JP2017217571A - Portable type purification tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable type purification tank for feeding treated water obtained by subjecting waste water exhausted from a toilet facility to the toilet facility as reclaimed water.SOLUTION: Provided is a portable type purification tank for feeding treated water 14 obtained by subjecting waste water exhausted from a toilet facility 1 to the toilet facility 1 as reclaimed water, comprising: waste water inflow means 31 for inflowing the waste water exhausted from the toilet facility 1 to a sludge separation tank 2; a sludge separation tank 2 separating the waste water into sludge 6 and a separated liquid 7; sludge exhaust means 5 exhausting the sludge separated in the sludge separation tank 2 to a sewerage; purification treatment means 3 subjecting the separated liquid 7 separated in the sludge separation tank 2 to purification treatment; treated water storage means 4 storing the treated water 15 purified in the purification treatment means 3; and reclaimed water feed means 32 for feeding the treated water in the treated water storage means 4 to the toilet facility as reclaimed water 15.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a septic tank for purifying waste water discharged from a toilet facility and supplying treated water as recycled water to the toilet facility.

  In recent years, the Great Hanshin-Awaji Earthquake, the Great East Japan Earthquake, and the Kumamoto Earthquake have occurred frequently. When disasters such as earthquakes, tsunamis, and large fires occur, many houses may disappear, and infrastructure facilities such as electricity and water supply may become unusable. In such a case, the victim may be forced to use the park or the like as an emergency shelter until the temporary housing is completed. And the victim who evacuated to a park etc. will use the temporary toilet etc. which were installed in the said emergency shelter. Even if it is a temporary toilet, a flush toilet is required instead of a sink.

The toilet used in the event of a disaster as described above and the equipment associated therewith must be portable so that it can be installed quickly and easily.
In addition, it is difficult to secure toilet water in drought areas and areas where infrastructure facilities are delayed overseas, and the use of reclaimed water is required.

Patent Document 1 describes a portable purifier as shown in FIG.
This apparatus is connected to a merged processing septic tank 2, a vacuum pump P having a discharge port 80 connected to an inflow pipe 25 thereof, and a discharge pipe 26 of the combined processing septic tank 2 in a machine frame 1 formed to be portable. The flush water tank of the temporary toilet B, which is mounted on the reuse water tank 3 and has the leading end of the water conduit 30 connected to the reuse water tank 3 at the base end side adjacent to the machine frame 1 The suction port 81 of the vacuum pump P is communicated with the discharge pipe 40 of the toilet 4 of the temporary toilet B through a pipe 82.

  Patent Document 2 describes a portable toilet as shown in FIG. This device is an FRP box-shaped portable toilet house 1 integrally plastic-molded including a large number of toilets 14 and the like. The flushed waste discharged from the portable toilet house 1 is a diffuser tube. Is pumped from the active circulation chamber 8 aerated by the submersible pump to the clarification chamber 16, the solid content is deposited on the hopper bottom 20, and the separated water overflows from the notch 36 of the overflow weir of the clarification chamber 16. 17 flows in. The separated water that has flowed into the active water chamber 17 is purified by being aerated by a diffuser pipe using a blower, and the purified water is distributed from the water supply chamber to each toilet 14. The purified water distributed to each toilet 14 is washed in the toilet 14 and returned to the active circulation chamber 8. Thereafter, the washing water is recycled in the circulation cycle in this way. On the other hand, the solid content deposited on the hopper bottom 20 is transferred upward by an air lift 21 and discharged and stored in a storage tank 23 attached to the incineration chamber. In the storage tank 23, the electromagnetic valve is opened by timer control, the solid waste stored in the storage tank 23 flows into the hearth of the incinerator 24 through the discharge pipe 37 and is incinerated, and the exhaust is discharged from the chimney 25 to the outside.

Patent Document 3 describes a container-type sewage purification system as shown in FIG. This container-type sewage purification system has a sewage septic tank 3 having a plurality of sewage treatment chambers 16 to 20 that purify the sewage discharged from the toilet room 12 and the like in stages, and a container 1 that houses the sewage septic tank 3. doing. And the foaming plastic material 8 is filled in the space | gap part formed between the inner wall face of this container 1 and the surrounding wall face of the said sewage purification tank 3, and conveyance of a container-type sewage purification system, installation work, etc. are made easy. To be able to do.
Moreover, in patent document 3, as shown in FIG.7 (b), the solar panel 53 is provided in the upper surface part of the container 1, and a blower, a circulation pump, and a water supply pump are utilized using the electric power obtained by the solar panel. It is described that the attached equipment of the sewage purification system consisting of the above is operated.

Japanese Utility Model Publication No. 5-33893 JP-A-8-277766 JP 2008-289969 A

The portable purification device described in Patent Document 1 treats drainage from a temporary toilet, and does not use existing toilet facilities and sewer facilities.
The portable toilet described in Patent Document 2 is a combination of a toilet and a purification device, and this also does not use existing toilet facilities and sewer facilities.
The container-type sewage purification system described in Patent Document 3 does not use existing toilet equipment and sewerage equipment.

  The present invention is usually used as a septic tank that supplies reclaimed water using existing toilet facilities and sewer facilities, and is transferred to another place such as a refuge in the event of an emergency such as a disaster. An object of the present invention is to provide a portable septic tank that can be used as a septic tank that supplies reclaimed water to toilet facilities and temporary toilets.

In order to solve the above problems, the waste water purification apparatus according to the present invention has a configuration as described below.
(1) A portable septic tank for supplying treated water obtained by purifying waste water discharged from toilet equipment to the toilet equipment as reclaimed water,
Drainage inflow means for allowing wastewater discharged from toilet facilities to flow into the sludge separation tank;
A sludge separation tank for separating the waste water into sludge and a separated liquid;
Sludge discharging means for discharging the sludge separated in the sludge separation tank to the sewer,
Purification treatment means for purifying the separation liquid separated in the sludge separation tank;
Treated water storage means for storing treated water purified by the purification treatment means;
Reclaimed water supply means for supplying treated water in the treated water storage means to the toilet facility as reclaimed water;
A portable septic tank characterized by comprising:
(2) The portable septic tank according to (1), wherein the sludge discharging means includes an on-off valve for blocking the sludge flow path.
(3) The portable septic tank according to (2), further including a vibration meter, wherein the on-off valve is activated by a signal from the vibration meter to shut off the sludge flow path.
(4) The portable septic tank according to any one of (1) to (3), comprising rainwater collecting means and a rainwater storage tank for storing rainwater collected by the rainwater collecting means.
(5) The portable septic tank according to (4), wherein the treated water storage means also serves as a rainwater storage tank.
(6) The portable septic tank according to any one of (1) to (5), which is provided with a sterilization facility for the treated water.
(7) The portable septic tank according to any one of the above (1) to (6), which includes a solar power generation facility.
(8) The portable septic tank according to any one of (1) to (7) above, wherein the portable septic tank is containerized.

  The septic tank of the present invention is portable and can be used as a septic tank that supplies reclaimed water for existing toilet facilities during normal times, and can be transferred to another place such as an evacuation site in case of an emergency such as a disaster. It can be used as a septic tank that supplies reclaimed water for existing toilet facilities or temporary toilets in the other place.

It is a figure which shows the outline | summary of the reclaimed water supply system using the septic tank of this invention. It is a figure which shows embodiment of the septic tank of this invention. It is a figure which shows embodiment of the septic tank of this invention. It is a figure which shows embodiment of the reclaimed water supply system using the septic tank of this invention. It is a figure which shows the conventional portable purification apparatus. It is a figure which shows the conventional portable toilet. It is a figure which shows the conventional container type sewage purification system.

An outline of the septic tank of the present invention and a reclaimed water supply system using the septic tank will be described with reference to FIG.
The septic tank 20 of the present invention includes a drainage inflow means 31 for allowing the drainage 14 discharged from the toilet facility 1 to flow into the sludge separation tank 2, and the sludge separation tank 2 for separating the drained wastewater 14 into the sludge 6 and the separation liquid 7. The sludge discharging means 5 for discharging the sludge separated in the sludge separation tank 2 to the sewer pipe 37, the purification treatment means 3 for purifying the separated liquid 7 separated in the sludge separation tank 2, and the purification treatment means 3 The treated water storage means 4 for storing the purified treated water 15 and the reclaimed water supply means 32 for supplying the treated water in the treated water storage means 4 as the reclaimed water 15 to the toilet facility 1 are integrated. Can be transported.
As the configuration of the purification processing means 3, a configuration adopted in a known septic tank can be employed.

The toilet facility 1 is connected by a joint F1 through a drainage inflow means 31 of the portable septic tank 20 and an on-off valve 51.
The sludge separation tank 2 and the sewer pipe 37 of the portable septic tank 20 are connected by a joint F <b> 2 through an on-off valve 52.
The reclaimed water supply means 32 of the portable septic tank 20 is connected to the reclaimed water supply pipe 8 by a joint F3 through an on-off valve 53.
The reclaimed water supply pipe 8 is connected to the toilet facility 1 by a joint F4 through an on-off valve 54.
The toilet facility 1 is connected to the sewer pipe 37 by a joint F5 through an on-off valve 55.

The septic tank 20 of the present invention is portable, and in the event of a disaster, the septic tank 20 is transferred to another place such as a shelter where water for washing is insufficient, and reclaimed water is supplied to existing toilet facilities or temporary toilets in the other place. .
The septic tank 20 of the present invention is preferably containerized in order to facilitate transportation and installation. The size of the container is preferably a size that can be transported by a 2t track.

An example of the embodiment of the septic tank 20 will be described with reference to FIG.
The septic tank 20 shown in FIG. 2 includes a sludge separation tank 21 having a drainage inflow means 31, an anaerobic filter bed first chamber 22, an anaerobic filter bed second chamber 23, a biological filtration tank 24, a treated water storage tank 25, and a membrane. It consists of a filtration tank 26. The membrane filtration tank 26 is provided with reclaimed water supply means (treated water discharge means) 32, and treated water that has flowed out of the reclaimed water supply means 32 is supplied to the toilet facility 1 as reclaimed water.

In order to operate the septic tank 20, a power source for driving a blower, a pump and the like used in the anaerobic filter bed first chamber 22, the anaerobic filter bed second chamber 23, the biological filtration tank 24, the membrane filtration tank 26, and the like. Necessary. It is necessary to equip a separate generator that uses gasoline or light oil as fuel in case the existing power supply cannot be used. Further, in order to reduce the burden on the generator, a solar power generation facility may be provided in the septic tank 20 to supply power necessary for the operation of the septic tank 20 and power necessary for toilet facilities.

  The sludge separation tank 2 is provided with a sludge discharge means 5, and this sludge discharge means 5 is detachably connected to a branch pipe of a sewer pipe. The sludge discharging means 5 is provided with a device for blocking the sludge flow in the sludge discharge pipe. This blocking device will be described later.

Details of each tank will be described below.
The drainage discharged from the toilet facility 1 flows into the sludge separation tank 21 from the drainage inflow means 31 and is separated into sludge and separation liquid. A sludge discharge pipe 34 as a means for discharging sludge is provided at the bottom of the sludge separation tank 21, and the sludge discharge pipe 34 is connected to a branch pipe 36 of a sewer pipe 37 by a joint portion 35 via an on-off valve 52 for separation. The sludge that has been discharged is discharged to the sewer pipe 37.

The on-off valve 52 provided in the sludge discharge pipe 34 is preferably configured so that the flow rate of sludge can be adjusted by adjusting the opening of the valve.
By adjusting the sludge flow rate, if the reclaimed water utilization rate is high, the entire amount of wastewater from the toilet facility 1 is treated in the septic tank 20, and if the reclaimed water utilization rate is low, a part of the wastewater from the toilet facility 1 is treated. Treatment is performed in the septic tank 20.
Further, by separating the sludge in the sludge separation tank 21 and treating it separately, the amount of treatment on the downstream side of the sludge separation tank 21 can be reduced, so the load on the septic tank 20 can be reduced. Can do.

As the anaerobic filter bed first chamber 22, the anaerobic filter bed second chamber 23, and the biological filtration tank 24, any of those used in known septic tanks can be used.
In the first chamber 22 of the anaerobic filter tank, the solid content is dripped and separated with a filter medium, and organic matter decomposition by anaerobic bacteria and nitrification decomposition by denitrifying bacteria are performed.
The wastewater treated in the anaerobic filter tank first chamber 22 is further subjected to organic substance decomposition by anaerobic bacteria and nitrification decomposition by denitrifying bacteria in the anaerobic filter bed second chamber 23.
Waste water treated in the anaerobic filter bed second chamber 23 flows into the biological filtration tank 24. The biological filtration tank 24 is filled with a contact material, the inside of the tank is agitated by the air sent from the blower into the tank, the dirt is decomposed by the microorganisms adhering to the surface of the contact material, and the waste water is highly purified. It becomes treated water.

The treated water that has flowed out of the biological filtration tank 24 is stored in the treated water storage tank 25.
The treated water storage tank 25 may store rainwater collected by the rainwater collecting means 33 together with treated water as shown in FIG.
A rainwater storage tank for storing rainwater may be provided separately from the treated water storage tank 25.

  FIG. 3 shows an embodiment of the rainwater collecting means 33. In this embodiment, the solar panel 30 is inclined and disposed on the upper surface of the ceiling portion of the septic tank 20. In addition, a horizontal wall 40, a water collector 41 and a vertical wall 42 are installed as rainwater collecting facilities at the base of the solar panel 30, and the rainwater flowing on the light receiving surface of the solar panel 30 is received by the horizontal wall 40 to collect the water collector 41. And collected into the treated water storage tank 25 by the vertical rod 42.

Next, the treated water in the treated water storage tank 25 flows into the membrane filtration tank 26.
A separation membrane such as an ultrafiltration membrane having fine pores is preferably disposed in the membrane filtration tank 26 as a separation membrane. As the form of the separation membrane, a flat plate shape, a hollow shape, or the like can be used. However, since the membrane area is large, it is preferable to use a separation membrane made of a hollow fiber membrane.
Moreover, it is preferable to attach the sterilization equipment to the membrane filtration tank 26, sterilize the treated water in the membrane filtration tank 26, and supply it to the toilet equipment 1 as reclaimed water.

  Each of the sludge separation tank 21, the anaerobic filter bed first chamber 22, the anaerobic filter bed second chamber 23, the biological filtration tank 24, the treated water storage tank 25, and the membrane filtration tank 26 constituting the septic tank 20 is easily maintained. Therefore, it is preferable to provide a maintenance hole.

Embodiment of the waste water purification system using the septic tank 20 of this invention is described based on FIG.
Waste water 14 discharged from the toilet facility 1 flows into the septic tank 20, and is purified by the sludge separation tank 21, the anaerobic filter bed first chamber 22, the anaerobic filter bed second chamber 23, and the biological filtration tank 24 to become treated water. Then, after being stored in the treated water storage tank 25 and membrane-separated in the membrane filtration tank 26, it becomes reclaimed water 15 and is supplied to the toilet facility 1.
Reclaimed water 15 is used in the shower 11, faucet 12, and flush toilet 13 of the toilet facility 1.

In normal times, the septic tank 20 is arranged as an auxiliary facility of the existing toilet facility 1.
At this time, the on-off valves 51, 52, 53, and 54 shown in FIG. 1 are “open”, and the on-off valve 55 is “closed”.
The drainage 14 discharged from the toilet facility 1 flows into the sludge separation device 21 through the drainage inflow means 31. The sludge separated by the sludge separation device 21 is discharged from the sludge discharge pipe 34 into the sewer pipe 37 through the joint portion 35 and the branch pipe 36 of the sewer pipe 37. On the other hand, the separated liquid from which the sludge has been separated is treated in the septic tank 20, and the reclaimed water 15 obtained by the treatment is supplied to the toilet facility 1 through the reclaimed water supply pipe 8.

In the event of a disaster, the on-off valves 51, 52, 53, 54 shown in FIG. 1 are set to “closed”, and the on-off valve 55 is set to “open”. Next, the couplings F1, F2, F3, and F4 are disconnected and the septic tank 20 is separated. The separated septic tank 20 is transferred to a place where it is difficult to secure flush water such as a disaster-stricken area, and is used to supply reclaimed water by installing it in an existing toilet facility or temporary toilet in the disaster-stricken area.
When the sewage pipe 37 can be used at the place where the septic tank 20 is disposed, the sludge discharge pipe 34 of the septic tank 20 is connected to the branch pipe 36 of the sewage pipe 37 and the sludge 6 is connected to the sewage pipe 37 for use. Further, when the sewer pipe 37 cannot be used, the sludge discharge pipe 34 is shut off so that the entire amount of waste water from the toilet facility is treated in the septic tank 20.

In addition, when a problem occurs in the sewer pipe 37 where the septic tank 20 is disposed due to an earthquake or the like, it is preferable to provide a shut-off device for blocking the flow path of the sludge discharge pipe 34.
For example, as shown in FIG. 2, the shut-off device includes a seismometer 60 and an on-off valve 52 provided in the septic tank 20. The seismic intensity is detected by the vibrometer 60, and when the detected vibration exceeds a certain value, the on-off valve 52 is automatically "closed" so that the sludge discharge pipe 34 is shut off, and the entire amount of waste water is processed in the septic tank 20.

  Since the septic tank of the present invention is portable and has a structure that allows the use of existing sewer pipes, it can be used as a flush water supply device for existing toilet facilities during normal times. In some cases, it can be transferred to another place such as an evacuation center and used as a flush water supply device for existing toilet facilities and temporary toilets in the other place.

(About FIGS. 1-4)
DESCRIPTION OF SYMBOLS 1 Toilet equipment 2 Sludge separation tank 3 Purification treatment means 4 Treated water storage means 5 Sludge discharge means 6 Sludge 7 Separation liquid 8 Reclaimed water supply piping 11 Shower 12 Faucet 13 Flush toilet 14 Drain 15 Treated water, reclaimed water 20 Septic tank 21 Sludge separation tank 22 Anaerobic filter floor tank 1st chamber 23 Anaerobic filter floor tank 2nd chamber
24 biological filtration tank 25 treated water storage tank 26 membrane filtration tank 30 solar panel 31 drainage inflow means 32 reclaimed water supply means 33 rainwater collecting means 34 sludge discharge pipe
35 Joint portion 36 Branch pipe of sewer pipe 37 Sewer pipe 40 Sewer pipe 41 Water collector 42 Longitudinal pipe 51, 52, 53, 54, 55 On-off valve 60 Seismic intensity meter F1, F2, F3, F4, F5 Joint

(About Figure 5)

DESCRIPTION OF SYMBOLS 1 Machine frame 2 Merger processing septic tank 3 Reuse water tank 4 Toilet bowl 5 Washing water tank 25 Inflow pipe 26 Outflow pipe 30 Conduit pipe 40 Drain pipe 50 Water inlet 80 Outlet 81 Outlet 82 Pipe P Vacuum pump B Temporary toilet

(About Figure 6)

DESCRIPTION OF SYMBOLS 1 Portable toilet house 8 Active circulation chamber 14 Toilet 16 Settling chamber 17 Active water chamber 20 Hopper bottom 21 Airlift 23 Storage tank 24 Incinerator 25 Chimney 29 Hopper bottom 36 Notch 37 of overflow dam

(About Figure 7)
DESCRIPTION OF SYMBOLS 1 Container 3 Wastewater septic tank 8 Foamed plastic material 12 Toilet room 16, 17, 18, 19, 20 Purification processing room 53 Solar panel

Claims (8)

A portable septic tank for supplying treated water obtained by purifying waste water discharged from toilet equipment to the toilet equipment as reclaimed water,
Drainage inflow means for allowing wastewater discharged from toilet facilities to flow into the sludge separation tank;
A sludge separation tank for separating the waste water into sludge and a separated liquid;
Sludge discharging means for discharging the sludge separated in the sludge separation tank to the sewer,
Purification treatment means for purifying the separation liquid separated in the sludge separation tank;
Treated water storage means for storing treated water purified by the purification treatment means;
Reclaimed water supply means for supplying treated water in the treated water storage means to the toilet facility as reclaimed water;
A portable septic tank characterized by comprising:   The portable septic tank according to claim 1, wherein the sludge discharging means includes an on-off valve for opening and closing the sludge flow path.   The portable septic tank according to claim 2, further comprising a vibrometer, wherein the on-off valve is activated by a signal of the vibrometer to block the sludge flow path.   The portable septic tank according to any one of claims 1 to 3, comprising a rainwater collecting means and a rainwater storage tank for storing rainwater collected by the rainwater collecting means.   The portable septic tank according to claim 4, wherein the treated water storage means also serves as a rainwater storage tank.   The portable septic tank in any one of Claims 1-5 provided with the sterilization installation of the said treated water.   The portable septic tank in any one of Claims 1-6 provided with the solar power generation facility.   The portable septic tank according to any one of claims 1 to 7, wherein the portable septic tank is containerized.

Images