Bioelectrochemical device for removing antimony and chromium in sewage

Abstract

The utility model relates to a bioelectrochemical device for removing antimony and chromium in sewage. The method is suitable for water treatment. According to the technical scheme, the bioelectrochemical device for removing the antimony and the chromium in the sewage comprises a tank body and a power supply, and a water-permeable cathode structure and a water-permeable anode structure located above the water-permeable cathode structure are arranged in the tank body; a first area is formed below the permeable cathode structure in the tank body; a second region is formed between the water-permeable cathode structure and the water-permeable anode structure; forming a third region over the water permeable anode structure; a water inlet which corresponds to and is communicated with the first area is formed in the tank body; a water outlet which corresponds to and is communicated with the third area is formed in the tank body; the water-permeable anode structure is connected with an anode of the power supply through a wire; the water-permeable cathode structure is connected with the negative electrode of the power supply through a wire; the water-permeable cathode structure is provided with a ruthenium-iridium-tantalum screen plate I, a ruthenium-iridium-tantalum screen plate II and graphite particles filled in the area between the ruthenium-iridium-tantalum screen plate I and the ruthenium-iridium-tantalum screen plate II.

Description

Technical Field

[0001] The utility model relates to a bioelectrochemical device for removing antimony and chromium from sewage, and is applicable to the field of water treatment. Background Art

[0002] Water resources are essential for human survival and a crucial foundation for the healthy development of human society. Antimony and chromium are highly mobile, concealed, and toxic in polluted water. They accumulate in organisms through the food chain, poisoning them and ultimately accumulating in the human body, posing a serious threat to human health and life.

[0003] In recent years, antimony and chromium pollution incidents have occurred frequently in my country, resulting in serious consequences. These pollutions pose a serious threat to the ecological environment and the healthy development of human society. Inhalation or direct exposure to antimony and its compounds can lead to a variety of diseases, including pneumoconiosis, cardiovascular and abdominal diseases, skin disorders, and liver and kidney diseases. Furthermore, studies have shown that antimony and its compounds are carcinogenic and genotoxic to mammals. Antimony and chromium pollution in water bodies poses a serious threat to the ecological environment, human production and life, and has a negative impact on human health. Summary of the Invention

[0004] The technical problem to be solved by the utility model is: in view of the above-mentioned problems, a bioelectrochemical device for removing antimony and chromium from sewage is provided.

[0005] The technical solution adopted by the utility model is: a bioelectrochemical device for removing antimony and chromium from sewage, characterized by comprising a tank body and a power supply, wherein the tank body is provided with a water-permeable cathode structure and a water-permeable anode structure located above the water-permeable cathode structure;

[0006] The tank body forms a first region below the water-permeable cathode structure; a second region between the water-permeable cathode structure and the water-permeable anode structure; and a third region above the water-permeable anode structure.

[0007] The tank body is provided with a water inlet corresponding to and communicating with the first area, and the tank body is provided with a water outlet corresponding to and communicating with the third area;

[0008] The water-permeable anode structure is connected to the positive electrode of the power supply via a wire; the water-permeable cathode structure is connected to the negative electrode of the power supply via a wire;

[0009] The permeable cathode structure comprises a ruthenium-iridium-tantalum mesh plate I and a ruthenium-iridium-tantalum mesh plate II, and graphite particles filling the area between the ruthenium-iridium-tantalum mesh plates I and II.

[0010] The permeable anode structure has a ruthenium-iridium-tantalum mesh plate III.

[0011] The positive electrode of the power supply is connected to the ruthenium-iridium-tantalum mesh plate III via a wire.

[0012] The ruthenium-iridium-tantalum mesh plates I, II and III are installed in the tank body via detachable supports.

[0013] The detachable support is made of organic glass.

[0014] The negative electrode of the power supply is connected to the ruthenium-iridium-tantalum mesh plate I via a wire.

[0015] The tank body is provided with a sampling port which is in communication with the second area.

[0016] The mesh size of the ruthenium-iridium-tantalum mesh plates I, II, and III is 0.1 cm 2 .

[0017] The tank body is prismatic and made of organic glass.

[0018] The second area is a fine filtration area and is filled with fine filtration material.

[0019] The beneficial effects of this utility model are as follows: sewage containing antimony and / or chromium enters the tank through the water inlet and is reduced by the ruthenium-iridium-tantalum mesh plate in the permeable anode structure. Microorganisms, stimulated by electrochemical action, further remove the antimony and chromium. The graphite particles in the permeable anode structure not only provide a place for microorganisms to attach and react, but also absorb odors and remove color. The sewage then passes through the permeable anode structure, where the pollutants are further oxidized. This utility model has excellent antimony and chromium treatment effects and low energy consumption.

[0020] The interior of the tank body of the utility model is divided into a water inlet area (first area), a coarse filtration area (graphite particles), a fine filtration area and a clean water area (third area) from top to bottom. Each area has a clear division of labor. The positions of the coarse filtration area, the ruthenium-iridium-tantalum mesh plate and the fine filtration area can be freely adjusted through a detachable support. The structure is simple and easy to use.

[0021] The ruthenium iridium tantalum mesh plate and the coarse filter area of the utility model can be taken out for cleaning by simply removing the detachable support, and the fine filter area can be cleaned by backwashing. The filter material in the fine filter area has stable properties and a long service life, which reduces the number of filter material replacements.

[0022] This utility model overcomes the shortcomings of existing antimony and chromium-containing wastewater treatment and recycling systems, such as long process steps, complex equipment, large floor space requirements, and poor treatment results. It not only effectively treats wastewater containing organic matter, but also introduces an electrochemical process, resulting in more stable and efficient wastewater treatment. Furthermore, compared to traditional electrochemical methods, the bioelectrochemical method not only treats wastewater containing inorganic matter, but also enhances the efficiency and stability of the electrochemical reaction by introducing microorganisms into the electrochemical reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the structure of the embodiment.

[0024] Figure 2 A top view of the embodiment.

[0025] Figure 3 A side view of an embodiment.

[0026] Explanation of the numbers in the figure: 1-water outlet, 2-ruthenium-iridium-tantalum mesh plate III, 3-sampling port, 4-graphite particles, 5-positive power supply, 6-water inlet, 7-ruthenium-iridium-tantalum mesh plate I, 8-ruthenium-iridium-tantalum mesh plate II, 9-negative power supply, 10-tank body. DETAILED DESCRIPTION

[0027] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0028] The terms used in the embodiments of the present application are for the purpose of describing specific embodiments only and are not intended to limit the present application. The singular forms "a", "an", "the" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0029] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described based on the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it should be understood that when it is mentioned that an element is connected to another element "on" or "under", it can not only be directly connected to the other element "on" or "under", but also be indirectly connected to the other element "on" or "under" through an intermediate element.

[0030] like Figures 1-3 As shown, this embodiment provides a bioelectrochemical device for removing antimony and chromium from sewage, including a tank body and a power supply.

[0031] In this example, a permeable cathode structure and a permeable anode structure located above the permeable cathode structure are provided inside the tank body. The permeable cathode structure and the permeable anode structure divide the interior of the tank body into a first area (water inlet area) located at the bottom, a second area (fine filtration area) located in the middle, and a third area (clean water area) located at the top.

[0032] In this embodiment, a water inlet, a sampling port and a water outlet are connected to the side wall of the tank body, wherein the water inlet corresponds to and is connected to the first area; the sampling port corresponds to and is connected to the second area; and the water outlet corresponds to and is connected to the third area.

[0033] In this embodiment, the permeable cathode structure includes a ruthenium-iridium-tantalum mesh plate I and a ruthenium-iridium-tantalum mesh plate II located above the ruthenium-iridium-tantalum mesh plate I. A coarse filtration area is formed between the ruthenium-iridium-tantalum mesh plates I and II, and the coarse filtration area is filled with 0.4-1.5 mm graphite particles; the permeable anode structure adopts the ruthenium-iridium-tantalum mesh plate III.

[0034] Graphite particles have the function of allowing microorganisms to attach and adsorb, and can adsorb and remove heavy metal pollutants such as antimony and chromium. The pores of the particles can provide space for microbial growth and reproduction, which can effectively promote the removal of antimony and zinc pollutants in sewage by microorganisms. The water outlet is at the top of the device and also plays a certain filtering role. The graphite particles can also adsorb odors in water and remove color.

[0035] In this embodiment, the negative electrode of the power supply is connected to the ruthenium-iridium-tantalum mesh plate I via a wire, and the positive electrode of the power supply is connected to the ruthenium-iridium-tantalum mesh plate III via a wire.

[0036] In this example, the mesh size of ruthenium-iridium-tantalum mesh plates I, II, and III is 0.1 cm 2 , and are all installed in the tank body through a detachable support, and the detachable support is made of high-strength organic glass. In this example, the tank body is prismatic and has an organic glass structure.

[0037] Sewage enters the equipment from the bottom. After passing through the water inlet, the antimony and chromium in the sewage can be reduced by the ruthenium iridium tantalum mesh plate I at the cathode. Then, the antimony and chromium are further removed by microorganisms under the electrochemical stimulation. In addition to providing a place for microorganisms to attach and react, the graphite particles can also absorb odors and remove color. Then, they are reduced by the ruthenium iridium tantalum mesh plate II at the cathode. Finally, after passing through the ruthenium iridium tantalum mesh plate III, the sewage is further oxidized. In addition to heavy metals, other pollutants in the water can also be removed.

[0038] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A bioelectrochemical device for removing antimony and chromium from wastewater, characterized by: It comprises a tank body and a power supply, wherein the tank body is provided with a water-permeable cathode structure and a water-permeable anode structure located above the water-permeable cathode structure; A first region is formed within the tank below the water-permeable cathode structure; and a second region is formed between the water-permeable cathode structure and the water-permeable anode structure. forming a third region above the water-permeable anode structure; The tank body is provided with a water inlet corresponding to and communicating with the first area, and the tank body is provided with a water outlet corresponding to and communicating with the third area; The water-permeable anode structure is connected to the positive electrode of the power supply via a wire; the water-permeable cathode structure is connected to the negative electrode of the power supply via a wire; The permeable cathode structure comprises a ruthenium-iridium-tantalum mesh plate I and a ruthenium-iridium-tantalum mesh plate II, and graphite particles filling the area between the ruthenium-iridium-tantalum mesh plates I and II.

2. The bioelectrochemical device for removing antimony and chromium from wastewater according to claim 1, characterized in that: The permeable anode structure has a ruthenium-iridium-tantalum mesh plate III.

3. The bioelectrochemical device for removing antimony and chromium from wastewater according to claim 2, characterized in that: The positive electrode of the power supply is connected to the ruthenium-iridium-tantalum mesh plate III via a wire.

4. The bioelectrochemical device for removing antimony and chromium from wastewater according to claim 2, characterized in that: The ruthenium-iridium-tantalum mesh plates I, II and III are installed in the tank body via detachable supports.

5. The bioelectrochemical device for removing antimony and chromium from wastewater according to claim 4, characterized in that: The detachable support is made of organic glass.

6. The bioelectrochemical device for removing antimony and chromium from wastewater according to claim 1, characterized in that: The negative electrode of the power supply is connected to the ruthenium-iridium-tantalum mesh plate I via a wire.

7. The bioelectrochemical device for removing antimony and chromium from wastewater according to claim 1, characterized in that: The tank body is provided with a sampling port which is in communication with the second area.

8. The bioelectrochemical device for removing antimony and chromium from wastewater according to claim 1, characterized in that: The mesh size of the ruthenium-iridium-tantalum mesh plates I, II, and III is 0.1 cm 2 .

9. The bioelectrochemical device for removing antimony and chromium from wastewater according to claim 1, characterized in that: The tank body is prismatic and made of organic glass.

10. The bioelectrochemical device for removing antimony and chromium from wastewater according to claim 1, characterized in that: The second area is a fine filtration area and is filled with fine filtration material.

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