KR101169877B1 - The method for settings of operation parameters in advanced oxidation processesAOPs - Google Patents

Abstract

The present invention relates to an efficient setting method of ultraviolet (UV) / hydrogen peroxide (H ₂ O ₂ ) advanced oxidation water treatment process conditions, by introducing hydrogen peroxide into the influent flowing into the advanced oxidation treatment tank, and irradiating the UV radicals to hydroxyl radicals An advanced oxidation water treatment process of generating and oxidizing the influent, the method comprising: a first step of measuring an initial inlet concentration [P] o of any oxidation target material P included in the influent; The final treatment concentration target [P] t of the above-mentioned arbitrary oxidation target material (P) to be included in the treated water oxidized in the advanced oxidation treatment tank is set, and the concentration of p-Chlorobenzoic acid (pCBA) A second step of setting an input concentration [pCBA] o; A third step of calculating a final calculated concentration ([pCBA] t) of pCBA (p-Chlorobenzoic acid) to be included in the treated water oxidized in the advanced oxidation treatment tank by Equation 1 below; PCBA (p-Chlorobenzoic acid) was added to the influent at the concentration ([pCBA] o), and the final concentration of pCBA contained in the treated water ([pCBA] was changed while changing the oxidation treatment conditions in the advanced oxidation tank. ] tr) to adjust the oxidation treatment conditions such that the final treatment concentration ([pCBA] tr) of the measured pCBA is similar to the final calculation concentration ([pCBA] t) of pCBA.

Description

The method for settings of operation parameters in advanced oxidation processes (AOPs)

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an advanced oxidation water treatment process and to a method for efficiently setting UV / H ₂ O ₂ advanced oxidation water treatment process conditions.

Recently, due to the improvement of the quality of life and the increase of the public's interest in the water environment, the demand for water and sewage treatment is continuously increasing, and various studies are being conducted to improve the water and sewage treatment process.

Conventional physical water treatment processes such as flocculation / sedimentation / filtration, or conventional biological sewage treatment processes are difficult to decompose harmful pollution present in water purification and sewage processes such as endocrine disruptors and taste-inducing substances. There is a limit to the processing of substances.

Therefore, the introduction of a chemical method for oxidizing hardly degradable harmful contaminants in addition to the existing physical and biological methods, and one of such chemical water treatment methods generates hydroxyl radicals (.OH), one of the powerful oxidizing agents, in the influent. There is an Advanced Oxidation Process (AOP) which oxidizes existing hardly degradable harmful pollutants.

These highly oxidized water treatment processes include various advanced oxidized water treatment processes such as ozone (O ₃ ) / hydrogen peroxide (H ₂ O ₂ ) process, Fenton process, ultraviolet (UV) / hydrogen peroxide (H ₂ O ₂ ) process. Ultraviolet (UV) / hydrogen peroxide (H ₂ O ₂ ) process is widely used as the simplest process as compared to other advanced oxidation water treatment processes.

When describing the ultraviolet (UV) / hydrogen peroxide (H ₂ O ₂ ) process in more detail, a certain amount of hydrogen peroxide (H ₂ O ₂ ) is added to the influent, and irradiated with ultraviolet (UV), hydroxyl radicals as in Scheme 1 It is a process of producing (.OH) to oxidize hardly degradable harmful pollutants contained in influent.

Scheme 1

H ₂ O ₂ + hv → 2 OH

However, the hydroxyl radical (OH) produced by the reaction as in Scheme 1 is recombined into hydrogen peroxide (H ₂ O ₂ ) in the solvent cage in the chemical reaction, the concentration of hydrogen peroxide in the treated water, Hydrogen peroxide (H ₂ O ₂ ) concentration and UV ( The intensity of UV) alone cannot easily predict the degree of oxidation of hardly decomposable hazardous contaminants in treated water.

As a result, in the conventional highly oxidized water treatment process, the sample is taken from the treated water and qualitatively and quantitatively analyzed for the trace amount of hardly degradable harmful contaminants contained in the sample, thereby directly evaluating the process efficiency. Should be set.

However, such a direct evaluation method is dependent on the water quality characteristics of the influent, and if there are a large number of hardly decomposable harmful contaminants included in the influent, it may be difficult to analyze the components and may be present in the treated water. If the trace amount of hardly decomposable harmful pollutants is limited, the analysis of trace amount is difficult, so it is not possible to directly evaluate whether the oxidation treatment has been carried out to the extent that targets the hardly degradable harmful pollutants. It is difficult to properly set the conditions for the advanced oxidation water treatment process to oxidize harmful pollutants through the advanced oxidation water treatment process to oxidize the specific hardly degradable pollutants contained in the treated water to the desired level. It's a reality.

In the present invention, even if the concentration of the oxidation treatment target material, which is a hardly decomposable harmful pollutant contained in the treated water, is not measured by direct analysis while changing the conditions of the advanced oxidation water treatment process in the UV / H ₂ O ₂ advanced oxidation water treatment process, the hydroxyl By measuring the change in the concentration of pCBA, an indicator that represents the reaction with radicals, it is intended to provide a method for setting a high oxidation water treatment process conditions that can be treated to target target concentration of hardly degradable harmful pollutants.

In particular, the present invention provides a highly oxidized water treatment process conditions that can be treated to the target concentration in the case of difficult or impossible quantitative analysis due to the extremely small amount of hardly degradable harmful contaminants contained in the treated water in the advanced oxidation water treatment process By measuring changes in the concentration of pCBA, an indicator of the reaction with hydroxyl radicals, it is intended to provide a method to set the conditions for the treatment of highly oxidative water treatments capable of processing up to target concentrations of extremely low-degradable hazardous pollutants. will be.

In a method for setting operating conditions of an advanced oxidation water treatment process according to an embodiment of the present invention, in the advanced oxidation water treatment process in which hydrogen peroxide is added to an inflow water introduced into an advanced oxidation treatment tank to generate hydroxyl radicals, and oxidizes the inflow water. A first step of measuring an initial input concentration [P] o of any oxidation treatment target material P included in the influent; The final treatment concentration target [P] t of the above-mentioned arbitrary oxidation target material (P) to be included in the treated water oxidized in the advanced oxidation treatment tank is set, and the concentration of p-Chlorobenzoic acid (pCBA) A second step of setting an input concentration [pCBA] o; A third step of calculating a final calculated concentration ([pCBA] t) of pCBA (p-Chlorobenzoic acid) to be included in the treated water oxidized in the advanced oxidation treatment tank by Equation 1 below; PCBA (p-Chlorobenzoic acid) was added to the influent at the concentration ([pCBA] o), and the final concentration of pCBA contained in the treated water ([pCBA] was changed while changing the oxidation treatment conditions in the advanced oxidation tank. ] tr) to adjust the oxidation treatment conditions such that the final treatment concentration ([pCBA] tr) of the measured pCBA is similar to the final calculation concentration ([pCBA] t) of pCBA.

Equation 1

In Equation 1, k _{OH, P} is a reaction rate constant for OH radicals of any oxidation target material (P) in the influent introduced into the advanced oxidation treatment tank, k _{OH, pCBA} is the reaction rate for OH radicals of pCBA Constant, [pCBA] ₀ is the initial input concentration of pCBA, [pCBA] _t is the final calculated concentration after advanced oxidation of pCBA, and [P] ₀ is any oxidation target material in the influent introduced into the advanced oxidation treatment tank. Initial input concentration of (P), [P] t is the target value of the final treatment concentration of any oxidation target material (P) in the treated water treated by the advanced oxidation treatment.

Here, in the fourth step, pCBA is added to the influent concentration ([pCBAl] o) to the collected influent which collects a part of the influent, and put into the experimental oxidation treatment tank installed separately from the advanced oxidation treatment tank, and the oxidation treatment in the experimental oxidation treatment tank. The final treatment concentration of pCBA ([pCBA] tr2) measured by measuring the final concentration of pCBA ([pCBA] tr2) contained in the treated water with changing conditions is similar to the final calculated concentration of pCBA ([pCBA] t). The oxidation treatment conditions can be adjusted to cure.

In the fourth step, distilled water in which pCBA was added at a concentration ([pCBAm] o) was added to an experimental oxidation treatment tank installed separately from an advanced oxidation treatment tank, and included in the treatment water while changing the oxidation treatment conditions in the experimental oxidation treatment tank. Adjust the oxidation treatment conditions so that the final treatment concentration ([pCBA] tr3) of the pCBA determined by measuring the final treatment concentration ([pCBA] tr3) of the prepared pCBA is similar to the final calculation concentration ([pCBA] t) of the pCBA. Can be.

At this time, it is preferable to adjust the oxidation treatment conditions such that the ratio of the final treatment concentration of pCBA and the final calculated concentration of pCBA measured in the fourth step is 0.9 to 1.1: 1.

In the fourth step, the oxidation treatment conditions are preferably the concentration of hydrogen peroxide introduced, the intensity of ultraviolet (UV) radiation irradiated to the advanced oxidation treatment tank, the inflow rate of the inflow water, the discharge flow rate of the treated water, or the size of the advanced oxidation treatment tank. Here, the concentration of hydrogen peroxide is preferably higher than the initial input concentration of any oxidation treatment target material (P) included in the influent, and the concentration of hydrogen peroxide introduced into the influent is the concentration of hydrogen peroxide ([H ₂ O] ₂ ]) and the product of the rate constants ( _{k.OH, H2O2} ) of hydrogen peroxide and hydroxyl radicals ( _{k.OH, H2O2} x [H ₂ O ₂ ]) are the concentrations of any oxidation target ([P]) It is more preferable to set it so that it becomes 10 times or more of the product ( _{k.OH, P} x [P]) of the rate constant of an oxidation target material and a hydroxyl radical.

Although the present invention does not measure the concentration of the oxidation treatment target material, which is a hardly degradable harmful pollutant included in the treated water, by changing the operating conditions of the advanced oxidation water treatment process in the UV / H ₂ O ₂ advanced oxidation water treatment process, By measuring the change in the concentration of pCBA, which is an indicator of the reaction with hydroxyl radicals, a method for setting a high oxidation water treatment process condition capable of processing up to a target treatment concentration of hardly degradable pollutants was provided.

In particular, the present invention provides a highly oxidized water treatment process conditions that can be treated to the target concentration in the case of difficult or impossible quantitative analysis due to the extremely small amount of hardly degradable harmful contaminants contained in the treated water in the advanced oxidation water treatment process By measuring the change in the concentration of pCBA, an indicator that represents the reaction with hydroxyl radicals, we provided a method for setting the advanced oxidation water treatment process conditions that can handle extremely small amounts of difficult-degradable harmful pollutants. .

1 is a graph measuring the decomposition characteristics of the standard target material according to the ultraviolet irradiation intensity in the embodiment of the present invention

The method for setting the conditions of the advanced oxidation water treatment process according to the present invention can be applied to all of the conventional advanced oxidation treatment processes. In particular, the influent flowing into the advanced oxidation treatment tank is included in the influent as it generates OH radicals in the presence of hydrogen peroxide. It is desirable to apply it in advanced oxidation water treatment processes that decompose potentially difficult to decompose harmful pollutants. Moreover, as a method of generating OH radicals in the presence of hydrogen peroxide, a method using ultraviolet rays is more preferable.

In the present invention, in the advanced oxidation water treatment process in which hydrogen peroxide is added to the influent to generate hydroxyl radicals to oxidize the oxidation target material contained in the influent, the target concentration value of the oxidation target material included in the treated water is oxidized. In setting the oxidation treatment conditions to achieve the result, even if the final treatment concentration of the specific oxidation target substance contained in the treated water is not directly measured by actual analysis while changing the oxidation treatment conditions, the reaction result with the hydroxyl radical By measuring the change in the concentration of pCBA, which is an indicator that indicates, it is possible to set the operating conditions of the highly oxidized water treatment process that can be treated up to the target treatment concentration of hardly decomposable harmful pollutants.

Reactions or bioactivity in which UV reacts with hydrogen peroxide to produce hydroxyl radicals

The rate at which the formed hydroxyl radicals react with the contaminants present in water occurs most rapidly, while the reactivity of the radicals produced by the oxidation reaction is relatively slow. Therefore, the reaction of the hydroxyl radical under the condition that the pollutant to be treated can be represented by the following equation (2).

Equation 2

In other words, in [Formula 2] [· OH] is the concentration of hydroxyl radicals, [H ₂ O ₂ ] is the concentration of hydrogen peroxide, [A], [B], .... [X] is present in the reaction solution Concentration of chemicals. In Equation 2, k represents a rate constant of each substance and hydroxyl radical.

When the concentration of hydrogen peroxide is used in the UV / H ₂ O ₂ process at a high concentration compared to the concentration of harmful chemicals, most of the hydroxyl radicals generated react with hydrogen peroxide because the harmful chemicals are present in very small amounts compared to hydrogen peroxide. Can be assumed. For example, if the concentration of hydrogen peroxide is 4 mM and pCBA is present in the solution at 2 μM, the reaction rate between hydroxyl radical and hydrogen peroxide is 3 x 10 ⁷ M ^-1 s ^-1 and the reaction rate between hydroxyl radical and pCBA is Since 5 x 10 ⁹ M ^-1 s ^-1 , k _.OH, H ₂ O ₂ x [H ₂ O ₂ ] is 120,000, whereas k _{.OH, pCBA} x [pCBA] is 10,000, resulting in a ratio of 12: 1. Most of the hydroxyl radicals reacted with hydrogen peroxide.

In other words, considering that the reaction rate of a chemical that reacts rapidly with hydroxyl radicals is on the order of 10 ¹⁰ M ⁻¹ s ⁻¹ , most of the generated hydroxyl radicals are able to react with hydrogen peroxide even in the presence of trace amounts of other chemicals. Respond preferentially. At this time, since the concentration itself of the generated hydroxyl radicals is not high, the self-decomposition of the hydroxyl radicals in Equation 4 can be ignored. At this time, in the UV / H ₂ O ₂ highly oxidized water treatment process, lowering the concentration of hydrogen peroxide increases the rate at which the generated hydroxyl radicals react with the target harmful pollutant, but the final treatment efficiency is decreased because the absolute amount produced is reduced. Therefore, the product of the concentration of hydrogen peroxide ([H ₂ O ₂ ]) introduced into the influent and the rate constant (k _.OH, H ₂ O ₂ ) of hydrogen peroxide and hydroxyl radicals (k _.OH, H ₂ O ₂ x [H ₂ O ₂ ]) It is preferable that the concentration ([P]) of the oxidation target material and the rate constant of the oxidation target material and the hydroxyl radical be 10 or more times the product ( _{k.OH, P} x [P]). On the contrary, if the concentration of hydrogen peroxide is too high, the rate of reaction with the generated hydroxyl radicals becomes too high, resulting in a decrease in process efficiency.

Therefore, when designing the actual UV / H ₂ O ₂ advanced oxidation process, it is important to determine the optimal injection concentration of peroxide in consideration of the water quality of the influent. Under normal operating conditions, as mentioned above, since the injected concentration of hydrogen peroxide is higher than the concentration of trace pollutants, most of the generated hydroxyl radicals will react with the hydrogen peroxide, and the hydroxyl radicals that react with the trace harmful pollutants It is in a steady state and the treatment material is reduced in pseudo-first order as shown in Equation 3.

Equation 3

[A] in the equation (3) is the concentration of the chemical (A), k _exp. Is the quasi-first order rate of decrease, k _{A, .OH} is the rate of reaction of the hydroxyl radical with the chemical (A), and [· OH] _ss is the concentration of the hydroxyl radical at steady state. In particular, even in the presence of other harmful chemicals (B) in the solution, if they are present in trace amounts and do not affect the overall reaction (k _.OH, H ₂ O ₂ x [H ₂ O ₂ ] >> k _{.OH, B} x [B]), the removal of the chemical substance (B) can also be expressed as in Equation 4 as in Equation 3.

Equation 4

In Equation 4 [B] is the concentration of the chemical (B). Integrating Equations 3 and 4 may be derived as in Equation 5 below.

Equation 5

In Equation 5, [A] ₀ and [B] ₀ are inflow concentrations (initial concentrations) of chemicals (A) and (B), respectively, and [A] and [B] are chemicals (A) and (B). The concentration after UV / H ₂ O ₂ advanced oxidation treatment.

Equation (5) is a highly oxidized water treatment process in which hydrogen peroxide is introduced into the influent flowing into the reaction contact tank irradiated with ultraviolet rays to generate hydroxyl radicals to oxidize the influent, under the same conditions as the actual process, such as pCBA, Injected surface chemicals well known to react with the oxyl radical, and can be used to calculate the treatment efficiency of the oxidation target material by measuring the concentration of pCBA in the treated water of the UV / H ₂ O ₂ process. In this case, Equation 5 may be expressed as Equation 1.

In the present invention, in the advanced oxidation water treatment process in which hydrogen peroxide is added to the influent to generate hydroxyl radicals to oxidize the oxidation target material contained in the influent, the target concentration value of the oxidation target material included in the treated water is oxidized. In setting the oxidation treatment conditions to achieve the result, even if the final treatment concentration of the specific oxidation target substance contained in the treated water is not directly measured by actual analysis while changing the oxidation treatment conditions, the reaction result with the hydroxyl radical By measuring the change in the concentration of pCBA, which is an indicator that indicates, it is possible to set the conditions of the highly oxidized water treatment process that can be treated to the target treatment concentration of hardly degradable harmful pollutants. That is, the final treatment target concentration of any oxidation target material to be included in the treated water is set in advance, and the measured value of the initial input concentration of the oxidation target material included in the influent is directly obtained to obtain the measured value. After arbitrarily setting the initial input concentration of pCBA, which is an indicator of the reaction result, the final calculated concentration of pCBA to be included in the treated water after the advanced oxidation treatment can be obtained through Equation 1.

UV / H ₂ O ₂ advanced oxidation water treatment process conditions setting method according to an embodiment of the present invention by introducing hydrogen peroxide to the influent water flowing into the advanced oxidation treatment tank to generate hydroxyl radicals to oxidize the influent water treatment In the process, the first step of measuring the initial input concentration (P) o of any oxidation target material (P) contained in the influent; Set the final target concentration concentration ([P] t) of any oxidation target material (P) to be included in the treated water oxidized in the advanced oxidation treatment tank, and the input concentration of pCBA to be introduced into the influent ([pCBA] o). Setting a second step; Calculating a final calculated concentration ([pCBA] t) of pCBA to be included in the treated water oxidized in the advanced oxidation treatment tank by Equation 1; PCBA was measured by adding pCBA to the influent ([pCBA] o) and measuring the final treatment concentration ([pCBA] tr) of the pCBA contained in the treated water while changing the oxidation treatment conditions in the advanced oxidation tank. And a fourth step of adjusting the oxidation treatment conditions such that the final treatment concentration of [pCBA] tr is similar to the final calculated concentration of pCBA ([pCBA] t).

Here, in the fourth step, pCBA is added to the influent concentration ([pCBAl] o) to the collected influent which collects a part of the influent, and put into the experimental oxidation treatment tank installed separately from the advanced oxidation treatment tank, and the oxidation treatment in the experimental oxidation treatment tank. The final treatment concentration of pCBA ([pCBA] tr2) measured by measuring the final concentration of pCBA ([pCBA] tr2) contained in the treated water with changing conditions is similar to the final calculated concentration of pCBA ([pCBA] t). The oxidation treatment conditions can be adjusted to cure.

In the fourth step, distilled water in which pCBA was added at a concentration ([pCBAm] o) was added to an experimental oxidation treatment tank installed separately from an advanced oxidation treatment tank, and included in the treatment water while changing the oxidation treatment conditions in the experimental oxidation treatment tank. The oxidation treatment conditions can be adjusted such that the final treatment concentration ([pCBA] tr3) of the determined pCBA is similar to the final calculation concentration ([pCBA] t) of the pCBA by measuring the final treatment concentration ([pCBA] tr3). have. At this time, it is preferable to adjust the oxidation treatment conditions such that the ratio of the final treatment concentration of pCBA and the final calculated concentration of pCBA measured in the fourth step is 0.9 to 1.1: 1.

In the fourth step, the oxidation treatment condition is preferably the concentration of hydrogen peroxide introduced, the intensity of ultraviolet rays (UV) irradiated to the advanced oxidation treatment tank, the inflow rate of the inflow water, the discharge flow rate of the treated water, or the size of the advanced oxidation treatment tank. Here, the concentration of hydrogen peroxide is preferably higher than the initial input concentration of any oxidation treatment target material (P) included in the influent, and the concentration of hydrogen peroxide introduced into the influent is the concentration of hydrogen peroxide ([H ₂ O] ₂ ]) and the product of the rate constants ( _{k.OH, H2O2} ) of hydrogen peroxide and hydroxyl radicals ( _{k.OH, H2O2} x [H ₂ O ₂ ]) are the concentrations of any oxidation target ([P]) It is more preferable to set it so that it becomes 10 times or more of the product ( _{k.OH, P} x [P]) of the rate constant of an oxidation target material and a hydroxyl radical.

Hereinafter, an embodiment of an embodiment of the present invention will be described in detail.

In each embodiment of the present invention, pCBA was selected as an indicator for quantifying the production of OH radicals by UV / H ₂ O ₂ process. The rate constant of pCBA was determined to be 5 x 10 ⁹ M ^-1 sec ^-1 using both the literature value and the indirect method through the competitive reaction shown in Equation 1 and the direct method through the gamma radiolysis. Analysis of the material was performed by HPLC (high performance liquid chromatography). In this study, 1,4-Dioxane, Geosmine, 2-MIB, and 2,4-dichlorophenoxyacetic acid, herbicides, were used as indicator indicators to examine the adequacy of the model predicted results. 2,4-D), Bisphenol-A, an endocrine disruptor (environmental hormone), was selected. Each material was analyzed using HPLC and Gas Chromatography-Mass Spectroscopy (GC-MS), and no concentration (<5 ppb) contaminants was concentrated at this stage. In the experiment, hydrogen peroxide was used by direct method (molecularabsorbance: 40 M ^-1 cm ^-1 ) to measure absorbance at 240 nm and above 1 mM, and DMP method was used below 1 mM. DMP method is to measure the absorbance at 454nm after mixing DMP (2,9-dimethyl-1,10-phenanthroline) solution, 0.1M phosphate buffer, copper (II) sulfate solution with a solution containing hydrogen peroxide.

In this embodiment, the decrease in pCBA according to the UV irradiation at various hydrogen peroxide concentration conditions was analyzed and the results are shown in FIG. The control experiment showed no decrease in pCBA when hydrogen peroxide was absent. Meanwhile, the results of calculating the concentration of hydroxyl radicals generated at 20 mW / cm ² of ultraviolet ray irradiation intensity are shown in Table 1 below.

H ₂ O ₂ (mM) [?? OH] ss (M) R ² One 5.72 x 10 ^-11 0.99 2 7.76 x 10 ^-11 0.99 4 1.72 x 10 ^-10 0.99 8 1.33 x 10 ^-10 0.99

Where R ² is This value indicates the correlation between the concentration of hydrogen peroxide and the concentration of [?? OH]. The closer to 1, the greater the correlation between the two variables.

In the case of UV / H ₂ O ₂ process influent, the concentration of toxic chemicals is not high, so it can be predicted that most of the generated OH radicals react with hydrogen peroxide even for chemicals other than pCBA. In other words, knowing the rate constant and concentration of the hazardous chemicals, it is possible to predict the reduction through the quantified value. In particular, when the concentration of the toxic chemicals is a small amount compared to the concentration of hydrogen peroxide (about 2 mM or less in the conditions of the present embodiment) it is possible to predict the removal rate irrespective of the concentration of the toxic chemicals.

As a result, as shown in Table 2, the harmful chemicals were effectively removed, and it was confirmed that the values quantified through pCBA using Equation 1 and the experimental values were in good agreement. Table 2 shows that various hazardous chemicals are effectively oxidized at a low UV dose of 72 mW / cm ² .sec. Considering the high UV dose in the actual process, it can be seen that the UV / H ₂ O ₂ process is effective for controlling harmful chemicals. In addition, the reduction of chemicals predicted through the aforementioned model and quantification experiment in Table 2 is a good result in the operation and interpretation of UV / H ₂ O ₂ .

In conclusion, this method allows you to set the final concentration of the hazardous substance to be treated, calculate rate constants with hydroxyl radicals to achieve such treatment efficiency, and predict the final dose and UV dose required for hydrogen peroxide. It is possible.

Claims (7)

In a highly oxidized water treatment process in which hydrogen peroxide is added to the influent flowing into the advanced oxidation treatment tank to generate hydroxyl radicals, thereby oxidizing the influent.
A first step of measuring an initial input concentration [P] o of any oxidation treatment target material P included in the influent;
The final treatment concentration target [P] t of the above-mentioned arbitrary oxidation target material (P) to be included in the treated water oxidized in the advanced oxidation treatment tank is set, and the concentration of p-Chlorobenzoic acid (pCBA) A second step of setting an input concentration [pCBA] o;
A third step of calculating a final calculated concentration ([pCBA] t) of pCBA (p-Chlorobenzoic acid) to be included in the treated water oxidized in the advanced oxidation treatment tank by Equation 1 below;
PCBA (p-Chlorobenzoic acid) was added to the influent at the concentration ([pCBA] o), and the final concentration of pCBA contained in the treated water ([pCBA] was changed while changing the oxidation treatment conditions in the advanced oxidation tank. ] tr), and a fourth step of adjusting the oxidation treatment conditions such that the measured final concentration of pCBA ([pCBA] tr) is similar to the final concentration of pCBA ([pCBA] t). Method of setting the oxidation water treatment process conditions.
Equation 1

In Equation 1, k _{OH, P} is a reaction rate constant for OH radicals of any oxidation target material (P) in the influent introduced into the advanced oxidation treatment tank, k _{OH, pCBA} is the reaction rate for OH radicals of pCBA Constant, [pCBA] ₀ is the initial dosing concentration of pCBA, [pCBA] t is the final calculated concentration after advanced oxidation of pCBA, and [P] ₀ is any oxidation target in the influent introduced into the advanced oxidation treatment tank. Initial input concentration of (P), [P] t is the target value of the final treatment concentration of any oxidation target material (P) in the treated water treated by the advanced oxidation treatment. The method of claim 1, wherein in the fourth step, pCBA is added to the influent concentration ([pCBAl] o) to the influent sampled inflow water, which is placed in an experimental oxidation treatment tank installed separately from an advanced oxidation treatment tank. The final treatment concentration of pCBA ([pCBA] tr2) was determined by changing the final treatment concentration (pCBA) tr2 of pCBA contained in the treated water while changing the oxidation treatment conditions in the oxidation treatment tank. adjusting the oxidation treatment conditions to be similar to ([pCBA] t). The method of claim 1, wherein in the fourth step, distilled water in which pCBA is added at the concentration ([pCBAm] o) is added to an experimental oxidation treatment tank provided separately from the advanced oxidation treatment tank, and the oxidation treatment in the experimental oxidation treatment tank is performed. By changing the conditions, the final treatment concentration ([pCBA] tr3) of the pCBA contained in the treated water was measured, and thus the final treatment concentration ([pCBA] tr3) of the pCBA was determined by the final calculated concentration of pCBA ([pCBA] t). Adjusting the oxidation treatment conditions so as to be similar. The method according to any one of claims 1 to 3, wherein the ratio of the final processing concentration ([pCBA] tr) of pCBA and the final calculation concentration ([pCBA] t) of pCBA in the fourth step is 0.9 to 1.1. : The method for setting advanced oxidation water treatment process conditions, wherein the oxidation treatment conditions are adjusted to be 1. According to claim 1, wherein the oxidation treatment conditions in the fourth step is the concentration of hydrogen peroxide introduced, the intensity of ultraviolet (UV) to irradiate the advanced oxidation treatment tank, the inflow of the inflow water, the discharge flow rate of the treated water or the advanced oxidation treatment tank A method for setting advanced oxidation water treatment process conditions that are of magnitude. The method according to claim 5, wherein the concentration of hydrogen peroxide is higher than the initial input concentration of any oxidation target substance (P) contained in the influent. The method of claim 6,
The concentration of hydrogen peroxide is added to the influent, the product of the concentration of hydrogen peroxide is added to the inlet water ([H ₂ O _2]) with hydrogen peroxide and hydroxyl radical rate constant (k _{.OH, H2O2)} of the (k _{.OH, H2O2} x [H ₂ O ₂ ]) is 10 times the product of the concentration of any oxidation target ([P]) and the rate constant of the oxidation target and the hydroxyl radical ( _{k.OH, P} x [P]) Condition setting method of advanced oxidation water treatment process set to be abnormal.

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