JP2003147844A - Method and device for controlling drain sterilizer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and a device for controlling a drain sterilizer capable of predicting chemical loads, chemical consumption and a sterilizer startup time at a real time from rainfall information collected from measuring points fitted in a treatment district and measuring points fitted in the treatment district and an adjacent treatment district. SOLUTION: In the method for controlling the drain sterilizer sterilizing sewage in the treatment districts, sewage containing rainwater and drain containing rainwater or the like flowing down on a ground surface by chemicals, rainfall information is collected from the measuring points fitted in the treatment district X or the measuring points fitted in the treatment district X and the adjacent treatment districts A, B, C, D and E, a rainfall start time, the rainfall total amount and a rainfall duration time in the treatment district X are predicted from rainfall information, and the chemical loads 36a, the chemical consumption 36b and the drain sterilizer startup time 36c are predicted from the predicted rainfall start time, rainfall total amount and rainfall duration time and the drain sterilizer is controlled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage disinfection device control method and control device for disinfecting wastewater in a combined sewer system including sewage, sewage containing rainwater, rainwater flowing down on the ground surface, etc. with a chemical agent, and more particularly, a chemical addition amount. The present invention relates to a control method and a control device for a drainage disinfection device, which is suitable for predicting a chemical consumption amount and a disinfection device operation start time in real time.

[0002]

2. Description of the Related Art Conventionally, as a control method of this kind of drainage disinfection device, a measuring device provided in a treatment plant in which the drainage disinfection device is installed is used to measure the inflow amount of wastewater, the inflow pollution load, the rainfall amount, and the rainfall intensity. The number of coliform bacteria in the wastewater flowing into the wastewater disinfecting apparatus was estimated from the measured value, and the amount of the drug added was predicted and controlled.

FIG. 1 is a diagram showing a confluent sewer network for collecting wastewater to be disinfected by a conventional wastewater disinfection device and a treatment area. Drainage such as sewage generated in the treatment area X, sewage including rainwater, and rainwater flowing down on the surface of the ground flows into the sewage pipe 11 provided in the treatment area X. The wastewater that has flowed into each sewer pipe 11 merges, and the combined wastewater directly flows into the wastewater disinfection device provided in the treatment plant 10 or each relay pump P.
Water is sent to the drainage disinfection device by 1, P2 and P3.

However, the conventional methods for controlling a drainage disinfection device have the following problems (1) to (5) and cannot efficiently remove coliform bacteria contained in the wastewater.

Since the inflow amount and inflow pollution load of the wastewater, the rainfall amount, and the rainfall intensity are measured in the same treatment plant 10, the final total inflow amount of the wastewater and the inflow pollution load cannot be predicted, so that Unable to predict drug consumption.

Since the measurement points are fixed points in the treatment plant 10, it takes time to construct and verify the time series correlation of each measurement value and the correlation between the measurement values.

Due to the difference between the measurement points of rainfall information such as rainfall amount and rainfall intensity and the actual rainfall area, it is difficult to establish a correlation between the rainfall amount and the inflow amount of drainage and the water quality.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and in order to eliminate the above-mentioned drawbacks of the prior art, a measurement point provided in a treatment area or the treatment area and an adjacent treatment area. It is possible to provide a control method and a control device for a drainage disinfection device, which can predict the amount of chemicals added, the amount of chemicals consumed, and the disinfection device operation start time in real time from rainfall information collected from measurement points provided in To aim.

[0009]

In order to solve the above problems, the invention according to claim 1 disinfects wastewater containing sewage in the treatment area, sewage containing rainwater, rainwater flowing down on the ground surface, etc. by chemicals. In the control method of the disinfection device, rainfall information is collected from the measurement points provided in the treatment area or the measurement points provided in the treatment area and the adjacent treatment area, and from the rainfall information, the rainfall start time and the total amount of rainfall in the treatment area. And predicting the rainfall duration, and controlling the drainage disinfection device by predicting the amount of chemicals added, the amount of chemicals consumed, and the drainage disinfection device operation start time from the predicted rainfall start time, total rainfall amount, and rainfall continuation time. And

As described above, the method of controlling the drainage disinfection device is such that the start of rainfall in the treatment area is determined from the measurement points provided in the treatment area or the rainfall information collected from the measurement points provided in the treatment area and the adjacent treatment area. Since the time, the total amount of rainfall, and the duration of rainfall are predicted, the amount of chemicals added, the amount of chemicals consumed, and the drainage disinfection device operation start time can be predicted in real time.

The invention according to claim 2 is a controller for a drainage disinfecting apparatus for disinfecting wastewater containing sewage in the treatment area, sewage containing rainwater, and rainwater flowing down on the surface with a chemical agent in the treatment area or the treatment area. Rainfall information measuring means for measuring rainfall information in the area and adjacent treatment areas, and rainfall information prediction for predicting rainfall start time, total rainfall amount and duration of rainfall in the treatment area from the rainfall information measured by the rainfall information measuring means. A processing means and a coliform group number prediction processing means for predicting a chemical addition amount, a chemical consumption amount, and a drainage disinfection device operation start time from the rainfall start time, the total rainfall amount, and the rainfall duration predicted by the rainfall information prediction processing means. It is characterized by doing.

As described above, the controller of the drainage disinfection device is
Rainfall information measuring means for measuring rainfall information of the treatment area or the treatment area and the adjacent treatment area, and rainfall information prediction processing means and rainfall for predicting rainfall start time, total amount of rainfall and rainfall duration within the treatment area from the rainfall information. Equipped with a processing unit for predicting the number of coliform bacteria, which predicts the drug addition amount, drug consumption amount, and disinfection device operation start time from the start time, total rainfall amount, and rainfall duration, so the drug addition amount, drug consumption amount, and drainage disinfection device operation The start time can be predicted in real time.

According to a third aspect of the present invention, in the control device for the drainage disinfection device according to the second aspect, the inflow water amount and the inflow pollution of the wastewater flowing into the drainage disinfection device from the rainfall information measured by the rainfall information measuring means. A regional characteristic simulation means for predicting a load and a predicted value correction processing means for correcting the amount of chemicals added, the amount of chemicals consumed, and the drainage disinfection device operation start time based on the inflow water amount and the inflow pollution load predicted by the regional characteristic simulation means. It is characterized by doing.

Since the predictive value correction processing means for correcting the amount of chemicals added, the amount of chemicals consumed, and the operation start time of the disinfecting device based on the inflow water amount and the inflow pollution load predicted by the regional characteristic simulation means as described above is provided. It is possible to more accurately predict the amount of addition, the amount of chemicals consumed, and the operation start time of the drainage disinfection device.

The invention according to claim 4 is the invention according to claim 2 or 3.
In the control device of the wastewater disinfection device described in, the turbidity measurement means for measuring the inflow turbidity of the wastewater flowing into the wastewater disinfection device is provided, and the rainfall start time, the total rainfall amount, and the rainfall predicted by the rainfall information prediction processing means. It is characterized in that the amount of chemicals added, the amount of chemicals consumed, and the operation start time of the drainage disinfection device are predicted from the duration and the turbidity of the inflow water measured by the turbidity measuring means.

As described above, the amount of chemicals added, the amount of chemicals consumed, and the disinfection device are calculated from the rainfall start time, the total amount of rainfall and the duration of rainfall predicted by the rainfall information prediction processing means, and the inflow turbidity measured by the turbidity measuring means. Since the operation start time is predicted, the chemical addition amount, the chemical consumption amount, and the drainage disinfection device operation start time can be predicted more accurately.

According to a fifth aspect of the present invention, there is provided a drainage disinfecting apparatus control device for disinfecting wastewater containing sewage in a treatment area, sewage including rainwater, and rainwater flowing down on the surface with a chemical agent in the treatment area or the treatment area. Rainfall information measuring means for measuring rainfall information of the area and the adjacent treatment area, and area characteristic simulation means for predicting inflow water amount and inflow pollution load of drainage flowing into the drainage disinfection device from the rainfall information measured by the rain information measuring means And a chemical addition rate setting means for setting the chemical addition rate to the wastewater in advance, the inflow water amount predicted by the regional characteristic simulation means, the inflow pollution load and the chemical addition rate set by the chemical addition rate set by the chemical addition rate setting means It is characterized by comprising a drug addition amount calculation processing means for predicting the drug consumption amount.

As described above, rainfall information measuring means for measuring rainfall information in the treatment area or the treatment area and the adjacent treatment area, and the inflow water amount and inflow pollution load of the wastewater flowing into the drainage disinfection device are predicted from the rainfall information. Regional characteristic simulation means, chemical addition rate setting means for setting the chemical addition rate to wastewater in advance, and chemical addition quantity calculation processing means for predicting chemical addition quantity and chemical consumption from the inflow water quantity, inflow pollution load and chemical addition rate Since it is equipped with, it is possible to predict the drug addition amount and the drug consumption amount in real time with a simple configuration.

The invention according to claim 6 is the invention according to claims 2 to 5.
In the control device of the drainage disinfection device according to any one of 1,
Rainfall amount, rainfall intensity, inflow amount of wastewater flowing into the wastewater disinfection device, chemical supply amount of chemicals supplied to the wastewater disinfection device, discharge water discharged from the wastewater disinfection device in the treatment facility where the wastewater disinfection device is installed An actual measurement value measuring means for measuring the residual chemical concentration is provided, and an actual measurement value correction processing means for correcting the prediction of the chemical addition amount, the chemical consumption amount and the drainage disinfection device operation start time is provided by the measurement value measured by the actual measurement value measuring means. It is characterized by doing.

As described above, since the actual value correction processing means for correcting the prediction of the chemical addition amount, chemical consumption and disinfection device operation start time by the measurement value measured by the measurement value measuring means is provided, the chemical addition amount In addition, it is possible to more accurately predict the chemical consumption and the drainage disinfection device operation start time.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is a diagram showing a confluent sewer network for collecting wastewater to be disinfected by the wastewater disinfecting apparatus according to the present invention, a treatment area, and an adjacent treatment area. As shown in the figure, around the treatment area X of the treatment plant 10 where the drainage disinfection device is installed, treatment regions A and B having the same treatment plant,
C, D, and E are adjacent to each other. The basic structure of the combined sewer pipe network in this embodiment is the same as that of the combined sewer pipe network shown in FIG. A halogen-based chemical is used as the chemical of this wastewater disinfection device.

[First Embodiment] FIG. 3 is a diagram showing a configuration example of a control device of a drainage disinfection device according to the present invention. As shown in the figure, a plurality of rainfall information measuring means 20, 20, ... Are provided in the processing area A, and the rainfall information measuring means 20,
The rainfall information 21a, 22a ... In the processing area A can be measured at 20 ... Although not shown, each rainfall information measuring means 20 is provided in a facility having a relay pump in a treatment area A, a drainage station, a treatment plant, and a measuring facility. With respect to the other treatment areas B, C, D, E and X, the rainfall information such as the rainfall amount and the rainfall intensity of each treatment area is measured by the same rainfall information measuring means. Each processing area A,
The rainfall information measured by B, C, D, E, and X is continuously or periodically transmitted to the control device 30 by using a data transmission device using a commercially available telephone line, an Amedus system, or the like. It has become.

FIG. 4 is a diagram showing a mapping process used in the control method of the waste water disinfection device according to the present invention. FIG. 4 (a) is measured in each treatment area A, B, C, D, E, X. FIG. 2B is a schematic diagram obtained by mapping the rainfall information shown in FIG.
FIG. 4A is a schematic diagram after a lapse of time t in FIG. Processing areas A, B, C, D, E, X input to the control device 30
The rainfall information from is subjected to mapping processing by the rainfall information mapping processing means 31 into a schematic diagram as shown in FIG. Since the rainfall information measured in each processing area A, B, C, D, E, X is transmitted to the control device 30 continuously or periodically, the schematic diagram shown in FIG. Later, it becomes a schematic diagram as shown in FIG. The mapping-processed rainfall information is represented by the intensity of rainfall as indicated by A.

Next, from the time-series transition of the rainfall information transmitted continuously or periodically and subjected to the mapping processing (see FIG. 4), the rainfall information estimation processing means 32 causes the rainfall start time, the total rainfall amount and the rainfall in the processing area X. Predict duration. Further, the rainfall information estimation processing means 32 uses the predicted rainfall start time, total rainfall amount, and rainfall duration time to predict the amount of rainfall 33, the expected rainfall intensity 34, and the drainage that flows into the drainage disinfection device at the treatment plant 10 in the treatment area X. Expected inflow of 35
Ask for. The predicted rainfall amount 33, predicted rainfall intensity 34 and predicted inflow amount 35 thus obtained are input to a known coliform group number estimation processing means 36. In addition, the inflow water turbidity 51 of the wastewater flowing into the wastewater disinfection device measured by the turbidity measuring means 50 installed in the treatment plant 10 is input to the coliform bacteria count estimating means 36.

The Escherichia coli group number estimation processing means 36 estimates the number of Escherichia coli groups from the input predicted rainfall amount 33, predicted rainfall intensity 34, predicted inflow amount 35 and inflow water turbidity 51,
Necessary amount of medicine added 36a, consumption of medicine 36
b and the drainage disinfection device operation start time 36c are predicted.

Next, the amount of rainfall 5 at the treatment plant 10 is measured by the measured value measuring means 52 provided at the treatment plant 10 in the treatment area X.
3, rainfall intensity 54, inflow amount 55 of wastewater flowing into the wastewater disinfection device, chemical supply amount 56 of halogen-based chemicals supplied to the wastewater disinfection device, discharge water residual drug concentration 57 of wastewater discharged from the wastewater disinfection device To measure. The measured rainfall amount 53, rainfall intensity 54, inflow water amount 55, chemical supply amount 5
6. The residual chemical concentration 57 of the discharged water is input to the predicted value / actually measured value correction processing means 37.

The predicted value / actually measured value correction processing means 37 is adapted to input the rainfall amount 53, the rainfall intensity 54, and the inflow water amount 5 described above.
5. From the chemical supply amount 56 and the discharged water residual chemical concentration 57, the correction value for correcting each predicted value of the chemical addition amount 36a, the chemical consumption amount 36b, and the drainage disinfection device operation start time 36c is obtained. The calculated correction values are added to the correction value addition processing means 37a, 3a.
7b and 37c, the chemical addition amount 36a, the chemical consumption amount 36b, and the drainage disinfection device operation start time 36c are added to obtain the chemical addition amount 41, the chemical consumption amount 42, and the drainage disinfection device operation start time 43.

The control device 30 controls the addition amount 41 and the consumption amount 42 of the medicine, which are obtained by adding the correction values.
And each predicted value of the drainage disinfection device operation start time 43,
Operates the drainage disinfection device, controls the amount of chemicals added, and controls the amount of chemicals consumed. The chemical addition amount 41 is used for real-time control of chemical addition as an actual chemical addition amount set value of the drainage disinfection device. Further, the chemical consumption 42 is compared with the stock of chemicals stored in the treatment plant 10, and when the chemicals to be added to the drainage disinfecting device are insufficient, an alarm or the like is issued to notify the operator of the chemicals. It is used for the purpose of requesting supplementation. Further, the drainage disinfection device operation start time 43 is used as a command to notify the operator of the drainage disinfection device operation start time and used as an automatic operation start command of the drainage disinfection device.

As described above, each processing area A, B, C,
Based on the rainfall information measured by the rainfall information measuring means 20 in D, E, and X, the rainfall information estimation processing means 32 predicts the rainfall start time, the total rainfall amount, and the rainfall duration time in the processing area X. The expected rainfall amount 33, the expected rainfall intensity 34, and the expected inflow amount 35 at the treatment plant 10 in the treatment area X are obtained, and the coliform bacteria group number estimation processing means 36 determines the coliform bacteria from the expected rainfall amount 33, the expected rainfall intensity 34, and the expected inflow amount 35. Each predicted value can be predicted in real time by estimating the number of groups and predicting the chemical addition amount 36a, the chemical consumption amount 36b, and the drainage disinfection device operation start time 36c required for controlling the wastewater disinfection device for the group. .

The Escherichia coli group number estimation processing means 36 uses the expected rainfall amount 33, the expected rainfall intensity 34, the expected inflow amount 35, and the inflow turbidity 51 to determine the drug addition amount 36a and the drug consumption amount 36b.
Since the disinfection device operation start time 36c is predicted, the prediction values can be predicted more accurately.

Further, the predicted value / actual value correction processing means 37 obtains a correction value from the rainfall amount 53, the rainfall intensity 54, the inflow water amount 55, the drug supply amount 56, and the discharged water residual drug concentration 57, and the correction value addition processing means 37a, In 37b and 37c, the respective correction values are added to the medicine addition amount 36a, the medicine consumption amount 36b and the disinfection device operation start time 36c to obtain the medicine addition amount 41, the medicine consumption amount 42 and the disinfection device operation start time 43.
The prediction of each predicted value can be performed more accurately.

Second Embodiment FIG. 5 is a diagram showing another example of the configuration of the control device for the drainage disinfection device according to the present invention. Since the basic configuration of the control device of the drainage disinfection device is substantially the same as the control device of the drainage disinfection device shown in FIG. 3, the description thereof will be omitted. The control device of this drainage disinfection device differs from the control device of the drainage disinfection device shown in FIG. 3 in that it is equipped with a regional characteristic simulation means 60.

Rainfall information 21x such as rainfall amount and rainfall intensity measured by each rainfall information measuring means 20 in the processing area X,
22x ... Are input to the rainfall information mapping processing means 31 of the control device 30 and also to the regional characteristic simulation means 60. The regional characteristic simulation means 60 is a commercially available regional characteristic simulation software, and inputs topographical information of a pre-registered treatment area, a rainwater collection route, a sewer pipeline network, a sewage discharge population, and a sewage discharge type as initial setting conditions. , And the above rainfall information 21
By inputting x, 22x ..., hydraulic / water quality analysis is performed.

The regional characteristic simulation means 60
Calculates the expected inflow water amount 61 and the expected inflow pollution load 62 of the wastewater flowing into the wastewater disinfection device from the rainfall information in the treatment area X. The calculated expected inflow water amount 61 and expected inflow pollution load 62 are the rainfall amount 53, the rainfall intensity 54, the inflow water amount 55, and the chemical supply amount 5 measured by the actual measurement value measuring means 52.
6. The residual drug concentration 57 in the discharged water is input to the predicted value / actually measured value correction processing means 37.

The predicted value / actual value correction processing means 37 inputs the rainfall amount 53, the rainfall intensity 54, the inflow water amount 55, the chemical supply amount 56, the residual chemical concentration 57 of the discharged water, and the expected inflow amount 6
From 1 and the expected inflow pollution load 62, a correction value for correcting the chemical addition amount 36a, the chemical consumption amount 36b, and the drainage disinfection device operation start time 36c is obtained. The correction values are added to correction value addition processing means 37a, 37b, and 37c to the respective predicted values of the chemical addition amount 36a, the chemical consumption amount 36b, and the drainage disinfection device operation start time 36c from the coliform bacteria count estimation processing means 36. Then, the respective predicted values of the chemical addition amount 41, the chemical consumption amount 42, and the drainage disinfection device operation start time 43 are obtained. The control device 30 controls the operation of the drainage disinfection device, the amount of added chemicals, and the amount of consumed chemicals based on the predicted values.

As described above, the predicted value / actual value correction processing means 37 calculates the amount of chemical addition 36a, the amount of chemical consumption 36b, and the operation of the drainage disinfection device from the expected inflow water amount 61 and the expected inflow pollution load 62 determined by the regional characteristic simulation means 60. A correction value for correcting the start time 36c is obtained, and the correction value addition processing means 37a, 37b, and 37c add the correction values to the drug addition amount 36a and the drug consumption amount 36 from the coliform group number estimating means 36.
By adding processing to b and the disinfection device operation start time 36c, the drug addition amount 41, the drug consumption amount 42, and the disinfection device operation start time 43 are obtained, so that each predicted value can be predicted more accurately.

In the above embodiment, the rainfall information 21 measured by the rainfall information measuring means 20 in the processing area X is used.
x, 22x ... Only the regional characteristic simulation means 60
However, the present invention is not limited to this, and the processing area X and the adjacent processing area A,
You may input each rainfall information of B, C, D, and E.

[Third Embodiment] FIG. 6 is a diagram showing another example of the configuration of the control device for the drainage disinfection device according to the present invention. First, rainfall information 21x, 22x such as rainfall amount and rainfall intensity measured by each rainfall information measuring means 20 in the processing area X.
Is input to the regional characteristic simulation means 60.

The regional characteristic simulation means 60
Calculates the expected inflow water amount 61 and the expected inflow pollution load 62 of the wastewater flowing into the wastewater disinfection device from the rainfall information in the treatment area X. The estimated inflow water amount 61 and the estimated inflow pollution load 62 thus obtained are input to the medicine addition amount calculation processing means 38.

Further, the drug addition amount calculation processing means 38 is
The chemical addition rate 39a set in advance by the chemical addition rate setting means 39 for setting the chemical addition rate to the waste water flowing into the waste water disinfection device is input. The drug addition amount calculation processing means 38 predicts the drug addition amount 36a and the drug consumption amount 36b from the input drug addition rate 39a, the expected inflow water amount 61 and the expected inflow pollution load 62.

From the measured value measuring means 52 provided in the treatment plant 10 in the treatment area X, the rainfall amount 53 in the treatment plant 10,
The rainfall intensity 54, inflow water amount 55, drug supply amount 56, and discharge water residual drug concentration 57 are measured. The measured rainfall 5
3, the rainfall intensity 54, the inflow water amount 55, the medicine supply amount 56, and the discharged water residual medicine concentration 57 are input to the predicted value / actually measured value correction processing means 37 of the control device 30.

The predicted value / actual value correction processing means 37 receives the rainfall amount 53 to which the correction values for correcting the predicted values of the medicine addition amount 36a and the medicine consumption amount 36b from the medicine addition amount calculation processing means 38 are inputted. , Rainfall intensity 54, inflow water amount 55, drug supply amount 56, and discharge water residual drug concentration 57. The respective correction values are added to the respective predicted values of the medicine addition amount 36a and the medicine consumption amount 36b from the medicine addition amount calculation processing means 38 in the correction value addition processing means 37a and 37b, and the medicine addition amount 41 and the medicine consumption amount are calculated. 42 is asked. The control device 30 controls the drainage disinfection device based on the drug addition amount 41 and the drug consumption amount 42.

As described above, the estimated inflow water amount 61 and the estimated inflow pollution load 62 are obtained by the regional characteristic simulation means 60 from the rainfall information 21x, 22x ... Measured by each rainfall information measurement means 20 in the treatment area X, and The addition amount calculation means 38 uses the expected inflow water amount 61 and the expected inflow pollution load 6
Since the drug addition amount 41 and the drug consumption amount 42 are predicted from the 2 and the drug addition ratio 39a set by the drug addition ratio setting means 39, each predicted value can be predicted in real time.

In the above embodiment, the rainfall information 21 measured by each rainfall information measuring means 20 in the processing area X is shown.
x, 22x ... Only the regional characteristic simulation means 60
However, the present invention is not limited to this, and the processing area X and the adjacent processing area A,
You may input each rainfall information of B, C, D, and E.

Further, in the present embodiment, the halogen type chemical is used as the chemical for disinfecting waste water, but the present invention is not limited to this, and other chemicals for disinfecting waste water may be used.

[0046]

As described above, according to the invention described in each claim, the following excellent effects can be obtained.

According to the invention described in claim 1, the start of rainfall in the treatment area is determined from the measurement points provided in the treatment area or the rainfall information collected from the measurement points provided in the treatment area and the adjacent treatment area. Since the time, the total amount of rainfall, and the duration of rainfall are predicted, the amount of chemicals added, the amount of chemicals consumed, and the drainage disinfection device operation start time can be predicted in real time.

According to the second aspect of the present invention, the rainfall start time, the total amount of rainfall in the treatment area, and the rainfall information measuring means for measuring the rainfall information of the treatment area or the treatment area and the adjacent treatment area and the rainfall information. It is equipped with rainfall information prediction processing means for predicting rainfall duration and means for predicting the number of coliform bacteria that predicts the amount of chemicals added, the amount of chemicals consumed, and the operation start time of disinfection equipment from the rainfall start time, total rainfall and rainfall duration. Therefore, the amount of chemicals added, the amount of chemicals consumed, and the operation start time of the drainage disinfection device can be predicted in real time.

According to the third aspect of the present invention, the predicted value correction processing for correcting the amount of chemicals added, the amount of chemicals consumed, and the operation start time of the disinfecting apparatus based on the inflow water amount and the inflow pollution load predicted by the regional characteristic simulation means. Since the means is provided, it is possible to more accurately predict the amount of added chemicals, the amount of consumed chemicals, and the operation start time of the drainage disinfection device.

According to the fourth aspect of the present invention, the amount of chemical addition is calculated from the rainfall start time, the total rainfall amount and the rainfall duration predicted by the rainfall information prediction processing means, and the inflow turbidity measured by the turbidity measuring means. Since the chemical consumption amount and the disinfection device operation start time are predicted, the drug addition amount, the drug consumption amount, and the drainage disinfection device operation start time can be more accurately predicted.

According to the invention described in claim 5, rainfall information measuring means for measuring rainfall information of the treatment area or the treatment area and the adjacent treatment area, and the inflow amount of the waste water flowing into the drainage disinfection device from the rainfall information. And regional characteristic simulation means for predicting inflow pollution load, chemical addition rate setting means for setting the chemical addition rate to wastewater in advance, and prediction of chemical addition amount and chemical consumption amount from inflow water amount, inflow pollution load and chemical addition rate Since it is provided with the drug addition amount calculation processing means, the drug addition amount and the drug consumption amount can be predicted in real time with a simple configuration.

According to the sixth aspect of the present invention, there is provided actual measurement value correction processing means for correcting the chemical addition amount, the chemical consumption amount, and the disinfection device operation start time based on the measurement values measured by the measurement value measurement means. Therefore, it is possible to more accurately predict the amount of added chemicals, the amount of chemicals consumed, and the operation start time of the drainage disinfection device.

[Brief description of drawings]

FIG. 1 is a diagram showing a confluent sewer network for collecting wastewater disinfected by a conventional wastewater disinfection device and a treatment area.

FIG. 2 is a diagram showing a confluent sewer network for collecting wastewater to be disinfected by the wastewater disinfecting apparatus according to the present invention, a treatment area, and an adjacent treatment area.

FIG. 3 is a diagram showing a configuration example of a control device of a drainage disinfection device according to the present invention.

FIG. 4 is a diagram showing a mapping process used in the control method of the wastewater disinfection device according to the present invention, in which FIG. 4 (a) shows rainfall information measured in each treatment area A, B, C, D, E, X. 3B is a schematic diagram obtained by performing the mapping process of FIG. 6B, and FIG. 6B is a schematic diagram after the time t in FIG.

FIG. 5 is a diagram showing another configuration example of the control device of the drainage disinfection device according to the present invention.

FIG. 6 is a diagram showing another configuration example of the control device of the drainage disinfection device according to the present invention.

[Explanation of symbols]

10 treatment plant 11 sewer pipe 21a Rainfall information for treatment area A 21x Processing Area X Rainfall Information 22a Rainfall information for treatment area A 22x Rainfall information for treatment area X 30 control device 31 Rainfall Information Mapping Processing Means 32 rainfall information estimation processing means 33 expected rainfall 34 Expected rainfall intensity 35 Expected inflow 36 E. coli group number estimation processing means 36a Drug addition amount 36b Drug consumption 36c Wastewater disinfection device operation start time 37 Measured Value Correction Processing Means 37a Correction value addition processing means 37b Correction value addition processing means 37c Correction value addition processing means 38 Medication Addition Calculation Processing Means 39 Medication addition rate setting means 39a Drug addition rate 41 amount of drug added 42 Drug consumption 43 Operation start time of drainage disinfection device 50 Turbidity measuring means 51 Inflow water turbidity 52 Predicted value / measured value measuring means 53 rainfall 54 Rain intensity 55 Inflow 56 Drug supply 57 Concentration of residual drug in discharged water 60 Regional characteristic simulation means 61 Expected inflow 62 Expected inflow pollution load

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G01W 1/10 G01W 1/10 P (72) Inventor development Keizen 11-11 Haneda-Asahi-cho, Ota-ku, Tokyo Issue F-term in EBARA CORPORATION (reference) 2D063 AA07 AA09 DC04

Claims (6)

[Claims] 1. A method for controlling a drainage disinfecting apparatus for disinfecting wastewater containing sewage in a treatment area, sewage containing rainwater, rainwater flowing down on the ground surface, etc. with a chemical agent, or a measurement point provided in the treatment area or the treatment point. The rainfall information is collected from the measurement points provided in the area and the adjacent treatment area, and the rainfall start time in the treatment area, the total amount of rainfall and the rainfall duration are predicted from the rainfall information, and the predicted rainfall start time, A method for controlling a drainage disinfection device, comprising controlling a drainage disinfection device by predicting a chemical addition amount, a chemical consumption amount, and a drainage disinfection device operation start time from a total rainfall amount and a rainfall duration time. 2. A control device of a drainage disinfection device for disinfecting sewage in a treatment area, sewage including rainwater, and drainage including rainwater flowing down on the surface with a chemical, the treatment area or the treatment area and an adjacent treatment area. Rainfall information measuring means for measuring the rainfall information of, rainfall start time in the processing area from the rainfall information measured by the rainfall information measuring means, rainfall information prediction processing means for predicting the total amount of rainfall and rainfall duration, It comprises a coliform group number prediction processing means for predicting a chemical addition amount, a chemical consumption amount, and a drainage disinfection device operation start time from the rainfall start time, the total rainfall amount, and the rainfall duration predicted by the rainfall information prediction processing means. A control device for the drainage disinfection device. 3. The control device for the drainage disinfection device according to claim 2, wherein the inflow water amount and the inflow pollution load of the drainage flowing into the drainage disinfection device are predicted from the rainfall information measured by the rainfall information measuring means. Characteristic simulation means and predictive value correction processing means for correcting the amount of chemicals added, the amount of chemicals consumed, and the drainage disinfection device operation start time based on the inflow water amount and the inflow pollution load predicted by the regional characteristic simulation means Control device for drainage disinfection device. 4. The control device for the drainage disinfection device according to claim 2 or 3, further comprising turbidity measuring means for measuring the inflow turbidity of the wastewater flowing into the drainage disinfection device, and the rainfall information prediction processing means. It is characterized in that the amount of chemicals added, the amount of chemicals consumed, and the operation start time of the drainage disinfection device are predicted from the rainfall start time, the total amount of rainfall, the rainfall duration, and the inflow turbidity measured by the turbidity measuring means. Control device for drainage disinfection device. 5. A controller of a drainage disinfecting apparatus for disinfecting wastewater containing sewage in a treatment area, sewage including rainwater, and rainwater flowing down on the surface with a chemical, the treatment area or the treatment area and an adjacent treatment area. Rainfall information measuring means for measuring the rainfall information of, the regional characteristic simulation means for predicting the inflow water amount and inflow pollution load of the drainage flowing into the drainage disinfection device from the rainfall information measured by the rainfall information measuring means, A chemical addition rate setting means for setting the chemical addition rate to the wastewater, an inflow water amount predicted by the regional characteristic simulation means, an inflow pollution load, and a chemical addition rate and a chemical based on the chemical addition rate set by the chemical addition rate setting means. A control device for a drainage disinfection device, comprising a chemical addition amount calculation processing means for predicting consumption amount. 6. The controller of the drainage disinfection device according to claim 2, wherein the amount of rainfall, the rainfall intensity, and the amount of wastewater flowing into the drainage disinfection device in a treatment facility in which the drainage disinfection device is installed. Inflow water amount, chemical supply amount of chemicals supplied to the drainage disinfection device, actual measurement value measuring means for measuring the concentration of residual chemicals in the discharged water discharged from the wastewater disinfection device, and from the results measured by the actual measurement value measurement means A control device for a drainage disinfection device, comprising a measured value correction processing unit that corrects predictions of the amount of chemicals added, the amount of chemicals consumed, and the operation start time of the drainage disinfection device.