JPH09296494A - Wastewater recycling system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system in which a device can be simplified to improve water saving effect. SOLUTION: Miscellaneous wastewater from a washstand 4 and kitchen 5 is discharged under vacuum through a vacuum station 10, passed through a miscellaneous wastewater treating tank 12, stored in a recycled wastewater tank 15 and passed through a recycled wastewater conduit 17 to feed the treated wastewater to a human body noncontact sport, as washing water for closets 2, 3, through a miscellaneous wastewater discharge line 9, while rainwater is passed through a rainwater treating tank 21 to treat it and stored in a treated water tank 24 to feed it through a treated water conduit 26 to a human body contact spot such as the washstand 4, a private part washing device 2a through a rainwater conduit 20 which is provided separately from the line 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gray water system capable of efficiently recycling waste water.

[0002]

2. Description of the Related Art Conventionally, there is a system as shown in FIG. 2, for example, as a gray water system, and in FIG. 2, a bath 52, a washroom 53, a washing machine 54, a kitchen 55 on each floor in a building 50. Wastewater discharged from the tank is purified in a septic tank 56 provided underground, and the treated water is stored in a medium water tank 57 provided on the roof, and the treated water is washed from the medium water tank 57 to the toilets 51, 51 on each floor. Supply as water, toilet 5
The sewage discharged from 1, 51 is a system that is discharged to the sewer 58, but in this conventional system, it is necessary to install the septic tank 56 at a position considerably lower than the water supply equipment such as underground. A space for installing this septic tank 56 is required, a machine room such as a septic tank must be installed in the basement, and the treated water is reused only as toilet wash water. However, there was a problem that you could only expect about 20%.

[0003]

The present invention has been devised in view of the above-mentioned problems of the prior art, and it is not necessary to install a large septic tank underground or the like, and the water saving rate is greatly improved by a simple structure. With the purpose of not providing a sewage system that can be used, the first gist of it is that after the sewage discharged from a handwasher, a kitchen, etc. is vacuumed through a vacuum station and processed through a sewage treatment tank, After collecting rainwater through a rainwater treatment tank after collecting it in a medium water tank and supplying it to the non-human contact scene as washing water for toilets, urinals, etc. through the medium water pipeline, collect it in the treated water tank, That is, a separate rainwater route was provided through the treated water pipeline, which supplies water to the human body when it comes in contact with a toilet bowl, a toilet bowl, or a local toilet. Also,
The second gist is that the rainwater can be replenished into the intermediate water tank of the miscellaneous drainage route.

[0004]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic piping configuration diagram of a gray water system of the present example. A vacuum drainage type vacuum toilet 2 is provided in a building 1, and the cleaning water is jetted to the user's local area in this vacuum toilet 2. A local cleaning device 2a for performing cleaning is additionally provided. In addition, a urinal 3 is installed in the building 1, and a handwasher 4 and a kitchen 5 are further installed so that the wastewater discharged from the vacuum toilet 2 and the urinal 3 can be discharged through a wastewater conduit 6. Is constructed in this wastewater pipeline 6
Is provided with a sewage vacuum station 7, a vacuum state is internally generated through an ejector in the sewage vacuum station 7, and the inside of the sewage pipe line 6 is maintained in a vacuum, and the vacuum toilet 2 and The sewage from the toilet bowl 3 can be strongly sucked into the sewage conduit 6. The sewage vacuum station 7 is connected to the vacuum sewage station 8 so that the sewage is discharged from the vacuum sewage station 8 to the sewage.

The sewage discharged from the hand-washing device 4 and the kitchen 5 is sucked into the sewage drainage line 9, and the sewage drainage vacuum station 10 is also connected to the sewage drainage line 9. A vacuum is generated by the ejector in the sewage drainage vacuum station 10 to remove the sewage drainage from the sewage drainage line 9
It is structured so that it can be strongly sucked inside. Further, the sewage collected in the sewage vacuum station 10 is introduced into the sewage treatment tank 12 through the pump 11 and is processed through the filter 12a in the sewage treatment tank 12, and the intermediate water tank is passed through the pump 14. 15 is configured to be stored in the medium water tank 15, and the medium water stored in the medium water tank 15 is configured to be supplied as cleaning water to the vacuum toilet 2 and the urinal 3 through a medium water pipe 17. ing.

Accordingly, the slightly dirty dirty wastewater discharged from the handwasher 4 and the kitchen 5 is the dirty wastewater pipeline 9, the dirty waste vacuum station 10, the dirty wastewater treatment tank 12, and the intermediate water tank 1.
5, It is reused as washing water for the vacuum toilet 2 and the urinal 3 through the miscellaneous drainage route passing through the middle water pipe line 17. It should be noted that valves 13 and 13 are provided in the pipe line connecting the pump 11 and the gray water treatment tank 12, and the valves 13 and 13 are opened when the gray water is overflowed in the gray water treatment tank 12 and overflow. The waste water is discharged to the vacuum sewer station 8 side.

Further, a rainwater inflow pipe 18 for collecting rainwater is vertically provided in the building 1, and a rainwater storage tank 19 for collecting rainwater is provided in the basement of the building 1 and the like.
The rainwater stored in 9 is configured to flow into the rainwater pipe 20 and flow into the rainwater treatment tank 21 by the operation of the submersible pump installed in the rainwater storage tank 19. A filter membrane 21a is provided inside 21. After the rainwater is purified through the filter membrane 21a, the pump 22 is operated to collect the rainwater treated through the communication conduit 23 in the treated water tank 24. The treated water stored in the treated water tank 24 is configured to be supplied to the local cleaning device 2a of the vacuum toilet 2 and the hand washing device 4 through the treated water pipeline 26 by operating the pump 25. The relatively clean rainwater is stored in the rainwater storage tank 19,
The rainwater conduit 20, the rainwater treatment tank 21, the communication conduit 23, the treated water tank 24, and the treated water conduit 26 are supplied to the local cleaning device 2a and the handwasher 4 through the rainwater conduit. The passing rainwater is used by being supplied to the human body contact scene where the water of the local cleaning device 2a or the hand washing device 4 directly contacts the human body. That is, the sewage drained through the sewage drainage route described above is reused as washing water for the toilet bowls 2 and 3 that are used without contact with the human body. Is what is used.

In the system of this embodiment, the gray water treatment tank 12, the gray water vacuum station 10, the waste water vacuum station 7, and the rain water treatment tank 21 can be installed in a separate building P, and like the conventional septic tank, It is not necessary to install it in the basement, and it is not necessary to install it in a position lower than the toilet bowl 4, the toilet bowls 2 and 3, and it can be installed in the upper floor of the building 1 higher than it. In addition, since the small vacuum stations 7 and 10 and the processing tanks 12 and 21 can be used in this example without using a large-sized septic tank as in the prior art, the entire apparatus can be simplified and downsized. is there. In addition, in this example, the water to be reused is supplied separately to the human body contact scene and the human body non-contact scene, and the relatively clean rainwater is stored in the hand washer or the local cleaning device which may come into contact with the human body. Contaminated water such as sewage supplied to the human body is effectively used as washing water for toilet bowls 2 and 3 that do not come into direct contact with the human body. These sewage and rainwater are treated separately. By doing so, it is possible to efficiently treat and reuse the water, and the water saving rate can be increased to about 80%.

In this example, as shown in FIG. 1, the rainwater passing through the rainwater conduit 20 is treated with the rainwater treatment tank 21 as described above.
It is configured so that it can also be made to flow into the makeup water pipe line 31 through the filter 30, and the makeup water pipe line 31 is provided in the gray water tank 1 in the miscellaneous drainage route.
5 and is configured so that a part of rainwater can be replenished to the intermediate water tank 15 to appropriately increase the amount of flush water to the toilet bowls 2, 3.

Further, in this example, a cleaning tank 27 is provided at the upstream end of the dirty water pipe 6 via a valve 28. The cleaning tank 27 has a capacity of, for example, about 5 to 10 liters. The treated water of the rainwater is configured to flow from the treated water pipeline 26 into the inside of the cleaning tank 27 via a built-in ball tap, and the treated water is always stored in the cleaning tank 27 in a substantially full state by the ball tap. Is configured.

The valve 28 is connected to a timer 29 so that the valve 28 can be opened and closed at regular intervals via the timer 29. For example, once a day at 11 o'clock, the valve 28 can be opened via the timer 29. It can be configured to be opened, and when the valve 28 is opened, the water stored in the cleaning tank 27 flows in at a dash because the inside of the dirty water conduit 6 is in a vacuum state, and the dirty water conduit 6 is opened. The inner wall surface of the wastewater pipeline 6 is strongly washed and repeatedly sucked into the vacuum station 7 while repeatedly colliding with the inner wall surface of the wastewater. The cleaning is performed automatically to prevent clogging of the dirty water line 6. That is, in this example, since the insides of the wastewater pipe 6 and the miscellaneous drainage pipe 9 are vacuum drainage pipes which are always in a vacuum state, solid substances can be satisfactorily sucked with a small amount of water by a strong suction force. Although it is possible, since the concentration of wastewater is high, there is also a drawback that scales etc. easily stick to the inside of the pipe, so it is possible to automatically clean the inside of the pipe in this way and prevent clogging. It is configured as follows.

In this example, the cleaning tank 27 is used for cleaning the dirty water pipe 6, but the cleaning tank 27 is also provided at the upstream end of the miscellaneous drainage pipe 9 to regularly clean the cleaning tank 2.
It is also possible to make cleaning water flow into the miscellaneous drainage pipe line 9 from 7 to automatically clean the inside of the miscellaneous drainage pipe 9. Although the treated water of the rainwater is introduced into the cleaning tank 27 in this example, the cleaning tank 27 may be configured to store the cleaning liquid in addition to the water. Further, in this example, the timer 29 is used to periodically flow, but instead of the timer 29, a controller with an integrating function or the like is provided, and the valve 28 is opened periodically via the controller or the like. You may.

[0013]

EFFECTS OF THE INVENTION The gray water system of the present invention is designed to drain gray water discharged from a handwasher, a kitchen, etc. through a vacuum station into a gray water treatment tank, and then collect the gray water in a gray water tank. A sewage drainage route that supplies water to the human body non-contact as wash water for urinals, urinals, etc. By separately providing a rainwater path for supplying to the human body such as a toilet bowl local cleaning device,
A separate wastewater drainage route for treating sewage and a rainwater drainage route for treating rainwater are provided separately. In the rainwater route, relatively clean rainwater can be reused in a hand-washing machine or a local cleaning device that may come into contact with the human body, and can be divided into a human body contact scene and a human body non-contact scene. Therefore, it is possible to efficiently process and reuse, simplify the device, and improve the water saving effect.

Further, since the rainwater can be replenished into the medium water tank of the miscellaneous drainage route, the rainwater can be properly replenished into the medium water tank without running out of flush water for the toilet bowl. , Has the effect of improving the system function.

[Brief description of drawings]

FIG. 1 is a schematic piping configuration diagram of a gray water system.

FIG. 2 is a schematic configuration diagram of a conventional gray water system.

[Explanation of symbols]

 1 Building 2 Vacuum Toilet 2a Local Cleaning Device 3 Urinal 4 Hand Washer 5 Kitchen 6 Sewage Pipeline 7 Sewage Vacuum Station 8 Vacuum Sewage Station 9 Wastewater Drainage Station 10 Wastewater Vacuum Station 12 Wastewater Treatment Tank 13 Valve 15 Medium Water Tank 17 Medium Water Pipeline 19 Rainwater Storage Tank 20 Rainwater Pipeline 21 Rainwater Treatment Tank 24 Treated Water Tank 26 Treated Water Pipeline 27 Wash Tank 28 Valve 29 Timer 30 Filter 31 Makeup Water Pipeline

Claims (2)

[Claims] 1. A urinal or urinal through which the sewage discharged from a hand-washing device, a kitchen, etc. is vacuum-drained through a vacuum station and treated through a sewage treatment tank, and then stored in a middle water tank and through a middle water pipe. Human wastewater such as wash water, etc., which is supplied to the non-human contact scene, and rainwater is processed through a rainwater treatment tank and then stored in the treated water tank and passed through the treated water pipeline to wash the toilet bowl, toilet bowl, etc. A medium water system characterized in that a rainwater route for supplying to the contact scene is provided separately. 2. The graywater system according to claim 1, wherein the rainwater can be supplied to the graywater tank of the miscellaneous drainage path.