KR100250557B1 - Apparatus for radioactive liquid-waste treatment - Google Patents

Abstract

The present invention reduces the amount of equipment by automating the work to give time to the operating surface.

The constitution is connected to a waste liquid treatment device 4 through an inlet pipe 10 to a waste liquid import container 3 to which waste liquid import pipes 1 and 2 are connected, and an outlet pipe downstream of the waste liquid treatment device 4. The waste liquid flow path switching device 8 is connected through (9). One downstream side of the waste liquid flow channel switching device 8 is connected to the plurality of storage containers 5 through the transfer pipe 7, and the other side thereof is connected to the waste liquid import container 3 through the return pipe 6. A regular sampling device 13 and a continuous sampling device 14 are provided in the outlet pipe 9, and these devices 13 and 14 are connected to the automatic water quality analyzer 11. The automatic water quality analyzer 11 has a measurement unit 15 and a diagnosis unit 16, and the signal from the diagnosis unit 16 is transmitted to the waste fluid flow channel switching device 8. The waste liquid treatment apparatus 4 is equipped with the hollow fiber membrane filter 4a and the ion exchange resin tower 4b.

Description

Radiation Waste Treatment Facility

The present invention relates to a radiation waste liquid treatment facility for treating radiation waste liquid generated in a nuclear power plant.

Waste fluids generated from nuclear power plants are managed as they are well known in the art, as low-conductive waste liquids (LCW) and high-conductivity waste liquids (HCW), which are radiation waste liquids, and usually do not contain radioactive materials but are generated in nuclear power plants. Washing waste liquid LD and shower waste liquid HSD which are processed, and storm waste liquid SD, such as a non-radioactive condensate, are classified.

Among these, the low conductivity waste liquid and the high conductivity waste liquid which are radiation waste liquids are processed as follows. That is, the low conductivity waste liquid is mainly a waste liquid generated from equipment such as a pipe, a valve, a pump, a heat exchanger, a filter, or a supernatant of backwash water of various filters. Therefore, it is common to perform ion exchange treatment after filtration because there are few ionic components and the concentration of solids such as iron rust is high.

On the other hand, high-conductivity waste liquids are mainly phase drain waste liquids in a nuclear power plant, chemical waste liquids generated from an analysis chamber, and chemical waste liquids generated by regenerating an ion exchange resin. Therefore, since the conductivity is high, it is common to carry out ion exchange treatment after evaporation concentration.

In the case of using the hollow fiber membrane filter in the filtration of low conductivity waste liquid, the phase drain waste liquid in a nuclear power plant with relatively low conductivity may be mixed with the low conductivity waste liquid in the high conductivity waste liquid in view of its filtration performance.

However, the import container that imports the waste liquid in any kind of waste liquid treatment is provided with a plurality of containers.When one container is full, the imported container is switched to another import container to import the waste liquid, and the so-called batch treatment for processing the waste liquid in the container filled therebetween. In a way. The reason is that after the treatment, it is collected in a sump tank or a liquid tank to analyze, evaluate and treat the water quality in the sump tank for each batch.

The water quality analysis method was performed by the so-called manual analysis which collects sample water directly from sampling points, such as piping, and carries it to an analysis room for analysis. In addition, the analysis result was diagnosed by an analyser or an operator. Some water quality analysis items, conductivity, and solid content concentration (converted by turbidimeter) are also known by using a chemical instrument to achieve automatic measurement.

Since the conventional radiation waste liquid treatment is a batch treatment, the sump tank or the liquid tank needs to import the treated water after treating the waste liquid stored in the waste liquid import container. There is a task to do.

In addition, when the wastewater to be recovered is collected in a plurality of storage containers, the analytical institution analyzes the quality of the treated water, so the collection to the plurality of storage containers is operated to avoid nights or holidays. Since a series of operations of water quality analysis require several hours, there is a problem of adding some load to the time margin of the wastewater treatment facility.

In addition, when the upper drain is to be mixed with the low conductivity waste liquid, the water quality is expected to be slightly different from that of the conventional low conductivity waste liquid alone. Therefore, the water quality analysis of the treated water also needs to be confirmed in multiple items. However, there is a problem that the burden on the analyst increases.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and the conventional batch treatment of the waste liquid treatment facility is carried out continuously from the treatment to the recovery even when the upper drain is mixed with the low conductivity waste liquid to perform the work that the analytical staff or the operator bears. It is an object of the present invention to provide a radioactive waste liquid treatment facility that provides automation and at the same time provides operational time and reduces the amount of equipment.

1 is a system diagram showing a first embodiment of a radiation waste liquid treatment facility according to the present invention.

2 is a system diagram showing a second embodiment of a radioactive waste liquid treatment facility in accordance with the present invention.

3 is a system diagram showing a third embodiment of a radioactive waste liquid treatment facility in accordance with the present invention.

4 is a system diagram showing a fourth embodiment of a radioactive waste liquid treatment facility in accordance with the present invention.

5 is a system diagram showing a fifth embodiment of a radioactive waste liquid treatment facility in accordance with the present invention.

6 is a system diagram showing a radiation concentration measuring means in FIG.

The present invention provides a waste liquid processing container connected to a waste liquid import container and a waste liquid import container, a flow path switching device connected to the waste liquid processing device, a plurality of storage containers connected to a downstream side of the flow path switching device through a transfer pipe, A water quality automatic analysis device branched from the return pipe returning to the waste import container, a pipe connecting the waste liquid treatment device and the flow path switching device, and the diagnostic signal of the water quality automatic sorting device is input to the flow path switching device. The waste liquid treatment device is characterized in that the hollow fiber membrane filter and the ion exchange resin tower is connected in series.

In the above-described radioactive waste liquid facility, insoluble components in the mixed waste liquid of low conductivity waste and phase drain can be efficiently removed by the hollow fiber membrane filter, and a treatment device capable of removing dissolved components such as ion exchange resin tower is combined. By doing so, treated water with stable water quality can be obtained.

After the start of treatment, the treated water is returned to the waste liquid import container for a certain period of time, and in the meantime, it is confirmed that the water quality control item of the treated water has reached the target value. Thereafter, the wastewater is collected in a plurality of storage containers. If the water quality management item of the treated water does not reach the target value during recovery, the treated water is returned to the wastewater import container.

The above conversion is carried out by a periodic or continuous diagnosis of water quality management items of the treated water flowing downstream of the wastewater treatment apparatus by an automatic water quality analysis apparatus, thereby enabling continuous treatment and recovery.

Water quality management items include conductivity, pH, solids concentration, silica concentration, chlorine concentration, COD, boron concentration, TOC, total γ radioactivity, radionuclide concentration, and so on. I can measure it.

Therefore, the measurement unit is passed through the water quality automatic analysis device by a combination of pipes and valves to the predetermined sample conditions of each measurement unit, and the data diagnosis device, data collection device, and data output device constructed by a computer to process the obtained measurement signal. The water quality automatic analyzer can be configured by having a predetermined program and a storage capacity.

(Example)

A first embodiment of a radioactive waste liquid treatment facility according to the present invention will be described with reference to FIG. 1.

In Fig. 1, reference numerals 1 and 2 denote different waste liquid import pipes from the respective systems, and these waste liquid import pipes 1 and 2 are connected to the waste liquid import container 3. The low-conductive waste liquid flows into the waste liquid import container 3 from one waste liquid import pipe 1, and the waste drain waste liquid flows from the other waste liquid import pipe 2, and both are mixed and collected.

The mixing of the both is not limited to the waste liquid import container 3, and it does not matter even in the sump tank, the drainage pipe, or the nipple mouth before it. The waste liquid import pipes 1 and 2 are provided as headers or inflow pipes for one or more waste liquid sources.

The waste liquid treatment apparatus 4 is connected to the downstream side of the waste liquid import container 3 through an inlet pipe 10. The waste liquid treatment apparatus 4 is a hollow fiber membrane filter 4a and an ion exchange resin tower 4bb connected in series. The filtration treatment by the hollow fiber membrane filter 4a and the ion exchange by the ion exchange resin tower 4b are performed. Carry out processing.

The insoluble components in the waste liquid in which the upper drain is mixed with the low conductivity waste liquid by the waste liquid treatment apparatus 4 are efficiently removed by the hollow fiber membrane filter 4a and the dissolved components by the ion exchange resin tower 4b. do.

One end of the outlet pipe 9 is connected to the downstream side of the waste liquid treatment device 4, and the waste liquid flow path switching device 8 is connected to the other end of the outlet pipe 9. The waste liquid flow path switching device 8 is connected to a transfer pipe 7 connected to the plurality of storage containers 5 provided downstream thereof, and a return pipe 6 connected to the waste liquid import container 3. The waste liquid flow path switching device 8 may be provided with a transfer pipe for returning the inlet pipe 10 or a transfer pipe to a container for collecting high conductivity waste liquid.

The outlet pipe 9 is provided with a periodic sample collection device 13 and a continuous sample collection device 14 as sampling points for periodically or continuously collecting the treated water treated by the waste liquid treatment device 4. Samples collected from these devices 13 and 14 are guided to the automatic water quality analyzer 11 and temporarily stored by the measuring unit 15 therein.

The automatic water quality analyzer 11 includes a measurement unit 15 and a diagnosis unit 16, and the measurement unit 15 and the diagnosis unit 16 are electrically connected to each other. The diagnostic section 16 is provided with a signal path for transmitting the transfer disallowed signal 12 of the transfer of the treated water to the plurality of storage containers 5 to the wastewater flow channel switching device 8. Depending on the configuration of the logic circuit in the diagnostic section 16, the transfer permission signal 12 may be a transfer permission signal, a return permission signal to the waste liquid import container 3, or a return permission signal.

Then, in the radioactive waste liquid treatment facility shown in FIG. 1 according to the first embodiment, the waste liquid collected in the waste liquid import container 3 through the waste liquid import pipe (one or both of 1 or 2) of the radiation waste liquid is a hollow fiber membrane filter 4a. Filtration, ion exchange, etc., are carried out in the waste liquid treatment device 4 formed of the ion exchange resin tower 4b, and the water quality automatic analysis device is collected from the continuous sample collection device 14 installed in the outlet pipe 9. After being temporarily stored in the measuring unit 15 in (11), it is continuously measured and transferred to the plurality of storage containers 5 or the waste liquid import container 3.

Since the condition of the treatment apparatus is not stable at the start of the treatment and the target treatment water quality cannot be achieved, the treatment water is returned to the waste liquid container 3 through the return pipe 6 for a predetermined time. Is returned. After a certain time, when it is diagnosed that the treated water of the target water quality is obtained by the diagnostic unit 16 of the automatic water quality analyzer 11, the wastewater flow channel switching device 8 is switched, and the treated water is transferred to the transfer pipe 7. It is conveyed to the plurality of storage containers (5) through.

When the water quality of the treated water decreases during the treatment, the transfer disallowed signal 12 is sent from the diagnosis unit 16 of the automatic water quality analyzer 11 toward the waste flow channel switching circuit 8, and the waste flow is imported into the flow path. The container 5 or the inlet pipe 10 or a container (not shown) for collecting high conductivity waste liquid is converted.

Water quality management items analyzed by the automated water quality analyzer 11 for the collected samples include solids concentration, silica concentration, chlorine concentration, chemical oxygen content (COD), boron concentration, organic impurities (TOC), conductivity, pH, radioactivity concentration, etc. However, since it depends on the setting conditions of the water quality management items that require continuous monitoring and the selection of measuring instruments, some or all of the above items may be used as management items.

Next, a second embodiment of the radioactive waste liquid treatment equipment according to the present invention will be described with reference to FIG. In FIG. 2 of the second embodiment, the same components as those in FIG. 1 are denoted by the same reference numerals, and description of overlapping portions will be omitted.

When mixed with a low-drain waste liquid, if the organic impurities (hereinafter referred to as TOC) are contained in a large amount in the upper drain, the mixed waste liquid TOC concentration is also expected to increase as compared with the low-conductive waste liquid alone. do.

In the waste liquid processing apparatus 4 connected to the inlet pipe 10 connected to the waste liquid import container 3 shown in FIG. 1 as the treatment of the TOC-containing waste liquid, the second embodiment is as shown in FIG. The hollow fiber membrane filter 4a, the TOC removal device 4c, and the ion exchange resin tower 4b are connected in series. The filtration treatment by the hollow fiber membrane filter 4a, the ion exchange treatment by the ion exchange resin tower 4b, and the TOC removal treatment by the TOC removal apparatus 4c are performed.

The combination and permutation of the hollow fiber membrane filter 4a, the TOC removal device 4c, and the ion exchange resin tower 4b may be any way, but as shown in FIG. 2, the hollow fiber membrane filter 4a from the upstream side is shown. It is effective to arrange in order of the TOC removal apparatus 4c and the ion exchange resin tower 4b.

By the hollow fiber membrane filter 4a, 99% or more of solid content is removed, and the TOC in the waste liquid by the TOC removal device 4c can be effectively removed or removed. In addition, the ion exchange resin tower 4b downstream can remove the ionic component in the waste liquid or the ionic component formed by decomposition of the TOC.

According to the radioactive waste liquid treatment equipment according to the present embodiment, the waste liquid treatment apparatus 4 including the hollow fiber membrane filter 4a, the ion exchange resin tower 4b, and the TOC removal apparatus 4c is used for filtration, ion exchange, The treatment such as TOC removal is performed, and the effective treatment of the waste liquid in which the upper drain is mixed with the low conductivity waste liquid is possible.

As the TOC removal device 4c, a type of oxidatively decomposing TOC in a high temperature, pressure, ultraviolet irradiation, high temperature incineration column, or a type of removing TOC by a reverse osmosis membrane can be suitably selected.

Next, the third embodiment of the radioactive waste liquid treatment equipment according to the present invention will be described with reference to FIG. In the third embodiment, the same parts as in FIG. 1 are denoted by the same reference numerals in FIG. 3, and descriptions of overlapping parts will be omitted.

The automatic water quality analyzer 11 is composed of at least one measuring unit 15 and at least one computer. The computer includes an input unit 17 for receiving a signal from the measuring unit 15, a diagnostic unit 16 for diagnosing and evaluating measured values, a storage unit 18 storing and storing these data, and a medium to long term And a processing unit 19 for performing system calculation, and an output unit 20 for displaying and outputting measurement data and diagnostic results or outputting necessary data stored so far to the diagnostic unit.

An outlet pipe 9 connected to the waste liquid treatment apparatus 4 is provided with a regular sample collecting device 13 and a continuous sample collecting device 14, and the samples collected from these are guided to the automatic water quality analyzing device 11a. Water quality is analyzed. The installation position of the periodic sample collection device 13 and the continuous sample collection device 14 may be upstream of the flow direction of the treated water.

In the radioactive waste liquid treatment facility shown in FIG. 3 having such a configuration, the samples collected from the periodic sample collection device 13 and the continuous sample collection device 14 installed in the outlet pipe 9 are stored in the automatic water quality analysis device 11a. After being temporarily stored in the measuring unit 15, it is measured periodically or continuously.

Here, the water quality analysis from the regular sample collection device 13 will be described.

The measurement frequency of the automatic water quality analyzer 11a in the case where the frequency of sampling from the periodic sample collection device 13 is set, for example, once a day is the volume of the sample stored in the measurement unit 15 for one time. If you do it once a day. The stored sample is completely replaced with the newly collected sample after the water quality analysis. This water quality analysis value is regarded as the representative value of the treated water quality until the next water quality analysis.

In addition, if the capacity stored in the measurement unit 15 is set to seven times of collection, the measurement frequency is once every seven days. The stored sample will be discarded the next time a new sample is taken, and after 7 days it will be filled up again for water quality analysis. With this water quality analysis value, it is regarded as the representative value of the treated water quality for one week until the next vertical analysis.

In the case where the storage capacity of the sample is taken seven times for sampling, the measurement frequency may be once a day. If the capacity replaced by the new sample is one seventh of the total, one seventh of the maximum retention time is always replaced by the new sample. This water quality analysis value is taken as the representative value of treated water quality for one week.

The sampling frequency of the sample may be set within a range in which a change in treated water quality can be grasped, and the water quality analysis method may be performed once every 10 seconds or once every several months depending on the target water quality analysis item. Can be applied.

Next, water quality analysis from the continuous sample collection device 14 will be described.

If the volume of the sample stored in the measurement unit 15 is V and the flow rate of the sample collected from the continuous sample collection device 14 is Q, the time H at which the sample is stored in the measurement unit 15 is H = V / Q.

The sample measured by the automatic water quality analyzer 11 is replaced in its entirety during the time H. If the measurement frequency is set to time H, water quality analysis is performed every time H. This water quality analysis value is regarded as a representative value of the treated water quality for the time H minutes until the next water quality analysis. The measurement frequency should be set within the time H, and the water quality analysis of the entire sample, including duplication, will be performed.

The sampling frequency of the sample may be set within a range in which the tendency of the treated water quality can be grasped, and the water quality analysis method described above may be performed once every 10 seconds or once every several months depending on the target water quality analysis item. You can apply it. In addition, when the measurement part 15 can measure continuously, the concept of the said measurement frequency is not necessary, and the water quality analysis of the whole sample collected can always be performed.

The water quality management items analyzed by the automatic water quality analyzer 11a for the samples collected from the periodic sample collector 13 are solid concentration concentration, silica concentration, chlorine concentration, COD, boron concentration, TOC, and the like. As the water quality control items analyzed by the automatic water quality analysis device 11a for the samples collected from 14), the conductivity, pH, and radioactivity concentration are generally used by the respective measurement principles.

However, since the combination is determined according to the water quality management item requiring reverse speed monitoring and the regular water quality monitoring item setting conditions and the selection of measurement instruments, some or all of the above items may be replaced.

The representative value of the water quality measured by the measurement unit 15 is sent to the diagnosis unit 16 which diagnoses and evaluates the measured value via the input unit 17 and the storage unit 18 that stores and stores these data. These data are calculated by the processing unit 19 for medium and long term calculation, the output unit 20 displays and outputs measurement data and diagnostic results, and outputs necessary data stored so far to the diagnostic unit.

Next, the fourth embodiment of the radioactive waste liquid treatment facility according to the present invention will be described with reference to FIG. In Fig. 4 of the fourth embodiment, the same parts as those in Fig. 1 are denoted by the same reference numerals, and the description of overlapping parts will be omitted.

The measuring unit 15 has a control valve 24 for adjusting flow rate and pressure conditions in addition to the measuring device according to the measuring conditions of each water quality management item. According to the measuring principle, a thermostat, a heater, a thermostat, a reagent supply container, a pump, a removal filter, an accessory instrument, an electrical appliance, etc., for adjusting the temperature condition are connected by piping and wiring.

In the measuring unit 15, 21a is a conductivity meter, 21b is a pH meter, 21c is a turbidity meter, 21d is a particulate counter, 21e is a silica, 21f is a TOC, 21g is a chlorine, 21h is a COD, and 22a is a NaI. The scintillation detector section 22b represents a continuous analysis type Ge semiconductor detector section, 23 represents a measuring instrument, and 24 represents a control valve.

The measurement result of the measurement part 15 is diagnosed and evaluated by the diagnostic part 16 based on a water quality reference value. The measurement data is stored and stored by the storage unit 18 and systematically processed by the processing unit 19.

In addition, based on the measurement results of the continuous measurement unit corresponding to some of the water quality management items, continuous evaluation of items that are not directly or indirectly measured from hydrochemical correlations and items that are regularly measured can be performed. Accordingly, all water quality management items can be diagnosed and evaluated by the diagnosis unit 16.

As a specific example, evaluation of the upper and lower sides to the water quality control standard value of the said dissolved component can be considered from the continuous measurement result of electrical conductivity, the static component measurement result, such as chlorine concentration, and the electrical conductivity contribution rate.

These measurement data are stored and stored by the storage unit 18 and systematically processed by the processing unit 19. If the diagnosis result is satisfactory, a permission signal for reuse of the treated water is sent to the wastewater flow channel switching device 8, and if the diagnosis result is bad, a transfer disallowed signal 12 is sent to the wastewater flow channel switching device 8. The automatic water quality analysis device 11a diagnoses abnormality in magnetic performance from the measured storage data, and also stores, records, and performs statistical processing of collected water quality data.

5 and 6, a fifth embodiment of the radioactive waste liquid treatment facility according to the present invention will be described. In the fifth embodiment, the same parts as in Fig. 1 are denoted by the same reference numerals in Fig. 5, and the description of overlapping parts will be omitted.

The fifth embodiment differs from the first embodiment in that the input unit 17, the storage unit 18, and the processing unit 19 are assembled as a computer of the automatic water quality analyzer 11b. That is, the automatic water quality analyzer 11b inputs the signal from the measurement unit 15 into the storage unit 18 and the processing unit 19, and inputs the signal from the processing unit 19 to the diagnosis unit 16. Moreover, the measuring instrument 23 is provided in the multiple storage container 5, and the signal of this measuring instrument 23 is input to the diagnostic part 16. FIG.

First, the example of the case where the judgment reference value C0 is C0≤A0 with respect to the water quality control reference value A0 as a diagnostic method of the diagnosis part 16 is demonstrated by FIG.

In this case, from the vertical relationship between the measured value K1 by the measuring unit 15 and the judgment reference value C0, if K1≤C0, a permission signal for reuse of the treated water is sent to the wastewater flow channel switching device 8, and if K1> C0, transfer is not allowed. The signal 12 is sent to the waste liquid flow channel switching device 8.

In addition, as a diagnostic method of the diagnostic part 16, the water quality value in the multiple storage container 5 may satisfy the judgment reference value C0 of C0 <= A0 with respect to the water quality management reference value A0. That is, when the water quality measurement value in the plural storage container 5 storing the plural volume V0 is P0, if the treated water of the volume V1 which is the measured value K1 by the measurement unit 15 is recovered to the plural storage container 5, the plural storage container The water quality value P1 in (5) is given by P1 = (P0V0 + K1V1) / (V0 + V1).

If P1? C0, the permission signal for reuse of the treated water is sent to the wastewater flow channel switching device 8 when P1? C0 from the upper and lower relations between the water quality value P1 and the judgment reference value C0. We send to (8).

In the continuous measurement, since the measured value K1 is constantly changing, it is necessary for the processing unit 19 to always calculate the water quality value P1 in accordance with the change of the measured value K1. At this time, V0 may be a plurality of capacities at the designated time, V1 may be a quantity of processing transferred every designated time, and K1 may be a representative value within the designated time.

In addition, although the water quality value in the multiple storage container 5 may be measured continuously, the method of correcting the measured value with the measured value by regular measurement is reasonable.

In addition, the predetermined rate of change in the rate of change of data from the individual water quality measurement units (data deviation per unit time) for the purpose of preliminary detection of signs of water degradation, post analysis of trends of water quality change, and failure detection of the measurement unit 15, etc. The diagnosis unit 16 can be given a function of comparing the width.

In order to form these functions, it is necessary to accumulate continuous data at the time of normality of the measurement part 15 as comparative data, and to store it in the memory | storage part 18 after carrying out systematic processing by the process part 19. As shown in FIG.

Next, the measuring method of radioactivity concentration is demonstrated by FIG.

FIG. 6 is only the regular sample collecting device 13 and the measuring instrument 23 of FIG. 5 removed, and the structure of FIG. 5 is hardly changed.

Conventionally, the radioactive concentration analysis of treated water recovered in the plurality of storage vessels 5 generally measures the concentration of gross γ radiation by a NaI scintillation detector in an analysis chamber. The radioactivity from the same sample was integrated for about 15 to 20 minutes, and 10-3 was the detection limit.

In the present invention, the NaI scintillation, which is one of the measurement units 15 in the automatic water quality analyzer 11, is sequentially irradiated with the radiation of a sample which is sequentially collected and updated from the continuous sample collection device 14 in order to achieve a detection limit equal to or less than conventionally. The detection value by the detector is stored in the storage unit 18, and the processing unit 19 accumulates for 15 to 20 minutes to calculate the average radioactivity concentration. By updating the time period to be accumulated as the processing time elapses, the diagnostic portion 16 can always diagnose the latest radiation concentration of 15 minutes to 20 minutes.

At the start of the waste liquid treatment, during the so-called initial circulation operation (15 minutes to 20 minutes) until the performance of the treatment apparatus is stabilized, the waste liquid flow channel switching device 8 selects the return pipe 6 side. Therefore, by measuring the radioactivity concentration from the start of the initial circulation, the radioactivity concentration of the treated water can be monitored to be equal to or less than the conventional detection limit without time delay from the start of the treatment operation after the initial circulation operation.

In addition to the NaI scintillation detector, a continuous analysis type Ge semiconductor detector may be used to measure the radioactivity concentration. In that case, the radiation integration time may be appropriately set in accordance with the detection limit.

According to the present invention, it is possible to automate and continuously process a series of operations from the processing of the waste liquid mixed with the low conductivity waste liquid to the recovery by temporarily self-diagnosis of the automatic water quality analyzer without temporarily storing the waste liquid. It can allow time for smooth operation of processing equipment and can reduce the amount of equipment.

Claims (5)

A waste liquid import container, a waste liquid processing device connected to the waste liquid import container, a flow path switching device connected to the waste liquid processing device, a plurality of storage containers connected to the downstream of the flow path switching device through a transfer pipe, and the waste A return pipe for returning to the import container, an automatic water quality analysis device branched from the pipe connecting the waste liquid treatment device and the flow path switching device, and a signal system for inputting a diagnostic signal from the automatic water quality analysis device to the flow path switching device. The waste liquid treatment apparatus is a radioactive waste liquid treatment facility, characterized in that the hollow fiber membrane filter and the ion exchange resin tower is connected directly. The radioactive wastewater treatment facility according to claim 1, wherein the wastewater treatment device is a combination of a hollow fiber membrane filter, an ion exchange resin tower, and a TOC removal device. The radioactive wastewater treatment facility according to claim 1, wherein the automatic water quality analysis device comprises one or both of an automatic water quality analysis device and an automatic water quality analysis device. The radioactive wastewater treatment facility according to claim 1, wherein the automatic water quality analysis device comprises at least one part selected from a measuring part, a memory part, a diagnostic part, a processing part, an input part and an output part. The measurement unit according to claim 1, wherein the diagnostic unit calculates a measurement signal value output from the measurement unit or a calculation value calculated by the processing unit, or a plurality of measurement signal values stored in the storage unit. A radioactive wastewater treatment facility, characterized in that it is configured to diagnose at least one of the calculated values calculated by the calculation.

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