JP4526511B2 - Circulating toilet - Google Patents

Description

  The present invention relates to a circulating toilet in which sewage is purified by a plurality of biological treatment tanks disposed below the toilet, and the purified treated water is sent to the toilet as cleaning water and reused.

  Circulating toilets are increasingly used in place of conventional mobile toilets as outdoor permanent and temporary toilets in parks, event venues, campsites, and the like. In this type of circulation toilet, cleaning water once used for toilet flushing is cleaned by biological treatment, etc., and then used again as cleaning water, so it is not necessary to pump out the amount of water added to the system as cleaning water. It has the feature of easy management.

  That is, after replenishing clean water in the treatment tank and starting to use, it is not necessary to replenish clean water from the outside as a general flush toilet in principle. However, as the number of uses increases, the amount of urine is accumulated and added, so the total amount of sewage increases. According to the method of pumping this surplus water with, for example, a vacuum car, it is uneconomical due to the use of a vacuum car and processing charges. It is. On the other hand, since the circulation toilet is not a septic tank, it is prohibited to discharge it.

  In the method of treating sewage with soil, surplus water penetrates into the soil and evaporates to the atmosphere through planting on the soil surface and soil. In this case, a site dedicated to soil treatment is required. There is a risk of excess water flowing out of the soil.

  Furthermore, as such a toilet apparatus, for example, Patent Document 1 discloses that a drain pipe having a drain valve is provided at a lower portion of a toilet tank in which a toilet bowl is installed. According to this, it has a sludge decomposing cylinder that is open to the drain pipe and is buried in the ground only. The solid content is decomposed by microorganisms in the toilet and digested into sludge once a year. Alternatively, the drain valve is opened about twice to penetrate into the ground.

Further, Patent Document 2 is provided with a mechanism for solid-liquid separation of stool and urine excreted in a toilet bowl, and washing water is guided to a stool treatment tank by a pumping mechanism and fermented and decomposed by microorganisms. It is disclosed that water is led to a recycling tank, and toilets are washed using urine and toilet flushing water in the recycling tank.
Japanese Patent Laid-Open No. 11-47034 (page 3, FIG. 1) Japanese Patent Laid-Open No. 11-131552 (page 4-6, FIG. 1)

  However, in Patent Document 1, surplus water is directly infiltrated into the soil. However, as described above, a site dedicated to soil treatment is necessary, and there is a concern about contamination of soil and groundwater. As a countermeasure, for example, as shown in FIG. 5, a biological treatment tank of the toilet apparatus 100 is disposed in the basement of the toilet room 40, and treated water is supplied through a hose 44 by an underwater pump 41 provided in the surplus water tank 16. The thing supplied to the field 42 and utilized for cultivation of the vegetables 43 can be considered.

However, even in this case, it is necessary to provide a sheet 45 or the like to prevent permeation at an appropriate location in the soil, and surplus water may flow out of the dedicated soil during heavy rain.
Further, in Patent Document 2, an overflow tank / transpiration tank is connected to the recycling tank, and the treated water overflowing the recycling tank flows into the overflow tank / transpiration tank and is naturally evaporated. Evaporation efficiency is poor due to natural evaporation. For this reason, there is a possibility that surplus water flows out.

  The present invention has been made in order to solve such a problem. The purpose of the present invention is to circulate the treatment water in the surplus water tank by aeration, forcibly evaporate it and dissipate it to the atmosphere to reduce maintenance. To provide a toilet.

In order to achieve the object, the invention according to claim 1
A circulatory toilet in which a sewage treatment tank having a plurality of biological treatment tanks is disposed below the toilet bowl, the sewage treatment tank purifies the sewage, circulates the treated water after purification, and supplies the sewage water to the toilet as wash water In
An excess water tank that is disposed downstream of the biological treatment tank and stores treated water overflowing from the biological treatment tank;
In order to evaporate aerated treated water of the excess water tank, a float which floats on the water surface of the surplus water tank is fixedly supported on the underwater spaced any length between 40~400mm to the float, a number An aeration tube having a hole formed therein ; and
And a blower for sending air to the aeration evaporation means.

The invention according to claim 2 is the circulation toilet according to claim 1 ,
A sensor for detecting the water level of the surplus water tank;
Characterized in that said sensor is provided with, and alarm means for sounding an alarm by detecting a predetermined value or more water level of the surplus water tank.

  According to the present invention, the management of surplus water treatment is halved by aerating and forcing the treated water in the surplus water tank to evaporate and dissipate it to the atmosphere by the aeration evaporation means arranged floating in the surplus water tank. Therefore, maintenance and cost can be reduced.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows the overall configuration of a circulating toilet 100 according to the present embodiment. In this figure, a circulating toilet 100 is provided with a sewage treatment tank 2 comprising a plurality of biological treatment tanks (3-7) and an excess water tank 16 below a flush toilet 1. The system which purifies the sewage water and circulates the treated water after the purification as washing water and feeds it to the toilet 1 is adopted.

  In this embodiment, the sewage treatment tank 2 has a plurality of biological treatment tanks (3 to 7), and the sewage is sequentially sent to the downstream side for purification in the plurality of biological treatment tanks (3 to 7). . That is, the sewage treatment tank 2 includes an anaerobic sedimentation separation tank 3 that separates the filth and washing water from the toilet 1 into solid and floating substances, and a contact aeration tank 4 that biologically treats intermediate water containing floating substances and the like. A precipitation separation tank 5 for separating the precipitate from the intermediate water after biological treatment, an ozone contact tank 6 for contacting ozone gas with the intermediate water after the precipitation separation, and an ozone decomposition tank 7 for decomposing unnecessary ozone gas in the water, have.

  In the tank of the contact aeration tank 4, a filter medium 8 having an uneven surface so that microorganisms can easily settle, and a diffuser pipe 9 for sending air to the filter medium 8 through a pipe 11 are arranged. Air is sent from the blower 10 to the air diffuser 9, and the air rises as fine bubbles from a large number of holes (not shown) formed in the air diffuser 9 from below the filter medium 8. As the aerobic treatment progresses, the water quality becomes even better.

  Further, in the tank of the ozone contact tank 6, an air diffuser 12 having a large number of holes (not shown) is disposed. High-concentration ozone gas produced by the ozone generator 13 is ejected as bubbles from a large number of holes through the pipe 14 into the air diffuser 12. And when the water in a tank and ozone fully contact, treated water will be deodorized and decolored and the water in a tank will be further purified.

  In the ozone decomposition tank 7, after unnecessary ozone gas in the clean water is decomposed, the clean water is used for washing the toilet 1 by the pump 30 through the pipe 31. Note that an ozone removing device 32 for removing excess ozone generated from the ozone contact tank 6 is provided at the upper part of the ozone contact tank 6 and diffused into the atmosphere after ozone removal.

  Here, in this Embodiment, the surplus water tank 16 which is arrange | positioned in the downstream of several biological treatment tanks (3-7), and stores the treated water overflowing from this several biological treatment tank (3-7), In order to aerate and evaporate the treated water in the surplus water tank 16, an aeration evaporating means 25 arranged floating in the surplus water tank 16 and a blower 20 for sending air to the aeration evaporating means 25 are provided.

  As shown in FIG. 2, the aeration and evaporation means 25 includes a float 18 that floats on the surface of the surplus water tank 16, and an aeration that is fixedly supported by the float 18 below the surface of the water via a support 19 at a predetermined interval. And a tube 17. A large number of holes (not shown) are formed in the aeration pipe 17, and the air fed into the aeration pipe 17 from the blower 20 described above is jetted into the surplus water tank 16 as bubbles from the numerous holes. The

  As the float 18, for example, a polystyrene, a tire tube, or a synthetic resin such as vinyl chloride is used. Further, the distance H between the centers of the float 18 and the aeration tube 17 is constant. This distance H is related to the ability to aerate and evaporate the treated water, and is set to 40 to 400 mm, for example. In this embodiment, it is more preferably set to 50 to 200 mm. In addition, the flexible hose which can be expanded-contracted is used for the ventilation pipe | tube 24 which sends in air from the blower 20.

  With the above-described configuration, when the water level of the ozonolysis tank 7 rises as the excess water increases and the water overflows and overflows from the overflow surface 15, this water is stored in the excess water tank 16. Even if the water level in the excess water tank 16 stored in this way is zero at the start of use, it rises as it is used.

  In this embodiment, since the float 18 and the aeration pipe 17 are fixedly supported by the support 19, the distance H from the water surface to the aeration pipe 17 is always constant regardless of the fluctuation of the water level in the surplus water tank 16. . For this reason, a large amount of air can be sent into the surplus water tank 16 from the blower 20, and a large amount of treated water in the surplus water tank 16 can be evaporated to lower the water level. Thereby, the water level in the surplus water tank 16 can be automatically adjusted to reduce maintenance.

  On the other hand, if the aeration pipe 17 is fixed to the bottom of the surplus water tank 16, the distance from the water surface to the aeration pipe 17 varies depending on the water level. For this reason, when the water level is high, only a small amount of air can be sent into the surplus water tank 16 due to the performance of the blower 20 compared to when the water level is low, and the amount of evaporation from the surplus water tank 16 is also reduced. Thereby, the water level in the surplus water tank 16 may rise abnormally, and there is a possibility that the need for pumping or the like may arise.

  By the way, the surplus water tank 16 is provided with an electrode 21 (or a float switch) for monitoring the water level, and the water level in the surplus water tank 16 can be detected by this electrode 21. That is, in this embodiment, the electrode 21 has three electrode rods 21a, 21b, and 21c, and when the water level in the surplus water tank 16 exceeds points A, B, and C, respectively, from the lowest level. A detection signal is sent to the control circuit 22.

The control circuit 22 receives this detection signal and controls the blower 20 and the exhaust fan 23 in conjunction with each other according to the water level in the surplus water tank 16.
Next, the effect | action of this embodiment is demonstrated based on FIGS.

  FIG. 2 shows a state when the water level in the surplus water tank 16 is low. That is, the water level in the surplus water tank 16 starts from zero, and the blower 20 and the exhaust fan 23 are not driven and stopped by the control circuit 22 until the water level reaches the intermediate point B and the electrode rod 21b detects this. Keeps the state.

  Next, FIG. 3 shows a state when the water level in the surplus water tank 16 becomes high. That is, when the water level in the surplus water tank 16 reaches point B, the electrode rod 21b detects this, and the blower 20 and the exhaust fan 23 are driven by the control circuit 22 based on this detection signal. In this way, air is sent from the blower 20 toward the aeration pipe 17, and the air is jetted into the surplus water tank 16 to become bubbles, and the treated water is aerated and evaporated. At the same time, evaporated gas is discharged to the outside by the exhaust fan 23.

In this way, when the treated water evaporates and the water level in the surplus water tank 16 drops to the point A, the blower 20 and the exhaust fan 23 are stopped from operating, and the same operation as described above is repeated thereafter.
Furthermore, as shown in FIG. 4, it is assumed that the number of times the toilet is used exceeds the initially assumed range, the evaporation by the aeration evaporation means 25 cannot catch up, and the water level in the surplus water tank 16 exceeds the C point. Then, the electrode rod 21c detects this, and the alarm lamp 27 is turned on via the control circuit 22 to inform the manager of the necessity for pumping. An alarm sound may be emitted instead of the alarm lamp 27.

It is a figure which shows the whole structure of the circulation type toilet in this Embodiment. It is a figure which shows the detail of a surplus water tank (at the time of a low water level). It is a figure which shows the detail of a surplus water tank (at the time of a high water level). It is a figure which shows the detail of a surplus water tank (at the time of an abnormally high water level). It is a figure which shows the prior art example of the water treatment in a toilet apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Toilet 2 Sewage treatment tank 3 Precipitation separation tank 4 Contact aeration tank 5 Precipitation separation tank 6 Ozone contact tank 7 Ozone decomposition tank 8 Filter medium 9 Air diffuser pipe 10 Blower 11 Pipe 12 Air diffuser pipe 13 Ozone generator 14 Pipe 15 Overflow surface 16 Surplus Water tank 17 Aeration pipe 18 Float 19 Support tool 20 Blower 21 Electrode 21a Electrode bar 21b Electrode bar 21c Electrode bar 22 Control circuit 23 Exhaust fan 24 Blow pipe 25 Aeration evaporation means 27 Alarm lamp 30 Pump 31 Pipe 32 Ozone removal device 40 Toilet room

Claims (2)

A circulatory toilet in which a sewage treatment tank having a plurality of biological treatment tanks is disposed below the toilet bowl, the sewage treatment tank purifies the sewage, circulates the treated water after purification, and supplies the sewage water to the toilet as wash water In
An excess water tank that is disposed downstream of the biological treatment tank and stores treated water overflowing from the biological treatment tank;
In order to evaporate aerated treated water of the excess water tank, a float which floats on the water surface of the surplus water tank is fixedly supported on the underwater spaced any length between 40~400mm to the float, a number An aeration tube having a hole formed therein ; and
A blower for sending air to the aeration evaporation means,
A circulating toilet characterized by that. A sensor for detecting the water level of the surplus water tank;
Alarm means for issuing an alarm when the sensor detects a water level above a predetermined value in the surplus water tank,
The circulating toilet according to claim 1.