JP2005248558A - Control method and control system of sewage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an control method and an control system of a sewage capable of quickly corresponding to the increase of an amount of sewage without increasing sewage treatment capacity of the existing sewage treatment plant. <P>SOLUTION: Two sewage partitions 10A and 10B for sewage treatment adjacent to each other are respectively provided with sewage treatment plants 12A and 12B, and a by-pass line 20 capable of conveying sewage in two directions is provided between a main line 18 of a pipe network 14A and a main line 18 of a pipe network 14B adjacent to each other and, at the same time, an opening and closing valve 22 for opening and closing the by-pass line 20 is provided to the by-pass line 20. Water level measuring instruments 30 for sewage are provided to a plurality of sites of the main lines 18 of the pipe networks 14A and 14B, and these water level measuring instruments 30 are connected to a server 200 so that they can communicate with each other. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a sewerage management method and management system.

The sewer system is provided with a sewage treatment plant provided for each sewage section that treats sewage and a pipeline network that is provided for each sewage section and carries sewage to the sewage treatment plant. (For example, see Patent Document 1).
JP-A-6-88373

Therefore, for example, if a heavy rain falls only in a certain sewage section, or if a heavy rain falls on a slope such as a mountain adjacent to a certain sewage section, the sewage treatment capacity of those sewage sections will be exceeded. Since a large amount of sewage is expected to be transported, the sewage treatment plant will temporarily block the sewage inflow channel and wait until the sewage treatment plant can start the sewage treatment again, or the sewage will be discharged into the sewage treatment plant. The method is taken directly to the river or the sea without going through.
In the former method, there is a risk that sewage will overflow from the manhole of the pipeline network while the sewage treatment plant is standing by blocking the inflow channel, and in the latter method, untreated sewage is There is a disadvantage of being discharged into rivers and the sea.
In order to eliminate such inconveniences, it is necessary to add facilities to increase the sewage treatment capacity of the existing sewage treatment plant, or to construct another sewage treatment plant in addition to the existing sewage treatment plant. However, in any case, enormous costs and time are required for securing land and building construction.

In addition, if the sewage treatment plant has an increased sewage treatment capacity or a new sewage treatment plant is constructed, the facilities and the sewage treatment plant are wasted unless heavy rain occurs.
The present invention has been devised in view of the above circumstances, and the object of the present invention is to increase the amount of sewage without increasing the sewage treatment capacity of an existing sewage treatment plant and without providing a new sewage treatment plant. The object is to provide a sewerage management method and management system that can quickly respond to the increase in the amount of water.

In order to achieve the above object, the sewerage management method of the present invention includes a sewage treatment plant provided for each sewage section for treating sewage, and the sewage treatment from a terminal use facility provided for each sewage section such as a home or a factory. A sewerage management method comprising a pipeline network for transporting sewage to a site, and providing a bypass path for connecting adjacent pipeline networks among the pipeline networks of adjacent sewage sections, and opening and closing the bypass path An on-off valve that measures the sewage water levels at a plurality of locations in the pipeline network of one of the sewage compartments adjacent to each other, generates first water level data at each of the plurality of locations, and And measuring the sewage water levels at a plurality of locations in the pipeline network of the other sewage basin, generating second water level data at each of the plurality of sewage basins, and generating the plurality of first water level data. Characterized in that it controls the opening and closing of the said opening and closing valve on the basis of data and a plurality of second level data.
Further, the sewerage management system of the present invention includes a sewage treatment plant provided for each sewage section for treating sewage, and a sewage treatment plant provided for each sewage section to an end use facility such as a home or a factory. A sewerage management system comprising a carrying network, a bypass channel connecting adjacent pipeline networks among the pipeline networks of sewage sections adjacent to each other, an on-off valve for opening and closing the bypass channel, A plurality of first water level measuring means for measuring water levels at a plurality of locations in a pipeline network of one of the adjacent sewage sections and generating water level data; and among the adjacent sewage sections A plurality of second water level measuring means for measuring the water level of the sewage at a plurality of locations in the pipeline network of the other sewage section, and generating water level data, respectively, the first water level measuring means and the second water level measurement. And a controlling means for controlling opening and closing the on-off valve on the basis of a plurality of water level data generated by stages.

  According to the sewerage management method and management system of the present invention, the amount of sewage from the pipe network on the sewage section side where the sewage amount is predicted to temporarily exceed the sewage treatment capacity of the sewage treatment plant, Sewage can be transported via a bypass to a pipeline network in a sewage compartment that is not expected to exceed its capacity. Therefore, the sewage treatment capacity of the existing sewage treatment plant can be effectively utilized, and the amount of sewage can be increased without increasing the sewage treatment capacity of the existing sewage treatment plant and without establishing a new sewage treatment plant. It is possible to respond quickly.

  The purpose of quickly responding to the increase in the amount of sewage without increasing the sewage treatment capacity of existing sewage treatment plants and without establishing a new sewage treatment plant is to This was realized by providing a bypass path for connecting adjacent pipe networks and an opening / closing valve for opening / closing the bypass path, and opening / closing the opening / closing valve based on water level data at a plurality of locations in each sewage section.

Next, a management method together with the sewage management system of Embodiment 1 of the present invention will be described with reference to the drawings.
FIG. 1 is a conceptual diagram showing the overall configuration of a sewer management system of the present invention, FIG. 2 is a block diagram showing the configuration of a communication control system for collecting sewage water level data, and FIG. 3 explains a sewer management method. It is a flowchart.

As shown in FIG. 1, the management system of a present Example has two sewage divisions 10A and 10B which adjoin each other which processes sewage.
A single sewage treatment plant 12A, 12B is provided for each of these sewage compartments 10A, 10B. One sewage treatment plant 10A has a pipeline network 14A for carrying sewage to the sewage treatment plant 12A, and the other sewage treatment plant 10B. Are each provided with a pipeline network 14B for carrying sewage to the sewage treatment plant 12B. Hereinafter, for convenience of explanation, the sewage treatment plant and the pipeline network will be described as a first sewage treatment plant 12A, a second sewage treatment plant 12B, a first pipeline network 14A, and a second pipeline network 14B. .
The first and second pipeline networks 14A and 14B include a branch pipe 16 that carries sewage from a terminal use facility such as a home or a factory, and a trunk line 18 to which downstream ends of the plurality of branch pipes 16 are connected. And the downstream end of the main line 18 is connected to the first and second sewage treatment plants 12A and 12B.
More specifically, for example, a plurality of trunk lines 18 to which a plurality of branch pipes 16 are connected are provided, and the plurality of trunk lines 18 are connected to one trunk line 18 provided on the downstream side of these trunk lines 18. A plurality of trunk lines 18 provided in the same manner as this one trunk line 18 are connected to one trunk line 18 provided further downstream than these trunk lines 18, and the trunk line located on the most downstream side 18 is connected to each sewage treatment plant 12A, 12B.
A bypass path 20 capable of carrying sewage bidirectionally is provided between the trunk line 18 of the first pipeline network 14A adjacent to each other and the trunk line 18 of the second pipeline network 14B. The bypass passage 20 is provided with an opening / closing valve 22 for opening and closing the bypass passage 20. The on-off valve 22 is configured to control the amount of sewage flowing through the bypass 20 by controlling the opening degree. As the on-off valve 22, for example, an electric on-off valve (electric valve) or a hydraulic on-off valve can be used.
Further, a plurality of water level measuring devices 30 for measuring sewage water level data are provided at a plurality of locations on the main line 18 of the first and second pipeline networks 14A and 14B. The plurality of water level measuring devices 30 communicate with the server 200. Connected as possible.
In the present embodiment, the positions on the first and second pipeline networks 14A and 14B where the plurality of water level measuring devices 30 are provided are the first and second pipelines to which the bypass channel 20 is connected. It is a position on the upstream side of the position on the nets 14A and 14B. In this embodiment, the water level measuring device 30 installed in the first pipeline network 14A constitutes the first water level measuring means in the claims, and the water level installed in the second pipeline network 14B. The measuring device 30 constitutes the second water level measuring means in the claims.
The server 200 is configured to control the on-off valve 22 based on a plurality of water level data collected from each water level measuring device 30.

Next, the configuration of the water level measuring device 30 and the server 200 will be described in detail.
As shown in FIG. 2, the main line 18 is provided with a plurality of manholes 24 at intervals in the extending direction, and a water level measuring device 30 is provided in some of the manholes 24. is set up.
The water level measuring device 30 includes a water level sensor 3002, a control unit 3004, a communication unit 3006, an antenna 3008, a battery 3010, and the like, and a case (not shown) that houses the water level sensor 3002, the control unit 3004, the communication unit 3006, and the battery 3010. Is attached to the upper end edge facing the opening of the manhole 24 via a mounting bracket (not shown), and the case is covered from the outside by closing the opening of the manhole 24 with the lid 26, and the lid 26 is removed from the opening. The above is configured to face outward.
The water level sensor 3002 measures the water level of the sewage S flowing through the main line 18. For example, the water level sensor radiates a microwave to the water surface of the sewage 18 and receives a reflected wave of the microwave reflected by the water surface. It is configured to measure the distance between 3002 and the water surface. As such a water level sensor 3002, various non-contact type sensors capable of measuring the distance using ultrasonic waves or infrared light can be adopted in addition to those using the microwave.
In addition to controlling the water level sensor 3002 and the communication unit 3006, the control unit 3004 generates water level data representing the water level of the sewage S based on the distance measured by the water level sensor 3002.
The antenna 3008 is incorporated in the lid 26 so that the location of the antenna 3008 faces the outside of the lid 26, is connected to the communication unit 3006, and is configured to be capable of wireless communication with the wireless communication network 40.
The communication unit 3006 has a function equivalent to that of a mobile phone and is configured to be capable of bidirectional communication with the server 200 via the antenna 3008, the wireless communication network 40, and the digital communication network 42.
The battery 3010 supplies power for operation to the water level sensor 3002, the control unit 3004, and the communication unit 3006.
In the present embodiment, the control unit 3004 controls the communication unit 3006 to transmit the water level data to the server 200, and based on a control command transmitted from the server 200 and received by the communication unit 3006. And it is comprised so that the communication part 3006 may be controlled. The communication unit 3006 adds identification data for identifying each water level measuring device 30 to the water level data and transmits the data to the server 200. The server 200 identifies the water level data based on the identification data. ing.
Further, the generation of the water level data and the transmission to the server 200 are configured to be performed at a predetermined cycle T by the control unit 3004, and the predetermined cycle T is set by a control command transmitted from the server 200. It has become.
In this embodiment, the water level data transmitted from the communication unit 3006 to the server 200 or the control command (command data) transmitted from the server 200 to the communication unit 3006 is expressed in a text format (HTML format). Each data communication is performed by packet communication, for example.

The server 200 includes a communication unit 202, a control unit 204, a database 206, a display device 208, a printer 210, an input device 212, a remote control unit 214, and the like.
The communication unit 202 is configured to be capable of bidirectional communication with the communication unit 3006 of the water level measuring device 30 via the digital communication line network 42 and the wireless communication line network 40.
The control unit 204 controls the communication unit 202, the database 206, the display device 208, the printer 210, the input device 212, and the remote control unit 214.
The database 206 stores water level data collected from each water level measuring device 30 via the wireless communication network 40 and the digital communication network 42. Specifically, water level data collected with the passage of time for each water level measuring device 30 is stored.
The display device 208 includes a CRT, a liquid crystal display, and the like, and is configured to display and output water level data collected by the communication unit 202 or water level data read from the database 206 by the control unit 204. The water level data to be displayed and output is processed by the control unit 204 into various formats such as a table format or a graph format. Further, the temporal change of the water level data, the positions on the first and second pipeline networks 14A and 14B where the water level measuring devices 30 are provided, and the like are also displayed and output.
The printer 210 is configured to print out the water level data collected by the communication unit 202 or the water level data read from the database 206 by the control unit 204, and the format of the water level data to be printed out is the display device 208. This is the same as the format of the water level data displayed and output by.
The input device 212 includes a keyboard, a mouse, and the like, and is used to perform various settings and operations on the control unit 204. For example, it is operated when the water level measurement device 30 generates the water level data and generates a control command for setting the predetermined period T to the server 200.
The remote control unit 214 controls the on-off valve 22. In this embodiment, the remote control unit 214 generates a signal for controlling opening / closing of the on-off valve, and supplies the signal to the on-off valve 22 through a predetermined signal line. It is configured.
Further, the control unit 204 collects water level data collected from the water level measuring device 30 provided in the first pipeline network 14A, and water level data collected from the water level measuring device 30 provided in the second pipeline network 14B. The remote control unit 214 is controlled according to the procedure described below based on the above.
In this embodiment, the water level measuring device 30 provided in the first pipeline network 14A constitutes the first water level measuring means in the claims, and the water level measuring device provided in the second pipeline network 14B. 30 constitutes a second water level measuring means, and the control section 204 and the remote control section 214 constitute a control means as claimed.

Next, operations of the water level measuring device 30 and the server 200 will be described with reference to the flowchart of FIG.
First, in the water level measuring device 30, the control unit 3004 is activated at a predetermined cycle T set in advance by a timer or the like (step S10).
When activated, the control unit 3004 measures the water level data of the sewage S based on the measurement result of the distance obtained from the water level sensor 3002 (step S12).
The control unit 3004 transmits the water level data to the server 200 via the communication unit 3006 (step S14), returns to step S10, and waits for the next activation.
Such measurement of the water level data and transmission to the server 200 are performed by the respective water level measuring devices 30 installed in the first and second pipeline networks 14A and 14B.

On the other hand, the control unit 204 of the server 200 stores each water level data transmitted from each water level measuring device 30 installed in the first and second pipeline networks 14A and 14B in the database 206, while each water level data The first predicted sewage amount predicted to be transported to the first sewage treatment plant 12A and the second prediction predicted to be transported to the second sewage treatment plant 12B based on the temporal change of The amount of sewage is calculated (step S20). The calculation of the first and second predicted sewage amounts can be performed using various conventionally known methods.
Then, whether or not the first predicted sewage amount exceeds the sewage treatment capacity of the first sewage treatment plant 12A, and whether or not the second predicted sewage amount exceeds the sewage treatment capability of the second sewage treatment plant 12B. Prediction is made (step S22). Specifically, the following prediction results 1 to 4 are obtained.
(Prediction result 1) The predicted sewage amount of the first sewage treatment plant 12A exceeds the sewage treatment capacity of the first sewage treatment plant 12A, and the predicted sewage amount of the second sewage treatment plant 12B is second. It does not exceed the sewage treatment capacity of the sewage treatment plant 12B.
(Prediction result 2) The predicted sewage amount of the first sewage treatment plant 12A does not exceed the sewage treatment capacity of the first sewage treatment plant 12A, and the predicted sewage amount of the second sewage treatment plant 12B is second. It exceeds the sewage treatment capacity of the sewage treatment plant 12B.
(Prediction result 3) The predicted sewage amount of the first sewage treatment plant 12A does not exceed the sewage treatment capacity of the first sewage treatment plant 12A, and the predicted sewage amount of the second sewage treatment plant 12B is second. It does not exceed the sewage treatment capacity of the sewage treatment plant 12B.
(Prediction result 4) The predicted sewage amount of the first sewage treatment plant 12A exceeds the sewage treatment capacity of the first sewage treatment plant 12A, and the predicted sewage amount of the second sewage treatment plant 12B is second. It exceeds the sewage treatment capacity of the sewage treatment plant 12B.
Then, as shown below, on / off control of the on-off valve 22 is performed based on the prediction results 1 to 4 (step S24), and the process returns to step S20 to repeat the same processing.
In the case of the prediction result 1, the on-off valve 22 is opened and the sewage is caused to flow through the bypass channel 20 so that the sewage flows from the first pipeline network 14A to the second pipeline network 14B. Thereby, the amount of sewage carried to the first and second sewage treatment plants 12A and 12B can be made equal to or less than the sewage treatment capacity of the first and second sewage treatment plants 12A and 12B.
In the case of the prediction result 2, the on-off valve 22 is opened and the sewage is caused to flow through the bypass 20, thereby allowing the sewage to flow from the second pipeline 14 </ b> B to the first pipeline 14 </ b> A. Thereby, the amount of sewage carried to the first and second sewage treatment plants 12A and 12B can be made equal to or less than the sewage treatment capacity of the first and second sewage treatment plants 12A and 12B.
In the case of the prediction result 3, the on-off valve 22 is closed and the sewage of the bypass 20 is not allowed to flow. In this case, a problem arises because the amount of sewage carried to the first and second sewage treatment plants 12A and 12B is less than the sewage treatment capacity of the first and second sewage treatment plants 12A and 12B. Absent.
In the case of the prediction result 4, it is predicted that the amount of sewage will exceed the sewage treatment capacity of the first and second sewage treatment plants 12A and 12B regardless of whether the on-off valve 22 is opened or closed. It doesn't matter. In this case, the inflow of sewage into the first and second sewage treatment plants 12A and 12B is temporarily stopped, or the rivers and the sea are not passed through the first and second sewage treatment plants 12A and 12B. Control to discharge.

According to the present embodiment, the bypass channel 20 that connects the adjacent pipeline networks 14A and 14B among the pipeline networks 14A and 14B of the sewage sections 10A and 10B adjacent to each other is provided, and the bypass channel 20 is opened and closed. An on-off valve 22 is provided to measure the sewage water levels at a plurality of locations in the pipeline network 14A of one sewage section 10A, and generate first water level data at each of the plurality of locations, and the pipeline network 14B of the other sewage section 10B. And measuring the sewage water levels at a plurality of locations, generating second water level data at the plurality of locations, and controlling the opening / closing of the on-off valve 22 based on the plurality of first water level data and the plurality of second water level data. I made it.
For this reason, the amount of sewage that is predicted to temporarily not exceed the treatment capacity of the sewage treatment plant from the pipeline network on the sewage treatment plant side where the sewage treatment amount is expected to temporarily exceed the sewage treatment plant's sewage treatment plant side. Sewage can be carried to the pipeline network via the bypass 20. Therefore, it is possible to effectively utilize the sewage treatment capacity of the existing sewage treatment plant and increase the amount of sewage without increasing the sewage treatment capacity of the existing sewage treatment plant and without establishing a new sewage treatment plant. It is possible to respond quickly.
Further, in this embodiment, it is necessary to newly provide the bypass 20, the on-off valve 22, the water level measuring device 30, and the server 200, but the time and cost required to provide these are the same as those of the existing sewage treatment plant. Compared with the case where the sewage treatment capacity is increased or a new sewage treatment plant is provided, the amount can be significantly reduced.
Further, in this embodiment, the location where the water level measurement device 30 measures the sewage water level of the pipeline networks 14A and 14B is upstream of the position on the pipeline networks 14A and 14B to which the bypass channel 20 is connected. Since the position is set on the side, the change in the sewage water level can be grasped at an earlier time point, which is advantageous in obtaining the predicted sewage amount reliably and quickly.

  In this embodiment, the water level data transmitted from the communication unit 3006 of the water level measuring device 30 to the server 200 or the command data transmitted from the server 200 to the communication unit 3006 is in a text format (HTML format). However, the format of each data is not limited to the text format (HTML format). The communication method for transmitting the water level data and command data is not limited to packet communication, and can be arbitrarily selected according to the form of the communication network between the communication unit 3006 and the communication unit 202 of the server 200. Of course, for example, the communication network may include the Internet or a dedicated line.

It is a conceptual diagram which shows the whole structure of the sewer management system of this invention. It is a block diagram which shows the structure of the communication control system for collecting the sewage water level data. It is a flowchart explaining the management method of a sewer.

Explanation of symbols

10A, 10B: Sewage section, 12A: First sewage treatment plant, 12B: Second sewage treatment plant, 14A: First pipeline network, 14B: Second management network, 20 ... Bypass path, 22 ... open / close valve, 24 ... manhole, 30 ... water level measuring device, 40 ... wireless communication network, 42 ... digital communication network, 200 ... server.

Claims (7)

A sewer management method comprising: a sewage treatment plant provided for each sewage section for treating sewage; and a pipeline network provided for each sewage section for transporting sewage from a terminal use facility such as a home or factory to the sewage treatment plant. Because
While providing a bypass path that connects adjacent pipe networks among the pipe networks of sewage compartments adjacent to each other, provided an on-off valve that opens and closes the bypass path,
Measuring the sewage water level at a plurality of locations in the pipeline network of one of the adjacent sewage partitions, and generating first water level data at each of the plurality of locations,
Measuring the sewage water levels at a plurality of locations in the pipeline network of the other sewage basin adjacent to each other, and generating second water level data at each of the plurality of locations,
Opening and closing the on-off valve based on the plurality of first water level data and a plurality of second water level data;
Sewerage management method characterized by that.   The measurement of the sewage level of the pipe network of the one sewage section is performed by the first water level measuring means installed in the manhole of the pipe network of the one sewage section, and the pipe of the other sewage section The sewerage management method according to claim 1, wherein the measurement of the sewage water level of the net is performed by a second water level measuring means installed in a manhole of a pipe network of the other sewage section.   3. The sewer system according to claim 2, wherein the place where the water level of the sewage is measured is a position upstream of the position on the pipe network to which the bypass is connected. Management method.   The pipeline network includes a branch pipe that carries sewage from the end-use facility, and a trunk line that is connected to the sewage treatment plant, and the branch pipes are connected to the sewage treatment plant. 2. The sewer management method according to claim 1, wherein the manhole in which the means is provided is located on the main line.   The pipeline network includes a branch pipe that carries sewage from the end-use facility, and a trunk line that is connected to the sewage treatment plant and that is connected to the sewage treatment plant. The sewerage management method according to claim 1, wherein a portion of the net is located on the main line. A sewerage management system comprising a sewage treatment plant provided for each sewage section that treats sewage, and a pipeline network that is provided for each sewage section and that carries sewage from a terminal use facility such as a home or factory to the sewage treatment plant. Because
A bypass line connecting adjacent pipe networks among the pipe networks of sewage sections adjacent to each other;
An on-off valve for opening and closing the bypass passage;
A plurality of first water level measuring means for measuring the water level of the sewage at a plurality of locations in the pipeline network of one of the sewage sections adjacent to each other to generate water level data;
A plurality of second water level measuring means for measuring the water level of the sewage at a plurality of locations in the pipeline network of the other sewage section among the sewage sections adjacent to each other, and generating water level data respectively;
Control means for controlling opening and closing of the on-off valve based on a plurality of water level data generated by the first water level measuring means and the second water level measuring means;
A sewer management system comprising: The sewerage management system according to claim 1, wherein the first and second water level measuring means are installed in a manhole of each pipeline network.

Images