JP2005288358A - Electrolytic wastewater treatment system, electrolytic control device, electrolytic wastewater treatment method, program and storage medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a movable electrolytic wastewater treatment system for automated wastewater treatment, an electrolytic control device, an electrolytic wastewater treatment method, a program and a storage medium. <P>SOLUTION: The electrolytic wastewater treatment system is equipped with a wastewater tank 400 for storing wastewater, an electrolytic cell 500 equipped with a chloride ion tank for storing a solution added to wastewater and containing chloride ions for regulating the concentration of chloride ions of wastewater and an electrolytic device for electrolyzing the solution discharged from a wastewater tank, a residual chlorine measuring instrument 600 for measuring the concentration of residual chlorine of the electrolytic solution in the electrolytic cell during electrolysis, an electrolytic cell water level measuring intrument 530 for measuring the water level of the electrolytic solution of the electrolytic cell and the electrolysis control device 100 for controlling the discharge of the solution from the chloride ion tank, the discharge of the solution from the wastewater tank, electrolytic treatment due to the electrolytic device, the measurement treatment of the residual chlorine measuring instrument and the discharge of the electrolytic from the electrolytic cell. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electrolytic wastewater treatment system, an electrolytic control device, an electrolytic wastewater treatment method, a program, and a storage medium.

  At power plants, large amounts of water are drained during various processes of power generation. For example, blow effluent from boiler / turbine system, regeneration effluent for feed water treatment and condensate demineralization, blow effluent from flue gas desulfurization equipment, warm effluent from cooling equipment, etc., but these effluents are different. It must be drained at the site, and all wastewater must be discharged below public standards based on the Water Pollution Control Law before being discharged into public water areas such as the sea and rivers.

One such wastewater treatment method is electrolysis, and in particular, an electrolyzer using a ferrite electrode has been used to reduce the COD of wastewater (see, for example, Patent Document 1).
JP 2003-126860 A

  When operating drainage facilities and equipment necessary for wastewater treatment, in places where drainage occurs in many places, such as power plants, installing drainage equipment and equipment in all locations is a cost and energy issue. From the aspect, it is very inefficient. Even where a wastewater treatment function is provided, when a large amount of wastewater is generated, additional man-hours are required for the treatment.

  Therefore, in such a case, a mobile drainage facility or apparatus is preferable. However, when a mobile system is operated, it is not efficient if each processing is performed manually.

  The present invention has been made in view of the circumstances as described above, a movable electrolytic wastewater treatment system for performing automated wastewater treatment, an electrolytic control device for controlling automated wastewater treatment, and for performing automated wastewater treatment. It is an object of the present invention to provide an electrolytic wastewater treatment method, a program for causing an electrolytic control apparatus to perform automated wastewater treatment, and a storage medium storing the program in a readable manner.

  In order to solve the above problems, an electrolytic wastewater treatment system according to the present invention includes a drainage storage tank for storing wastewater, and chloride ions for adjusting chloride ion concentration of the wastewater by adding to the wastewater. A chloride ion tank for storing a solution containing, an electrolytic tank equipped with an electrolyzer for electrolyzing the solution discharged from the drain tank, and a residual chlorine concentration of the electrolytic solution in the electrolytic tank, Residual chlorine measuring device for measuring during decomposition, electrolytic cell water level measuring device for measuring the water level of the electrolytic solution in the electrolytic cell, discharge of the solution from the chloride ion bath, solution from the drainage storage tank Control for controlling discharge of water, electrolysis treatment by the electrolytic device, measurement processing of the residual chlorine measuring device, measurement processing of the electrolytic cell water level measuring device, and discharge of the electrolytic solution from the electrolytic cell And further comprising a location, a. The chloride concentration of the electrolytic solution in the electrolytic cell is preferably 3% or more. The residual chlorine measuring device may measure the residual chlorine concentration of the electrolytic solution in the electrolytic cell.

  The electrolytic wastewater treatment system according to the present invention may further include a filter for filtering the solution discharged from the chloride ion tank and the wastewater storage tank, respectively, and the electrolytic solution discharged from the electrolytic tank. It is good also as providing the residual chlorine processing apparatus which removes the residual chlorine of this, and discharges | emits as processing waste water. The electrolytic wastewater treatment system according to the present invention further includes an electrolytic solution circulating device for circulating the electrolytic solution that returns the electrolytic solution discharged from the electrolytic bath to the electrolytic bath, and the residual chlorine measuring device is The residual chlorine concentration of the electrolytic solution in the electrolytic bath may be measured during electrolysis by measuring the residual chlorine concentration of the electrolytic solution during circulation of the electrolytic solution. Furthermore, the electrolytic waste water treatment system according to the present invention may further include an oxygen supply device that supplies a gas containing oxygen to the electrolytic solution in the electrolytic cell, and further includes a moving means for moving the entire system. It is good also as providing.

  Moreover, the electrolytic control apparatus according to the present invention includes a chloride ion tank for storing chloride ions, a drainage storage tank for storing wastewater, an electrolytic tank provided with an electrolytic apparatus, an electrolytic solution circulation apparatus, a residual chlorine measuring apparatus, An electrolytic control device for controlling the electrolytic solution from the chloride ion tank and the waste water storage tank to the electrolytic tank by an amount set for electrolyzing the chloride ion solution and the waste water in the electrolytic tank, respectively. The electrolytic solution circulating device is discharged, the electrolytic solution in the electrolytic cell is discharged, the electrolytic solution is circulated back to the electrolytic cell, and the residual chlorine measuring device is circulated during the circulation of the electrolytic solution. The residual chlorine concentration of the electrolytic solution water is measured and electrolyzed by the electrolyzer according to the current and voltage set for electrolysis, and the residual chlorine concentration is a predetermined concentration. It becomes equal to or larger than, the electrolytic solution circulating apparatus and the electrolyzer is stopped, and wherein the discharging said electrolytic solution is electrolyzed from the electrolytic cell. When the number of times of electrolysis is set, if the number of times of electrolysis that has already been performed has reached a predetermined number, the electrolysis process is terminated, and if the number of times of electrolysis has not been reached For example, when the electrolysis is performed again and the number of times of electrolysis is not set, the amount of water in the drainage storage tank is detected, and when there is drainage in the drainage storage tank, the electrolysis is performed again, and the drainage storage tank If there is no drainage, the electrolysis process may be terminated.

  Furthermore, an electrolytic wastewater treatment method according to the present invention includes a chloride ion tank for storing chloride ions, a wastewater storage tank for storing wastewater, an electrolytic tank provided with an electrolytic device, an electrolytic solution circulation device, and a residual chlorine measuring device. And an electrolytic wastewater treatment method in an electrolytic wastewater treatment system, wherein the chloride ion solution and the wastewater are respectively electrolyzed in the electrolytic tank from the chloride ion tank and the wastewater storage tank. A step of discharging the electrolytic solution to the electrolytic bath, and circulating the electrolytic solution by operating the electrolytic solution circulating device to discharge the electrolytic solution in the electrolytic bath and return it to the electrolytic bath again. During the process of measuring the residual chlorine concentration of the wastewater using the residual chlorine measuring device, the electrolysis apparatus is electrolyzed according to the current and voltage set for electrolysis. A step of electrolyzing the liquid, and a step of stopping the electrolytic solution circulation device and the electrolytic device and discharging the electrolyzed electrolytic solution from the electrolytic cell when the residual chlorine concentration exceeds a predetermined concentration. To include. When the number of times of electrolysis is set, if the number of times of electrolysis that has already been performed has reached a predetermined number, the electrolysis process is terminated, and if the number of times of electrolysis has not been reached For example, if the number of times of electrolysis treatment is not set and the step of performing electrolysis again, the amount of water in the drainage storage tank is detected, and when there is drainage in the drainage storage tank, the electrolysis is performed again, When there is no drainage in the drainage storage tank, the step of terminating the electrolysis treatment may be further included in the electrolytic wastewater treatment method.

  The program according to the present invention includes a chloride ion tank that stores chloride ions, a drainage storage tank that stores wastewater, an electrolytic tank that includes an electrolytic device, an electrolytic solution circulation device, and a residual chlorine measuring device. A program for causing an electrolytic control apparatus for controlling a wastewater treatment system to perform an electrolytic wastewater treatment method, wherein the electrolytic control apparatus includes the chloride ion solution and the wastewater from the chloride ion tank and the wastewater storage tank, respectively. Is discharged to the electrolytic cell by an amount set for electrolysis in the electrolytic cell, and the electrolytic solution circulating device is operated to discharge the electrolytic solution in the electrolytic cell and return it to the electrolytic cell again. The electrolytic solution is circulated, and during the electrolytic solution circulation, the residual chlorine measuring device is used to measure the residual chlorine concentration of the wastewater, and is set for electrolysis. A step of electrolyzing the electrolytic solution in the electrolytic device according to a current and a voltage, and when the residual chlorine concentration exceeds a predetermined concentration, the operation of the electric supply and the electrolytic solution circulation device is stopped, and And a step of discharging the electrolyzed electrolytic solution. When the number of times of electrolysis is set, if the number of times of electrolysis that has already been performed has reached a predetermined number, the electrolysis process is terminated, and if the number of times of electrolysis has not been reached For example, if the number of times of electrolysis treatment is not set and the step of performing electrolysis again, the amount of water in the drainage storage tank is detected, and when there is drainage in the drainage storage tank, the electrolysis is performed again, When there is no drainage in the drainage storage tank, the step of terminating the electrolysis process may be further performed by the electrolysis control device.

  The storage medium according to the present invention stores the program so as to be readable by the electrolysis control device.

  According to the present invention, a movable electrolytic wastewater treatment system for performing automated wastewater treatment, an electrolytic control device for controlling automated wastewater treatment, an electrolytic wastewater treatment method for performing automated wastewater treatment, and an automated wastewater treatment for an electrolytic control device. It has become possible to provide a program to be executed and a storage medium storing the program in a readable manner.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The objects, features, advantages, and ideas of the present invention will be apparent to those skilled in the art from the description of the present specification, and those skilled in the art can easily reproduce the present invention from the description of the present specification. it can. The embodiments and specific examples of the invention described below show preferred embodiments of the present invention, and are shown for illustration or explanation. It is not limited. It will be apparent to those skilled in the art that various modifications and variations can be made based on the description of the present specification within the spirit and scope of the present invention disclosed herein.

=== Configuration diagram of electrolytic wastewater treatment system ===
FIG. 1 shows a configuration diagram of an electrolytic wastewater treatment system 1000 described as an embodiment of the present invention.

  As shown in FIG. 1, an electrolytic wastewater treatment system 1000 according to the present invention includes a seawater storage tank 200 that is a chloride ion tank that stores a solution containing chloride ions, a 20% sodium chloride aqueous solution tank 300, and a wastewater that stores wastewater. The tank 400, the seawater injection pump 210, the sodium chloride aqueous solution injection pump 310, the wastewater treatment pump 410, which are the pumps for pumping up the solution or waste water in each storage tank and tank, and the solution or waste water discharged from each storage tank and tank are filtered. Electrolyzer 500 for electrolyzing the solution discharged from filter 800, seawater storage tank 200, 20% sodium chloride aqueous solution tank 300, and drainage storage tank 400, and for returning the electrolytic solution discharged from electrolytic tank 500 back to the electrolytic tank Electrolytic solution treatment pump 510 as an electrolytic solution circulation device, supplying gas containing oxygen From the bubbling compressor 520 as an element supply device, the electrolytic cell water level measuring device 530 that measures the water level of the electrolytic solution in the electrolytic cell, the residual chlorine measuring device 600 that measures the residual chlorine concentration of the electrolytic solution in the electrolytic cell 500, and the electrolytic cell 500 A residual chlorine treatment device 700 that removes residual chlorine from the discharged electrolytic solution, an electrolysis control device 100 that controls the electrolytic wastewater treatment system 1000, and the like are provided.

  The electrolysis control apparatus 100 is connected to a seawater injection pump 210, a sodium chloride aqueous solution injection pump 310, and a wastewater treatment pump 410 via electric wires 1, 2, and 3, respectively. The valve 710, the residual chlorine measuring device 600, and the electrolytic cell water level measuring device 530 are connected. The electric wires 7 and 8 are connected to the electrolytic solution treatment pump 510 and the bubbling compressor 520, respectively. The electric wire 9 is connected to the electrolytic cell 500. Connected to.

  The seawater injection pump 210 is connected to the seawater storage tank 200 by a pipe 20, and the pipe 20 is provided with a valve 220, and the seawater in the seawater storage tank 200 can be pumped into the pipe 21. The sodium chloride aqueous solution injection pump 310 is connected to a 20% sodium chloride aqueous solution tank 300 by a pipe 30, and the pipe 30 is provided with a valve 320, and a solution containing chloride ions in the 20% sodium chloride aqueous solution tank 300 is piped. Can be pumped to 31. The drainage treatment pump 410 is connected to the drainage storage tank 400 by a pipe 40, and a valve 420 is provided in the pipe 40, and the drainage of the drainage storage tank 400 can be pumped into the pipe 41. The pipes 21, 31 and 41 are coupled to the pipe 10. The pipe 10 is connected to the filter 800 via the pipe 11. That is, seawater, a solution containing chloride ions, and drainage flow into the filter 800 through the pipes 10 and 11.

  The electrolytic cell 500 includes a bubbling compressor 520 as an oxygen supply device that supplies a gas containing oxygen, an electrolytic cell water level measuring device 530 that measures the water level of the electrolytic solution in the electrolytic cell, and the waste water discharged from the electrolytic cell 500. And a circulation line pipe 13 that can be returned to the electrolytic cell 500 by using an electrolytic solution treatment pump 510. This pipe 13 is connected to the pipe 12 for taking in the waste water from the filter 800 and the pipe 14 for discharging the waste water from the electrolytic cell 500 to the residual chlorinator 700, and an electrolytic solution treatment pump 510 is installed. The residual chlorine concentration measuring device 600 is connected to the tube 60 through the tube 60. The electrolytic cell drain valve 710 is installed in the pipe 14 and controls discharge of the electrolytic solution from the electrolytic cell 500 to the residual chlorine processor 700. The residual chlorine treatment device 700 removes residual chlorine from the electrolytic solution from the electrolytic cell 500 and discharges it as treated waste water.

=== Electrolytic control device operation panel ===
FIG. 2 shows an operation panel of the electrolysis control apparatus 100 described as an embodiment of the present invention.

  As shown in FIG. 2, the operation panel of the electrolysis control apparatus 100 includes a display unit (upper part of the operation panel) indicating the operation status of each apparatus and a screen display (lower part of the operation panel) that displays the current state of the electrolytic waste water treatment apparatus 1000. ).

  The rectangle at the top of the operation panel is a display or the like indicating the operating status of each apparatus controlled by the electrolysis control apparatus 100. For example, when the electrolytic treatment pump 510 is operating, the electrolytic treatment pump indicator is turned on. It can also be a button type (ON / OFF is controlled by pressing a button) so that the display can manually control the electrolytic treatment pump 510.

  Further, the current status of the monitored electrolytic wastewater treatment apparatus 1000 is displayed on the left side of the screen display display at the bottom of the operation panel. For example, the current supply status such as 1A and 1V is displayed in the current and voltage columns, respectively.

  On the right side of the screen display at the bottom of the operation panel, when the electrolysis control apparatus 100 sets the discharge amount program, the end processing program, and the condition setting program, the setting contents of each program are displayed. The program once set can be stored by the program number and can be called again by the number.

=== Various condition settings ===
The discharge amounts from the drainage storage tank 400, the 20% sodium chloride aqueous solution tank 300, and the seawater storage tank 200 are determined so that the chloride concentration of the drainage discharged to the electrolytic tank 500 is 3% or more. Usually, the waste water in the waste water storage tank 400 and the solution in the 20% sodium chloride aqueous solution tank 300 may be mixed so that the chloride concentration becomes 3% or more. Since the chloride concentration in the waste water is generally unknown, it is preferable to add a 20% sodium chloride aqueous solution to 15% of the total solution amount.

Program the number of times to repeat electrolytic wastewater treatment. The number of treatments may be any number, but by setting this setting to be blank, setting is made until the drainage of the drainage storage tank 400 is exhausted. From the viewpoint of automation of the electrolytic treatment, it is preferable to leave it blank.

Conditions of the electrolysis is not particularly limited, a constant current is preferably a current density 10~1000A / dm ^2, from the economic point of view, further preferably 20~300A / dm ^2. At that time, it is preferable to control the voltage to be 1 V or more.

=== Procedure of electrolytic wastewater treatment system ===
The procedure of the electrolytic wastewater treatment system 1000 described as an embodiment of the present invention will be described in detail with reference to the flowchart of FIG.

  First, the electrolysis control apparatus 100 of the electrolytic wastewater treatment system 1000 is turned on.

  Seawater seawater injection pump 210, sodium chloride aqueous solution injection pump 310, and wastewater treatment pump 410 pump seawater, 20% aqueous sodium chloride solution, and wastewater by a preset amount, and filter 800 through pipes 10 and 11. Inject. Since these solutions may contain solids (for example, marine debris such as wood chips), the solids are removed by the filter 800 and then injected into the electrolytic cell 500 through the pipes 12 and 13. (S101).

  Next, the electrolysis control apparatus 100 controls the electrolysis process by the electrolysis apparatus (for example, electrode) 540. Specifically, the electrolysis control apparatus 100 supplies electricity to the electrolysis apparatus 540 provided in the electrolysis tank 500 using the electric wire 9 according to the current and voltage set for electrolysis, and starts electrolysis. (S102). Further, by operating the electrolytic solution treatment pump 510, the electrolytic solution discharged from the electrolytic cell 500 is circulated using the pipe 13 (S102). In addition, the bubbling compressor 520 is also operated to supply oxygen-containing gas to the electrolytic solution in order to increase the oxygen concentration in the electrolytic cell 500 and promote electrolysis. The residual chlorine concentration of the electrolytic solution in the electrolytic bath 500 circulating in the pipe 13 is measured using the residual chlorine measuring device 600 by the electrolytic solution treatment pump 510 (S103). By measuring the residual chlorine concentration and determining whether the measured concentration is equal to or higher than a predetermined value (S104), the end point of the electrolysis can be determined as described in Examples 1 to 4. That is, the electrolysis control apparatus 100 measures the chlorine concentration again when it is less than the predetermined value, and stops the electrolysis and the electrolytic solution treatment pump 510 when it is greater than the predetermined value (S105). Then, when the electrolytic drain valve 710 is opened to discharge the electrolyzed electrolytic cell 500 solution to the residual chlorinator 700 (S106), the electrolytic solution circulating in the pipe 13 passes through the pipe 14. It is discharged to the residual chlorine processor 700. The electrolysis control device 100 confirms whether or not the water level of the electrolyzer 500 detected by the electrolyzer water level measuring device 530 has reached a predetermined water level (for example, 0 indicating that the electrolyzer is empty) (S107), When the electrolytic cell water level measuring device 530 confirms that all the solution in the electrolytic cell 500 has been discharged, the electrolytic drain valve 710 is closed (S108), and the discharge of the electrolytic solution to the residual chlorinator 700 is stopped.

  In the residual chlorine treatment device 700, residual chlorine in the discharged electrolyte solution is removed using, for example, carbon fiber, zeolite, activated carbon or the like. As a result, residual chlorine in an oxidative form that causes corrosion of metals used in pipes, etc., such as free residual chlorine (hypochlorous acid and hypochlorite ions), combined residual chlorine (ammonia) And chlorine combined with organic nitrogen compounds, etc., and wastewater that is more favorable to the environment can be discharged.

  When the electrolytic drainage process is completed, the electrolysis control apparatus 100 determines whether the end process is a program set by the number of processes (S109). If it is a program for judging by the number of processing times, it is judged whether or not the current number of processing times has reached the set number of times (S110). If the set number of times has not been reached, the number of times is increased by one, and again. In order to repeat the electrolytic waste water treatment, it is determined whether there is waste water in the waste water storage tank 400 (S111). This is to prevent the electrolytic waste water treatment from being carried out even though there is no waste water. When it has reached, the power of the electrolysis control device 100 is turned off, and the electrolytic drainage treatment is finished. On the other hand, in the case of a program that does not judge based on the number of treatments, since the electrolytic drainage treatment is performed until the drainage of the drainage storage tank 400 is exhausted, it is confirmed whether or not there is drainage in the drainage storage tank 400 (S111). If there is drainage, the process returns to S101 to repeat the electrolytic drainage process again. If there is no drainage, the electrolytic drainage process is terminated and the electrolysis control apparatus 100 is turned off.

=== Moving means of electrolytic wastewater treatment system ===
As a means for making the electrolytic wastewater treatment system movable, an electrolytic wastewater treatment system can be mounted, and any vehicle or vehicle that can move to any destination using power such as a prime mover Anything Examples thereof include, but are not limited to, a car for carrying cargo, an airplane, a ship, and the like.

Wastewater containing seawater (solution containing jellyfish and containing 304 mg / L of COD) was energized with a Cannon electrode (Φ32 x 600 L) tester with a current of 48 A to measure water quality over time and COD for each electrolysis time Was measured. The results are shown in Table 1 and FIG.

  As shown in Table 1 and FIG. 4, it can be confirmed that when the residual chlorine is 1,000 (mg / L) or more, the target treatment COD 50 (mg / L) or less. That is, it can be controlled to stop the electrolysis when the residual chlorine becomes 1,000 (mg / L) or more.

Drainage (contains 0.6 liters of NaCl 20% in 3.4 liters of flue flush water) 4 liters (NaCl concentration 3%) with a Cannon electrode (Φ32 × 600L) tester with 48 A current applied over time Ammonia was measured for each water quality measurement and electrolysis time. The results are shown in Table 2 and FIG.

  As shown in Table 2 and FIG. 5, when the residual chlorine is 100 (mg / L) or more, it can be confirmed that the target treated ammonia is 50 (mg / L) or less. That is, it can be controlled to stop electrolysis when the residual chlorine reaches 100 (mg / L).

Drainage (containing 0.1% NaCl 20% in 3.7 liters of flue flush water) 4 liters (NaCl concentration 1.5%) was energized with a Cannon electrode (Φ32 × 600L) tester at 48A. In particular, water quality was measured and ammonia was measured at every electrolysis time. The results are shown in Table 3 and FIG.

  As shown in Table 3 and FIG. 6, when the NaCl concentration is 1.5%, it takes more time than 3%, and it can be confirmed that the ammonia treatment cannot be performed efficiently.

Drainage (containing 1.7 liters of flue flush water, 1.7 liters of water and 0.6 liters of NaCl 20%) 4 liters (double diluted effluent adjusted to 3% NaCl concentration), Cannon electrode (Φ32 × 600L) A current of 48 A was applied with a test machine, and water quality was measured over time and ammonia was measured at every electrolysis time. The results are shown in Table 4 and FIG.

  As shown in Table 4 and FIG. 7, when the electrolysis is controlled so that the residual chlorine is 100 (mg / L) when diluted twice and the NaCl concentration is 3%, more efficient ammonia treatment can be achieved than without dilution. I can confirm that I do it.

  According to the above Examples 1 to 4, the solution injected into the electrolytic cell 500 desirably has a chloride concentration of 3% or more, and the residual chlorine concentration is 1000 (mg / L) for the purpose of COD treatment. Is a predetermined concentration, and 100 (mg / L) is preferably a predetermined concentration when ammonia treatment is intended. If both COD treatment and ammonia treatment are intended, 1000 (mg / L) is preferably set to a predetermined concentration.

It is a figure which shows the structure of the electrolytic waste water treatment system 1000 demonstrated as one Example of this invention. It is a figure which shows the operation panel of the electrolysis control apparatus 100 demonstrated as one Example of this invention. It is a flowchart which shows the process sequence of the electrolytic waste water treatment system 1000 demonstrated as one Example of this invention. It is a figure which shows the measurement result of the residual chlorine with respect to the electrolysis time of Example 1, and COD. It is a figure which shows the measurement result of the residual chlorine with respect to the electrolysis time of Example 2, and COD. It is a figure which shows the measurement result of the residual chlorine with respect to electrolysis time of Example 3, and COD. It is a figure which shows the measurement result of the residual chlorine and COD with respect to the electrolysis time of Example 4.

Explanation of symbols

1-9 Electric wire 10-14 Piping 20-21 Piping 30-31 Piping 40-41 Piping 60 Tube 100 Electrolytic control device 200 Seawater storage tank 210 Seawater infusion pump 220 Valve 300 20% sodium chloride aqueous solution tank 310 Sodium chloride aqueous solution infusion pump 320 Valve 400 Wastewater storage tank 410 Wastewater treatment pump 420 Valve 500 Electrolytic tank 510 Electrolytic solution treatment pump 520 Compressor for bubbling 530 Electrolyzer water level measuring device 540 Electrolytic device 600 Residual chlorine measuring device 700 Residual chlorine processor 710 Electrolytic drainage valve 1000 Electrolytic wastewater treatment system

Claims (15)

A waste water storage tank for storing waste water;
A chloride ion tank for storing a solution containing chloride ions for adjusting the chloride ion concentration of the wastewater by adding to the wastewater;
An electrolysis tank comprising an electrolysis device for electrolyzing the solution discharged from the drainage tank;
A residual chlorine measuring device for measuring the residual chlorine concentration of the electrolytic solution in the electrolytic cell during electrolysis;
An electrolyzer water level measuring device for measuring the water level of the electrolytic solution in the electrolyzer;
Discharge of the solution from the chloride ion tank, discharge of the solution from the waste water storage tank, electrolysis treatment by the electrolytic device, measurement processing of the residual chlorine measuring device, measurement processing of the electrolytic bath water level measuring device, and the electrolysis An electrolysis control device for controlling discharge of the electrolytic solution from the tank;
An electrolytic wastewater treatment system comprising:   The electrolytic waste water treatment system according to claim 1, wherein a chloride concentration of the electrolytic solution in the electrolytic cell is 3% or more.   The electrolytic wastewater treatment system according to claim 1 or 2, wherein the residual chlorine measuring device determines an end point of the electrolysis by measuring a residual chlorine concentration of an electrolytic solution in the electrolytic cell. .   The electrolytic wastewater treatment system according to any one of claims 1 to 3, further comprising a filter for filtering a solution discharged from each of the chloride ion tank and the wastewater storage tank.   5. The electrolytic waste water treatment system according to claim 1, further comprising a residual chlorine treatment device that removes residual chlorine from the electrolytic solution discharged from the electrolytic tank and discharges the residual chlorine as treated waste water. An electrolytic solution circulation device for circulating the electrolytic solution that returns the electrolytic solution discharged from the electrolytic cell to the electrolytic cell again,
The residual chlorine measuring device measures the residual chlorine concentration of the electrolytic solution in the electrolytic cell during electrolysis by measuring the residual chlorine concentration of the electrolytic solution during circulation of the electrolytic solution. The electrolytic waste water treatment system according to any one of claims 1 to 5.   The electrolytic waste water treatment system according to any one of claims 1 to 6, further comprising an oxygen supply device that supplies a gas containing oxygen to the electrolytic solution in the electrolytic cell.   The electrolytic wastewater treatment system according to any one of claims 1 to 7, further comprising moving means for moving the entire system. An electrolytic control device for controlling a chloride ion tank for storing chloride ions, a waste water storage tank for storing waste water, an electrolytic tank equipped with an electrolytic device, an electrolytic solution circulation device, and a residual chlorine measuring device,
From the chloride ion tank and the waste water storage tank, respectively, the chloride ion solution and the waste water are discharged into the electrolytic tank by an amount set for electrolysis in the electrolytic tank,
Operate the electrolytic solution circulation device to discharge the electrolytic solution in the electrolytic tank and circulate the electrolytic solution back to the electrolytic tank again,
During the circulation of the electrolytic solution, the residual chlorine concentration is measured using the residual chlorine measuring device,
Causing the electrolyzer to electrolyze the electrolytic solution according to a current and voltage set for electrolysis,
When the residual chlorine concentration is equal to or higher than a predetermined concentration, the electrolytic solution circulation device and the electrolytic device are stopped,
An electrolysis control device for discharging the electrolyzed electrolytic solution from the electrolytic cell. When the number of times of electrolysis is set, if the number of times of electrolysis that has already been performed has reached a predetermined number of times, the electrolysis process is terminated. Perform electrolysis,
When the number of times of electrolysis treatment is not set, the amount of water in the drainage storage tank is detected, and when there is drainage in the drainage storage tank, electrolysis is performed again, and when there is no drainage in the drainage storage tank, the electrolysis End the process,
The electrolysis control apparatus according to claim 9. Electrolytic wastewater treatment in an electrolytic wastewater treatment system comprising a chloride ion tank for storing chloride ions, a wastewater storage tank for storing wastewater, an electrolytic tank provided with an electrolytic device, an electrolytic solution circulation device, and a residual chlorine measuring device A method,
Discharging the chloride ion solution and the waste water from the chloride ion tank and the waste water storage tank to the electrolytic tank by an amount set for electrolysis in the electrolytic tank, respectively;
Operate the electrolytic solution circulation device to discharge the electrolytic solution in the electrolytic cell and return the electrolytic solution to the electrolytic cell again. During the circulation of the electrolytic solution, the residual chlorine measuring device is used. Measuring the residual chlorine concentration of the waste water;
Electrolyzing the electrolytic solution to an electrolyzer according to a current and voltage set for electrolysis;
When the residual chlorine concentration is equal to or higher than a predetermined concentration, stopping the electrolytic solution circulation device and the electrolytic device, and discharging the electrolytic solution electrolyzed from the electrolytic cell;
Electrolytic waste water treatment method characterized by including. When the number of times of electrolysis is set, if the number of times of electrolysis that has already been performed has reached a predetermined number of times, the electrolysis process is terminated. Performing the electrolysis; and
When the number of times of electrolysis treatment is not set, the amount of water in the drainage storage tank is detected, and when there is drainage in the drainage storage tank, electrolysis is performed again, and when there is no drainage in the drainage storage tank, the electrolysis A step of ending the processing;
The electrolytic waste water treatment method according to claim 11, comprising: Electrolysis for controlling an electrolytic wastewater treatment system comprising a chloride ion tank for storing chloride ions, a drainage storage tank for storing wastewater, an electrolytic tank provided with an electrolytic device, an electrolytic solution circulation device, and a residual chlorine measuring device. A program for causing a control device to perform an electrolytic wastewater treatment method.
Discharging the chloride ion solution and the waste water from the chloride ion tank and the waste water storage tank to the electrolytic tank by an amount set for electrolysis in the electrolytic tank, respectively;
Operate the electrolytic solution circulation device to discharge the electrolytic solution in the electrolytic cell and return the electrolytic solution to the electrolytic cell again, and use the residual chlorine measuring device during the circulation of the electrolytic solution. Measuring the residual chlorine concentration of the waste water;
Electrolyzing the electrolytic solution in the electrolyzer according to a current and voltage set for electrolysis;
When the residual chlorine concentration is equal to or higher than a predetermined concentration, stopping the operation of the electricity supply and the electrolytic solution circulation device, and discharging the electrolyzed electrolytic solution from the electrolytic cell;
A program that executes In the electrolysis control device,
When the number of times of electrolysis is set, if the number of times of electrolysis that has already been performed has reached a predetermined number of times, the electrolysis process is terminated. Performing the electrolysis; and
When the number of times of electrolysis treatment is not set, the amount of water in the drainage storage tank is detected, and when there is drainage in the drainage storage tank, electrolysis is performed again, and when there is no drainage in the drainage storage tank, the electrolysis A step of ending the processing;
14. The program according to claim 13, further comprising:   The storage medium which stored the program of Claim 14 or 15 so that reading by the electrolysis control apparatus was possible.

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