KR20040069718A - The resolution method of the non-resolutive material - Google Patents

Abstract

PURPOSE: A method for decomposing non-biodegradable materials is provided which improves wastewater treatment efficiency by decomposing the non-biodegradable materials using biodegradable materials, thereby removing the non-biodegradable materials. CONSTITUTION: The method is characterized in that harmful materials including various organic matters are removed, and non-biodegradable materials including salt are converted into biodegradable materials to be removed by passing wastewater through an additional reaction tank(1) in which catalyst mixtures(11) are filled before and after main reaction, into which electrodes(12a,12b) are inserted, and in which ultrasonic generators(16) are installed, and ultraviolet lamps(17a,17b) are inserted between the catalyst mixtures in such a way that DC power is impressed to the electrodes, thereby using the catalyst mixtures as an electricity medium and promoting decomposition reaction in the catalyst mixtures.

Description

The resolution method of the non-resolutive material}

The present invention provides a method of decomposing hardly decomposable substances, in particular, by removing harmful components contained in high concentration organic wastewater or wastewater containing hardly decomposable substances having high COD and high phosphorus and nitrogen compounds, and converting the hardly decomposable substances into degradable substances. The present invention relates to a method for decomposing hardly decomposable substances for supplying purified water by removal. In a known wastewater treatment method, a catalyst mixture is filled before and after the present reaction while being aerated using air and iodine having a high content of ions. The electrode is inserted and passed through an additional reactor in which an ultrasonic generator is installed and an ultraviolet lamp is inserted between the catalyst mixtures. In some cases, at least one of acetone, hydrogen peroxide, and methanol is additionally used to aeration the electrode. The catalyst was powered by applying a low voltage (1.2V to 48V) DC power supply. Hazardous substances such as macromolecules, nitrogen compounds, phosphorus compounds, etc. are used as individuals and by promoting the decomposition reactions in catalysts to remove harmful substances including various organic substances and converting non-degradable substances including salts into degradable substances. Of course, it is possible to effectively remove the hardly decomposable substances, to prevent overload of the wastewater treatment apparatus, and to operate economically, and since the catalytic reaction occurs continuously, it is possible to obtain the long-term use of the wastewater treatment apparatus. It relates to a decomposition method.

With the rapid increase of the urban population and the rapid development of various industries, the pollution of the living environment is getting serious, and the pollution by sewage and industrial wastewater is the most urgent threat that threatens the healthy life of human beings and the life of the organisms of the natural world. It's one of the problems.

Currently, the wastewater treatment method is largely divided into physical, chemical, and biological methods. Among them, biological treatment methods are known to be suitable for treatment of wastewater containing a large amount of organic compounds.

However, high concentrations of organic wastewaters with high COD, high SS, and high nitrogen and phosphorus compounds are not only diverse but also transferable, including livestock wastewater, landfill leachate, and organic wastewater from various chemical manufacturing plants. When many of them are treated by biological treatment methods as they are, the treatment efficiency is lowered, as well as the growth of microorganisms as well as the death problem occurs, there is a problem such as problems in the efficiency of the device.

For example, livestock wastewater is a difficult-to-treat wastewater that is difficult to treat with high concentrations of organic wastewater, has a bad odor, and livestock farms are concentrated more upstream than water sources, so surface water and soil, as well as water supplies, are very serious. The situation is contaminated.

Conventional methods for treating livestock wastewater are treated with several chemical treatment methods and then treated with biological treatment methods, in which the solids and liquids discharged are composted into solid fertilizers and liquid fertilizers, respectively. Methods are carried out in a way that reduces the land.

However, the above methods not only have low efficiency, but also have a problem of securing a large area for installing the wastewater treatment apparatus, and require a manager to manage the process smoothly, the apparatus is complicated, and the scale is not suitable for practical application. There is this.

On the other hand, various methods such as SBR (Sequential Batch Reactor) method, an anaerobic-aerobic process, AO (anaerobic aerobic activated sludge method), A2O method, and intermittent aerated activated sludge method are developed for wastewater treatment. have. However, these methods are a method that can be applied to general wastewater having a low concentration of pollutants as a method of processing by aeration tank, anaerobic tank and anoxic tank, or by sludge return and internal return. In addition, there is a problem such as limiting the amount of load, securing of active microorganisms, economic efficiency, etc. is not being effectively applied to high concentration organic wastewater treatment.

In recent years, research and attention has been focused on a biological film process using an immobilized carrier. Currently, biofilm method is widely used for small and medium-sized sewage treatment. Compared with activated sludge method, it is easy to maintain and has strong advantages in influx load fluctuations and does not cause sludge swelling, but it uses biofilm by adherent microorganisms. As a result, the treatment of high concentration organic wastewater has difficulty in securing stable water quality due to problems such as biofilm desorption due to excessive growth of microorganisms and clogging of pores according to types of media.

In addition, most wastewater treatment methods have a very low treatment efficiency of hardly decomposable substances, and the COD content of the treated waters is practically high, and since the hardly decomposable substances are not decomposed and removed, the treatment efficiency may actually be reduced. In addition, the problem of environmental pollution due to hardly decomposable substances is serious.

Accordingly, an object of the present invention is to provide a decomposition method of a hardly decomposable substance which can improve wastewater treatment efficiency by decomposing and removing the hardly decomposable substance into a decomposable substance.

Another object of the present invention is to remove harmful components and hardly decomposable substances from high concentration organic wastewater, especially wastewater having high COD, high SS content, nitrogen compounds and phosphorus compounds or wastewater containing hardly decomposable substances by using the method of the above object. It is to provide a wastewater treatment method for purification.

Still another object of the present invention is to provide a wastewater treatment method capable of obtaining a long-term use of the wastewater treatment apparatus because the catalytic reaction occurs continuously while the wastewater or air treatment efficiency is excellent.

In order to achieve the above-mentioned objects as well as other objects that can be easily expressed, the present invention uses a well-known wastewater treatment method, wherein the catalyst mixture is filled before and after the present reaction while aeration using air and iodine with a high content of ions. And the electrode is interpolated, an ultrasonic generator is installed, and an additional reactor through which an ultraviolet lamp is inserted between the catalyst mixtures. In some cases, at least one of acetone, hydrogen peroxide, and methanol is additionally used to aeration the electrode. By applying a 1.2 ~ 48V DC power supply, the catalyst is used as an electric medium, and the decomposition reaction in the catalyst is promoted to remove harmful substances including various organic substances, and to convert non-degradable substances including salt into degradable substances. Macromolecular organics, nitrogen compounds and phosphorus compounds Of course, it is possible to effectively remove harmful substances, as well as to prevent the overload of the wastewater treatment device, and to operate economically, and to perform the catalytic reaction continuously so that the wastewater treatment device can be used for a long time.

1 is a schematic conceptual diagram of a wastewater treatment apparatus applied to the method of the present invention,

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

* Explanation of symbols for the main parts of the drawings

1: addition reactor 2: ionization air generator

3: iodine reservoir 4: acetone reservoir

5: hydrogen peroxide storage tank 6: methanol storage tank

7: Power supply part 8a-8g: Control valve

9a-9e: Aeration pump 11: Catalyst mixture

12a, 12b: electrode 13: width pipe

14 wastewater inlet 15 treated water discharge pipe

16: ultrasonic generator 17: ultraviolet lamp

21: air inlet 22: air outlet

23 body 24 anode

25: negative electrode 26: catalyst mixture molded body

27: coupling member

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a schematic conceptual diagram of a wastewater treatment apparatus to which the method of the present invention is applied.

The decomposition method of the hardly decomposable substance according to the present invention is a known wastewater treatment method, wherein the catalyst mixture 11 is filled before and after the main reaction and aerated using air and iodine having a high content of ions, and the electrodes 12a and 12b. ) Is passed through the addition reactor (1) in which the ultrasonic generator (16) is installed and the ultraviolet lamps (17a, 17b) are inserted between the catalyst mixtures (11), and at least among acetone, hydrogen peroxide, and methanol. The catalyst mixture 11 is used as an electric medium by accelerating the decomposition reaction in the catalyst mixture 11 by applying a DC power source of 1.2 to 48V to the electrodes 12a and 12b while aeration using one or more kinds. In addition to the removal of harmful substances including various organic substances, it is characterized by converting and removing the hardly decomposable substances including salts into degradable substances.

The wastewater treatment apparatus to which the method of the present invention is applied is roughly an addition reactor (1), an ionized air generator (2), an iodine reservoir (3), an acetone reservoir (4), a hydrogen peroxide reservoir (5), a methanol reservoir (6), and It is composed of a power supply unit 7, the addition reactor (1) may be provided with a water level regulator 18, if necessary, flow rate control pipe for returning the waste water when excess waste water flows into the addition reaction tank (1) 19 is installed, the flow rate control valve 10 may be installed in front of the waste water inlet (14).

The level controller 18 has a built-in detection means to detect the change in the water level and to operate the flow control valve 10 so that the water level is almost always constant.

In addition to the above-mentioned reaction tank 1, all the pretreatment means commonly used in the technical field to which the present invention belongs may be used.

The addition reactor 1 has a wastewater inlet 14 and a treated water discharge pipe 15 formed therein, the catalyst mixture 11 is filled, the electrodes 12a and 12b are interpolated, the ultrasonic generator 16 is installed and the catalyst Ultraviolet lamps 17a and 17b are inserted between the mixtures 11, and an aeration pipe 13 is installed in the lower part for aeration, and the air generated from the ionization air generator 2 and the iodine storage tank 2 Iodine must be aerated from 3) and at least one of acetone, hydrogen peroxide from the peroxide storage tank (5), hydrogen peroxide from the methanol storage tank (6), and at least one of methanol from the acetone storage tank (4) may be aerated in some cases. .

In the middle of the pipe 13, control valves 8a, 8a ', 8b, 8b', 8c, 8d, 8e, 8f, 8g and pumps 9a, 9b, 9c, 9d, 9e are provided. It controls the amount of air generated from the generating tank (2), the amount of iodine from the iodine storage tank (3), acetone from the acetone storage tank (4), hydrogen peroxide from the hydrogen peroxide storage tank (5) and methanol as necessary. The amount of at least one or more mixtures of methanol from the reservoir 6 can be adjusted.

The electrodes 12a and 12b may use conventional plate-shaped electrodes or rod-shaped electrodes, and may be variously manufactured according to the shape of the treatment tank.

The ultrasonic generator 16 is installed so that the surface on which the ultrasonic wave is generated is directed toward the catalyst mixture 11, and all ultrasonic generators commonly used in the art to which the present invention pertains may be used.

At least two ultraviolet lamps 17 may be installed, and at least one lamp is installed in a space divided by a partition wall in the additional reactor 1, and any one having a wavelength of 100 to 400 nm may be used. It is possible.

At least one additional reaction tank 1 may be provided, and may be formed in multiple stages depending on the characteristics of the wastewater, the amount of the treated water, the treatment place, and the like.

The ionization air generator (2) is for supplying air to the addition reaction tank (1), but through the high-pressure electrode of several KV or more to supply air with a high content of ions to maximize the treatment efficiency of the waste water, the insulating material 28 and A compartment is formed by the body 23, and an air inlet 21 and an air outlet 22 are formed, and the anode mixture 24 and the cathode 25 are formed by using the coupling member 27 to form the catalyst mixture compact 26. ), But the positions of the pores 29 and 29 'formed in the anode 24 and the cathode 25 coincide with each other.

Iodine reservoirs (3), acetone reservoirs (4), hydrogen peroxide reservoirs (5) and methanol reservoirs (6) store solid iodine and gaseous acetone, hydrogen peroxide and methanol and contain gaseous iodine, acetone, hydrogen peroxide or methanol Is supplied in an amount of about 2 millimoles per 10 liters of wastewater.

The power supply unit 7 supplies power to the positive electrode 24 and the negative electrode 25 of the electrodes 12a and 12b of the additional reaction tank 1 and the ionizing air generating tank 2, but according to the type and property of the wastewater. For the electrodes 12a and 12b of the addition reactor 1, a DC power source of 1.2 to 48V, preferably a power source of about 9 to 24V is supplied to the electrodes 12a and 12b of the wastewater, and a power source of about 36V for benzene. A high voltage DC power supply of several KV or more is applied to the positive electrode 24 and the negative electrode 25 of the generator 2.

Control valves 8c, 8d, 8e, 8f, 8g between ionizing air generator (2), iodine reservoir (3), acetone reservoir (4), hydrogen peroxide reservoir (5), methanol reservoir (6) and pump (9) ), But the air generated from the ionization air generator (2), the iodine from the iodine reservoir (3) must be supplied, if necessary, acetone from the acetone reservoir (4), hydrogen peroxide from the hydrogen peroxide reservoir (5) The amount of at least one or more of methanol from the methanol reservoir 6 is adjusted to be the most ideal mixture.

On the other hand, in the case of a large capacity, as shown in Figure 2, the structure of the addition reactor (1) can be arranged vertically to treat a large amount of wastewater and at the same time minimize the space required for the wastewater treatment facility.

The additional reaction tank 1 configured as described above is installed before and after the main reaction tank in the known wastewater treatment apparatus. Looking at the process of treating the wastewater through this, the wastewater inlet port before or after the main reaction tank in the known wastewater treatment apparatus ( 14) and the addition reaction tank (1) is connected and installed by using the treated water discharge pipe (15).

At this time, if it is installed before the main reaction tank is used for pretreatment of the main reaction, if it is installed after the main reaction tank is used for post-treatment.

First, when wastewater flows into the additional reaction tank 1 through the wastewater inlet 14, direct current power is applied to the electrodes 12a and 12b, and the catalyst mixture (eg, low voltage direct current power applied to the electrodes 12a and 12b) is applied. As 11) is electrolyzed, organic matter is decomposed and removed, and many pollutants in the wastewater are removed and hardly decomposable substances are decomposed into decomposable substances.

At this time, adjust the DC voltage of the electrode according to the type and characteristics of the incoming wastewater, but in the case of wastewater containing a substance that is easy to decompose, about 1.2 to 12V, usually about 12 to 24V, it contains substances that are difficult to decompose. In the case of the wastewater, a voltage of about 24 to 36V is applied. In some cases, it is necessary to apply a voltage of about 48V, and the wastewater amount of the addition reactor 1 is detected by the water level regulator 18. According to the flow control valve 10 is automatically opened and closed to adjust the flow rate.

In addition, a small amount of iodine, acetone, hydrogen peroxide and methanol is introduced from the iodine storage tank (3), the acetone storage tank (4), the hydrogen peroxide storage tank (5) and the methanol storage tank (6) to promote the oxidation reaction of the organic matter, thereby increasing the concentration of organic matter. The decomposition of various pollutants in the waste water as well as the conversion of harmful pollutants to non-hazardous ones.

In addition, the air containing a large amount of ions promoting electrolysis from the ionizing air generator 2 is introduced to aeration to maximize the pollutant treatment efficiency.

The ionization air generating tank 2 is ozone-oxidized by ozone generated by a high voltage of several KV or more, and increases oxidation reaction and generates air having a high content of ions. The catalyst mixture molded body 26 formed by mutually bonding with a binder is bonded to the positive electrode 24 and the negative electrode 25 by the coupling member 27, and a high voltage is applied from the power supply unit 6 while the catalyst mixture molded body 26 and the air are applied. Touches and the components in the air are ionized.

If the wastewater treatment efficiency is not satisfactory after the first treatment, the additional reaction tank 1 may be installed in multiple stages to improve the treatment efficiency.

The catalyst mixture 11 is preferably composed of 80 to 90% by weight of carbon, 5 to 10% by weight of iron oxide (Fe ₂ O ₃ ), and 5 to 10% by weight of magnesium. Happens.

In the catalyst mixture, activated carbon is used as the carbon, and when carbon is used in excess of 90% by weight, current flows too much, which improves performance, but overloads the power supply, and iron oxide is used in excess of 10% by weight. If the redox reaction is effective, but there is a problem of secondary pollution due to the generation of a lot of iron ions, if the magnesium is used in excess of 10% by weight has a disadvantage that is not economical, the three When the catalyst components are each used in less than the above ratio, there is a problem that the wastewater treatment efficiency is lowered.

Looking at the operation of each step in the method of the present invention made as described above are as follows.

The reaction is performed by applying electricity to the catalyst mixture 11 containing 80 to 90% by weight of carbon, 5 to 10% by weight of iron oxide (Fe ₂ O ₃ ), and 5 to 10% by weight of magnesium, without containing any liquid components such as any solvent. This continuously occurs, so that the pollutants in the wastewater can be easily oxidized and decomposed and removed, and the catalyst efficiency can be maintained for a long time due to the repeated action of oxidation and reduction of the pollutants. .

The reaction when applying electricity to the electrodes 12a and 12b of the addition reactor 1 containing the catalyst mixture 11 mixed with carbon, iron oxide and magnesium is carried out by the mediated electrochemical oxidation (MEO) and the semiconductor theory. As described above, instead of the electrolytic solution, the above-described solid catalyst, activated carbon (carbon), or magnesium and direct current may be modified by a modified MEO process.

Each catalyst particle is distributed in the positive electrode and the negative electrode by using activated carbon and iron oxide adhered to the activated carbon as a catalyst.

The oxidant produced at the anode reacts with the organic matter adsorbed on the numerous micropores in the activated carbon itself, which oxidizes and decomposes the organic material, and then oxidizes the organic material continuously by being oxidized at the anode. As a water-soluble process to be used, organic matter is almost completely destroyed through this, and carbon and hydrogen in the organic material are converted into carbon dioxide and water, and almost all of them are mineralized. The process also has the ability to dissolve radioactive materials in mixed wastes that contain chemicals and are radioactive.

On the other hand, when water is removed from the reaction in which water is generated, the reaction is accelerated, and water in the vicinity of the electrodes 12a and 12b is easily removed, thereby allowing the air to be introduced, thereby promoting the reaction by magnesium, which is a metal lacking oxygen.

Mg _x-1 + H ₂ O → Mg _x O + H ₂

Therefore, the effect of the enhancer is increased by removing the moisture around the electrodes 12a and 12b by magnesium.

Oxygen present on the surface of magnesium can attract protons, so oxygen can act basic, and the second ionization potential is greater than its first ionization potential because electron removal from cations is more difficult than ionization of neutral atoms.

⁺ Mg (g) → Mg ²⁺ + e ^-

Thus, a metal oxide catalyst such as magnesium is used to remove high molecular weight organic matter and ozone, and not necessarily limited to magnesium, and all metal oxides having the above functions can be used, but magnesium is particularly preferable.

On the other hand, the desorption reaction causes oxygen in the acid gas generated during decomposition of organic matter to combine with carbon of activated carbon to cause an oxidation reaction, and desorption reaction proceeds in the capillary of activated carbon, which causes loss of carbon component of activated carbon. In this case, the specific surface area of the capillary tube is increased, and the adsorption performance is improved while repeating adsorption and desorption. The loss of adsorbent caused by the reaction of oxygen in the adsorbed acid gas with carbon of activated carbon to produce carbon dioxide (CO ₂ ) is compensated.

Activated carbon is mostly carbonaceous charcoal with strong adsorption, and adsorption is a kind of interfacial phenomenon in which powdery substances such as activated carbon or silica gel absorb contaminants to the surface. The surface area of the material must be large. Activated charcoal has a large number of pores, the total area of its thin pore wall, or surface area, usually 500 to 150 m ² per gram, and it adsorbs so many chemicals that it is used as a deodorant for refrigerators. The adsorption components are not only influenced by the fine pore structure but also by the chemical properties of the activated carbon surface. When activated carbon is added to the waste water and stirred, the concentration of organic matter in the water is significantly reduced. This is because activated carbon adsorbs them. Since activated carbon is made of wood, coal, etc. as a raw material, its original main ingredient is organic matter.

Referring to the electrolysis in the addition reactor 1, the oxidant produced on the surface of the anode reacts with the organic material to oxidatively decompose the organic material, and at the same time, it is reduced again and then regenerated by being oxidized on the electrode surface to continuously produce the organic material. As a process that uses the principle of oxidization, organic matter is completely destroyed and ultimately carbon and hydrogen in the organic material are converted into carbon dioxide and water, which is almost always inorganic.

In the reaction of positive electrode ^{_{H 2 O → H + + OH}} - , and the pH a reduction in the increase in the ion H ⁺ ions decrease, ^electron-in scheme of OH (Electron: e ^-) is increased oxidative I got lost. In addition, by the electrolysis reaction, Cl ₂ (chlorine gas) becomes a gas at the anode and is released into the atmosphere, and hypochlorous acid (HOCl) is generated.

^{_{H 2 O → H + + OH}} -

NaCl → Na ^{+ +} Cl ^-

_{^{4OH - → 2H 2 O + O}} 2 + 4e -

2Cl ^- → Cl ₂ + 2e ^-

_{Cl 2 + H 2 O → HOCl} + H + + Cl -

In the reaction of the negative electrode H ₂ O → H ⁺ + OH ^-, and the pH is raised to increase the ion with H ⁺ reduction of the ion, ^electron-in scheme of OH (Electron: e ^-) increased reducing power is increased, the hydrogen gas Is generated.

^{_{H 2 O → H + + OH}} -

NaCl → Na ^{+ +} Cl ^-

_{2H 2 O + O 2 + 4e} - → 4OH -

Na ^{+ +} e ^- → Na

Na + OH → NaOH

In addition, the oxidation and neutralization of the basic material and the neutral material is performed by the acidic oxidation water generated at the anode.

* Basic substances

2NH ₃ + 3HOCl → N ₂ + 3HCl + 3H ₂ O

NH ₃ + HCl → NH ₄ Cl

(CH ₃ ) ₃ N + HOCl → (CH ₃ ) ₃ NO + HCl

* Neutral

(CH ₃ ) ₂ S + 3HOCl → (CH ₃ ) ₂ SO ₃ + 3HCl

CH ₃ CHO + HOCl → CH ₃ COOH + HCl

C ₆ H ₅ CHCH ₂ + HOCl → C ₆ H ₅ CHOHCH ₂ Cl

In addition, the following reactions occur by the alkaline reduced water produced in the negative electrode.

H ₂ S + NaOH → N ₂ S + H ₂ O

Na ₂ S + H ₂ S → 2NaSH

CH ₃ SH + NaOH → CH ₃ SNa + H ₂ O

CH ₃ COOH + NaOH → CH ₃ COONa + H ₂ O

And organophosphorus compounds are processed by hydrolysis (electrolysis).

In other words, a tertiary ester there is discharged to the phosphorus and alcohol by hydrolysis, base catalysis is [OH ^-] and is primarily by both the reaction of the ester concentration-oxygen bond is decomposed, the reaction of carbon acid ester Is hydrolyzed by a base catalyst, and if there is a substituent which provides positive charge to phosphorus by interaction with oxygen having high electronegativity and increases the electrophilicity of phosphorus, the hydrolysis rate is increased, and the decomposition product of organophosphate Becomes phosphorus and alcohol.

Since the bubbles generated on the surface of the electrode by the electrochemical decomposition reaction in the addition reactor 1 become a factor that slows down the electrochemical reaction by moving the current, an ultrasonic generator 16 is installed to remove the bubbles. .

Ultrasonic waves generated from the ultrasonic generator 16 quickly remove bubbles generated on the surface of the electrode, thereby speeding up the movement of current to promote the electrochemical decomposition reaction, and speeding up the ion transfer rate to the electrode surface. It can be increased, thereby effectively removing the products and by-products generated and attached to the electrode surface.

On the other hand, when a material absorbs light, a chemical reaction occurs by the energy of the light. According to quantum theory, the energy of photon E is related to its frequency (V), where E = hV, and h is Planck's constant. (6.6239 x 10 ^-27 erg).

In addition, the frequency v has a relationship between the wavelength i and i = c / v, where C is 2.279 x 10 ¹⁰ cm / sec at the speed of light.

E of ultraviolet rays (UV rays) having a wavelength of 100 to 400 mm is easily calculated in the above formula.

Ultraviolet rays generated from the ultraviolet lamp 17 react with ozone to produce highly oxidizing hydroxy radicals, which mainly cleave C = C double bonds.

Formaldehyde is generated by photochemical reactions in the following reactions.

HCOH + hv → H ₂ + CO → H + HCO

HCOH + OH → HCO + H ₂ O

HCO + O ₂ → HO ₂ + CO

CH ₃ COOH + hv → CH ₃ O + OH

CH ₄ + OH → CH ₃ + H ₂ O

In addition to the above chemical action, ultraviolet light has a bactericidal action, and has a bactericidal power, so that when 1 minute of UV light having an intensity of 100㎼ per 1 cm ² is killed for 99% of Escherichia coli, diphtheria bacteria, and dysentery bacteria.

When a protein reacts with iodine, the protein is broken down by moisture in iodine and air.

Recently, studies have been reported in which allylglycine is introduced at a specific site using an inhibitory t-RNA, and the protein is degraded using iodine (J. Am. Chem. Soc. 2000, 122, 7402

In other words, when allylglycine is introduced at a specific position and reacted with iodine, a ring intermediate formed by iodine is formed, which is divided into two peptides having a lactone and an amine by reacting with water.

This decomposition depends largely on the location of the allylglycine that is introduced, which is determined by how well the water in the air is accessible.

By this reaction, trypsinogen, a precursor protein, is changed to trypsin, an active protein.

The complex action of acetone and hydrogen peroxide is as follows.

H ₂ O ₂ ↔ H ⁺ + HO ₂

^{_{CH 3 COCH 2 + H + +}} H and HO ₂ ^-

CH ₃ COCH ₂ + H ⁺ + H ₂ O ₂

_{CH 3 COCH 3 + H 2 O} 2 -

When acetone is used alone, one hydrogen atom moves to an oxygen atom in the CH ₃ atom group.

CH ₃ -CO-CH ₃ ↔ CH ₃ -COH-CH ₂

CH ₃ COCH ₂ + H ⁺ → CH ₃ -COH-CH ₂ → CH ₃ COCH ₃

CH ₃ -CO-CH ₃ ↔ CH ₃ -COH-CH ₂

→ CH ₃ COCH ₃

The generated OH radical hydroperoxide oxy radical into an intermediate-producing material (Hydroperoxy radical: HO ₂ ^-) and the superoxide radical (Superoxide radical: O ₂ ^-) to generate and quickly decompose many organic substances of the water contamination, the organic compound It increases biodegradability and suppresses the production of sludge.

^{_{HO 2 → H + + O 2}} -

When hydrogen peroxide alone is used, it has the following effects.

OH + H ₂ O ₂ → HO ₂ + H ₂ O

_{^{OH + HO 2 - → OH -}} + HO 2

^{_{CO 3 - + H 2 O 2}} → HO 2 + HCO 3

In addition, iron oxide decomposes organic compounds in wastewater by powerful oxidation and reduction as already known, and can be used for a long time by automatically repeating oxidation and reduction reactions by electrodes.

In addition, when methanol is added to water, generation of hydrogen is increased because OH or O ₂ generated from water due to electrolysis acts on the oxidation of methanol as follows.

CH ₃ OH + H ₂ O → CO ₂ + 2H ₂ + H ₂ O

Therefore, when the hydrogen donor necessary for denitrification is absolutely insufficient, it is necessary to inject methanol from the outside, and an example of the reaction at this time is as follows.

3NO ₃ + 14CH ₃ OH → 3N ₂ + 7H ₂ O + 6OH

On the other hand, the air generated from the ionizing air generator 2 contains a large amount of ionized oxygen and hydrogen atoms, which are used to aeration the wastewater to promote the decomposition of organic materials as well as the oxidation of various organic materials and harmful substances. This improves the efficiency of wastewater treatment.

A catalyst mixture molded body which is introduced into the air inlet 21 of the ionization air generator 2 and is moved to the air outlet 22, but is coupled to the positive electrode 24 and the negative electrode 25 by the coupling member 27. When high-pressure direct current electricity is applied to (26), contaminants such as air impurities and organic matters are decomposed and removed by the catalytic action, and air having a high content of ionized oxygen and hydrogen is introduced into the addition reaction tank (1).

When the high concentration organic wastewater was treated by the addition reactor (1) connected by the multi-stage by the above action, more than 80% of nitrogen compounds were removed on average, and more than 90% of phosphorus compounds were removed. COD removal rates averaged over 80%.

As described above, in the present invention, in the known wastewater treatment method, the catalyst mixture is filled before and after the reaction, the electrode is interpolated, the ultrasonic generator is installed, the catalyst mixture is aerated using air and iodine with a high content of ions. The catalyst is passed through an additional reactor in which an ultraviolet lamp is inserted in between, and in some cases, at least one of acetone, hydrogen peroxide, and methanol is additionally aerated to apply a DC power source of 1.2 to 48V to the electrode, thereby providing an electrical medium. It is used to remove harmful substances including various organic substances by promoting decomposition reactions in catalysts, and to convert non-degradable substances including salts into degradable substances. Of course, it effectively removes non-degradable substances, lungs And to allow for economical operation to prevent overload of the processing apparatus, the catalytic reaction take place continuously, so there can be obtained an effect which can be used for waste water treatment apparatus for long periods of time.

Claims (7)

In the known wastewater treatment method, before and after the main reaction, the catalyst mixture 11 is filled, the electrodes 12a and 12b are interpolated, the ultrasonic generator 16 is installed, and the ultraviolet lamp 17a between the catalyst mixtures 11. , 17b) is passed through the addition reactor (1), the DC power is applied to the electrodes (12a, 12b) by using the catalyst mixture (11) as an electrical medium to promote the decomposition reaction in the catalyst mixture (11) A method of decomposing a hardly decomposable substance, characterized by removing harmful substances including various organic substances and converting and removing the hardly decomposable substance including salt into a decomposable substance. The method for decomposing hardly decomposable substances according to claim 1, which is used as a pretreatment step before the present reaction of wastewater treatment. The method for decomposing hardly decomposable substances according to claim 1, which is used as a post-treatment step after the main reaction of wastewater treatment. 2. The air according to claim 1, wherein the air has a high content of ions from the ionizing air generator 2, iodine from the iodine reservoir 3, acetone from the acetone reservoir 4, hydrogen peroxide from the hydrogen peroxide reservoir 5, methanol A method for decomposing hardly decomposable substances, characterized in that the reaction is carried out by aeration using at least one or more of methanol from the reservoir (6). 2. The acetone from the acetone storage tank 4 and the hydrogen peroxide storage tank 5 according to claim 1, wherein the air having a high content of ions from the ionizing air generating tank 2 and the iodine from the iodine storage tank 3 are essentially used. A method for decomposing hardly decomposable substances, characterized in that the reaction is carried out by aeration using at least one of hydrogen peroxide from and methanol from the methanol storage tank (6). The method for decomposing hardly decomposable materials according to claim 1, wherein a DC power source of 1.2 to 48V is applied to the electrodes (12a, 12b). The method of claim 1, wherein the catalyst mixture is composed of 80 to 90% by weight of carbon, 5 to 10% by weight of iron oxide, and 5 to 10% by weight of magnesium.