JP2001000960A - Control method of wastewater treatment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perfectly prevent the outflow of polluted water to a buffer basin and general rivers by issuing the closing command of a buffer basin on-off gate, the opening command of a polluted wastewater flow dividing on-off gate and the closing command of a buffer basin outlet on-off gate at an operation arriving time. SOLUTION: A gate on-off estimation controller operates the arrival time of polluted water to a buffer basin inlet on-off gate 50 from the received flow velocity of wastewater and the distance from the preliminarily inputted position of the wastewater pollution detector 12 of a building I or the waste water pollution detector 22 of a building II to the buffer basin inlet on-off gate 50 and issues not only a closing command to the buffer basin inlet on-off gate 50 but also an opening command to a polluted wastewater flow dividing on-off gate 40 immediately before the arrival time and issues a closing command to a buffer basin outlet on-off gate 53 in order to perfectly prevent the outflow to general rivers 70.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for controlling wastewater treatment.

[0002]

2. Description of the Related Art In recent years, it is essential for companies not to pollute the local environment.

One of such corporate environmental problems is a factory drainage problem.

In general, wastewater from the final drain of a factory must not contaminate general rivers and sewers.

FIG. 3 is a block diagram showing a conventional method for controlling wastewater treatment.

In FIG. 3, reference numeral 10 denotes a building I, and 11 denotes a building I.
Side drainage channel, 20 is Building II, 21 is Building II side drainage channel, 31
Is a building I / building II collective drainage channel, 32 is a building I / building II collective drainage pollution detector, 40 is a polluted drainage diversion gate
1 is a polluted water flow drainage channel, 42 is a polluted water flow treatment pond, 50
Is a buffer pond entrance opening / closing gate, 51 is a buffer pond, 52 is a buffer pond drainage channel, 53 is a buffer pond exit opening / closing gate, 61 is a pollution detection alarm device, and 70 is a general river.

[0007] If polluted water is erroneously discharged from the building I10, first, the pollution detectors 12, 22 in the buildings I and II detect the pollution.

Next, the pollution detectors 12 and 22 in the building I and the building II are provided with a pollution detection alarm device 6 having an environmental monitor.
1 to transmit a contamination detection signal.

Next, the contamination detection alarm device 61 which has received the contamination detection signal issues an alarm.

Next, the environmental observer who has heard the alarm from the pollution detection / alarm device 61 first closes the buffer pond exit opening / closing gate 53 leading to the general river.

Next, the environmental observer closes the buffer pond entrance opening / closing gate 50 and releases the polluted drainage diversion opening / closing gate 40 to cause the polluted water flow treatment pond 4 to pass through the polluted water drainage channel 41.
Divide into 2.

Next, the environmental observer operates the polluted water flow treatment pond 42.
Purification treatment of polluted water diverted to For example, when the polluted water has an increased acidity, an alkaline aqueous solution is added to neutralize the polluted water, and when the polluted water has an increased alkalinity, the acid aqueous solution is added to neutralize the polluted water.

[0013] Furthermore, the environmental observer is the building I of the source of polluted water.
Notify 10 officials and take measures to stop polluted water spills.

These measures are taken quickly and cooperatively.

[0015]

As described above, in the conventional method for controlling wastewater treatment, the environmental monitor who has heard the alarm issued from the pollution detection alarm device 61 firstly operates the buffer pond outlet opening / closing gate 53 or the buffer pond inlet opening / closing. Rush to gate 50, immediately close those gates and open / close gate 4
0 is released and the water is diverted to a polluted water flow treatment pond 42 via a polluted water flow drain 41.

However, in the conventional method of controlling wastewater treatment, since a series of operations are performed by an environmental monitor, a large pollution problem may occur due to overlooking an alarm, and various lags may occur due to a time lag in each treatment operation. However, there is a drawback that the problem occurs.

For example, an environmental monitor who has heard the alarm issued from the pollution detection / alarm device 61 immediately rushes to the vicinity of the buffer basin 51 and takes necessary measures. It is unknown whether it is done. Therefore, the environmental monitor opens the polluted drainage diversion opening / closing gate 40 at a stage where polluted water does not enter, and as a result, a large amount of ordinary drainage that is not polluted water flows through the polluted water drainage channel 41 through the polluted water drainage channel 41. For example, the flow may be diverted to the treatment pond 42. For such a case, the polluted water flow treatment pond 42 must be an unnecessarily large pond.

Conversely, when the polluted water has already entered the buffer pond 51, it is necessary to perform a large-scale purification process on the buffer pond 51. In the worst case, the polluted water flows out of the buffer pond outlet opening / closing gate 53 into the general river 70, causing a local pollution problem.

The present invention has been made in view of such a point, and an object of the present invention is to solve the above-mentioned drawbacks of the prior art, and to quickly perform even if polluted water flows out of a building or the like in a factory. In addition, the buffer pond entrance opening / closing gate is automatically closed and the polluted drainage diversion flow opening / closing gate is opened, so that the polluted water can be diverted to the polluted water flow treatment pond via the polluted water flow drainage channel, whereby the polluted water can be buffered and the general river. It is an object of the present invention to provide a method for controlling wastewater treatment that can completely prevent the outflow to the wastewater.

[0020]

The gist of the present invention resides in that a building drainage pollution detector and a drainage flow velocity detector are installed in a building drainage channel, and the building drainage pollution detector detects pollution. The drainage flow rate detector detects the flow rate of the drainage water, and sends the flow rate detection signal to the gate opening / closing prediction control controller. Automatically control so as to calculate the time to reach the gate and to issue an instruction to close the buffer pond entrance opening / closing gate, an instruction to open the polluted drainage diversion opening / closing gate, and an instruction to close the buffer pond exit opening / closing gate at the calculated arrival time. The present invention provides a method for controlling wastewater treatment.

In the present invention, it is preferable that the distance from the position of the wastewater pollution detector to the opening / closing gate of the buffer pond is previously input to the gate opening / closing prediction controller.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a method for controlling wastewater treatment according to the present invention will be described with reference to the drawings.

FIG. 1 is an overall block diagram showing an embodiment of a method for controlling wastewater treatment according to the present invention.

FIG. 2 is a partially enlarged block diagram of FIG.

1 and 2, reference numeral 10 denotes a building I, 11
Is a drainage channel on the building I side, 12 is a detector on the drainage contamination of the building I, 13
Is Building I drainage flow velocity detector, 20 is Building II, 21 is Building II
Side drainage channel, 22 is Building II drainage pollution detector, 23 is Building II
Drainage flow velocity detector, 31 is a drainage channel for Building I and Building II, 3
2 is a building I / building II collective drainage pollution detector, 40 is a polluted drainage diversion opening / closing gate, 41 is a polluted water flow drainage channel, 42 is a polluted water flow treatment pond, 50 is a buffer pond entrance opening / closing gate, 51 is a buffer pond, 52 is a buffer reservoir drainage channel, 53 is a buffer reservoir outlet opening / closing gate, 60 is a gate opening / closing prediction control controller, 61
Is a pollution detection alarm device, and 70 is a general river.

That is, in one embodiment of the method for controlling wastewater treatment according to the present invention, a building I drainage pollution detector 12 and a building I drainage flow velocity detector 1 are provided in a building I side drainage channel 11 of a building I10 in a factory.
3 is installed. Similarly, the drainage channel 2 on the building II side of the building II20
1 is provided with a Building II drainage pollution detector 22 and a Building II drainage flow velocity detector 23. Here, the building I wastewater pollution detector 12, the building II wastewater pollution detector 22, and the like are a pH detector, an oil detector, a water pollution detector, and the like. The building I wastewater pollution detector 12 and the building II wastewater pollution detector 22 constantly monitor wastewater pollution.

That is, in one embodiment of the wastewater treatment control method of the present invention, first, the building I wastewater pollution detector 12 or the building
II The wastewater pollution detector 22, or both, detects wastewater pollution.

Next, the building I drainage flow velocity detector 13 and / or the building II drainage flow velocity detector 23, or both of them, read the flow velocity of the waste water when receiving the drainage contamination detection signal, and predict the flow velocity of the waste water by opening and closing the gate. Transmit to control controller 60. Here, the gate opening / closing prediction controller 60 is a personal computer, a sequencer, an arithmetic computer, a display device, or the like, or a combination of two or more of them.

Next, the gate opening / closing prediction controller 60 determines the buffer pool entrance opening / closing gate 50 from the received drainage flow rate and the position of the building I drainage pollution detector 12 or the building II drainage pollution detector 22 which has been input in advance. Then, the time required for the polluted water to reach the buffer pond entrance opening / closing gate 50 is calculated from the distance up to the distance.

Next, the gate opening / closing prediction controller 60 having calculated the arrival time issues a closing command to the buffer pond entrance opening / closing gate 50 and an opening command to the polluted wastewater diversion opening / closing gate 40 immediately before the arrival time. In order to completely stop the outflow to the general river 70, control is performed so as to issue a closing command to the buffer pond outlet opening / closing gate 53.

Here, the polluted drainage diversion gate 4
In response to the instruction to open to zero, the polluted water is diverted to the polluted water treatment pond 42 via the polluted water flow drain 41. Then, in the polluted water flow treatment pond 42, a necessary purification treatment is performed automatically or artificially so that the waste water is discharged into the buffer pond 51 via a waste water pipe (not shown) as clean waste water.

When a series of these purification processes is completed, the gate opening / closing prediction control controller 60 issues a command to each gate to return to the original state.

That is, when the building I drainage pollution detector 12 or the building II drainage pollution detector 22, or both of them, no longer detects the pollution of the wastewater, the gate opening / closing prediction control controller 60 issues a warning canceling instruction, The drainage flow rate is read via the building I drainage flow velocity detector 13 or the building II drainage flow velocity detector 23, or both, and the time required to reach the buffer pond entrance opening / closing gate 50 is calculated.

Next, the gate opening / closing prediction controller 60 having calculated the arrival time issues an opening command to the buffer pond entrance opening / closing gate 50 immediately after the arrival time and issues a closing command to the polluted drainage diversion opening / closing gate 40. General river 7
Control is performed so as to open to the buffer pond outlet opening / closing gate 53 so as to be able to flow out to 0 and to issue a command.

In one embodiment of the method for controlling wastewater treatment according to the present invention, environmental pollution due to polluted water can be completely prevented and the control can be performed unattended. The size of the diversion treatment pond 42 can be reduced to the minimum necessary.

[0036]

According to the wastewater treatment control method of the present invention,
Environmental pollution due to polluted water can be completely prevented, the control thereof can be performed unattended, and the size of the polluted water flow treatment pond can be reduced to the minimum necessary, which is industrially useful.

[Brief description of the drawings]

FIG. 1 is an overall block diagram showing an embodiment of a method for controlling wastewater treatment according to the present invention.

FIG. 2 is a partially enlarged block diagram of FIG. 1;

FIG. 3 is a block diagram illustrating a conventional method of controlling wastewater treatment.

[Explanation of symbols]

 Reference Signs List 10 Building I 11 Building I side drainage channel 12 Building I drainage pollution detector 13 Building I drainage flow velocity detector 20 Building II 21 Building II side drainage channel 22 Building II drainage pollution detector 23 Building II drainage flow velocity detector 31 Building I Building II Collective Drainage 32 Building I / Building II Collective Drainage Pollution Detector 40 Pollution Drainage Divide Open / Close Gate 41 Pollution Moisture Drainage 42 Pollution Moisture Flow Treatment Pond 50 Buffer Buffer Entrance Open / Close Gate 51 Buffer Pond 52 Buffer Pond Drainage 53 Buffer Pond exit opening / closing gate 60 Gate opening / closing predictive control controller 61 Pollution detection alarm 70 General river

Claims (2)

[Claims] The wastewater discharged from a plurality of buildings in a factory is collected into a collecting drainage through a building drainage channel of the plurality of buildings, and then the collected wastewater flows into a large buffer pond. As long as the drainage pollution detector installed in the collecting drainage channel does not detect pollution, open the buffer pond outlet opening and closing gate to continue flowing the overflow from the buffer pond to the general river by the overflow amount of the drainage, and the drainage pollution detector When detecting the pollution, based on the detection signal of the wastewater pollution detector, the buffer pond entrance opening / closing gate is closed, and the pollution drainage diversion opening / closing gate is opened, and the water is diverted to the polluted water flow treatment pond via the polluted water flow drainage channel. In the method of controlling wastewater treatment,
A building drainage pollution detector and a drainage flow rate detector are installed in the building drainage channel, and when the building drainage pollution detector detects pollution, the drainage flow rate detector detects the flow rate of wastewater to detect the flow rate. A signal is transmitted to the gate opening / closing prediction control controller, and the gate opening / closing prediction control controller is caused to calculate a time required for the polluted water to reach from the building drainage pollution detector to the buffer pond entrance opening / closing gate. A method for controlling wastewater treatment, wherein automatic control is performed so as to issue an instruction to close an entrance opening / closing gate, an instruction to open the pollution drainage diversion opening / closing gate, and an instruction to close a buffer pond exit opening / closing gate. 2. The method for controlling wastewater treatment according to claim 1, wherein the distance from the position of the wastewater pollution detector to the opening / closing gate of the buffer pond is input to the gate opening / closing prediction control controller in advance.