JP2000279977A - Fluid treatment and fluid treatment apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve an efficient decomposition or oxidation treatment of organic matter or inorganic matter, such as iron and manganese, by passing fluid containing the organic matter or the inorganic matter, such as iron and manganese, through a discharge section which generates ozone by a discharge at the time of the treatment of fluid, such as drinking water, sewage, waste water and exhaust gases. SOLUTION: This apparatus has a water injection section 1 which diffuses and introduces raw water, a gas-liquid mixing section 2 which mixes the introduced raw water and gas, the discharge section 3 which generates ozone, active species and shock waves by the discharge, etc., when the apparatus is implemented for a water treatment apparatus for treating the drinking water. The discharge section 3 is internally provided with many electrodes 11 in multiple stages. Conductors 13 of the respective electrodes 11 are respectively alternately connected to either of the high-tension side conductors and low-tension side conductors connected to a high voltage pulse generator 9. The raw water introduced into the water injection section 1 falls by gravity to the gas-liquid mixing section 2 where the raw water comes into contact with the gas and the ozone and the organic matter is oxidized and decomposed by the ozone. The raw water is passed through the discharge section 3 and is brought into contact with the electrodes 11, by which the organic matter is oxidized and decomposed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for treating fluids such as clean water, sewage, waste water and exhaust gas, and more particularly to an organic substance or iron contained in a fluid using ozone.
The present invention relates to a fluid treatment method and a fluid treatment device for decomposing inorganic substances such as manganese.

[0002]

2. Description of the Related Art
This type of fluid treatment method is disclosed in
No. 0 is known. That is, what is shown in the publication is a method of treating tap water as a fluid. As shown in FIG. 9, after raw water 51 taken from a water source is temporarily stored in a landing well 52, chlorine 53, a flocculant 54, After the addition of the pH adjuster 55 and then stirring and mixing in the rapid mixing pond 56, the floc is formed and precipitated in the floc forming pond 57 and the sedimentation pond 58. After oxidizing and decomposing organic matter, the residual ozone is decomposed through an activated carbon adsorption tank 61,
The sand filtration 62 is performed, and finally chlorine is added to adjust the residual chlorine concentration. And oxidation by the ozone,
The decomposition is performed by injecting ozone generated from an ozone generator using discharge into raw water.

[0003] In this method, ozone is used to decolorize, deodorize, decompose and sterilize organic halogen compounds such as trihalomethane, precursors of these organic halogen compounds, and oxidize and decompose non-biodegradable organic substances. (Treated water) can be obtained.

Japanese Patent Application Laid-Open No. 4-197420 discloses a treatment method in which a waste gas from a wastewater treatment plant is deodorized as a fluid by a scrubber. This method uses ozone generated by an ozone generator. Water is injected into the water, the water is brought into contact with the exhaust gas, and the odor in the exhaust gas is removed by oxidation and decomposition with ozone.

[0005] By the way, the fluid treatment method using ozone has the above-mentioned advantages, but a method capable of decomposing more efficiently is desirable.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a fluid processing method and a fluid processing apparatus capable of efficiently decomposing or oxidizing organic substances or inorganic substances such as iron and manganese in view of the above-mentioned conventional needs. Things.

[0007]

The inventor of the present invention has focused on not only generation of ozone but also generation of active species such as oxygen radicals, hydrogen radicals, and hydroxy radicals and shock waves when generating ozone by electric discharge. After careful examination,
The above problem has been solved by the following means.

[0008] That is, a solution to the above problem is a fluid processing method characterized by passing a fluid containing an organic substance or an inorganic substance such as iron or manganese through a discharge section 3 for generating ozone by discharge.

According to the above method, by causing the fluid to pass through the discharge unit 3, the active species and the shock wave generated simultaneously with the ozone can be immediately applied to the fluid. This shock wave is known to have a bactericidal action, while the active species is an extremely reactive oxidizing agent, and by a hydrogen abstraction reaction, an addition reaction to a double bond, an electron transfer reaction, etc. It is known that it has an action of oxidatively decomposing organic substances, and these can act together with ozone.

Here, the discharge portion 3 means a portion to which the effects of shock waves and active species are exerted.
The case where the fluid to be treated is passed between the electrodes or the case where the fluid to be treated is brought into contact with the electrodes can be used.
However, from the viewpoint of the effect, it is preferable that the fluid to be treated is brought into contact with the electrode. That is, since the active species and the shock wave have a short life, the longer the distance between the discharge unit 3 and the fluid, the more the effect is lost. Can be efficiently obtained. In addition, the effects of ozone oxidation and decomposition are maintained as they are. In the present invention, the fluid to be treated is water such as clean water, sewage, or waste water,
Gases from wastewater treatment plants, gases such as exhaust gas. , Dyes and the like.

Further, in the fluid treatment method according to the present invention, it is preferable that gas-liquid mixing be performed before the gas passes through the discharge unit 3. By gas-liquid mixing, even if the fluid is a fluid with a low oxygen content such as water, ozone can be generated without lack of oxygen in the discharge unit 3.

Further, in the fluid treatment method according to the present invention, the ozone generated from the discharge unit 3 is passed through the gas-liquid mixing unit 2 filled with a filler before passing the fluid through the discharge unit 3. Preferably, the fluid flows in a direction opposite to the flowing direction. By doing as described above, the ozone that has not reacted in the discharge unit 3 flows into the gas-liquid mixing unit 2, and the chance of contact with the untreated fluid in the gas-liquid mixing unit 2 increases. Ozone can be made to efficiently act on the fluid, and unreacted ozone is prevented from being released into the atmosphere.

[0013] In the fluid treatment method of the present invention,
Preferably, the discharge is caused by applying a voltage pulse between the electrodes 11. By using a voltage pulse, the movement of ions is limited only during the pulse width, and the amount of ions moving between the electrodes 11 is reduced. And active species can be efficiently generated. In particular, this pulse width is more preferably 1 μsec or less. If the pulse width is 1 μsec or less, ions can hardly move between the electrodes 11, and ozone and active species can be generated more efficiently.

Another means for solving the above-mentioned problems is characterized in that the discharge unit 3 for generating ozone by discharge is provided with discharge treatment means for passing a fluid containing an organic substance or an inorganic substance such as iron or manganese. Fluid treatment equipment.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a fluid processing method and a fluid processing apparatus according to the present invention will be described with reference to the drawings. First Embodiment First, water (water, sewage, etc.) is used as a fluid.
The water treatment apparatus will be described by taking as an example.

FIG. 1 is a schematic diagram showing a water treatment apparatus for treating tap water. The water treatment apparatus according to the first embodiment includes a water injection section 1 for diffusing and introducing raw water (water to be treated as a raw material), and a gas mixture provided below the water injection section 1 for mixing the introduced raw water and gas. A liquid mixing section 2, a discharge section 3 provided below the gas-liquid mixing section 2 and generating ozone, active species and shock waves by discharge, and a gas introducing section 4 provided below the discharge section 3. It has a configuration including a drain section 5 provided below the gas introduction section 4 and is formed in a substantially prismatic shape.

The water injection section 1 is provided with a sprinkler 7 for diffusing and spraying raw water introduced from outside the apparatus, and an exhaust port 6 on a side wall. In addition, the water injection section 1 and the gas-liquid mixing section 2 are arranged such that raw water in the water injection section 1 is
It is configured in a continuous state so as to flow into the gas-liquid mixing section 2 by gravity drop. Further, the inside of the gas-liquid mixing section 2 is filled with a filler such as pellets, Raschig rings, etc., and the raw water flows through the gap between the fillers, the rising gas introduced from the gas introduction section 4 and the discharge section. 3, while being in contact with the ozone generated, and falling by gravity.

The discharge unit 3 is provided with the gas-liquid mixing unit 2.
Is provided in a continuous state with the gas-liquid mixing section 2 so that the raw water passing through the discharge section 3 flows into the discharge section 3, and a number of electrodes 11 connected to the high-voltage pulse generator 9 are provided therein. It is provided in multiple stages and is configured as discharge processing means.
As shown in FIG. 2, the electrode 11 is formed in a cylindrical rod shape, and has a conductor 13 made of stainless steel as a central axis and a peripheral surface of the central axis covered with a dielectric 15 made of quartz. In addition, they are arranged substantially in parallel and in a horizontal row (on the same plane) so that the adjacent electrodes 11 and side surfaces face each other. Then, units in which the electrodes 11 are arranged in one horizontal row are provided in multiple stages.

The conductor 13 of the electrode 11 is alternately connected to one of the high-voltage conductor 14 and the low-voltage conductor 12 connected to the high-voltage pulse generator 9.
The electrode 11 connected to the low voltage side conductor 12 is connected to the discharge unit 3.
Is disposed closer to the casing (wall), thereby preventing a high-voltage current from flowing through the casing and water, thereby preventing a short circuit.

Further, the gas introduction section 4 is configured so that raw water passing through the discharge section 3 flows in continuously with the discharge section 3, and a gas introduction port 8 is provided on a side wall. Then, in a continuous communication state with the gas introduction unit 4,
Is provided, and the fluid processing apparatus of the first embodiment is configured.

Next, the water treatment method according to the first embodiment will be described with reference to an example in which the above-mentioned water treatment apparatus is used. The outline of the water treatment method of the first embodiment is as follows. First, organic matter contained in raw water is coagulated and settled to remove organic matter capable of floc sedimentation (coagulated sedimentation treatment). Then, the raw water is introduced into the water injection section 1.

Next, the raw water introduced into the water injection section 1 is dropped by gravity and introduced into the gas-liquid mixing section 2. As described above, the raw water introduced into the gas-liquid mixing section 2 passes through the gap between the fillers, comes into contact with the ascending gas and ozone, is sufficiently mixed, and organic substances are oxidized and decomposed by ozone. Then, the raw water is passed through the discharge unit 3 and is brought into contact with the electrode 11 to oxidize and decompose the organic matter (discharge treatment).

Next, the raw water having undergone the oxidation or decomposition of the organic matter in the discharge section 3 is passed through the gas introduction section 4 and the drain section 5 to be discharged from the apparatus. When passing through the above device, a gas (a gas containing oxygen) is always introduced from the gas inlet 8. The introduced gas rises in opposition to the flow of the raw water and is discharged from an exhaust port 6 provided in the water injection section 1.

Next, the raw water discharged from the above apparatus is introduced into an activated carbon tank provided with granular activated carbon to remove ozone dissolved in the raw water. At this time, organic matter oxidized and decomposed by ozone etc. is also
It is further oxidized and decomposed (activated carbon treatment).

Next, a coagulant, a pH adjuster, chlorine and the like are appropriately added to the raw water flowing out of the activated carbon tank to coagulate the remaining organic matter (coagulation treatment), followed by sand filtration to obtain treated water.

In the first embodiment, since the discharge section 3 is located below the gas-liquid mixing section 2, the unreacted ozone in the discharge section 3 naturally rises without using a pump or the like. And introduced into the gas-liquid mixing section 2, and also in the gas-liquid mixing section 2,
Oxidation, decomposition, sterilization and the like by ozone can be performed, and oxidation and decomposition of organic substances can be efficiently performed.

In the first embodiment described above, the above-described apparatus and method have the above-described advantages, but the present invention is not limited to the first embodiment, and may be appropriately changed. The design can be changed. That is, in the water treatment method of the first embodiment, coagulation and sedimentation treatment, discharge treatment, activated carbon treatment, coagulation treatment, and sand filtration were performed in this order to obtain treated water. However, as shown in FIG. In the case of performing treatment, sand filtration, discharge treatment, and activated carbon treatment in this order to obtain treated water, as shown in (b), when performing coagulation sedimentation treatment, discharge treatment, activated carbon treatment, and sand filtration in the order of treated water,
As shown in (c), coagulation sedimentation treatment, discharge treatment, sand filtration,
Even in the case where the treated water is obtained by performing the activated carbon treatment in the order, it is within the intended range of the present invention. In short, the organic matter is oxidized and decomposed (discharge treatment) by bringing raw water into contact with the electrode 11 or the like.
If so, it is within the intended scope of the present invention.

In the above embodiment, the raw water is
Before passing through the discharge unit 3, the gas is passed through the gas-liquid mixing unit 2.
That is, when passing through the gas-liquid mixing section 2 after passing through the discharge section 3,
The case where the gas-liquid mixing section 2 is provided below the discharge section 3 is also within the range intended by the present invention. For example, as in the water treatment apparatus shown in FIG. 8, without providing the gas-liquid mixing unit 2 between the water injection unit 1 and the discharge unit 3, the raw water discharged from the drain unit 5 and the gas containing unreacted ozone are mixed. An apparatus in which a gas-liquid mixing section 2 to be mixed is provided outside a drain section 5, wherein an unreacted gas containing ozone introduced into the gas-liquid mixing section 2 is supplied to an exhaust port 6 provided in a water injection section 1. And the like, and may be injected into the raw water in the gas-liquid mixing unit 2 using a diffuser or the like (the other parts are the same as in the above embodiment).

By adopting such a structure, undecomposed and unoxidized organic substances contained in the raw water passing through the discharge part 3 can be efficiently oxidized and decomposed by using ozone unreacted in the discharge part 3. Can be done.

Further, without providing the gas-liquid mixing section 2 outside the drain section 5 as in the apparatus shown in FIG. 8, unreacted gas containing ozone is introduced into the drain section 5 by a diffuser or the like. The drain 5
Is within the range intended by the present invention. Even with such a configuration, the same operation and effect as the device of FIG. 8 can be obtained.

Further, in the first embodiment, the water treatment method for treating clean water has been described as an example of the fluid treatment method. However, the water treatment method for treating sewage is within the scope of the present invention. Is within.

In the case of treating sewage, raw water is treated with sand or a fiber material and then subjected to a discharge treatment and then to an activated carbon treatment. Alternatively, instead of the activated carbon treatment, an ultrafiltration membrane or microfiltration is used. A case where membrane filtration is performed by a membrane or the like can be exemplified.

<Second Embodiment> Next, a gas processing apparatus will be described using a gas as an example of a fluid.

FIG. 3 is a schematic view showing a gas processing apparatus according to the second embodiment. The gas processing device of the second embodiment is
A discharge unit 3 for generating ozone, active species and shock waves by discharge, and a gas-liquid mixing unit 2 provided above the discharge unit 3
And a pipe 18 for circulating circulating water between the gas-liquid mixing section 2 and the discharge section 3.

The discharge section 3 is provided with a gas inlet 17 for introducing a gas, and has therein a high-voltage pulse generator 9 similar to the discharge section 3 of the water treatment apparatus. A large number of connected electrodes 11 are provided. The arrangement of the electrodes 11 is the same as in the first embodiment.
The gas-liquid mixing section 2 is communicated with the discharge section 3 so as to introduce the gas in the discharge section 3 by ascending, and has a gas discharge port for discharging gas to the outside at an upper portion. 19, and the inside is filled with a filler similarly to the above-mentioned water treatment apparatus.

The pipe 18 for circulating the circulating water is arranged so as to communicate the lower part of the discharge part 3 and the upper part of the gas-liquid mixing part 2. Further, as shown in FIG.
The circulating water derived from the lower part of the discharge part 3 is
And passed through the gas-liquid mixing unit 2 to the discharge unit 3
A pump or the like is provided so as to circulate in the direction of introduction into the device. That is, in the gas-liquid mixing section 2, the gas and the circulating water are configured to flow in directions facing each other.

Next, the gas processing method according to the second embodiment will be described by taking the case where the above-described gas processing apparatus is used as an example. First, a gas is introduced into the discharge unit 3 from the gas inlet 17, and organic substances in the gas are oxidized and decomposed by ozone, active species and shock waves generated by the discharge.

Next, in the discharge unit 3, the gas obtained by oxidizing and decomposing organic substances is introduced into a lower part of the gas-liquid mixing unit 2. At this time, unreacted ozone is also supplied to the gas and introduced into the gas-liquid mixing section 2. The gas and ozone introduced into the gas-liquid mixing section 2 naturally (due to the difference in specific gravity between gas and circulating water)
As it rises, it comes into contact with circulating water circulating from the top to the bottom, and unoxidized and undecomposed organic matter is absorbed by the circulating water. At this time, the circulating water that has absorbed the organic matter contacts the ozone, and the organic matter that has been absorbed by the circulating water is oxidized and decomposed in the gas-liquid mixing unit 2. Further, the circulating water is discharged from the discharge unit 3
And the undecomposed organic matter is oxidized and decomposed by ozone, active species and shock waves.

Next, the gas from which organic substances have been removed is released from the gas-liquid mixing section 2 into the atmosphere by the circulating water.

In the second embodiment, the circulating water is circulated, and the circulating water and the gas after the discharge treatment are mixed in the gas-liquid mixing section 2, so that the gas having a high organic matter concentration should be used. Even if introduced, unoxidized and undecomposed organic matter
It is taken into the circulating water, and has an advantage that the concentration of organic substances contained in the gas to be released is stabilized. In addition, unreacted ozone dissolves into the circulating water to oxidize and decompose organic substances taken into the circulating water, so that the efficiency of oxidation and decomposition is improved and there is little possibility that ozone is released into the atmosphere.

In the second embodiment, the circulating water is introduced into the discharge section 3. However, as shown in FIG. Even if it is introduced into the tank 20 to decompose the organic matter and introduced again into the upper part of the gas-liquid mixing section 2, it is within the range intended by the present invention. However, by introducing the circulating water into the discharge part 3, the organic matter absorbed by the circulating water is again converted into ozone, active species,
Can be oxidized and decomposed by shock waves.

The applications of the gas treatment apparatus and the gas treatment method of the second embodiment are not particularly limited, and include, for example, exhaust gas treatment, flue gas denitration, cyano-phenol treatment, deodorization of malodorous gas, and the like. Applied.

<Other Embodiments> In the first and second embodiments, the filler is filled in the gas-liquid mixing section 2. However, there may be no filler. However, by filling the filler, in addition to the above-mentioned effects, in the case of gas treatment, the gas and the circulating water are sufficiently mixed, and the organic matter in the gas is easily absorbed by the circulating water.

In the first and second embodiments, the gas-liquid mixing section 2 is provided. However, the provision of the gas-liquid mixing section 2 is not an essential requirement in the present invention. However, by providing the gas-liquid mixing unit 2, in the case of a water treatment apparatus, oxidation, decomposition, sterilization, and the like with ozone can be performed even in the gas-liquid mixing unit 2, and oxidation and decomposition of organic substances can be efficiently performed. It can be performed. That is, by contacting raw water with ozone that has not been reacted in the discharge unit 3, it is possible to efficiently oxidize and decompose organic substances. In the case of a gas treatment apparatus, unreacted ozone dissolves in the circulating water, and the organic matter dissolved in the circulating water can be efficiently oxidized and decomposed.

Furthermore, in the first and second embodiments, the electrodes 11 are provided in multiple stages inside the discharge unit 3, but the arrangement of the electrodes 11 is not limited to the above-described configuration. Even if only all the electrodes are arranged in a horizontal row, it is within the intended scope of the present invention. However, by arranging in multiple stages, the fluid (raw water, gas) and the electrode 11
This increases the chances of contact with, thereby improving the efficiency of oxidation and decomposition.

Further, in the above-mentioned embodiment, the object which oxidizes and decomposes the organic matter contained in the fluid, that is, the fluid containing the organic matter is treated, but the treatment object of the present invention is The fluid is not limited, and may be a fluid containing an inorganic substance such as iron or manganese. Even inorganic substances such as iron and manganese can be oxidized and can be removed in a later step such as filtration.

[0047]

Embodiments will be described below. Example 1 As raw water, about 50 m of isopropyl alcohol was added to pure water.
250 l (liter) of a simulated liquid dissolved at a rate of g / l
, And a TOC (total organic carbon amount) removal rate was measured using a water treatment apparatus substantially the same as that described in the first embodiment under the following treatment conditions. Treatment conditions, etc. Discharge power: Ｗ200 W Ozone generation amount: Maximum about 15 g / h Gas air volume: ２０20 m ³ / h Body material: SUS304 Treated water amount: ５5 m ³ / h The measurement results are shown in FIG.

Comparative Example 1 The water treatment apparatus used in Example 1 was used, and the electrode 1 of the water treatment apparatus was used.
1 and the like (hereinafter, referred to as “discharge unit 11”) were removed outside the apparatus, and ozone was generated outside the apparatus, and then ozone was introduced into the inside (a diffuser system). Then, the removal rate of TOC was measured. The measurement results are shown in FIG.

As is clear from FIG. 6, the discharge unit 1
1 (in which raw water is passed through the discharge unit 3) (Example 1) has a significantly improved TOC removal ability as compared with the diffuser type (Comparative Example 1). It is recognized that.

Embodiment 2 First, the gas processing apparatus used will be described. FIG.
As shown in the figure, the gas-liquid mixing section 2 which has a substantially prismatic shape and is filled with a filler in the upper stage, and the discharge unit 11 in the middle stage
In the lower part, a water receiving tank 21 for storing circulating water is provided, and the circulating water in the water receiving tank 21 is
This is a gas processing apparatus configured to pump up with a pump, pass through a pipe 18, and spray water from above the gas-liquid mixing section 2 with a water spray nozzle. Using this gas treatment apparatus, a gas containing formaldehyde was used as the gas (formaldehyde concentration: 200 ppm), and gas treatment was performed under the following treatment conditions.
The decomposition rate of the formaldehyde after the treatment was measured. Processing conditions, etc. Discharge power: ~ 200 W Ozone generation amount: Maximum about 15 g / h Gas introduction amount: 10 m ³ / h Body material: SUS304 Circulating water amount: 50 l / h The measurement results are shown in Table 1.

Comparative Example 2 As shown in FIG. 7 (b), the discharge unit 11 of the apparatus used in Example 2 was removed to the outside, and ozone was generated by an external ozone generator 22. Was subjected to gas treatment under the same conditions as in Example 2 except for injecting into the water receiving tank, and the decomposition rate of formaldehyde after the treatment was measured.
Table 1 shows the measurement results.

[0052]

[Table 1]

As is clear from Table 1, the apparatus in which the discharge unit 11 is provided in the apparatus (the apparatus in which gas is passed through the discharge unit 3) (Example 2) is of the diffuser type (Comparative Example 2). It can be understood that the TOC removal ability is greatly improved as compared with

[0054]

As described above, according to the present invention, by causing the fluid to pass through the discharge part, active species and shock waves generated simultaneously with ozone can also act on the fluid, and should be treated. Organic substances or inorganic substances such as iron and manganese in the fluid can be efficiently decomposed or oxidized. In addition, the active species and the power causing the shock wave are effectively used, so that the processing time can be reduced and the running cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an embodiment of the present invention.

FIG. 2 is a schematic perspective view showing the electrodes and the arrangement of the electrodes according to the embodiment;

FIG. 3 is a schematic diagram showing an embodiment of the present invention.

FIG. 4 is a schematic diagram showing another embodiment of the present invention.

FIG. 5 is a schematic process diagram showing another embodiment of the present invention.

FIG. 6 is a graph showing measurement results of Example 1 and Comparative Example 1.

7A is a schematic diagram of an apparatus used in Example 2, and FIG. 7B is a schematic diagram of an apparatus used in Comparative Example 2.

FIG. 8 is a schematic diagram showing another embodiment of the present invention.

FIG. 9 is a process chart showing a conventional water treatment method.

[Explanation of symbols]

 3 ... discharge part, 11 ... electrode

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4D002 AA12 AA15 AA21 AA32 AB02 BA02 BA05 BA07 CA01 DA35 DA51 EA02 EA03 4D038 AA01 AA08 AB07 AB09 AB11 AB14 AB66 BA02 BA04 BB16 BB17 BB18 BB20 4D050 AA03 AB13 AB AB19 AB55 BB02 BC10 BD02 BD04 BD06 CA06 CA15 CA16 4G042 CA01 CB01

Claims (4)

[Claims] 1. A fluid processing method comprising passing a fluid containing an organic substance or an inorganic substance such as iron or manganese through a discharge section (3) for generating ozone by discharging. 2. Prior to passing said fluid through a discharge section (3),
The fluid treatment method according to claim 1, wherein the ozone generated from the discharge unit (3) is caused to flow in a direction opposite to a flowing direction of the fluid through a gas-liquid mixing unit (2) filled with a filler. 3. The method of claim 1, wherein the discharging comprises applying a voltage pulse to the electrode
3. The fluid treatment method according to claim 1, wherein the fluid treatment method is caused by acting between them. 4. A fluid processing apparatus comprising discharge processing means for passing a fluid containing an organic substance or an inorganic substance such as iron or manganese to a discharge section (3) for generating ozone by discharging.