Emergency flush toilet system

Abstract

To provide a flush toilet system with emergency response that can easily suppress deterioration of a sanitary environment of a flush toilet 10 in an emergency.SOLUTION: A flush toilet 10 system 1 with emergency response comprises: a flush toilet 10; a control part 46 that controls a material to be treated discharged from the flush toilet 10 to be discharged into sewage in a normal condition, or controls the material to be treated discharged from the flush toilet to be discharged into solid-liquid separation units 20, 70, that separate solids and liquids contained in the material to be treated, in an emergency; and a tank that stores the liquids contained in the material to be treated separated by the solid-liquid separation units 20, 70 as washing water for the flush toilet 10.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an emergency flush toilet system. [Background technology]

[0002] 2. Description of the Related Art Flush toilet systems that can be used even when lifelines such as water, sewage, and electricity are unavailable due to a disaster or the like have been known.

[0003] For example, Patent Document 1 discloses a technology in which wastewater is discharged into a sewer system under normal circumstances, and in an emergency, discharge into the sewer system is stopped, the wastewater is purified in a storage tank, and then returned to a water supply tank, thereby circulating the use of cleaning water (rinsing water). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2016-204919 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, with the technology described in Patent Document 1, when wastewater contains a large amount of solid matter (e.g., feces, toilet paper, etc.), the efficiency of purifying the wastewater in the storage tank decreases, causing the flush water to remain dirty and deteriorating the sanitary environment of the flush toilet.

[0006] The present invention has been made in consideration of such problems, and its purpose is to provide an emergency flush toilet system that can easily prevent the deterioration of the sanitary environment of a flush toilet in an emergency. [Means for solving the problem]

[0007] In order to solve the above problems, an emergency flush toilet system according to a first aspect of the present invention comprises a flush toilet, a control unit that controls the material to be treated discharged from the flush toilet to be discharged into a sewer under normal circumstances, and in an emergency, controls the material to be discharged into a solid-liquid separation unit that separates solids and liquids contained in the material, and a tank that stores the liquid contained in the material that has been separated by the solid-liquid separation unit as flush water for the flush toilet.

[0008] In a second aspect of the present invention, when the control unit receives a signal notifying an emergency, the control unit controls the material to be processed to be discharged to a solid-liquid separation unit.

[0009] In addition, in a third aspect of the present invention, when the control unit receives a signal notifying of normal operation, it controls the material to be treated to be discharged into the sewer, and when the capacity of the tank falls below a predetermined amount, it controls the supply of clean water to the tank.

[0010] In a fourth aspect of the present invention, a part or the whole of the solid-liquid separation unit is detachably attached as a cassette, and the cassette includes at least a filter that separates solid matter and liquid contained in the object to be processed. Effect of the Invention

[0011] According to the present invention, deterioration of the sanitary environment of a flush toilet in an emergency can be easily prevented. [Brief description of the drawings]

[0012] [Figure 1] 1 is a schematic diagram showing an example of an emergency flush toilet system according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a plan view of the solid-liquid separation unit according to the embodiment, showing a state before a filter is wound up. [Diagram 3] FIG. 2 is a plan view of the solid-liquid separation unit according to the embodiment, showing a state after the filter has been wound up. [Figure 4]FIG. 2 is a side view of the solid-liquid separation unit according to the embodiment, showing a state before a filter is wound up. [Diagram 5] FIG. 2 is a side view of the solid-liquid separation unit according to the embodiment, showing a state after the filter has been wound up. [Figure 6] FIG. 4 is a cross-sectional view showing a modified example of the solid-liquid separation unit according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] <Overall composition> An emergency flush toilet system 1 according to an embodiment of the present invention (hereinafter referred to as "this embodiment") will be described below with reference to FIG.

[0014] FIG. 1 is a schematic diagram showing an example of an emergency flush toilet system 1 according to this embodiment.

[0015] As shown in FIG. 1, the emergency flush toilet system 1 includes a flush toilet 10, a solid-liquid separation unit 20, a first tank 50, a first pump 52, a purification unit 54, a second tank 56, an ozone generator 58, and a second pump 60.

[0016] Flush toilet 10 has, for example, a toilet bowl, a toilet seat, a lid, a flushing sensor, etc. This flushing sensor detects a flushing instruction from a user of flush toilet 10. For example, when the flushing sensor detects a flushing instruction from the user, it activates second pump 60, sends flushing water to flush the toilet bowl, and discharges the material to be treated in the toilet bowl (for example, urine, feces, toilet paper, etc.) into the sewage or solid-liquid separation unit 20. Examples of this flushing sensor include various sensors that detect when a flush lever is lowered by a user, various sensors that detect when a user stands up from the toilet seat, and non-contact sensors that detect when a user's hand, etc., approaches. Here, in normal times, the material to be treated is discharged into the sewer by the solenoid valve B1. On the other hand, in an emergency in which the water supply and sewerage systems stop functioning due to a disaster or the like, the material to be treated is discharged into the solid-liquid separation unit 20 by the solenoid valve B1. That is, in an emergency, the liquid separated and purified by the solid-liquid separation unit 20 and the purification unit 54, etc., is reused as washing water.

[0017] The solid-liquid separation unit 20 separates the solids and liquids contained in the waste discharged from the flush toilet 10. Examples of the solids include waste materials such as feces and toilet paper. Examples of the liquids include wastewater such as urine and flushing water.

[0018] The first tank 50 stores the liquid separated by the solid-liquid separation unit 20. The first tank 50 also has a sensor that measures the volume of the stored liquid. Examples of this sensor include a weight sensor and an optical sensor.

[0019] The first pump 52 sends the liquid stored in the first tank 50 to the purification unit 54. For example, the first pump 52 operates when the volume of liquid in the first tank 50 is full, and sends the liquid to the purification unit 54. Also, for example, the first pump 52 stops operating when the volume of liquid in the first tank 50 is empty (zero). Note that the first pump 52 stops operating when the volume of liquid in the second tank 56 is full, regardless of the volume of liquid in the first tank 50.

[0020] The purification unit 54 purifies the liquid (wastewater) delivered from the first tank 50. For example, the purification unit 54 is covered with layers of zeolite, activated carbon, etc., and deodorizes and decolorizes the liquid passing through it. Note that the purification unit 54 may also use chemicals or microorganisms (for example, biofilms or plant rhizosphere microorganisms) to perform deodorization, etc.

[0021] The second tank 56 stores flush water. In this embodiment, the second tank 56 stores clean water or a liquid that has passed through the purification unit 54. For example, under normal circumstances, clean water is sent to the second tank 56 by the solenoid valve B2.

[0022] The second tank 56 also has an ozone generator 58. This ozone generator 58 is a device for deodorizing and sterilizing the liquid delivered from the first tank 50. This ozone generator 58 is provided with a timer that automatically stops operation, and the operation time is limited in order to save electricity and to prevent damage to human health caused by an increase in ozone concentration. This operation time may be controlled (managed) by the control unit 46, which will be described later.

[0023] The second tank 56 also has a sensor that measures the volume of the stored liquid (cleaning water). The solenoid valve B2 also has a sensor (for example, an optical sensor) that detects that clean water is being conveyed (supplied).

[0024] The second pump 60 pumps the liquid (flushing water) stored in the second tank 56 to the flush toilet 10. For example, the second pump 60 operates when a flush sensor in the flush toilet 10 detects a flush command.

[0025] (Example 1) 2 to 5 are schematic diagrams showing an example (specific example 1) of the solid-liquid separation unit 20 according to this embodiment.

[0026] As shown in Figures 2 to 5, the solid-liquid separation unit 20 includes a first drainage outlet 22, a filter 24, a lattice mesh 26, a first guide roller 28, a second guide roller 30, a height sensor 32, a delivery roller 34, a winding roller 36, a motor 38, a second drainage outlet 40, a power source 42, a blower 44, and a control unit 46.

[0027] The first drain outlet 22 is a drain outlet through which the material to be treated discharged from the flush toilet 10 passes. The first drain outlet 22 is configured such that, for example, the area increases downward (in the direction of gravity) so that the filtering area of ​​the filter 24 spread in the horizontal direction increases. The first drain outlet 22 has a lifting means (not shown). The lifting means is realized, for example, by a lifting motor. The lifting means is controlled, for example, by the control unit 46. The lifting means lifts the first drain outlet 22 when, for example, the motor 38 starts to operate, and lowers the first drain outlet 22 so that the lower part of the first drain outlet 22 touches the horizontally spread filter 24 when the motor 38 stops to operate. This allows the filter 24 to be smoothly wound by the winding roller 36.

[0028] The filter 24 is a filter medium that is spread horizontally between the delivery roller 34 and the take-up roller 36 and separates solid matter and liquid contained in the material to be treated discharged from the flush toilet. The material to be treated falls from the first drain outlet 22 onto the horizontally spread filter 24, with the solid matter remaining on the upper part (upper surface) of the filter 24 and the liquid passing through the filter 24 and falling downward (in the direction of gravity). Examples of the filter 24 include gauze made from a plant material and nonwoven fabric made of resin. The filter 24 may be configured in a multi-layered structure, or may have irregularities (pleats, etc.) to facilitate adhesion (adsorption) of solid matter.

[0029] In this embodiment, the filter 24 is configured such that the portion where solid-liquid separation has not been performed (unused portion) is wound in a roll around a delivery roller 34, and the portion where solid-liquid separation has been performed (used portion) is wound in a roll around a winding roller 36. A certain tension is applied to the filter 24 to prevent wrinkles and sagging.

[0030] In this embodiment, the used filter 24 (filter 24 with solid matter attached thereto) wound by the winding roller 36 can be replaced with a new filter 24, for example, by the manager of the emergency flush toilet system 1. For example, when the filter 24 is completely wound on the winding roller 36, the manager of the emergency flush toilet system 1 can collect (remove) a part or all of the solid-liquid separation unit 20 including the filter 24 as a cassette, and install a cassette (a part or all of the solid-liquid separation unit 20) including a new filter 24 in the emergency flush toilet system 1. That is, a part or all of the solid-liquid separation unit 20 is detachable as a cassette. This cassette includes at least the filter 24. For example, the cassette includes the filter 24, the lattice net 26, the first guide roller 28, and the second guide roller 30. The cassette may include a part or all of the delivery roller 34, the winding roller 36, the motor 38, the power source 42, the blower 44, and the control unit 46.

[0031] The lattice net 26 supports the filter 24, which is spread horizontally between the delivery roller 34 and the take-up roller 36. The lattice net 26 has holes that allow the liquid that has passed through the filter 24 to pass downward (in the direction of gravity). Examples of this lattice net 26 include a metal net and metal punchings.

[0032] The first guide roller 28 is provided at the end of the lattice mesh 26 on the side of the delivery roller 34, and guides the filter 24 delivered from the delivery roller 34 to the upper surface of the lattice mesh 26. For example, the first guide roller 28 is composed of two rollers, and performs this guidance by sandwiching the filter 24 between the two rollers.

[0033] The second guide roller 30 is provided at the end of the lattice mesh 26 on the winding roller 36 side, and guides the filter 24 being wound up by the winding roller 36, causes solid matter contained in the material to adhere (adsorb) to the filter 24, and squeezes out moisture contained in the solid matter. For example, the second guide roller 30 is composed of two rollers, and performs the guiding, adhesion and squeezing of the solid matter by sandwiching the filter 24 between the two rollers.

[0034] The height sensor 32 detects the height of solid matter remaining on the horizontally spread filter 24. For example, the height sensor 32 detects when the height of the remaining solid matter reaches a predetermined value (for example, 7 centimeters).

[0035] The filter 24, which has not yet been subjected to solid-liquid separation, is wound in a roll shape around the delivery roller 34. The filter 24 wound around the delivery roller 34 is reduced as the take-up roller 36 rotates.

[0036] The winding roller 36 winds up the filter 24 and the solid matter separated by the filter 24 into a roll. The amount of filter 24 wound up by the winding roller 36 increases as the winding roller 36 rotates. The winding roller 36 has a motor 38 for winding up the filter 24, and as the motor 38 rotates, the winding roller 36 winds up the filter 24 from which solid-liquid separation has been performed, as well as the solid matter adhering to the filter 24.

[0037] The second drain outlet 40 is a drain outlet that drains the liquid separated by the filter 24 so that the liquid can be reused as cleaning water. For example, the second drain outlet 40 drains the liquid into the first tank 50.

[0038] The power source 42 supplies power to the entire emergency flush toilet system 1. For example, the power source 42 supplies power to operate various sensors, various pumps, the motor 38, the blower 44, the control unit 46, etc. This power is supplied from, for example, a storage battery, a solar panel, a small generator, etc.

[0039] The blower 44 blows air onto the filter 24 and the solid matter, thereby drying the filter 24 and the solid matter. The filter 24 includes the filter 24 spread in the horizontal direction between the delivery roller 34 and the take-up roller 36, and the filter 24 taken up by the take-up roller 36.

[0040] The control unit 46 controls the entire emergency flush toilet system 1. For example, the control unit 46 is configured with a CPU, memory, receiving means, operation means, etc. The receiving means may be, for example, an antenna that receives radio waves. Furthermore, the operation means may be, for example, a changeover switch or button that accepts instructions from the manager of the emergency flush toilet system 1.

[0041] In this embodiment, the control unit 46 controls the solenoid valve B1, the solenoid valve B2, the motor 38, the blower 44, and the like.

[0042] Furthermore, in this embodiment, the control unit 46 switches the solenoid valves B1 and B2 when an instruction to switch from normal to emergency is given. Examples of this switching instruction include receiving a signal (e.g., radio waves) notifying of an emergency from a national or local government, a switching operation to emergency by an administrator of the emergency flush toilet system 1, detection of no clean water being conveyed (supplied) through the solenoid valve B2, etc. Specifically, when an instruction to switch from normal to emergency is given, the control unit 46 controls the solenoid valve B1 to be switched so that the material to be treated is discharged to the solid-liquid separation unit 20, and controls the solenoid valve B2 to stop the conveyance of clean water.

[0043] Furthermore, in this embodiment, the control unit 46 switches the solenoid valves B1 and B2 when there is an instruction to switch from emergency to normal operation. Examples of this switching instruction include receiving a signal (e.g., radio waves) from a national or local government notifying normal operation, a switching operation to normal operation by an administrator of the emergency flush toilet system 1, detection of clean water being pumped (supplied) through the solenoid valve B2, etc. Specifically, when there is an instruction to switch from emergency to normal operation, the control unit 46 controls the solenoid valve B1 to be switched so that the material to be treated is discharged into the sewer, and controls the solenoid valve B2 to be switched so that clean water is pumped (supplied).

[0044] In this embodiment, the control unit 46 automatically operates the motor 38 when a predetermined condition is satisfied. Examples of the predetermined condition include a predetermined number of times (e.g., 5 times) of flushing instructions detected by a flushing sensor that detects flushing instructions from users of the flush toilet, and a predetermined value of the height detected by a height sensor 32 that detects the height of solid matter remaining on the horizontally spread filter. Here, the control unit 46 controls the number of rotations of the motor 38 so as to wind up the filter 24 at a distance (e.g., 30 centimeters) from the first guide roller 28 to the second guide roller 30. Since the diameter of the filter 24 wound up on the winding roller 36 increases as the filter 24 is gradually wound up on the winding roller 36, the control unit 46 may reduce the number of rotations of the motor 38 each time the motor 38 is operated. Specifically, the control unit 46 initially sets the number of rotations of the motor 38 to 10, and reduces the number of rotations by one each time the motor 38 performs winding up a predetermined number of times (e.g., 4 times).

[0045] Furthermore, in this embodiment, after the used filter 24 has been wound up by the winding roller 36 by the motor 38, the control unit 46 operates the blower 44 for a predetermined time (for example, three minutes).

[0046] (Example 2) FIG. 6 is a cross-sectional view showing a modified example (specific example 2) of the solid-liquid separation unit according to the present embodiment.

[0047] As shown in FIG. 6, the solid-liquid separation unit 70 includes a container 72, a filter 74, a first drain outlet 76, and a second drain outlet 78.

[0048] The container 72 has a space for accommodating the object to be treated and the filter 74. For example, the container 72 is preferably made of polyethylene. The container 72 may be substantially cubic in shape for ease of handling, or may have a funnel-shaped lower portion for efficient solid-liquid separation.

[0049] The filter 74 is provided inside the container 72 and performs solid-liquid separation of the material to be treated. The filter 74 separates the material to be treated that falls through the first drainage outlet 76 into solid and liquid, leaving the solids on top of the filter 74 and draining the separated liquid into the first tank 50 through the second drainage outlet 78.

[0050] Moreover, the filter 74 is, for example, cylindrical with an opening on the first drain outlet 76 side and a closing on the second drain outlet 78 side. In this case, the open end of the filter 74 is fixed to the inner wall of the upper surface of the container 72. Alternatively, the filter 74 may be attached only to the lower surface inside the container 72. Note that a spacer may be disposed between the inner wall of the container 72 and the filter 74 to ensure a space between the container 72 and the filter 74 and facilitate the flow of the separated liquid. Examples of this spacer include a metal net and a resin net.

[0051] The first drain outlet 76 is provided in the upper part of the container 72. The first drain outlet 76 may have a dedicated lid, and this lid may be connected to the first drain outlet 76 with a string to prevent it from being lost.

[0052] The second drain outlet 78 is provided at the bottom of the container 72. The second drain outlet 78 may have a dedicated lid, and this lid may be connected to the second drain outlet 78 with a string to prevent it from being lost. The second drain outlet 78 may have a flange on the outer surface of the end portion on the first tank 50 side. In this case, the second drain outlet 78 can be connected to the flange using a screw clamp. The second drain outlet 78 may also have an openable and closable valve (e.g., a ball valve) to prevent the contents from leaking when replacing the solid-liquid separation unit 70, making the replacement work easier.

[0053] <Effects> As described above, this embodiment comprises a flush toilet 10, a control unit 46 that controls the material to be treated discharged from the flush toilet 10 to be discharged into the sewer under normal circumstances, and in an emergency, controls the material to be discharged into a solid-liquid separation unit 20 that separates solids and liquids contained in the material, and a tank (50, 56) that stores the liquid contained in the material separated by the solid-liquid separation unit 20 as flush water for the flush toilet 10.

[0054] According to this configuration, the liquid from which solids contained in the treated material have been removed by the solid-liquid separation unit 20 is reused as cleaning water, making it easy to prevent the sanitary environment of the flush toilet 10 from deteriorating in an emergency.

[0055] In addition, in this embodiment, the control unit 46 performs control so as to discharge the workpiece to the solid-liquid separation unit 20 when a signal notifying an emergency is received.

[0056] According to this configuration, the method of discharging the workpieces can be switched to an emergency method in response to a signal notifying an emergency, thereby reducing the burden on the manager.

[0057] In addition, in the present embodiment, when the control unit 46 receives a signal notifying the normal state, it controls the discharge of the material to be treated into the sewer, and when the capacity of the tank (50, 56) falls below a predetermined amount, it controls the supply of clean water to the tank (50, 56).

[0058] According to this configuration, the method of discharging the treated material can be switched to normal mode in response to a signal notifying the user of normal mode, thereby reducing the burden on the manager and making it easy to prevent the sanitary environment of the tank (50, 56) and the flush toilet 10 from deteriorating.

[0059] In this embodiment, a part or the whole of the solid-liquid separation unit 20 is detachably mounted as a cassette, and the cassette includes at least a filter 24 that separates solid matter and liquid contained in the object to be treated.

[0060] According to this configuration, a part or all of the solid-liquid separation unit 20 including the used filter 24 can be easily replaced as a cassette, thereby reducing the maintenance work required by the manager of the emergency flush toilet system 1.

[0061] <Modification> Although the present embodiment has been described above, the above embodiment is intended to facilitate understanding of the present invention, and is not intended to limit the present invention. The present invention may be modified or improved without departing from the spirit of the present invention, and equivalents thereof are also included in the present invention.

[0062] In the above embodiment, the winding roller 36 winds up the filter 24 by the rotation of the motor 38, but the filter 24 may be wound up manually (by a manual winding unit) by a user or manager. Furthermore, the first pump 52 and the second pump 60 may be operated by electricity or may be operated manually by a user, manager, etc.

[0063] In the above embodiment, the manager can freely attach and detach part or all of the solid-liquid separation unit 20 as a cassette. However, a recovery means may be provided that automatically recovers the filter 24 with solid matter attached thereto into a recovery box when the filter 24 is completely wound up on the winding roller 36. The recovery means may have, for example, a drop means that tilts the winding roller 36 so that the used filter 24 falls, or that separates the winding roller 36 from the motor 38. This reduces the effort (number of times) required by the manager to recover the used filter 24.

[0064] Furthermore, in the above embodiment, the control unit 46 has been described as switching the solenoid valve B1 and the solenoid valve B2 when a signal notifying normal operation has been received, but the control unit 46 may switch the solenoid valve B1 to control the discharge of the material to be treated into the sewerage, and then switch the solenoid valve B2 to control clean water to be sent when the capacity of the second tank 56 falls below a predetermined amount (e.g., 3 liters). This allows the liquid contained in the second tank 56 to gradually return to clean water (clean water), making it possible to keep the flush toilet 10 and the emergency flush toilet system 1 clean.

[0065] In addition, in the above embodiment, the solid-liquid separation unit 20 is described as having the first drain outlet 22, power source 42, and control unit 46, but these components may be provided in the emergency flush toilet system 1, for example, in the flush toilet 10.

[0066] Furthermore, in the above embodiment, the emergency flush toilet system 1 is described as including the first tank 50 and the second tank 56, but these tanks may be a single tank.

[0067] <Additional Notes> [Additional note 1] A feed roller that feeds out the filter; A winding roller for winding up the filter; a filter that is spread horizontally between the delivery roller and the take-up roller and separates solid matter and liquid contained in the waste discharged from the flush toilet; a drain outlet for draining the separated liquid so that the liquid can be reused as cleaning water; Equipped with The winding roller winds up the separated solid matter together with the filter. Solid-liquid separation unit. [Additional note 2] a guide roller that guides the filter wound by the winding roller and presses the solid matter into the filter; Equipped with The solid-liquid separation unit according to claim 1. [Additional note 3] a blower for blowing air against the filter and the solid matter; Equipped with 3. The solid-liquid separation unit according to claim 1 or 2. [Additional note 4] The winding roller has a motor for winding up the filter, The motor operates automatically when a predetermined condition is met. 4. A solid-liquid separation unit according to any one of claims 1 to 3. [Additional note 5] A flush sensor that detects a flush command from a user of the flush toilet; Equipped with The predetermined condition is that the number of times detected has reached a predetermined number. The solid-liquid separation unit according to appended claim 4. [Additional note 6] a sensor for detecting the height of solid matter remaining on the horizontally extended filter; Equipped with the predetermined condition being that the detected height reaches a predetermined value; The solid-liquid separation unit according to appended claim 4. [Additional note 7] The filter wound by the winding roller can be replaced with a new filter. 7. A solid-liquid separation unit according to any one of claims 1 to 6. [Additional note 8] A solid-liquid separation unit according to any one of claims 1 to 7; The flush toilet; A control unit that controls the material to be treated discharged from the flush toilet so that it is discharged into a sewer in normal times and into the solid-liquid separation unit in an emergency; a tank for storing the liquid contained in the material separated by the solid-liquid separation unit as flush water for the flush toilet; Equipped with Emergency flush toilet system. [Additional note 9] An ozone generator for deodorizing and sterilizing the liquid discharged from the drain; Equipped with An emergency flush toilet system as described in appendix 8. [Explanation of symbols]

[0068] 1... emergency flush toilet system, 10... flush toilet, 20, 70... solid-liquid separation unit, 46... control unit, 50... first tank, 56... second tank

Claims

1. Flush toilets and A control unit that controls the material to be treated discharged from the flush toilet to be discharged into a sewer in normal times, and controls the material to be treated to be discharged into a solid-liquid separation unit that separates solids and liquids contained in the material to be treated in an emergency; a tank for storing the liquid contained in the material separated by the solid-liquid separation unit as flush water for the flush toilet; Equipped with A part or the whole of the solid-liquid separation unit is detachable as a cassette, The cassette includes a filter that separates solid matter and liquid contained in the waste discharged from the flush toilet, and a take-up roller that winds up the solid matter separated together with the filter. Emergency flush toilet system.

2. The cassette further includes a delivery roller for delivering the filter, The filter is provided so as to be spread horizontally between the delivery roller and the take-up roller. The emergency flush toilet system according to claim 1.

3. The filter wound by the winding roller is replaceable. The emergency flush toilet system according to claim 2.

4. A flush toilet, A control unit that controls the material to be treated discharged from the flush toilet to be discharged into a sewer in normal times, and controls the material to be treated to be discharged into a solid-liquid separation unit that separates solids and liquids contained in the material to be treated in an emergency; a tank for storing the liquid contained in the material separated by the solid-liquid separation unit and clean water as flush water for the flush toilet; Equipped with The control unit stops the supply of clean water to the tank in the emergency state, and when switching from the emergency state to the normal state, controls so that clean water is supplied to the tank in response to the volume of the tank becoming less than a predetermined volume after the discharge destination of the material to be treated discharged from the flush toilet is switched from the solid-liquid separation unit to the sewage. Emergency flush toilet system.

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