Bcp-compatible facility system

Abstract

To provide a facility system that can respond to emergencies such as disasters.SOLUTION: A facility system comprises: a device that suctions drainage including at least one of sewage and miscellaneous wastewater from a first facility installed in a building; a first drain pipe connected to the first facility and flowing drainage by gravity; a connection part connected to the first drain pipe; and a second drain pipe connecting the connection part and the device, wherein the connection part flows drainage to the second drain pipe when the amount of drainage received from the first drain pipe becomes equal to or greater than a threshold value.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a facility system capable of responding to emergencies such as disasters, that is, capable of responding to BCP (Business Continuity Plan). [Background technology]

[0002] Conventional drainage systems use a system known as the gravity system, in which toilet flush water is drained downward in a wastewater pipe by gravity (Non-Patent Document 1, etc.). [Prior art documents] [Non-patent literature]

[0003] [Non-Patent Document 1] Public Buildings Association, Ministry of Land, Infrastructure, Transport and Tourism, Minister's Secretariat, Government Building Maintenance Department, "Facility and Environment Division Building Equipment Design Standards Reiwa 3 Edition," August 2021 Summary of the Invention [Problem to be solved by the invention]

[0004] Gravity drainage requires the installation of a sewage tank under or underground of a building. In the event of a wide-area disaster (flood, earthquake, etc.), the electrical equipment, water supply equipment, sewage tank, and sewage system in the building's underground machine room will be submerged and will stop functioning. In addition, the sewerage infrastructure will stop functioning, causing problems such as toilets becoming unusable.

[0005] When such problems occur, toilets cannot be used in buildings where disaster victims are using as evacuation shelters. In addition to the time it takes to transport temporary toilets, if there are not enough of them, hygiene problems at evacuation shelters and health problems for evacuees could arise.

[0006] In view of the above circumstances, the present invention aims to provide a facility system that can also respond to emergency situations such as disasters. [Means for solving the problem]

[0007] In one aspect, the present invention provides an equipment system comprising: a device for sucking wastewater including at least one of sewage and miscellaneous water from a first facility installed in a building; a first drain pipe connected to the facility and for discharging the wastewater by gravity; a connection part connected to the first drain pipe; and a second drain pipe connecting the connection part to the device, wherein the connection part discharges the wastewater into the second drain pipe when the amount of wastewater received from the first drain pipe reaches or exceeds a threshold value. Effect of the Invention

[0008] According to the above configuration, it is possible to provide a facility system that can respond to emergency situations such as disasters. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram illustrating a first example of an equipment system according to a first embodiment. [Diagram 2] FIG. 2 is a diagram showing a second example of the facility system according to the first embodiment. [Diagram 3] FIG. 13 is a diagram illustrating an equipment system according to a second embodiment. [Figure 4] FIG. 13 is a diagram illustrating an equipment system according to a second embodiment. [Diagram 5] FIG. 13 is a diagram showing an equipment system according to a modified example. [Figure 6] FIG. 1 is a diagram showing an example of a sewage tank. [Figure 7] FIG. 1 shows (a) an example of a disaster sewage tank and (b) an example of a sewage manhole. [Figure 8] FIG. 2 is a diagram showing an example of a well water and rainwater intake system in a facility system. [Figure 9] FIG. 2 is a diagram showing an example of a well water and rainwater intake system in a facility system. [Figure 10] Diagram of the valve for gravity-vacuum connection. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] First Embodiment Hereinafter, an equipment system 1 according to a first embodiment of the present invention will be described with reference to the drawings. Figures 1 and 2 show a first example and a second example of a piping system of the equipment system 1, respectively.

[0011] The equipment system 1 is a system that is mainly installed in the building B, and as shown in Fig. 1 and Fig. 2, includes a toilet 2, a vacuum drainage device 4, valves 5a, 5b, 5c, a disaster sewage tank 6, a sewage manhole 7, a general-purpose water tank 8, a gravity-drainage urinal 20, and a gravity-vacuum connection valve 21. These equipment and devices are connected to each other by a vacuum drainage pipe 3 and a gravity drainage pipe 19. In each figure, arrows are superimposed on the vacuum drainage pipe 3 and the gravity drainage pipe 19 to indicate the flow of sewage. In the following, the explanation will be centered on sewage from the toilet 2 and the gravity-drainage urinal 20, but the system 1, 300 can also be applied to sewage and general-purpose water from equipment other than the toilet 2 and the gravity-drainage urinal 20.

[0012] The toilet bowl 2 and gravity-drain urinal 20 receive water from a utility water tank 8 via piping (not shown), and drain the water into a vacuum drain pipe 3. A valve is installed at the bottom of the toilet bowl 2, which opens and closes in conjunction with the operation of the vacuum drainage device 4. In detail, the valve opens when sewage and waste are discharged from the toilet bowl 2 into the vacuum drain pipe 3, and is closed at other times.

[0013] The gravity drainage urinal 20 receives water from the general purpose water tank 8 via a pipe (not shown), or does not receive water and drains wastewater into a gravity drain pipe 19. The gravity drain pipe 19 is a pipe that drains wastewater generated in the gravity drainage urinal 20 by gravity.

[0014] A gravity / vacuum connection valve 21 is installed at the connection between the gravity drain pipe 19 and the vacuum drain pipe 3. The gravity / vacuum connection valve 21 has the function of measuring the amount of sewage that has flowed through the gravity drain pipe 19 and temporarily storing the sewage. In addition, the gravity / vacuum connection valve 21 has the function of draining the sewage into the vacuum drain pipe 3 in conjunction with the operation of the vacuum drainage device 4 when the measured amount of sewage reaches or exceeds a threshold. The gravity / vacuum connection valve 21 is installed above the expected flood level.

[0015] The gravity / vacuum connection valve 21 is shown in Figure 10. The gravity / vacuum connection valve 21 includes a valve 211 connected to the gravity drain pipe 19, a main body 212, a valve 213 connected to the vacuum drain pipe 3, and a valve 214 provided on the top of the main body 212 to open the inside of the main body 212 to the outside air. The gravity / vacuum connection valve 21 allows wastewater from the gravity drain pipe 19 to flow into the main body 212 by opening the valve 211.

[0016] The vacuum drainage device 4 is a device that generates negative pressure inside the vacuum drainage pipe 3 and sucks wastewater from the toilet bowl 2. Furthermore, the vacuum drainage device 4 has the function of applying positive pressure to the wastewater and pumping it toward the valves 5a and 5b in the vacuum drainage pipe 3. Therefore, the vacuum drainage device 4 can suck wastewater from the toilet bowl below and can also pump wastewater upward.

[0017] The vacuum drainage device 4 is electrically connected to the toilet 2 and can receive instructions from a user of the toilet 2. In response to the user's instructions, the vacuum drainage device 4 performs suction and pumping of wastewater.

[0018] The vacuum drainage device 4 is installed in an intermediate floor machine room 9 located on an intermediate floor (a floor between the first floor and the roof) of building B. The intermediate floor machine room 9 is a machine room that is installed above the anticipated flood level in the event of a disaster such as a flood or tsunami. An emergency power supply system or a storage battery (not shown) is also installed in the intermediate floor machine room 9, so that power can be supplied to the vacuum drainage device 4 even in the event of a power outage. Note that the intermediate floor here refers to a floor between the first floor and the roof, and includes the top floor.

[0019] The disaster sewage tank 6 is a sewage tank for storing sewage in the event of a disaster, and has the function of receiving and storing sewage via the valve 5a. The disaster sewage tank 6 is installed on the roof of building B (Fig. 1) or in the intermediate floor machine room 9 (Fig. 2). It may be installed separately outside the intermediate floor machine room 9, or outdoors. In either installation location, the disaster sewage tank 6 is installed above the expected flood level. The disaster sewage tank 6 can be made of various materials, but it is preferable to use a lightweight, high-strength material such as FRP (fiber reinforced plastic).

[0020] The sewage manhole 7 is a cylindrical manhole installed outside the building B, and is connected to the vacuum drainage device 4 via the valve 5b. Here, "cylindrical" refers to a hollow shape such as a square tube or a cylinder, and is a concept that includes various cross-sectional shapes such as a circle or a polygon. Therefore, the sewage manhole 7 may have a rectangular or cubic shape. The sewage manhole 7 is also connected to the disaster sewage tank 6 via the valve 5c. The sewage manhole 7 is, for example, an inverted manhole, and has the function of preventing the pipes from clogging with sewage and smoothly draining sewage into the public sewer.

[0021] The general-purpose water tank 8 is a tank for storing water to be used in building B, and is installed on the roof of building B. The general-purpose water tank 8 is connected to the toilet 2 by piping (not shown), and supplies water for flushing the toilet 2.

[0022] (System operation: normal) The operation of the facility system 1 in normal times, that is, in times other than when a disaster occurs, will be described.

[0023] Normally, valves 5a and 5c are closed and valve 5b is open. When the toilet 2 is used, the vacuum drainage device 4 sucks wastewater from the toilet 2 in response to a user's instruction and pumps it toward the wastewater pit 7.

[0024] Furthermore, sewage from the gravity drainage urinal 20 flows into the main body 212 through the valve 211. When the amount of sewage flowing into the main body 212 reaches or exceeds a threshold value, the gravity / vacuum connection valve 21 closes the valve 211 and opens the valves 213 and 214, draining the sewage inside the main body 212 into the vacuum drain pipe 3. At that time, the vacuum drainage device 4 applies negative pressure to the vacuum drain pipe 3, causing the sewage to move inside the vacuum drain pipe 3. The vacuum drainage device 4 sucks the sewage from the vacuum drain pipe 3, and further pumps it towards the sewage manhole 7.

[0025] The pumped sewage reaches the sewage manhole 7 and is then discharged into the public sewer.

[0026] (System operation: during disasters) In the event of a disaster or the like, when the sewage manhole 7 is submerged by flooding or when the public sewer system becomes unavailable, an operation different from normal operation is performed. In the facility system 1, the valves 5b and 5c are closed and the valve 5a is opened instead.

[0027] When the toilet 2 is used, the vacuum drainage device 4 draws wastewater from the toilet 2 in response to a user's instruction and then pumps it out. The wastewater flows through a valve 5a and is stored in a disaster sewage tank 6.

[0028] When the flooding stops and the sewage manhole 7 becomes usable, the valve 5c is opened. The sewage stored in the disaster sewage tank 6 flows through the vacuum drain pipe 3 by gravity or a pump, and reaches the sewage manhole 7 through the valve 5c. The sewage is drained from the sewage manhole 7 into the public sewer.

[0029] <Second embodiment> In a high-rise building, a vacuum drainage device 4 may be installed every certain number of floors, for example, every 10th floor. For example, in the facility system 300 of Fig. 3, a vacuum drainage device 4 is installed every 7th floor, and sewage is sucked from the toilets 2 and gravity-drained urinals 20 on the upper floors.

[0030] As shown in FIG. 3, drainage may be performed in two systems in building B. In this example, the equipment system 300 forms two independent piping systems, a west system and an east system. Each independent piping system includes a toilet 2, a vacuum drain pipe 3, a gravity drain pipe 19, a gravity drain urinal 20, a gravity-vacuum connection valve 21, and a vacuum drainage device 4. The connection relationship between the gravity drain pipe 19, the gravity drain urinal 20, the gravity-vacuum connection valve 21, the vacuum drain pipe 3, and the vacuum drainage device 4 in each independent system is the same as in the first embodiment. Wastewater from the toilet 2 and gravity drain urinal 20 belonging to the west system is drained via the west system, and wastewater from the toilet 2 and gravity drain urinal 20 belonging to the east system is drained via the east system. In other words, wastewater from the toilet 2 and gravity drain urinal 20 belonging to either the west system or the east system is drained without passing through a different system, either the east system or the west system. The vacuum drainage device 4 is installed in each of the eastern and western systems, and sucks up and pumps out wastewater from each of the independent eastern and western systems.

[0031] In addition, various methods other than the above system are conceivable. For example, as shown in FIG. 4, the piping system may be separate for even-numbered floors and odd-numbered floors. In this case, each independent piping system includes a toilet 2, a vacuum drain pipe 3, a gravity drain pipe 19, a gravity drain urinal 20, a gravity-vacuum connection valve 21, and a vacuum drainage device 4. The connection relationship between the gravity drain pipe 19, the gravity drain urinal 20, the gravity-vacuum connection valve 21, the vacuum drain pipe 3, and the vacuum drainage device 4 in each independent system is the same as in the first embodiment. Therefore, wastewater from the toilet 2 and gravity drain urinal 20 belonging to the even-numbered floors is drained through the system installed on the even-numbered floors, and wastewater from the toilet 2 and gravity drain urinal 20 belonging to the odd-numbered floors is drained through the system installed on the odd-numbered floors. The vacuum drainage device 4 is installed in the odd-numbered floor system and the even-numbered floor system, and independently draws and pumps wastewater from each system.

[0032] By adopting a drainage method using multiple systems in this way, the maintenance and management of the facility system 1 can be facilitated. More specifically, even if one of the two vacuum drainage devices 4 is taken out of operation for inspection and management, the other system can still operate. Therefore, people in building B can use the toilet 2 and gravity drainage type urinal 20 without moving significantly between floors. The same is true if the vacuum drainage pipe 3 and equipment that make up one system are damaged due to an accident, disaster, etc., and since an operable system remains, the toilet 2 and gravity drainage type urinal 20 that can be used can remain in building B.

[0033] <Modification> As shown in the modified example of Fig. 5, a sewage tank 10 may be added to the facility system 1, 300 to increase the sewage storage capacity of the entire system. The sewage tank 10 is a tank for storing sewage, and is connected to a vacuum drainage device 4 via a vacuum drain pipe 3 and a valve 5d. The sewage tank 10 generally has a capacity capable of storing 2 to 3 hours' worth of sewage from a basement floor toilet, but may have a larger or smaller capacity depending on the conditions. In Fig. 5, the sewage tank 10 is buried underground, but it may also be installed above ground.

[0034] A pump 11 and a water level gauge 12 are installed inside the sewage tank 10, as shown in Fig. 5. The pump 11 has a function of pumping sewage to the sewage manhole 7 via the vacuum drain pipe 3. The water level gauge 12 measures the amount of water in the sewage tank 10.

[0035] As shown in Fig. 7(a), in a modified example, a pump 11 and a water level gauge 12 are also installed in the disaster sewage tank 6, making it possible to grasp the water level in the tank and to send sewage to the sewage manhole 7. If the disaster sewage tank 6 is installed underground, a vent pipe 13 is further installed to connect the inside of the disaster sewage tank 6 to the atmosphere. Although the pump 11 is installed in the manhole and each sewage tank in each figure, it may be installed outside the manhole or outside the sewage tank.

[0036] A water level gauge 12 may be installed in the sewage manhole 7 (FIG. 7(b)). By installing the water level gauge 12 in the manhole, the water level in the manhole, particularly when it is full, can be properly grasped.

[0037] (normal time) The operation of the facility systems 1 and 300 in the modified examples will be described. Under normal circumstances, the valves 5b and 5c are open and the valves 5a and 5d are closed. When the toilet 2 is used, wastewater is sucked by the vacuum drainage device 4 and then pumped to the wastewater basin 7. The wastewater then passes through the wastewater basin 7 and is drained into the public sewer system.

[0038] (In the event of a disaster) In the event of a disaster, the valves 5b and 5d are opened and the valves 5a and 5c are closed. When the toilet 2 or gravity drainage urinal 20 is used, the vacuum drainage device 4 sucks wastewater from the toilet 2 or the gravity-vacuum connection valve 21 and sends it to the wastewater tank 10.

[0039] The water level of the sewage tank 10 is constantly monitored by a water level gauge 12. When the sewage tank 10 is full, the valve 5a is opened and the valves 5b, 5c, and 5d are closed. In this way, the sewage from the toilet 2 is sent from the vacuum drainage device 4 to the disaster sewage tank 6 instead of the sewage tank 10 and stored there.

[0040] The sewage in the sewage tank 10 and the disaster sewage tank 6 can be drained into the sewage manhole 7 by the pump 11. Therefore, when the sewage manhole 7 and the public sewer become usable, and when sewage removal (next paragraph) is possible in the sewage manhole 7, the sewage in the sewage tank 10 and the disaster sewage tank 6 is drained into the sewage manhole 7 by the pump 11.

[0041] The wastewater and solids stored in the sewage tank 10 and the sewage manhole 7 can also be removed by a vacuum truck V, as shown in Figures 6 and 7(b). The water level can be monitored by the water level gauge 12, which prevents overflow from the sewage tank 6, the sewage tank 10, and the sewage manhole 7 in the event of a disaster, and allows the timing for wastewater treatment by the vacuum truck V to be determined.

[0042] Depending on the disaster, public sewage may be unavailable for a long period of time (in this example, more than seven days). However, even in this case, the equipment system 1, 300 can be used for a long period of time by storing wastewater in the sewage tank 10 and disaster sewage tank 6 as described above, and then removing the wastewater and solids using a vacuum truck V.

[0043] (Josei) In the embodiment, the water used to flush the toilet 2 is supplied from the water supply, but it may be supplied by other means.

[0044] One possible example is a method of using well water and rainwater as water sources to supply water to the toilet 2, as shown in Figures 8 and 9. Note that, for ease of understanding, Figures 8 and 9 only show the systems that supply water to the toilet 2 from well water and rainwater as water sources out of the equipment systems 1, 300, and omit other equipment and devices from the illustration.

[0045] 8 and 9, the facility system 1, 300 includes a well W, a pump P, a filtration device 15, a rainwater storage tank 17, and a roof drain 22. These devices and facilities are connected by a vacuum drain pipe 3 and a vertical pipe 18.

[0046] The top of the well W and the pump P are installed above the expected flood level, so they can be used even when flooded. In Figure 8, the filtration device 15 and rainwater storage tank 17 are installed in the machine room 9 on the middle floor, so they can be used even when flooded. If building B is designed to be usable even when flooded, these devices and equipment may be installed below the expected flood level as shown in Figure 9.

[0047] A pump P draws up well water from a well W and supplies it via a pipe 31. The well water is filtered by a filtration device 15 and stored in a general-purpose water tank 8.

[0048] Meanwhile, rainwater that falls on the roof is taken in by the roof drain 22 and supplied to the rainwater storage tank 17 via the upright pipe 18. The rainwater supplied from the rainwater storage tank 17 is filtered by the filtration device 15 and then stored in the general-purpose water tank 8.

[0049] The method and route of water supply from the general purpose water tank 8 to the toilet bowl 2 is the same as that explained in the embodiment and the like.

[0050] By adding such a water supply path, the facility system 1, 300 can supply water to the toilet 2 for an extended period of time even in the event that the mains water supply is unavailable.

[0051] In the above embodiment, the equipment connected to the gravity drain pipe 19 is the gravity drain urinal 20, but equipment other than the gravity drain urinal 20 may be connected to the gravity drain pipe 19. In other words, not only the gravity drain urinal 20 but also equipment for draining sewage or miscellaneous wastewater or a toilet can be connected to the gravity drain pipe 19. In this case, too, the sewage or miscellaneous wastewater that flows through the gravity drain pipe 19 passes through the gravity-vacuum connection valve 21. Furthermore, when a drainage amount equal to or greater than a threshold flows into the gravity-vacuum connection valve 21, the sewage or miscellaneous wastewater in the gravity-vacuum connection valve 21 is sucked up by the vacuum drainage device 4.

[0052] Furthermore, equipment other than the toilet 2 may be connected to the vacuum drain pipe 3. In other words, not only the toilet 2 but also toilet bowls and equipment for flushing miscellaneous water can be connected to the vacuum drain pipe 3.

[0053] <Effects> (Aspect 1) The facility system 1, 300 of the above embodiment or modified example includes a vacuum drainage device 4 that sucks in wastewater including at least one of sewage and miscellaneous wastewater from a gravity drainage urinal 20 (corresponding to a first facility) installed in a building, a gravity drainage pipe 19 (corresponding to a first drainage pipe) that is connected to the gravity drainage urinal 20 and drains the wastewater by gravity, a gravity-vacuum connection valve 21 connected to the gravity drainage pipe 19, and a vacuum drainage pipe 3 (corresponding to a second drainage pipe) that connects the gravity-vacuum connection valve 21 and the vacuum drainage device 4. The gravity-vacuum connection valve 21 drains the wastewater into the vacuum drainage pipe 3 when the amount of wastewater received from the gravity drainage pipe 19 becomes equal to or exceeds a threshold value.

[0054] According to the above configuration, it is possible to provide a facility system that uses two types of drainage, gravity and vacuum. The gravity / vacuum connection valve 21 controls drainage, so the vacuum drainage device 4 can be operated efficiently, which not only saves water during normal times, but also reduces water usage during disasters.

[0055] In addition, because the vacuum drainage device 4 is used, the amount of water used by the toilet 2 can be reduced to about 1 / 7 (about 1 liter of water per flush) compared to drainage using gravity. Not only can water be saved during normal times, but water usage can also be reduced during disasters, making the facility system 1, 300 able to handle situations where the water supply cannot be used. From the perspective of decarbonization, reducing the amount of wastewater can contribute to "reducing CO2 emissions" in urban infrastructure.

[0056] (Aspect 2) In aspect 1, the equipment system 1, 300 further includes a toilet 2 (corresponding to the second equipment), and the vacuum drainage pipe 3 further connects the toilet 2 to a vacuum drainage device 4, and the vacuum drainage device 4 further sucks wastewater including at least one of sewage and miscellaneous water from the toilet 2.

[0057] According to the above configuration, it is possible to provide a facility system that uses two types of drainage, gravity and vacuum. The gravity / vacuum connection valve 21 controls drainage, so the vacuum drainage device 4 can be operated efficiently, which not only saves water during normal times, but also reduces water usage during disasters.

[0058] (Embodiment 3) In embodiment 1 or 2, the vacuum drainage device 4 is installed above the expected flood level.

[0059] (Embodiment 4) In any of embodiments 1 to 3, the gravity / vacuum connection valve 21 is installed above the expected water level.

[0060] (Embodiment 5) In any of embodiments 1 to 4, the equipment system 1, 300 further includes a disaster sewage tank 6 for storing wastewater sent from the vacuum drainage device 4, and the disaster sewage tank 6 is installed above the first floor or on the roof of building B.

[0061] Conventional drainage by gravity required a sewage tank to be installed at the bottom of the underground structure, but in the above-mentioned configuration, the disaster sewage tank 6 is installed above the flood level, preventing it from being submerged. This allows the facility system 1, 300 to be used even in the event of a disaster. Furthermore, installing the disaster sewage tank 6 on an intermediate floor or on the rooftop allows the facility system 1, 300 to be used even in the event of flooding.

[0062] (Embodiment 6) In any of embodiments 1 to 5, the facility system 1, 300 includes a pump 11 that drains wastewater from the water tank.

[0063] (Embodiment 7) In any of embodiments 1 to 6, the equipment system 1, 300 further includes a water level gauge installed in the disaster sewage tank 6, and the pump 11 drains water according to the water level measured by the water level gauge 12.

[0064] In the above configuration, it is possible to drain water from the tank by the pump 11 without relying on gravity. By using the water level gauge 12, it is possible to drain water at an appropriate timing depending on the condition of the sewage tank 6 in the event of a disaster.

[0065] (Embodiment 8) In any of embodiments 1 to 7, the facility system 1, 300 further includes a wastewater tank 10 (corresponding to a reserve tank) for storing wastewater sucked from the vacuum drainage device 4.

[0066] By including the wastewater tank 10, the facility system 1, 300 can increase its capacity to store wastewater.

[0067] (Embodiment 9) In any of embodiments 1 to 8, the facility system 1, 300 can further include valves 5a-5d, making it easy to control the destination of wastewater discharge.

[0068] (Embodiment 10) In any of embodiments 1 to 9, the vacuum drainage device 4 is installed for each piping system in the building B.

[0069] With this configuration, even if the vacuum drainage device 4 becomes unavailable due to maintenance or a malfunction, drainage can be performed through a separate system. Therefore, the toilet 2 can be used in the building B.

[0070] The above embodiment is for the purpose of facilitating 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 the present invention also includes equivalents. In addition, the rights of the present invention may be legally resisted against abuse of rights that take advantage of a dominant position. [Explanation of symbols]

[0071] 1,300 Equipment System 2. Toilet 3 Piping 4 Vacuum drainage device 5a-5d valve 6 Disaster Sewage Tank 7 Sewage Manhole 8 General Purpose Water Tank 9. Machine room on middle floor 10. Sewage tank 11 Pump 12 Water level gauge 13 Ventilation pipe 15 Filtration equipment 17 Rainwater storage tank 18 Vertical pipe 19 Gravity drain pipe 20 Gravity drain urinal 21 Gravity / vacuum connection valve

Claims

1. A device for suctioning wastewater including at least one of sewage and miscellaneous water from a first facility installed in a building; a first drainage pipe connected to the first equipment and configured to drain wastewater by gravity; A connection portion connected to the first drain pipe; A second drain pipe connecting the connection portion and the device, The connection unit directs wastewater into the second drain pipe when the amount of wastewater received from the first drain pipe exceeds a threshold value.

2. Further comprising a second facility different from the first facility, the second facility being installed in the building; The second drain pipe further connects the second equipment and the connection part, The apparatus further draws wastewater including at least one of black water and gray water from the second facility. The facility system of claim 1 .

3. The facility system of claim 1 , wherein the device is installed above an expected flood level.

4. The facility system according to claim 1 or 2, wherein the connection portion is installed above an expected flood level.

5. Further comprising a water tank for storing wastewater sent from the device; The facility system according to claim 1 , wherein the water tank is installed above the first floor or on the roof of the building.

6. The facility system according to claim 5 , further comprising a pump for draining water from the water tank.

7. The water tank further includes a water level meter installed in the water tank. The facility system according to claim 6 , wherein the pump performs drainage in accordance with the water level measured by the water level gauge.

8. The facility system according to claim 5 , further comprising a reserve water tank for storing wastewater sucked from the device.

9. The facility system of claim 8, further comprising one or more valves for controlling drainage from the device to the water tank and the auxiliary water tank.

10. The facility system according to claim 9 , wherein the device is installed for each piping system in the building.

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