KR20040038457A - Auto control apparatus of ozone process and AOP(Advanced Oxidation Process) using TOC(Total Organic Carbon) and method thereof - Google Patents

Abstract

PURPOSE: Provided is an apparatus and a method for automatically controlling an ozone /advanced oxidation process using total organic carbon as an index factor. CONSTITUTION: The apparatus comprises a raw water inlet pipe(1), a liquid flow meter (LFM)(3) for detecting flow rate of raw water, an ozone/advanced oxidation contact tank(2) for bringing ozone or hydrogen peroxide into contact with the raw water to cause reaction, a sensor(4) for detecting total organic carbon (TOC) in the raw water, a control unit(9) for controlling feeding rate of ozone and hydrogen peroxide to be introduced into the contact tank(2) based on data of the TOC and raw water flow rate detected by the sensor(4) and the LFM(3), respectively, and an ozone generation unit(7) for generating and supplying ozone to the contact tank(2) in response to a control signal transmitted from the control unit(9).

Description

Automatic control apparatus of ozone process and advanced oxidation process using total organic carbon {Auto control apparatus of ozone process and AOP (Advanced Oxidation Process) using TOC (Total Organic Carbon) and method

The present invention relates to an apparatus and method for automatically controlling the ozone process and the advanced oxidation process (AOP) using total organic carbon (TOC) of influent water in water treatment systems, such as water treatment, sewage treatment and wastewater treatment, in particular the inflow of influent Ozone and Advanced Oxidation (AOP) using total organic carbon (TOC) which calculates the injection concentration of ozone and hydrogen peroxide, which are key operating factors of ozone and advanced oxidation processes, from the total organic carbon concentration Process and automatic control device and method.

Ozone treatment, a technology that treats raw water with ozone (O3), is a water treatment that removes impurities from water with ozone, a strong oxidizing power. This treatment is performed by using reactivity with sterilization, deodorization, decolorization, oil and inorganic substances, which are characteristics of ozone due to oxidizing power, and have an excellent water treatment effect compared to oxidation treatment such as chlorine treatment.

In addition, ozone has various advantages over other oxidizing agents such as chlorine in process installation and operation and oxidizing power, and can also remove some heavy metals such as iron and manganese, and pollutants such as phenol and hardly decomposable substances. It is known to have an excellent effect on the removal of substances, and also to remove organic substances in water. In addition, there is an advantage that it does not produce trihalomethane (THM), a carcinogen that may occur when using chlorine, and there is no unique smell as in chlorine.

Therefore, a lot of water treatment technologies using oxidizing power of ozone have been studied. Generally, water treatment technology using oxidizing power of ozone produces more ozone processes using ozone alone and more OH radicals that affect oxidation power during ozone treatment. In order to improve the oxidative power by injecting hydrogen peroxide (H2O2) simultaneously with ozone, the advanced oxidation process (AOP) is widely used, and the pH is adjusted as a control factor to generate more OH radicals in the advanced oxidation process (AOP). Some people irradiate ultraviolet rays (UV).

Among these, the ozone process is divided into pre-ozone process and post-ozone process according to the location of installation in the whole water treatment system. Advanced oxidation process is a technology that is being put into practical use at present.

In the case of the all ozone process, it was introduced to improve the coagulation and sedimentation efficiency, to remove iron and manganese, to remove algae, to remove taste and odor-causing substances, and to remove color, and the after ozone process to remove trace organic pollutants. It was introduced to increase the biodegradability of hardly degradable organic substances, to remove the trihalomethane precursor (THMFP), a carcinogen, and to disinfect pathogenic microorganisms.

On the other hand, in the ozone process, the real-time control of the ozone injection concentration is not performed according to the change of the inflow water quality, and the evaluation of the treatment efficiency is insufficient because it is difficult to evaluate the efficiency and operability during the ozone treatment. In addition, the impact on the biologically activated carbon (BAC) process, which is a successor to the after ozone process, is unclear, and thus, the field worker complains a lot of difficulties in setting an appropriate injection concentration, and is caused by the excessive injection of ozone. There is a problem that the control method of the oxidized by-product is not established. In addition, the change in inflow flow rate is not reflected, and the ratio of inflow flow rate to ozone injection flow is excessively changed, resulting in the possibility of overinjection of ozone, adverse effects on the subsequent bioactive carbon process, and overproduction of oxidative by-products. The likelihood was also very high.

In general, the control method of the ozone process is based on the results obtained from pilot experiments carried out in the basic design and the implementation design stage when the facility is introduced. The constant ozone concentration constant control method is used to keep the residual ozone concentration constant, and the ozone injection amount is controlled by the ozone generation concentration of the ozone generator and the air volume of the ozonated air.

In the ozone process and the advanced oxidation process, the selection of the control factor is very important for the construction of the automatic control system, and a lot of time and effort is required for the field application. Injection concentration constant control method is generally spread control method due to simplicity of operation, and has the advantage of easy control in the field, but it requires a long-term pilot experiment for optimal control, which causes a large time and economic loss. There is this. In addition, since a certain amount of ozone is injected in proportion to the inflow flow rate, it was very difficult to cope with water quality fluctuations. In order to solve this problem, the inflow flow rate should be reflected in the control system, and the introduction of a real-time water quality analysis device that automatically analyzes the water quality and the introduction of an expert system that can control the data derived from these results by database. Required. However, even if the inflow flow rate is reflected and the water quality analysis device and the expert system are introduced to optimize the injection concentration schedule control method, data collection through pilot experiments is required for this purpose. Since there is a limit in reflecting the water quality characteristics of raw water analyzed by the control system to the control system, it is difficult to expect an optimal operation effect, which has not been put into practical use as an automatic control system reflecting water quality and flow rate.

In addition, the constant ozone concentration constant control method was developed to compensate for the difficulty in coping with the change of raw water quality, but this control method also does not reflect the change in the inflow flow rate. In the case of a large residual ozone concentration control and accurate CT (C: Concentration of disinfectant (mg / L), T: Contact Time, Ozone Oxidation Capacity, Integrating Residual Ozone Concentration according to Raw Water Retention Time in Ozone / AOP Contact Facility) It has a disadvantage that control cannot be implemented. In addition, a long-term pilot experiment is required to select the optimum residual ozone concentration. In particular, the residual ozone concentration constant control method is controlled to maintain a constant residual ozone concentration at a specific point (usually the treated water outlet) in the ozone / AOP contact facility. The consumption characteristics of ozone are not fully reflected. As the rate of ozone consumption varies according to various organic and inorganic factors in raw water, the constant ozone concentration constant control method is not an accurate CT control method but a limited control method that partially reflects only CT values up to a specific point. It can be said.

Accordingly, the present invention has been made to solve the above problems, and according to the water quality characteristics of the influent, using the total organic carbon (TOC) concentration as an indicator of the process control, real-time analysis by the total organic carbon measuring device The automatic control device of ozone process and advanced oxidation process using total organic carbon which can control the ozone injection concentration and hydrogen peroxide injection concentration of ozone process and advanced oxidation process in real time using the analysis result of the total organic carbon measuring device. And to provide a method.

1 is a schematic diagram showing an embodiment of an automatic control apparatus of an ozone process and an advanced oxidation process using total organic carbon according to the present invention;

Figure 2 is a flow chart for performing an automatic control method of the ozone process and advanced oxidation process using the total organic carbon according to the present invention.

Figure 3 is an exemplary view of the operation of the automatic control system according to the present invention at the time of sudden change in the inflow flow rate flowing into the ozone process and advanced oxidation process.

Figure 4 is an exemplary view of the operation of the automatic control system according to the present invention at the time of sudden change in the inflow water quality flowing into the ozone process and advanced oxidation process.

Figure 5 is an example of the total organic carbon removal efficiency according to the operation of the ozone process and advanced oxidation process of the present invention.

Figure 6 is an example of the removal efficiency of potassium permanganate consumption material according to the operation of the ozone process and the advanced oxidation process of the present invention.

Explanation of symbols on the main parts of the drawings

1: Raw water inlet 2: Ozone / AOP contact facility

3: Inflow flow measuring device 4: Total organic carbon (TOC) measuring device

5: hydrogen peroxide storage tank 6: hydrogen peroxide injection pump

7: Ozone Generator 8: Ozone Monitor

9: Total Organic Carbon (TOC) Control Unit 10: Raw Water Discharge Unit

In order to achieve the above object, the present invention, in the water treatment system, ozone / AOP contact facility configured to react by supplying ozone or ozone and hydrogen peroxide to the raw water introduced by the induction of the raw water inlet; An inflow flow rate measuring device formed on one side of the raw water inflow portion; A total organic carbon (TOC) measuring device connected to one side of the raw water inlet to measure raw water and total organic carbon (TOC); A hydrogen peroxide injection pump for supplying hydrogen peroxide stored in the hydrogen peroxide storage tank to the ozone / AOP contact facility; An ozone generator for generating ozone and supplying it to the ozone / AOP contact facility; A generation ozone monitor installed to be connected to the ozone generating device to measure the concentration of ozone supplied to the ozone / AOP contact facility; A total organic carbon (TOC) control unit connected to an inflow flow meter, a total organic carbon (TOC) measuring device, a hydrogen peroxide injection pump, an ozone generating device, and an ozone generating monitor to control the supply of ozone and hydrogen peroxide according to each measured value. It provides an ozone process and advanced oxidation process (AOP) automatic control device using total organic carbon (TOC).

In addition, the present invention comprises the steps of measuring the flow rate of raw water flowing into the raw water inlet; Measuring a total organic carbon (TOC) value of raw water flowing into the raw water inlet; Comparing the measured total organic carbon (TOC) with a previous total organic carbon (TOC) to determine whether the deviation is less than a set value; Determining an injection amount of ozone and hydrogen peroxide when the deviation of the total organic carbon (TOC) is less than a predetermined value; Adjusting the ozone generator and the hydrogen peroxide injection pump according to the determined injection amount of ozone and hydrogen peroxide; Measuring the ozone concentration generated in the ozone generator; The present invention provides an automatic control method of ozone process and advanced oxidation process (AOP) using total organic carbon (TOC) including the step of injecting ozone and hydrogen peroxide when the deviation between the generated ozone generation amount and the determined ozone injection amount is less than the set value.

In the control method of the present invention, if the measured difference between the total organic carbon (TOC) and the previous total organic carbon (TOC) is greater than or equal to the set value, the ozone and hydrogen peroxide injection amount is determined by adding or subtracting the measured total organic carbon (TOC) by the set value. Making a step; Determining an injection amount of ozone and hydrogen peroxide at a predetermined new injection amount.

In addition, if the deviation between the ozone generation amount and the determined ozone injection amount is greater than or equal to the set value, it is characterized in that the step of adjusting the ozone generator and the hydrogen peroxide injection pump by recalculating the ozone and hydrogen peroxide injection amount.

The present invention made as described above calculates the proper injection concentration of ozone and hydrogen peroxide by measuring the flow rate and total organic carbon (TOC) concentration of inflow water flowing into the ozone process and advanced oxidation process (AOP) of the water treatment system in real time, ozone Since the proper amount is automatically injected by controlling the generator and the hydrogen peroxide supply pump, it is possible to stably control the treated water quality, and to respond to changes in quantity and water quality in real time, thereby improving the safety and reliability of water treatment.

Hereinafter, with reference to the accompanying Figures 1 to 5 will be described an embodiment of the present invention;

1 is a schematic diagram of an automatic control apparatus for an ozone process and an advanced oxidation process (AOP) using total organic carbon (TOC), and a raw water inflow unit 1 for inducing raw water from a water treatment system as shown in FIG. ; An ozone / AOP contact facility (2) for supplying and reacting ozone or ozone and hydrogen peroxide to the raw water introduced by the induction of the raw water inlet (1); An inflow flow rate measuring device (3) installed on one side of the raw water inflow portion (1); A total organic carbon (TOC) measuring device 4 connected to one side of the raw water inlet unit 1 for measuring total organic carbon (TOC) of raw water; A hydrogen peroxide injection pump 6 for supplying hydrogen peroxide to the ozone / AOP contact facility 2 by a predetermined amount by an external control signal; A hydrogen peroxide storage tank 5 connected to the hydrogen peroxide injection pump 6; An ozone generator 7 which is driven by an external control signal and generates ozone to supply a predetermined amount of ozone to the ozone / AOP contacting facility 2; A generation ozone monitor 8 connected to the ozone generator 7 to measure the concentration of ozone supplied to the ozone / AOP contact facility 2; It is connected to inflow flow rate measurement device, total organic carbon (TOC) measurement device, hydrogen peroxide injection pump, ozone generator and generated ozone monitor, and checks the measured inflow flow rate, total organic carbon (TOC) and generated ozone concentration. Total organic carbon (TOC) control that controls the amount of ozone and hydrogen peroxide supplied through the ozone generator 7 and the hydrogen peroxide injection pump 6 to determine the injection amount by calculating the proper injection concentration of hydrogen peroxide. It consists of the unit 9.

Reference numeral 10 denotes a raw water discharge port of the ozone / AOP contact facility.

The present invention configured as described above, in the water treatment system, the raw water is guided through the raw water inlet unit (1) is supplied to the ozone / AOP contact facility (2), at this time the inflow flow rate measuring device installed in the raw water inlet unit ( The inflow of raw water introduced through 3) is measured, and the measured flow value is transmitted to the total organic carbon (TOC) control unit 9. In addition, some of the raw water flowing into the ozone / AOP contact facility (2) through the raw water inlet (9) is supplied to the total organic carbon (TOC) measuring device (4) to measure the total organic carbon (TOC) concentration The measured value is also transmitted to the TOC control unit 9.

The total organic carbon (TOC) control unit 9 is based on the total organic carbon (TOC) by using the data transmitted from the inflow flow measuring device (3) and the total organic carbon (TOC) measuring device (4) As shown in [Equation 1] and [Equation 2], the amount of ozone and hydrogen peroxide injected considering the injection ratio to the total organic carbon (TOC) preset is calculated.

[Equation 1]

Ozone injection concentration (mg / L) = Total organic carbon (TOC) concentration (mg / L) × Injection ratio to total organic carbon + Correction value

Here, total organic carbon (TOC) concentration (mg / L): Real-time measurement value of the total organic carbon (TOC) measuring device.

Injection ratio to total organic carbon: Ozone injection concentration injection ratio to the total organic carbon (TOC) concentration set by the driver.

Correction value: Ozone injection concentration correction value set by the operator.

[Equation 2]

Ozone injection amount (mg / min) = Inflow flow rate (L / min) x Ozone injection concentration (mg / L)

Inflow flow rate (L / min): Real time measurement of the inflow flow measurement device.

Ozone injection concentration (mg / L): determined by the above Equation 1.

The generated ozone monitor (8) measures the concentration of ozone generated by the ozone generator (7), and transmits the result to the total organic carbon (TOC) control unit 9 to control the generated ozone concentration. The ozone generation concentration is controlled according to Equation 3 below.

[Equation 3]

Ozone generation concentration (mg / L) = ozone injection amount (mg / min) ÷ ozone injection air volume (L / min)

Ozone injection amount (mg / min): determined by the above Equation 2.

Ozone injection air volume (L / min): The amount of ozone injection air injected into the actual ozone / AOP contact facility (2).

Accordingly, ozone generated in the ozone generator 7 under the control of the total organic carbon (TOC) control unit 9 and hydrogen peroxide stored in the hydrogen peroxide storage tank 5 through the hydrogen peroxide injection pump 6 are ozone / AOP. It is supplied to the contact facility 2 appropriately. At this time, the hydrogen peroxide injection amount is preferably injected at a predetermined ratio proportional to the ozone injection amount, 10% is described as an example in this embodiment.

The hydrogen peroxide injection concentration is calculated through the following [Equation 4].

Hydrogen peroxide injection concentration (mg / L) = Ozone injection concentration (mg / L) × Hydrogen peroxide injection ratio

Ozone injection concentration (mg / L): determined by the above Equation 1.

Hydrogen peroxide injection ratio: Hydrogen peroxide injection ratio compared to ozone injection concentration (mg / L) set by the driver.

In addition, the automatic control method of the ozone process and the advanced oxidation process (AOP) using the total organic carbon (TOC) of the present invention configured as described above will be described with reference to FIG.

First, the inflow rate of the inflow water introduced into the water treatment system and introduced into the ozone / AOP contact facility 2 is measured by the inflow flow rate measurement device 3 according to the induction of the raw water inflow unit 1 (S10). )

A part of the raw water flowing into the inflow flow rate measuring device 3 from the raw water inlet unit 1 is supplied to the total organic carbon (TOC) measuring device 4 to measure the total organic carbon (TOC) concentration value (S20). . The measured current total organic carbon (TOC) and the most recent previous total organic carbon (TOC) are compared to determine whether the deviation is less than the set value (S30).

At this time, if the measured difference between the total organic carbon (TOC) concentration of the influent and the previous total organic carbon (TOC) concentration is less than the set value, the injection amount of ozone and hydrogen peroxide according to the inflow of raw water and the total organic carbon (TOC) concentration It is determined (S40).

In other words, if the change is large compared to the previous measured values, the new measured value is not directly used for control, and the control value is increased by adding or subtracting the set value to the control to increase the stability of the control.

However, if the deviation between the measured total organic carbon (TOC) concentration of the influent and the previous total organic carbon (TOC) concentration is above the set point, the total measured in the database of the total organic carbon (TOC) control unit 9 The amount of ozone and hydrogen peroxide injected to the organic carbon (TOC) is calculated (S50), and the amount of ozone and hydrogen peroxide suitable for the inflow of raw water and the new total organic carbon (TOC) concentration is determined (S40). .

When the injection amount of ozone and hydrogen peroxide is determined in step S40, the ozone generator 7 and the hydrogen peroxide injection pump 6 are adjusted according to the determined injection amount of ozone and hydrogen peroxide (S60), and the ozone generator 7 is generated. The concentration of ozone is measured (S70).

It is determined whether the deviation between the ozone generation amount generated by the ozone generator 7 and the determined ozone injection amount is less than the set value (S80). If the deviation between the generated ozone generation amount and the determined ozone injection amount is less than the set value, ozone / hydrogen peroxide is ozone / Supply to the AOP contact facility (2) (S90).

However, if the deviation between the ozone generation amount and the determined ozone injection amount is greater than or equal to the set value, performing the step (S100) of recalculating the ozone and hydrogen peroxide injection amount to adjust the ozone generator 7 and the hydrogen peroxide injection pump 6 again. will be.

Figure 3 shows an example of operating the ozone process in the automatic control device and method using the total organic carbon (TOC) of the present invention, when the inflow flow rate flowing into the ozone process. In this figure, when the inflow flow rate drops sharply from 4.33㎥ / hr to 2.0㎥ / hr, the ozone generation concentration was also increased or decreased in proportion to the inflow flow rate from 40mg / L to 19mg / L. The concentration appeared to remain nearly constant at about 0.53 mg / L.

Figure 4 shows an example of operating the ozone process in the automatic control device and method using the total organic carbon (TOC) of the present invention, when the incoming water quality fluctuates flowing into the ozone process. The total organic carbon (TOC) of the influent is 2.471mg / L at 1.602mg / L, and when the water quality changes rapidly from 0.022 Abs./cm to 0.043Abs./cm The concentration of organic carbon (TOC) was also increased to reflect the change in inflow water quality, and the concentration of ozone was increased corresponding to the total organic carbon (TOC) concentration. That is, when the post ozone process is operated by the automatic control apparatus and method using the total organic carbon (TOC) of the present invention, the ozone process can be controlled in response to the sudden fluctuation of the inflow flow rate and the change of the inflow water quality. .

Fig. 5 shows a comparison of the removal efficiency when the TOC is operated by the conventional automatic control method and the automatic control method of the present invention.

Figure 6 shows the treatment efficiency of the potassium permanganate (KMnO4) consumption material compared with the conventional automatic control method and the present invention, the present invention is about 13% to 29% removal efficiency in the ozone and activated carbon combination process than the conventional control method It was analyzed to be high.

From the above results, in the ozone process, when it is operated by the automatic control device and method using total organic carbon (TOC), the responsiveness of quantity and water quality is high, and potassium permanganate (KMnO4) consumption material and total organic matter which are indicators of trace organic matter In the case of carbon (TOC), the removal efficiency is higher than that of the conventional automatic control method. Therefore, when ozone is injected based on the total organic carbon (TOC) concentration, the treatment efficiency can be maximized in the ozone process and the activated carbon combination process It seems to be.

Therefore, the total organic carbon (TOC) concentration of the raw water is measured by using total organic carbon (TOC) in consideration of the influent flow rate of the incoming raw water, and ozone is determined based on the measured total organic carbon (TOC) concentration. When a certain amount of hydrogen peroxide is injected at the same time as the injection or ozone, it is possible to cope with changes in quantity and water quality in real time so that the treated water quality can be managed constantly and safely treated.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be apparent to those who have knowledge.

As described above, according to the present invention, while calculating the appropriate injection concentration of ozone and hydrogen peroxide while measuring the flow rate and total organic carbon (TOC) concentration of the inflow water flowing into the ozone process and advanced oxidation process (AOP) of the water treatment system in real time By controlling the ozone generator and the hydrogen peroxide supply pump, an appropriate amount is automatically injected, so that the treated water quality can be constantly managed in response to changes in the quantity and water quality, thereby improving the safety and reliability of the water treatment.

In other words, in Korea, where seasonal changes in water quality and water quality are severe, it is possible to optimize the energy consumption and operation of hydrogen peroxide injection facilities in ozone generation facilities by calculating and controlling the amount of ozone injection that is active in the quantity change while reflecting the water quality. .

In addition, the manager of the water treatment system can increase the management efficiency by measuring the total organic carbon (TOC) concentration and calculating and injecting the appropriate ozone injection amount without the need to periodically check and confirm the ozone and AOP ozone injection amount. In addition, there are other effects that can be used to automate the ozone process.

Claims (6)

Raw water inlet unit for introducing raw water from the outside; An inflow flow rate measuring device which is installed at one side of the raw water inflow unit and measures the flow rate of the incoming water; An ozone / high oxidation (AOP) contact facility for supplying and reacting at least one of ozone and hydrogen peroxide to raw water introduced by induction of the raw water inlet; Total organic carbon (TOC) measuring device for receiving a portion of the raw water flowing from the raw water inlet unit to measure the total organic carbon (TOC); The total inflow rate of raw water measured by the inflow flow rate measuring device, the total organic carbon (TOC) measuring device, and the total organic carbon (TOC) concentration are received to calculate the injection concentration of ozone and hydrogen peroxide to determine the injection amount. Carbon (TOC) control unit; And Ozone generating device for generating ozone under the control of the total organic carbon (AOP) control unit 9 and supplying it to the ozone / AOP contact facility Automatic control device of ozone and advanced oxidation process (AOP) using a total organic carbon (TOC) comprising a. The method of claim 1, A hydrogen peroxide injection pump driven by a control of a total organic carbon (TOC) control unit to supply hydrogen peroxide to the ozone / AOP contact facility by a predetermined amount; And Hydrogen peroxide storage tank connected to the hydrogen peroxide injection pump Automatic control device of ozone and advanced oxidation process (AOP) using a total organic carbon (TOC) further comprising. The method according to claim 1 or 2, Generation ozone monitor connected to the ozone generator to measure the concentration of ozone supplied to the ozone / AOP contact facility Automatic control device of ozone and advanced oxidation process (AOP) using a total organic carbon (TOC) further comprising. A first step of measuring the flow rate of raw water; A second step of measuring the total organic carbon (TOC) concentration of the raw water; A third step of comparing the measured current total organic carbon (TOC) with the most recent previous total organic carbon (TOC) to determine whether the deviation is less than a predetermined ratio; When the difference between the total organic carbon (TOC) concentration of the influent measured in the third step and the previous total organic carbon (TOC) concentration is less than a predetermined ratio, the injection amount of ozone and hydrogen peroxide suitable for the measured total organic carbon (TOC) Determining a fourth step; A fifth step of controlling driving of the ozone generator and the hydrogen peroxide injection pump according to the determined injection amount of ozone and hydrogen peroxide; A sixth step of measuring a concentration of ozone generated in the ozone generator; A seventh step of comparing the ozone generation amount and the determined ozone injection amount to determine whether the deviation is less than a predetermined ratio; And An eighth step of supplying ozone and hydrogen peroxide to the ozone / AOP contact facility when the deviation between the ozone generation amount and the determined ozone injection amount is less than a predetermined ratio; Automatic control method of ozone process and advanced oxidation process (AOP) using a total organic carbon (TOC) comprising a. The method of claim 4, wherein In the fourth step If the difference between the measured influent total organic carbon (TOC) concentration and the previous total organic carbon (TOC) concentration is greater than or equal to the set value, the total of the raw water inflow and total organic carbon (TOC) 9th step of determining the injection amount of ozone and hydrogen peroxide according to the organic carbon (TOC) concentration Automatic control method of ozone process and advanced oxidation process (AOP) using a total organic carbon (TOC) comprising a. The method according to claim 4 or 5, In the seventh step A tenth step of adjusting the ozone generator and the hydrogen peroxide injection pump by recalculating the ozone and hydrogen peroxide injection amount if the deviation between the ozone generation amount and the determined ozone generation amount is greater than or equal to the set value; Automatic control method of ozone process and advanced oxidation process (AOP) using a total organic carbon (TOC) comprising a.