KR20000020733A - Water treatment method using magnetic force - Google Patents

Abstract

PURPOSE: A water treatment method using magnetic force is used for removing contaminants, ammonium nitrate, etc, and can change the structure of water molecule. CONSTITUTION: The method needs a permanent magnetic for smoothing water flow. The first disintegrating tank uses supersonic wave generator and specific heat plasma device to remove contaminants like nitrogen. A plasma process can be used for the prevention of volatile organic compounds, nitrogen compounds, etc. A magnetization device is used for changing the structure of water molecule into water in shape of a hexagon. Electric beam lamp is installed in the second disintegration tank. The method needs also condensation tank and settling tank. Using plasma, the method can remove contaminants, ammonium nitrate, and change the structure of water.

Description

Water treatment method using non-thermal plasma and magnetization

The present invention relates to a water treatment method using non-thermal plasma and magnetization.

Non-thermal plasma processing is a state-of-the-art technology that can be applied to the prevention of low concentrations of VOCs, NOx and HAPs in atmospheric gas streams, which can form plasma using an electrical discharge or electron beam.

Since the 1970s, a method of using an electron beam to remove NOx in exhaust gas of a power plant has been studied. In recent years, an electric discharge method has been used in the field of exhaust gas purification. In particular, much attention has been focused on the application of non-thermal plasma to NOx treatment in diesel engine exhaust gas.In the case of oxygen-rich, NOx chemical reduction method is expected to present new breakthroughs in mobile pollutants such as automobiles. Applied only to pollutants.

This non-thermal plasma process uses the principle that most of the electrical energy is used to produce strong electrons rather than heating the gas, and the plasma is generated at the transition point. The strong electrons oxidize contaminant molecules through electron impact dissociation or ionization of background gas molecules. It creates free radicals, ions, and other molecules that can be reduced, reduced, or destroyed. In most low concentration air pollutants, the non-thermal plasma method has been most frequently applied due to energy selectivity.

In addition, the water magnetization process has been used to change the structure of water molecules so that the water molecules have a hexagonal structure.

The present invention seeks to introduce the above-described nonthermal plasma process and magnetization process into a water treatment method.

The present invention seeks to provide a water treatment method suitable for introducing a non-thermal plasma process and a magnetization process into a water treatment method.

1 is a process chart of a water treatment method using non-thermal plasma and magnetization according to the present invention.

Explanation of symbols on the main parts of the drawings

10: magnetic stirrer 20: ultrasonic generator

30: non-thermal plasma apparatus 40: magnetization apparatus

50: electron beam lamp

11: primary digestion tank 12: secondary digestion tank

13: flocculation tank 14: sedimentation tank

In order to achieve the object as described above, the water treatment method using the non-thermal plasma and magnetization according to the present invention, the magnetic stirrer to smooth the flow of raw water by stirring the permanent magnet, ultrasonic wave to decompose the solid material and decontaminate the pollutant A primary decomposition tank step of decomposing contaminants in the influent and removing nitrogen by a non-thermal plasma apparatus for injecting the generator and air into non-thermal plasma; In addition to the magnetic stirrer, the ultrasonic generator, and the non-thermal plasma apparatus, the structure of the water molecules with respect to the treated water having undergone the first decomposition tank step is accompanied by a magnetization apparatus for changing the structure of the water molecules and an electron beam lamp for irradiating the electron beam. A second decomposition tank step of decomposing and decomposing contaminants and removing nitrogen again; An agglomeration tank step of agglomerating the solid material in the treated water that has passed through the secondary decomposition tank step; And a precipitation tank step of precipitating and removing the solid matter aggregated in the flocculation tank step.

Hereinafter, with reference to the accompanying drawings will be described in detail the water treatment method according to an embodiment of the present invention.

1 is a process chart of a water treatment method using non-thermal plasma and magnetization according to the present invention.

As shown in Fig. 1, the water treatment method according to the present invention comprises a primary decomposition tank 11, a secondary decomposition tank 12, a coagulation tank 13, and a precipitation tank 14.

The primary decomposition tank 11 is accompanied by a magnetic stirrer 10, an ultrasonic generator 20, and a non-thermal plasma apparatus 30.

The magnetic stirrer 10 stirs the permanent magnets to smooth the flow of raw water in the primary digestion tank 11 so that the air passing through the non-thermal plasma apparatus 30 is evenly injected. The ultrasonic generator 20 decomposes the solid material and desorbs the pollutant.

Non-thermal plasmad air increases OH radicals in the influent and can simultaneously process nitrogen by electrons.

When electrons collide with air in the nonthermal plasma apparatus 30, oxygen molecules and nitrogen molecules in the air occur as follows.

_{^{e - + O 2 → e -}} + O (3 P) + O (1 D)

_{^{e - + N 2 → e -}} + N + N

Each of the elements causing the above reaction generates a complex reaction in water to generate OH radicals to remove contaminants or to remove ammonia nitrogen and nitrate nitrogen.

First, the process of generating OH radicals to remove contaminants is described.

O ( ¹ D) + H ₂ O → OH + OH

M (pollutant) + OH → Moxid (oxidized pollutant)

Examine the process for removing ammonia nitrogen.

2NH ₃ + 6OH → N ₂ ↑ + 6H ₂ 0

Look at the process for removing nitrate nitrogen.

^{_{NO 3 - + 2H 2 O +}} 3e - → NO + 4OH - ^{_{or, NO 3 - + 4H + +}} 3e - → NO + 2H 2 O

N + NO → N ₂ ↑ + O

The primary cracking tank 11 also simultaneously serves as a storage tank for storing the influent.

The secondary decomposition tank 12 includes a magnetic stirrer 10, an ultrasonic generator 20, a non-thermal plasma apparatus 30, a magnetization apparatus 40, and an electron beam lamp 50.

The treated water that has passed through the primary cracking tank 11 is removed from the secondary cracking tank 12 by the non-thermal plasmad air again to remove contaminants and nitrogen. In addition, in the secondary decomposition tank 12, the structure of water molecules is changed by the magnetization device 40, and the electron beam is irradiated by the electron beam lamp 50 to increase the nitrate nitrogen removal efficiency by electrons. Similarly to the primary decomposition tank 11, the magnetic stirrer 10 also passes through the non-thermal plasma apparatus 30 by smoothing the flow of raw water in the secondary decomposition tank 12 by stirring the permanent magnet in the secondary decomposition tank 12. The air is evenly injected, and the ultrasonic generator 20 decomposes the solid matter and desorbs the pollutant. The magnetic field strength of the magnetizer 40 for changing the structure of water molecules is preferably about 6,000 gauss or more.

In the secondary cracking tank 12, slaked lime and ganban stone may be injected as flocculating accelerators in order to facilitate flocculation of the solid matter in the flocculating tank 13, which is the next step of the secondary cracking tank 12. At this time, the ratio of slaked lime and elvan rock is adjusted according to the concentration of wastewater.

In the treated water in which the pollutant is separated in the secondary decomposition tank 12, the flocculation tank 13 causes the aggregation of the solid material. In this case, a polymer material may be added to facilitate aggregation.

Aggregated solid matter contained in the treated water passed through the coagulation tank 13 is precipitated in the settling tank 14 to be separated from the treated water.

On the other hand, depending on the type of contaminants may have a property that the contaminants decomposed in the primary decomposition tank 11 and the secondary decomposition tank 12 does not precipitate. In this case, instead of the flocculation tank 13 and the settling tank 14 described above, the contaminant may be floated and removed by using a pressurized flotation tank or flotation tank.

The treated water passing through the settling tank 14 may optionally be further subjected to an additional filtration step using a substitution bath.

As described above, the present invention provides a water treatment method using non-thermal plasma and magnetization. According to the present invention, contaminants, ammonia nitrogen and nitrate nitrogen can be removed using a non-thermal plasma, and the structure of water molecules can be changed using a magnetizer.

Claims (4)

In the water treatment method using a non-thermal plasma and magnetization, A magnetic stirrer that smoothes the flow of raw water by stirring the permanent magnet, an ultrasonic generator that decomposes solid materials and removes contaminants, and a non-thermal plasma device that injects non-thermal plasma into the air to decompose contaminants in the influent and remove nitrogen. Primary cracking tank step; In addition to the magnetic stirrer, the ultrasonic generator, and the non-thermal plasma apparatus, the structure of the water molecules with respect to the treated water having undergone the first decomposition tank step is accompanied by a magnetization apparatus for changing the structure of the water molecules and an electron beam lamp for irradiating the electron beams. A second decomposition tank step of decomposing and decomposing contaminants and removing nitrogen again; An agglomeration tank step of agglomerating the solid material in the treated water that has passed through the secondary decomposition tank step; And Non-thermal plasma and magnetization water treatment method characterized in that it comprises a settling tank step of precipitating and removing the solid matter aggregated in the coagulation tank step. The method of claim 1, wherein the magnetic field strength of the magnetizer for changing the structure of the water molecules in the secondary cracking tank is greater than 6,000 gauss. The non-thermal plasma and magnetism of claim 1, wherein the secondary cracking tank step further includes adding slaked lime and ganbanite as flocculating accelerators to facilitate flocculation of the solid material in the next flocculation tank step. Water treatment method using fire. The method of claim 1, wherein the water treatment method further comprises a substitution tank step of additionally filtering the treated water that has passed through the settling tank step.