JP2016179445A - Ultraviolet radiation amount information evaluation device and ultraviolet radiation amount information evaluation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ultraviolet radiation amount information evaluation device and an ultraviolet radiation amount information evaluation method capable of accurately evaluating adequacy of estimated ultraviolet radiation amount distribution information.SOLUTION: The ultraviolet radiation amount information evaluation device comprises: a radiation amount distribution estimation information acquisition part for acquiring estimation information of ultraviolet radiation amount distribution in a water conduction type ultraviolet processing device when ultraviolet is radiated to treatment target water; an inactivation ratio estimation value calculation part for calculating an estimation value of an inactivation ratio for every kind of average microbes present in the water conduction type ultraviolet processing device, based on an inactivation speed constant for every kind of the plural kinds of microbes included in sample water which is conducted to the water conduction type ultraviolet processing device for testing, and the estimation information of the ultraviolet radiation amount distribution information; and an adequacy evaluation part for, based on whether or not, the actual measurement value of the inactivation ratio for every kind of the microbes when the sample water is conducted, and the acquired estimation value are within a preset range and are similar to each other, creating evaluation information which evaluates adequacy of the estimation information of the acquired ultraviolet radiation amount distribution information.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a water flow type ultraviolet treatment device, and relates to an ultraviolet irradiation amount information evaluation apparatus and an ultraviolet irradiation amount information evaluation method for evaluating the validity of estimated ultraviolet irradiation amount distribution information.

As a countermeasure against inactivation of microorganisms such as chlorine-resistant pathogenic organisms (mainly Cryptosporidium) in water purification, the introduction of ultraviolet treatment equipment has been approved in Japan since 2007. As a condition for introducing UV treatment equipment, the law stipulates that the irradiation dose of UV (253.7nm) can always be kept at 10mJ / cm ² or more for 95% or more of water to be treated passing through the UV irradiation tank. ing. This ultraviolet ray irradiation amount is calculated by a value obtained by multiplying the irradiation intensity and the irradiation time.

  The conventional ultraviolet processing apparatus is devised so that one or a plurality of ultraviolet lamps are installed in the apparatus and the ultraviolet rays are uniformly irradiated in the irradiation tank. However, in reality, the intensity of ultraviolet rays varies depending on the distance from the ultraviolet lamp, and the passing time of the passing water flow is not uniform, so that the dose is biased in the irradiation tank.

  Due to such a bias in the irradiation amount, for example, the irradiation amount received by each particle when a large number of particles are introduced into the irradiation tank and passed therethrough varies depending on the flow path. Therefore, based on the amount of irradiation received by each particle, the number of corresponding particles for each amount of irradiation (the number of particles that have received the amount of irradiation) is counted to determine the ultraviolet irradiation amount distribution state in the irradiation tank. I can grasp it. By grasping the ultraviolet ray irradiation amount distribution state, it can be determined whether or not the ultraviolet ray processing apparatus satisfies the introduction conditions described above.

  However, as described above, since it is not realistic to count the amount of ultraviolet irradiation received by a large number of particles, usually, an irradiation amount distribution calculation program relating to ultraviolet irradiation in which the characteristics of the ultraviolet processing apparatus are incorporated in advance, Based on the fluid analysis information based on fluid dynamics (Computational Fluid Dynamics; CFD), the estimation information of the UV irradiation amount distribution in the irradiation tank when the target UV processing apparatus performs UV irradiation is generated. And it is judged whether the said ultraviolet processing apparatus is an apparatus which satisfy | filled introduction conditions using the estimated information of the produced | generated ultraviolet irradiation amount distribution.

K. Deguchi et al. (2005) UV-disinfection reactor validation by computational fluid dynamics and relation to biodosimetry and actinometry, Journal of Water and Environment Technology, 3 (1), pp.77-84 Water Technology Research Center "Ultraviolet Irradiation Equipment JWRC Technical Review Criteria" July 1, 2012

  By the way, since the information of the UV irradiation amount distribution generated as described above is estimated information calculated theoretically, it is necessary to evaluate its validity and confirm whether it is in accordance with the actual situation. . Specifically, using the estimated information of the UV irradiation amount distribution state, the rate of inactivation of microorganisms (inactivation rate) when sample water containing one type of microorganism with a known UV resistance degree is UV-treated by the apparatus. Calculate the estimated value, obtain the measured value of the rate of decrease in microorganisms when the sample water is actually treated with ultraviolet light, and determine whether the estimated value and the measured value are approximate or not. Determine the validity of the estimated information.

  However, in determining the validity of the UV irradiation distribution, the accuracy is low only by verification with one type of microorganism, and even if the estimated information is far from the actual situation, it may be judged to be appropriate was there.

  The present invention has been made in view of the above circumstances, and relates to a water flow type ultraviolet ray processing apparatus, and evaluates the validity of estimated ultraviolet ray dose distribution information with high accuracy, and an ultraviolet ray dose information evaluation device and an ultraviolet ray dose. The purpose is to provide an information evaluation method.

  In order to solve the above-mentioned problems, the ultraviolet irradiation amount information evaluation device of the present invention is a water flow type ultraviolet treatment device for purifying water by ultraviolet irradiation, and the water flow type ultraviolet ray when the water to be treated is irradiated with ultraviolet rays. A dose distribution estimation information acquisition unit that acquires estimation information of an ultraviolet ray dose distribution in the processing apparatus, an inactivation rate constant of each of a plurality of predetermined types of microorganisms, and an ultraviolet ray acquired by the dose distribution estimation information acquisition unit From the estimated information of the irradiation amount distribution information, the average in the water flow type ultraviolet treatment device when the water flow type ultraviolet treatment device performs ultraviolet light irradiation for each of the plurality of sample waters each containing the plurality of types of microorganisms. The inactivation rate estimated value calculation unit for calculating the estimated value of the inactivation rate for each type of the microorganism, and when the plurality of sample waters are allowed to flow through the water flow type ultraviolet treatment device, respectively, An inactivation rate actual value acquisition unit that acquires an actual value of inactivation rate for each type of organism, and an estimated value and actual value of the inactivation rate acquired for all types of the plurality of microorganisms are preset. A validity evaluation unit that generates evaluation information that evaluates the validity of the estimation information of the ultraviolet ray irradiation distribution information acquired by the irradiation dose distribution estimation information acquisition unit depending on whether it is within the range or approximate It is characterized by that.

The inactivation rate constant used here is a constant defined in the following equation representing the relationship between the ultraviolet irradiation amount and the survival rate of microorganisms, and a different constant is used for each microorganism species.
Survival rate = exp {-(UV irradiation amount [mJ / cm ² ]) / (inactivation rate constant [mJ / cm ² ])}

  Moreover, the ultraviolet irradiation amount information evaluation apparatus of another form is a water flow type ultraviolet treatment device that purifies water by ultraviolet light irradiation, and the ultraviolet light irradiation in the water flow type ultraviolet treatment device when the treatment target water is irradiated with ultraviolet rays. A dose distribution estimation information acquisition unit that acquires dose distribution estimation information, an inactivation rate constant of each of a plurality of types of microorganisms having inactivation rate constants different from each other by a predetermined value and different from each other, and the dose distribution estimation From the estimated information of the ultraviolet irradiation amount distribution information acquired by the information acquisition unit, the water passing ultraviolet rays when the water passing through the ultraviolet ray processing apparatus performs ultraviolet irradiation on the sample water containing the plurality of types of microorganisms. When the average water in the treatment apparatus is used, the inactivation rate estimated value calculation unit for calculating the estimated value of the inactivation rate for each type of the microorganism, and when the sample water is passed through the water flow type ultraviolet treatment device, Above An inactivation rate actual value acquisition unit that acquires an actual value of inactivation rate for each type of organism, and an estimated value and actual value of the inactivation rate acquired for all types of the plurality of microorganisms are preset. A validity evaluation unit that generates evaluation information that evaluates the validity of the estimation information of the ultraviolet ray irradiation distribution information acquired by the irradiation dose distribution estimation information acquisition unit depending on whether it is within the range or approximate It is characterized by that.

  The ultraviolet irradiation amount information evaluation method of the present invention is an ultraviolet irradiation amount information evaluation method using an ultraviolet irradiation amount information evaluation device, and is a water-passing ultraviolet treatment device that purifies water by ultraviolet irradiation and irradiates water to be treated with ultraviolet rays. A dose distribution estimation information acquisition step for acquiring estimation information of the UV irradiation dose distribution in the water flow type UV treatment apparatus, an inactivation rate constant for each of a plurality of predetermined types of microorganisms, and the dose distribution From the estimation information of the ultraviolet irradiation amount distribution information acquired in the estimation information acquisition step, in the water flow type ultraviolet treatment device, when performing ultraviolet irradiation for each of a plurality of sample waters each containing the plurality of types of microorganisms, Inactivation rate estimated value calculation step for calculating an average value of the inactivation rate for each type of the microorganisms in the water flow type ultraviolet treatment device, and the water flow type ultraviolet ray When each of the plurality of sample water is passed through a physical device, the inactivation rate actual value acquisition step for acquiring the actual inactivation rate for each type of the microorganism, and the types of all the plurality of microorganisms, The estimated information of the UV irradiation distribution information acquired in the irradiation distribution estimation information acquisition step depending on whether or not the acquired estimated value of the inactivation rate and the actual measurement value are within a preset range and approximate to each other. And a validity evaluation step for generating evaluation information for evaluating the validity of.

  In addition, another form of the ultraviolet irradiation amount information evaluation method is an ultraviolet irradiation amount information evaluation method using an ultraviolet irradiation amount information evaluation device, which is a water-passing ultraviolet treatment device that purifies water by ultraviolet irradiation, and irradiates the water to be treated with ultraviolet rays. The dose distribution estimation information acquisition step for acquiring the estimation information of the UV irradiation dose distribution in the water flow type UV treatment device and the inactivation rate constant are different from each other by a predetermined value and the host bacteria are different from each other. From the inactivation rate constant of each of a plurality of types of microorganisms and the estimated information of the UV irradiation amount distribution information acquired in the irradiation amount distribution estimation information acquisition step, the plurality of types of microorganisms are converted by the water flow type UV treatment device. Inactivation rate for calculating an estimated value of the inactivation rate for each type of the microorganisms in the water flow type ultraviolet treatment device when the sample water containing the sample is irradiated with ultraviolet rays A constant value calculating step, an inactivation rate actual value acquisition step for acquiring an actual inactivation rate for each type of the microorganism when the sample water is passed through the water flow type ultraviolet treatment device, and the plural The ultraviolet rays acquired in the irradiation amount distribution estimation information acquisition step according to whether or not the acquired estimated value and actual measured value of the inactivation rate are within a preset range and approximated for all types of microorganisms And a validity evaluation step for generating evaluation information for evaluating the validity of the estimation information of the dose distribution information.

  According to the ultraviolet irradiation amount information evaluation apparatus and the ultraviolet irradiation amount information evaluation method of the present invention, it is possible to evaluate the validity of the estimated ultraviolet irradiation amount distribution information with high accuracy with respect to the water flow type ultraviolet processing apparatus. .

It is a block diagram which shows the structure of the ultraviolet-ray processing apparatus management system using the ultraviolet irradiation amount distribution information evaluation apparatus by one Embodiment of this invention. It is a flowchart which shows operation | movement of the ultraviolet irradiation amount distribution information evaluation apparatus by one Embodiment of this invention. It is a graph which shows the example of the estimation information of the ultraviolet irradiation amount distribution acquired with the ultraviolet irradiation amount distribution information evaluation apparatus by one Embodiment of this invention. It is a graph which shows the example of the exit density | concentration value calculated from the estimation information of the ultraviolet irradiation amount distribution acquired with the ultraviolet irradiation amount distribution information evaluation apparatus by one Embodiment of this invention. It is a table | surface which shows the example of the information regarding the microorganisms included in the sample water used in order to acquire the inactivation rate measured value with the ultraviolet irradiation amount distribution information evaluation apparatus by one Embodiment of this invention.

  As an embodiment of the present invention, an irradiation dose distribution evaluation apparatus that evaluates the validity of the preliminarily generated information relating to the estimation information of the ultraviolet irradiation amount distribution state in the irradiation tank of the water flow type ultraviolet treatment apparatus will be described below.

<Configuration of Ultraviolet Processing Device Management System Using Irradiation Distribution Information Evaluation Device According to One Embodiment>
The ultraviolet processing apparatus management system 1 using the irradiation amount distribution information evaluation apparatus according to the present embodiment includes an ultraviolet processing apparatus 10, a microorganism concentration measurement apparatus 20, and an irradiation amount distribution information evaluation apparatus 30.

  The ultraviolet treatment apparatus 10 includes an external line irradiation tank 11 and an ultraviolet lamp 12 installed in the ultraviolet irradiation tank 11. In the ultraviolet irradiation tank 11, the water to be treated is introduced from the irradiation tank inlet 111, the ultraviolet ray is irradiated from the ultraviolet lamp 12, the water is passed through the tank, and the water is discharged from the irradiation tank outlet 112.

  The microorganism concentration measuring apparatus 20 is a sample water that flows out from the irradiation tank outlet 112 of the ultraviolet irradiation tank 11 when a sample water containing a predetermined type of microorganisms at a predetermined concentration is experimentally passed through the ultraviolet irradiation tank 11. Measure microbial concentration. In the present embodiment, a plurality of sample waters prepared so as to contain a plurality of types of microorganisms having different ultraviolet light resistance (inactivation rate constants) at a predetermined concentration are allowed to flow, and the sample water microorganisms discharged for each sample water Measure the concentration. Here, the measurement of the microorganism concentration is performed by a known method suitable for each type of microorganism.

  The dose distribution information evaluation device 30 includes an inactivation rate constant storage unit 31, a dose distribution estimation information acquisition unit 32, a sample water information acquisition unit 33, an inactivation rate estimation value calculation unit 34, and an inlet concentration value acquisition. Unit 35, outlet concentration value acquisition unit 36, inactivation rate actual measurement value acquisition unit 37, validity evaluation unit 38, and information output unit 39.

  The inactivation rate constant storage unit 31 stores an inactivation rate constant that is calculated in advance for each type of microorganism and that indicates an ultraviolet irradiation amount (= ultraviolet ray resistance) required for inactivation of a predetermined amount.

  The irradiation amount distribution estimation information acquisition unit 32 generates ultraviolet rays on the water to be treated by the ultraviolet ray processing apparatus 10 generated from the irradiation amount distribution calculation program relating to ultraviolet ray irradiation that is incorporated in advance with respect to the ultraviolet ray treatment apparatus 10 and the fluid analysis information by CFD. The estimated information of the ultraviolet irradiation amount distribution in the ultraviolet irradiation tank 11 at the time of irradiation is acquired.

  The sample water information acquisition unit 33 acquires the type information of microorganisms contained in each of the plurality of sample waters to be passed through the ultraviolet irradiation tank 11 and the microorganism concentration value in each sample water.

  The inactivation rate estimated value calculation unit 34 acquires the inactivation rate constant corresponding to the type information of each microorganism acquired by the sample water information acquisition unit 33 from the inactivation rate constant storage unit 31 and acquires the acquired inactivation rate. Based on the constant and the estimation information of the ultraviolet irradiation distribution information acquired by the irradiation distribution estimation information acquisition unit 32, an average estimated value of the inactivation rate for each type of microorganism in the ultraviolet irradiation tank 11 is calculated.

  The inlet concentration value acquisition unit 35 acquires the microorganism concentration value in each sample water acquired by the sample water information acquisition unit 33 as the inlet concentration value of each microorganism.

  The outlet concentration value acquisition unit 36 acquires the microorganism concentration value in each sample water measured by the microorganism concentration measuring device 20 as the outlet concentration value of each microorganism.

  The inactivation rate actual value acquisition unit 37 obtains each sample water from the inlet concentration value of each microorganism acquired by the inlet concentration value acquisition unit 35 and the outlet concentration value of each microorganism acquired by the outlet concentration value acquisition unit 36. The actual measurement value of the inactivation rate for each type of microorganism in the ultraviolet irradiation tank 11 when actually treating with UV is obtained.

  The validity evaluation unit 38 approximates that the estimated value and actual measurement value of the acquired inactivation rate are within a preset range for all types of microorganisms contained in the plurality of sample waters that have been passed. Depending on whether or not there is, evaluation information that evaluates the validity of the estimation information of the ultraviolet ray dose distribution information acquired by the dose distribution estimate information acquisition unit 32 is generated.

  The information output unit 39 outputs the evaluation information generated by the validity evaluation unit 38 by text display or voice.

<Operation of UV Treatment Device Management System Using Irradiation Distribution Information Evaluation Device According to One Embodiment>
Next, the operation of the ultraviolet ray processing apparatus management system 1 using the dose distribution information evaluation apparatus according to the present embodiment will be described with reference to the flowchart of FIG. FIG. 2 shows processing executed by the dose distribution information evaluation device 30 when the system 1 is in operation.

In the present embodiment, two types of microorganisms MS2 and φx174 having different inactivation rate constants are used as sample water to be experimentally passed through the ultraviolet irradiation tank 11 of the ultraviolet treatment apparatus 10 so that the concentration value is 10,000 PFU / ml. The case where two prepared sample waters S ₁ and S ₂ are used will be described.

  First, the dose distribution estimation information acquisition unit 32 of the dose distribution information evaluation device 30 generates a dose distribution calculation program related to ultraviolet irradiation previously incorporated in the ultraviolet processing device 10 and fluid analysis information by CFD. The estimation information of the ultraviolet ray irradiation amount distribution in the ultraviolet ray irradiation tank 11 when the ultraviolet ray treatment apparatus 10 irradiates the water to be treated with ultraviolet rays is acquired (S1). Here, it is assumed that the information shown in the graph A of FIG.

Next, the user of the system 1, first, information of the microorganism MS2 contained in the sample water S ₁ and the concentration value 10,000 PFU / ml of sample water S in ₁ of this microorganism MS2 is input, the dose distribution data evaluator 30 sample water information acquisition units 33 (S2).

  Next, the inactivation rate estimated value calculation unit 34 acquires the inactivation rate constant corresponding to the microorganism MS 2 acquired by the sample water information acquisition unit 33 from the inactivation rate constant storage unit 31. Then, the average inactivation rate of the microorganism MS2 in the ultraviolet irradiation tank 11 is estimated from the acquired inactivation rate constant and the estimated information of the ultraviolet irradiation amount distribution information acquired by the irradiation amount distribution estimation information acquisition unit 32. A value is calculated (S3).

On the other hand, the microorganism concentration value 10,000 PFU / ml in the sample water S ₁ acquired by the sample water information acquisition unit 33 in step S2 is acquired by the inlet concentration value acquisition unit 35 as the inlet concentration value of the microorganism MS2 (S4). ).

With these information acquired, the sample water S ₁ containing the microorganism MS2 at a concentration value of 10,000 PFU / ml is introduced from the irradiation tank inlet 111 of the ultraviolet irradiation tank 11 and irradiated with ultraviolet rays while receiving irradiation from the ultraviolet lamp 12. Water passes through the irradiation tank 11 and flows out from the irradiation tank outlet 112. Then, the microorganism concentration measuring device 20 measures the microorganism concentration of the sample water S ₁ that has flowed out. The measured concentration of microorganisms is obtained at the outlet density value acquisition unit 36 as the outlet concentration value of microorganisms MS2 water sample S in ₁ (S5).

Next, in the inactivation rate actual value acquisition unit 37, from the inlet concentration value of the microorganism MS2 acquired by the inlet concentration value acquisition unit 35 and the outlet concentration value of the microorganism MS2 acquired by the outlet concentration value acquisition unit 36, when the ultraviolet treatment in fact ultraviolet irradiation chamber 11 the water sample S _1, measured value of the inactivation rate of microbial MS2 is calculated (S6).

  Here, since the calculation process of the inactivation rate actual measurement value for another type of microorganism φx174 has not been executed yet (“NO” in S7), the process returns to step S2 and the same process is executed for the microorganism φx174 ( S2 to S6).

When the calculation process of the inactivation ratio estimate and inactivation ratio measured value on microbial φx174 ends moved to ( "YES" in S7) step S8, the validity evaluation portion 38, the water sample S was passed through ₁ and S ₂ For each of the microorganisms MS2 and φx174 included in the above, it is determined whether or not the acquired estimated value of the inactivation rate and the actually measured value are within a preset range and approximate (S8). As a result of the determination, regarding all the microorganisms MS2 and φx174 in the sample water that has passed, when it is determined that the estimated inactivation rate obtained and the actual measurement value are approximate (“YES” in S8) The evaluation result obtained by evaluating that the estimation information acquired by the dose distribution estimation information acquisition unit 32 is “appropriate” is generated (S9).

  In addition, when it is determined that the obtained estimated value of inactivation rate and the actual measured value are not approximated for at least one of the types of microorganisms ("NO" in S8), dose distribution estimation information acquisition The estimation result obtained by evaluating that the estimation information acquired by the unit 32 is “invalid” is generated (S10).

  The evaluation result generated in step S9 or S10 is output by text display or voice by the information output unit 39 (S11).

  As described above, by performing verification using a plurality of types of microorganisms having different inactivation rate constants, it is possible to obtain the estimated information of the UV irradiation distribution obtained in advance as compared with the case of using only one type of microorganism. An example in which the accuracy of the evaluation information is increased will be described below.

  For example, the ultraviolet irradiation amount distribution is actually in a state as shown in the graph A of FIG. 3 (A shows the true distribution state), as shown in a graph B different from the actual one. It is assumed that the estimated information of the ultraviolet ray irradiation amount distribution is acquired by the irradiation amount distribution estimation information acquisition unit 32.

The inactivation rate estimated value calculation unit 34 calculates the inactivation rate estimated value using only sample water containing the microorganism X having an inactivation rate constant D ₀ = 10 mJ / cm ^{2 at} a concentration value of 10,000 PFU / ml. Further, a case is considered in which the inactivation rate actual measurement value is calculated by the inactivation rate actual value acquisition unit 37.

  Here, if the outlet concentration value of the ultraviolet irradiation tank 11 is calculated from the inactivation rate estimated value based on the estimation information of the ultraviolet irradiation amount distribution in the graph B, the result is as shown in the graph B in FIG. When water is passed through the tank 11, the outlet concentration value of the microorganism is estimated to be 800 PFU / ml.

  On the other hand, when the outlet concentration value of the ultraviolet irradiation tank 11 is calculated from the inactivation rate estimated value based on the true ultraviolet irradiation amount distribution shown by the graph A, it becomes as shown in the graph A of FIG. Similarly, the outlet concentration value of the microorganism when passing through the irradiation tank 11 is 800 PFU / ml.

  Similarly, when the estimation information of the UV irradiation dose distribution as shown in the graph C of FIG. 3 different from the actual is acquired by the dose distribution estimation information acquisition unit 32, the outlet concentration value of the microorganism is 800 PFU / Estimated ml.

That is, as shown in FIG. 3, the inactivation measurement constant D ₀ = 10 mJ / cm ² as shown in FIG. 4 although the graphs B and C differ greatly from the graph A, which is the true distribution information. For all microorganisms X, the same outlet concentration value is calculated.

  Therefore, when the verification is performed only with the microorganism X, the estimation information of the ultraviolet irradiation amount distribution as shown in the graph B or C is also determined to be “valid”, and the evaluation process Accuracy will be lowered.

  In contrast to this, by evaluating the validity of the estimation information of the UV irradiation dose distribution using a plurality of sample waters each containing a plurality of types of microorganisms having different inactivation rate constants as in this embodiment, an estimation different from the actual one is performed. As for information, even if the estimated value of the inactivation rate approximates to the actually measured value in one microorganism, it is not approximated in other microorganisms, and is judged to be “invalid”, and the accuracy of evaluation processing is greatly improved.

  According to the above embodiment, it is possible to evaluate the validity of the estimated UV irradiation amount distribution information with high accuracy with respect to the water flow type UV processing device.

  In the above-described embodiment, the case where the validity of the estimation information of the UV irradiation amount distribution is evaluated using two sample waters each containing two types of microorganisms, but three or more including three or more types of microorganisms is described. More accurate evaluation processing can be performed by using the sample water.

  In the above-described embodiment, a case has been described in which a plurality of sample waters each containing a plurality of types of microorganisms having different inactivation rate constants are passed through the ultraviolet irradiation tank 11 separately. If the activation rate constants differ by more than a predetermined value and the host bacteria that affect the measurement method are different, they do not interfere with each other in the microorganism concentration measurement, so they should be prepared to be included in one sample water and verified. Is also possible.

For example, as shown in FIG. 5, a microorganism QB having an inactivation rate constant D ₀ = 5.9 mJ / cm ² , a microorganism MS ^{2 having} an inactivation rate constant D ₀ = 8.8 mJ / cm ² , and an inactivation rate constant D ₀ = 2.3 mJ / cm ² of microorganisms T4, microorganism inactivation rate constant is not installed lambda, and inactivated rate constants D ₀ = 1.1 mJ / cm ² of microorganisms Faiekkusu174, among the five microorganisms, microorganisms MS2 and Faiekkusu174 Since the inactivation rate constants are greatly different and the host bacteria are different from each other, there is no interference when measuring the outlet concentration. Even if these two types of microorganisms are included in the same sample water and put into the ultraviolet irradiation tank 11, The outlet concentration value can be measured by each measuring method.

  As described above, the sample water including a plurality of microorganisms is used to evaluate the validity of the estimation information of the UV irradiation amount distribution, thereby reducing the number of times the sample water is charged into the UV irradiation tank 11 as described above. The same effect as the embodiment can be obtained.

DESCRIPTION OF SYMBOLS 1 ... Ultraviolet processing apparatus management system 10 ... Ultraviolet processing apparatus 11 ... Ultraviolet irradiation tank 12 ... Ultraviolet lamp 20 ... Microorganism concentration measuring device 30 ... Irradiation amount distribution information evaluation apparatus 31 ... Inactivation rate constant memory | storage part 32 ... Irradiation amount distribution estimation information Acquisition unit 33 ... Sample water information acquisition unit 34 ... Inactivation rate estimated value calculation unit 35 ... Inlet concentration value acquisition unit 36 ... Outlet concentration value acquisition unit 37 ... Inactivation rate actual value acquisition unit 38 ... Validity evaluation unit 39 ... Information Output unit 111 ... Irradiation tank inlet 112 ... Irradiation tank outlet

Claims (4)

Dose distribution estimation information acquisition that acquires UV irradiation dose distribution estimation information in the water flow type UV treatment device when UV light is irradiated to the water to be treated with a water treatment type UV treatment device that purifies the water by UV irradiation. And
From the inactivation rate constant of each of a plurality of predetermined types of microorganisms and the estimation information of the UV irradiation amount distribution information acquired by the irradiation amount distribution estimation information acquisition unit, the plurality of types of the plurality of types of microorganisms Inactivation rate estimated value for calculating an average value of the inactivation rate for each type of the microorganisms in the water flow type ultraviolet treatment apparatus when the plurality of sample waters each containing the microorganisms are irradiated with ultraviolet rays A calculation unit;
An inactivation rate actual measurement value acquisition unit for acquiring an actual measurement value of the inactivation rate for each type of the microorganism when each of the plurality of sample waters is passed through the water flow type ultraviolet treatment device;
With respect to all types of the plurality of microorganisms, the acquired inactivation rate estimated value and the actually measured value are within the preset range, and are acquired by the irradiation dose distribution estimation information acquisition unit. And a validity evaluation unit that generates evaluation information for evaluating the validity of the estimated information of the ultraviolet irradiation amount distribution information. Dose distribution estimation information acquisition that acquires UV irradiation dose distribution estimation information in the water flow type UV treatment device when UV light is irradiated to the water to be treated with a water treatment type UV treatment device that purifies the water by UV irradiation. And
From the inactivation rate constant of each of a plurality of types of microorganisms having inactivation rate constants different from each other by a predetermined value or more and having different host bacteria, and the estimation information of the ultraviolet ray irradiation distribution information acquired by the irradiation amount distribution estimation information acquisition unit When the sample water containing the plurality of types of microorganisms is irradiated with ultraviolet rays in the water flow type ultraviolet treatment device, the average inactivation rate for each type of the microorganisms in the water flow type ultraviolet treatment device An inactivation rate estimated value calculating unit for calculating an estimated value;
An inactivation rate actual value acquisition unit for acquiring an actual measurement value of the inactivation rate for each type of the microorganism when the sample water is passed through the water flow type ultraviolet treatment device;
With respect to all types of the plurality of microorganisms, the acquired inactivation rate estimated value and the actually measured value are within the preset range, and are acquired by the irradiation dose distribution estimation information acquisition unit. And a validity evaluation unit that generates evaluation information for evaluating the validity of the estimated information of the ultraviolet irradiation amount distribution information. An ultraviolet irradiation information evaluation method using an ultraviolet irradiation information evaluation device,
Dose distribution estimation information acquisition that acquires UV irradiation dose distribution estimation information in the water flow type UV treatment device when UV light is irradiated to the water to be treated with a water treatment type UV treatment device that purifies the water by UV irradiation. Steps,
From the inactivation rate constant of each of a plurality of predetermined types of microorganisms and the estimation information of the ultraviolet irradiation distribution information acquired in the irradiation distribution estimation information acquisition step, Inactivation rate estimated value for calculating an average value of the inactivation rate for each type of the microorganisms in the water flow type ultraviolet treatment apparatus when the plurality of sample waters each containing the microorganisms are irradiated with ultraviolet rays A calculation step;
Inactivation rate actual measurement value acquisition step for acquiring an actual measurement value of the inactivation rate for each type of the microorganisms when each of the plurality of sample waters is passed through the water flow type ultraviolet treatment device;
With respect to all types of the plurality of microorganisms, the acquired inactivation rate estimation value and the actual measurement value are acquired in the irradiation amount distribution estimation information acquisition step depending on whether or not they are within a preset range and approximate. And a validity evaluation step for generating evaluation information for evaluating the validity of the estimated information of the ultraviolet irradiation dose distribution information. An ultraviolet irradiation information evaluation method using an ultraviolet irradiation information evaluation device,
Dose distribution estimation information acquisition that acquires UV irradiation dose distribution estimation information in the water flow type UV treatment device when UV light is irradiated to the water to be treated with a water treatment type UV treatment device that purifies the water by UV irradiation. Steps,
From the inactivation rate constant of each of a plurality of types of microorganisms having inactivation rate constants different from each other by a predetermined value or more and different host bacteria, and the estimation information of the ultraviolet ray irradiation distribution information acquired in the irradiation amount distribution estimation information acquisition step When the sample water containing the plurality of types of microorganisms is irradiated with ultraviolet rays in the water flow type ultraviolet treatment device, the average inactivation rate for each type of the microorganisms in the water flow type ultraviolet treatment device An inactivation rate estimated value calculating step for calculating an estimated value;
Inactivation rate actual measurement value acquisition step of acquiring an actual measurement value of the inactivation rate for each type of the microorganism when the sample water is passed through the water flow type ultraviolet treatment device;
With respect to all types of the plurality of microorganisms, the acquired inactivation rate estimation value and the actual measurement value are acquired in the irradiation amount distribution estimation information acquisition step depending on whether or not they are within a preset range and approximate. And a validity evaluation step for generating evaluation information for evaluating the validity of the estimated information of the ultraviolet irradiation dose distribution information.

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