's society, there are already some technical solutions for treating ammonia nitrogen-containing wastewater:

[0003] One common technology is biological treatment methods, such as activated sludge and biofilter. These methods use microorganisms to degrade organic matter and ammonia nitrogen, converting pollutants in wastewater into harmless substances. However, these methods have some disadvantages, such as low treatment efficiency, long treatment cycle, and sensitivity to temperature and pH.

[0004] Another mainstream technology is chemical oxidation, such as ozone oxidation, advanced oxidation and redox reaction. These methods use chemical oxidants to oxidize and decompose organic matter and ammonia nitrogen in wastewater. However, these methods often require a lot of energy and chemicals, are complicated to operate and have high costs. In addition, some by-products may be produced during the treatment process, such as highly concentrated sludge and harmful substances.

[0005] With regard to the shortcomings of the above-mentioned prior art, the reasons leading to these problems are mainly as follows:

[0006] 1. Disadvantages of biological treatment methods: Biological treatment methods have strict requirements on temperature and pH value, and have low efficiency in degrading organic matter and ammonia nitrogen in wastewater; the treatment cycle is long and requires a lot of operation and maintenance work; certain substances in wastewater may inhibit the growth of microorganisms and affect the treatment effect.

[0007] 2. Disadvantages of chemical oxidation: Chemical oxidation usually requires a lot of energy and chemicals, and is costly; the use of oxidants may produce by-products and have a certain impact on the environment; the operation is complicated and has high requirements for equipment.

[0008] In summary, the existing technical solutions have some shortcomings in treating ammonia nitrogen-containing wastewater. The main reason is that the treatment methods adopted have certain limitations in efficiency, cost and operation. Utility Model Content

[0009] In order to solve the above problems, the utility model provides an ultrasonic electrochemical ammonia nitrogen wastewater treatment device, which aims to overcome the shortcomings of the prior art, improve treatment efficiency, reduce energy consumption, and reduce dependence on chemical agents, thereby achieving the goal of efficiently treating and purifying ammonia nitrogen-containing wastewater.

[0010] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions, which mainly include:

[0011] The ultrasonic electrochemical ammonia nitrogen wastewater treatment device is composed of a flocculation reaction tank, a treatment agent reaction tank, an inclined tube sedimentation tank, an ultrasonic reaction tank and an electrochemical reaction tank in sequence; a flocculant agitator is installed in the flocculation reaction tank; a sodium hypochlorite agitator is installed in the treatment agent reaction tank; an ultrasonic oscillation generator is installed in the ultrasonic reaction tank, and the ultrasonic reaction tank is connected to the electrochemical reaction tank through a pipeline.

[0012] Preferably, an ultrasonic sensor is also installed in the ultrasonic reaction tank.

[0013] Preferably, an ammonia nitrogen wastewater mixing circulation pump is also installed in the ultrasonic reaction tank.

[0014] Preferably, a cathode electrode and an anode electrode are respectively installed in the electrochemical reaction tank for catalyzing redox reactions.

[0015] Preferably, the electrochemical reaction tank is also equipped with a temperature sensor, an ammonia nitrogen detector, a conductivity sensor, a dissolved oxygen detector and a liquid level meter.

[0016] Preferably, a flow meter is installed on the pipeline between the ultrasonic reaction tank and the electrochemical reaction tank.

[0017] It can be seen from the above technical solution that compared with the prior art, the beneficial effects of the utility model are as follows:

[0018] 1. Efficient treatment: By combining ultrasonic and electrochemical technologies, the device of the present application can improve the efficiency of ammonia nitrogen wastewater treatment. Ultrasonic technology can increase the contact frequency between ammonia nitrogen and the treatment agent in the wastewater and promote the reaction rate, while electrochemical technology can efficiently degrade ammonia nitrogen and achieve wastewater purification. Therefore, this device can treat wastewater more quickly and thoroughly, and improve treatment efficiency.

[0019] 2. Reduced energy consumption: Compared with traditional oxidation methods, the device of the present application can reduce energy consumption when treating ammonia nitrogen wastewater. Ultrasonic technology can improve treatment efficiency without increasing additional energy consumption, and electrochemical technology can also complete the degradation of ammonia nitrogen at low energy consumption, thereby reducing energy consumption.

[0020] 3. Reduce waste residue generation: Since the device of the present application adopts a physical and chemical method, the amount of waste residue generated is less than that of traditional oxidation methods. The combination of ultrasonic and electrochemical technology enables ammonia nitrogen in wastewater to be efficiently converted into harmless substances, reducing the generation of waste residue, and reducing the cost and environmental burden of waste residue treatment.

[0021] 4. Environmental protection and sustainability: The device of the present application is environmentally friendly and can treat high-concentration ammonia nitrogen wastewater into water quality that meets emission standards, reducing pollution to water resources and the ecological environment, which is conducive to protecting the environment and promoting sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of the utility model.

[0024] Explanation of the reference numerals: 1-sodium hypochlorite agitator; 2-flocculant agitator; 3-flocculation reaction tank; 4-treatment agent reaction tank; 5-inclined tube sedimentation tank; 6-ultrasonic reaction tank; 7-ultrasonic oscillation generator; 8-electrochemical reaction tank; 9-cathode electrode; 10-anode electrode; 11-temperature sensor; 12-ammonia nitrogen detector; 13-conductivity sensor; 14-dissolved oxygen detector; 15-liquid level meter; 16-ammonia nitrogen wastewater mixing circulation pump; 17-ultrasonic sensor; 18-flow meter. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example

[0027] Ultrasonic electrochemical ammonia nitrogen wastewater treatment device, such as Figure 1 As shown, it is composed of a flocculation reaction tank 3, a treatment agent reaction tank 4, an inclined tube sedimentation tank 5, an ultrasonic reaction tank 6 and an electrochemical reaction tank 8 in sequence; a flocculant agitator 2 is installed in the flocculation reaction tank 3; a sodium hypochlorite agitator 1 is installed in the treatment agent reaction tank 4; an ultrasonic oscillation generator 7 is installed in the ultrasonic reaction tank 6, and the ultrasonic reaction tank 6 is connected to the electrochemical reaction tank 8 through a pipeline.

[0028] In order to further optimize the above solution, an ultrasonic sensor 17 is also installed in the ultrasonic reaction tank 6 .

[0029] In order to further optimize the above scheme, an ammonia nitrogen wastewater mixing circulation pump 16 is also installed in the ultrasonic reaction tank 6 to ensure that the wastewater is fully mixed and processed in the reaction tank.

[0030] In order to further optimize the above solution, a cathode electrode 9 and an anode electrode 10 are respectively installed in the electrochemical reaction tank 8 for catalyzing the redox reaction.

[0031] In order to further optimize the above solution, the electrochemical reaction tank 8 is also equipped with a temperature sensor 11, an ammonia nitrogen detector 12, a conductivity sensor 13, a dissolved oxygen detector 14 and a liquid level meter 15.

[0032] In order to further optimize the above solution, a flow meter 18 is installed on the pipeline between the ultrasonic reaction tank 6 and the electrochemical reaction tank 8 .

[0033] The wastewater enters the flocculation reaction tank 3, and after adding flocculants and continuously stirring through the flocculant stirrer 2, it flows into the treatment agent reaction tank 4, and after fully reacting with the treatment agent, it flows into the inclined tube sedimentation tank 5. The wastewater flows into the ultrasonic reaction tank 6. Under the coverage of the ultrasonic sensor 17, the contact frequency between the ammonia nitrogen in the wastewater and the treatment agent is increased, and a high-frequency ultrasonic signal is generated by the ultrasonic oscillator 7 (usually located at the bottom to ensure that the ultrasonic wave can fully cover the wastewater) to make the wastewater and the treatment agent fully mixed. At the same time, the wastewater passes through the electrochemical reaction tank 8, and the electrodes (the shape and layout of the electrodes may vary according to the specific design, but are usually flat or mesh structures to increase the contact area and improve the reaction efficiency.) The cathode electrode 9 (the cathode is usually made of reducing materials, such as palladium, platinum, etc.) and the anode electrode 10 (the anode is usually made of oxidizing materials, such as iron, chromium, etc.) catalyze the redox reaction under the power supply to degrade the ammonia nitrogen into harmless substances. After the reaction, the treated water is discharged, and the purification treatment of the wastewater is achieved. The entire process is carried out under the monitoring of the temperature sensor 11 (controlling the temperature of the electrochemical reaction tank 8 and keeping the reaction temperature within a suitable range), the ammonia nitrogen detector 12, the conductivity sensor 13, and the dissolved oxygen detector 14 to ensure the treatment effect and process stability. During the working process, the ultrasonic generator generates a high-frequency ultrasonic signal, and the sensor transmits the ultrasonic energy to the wastewater to increase the contact frequency between the ammonia nitrogen in the wastewater and the treatment agent. At the same time, the wastewater passes through the electrochemical reaction cell, and the oxidation-reduction reaction under electrode catalysis degrades the ammonia nitrogen into harmless substances. Ultrasonic technology and electrochemical technology complement each other to achieve efficient ammonia nitrogen wastewater treatment effect.

[0034] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0035] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. Ultrasonic electrochemical ammonia nitrogen wastewater treatment device, characterized in that: The invention is composed of a flocculation reaction tank, a treatment agent reaction tank, an inclined tube sedimentation tank, an ultrasonic reaction tank and an electrochemical reaction tank in sequence; a flocculant agitator is installed in the flocculation reaction tank; a sodium hypochlorite agitator is installed in the treatment agent reaction tank; an ultrasonic oscillation generator is installed in the ultrasonic reaction tank, and the ultrasonic reaction tank is connected to the electrochemical reaction tank through a pipeline.

2. The ultrasonic electrochemical ammonia nitrogen wastewater treatment device according to claim 1 is characterized in that: An ultrasonic sensor is also installed in the ultrasonic reaction tank.

3. The ultrasonic electrochemical ammonia nitrogen wastewater treatment device according to claim 1 or 2, characterized in that: An ammonia nitrogen wastewater mixing circulation pump is also installed in the ultrasonic reaction tank.

4. The ultrasonic electrochemical ammonia nitrogen wastewater treatment device according to claim 1 is characterized in that: The electrochemical reaction tank is provided with a cathode electrode and an anode electrode for catalyzing redox reactions.

5. The ultrasonic electrochemical ammonia nitrogen wastewater treatment device according to claim 1 or 4, characterized in that: The electrochemical reaction tank is also equipped with a temperature sensor, an ammonia nitrogen detector, a conductivity sensor, a dissolved oxygen detector and a liquid level meter.

6. The ultrasonic electrochemical ammonia nitrogen wastewater treatment device according to claim 2 is characterized in that: A flow meter is installed on the pipeline between the ultrasonic reaction tank and the electrochemical reaction tank.

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