JPH1121972A - Movable toilet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a movable toilet which can be cleanly and comfortably used and in which maintenance and management such as urine and fecal waste processing are easy by processing and cleaning urine and feces transferred from an urine feces tank, and using water processed by a cleaning tank in a water closet as cleaning water. SOLUTION: Urine and feces which have flowed in a first processing tank 21 from an urine and feces receiving inlet are decomposed and processed by anaerobic bacteria to be overflowed. With regard to the urine and feces flowed in a second processing tank 22, organic substance in the urine and feces is oxidized and decomposed by air aeration and aerobic bacteria to be overflowed further, the organic substance remaining in sewage water flowed in a third processing tank 24 is completely oxidized and decomposed by the air aeration and aerobic bacteria, and the sewage water becomes clean processed water. Processed water in a storage tank 25 is pumped up by a circulation pump 45, deodorized in an activated carbon unit 46, a part of decolorized processed water is pumped by a washing pump 33, and transmitted to a water closet 11 as its washing water. The remaining processed water is returned to the storage tank 25 again.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable toilet which can be used at a required place when needed.

[0002]

2. Description of the Related Art Conventionally, temporary restrooms are provided in disaster areas, event venues, construction sites, military training areas, and the like. Also, resorts such as beaches and ski resorts may have public toilets only during the season. These toilets are usually of the pumping type, are made small so that they can be transported, and are transported to disaster areas or resorts by trucks or the like as needed, and installed in vacant lots.

[0003]

However, since such a conventional toilet has a human waste tank for storing human waste, it is easy to feel unsanitary, such as smell and dirty. In addition, there is also a problem that if the human waste cannot be frequently collected, the human waste overflows from the human waste tank.

The present invention has been made in view of such circumstances, and has as its object to provide a portable toilet which is easy to move, can be used cleanly and comfortably, and is easy to maintain such as human waste disposal. Is to provide.

[0005]

Means for Solving the Problems To achieve the above object, the invention according to claim 1 of the present invention comprises a flush toilet, a human waste tank for storing human waste discharged from the flush toilet, and a human waste tank. A septic tank that treats human waste transferred from
A circulation pump for transferring the treated water treated in the septic tank to the flush toilet as washing water is mounted on a vehicle.

[0006] With this configuration, the toilet can be easily moved to a required place when needed. In addition, since it is a flush toilet, it can be used cleanly and comfortably. In addition, since the wastewater is treated in the septic tank, it is not necessary to collect human waste. Further, since the flush water of the flush toilet is covered by the treated water collected from the septic tank, the water supply can be reduced.

The invention according to a second aspect is characterized in that, in addition to the first aspect, a microorganism for treating human waste is contained in the septic tank. With this configuration, there is no need to put a chemical for treating human waste into the septic tank.

According to a third aspect of the present invention, in addition to the first or second aspect, the sewage tank is provided at a position lower than a flush toilet. With this configuration, the human waste discharged from the flush toilet can be stored in the human waste tank by gravity.

According to a fourth aspect of the present invention, in addition to the third aspect, a liquid level switch for detecting the upper and lower limit of the liquid level in the human waste tank is provided. And a waste pump that is started and stopped by a switch signal.

[0010] With this configuration, the waste pump starts when the liquid level of the human waste reaches the upper limit, transfers the human waste to the septic tank, and then stops when the waste liquid reaches the lower limit, and thereafter, stops. Keeps a stop until it reaches the upper limit.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 4 show an embodiment of the mobile toilet according to the present invention, FIG. 1 is a perspective view showing a part of the mobile toilet, FIG. 2 is a sectional view, and FIG. FIG. 4 is a system diagram of the right half similarly.

The mobile toilet of this embodiment is mounted on a vehicle such as a trailer 4 as shown in FIG. The trailer 4 is towed by a towing vehicle (not shown) (disposed on the left side in FIG. 1). This mobile toilet has three main parts,
That is, it is divided into a toilet booth 1, a septic tank room 2, and a machine room 3.

The toilet booth 1 is located at the front of the trailer 4 and has a stair 41 on a side surface thereof. In the toilet booth 1, a flush toilet 11 and a handwasher 17 are installed. As will be described later, the water treated in the septic tank 20 is reused in the flush toilet 11 as the flush water. In the hand washer 17, water stored in the water supply tank 15 is used.

A drain pipe 18 and a human waste tank 12 are provided below the floor of the trailer 4 which is lower than the flush toilet 11 and the hand-washing machine 17. The human waste tank 12 is a flush toilet 1
It is for temporarily storing the human waste discharged from 1 and the sewage discharged from the hand washing machine 17. The sewage pipe 18 connects the flush toilet 11 and the hand-washing machine 17 to the sewage tub 12, and is provided to be inclined so that the sewage tub 12 side is lowered. As a result, the sewage discharged from the flush toilet 11 and the hand-washing device 17 is temporarily stored in the human waste tank 12 by the natural flow through the sewage pipe 18.

A waste pump 14 with a cutter is installed in the waste tank 12. Cutters are effective for finely cutting solids such as paper in human waste. Further, the discharge port of the waste pump 14 and the human waste receiving port of the septic tank 20 are connected by a second drain pipe 19. By operating the waste pump 14, the human waste in the human waste tank 12 is transferred to the purification tank 20 through the second drain pipe 19.

In the human waste tank 12, in addition to the waste pump 14, a liquid level switch 13 for detecting the upper and lower liquid level of the human waste is provided. And this liquid level switch 1
The waste pump 14 is started or stopped by the signal 3. That is, when the liquid level switch 13 detects the upper limit of the liquid level of the human waste, the waste pump 14 is started, and thereafter, when the liquid level is lowered and the lower limit is detected, the waste pump 14 is stopped. After that, the waste pump 14 is kept stopped until the liquid level switch 13 detects the upper limit.

The septic tank chamber 2 is provided at the rear of the trailer 4, and a septic tank 20 is installed therein. This septic tank 20
Are the primary treatment tank 21, the secondary treatment tank 22, the sedimentation tank 2
3. The tertiary treatment tank 24 and the water storage tank 25 are sequentially provided integrally.

The first treatment tank 21 has a partition plate provided therein, and the partition plate allows the first chamber 21a and the second chamber 2 to be separated from each other.
1b. Then, an excrement receiving port is provided above the first chamber 21a. Also, the first chamber 2 of the partition plate
Tubular bodies are provided vertically on the 1a side and the second chamber 21b side, respectively, and a flow path connecting the two in the horizontal direction is provided above these tubular bodies.

The first chamber 21a and the second chamber 21b contain anaerobic microorganisms (anaerobic bacteria), respectively. This anaerobic bacterium has a function of decomposing organic substances in human waste into harmless substances such as methane, carbon dioxide, and hydrogen.

At the time of use, the first chamber 21a is inserted through the human waste receiving port.
The human waste that has flowed into the first chamber is first decomposed by the anaerobic bacteria in the first chamber 21a. Then, the liquid enters the second chamber 21b by overflow through the flow path, and
It is further decomposed by the anaerobic bacteria in the chamber 21b, and the purification proceeds.

The second chamber 21b and the next secondary processing tank 22
Is provided between them. A short tubular body is provided vertically on the side of the second chamber 21b above the partition, and a horizontal flow path is connected to the upper part of the tubular body and the opening of the partition.

In the second processing tank 22, a laminated plate 22a is provided.
And the like. As the laminated plate 22a, for example, a laminate in which a number of vertically formed plastic molded plates are laminated in the horizontal direction is used. A diffuser such as a diffuser tube 22b is provided below the laminated plate 22a. As the air diffuser tube 22b, for example, a container having both ends closed and a large number of small holes formed in the circumferential surface thereof is used, and an air blower 34 installed in the machine room 3 is used. Are connected by a pipe.

After being filled with water, the second processing tank 22 is filled with aerobic microorganisms (aerobic bacteria). The aerobic bacteria are fixed on the laminated plate 22a, and when air is aerated, have the function of oxidatively decomposing organic substances in human waste into harmless carbon dioxide gas. Here, "lively fixed" means fixed in a living state.

In use, the human waste which has flowed into the secondary treatment tank 22 by overflow through the conduit of the partition wall descends sequentially between the laminated plates 22a. At this time, air is sent from the air blower 34 to the diffuser tube 22b, and bubbles are released from the diffuser tube 22b. These bubbles form the laminate 22
a, and the laminated plate 22a is aerated with air.
Then, the organic matter in the human waste is oxidatively decomposed by the aerobic bacteria, and the human waste becomes in a state of more dirty water.

A partition is also provided between the secondary processing tank 22 and the next settling tank 23, and an opening is provided below the partition. The sewage flowing into the sedimentation tank 23 from the second treatment tank 22 through the opening portion is settled in the sedimentation tank 23 while floating substances therein are precipitated and removed.

A partition is also provided between the sedimentation tank 23 and the next tertiary treatment tank 24, and an opening is provided above the partition. The third treatment tank 24 is filled with a filler such as a porous ceramic ball 24a. Also,
A diffuser tube 24b is provided below the ceramic ball 24a.
A diffuser such as the one is installed. This air diffuser 24b is the second
This is the same as that of the next processing tank 22, and this is connected to an air discharge port of an air blower 34 installed in the machine room 3 by a pipe.

After filling the third treatment tank 24 with water, aerobic microorganisms (aerobic bacteria) are introduced. The aerobic bacteria are fixed on the ceramic balls 24a, and when air is aerated as in the case of the second treatment tank 22, organic substances in the wastewater are oxidized and decomposed to be converted into harmless carbon dioxide gas. It has a function. However, the aerobic bacteria are supplied to the secondary treatment tank 22.
May be of the same kind as that of, or may be different.

In use, through the opening of the partition,
The sewage flowing into the tertiary treatment tank 24 due to the overflow descends between the ceramic balls 24a. At this time, air is sent from the air blower 34 to the diffuser tube 24b, and bubbles are released from the diffuser tube 24b. The bubbles rise between the ceramic balls 24a, and the ceramic balls 24a are aerated. Then, the organic substances remaining in the wastewater are completely oxidized and decomposed by the aerobic bacteria, and the wastewater becomes clean treated water.

A partition is also provided between the third processing tank 24 and the next water storage tank 25, and an opening is provided below the partition. The water storage tank 25 is for storing the processing water flowing through the opening from the third processing tank 24.

The treated water in the water storage tank 25 is
Is pumped up by a circulation pump 45 from the pipe facing the lower layer, enters the activated carbon unit 46 through the normally open valve V1, and is deodorized and decolored there. A part of the treated water entering the activated carbon unit 46 is pumped up by the washing pump 33 and sent to the flush toilet 11 as the washing water. The remaining treated water is returned to the water storage tank 25 again through the normally open valve V3. The pipe line connected to the discharge port of the circulation pump 45 is connected to the second sewer pipe 19 downstream of the waste pump 14 via the normally closed valve V4 and the check valve C. Since V4 is normally closed, the treated water from the circulation pump 45 exclusively enters the activated carbon unit 46.
The water storage tank 25 is provided with an overflow pipe, and when the water level in the water storage tank 25 rises too much, the treated water is discharged to the outside by the overflow pipe.

The machine room 3 is provided between the septic tank room 2 and the toilet booth 1. Then, a diesel generator 31 serving as a power supply is installed in the machine room 3. Also,
In the machine room 3, a fuel tank 31a for storing the fuel of the diesel generator 31 is also installed. With this power supply,
Cleaning pump 33, waste pump 14, air blower 34,
The water supply pump 16 and the circulation pump 45 are operated, and the lighting device 35 installed in the toilet booth 1 or the like is turned on. Further, a control panel 32 for controlling the operation of all these electric devices is also installed in the machine room 3.

A water supply tank 15 is provided below the floor of the machine room 3, and a water supply pump 16 is provided in the machine room 3 above the water supply tank 15.
Is provided. The outlet of the water supply pump 16 and the hand-washing machine 17 are connected by a pipe, and the water in the water supply tank 15 is sent to the hand-washing machine 17 when the hand-washing machine 17 is used. The water in the water supply tank 15 is supplied from outside.

The mobile toilet constructed as described above according to the present embodiment is provided integrally on the trailer 4 and can be used immediately in that state. For this reason, it is not necessary to unload the toilet from the trailer 4 and install it in a vacant lot or the like, and it is very easy to move to a necessary place and use it when needed. In addition, since it is a flush toilet, it can be used cleanly and comfortably.

Further, since human waste is completely treated by the microorganisms in the septic tank 20, it is not necessary to pump the human waste.
There is no need to put a chemical for treating human waste into the septic tank 20. In addition, since the treated water collected from the septic tank 20 is reused as the washing water for the flush toilet 11, replenishment of the water may be performed in the water supply tank 15, and the amount of water can be extremely small. Therefore, maintenance becomes very easy.

Further, since the human waste tank 12 is provided in the lower part of the floor at a lower position than the flush toilet 11, the flush toilet 11
Can be temporarily stored in the human waste tank 12 by gravity. For this reason, the septic tank 20 can be provided on the floor at the same height as or higher than the flush toilet 11, so that even if the height of the trailer is restricted by law, the flush toilet can be integrally placed on the trailer 4. 11 can be provided.

Further, a liquid level switch 13 is provided in the human waste tank 12, and when the liquid level of the human waste reaches the upper limit, the waste pump 1 is turned on.
4 to transfer the human waste to the septic tank 20 and then stop the waste pump 14 when it reaches the lower limit, and thereafter maintain the stopped state until it reaches the upper limit. Operation becomes intermittent, and power consumption can be saved.

In the portable toilet described above, the treated water is supplied to the septic tank 2
In some cases, the smell and color may not be completely erased only by processing at 0, but in this embodiment, the activated carbon unit 46
Since the treated water passes through the tank 25 again in the septic tank 20 and passes through the activated carbon unit 46 again, the smell and color are almost completely eliminated.

When the portable toilet is used continuously, the human waste is smoothly treated in the septic tank 20 as described above. However, when the portable toilet is not used for a relatively long time, the sewage in the septic tank 20 flows. Since the stagnation does not occur, each processing in each processing tank is performed, but the processing does not proceed to the next step, so that the entire processing is not performed. However, in the present embodiment, since the circulation pump 46 operates, the inside of the water storage tank 25 flows, and also the inside of the activated carbon unit 46 passes, so that the deodorization and decolorization of the water in the water storage tank 25 are promoted. You.

When the movable toilet is not used for a long time or is moved, the water in the septic tank 20 is drained. Before that, the following processing may be performed. That is, the normally open valves V1, V2, and V3 are changed from open to closed, while the normally closed valve V4 is changed from closed to open, and the circulation pump 45 is operated. Then
The treated water in the water storage tank 25 is sucked by the circulation pump 45,
After passing through the normally closed valve V4 and the check valve C, it merges with the second sewer pipe 19, passes through the second sewer pipe 19, and returns to the first chamber 21a again.
Is returned to. When the circulation pump 45 is continuously operated, the treated water in the septic tank 20 flows to perform various treatments,
Purified sequentially. The circulation pump 45 is turned on for a predetermined time (for example, 1
If operated, the treated water in the septic tank will be completely purified. When this occurs, the circulating pump 45 is stopped, and a drain valve (not shown) of the septic tank 20 is opened to discharge the treated water in the septic tank 20 to the outside. The total weight of the mobile toilet after draining is much lighter, so that it can be easily moved.

The present invention is not limited to the above embodiment. For example, as a vehicle, in addition to a trailer of the type shown in FIG. 5A, a trailer as shown in FIG. That is, the septic tank room 2 is a single trailer,
The toilet booth 1 and the machine room 3 may be used as another trailer, which may be connected to a single towing vehicle, or may be a self-propelled type as shown in FIG.

[0041]

As described above in detail, according to the first aspect of the present invention, since the toilet is mounted on the vehicle, it is easy to move, and since it is a flush toilet, it is clean and comfortable. Can be used. In addition, there is no need to collect human waste,
Rinse water from flush toilets is also covered by treated water collected from the septic tank, so there is almost no need for water supply. Therefore, maintenance is easy.

According to the second aspect of the present invention, since there is no need to add a chemical for treating human waste to the septic tank, the maintenance and management of the toilet is further facilitated.

According to the third aspect of the present invention, since the waste tank is provided at a lower position than the flush toilet, the waste discharged from the flush toilet can be temporarily stored in the waste tank by natural flow. it can. Therefore, the septic tank can be provided irrespective of the height of the flush toilet, so that the flush toilet can be used with the flush toilet mounted on the vehicle even if the vehicle has a legal height restriction. Become.

According to the fourth aspect of the present invention, the filth pump is activated when the liquid level of the sewage reaches the upper limit to transfer the sewage to the septic tank, and then stopped when the sewage reaches the lower limit. Thereafter, since the stopped state is maintained until the height reaches the upper limit, the operation of the waste pump becomes intermittent, and power consumption can be saved.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of a mobile toilet according to the present invention.

FIG. 2 is a sectional view of the portable toilet shown in FIG.

FIG. 3 is a system diagram of a left half of the mobile toilet of FIG. 2;

FIG. 4 is a system diagram of a right half of the mobile toilet of FIG. 2;

5A is a front view showing an example of a vehicle equipped with the mobile toilet of the present invention, FIG. 5B is a front view showing a second example, and FIG. 5C is a third example. FIG.

[Explanation of symbols]

 1 ··· Toilet booth 11 ··· Rinse toilet 12 ··· Human waste tank 13 ··· Liquid level switch 14 ··· Waste pump 15 ··· Water supply tank 16 ··· Water supply pump 17 ··· Handwashing machine 18 ··· Sewer pipe 19 ··· Second sewer pipe 2 ··· Septic tank room 20 ··· Septic tank 21 Primary treatment tank 21a First chamber 21b Second chamber 22 Second treatment tank 22a Laminated plate 22b・ Aerator tube 23 ・ ・ ・ ・ ・ ・ Sedimentation tank 24 ・ ・ ・ ・ Tertiary treatment tank 24a ・ ・ ・ ・ Ceramic ball 24b ・ ・ ・ ・ Aerator tube 25 ・ ・ ・ ・ ・ Water tank 3 ・ ・ ・ ・ ・ ・・ Machine room 31 ・ ・ ・ ・ ・ Diesel generator 31a ・ ・ ・ ・ Fuel tank 32 ・ ・ ・ ・ ・ ・ Control panel 33 ・ ・ ・ ・ ・ Pump for cleaning 34 ・Air blower 35 Lighting device 4 Trailer (vehicle) 41 Stairs 45 Circulation pump 46 Activated carbon unit V1 ... normally open valve V2 ... normally open valve V3 ... normally open valve V4 ... normally closed valve C ... check valve

Claims (4)

[Claims] 1. A flush toilet, a human waste tank for storing human waste discharged from the flush toilet, a septic tank for treating human waste transferred from the human waste tank, and treated water treated by the flush toilet in the purifier. A circulating pump for transferring water as washing water to a vehicle. 2. A mobile toilet according to claim 1, wherein said septic tank contains microorganisms for treating human waste. 3. The mobile toilet according to claim 1, wherein the human waste tank is provided at a lower position than a flush toilet. 4. A liquid level switch for detecting an upper limit and a lower level of liquid level of human waste, and a waste pump started and stopped by a signal of the liquid level switch, in the human waste tank. The mobile toilet according to claim 3,