JP2018187632A - Apparatus and method for reducing hazardous substances in sewage and wastewater to eliminate ecotoxicity - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus and a method for reducing hazardous substances in sewage and wastewater to eliminate ecotoxicity.SOLUTION: The present invention provides an apparatus for reducing hazardous substances in sewage and wastewater to eliminate ecotoxicity, the apparatus comprising: an oxidation tank for supplying the sewage and wastewater to a main decomposition unit; and the main decomposition unit for treating the sewage and wastewater supplied from the oxidation tank, wherein the main decomposition unit comprises: a decomposition tank 2; a main electron generating device 21a, provided outside the decomposition tank 2, for generating electrons; a main electron injection line 22a for moving the electrons from the main electron generating device 21a into the decomposition tank 2; a wave generating device 24, 25, provided within the decomposition tank 2, for applying an electric field to the electrons generated from the main electron generating device 21a to activate the electrons; and a plurality of plates 26 spaced apart from the inner wall of the decomposition tank and the main electron injection line 22a.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an apparatus and method for reducing hazardous substances of sewage wastewater for removing ecotoxicity. More specifically, the present invention can improve the treatment efficiency of sewage wastewater and provide healthy water rich in dissolved oxygen. The present invention relates to an apparatus and method for reducing hazardous substances in sewage wastewater for removing ecotoxicity.

  In the case of the chlorine disinfection method, which is one of the currently used disinfection methods, the operation of disinfection facilities tends to be interrupted because of problems such as the danger of the disinfection by-product THM (trihalomethane) and effects on aquatic plants. It is in. Actually, it has become clear from experiments that sewage treated with chlorine disinfection shows acute or chronic toxicity to aquatic plants and reduces the type and number of fish. In South Korea, in the case of disinfection methods other than the chlorine disinfection method, the installation area and insufficient accumulation of operation technology are taken up as problems, which leads to difficulty in selecting a disinfection method.

  In recent years, an ultraviolet disinfection device has actually been developed and applied. In the advanced countries, it has been pointed out that there is a possibility of harm when chlorination is performed. In developed countries, protection of environmental ecosystems such as closed waters and aquatic organisms is urgently needed. Although there is a tendency to replace the chlorine disinfection method with the ultraviolet (UV) disinfection method one after another, the ultraviolet disinfection method has a drawback that the maintenance cost is high. In addition, the ultraviolet disinfection method described above inactivates microorganisms using the photo-oxidation effect on DNA, and upon receiving light, the DNA of damaged microorganisms is repaired and activated by the regrowth effect of light. Therefore, there is a tendency to avoid the use of this ultraviolet disinfection method. Damaged DNA is repaired by fluorescence or sunlight.

  Recently, in addition to the UV disinfection method, ozone has been increasingly applied to the water treatment field. In the case of ozone, it is effective in killing organic matter or microorganisms. There is a drawback of high maintenance costs.

  For this reason, there is an urgent need for the development of technology that can treat sewage containing environmentally friendly and hazardous pollutants without using toxic chemicals.

  The present invention has been made in view of the above circumstances, and the purpose of the present invention is to prevent the risk of sewage wastewater for the removal of ecotoxicity, which can remove ecotoxicity in an environmentally friendly manner without using chemical substances including toxicity. An object of the present invention is to provide an apparatus and method for reducing a substance.

  The apparatus for reducing sewage hazardous substances for removing ecotoxicity according to the present invention, which has been devised to achieve the above-mentioned object, is a device for reducing hazardous substances for sewage waste for removing ecotoxicity. An oxidation tank for supplying sewage wastewater to the main decomposition part, and a main decomposition part for treating the sewage wastewater supplied from the oxidation tank, wherein the main decomposition part is a decomposition tank, and A main electron generator that is arranged outside to generate electrons, a main electron injection line that moves the electrons from the main electron generator to the inside of the decomposition tank, and a main electron generator that is arranged in the decomposition tank A wave generator for activating the electrons by applying an electric field to the electrons generated from the apparatus, and a plurality of plates spaced apart from the inner wall of the decomposition tank and the main electron injection line, .

  The apparatus for reducing hazardous substances of sewage wastewater for removing ecotoxicity further includes a sub-decomposition unit that primarily decomposes the sewage wastewater before supplying the sewage water from the oxidation tank to the main decomposition unit. The sub-decomposition unit includes a sewage water supply line for supplying sewage water from the oxidation tank to the main decomposition unit, a sub-electron generator installed outside the oxidation tank to generate electrons and radicals, and the sub-decomposition unit. It is preferable to provide a sub-electron injection line for supplying the electrons and radicals from the electron generator to the sewage water supply line.

  The sub-decomposition unit further includes a plurality of protrusions disposed on the inner wall of the lower wastewater supply line, and the protrusion is provided on the inner wall of the lower wastewater supply line to reduce the movement speed of the wastewater. It is preferable to improve the decomposition efficiency by increasing the time that the sewage remains in the sewage supply line.

  The apparatus for reducing hazardous substances of sewage wastewater for removing ecotoxicity further comprises a device for injecting active species provided on the lower surface of the decomposition tank, and the activity generated from the sub and / or main electron generator It is preferable that the converted waste electrons and radicals are injected by a device for injecting the active species to decompose the waste water in the decomposition tank.

  Activated electrons and radicals generated from the main electron generator are activated by the wave generator while passing through the plurality of plates obliquely spaced from the lower surface of the decomposition tank, and the waste water is decomposed. And discharged to the oxidation tank.

  In addition, the method for reducing sewage hazardous substances for removing ecotoxicity according to the present invention devised to achieve the above-mentioned object is a method for reducing sewage hazardous substances for removing ecotoxicity. And generating an active species including electrons and radicals by generating a plasma outside the wastewater decomposition tank, injecting the active species into the decomposition tank, and an electric field applied to the injected active species. And pulsating the active species by injecting the active species from the lower part of the decomposition tank, and discharging the active species and sewage wastewater to the oxidation tank. The step of discharging the active species and the sewage wastewater into the oxidation tank is performed along plates obliquely spaced in the decomposition tank.

  Further, the method for reducing a sewage hazardous substance for removing ecotoxicity according to the present invention devised to achieve the above-mentioned object is a method for reducing a sewage hazardous substance for removing ecotoxicity. And generating a first active species including electrons and radicals by generating plasma outside the oxidation tank, and moving the first active species to a wastewater decomposition tank along a wastewater injection line Supplying to the sewage wastewater, generating a plasma outside the decomposition tank to generate second active species including electrons and radicals, and injecting the second active species into the decomposition tank Applying an electric field to the injected first and second active species to cause the first and second active species to vibrate, and removing the waved active species from a lower part of the decomposition tank. Injecting, and Characterized in that it comprises the steps of discharging the species and wastewater oxidation tank, the.

  The active species plasma is preferably formed by a pulse glow discharge method and includes radicals generated by an inelastic collision reaction with a neutral gas in the air.

  It is preferable that the wave-generating step is performed in the decomposition tank.

  It is preferable that the step of discharging the active species and the sewage wastewater into the oxidation tank is performed along a plate that is diagonally spaced in the decomposition tank.

  The apparatus and method for reducing hazardous substances of sewage wastewater for removing ecotoxicity according to the present invention removes pollutants from sewage wastewater by using environmentally friendly OH radicals without using toxic chemical substances. Since the treatment efficiency of the sewage wastewater can be increased by using a plurality of plates provided inside the decomposition tank, healthy water rich in dissolved oxygen can be provided.

1 is a cross-sectional view illustrating a structure of a sewage water hazardous substance reducing device for removing ecotoxicity according to an embodiment of the present invention. It is sectional drawing which shows the structure of the reduction device of the waste-water hazardous | toxic substance for the removal of the ecotoxicity which concerns on another embodiment of this invention. It is sectional drawing which shows the structure of the main decomposition part which concerns on one Embodiment of this invention. It is sectional drawing which shows the protrusion part which concerns on another embodiment of this invention. 1 shows a structure of a wave generator according to an embodiment of the present invention. It is a process procedure figure which shows the reduction method of the waste-water hazardous | toxic substance for the removal of the ecotoxicity which concerns on one Embodiment of this invention. It is a process sequence figure which shows the reduction method of the wastewater hazardous | toxic substance for the removal of the ecotoxicity which concerns on another embodiment of this invention. 1 illustrates a principle of reducing sewage water hazardous substances for removing ecotoxicity according to the present invention. 1 shows a process for treating pollutants using an oxidation process according to the present invention. E. An apparatus for reducing sewage hazardous substances for ecological toxicity removal according to an embodiment of the present invention. The evaluation result of E. coli sterilizing power is shown. The apparatus for reducing sewage water hazardous substances for removing ecotoxicity according to an embodiment of the present invention. The evaluation result of aureus bactericidal power is shown.

  The present invention relates to an apparatus and method for reducing sewage hazardous substances for removing ecotoxicity.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, and can be embodied in various different forms. These embodiments merely complete the disclosure of the present invention and are It is provided in order to fully inform the person skilled in the art of the scope of the invention. In the drawings, the same reference numerals indicate the same components.

  In assigning reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even if they are displayed on different drawings. . In describing the present invention, when it is recognized that a specific description of a related known configuration or function may obscure the gist of the present invention, a detailed description thereof will be omitted.

  In describing the constituent elements of the present invention, terms such as first, second, A, B, (a), and (b) can be used. These terms are only for distinguishing the constituent elements from other constituent elements, and the essence, order, or order of the constituent elements are not limited by these terms.

  The present invention relates to a sewage water hazardous substance reducing device for removing ecotoxicity, comprising a main decomposition part 2a for treating sewage water, wherein the main decomposition part 2a is a decomposition tank 2, A main electron generator 21 that is arranged outside the decomposition tank 2 to generate electrons, a main electron injection line 22 that moves the electrons from the main electron generator 21 to the inside of the decomposition tank 2, and the decomposition tank 2 A plurality of wave generators 24 and 25, which are arranged and activated by applying an electric field to electrons generated from the main electron generator 21, and an inner wall of the decomposition tank and the main electron injection line 22a. The present invention provides a device for reducing hazardous substances of sewage wastewater for removing ecotoxicity, which comprises the following plates 26, 27, 28, 29, 30 and 31.

  The sewage wastewater hazardous substance reducing device is supplied with the sewage wastewater from an oxidation tank 1 provided at the front end of the main decomposition section 2a.

  In addition, the present invention is an apparatus for reducing hazardous substances of sewage wastewater for removing ecotoxicity, an oxidation tank 1 provided at the front end or the rear end of an existing treatment plant, and a lower supply supplied from the oxidation tank 1 A main decomposition unit 2a for treating waste water, and a sub-decomposition unit 2b for primarily decomposing the lower waste water before supplying the lower waste water to the main decomposition unit 2a, wherein the sub-decomposition unit 2b includes the oxidation tank 1 to the main decomposition unit 2a, a sub-waste water supply line 11 for supplying the sub-waste water, a sub-electron generator 21b arranged outside the oxidation tank 1 to generate electrons and radicals, and the sub-electron generator 21b to the bottom Provided is a wastewater hazardous substance reducing device for removing ecotoxicity, characterized in that the wastewater supply line 11 includes a sub-electron injection line 22b for supplying the electrons and radicals.

  The sub-decomposition unit 2b further includes a plurality of protrusions 33 and 34 disposed on the inner wall of the lower wastewater supply line, and the protrusions 33 and 34 are provided on the inner wall of the lower wastewater supply line 11 and are The moving speed of the waste water is lowered to increase the time for the waste water to stay in the lower waste water supply line 11.

  The main decomposition unit 2a is disposed outside the decomposition tank 2, the main electron generator 21a that is arranged outside the decomposition tank 2 and generates electrons, and moves the electrons from the main electron generator 21a to the inside of the decomposition tank 2. Wave generators 24 and 25 are provided in the main electron injection line 22a and the decomposition tank 2, and are activated by applying an electric field to electrons and radicals generated from the main electron generator 21a. A plurality of plates 26, 27, 28, 29, 30, and 31 spaced from the inner wall and the main electron injection line 21 a may be further provided.

  The apparatus for reducing sewage water hazardous substances may further include a device 23 for injecting active species provided on the lower surface of the decomposition tank 2, and is generated from the main and / or electron generators 21a and / or 21b. The activated electrons and radicals thus injected are injected by the device 23 for injecting the active species, and the waste water in the decomposition tank 2 is decomposed.

  The apparatus for reducing hazardous wastewater hazardous substances includes a plurality of activated electrons and radicals generated from the main and / or electron generators 21a and / or 21b that are obliquely spaced from the lower surface of the decomposition tank 2. It is activated by the wave generators 24, 25 while passing through the plates 26, 27, 28, 29, 30, 31, and the waste water is decomposed and discharged to the oxidation tank 1.

  FIG. 1 shows the structure of a sewage water hazardous substance reducing device according to an embodiment of the present invention. Referring to FIG. 1, an apparatus for reducing hazardous wastewater hazardous materials according to an embodiment of the present invention is provided at a front end or a rear end of an existing treatment plant to remove dissolved organic substances by aerobic microorganisms, and Oxidation tank 1 for oxidizing a part of ammonia nitrogen, main decomposition part 2a for treating the waste water supplied from the oxidation tank 1, and waste water supply for supplying the waste water in the oxidation tank 1 to the main decomposition part 2 A decomposed sewage and active electron discharge line 32 for discharging the sewage water decomposed in the line 11 and the main decomposition part 2a to the oxidation tank 1 is provided.

  FIG. 2 shows the structure of a sewage water hazardous substance reducing device according to another embodiment of the present invention. Referring to FIG. 2, an apparatus for reducing hazardous wastewater hazardous materials according to another embodiment of the present invention is provided at the front end or the rear end of an existing treatment plant to remove dissolved organic matter by aerobic microorganisms, and The oxidation tank 1 for oxidizing a part of ammonia nitrogen, the main decomposition part 2a for treating the waste water supplied from the oxidation tank 1, and the lower part of the bottom before supplying the lower waste water to the main decomposition part 2a A sub-decomposition unit 2b for decomposing waste water, wherein the sub-decomposition unit 2b is disposed outside the oxidation tank, and includes a lower waste water supply line 11 for supplying lower waste water from the oxidation tank 1 to the main decomposition unit 2a; A sub-electron generator 21b for generating radicals and a sub-electron injection line 22b for supplying the electrons and radicals from the sub-electron generator 21b to the lower wastewater supply line 11 are provided.

  FIG. 3 shows an embodiment of the main disassembly unit 2a shown in FIGS. Referring to FIG. 3, the main decomposition unit (2a in FIGS. 1 and 2) according to an embodiment of the present invention is connected to the oxidation tank (FIGS. 1 and 2) via a wastewater supply line (11 in FIGS. 1 and 2). The decomposition tank 2 in which the waste water supplied from 1) in FIG. 2 is stored, the main electron generator 21a that is disposed outside the decomposition tank 2 and generates electrons, and the decomposition tank 2 along the vertical direction. A main electron injection line 22a for injecting electrons and radicals generated from the main electron generator 21a into the decomposition tank 2 and connected to the lower end of the main electron injection line 22a, and adjacent to the bottom surface of the decomposition tank 2 A device 23 for injecting active species for discharging electrons from the activated decomposition tank 2, and electrons and radicals disposed in the decomposition tank 2 and moving along the main electron injection line 22a, and the decomposition tank 2 electrons and laser Wave generators 24 and 25 for activating electrons by applying an electric field to Cull, a plurality of plates 26, 27, and 28 obliquely spaced on the inner wall of the decomposition vessel 2 and the outer wall of the main electron injection line 22 a , 29, 30, 31 are provided. The sewage water and active electrons decomposed in the decomposition tank 2 are discharged to the oxidation tank (1 in FIGS. 1 and 2) via the decomposed sewage water and active electron discharge line 32.

  The plurality of plates 26, 27, 28, 29, 30, 31 are disassembled with the plurality of first plates 26, 28, 29, 31 formed to extend inward from the inner side wall of the decomposition tank 2. And a plurality of second plates 27 and 30 formed to extend outward from the main electron injection line 22a in the tank 2. Two first plates 26, 28, 29, 31 are formed so as to be separated in the vertical direction and partially overlap each other with the second plates 27, 30 interposed therebetween, and the two first plates arranged vertically One plate 26, 28, 29, 31 is inclined so that the interval becomes narrower as it goes to the tip. The second plates 27 and 30 extend substantially horizontally. Since the sewage wastewater and the activated electrons and radicals pass in a staggered manner between the plurality of plates 26, 27, 28, 29, 30, and 31 in the decomposition tank 2, the sewage wastewater activated electrons and The time for decomposition by radicals is extended, and as a result, the treatment efficiency of hazardous substances in sewage is further increased.

  FIG. 4 shows a sub-disassembly unit 2b according to another embodiment of the present invention. Referring to FIG. 4, the sub-decomposition unit 2b includes the sub-electron generator 21b, the sub-electron injection line 22b, the lower waste water supply line 11, and the protrusions 33 and 34. Electrons and radicals generated from the sub-electron generator 21b are injected into the sewage wastewater supply line 11 through the sub-electron injection line 22b. A plurality of projecting portions 33 and 34 are arranged in a semicircular shape on the inner wall of the lower wastewater supply line 11, and the projecting portions 33 and 34 change the oxidation tank (1 in FIG. 2) to the main decomposition portion (2a in FIG. 2). The moving speed of the supplied wastewater is reduced to increase the time during which the electrons, radicals and wastewater stay in the wastewater supply line 11 to increase the decomposition efficiency of the wastewater.

  The wave generators 24 and 25 are provided next to the inner wall surface of the decomposition tank 2. Since the wave generators 24 and 25 have the same configuration, only one wave generator 24 will be described with reference to FIG. Referring to FIG. 5, the wave generator 24 includes a body portion 101 formed by laminating a large number of metal plates, and a coil portion 104 surrounding the body portion 101. The body portion 101 has a substantially “E” shape, and includes a base portion 102 that is in contact with the inner wall of the decomposition tank 2, and three protruding blade portions 103 that protrude outward from the side surface of the base portion 102 and are separated from each other. . The coil portion 104 is formed of a copper wire surrounding each of the three protruding blade portions 103, and an electric current is provided from the outside through an electric wire with a waterproof coating. Accordingly, when a current is applied to the coil unit 104, an electric field is generated, and electrons and radicals passing between the main electron injection line 22a or the plates 26, 27, 28, 29, 30, 31 are activated.

  In addition, the present invention is a method for reducing hazardous substances of sewage wastewater for removing ecotoxicity, wherein a plasma is generated outside the sewage water decomposition tank 2 to generate active species including electrons and radicals. A step of injecting the active species into the decomposition tank, a step of applying an electric field to the injected active species to wave the active species, and the waved active species in the decomposition tank 2 There is provided a method for treating sewage water, comprising a step of injecting from the lower part and a step of discharging the active species and sewage wastewater to the oxidation tank 1 (FIG. 6).

  The plasma of the active species is formed by a pulse glow discharge method and includes radicals generated by an inelastic collision reaction with a neutral gas in the air.

  The wave generation step is performed in the decomposition tank 2, and immediately before the injection step, an electric field is applied to the active species and activated using waves to amplify energy, thereby causing the active species to be harmful. Reacts with substances to treat sewage.

  In the step of discharging the active species and the sewage wastewater to the oxidation tank 1, the active species and the sewage water are disposed along the plates 26, 27, 28, 29, 30, and 31 that are diagonally spaced in the decomposition tank 2. Is moved in a zigzag pattern, extending the time for the active species and the wastewater to remain in the decomposition tank.

  In addition, the present invention is a method for reducing a sewage waste hazardous substance for removing ecotoxicity, and a step of generating a plasma outside the oxidation tank 1 to generate a first active species containing electrons and radicals. A step of supplying the first active species to the sewage wastewater moving to the sewage wastewater decomposition tank 2 along the sewage wastewater injection line 11, and generating electrons outside the decomposition tank 2 to contain electrons and radicals Generating a second active species; injecting the second active species into the decomposition tank 2; and applying an electric field to the injected first and second active species to generate the first and second active species. Oscillating the second active species, injecting the oscillated active species from the lower part of the decomposition tank 2, and discharging the active species and the sewage wastewater to the oxidation tank 1. Wastewater treatment method To provide (Fig. 7).

  The step of generating the first active species and supplying it to the sewage wastewater moving along the sewage wastewater injection line 11 to the sewage wastewater decomposition tank 2 before the sewage wastewater is supplied to the main decomposition part 2a. Since it is subsequently decomposed, the decomposition efficiency of the waste water is increased.

  The plasmas of the first and second active species are formed by a pulse glow discharge method and include radicals generated by an inelastic collision reaction with a neutral gas in the air.

  The step of wave generation is performed in the decomposition tank 2.

  In the step of discharging the first and second active species and the sewage wastewater to the oxidation tank 1, along the plates 26, 27, 28, 29, 30, 31 obliquely spaced in the decomposition tank 2. The active species and the sewage are moved in a zigzag pattern to increase the time for the active species and the sewage to stay in the decomposition tank 2.

  FIG. 8 shows the principle of treatment of sewage wastewater according to the present invention, in which active species including electrons and radicals are generated by plasma outside the sewage wastewater, and after the active species are injected into the sewage wastewater, electromagnetic waves are generated. And the activated active species are injected to oxidize organic substances and harmful substances in the sewage wastewater to treat the sewage wastewater.

  FIG. 9 shows a process of treating organic substances and hazardous substances using the oxidation process according to the present invention. The ion clusters are generated by polar bonds of water molecules in the air, and various harmful substances are separated from the ion clusters. Encloses and generates OH (hydroxyl group) radicals by a chemical reaction, and the radicals react with the harmful substances to remove the harmful substances.

  The original name of the OH radical is “hydroxyl radical”, and the OH radical is not a chemical component, but is a substance harmless to the human body that uses natural substances to sterilize and remove pollutants. It has excellent deodorization and resolution, and provides healthy water rich in dissolved oxygen after directly removing air pollutants and removing all pollutants.

  The OH radical is a substance having a strong oxidizing power. In general, oxidation means that a substance reacts with oxygen or hydrogen to lose electrons, and is reduced to the side from which electrons are obtained. That is, oxidation and reduction occur simultaneously. The OH radical refers to unstable ions of hydrogen (H +) and oxygen (O-), and these electrons react with various pollutants to oxidize them, and again, the pollutants are separated into safe water and It is sterilized and deodorized by reducing it to air.

  In addition, the oxidizing action on bacteria reacts with bacterial cell membrane or cell wall constituents and OH radicals to peroxidize lipids on the cell membrane. Since the peroxidized cell membrane is inferior in fluidity and transport of substances inside and outside the cell membrane is hindered, there is a possibility that the cell membrane cannot function normally and kills bacteria.

(Experimental example) Evaluation experiment of sterilization power FIG.1 and FIG.3 is sectional drawing which shows the structure of the apparatus which concerns on one Embodiment of this invention. In the main electron generator 21a, plasma is generated using a pulse glow discharge method to generate electrons, and radicals are generated using an inelastic collision reaction with a neutral gas in the air. Then, the activated electrons and radicals are injected using the device 23 for injecting active species, and a plurality of spaced plates 26 are injected. 27, 28, 29, 30 and 31, the activated electrons, radicals and sewage were moved so that the sewage was treated, and then the sterilizing ability of the treated sewage was evaluated.

Table 1 below and FIGS. 10 and 11 show the evaluation results of the sterilizing ability of the apparatus for reducing hazardous wastewater hazardous substances according to an embodiment of the present invention.

  As is apparent from the results, E.I. E. coli exhibits bactericidal activity of 17.2% after 1 minute, 99.9% after 10 minutes, and 99.9% after 60 minutes. S. Aureus has no bactericidal power for 1 minute, but shows 99.9% after 10 minutes and 99.9% or more after 60 minutes. S. Since flexneri exhibits sterilizing power of 29.6% after 1 minute, 34.1% after 10 minutes, and 99.9% or more after 60 minutes, the reduction of hazardous substances in sewage water according to the present invention is reduced. It can be seen that the device is excellent in sterilizing and disinfecting power against contaminants.

1: Oxidation tank 2a: Main decomposition section 2b: Sub decomposition section 2: Decomposition tank 11: Sewage water supply line 21a: Main electron generator 21b: Sub electron generator 22a: Main electron injection line 22b: Sub electron injection line 23: Active species injecting devices 24, 25: Wave generators 26, 27, 28, 29, 30, 31: Plate 32: Disassembled sewage and active electron discharge lines 33, 34: Projection 101: Body 102: Base 103: Blade 104: Coil

Claims (3)

A device for reducing bacteria in sewage water for bacteria removal,
An oxidation tank that removes dissolved organic substances and oxidizes ammonia by an aerobic microorganism that supplies sewage wastewater to the main decomposition section;
A main decomposition section in which sewage water supplied from the oxidation tank is treated;
A sub-decomposition unit that primarily decomposes the waste water before supplying the main waste from the oxidation tank to the main decomposition unit,
The main decomposition part is
A decomposition tank that decomposes bacteria with OH radicals;
A main electron generator arranged outside the decomposition vessel to generate electrons;
A main electron injection line for moving the electrons from the main electron generator into the decomposition vessel;
A device disposed in the decomposition vessel and applying an electric field;
A plurality of plates spaced between the inner wall of the decomposition tank and the main electron injection line;
With
The sub-decomposition unit is
A sewage water supply line for supplying sewage water from the oxidation tank to the main decomposition unit;
A sub-electron generator arranged outside the oxidation tank to generate electrons and radicals;
A sub-electron injection line for supplying the electrons and radicals from the sub-electron generator to the sewage water supply line;
With
The sub-decomposition unit further includes a plurality of protrusions disposed on an inner wall of the lower wastewater supply line,
The protrusion is provided on an inner wall of the lower wastewater supply line to reduce the movement speed of the lower wastewater, increase the time that the lower wastewater stays in the lower wastewater supply line, and improve the decomposition efficiency. Sewage waste bacteria reduction device for removal. A device for injecting active species provided on the lower surface of the decomposition tank;
The activated electrons and radicals generated from the sub and / or main electron generator are injected by the device for injecting the active species, and the waste water in the decomposition tank is decomposed. Item 2. A device for reducing bacteria in sewage wastewater for removing bacteria according to Item 1.   Activated electrons and radicals generated from the main electron generating device are activated by a device that applies the electric field while passing through the plurality of plates obliquely spaced from the lower surface of the decomposition tank, and the sewage waste water The apparatus for reducing bacteria in sewage wastewater for removing bacteria according to claim 1, wherein is decomposed and discharged into the oxidation tank.