JP2000288567A - Circulating type sewage cleaning apparatus of temporary toilet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve excellent sewage treatment efficiency and to prevent washing water to be reutilized from becoming turbid by partitioning a sewage treatment tank into first and second aeration tanks and a treated water tank of membrane treated water and arranging a membrane treatment tank pumping up primary treated water after aeration treatment to subject the same to membrane treatment. SOLUTION: Washing sewage from a toilet is allowed to flow down to a first aeration tank 16 from the inflow port 18 of a sewage inflow pipe 19. When new washing sewage flows in the first aeration tank 16, primary treated sewage stagnated in the transfer passage provided to the terminal part of the first aeration tank 16 flows to a second aeration tank from a flooding wall 23. The treated sewage overflowing the underwater weir 30 of the terminal part of a transfer passage 27 is pumped up to a membrane treatment tank 32 by a pump P1 and filtered by the filtering treatment membrane 34 of a membrane separation chamber 35 while a membrane surface is aerated and washed by an air diffusing device 36 and secondary treated sewage being membrane treated water is gathered to be allowed to flow in a treated water tank 40 from a transfer pipe 41. The filtered untreated water overflowing the membrane treatment tank 32 is returned to the terminal part of the first aeration tank 16 from a return pipe 39.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to the use of flush water for a long period of time by rinsing flush water from a flush toilet into a sewage treatment tank, purifying it, and circulating the membrane treated water. The present invention relates to a circulating sewage purifying apparatus for a temporary toilet having a unit structure capable of performing a cleaning operation.

[0002]

2. Description of the Related Art Conventionally, there are scattered spots in areas without sewers, sightseeing spots and ski slopes where tourists and skiers are concentrated during the sightseeing season and ski season, beach areas where sea bathers are concentrated during the sea bathing season, and mountainous areas. In golf courses, places far away from the clubhouse, where it is difficult to install water and drainage facilities, places where the installation of fixed facilities is restricted from the viewpoint of not impairing the landscape and natural environment, and earthquakes Schools and parks in evacuation areas in disaster areas due to the above, or various event venues where potential for attracting customers is expected. It is necessary to install the required number of temporary toilets as needed.

[0003] It is not sanitary or modern in that it must be handled by a pump-type temporary toilet. In particular, considering the use of women and girls, if the temporary toilet is flushed, there is no hesitation to use it. However, to make the temporary toilet flush,
It is essential to provide a sewage treatment device accompanying the washing, and it is necessary to solve various problems such as how to use the wastewater in a place where a drainage facility for the treated sewage cannot be provided.

[0004] In this regard, in the prior art, as a circulation type temporary toilet capable of repeatedly using flushed sewage, Japanese Patent No. 2,544,711, Japanese Patent Application Laid-Open No. 3-100241, and Japanese Patent Application Laid-Open No. 5-26 are disclosed.
There have been proposed temporary toilets provided with various types of sewage treatment structures as disclosed in JP-A-3451, JP-A-5-33893, and JP-A-7-9494.

[0005]

However, in the case of a temporary toilet having the structure disclosed in the above-mentioned publication, it is difficult to say that the actual use of the toilet has been verified. It is hard to say that a sewage treatment device that can maintain proper purification treatment performance is incorporated. In the case of conventional temporary toilets, flushing wastewater is simply circulated in the flushing toilet with a degree of treatment that can be used repeatedly in a dark black turbid state, and a rather strong odor enters the room. The situation is real, and sometimes the sewage treatment capacity is poor, causing floods in the neighborhood.

[0006]

Therefore, in the present invention, a flush toilet and a sewage purification device for the flush toilet are unitized, and the sewage treatment tank is provided at a lower part of the floor in order to transport the lavatory to the site for installation and use. In a temporary toilet provided with a toilet above the floor, the sewage treatment tank is provided with a first aeration tank for performing aeration treatment of rinsing sewage, a second aeration tank for performing aeration treatment while flowing the sewage, and treatment of membrane treatment water. It provided a circulating sewage purification device that was excellent in sewage treatment efficiency and provided with a membrane treatment tank that divides it into a water tank and pumps up the aerated treated primary treatment water for membrane treatment. .

In the second aspect of the present invention, as a filter medium for contacting wastewater in the first aeration tank and the second aeration tank, a filter medium block in which ceramic porous spheres are charged into a resin net is immersed and subjected to aeration treatment. In addition, the activity of biological treatment by microorganisms has been prosperous, and the purification treatment capacity has been significantly improved. In this regard, in winter when the biological treatment activity by microorganisms is weakened, the input amount and the number of the filter media masses in which the porous spheres are put into the net are greatly increased, so that the purification treatment ability by microorganisms is not weakened. It is desirable to deal with it.

According to a third aspect of the present invention, there is provided a microorganism treatment accelerating device having a rotary drum in the sewage purifying device of the first aspect.
Due to the contact filter medium charged to the rotary drum and the rotation of the rotary drum, the primary treatment wastewater pumped up to the rotary drum and the contact filter medium are intensively stirred and mixed, whereby the treated wastewater in the first and second aeration tanks is mixed. It promotes microbial treatment of fibrous sludge accumulated in coal, reducing so-called paper sludge volume and reducing the load at the membrane treatment stage.

According to a fourth aspect of the present invention, a pH meter for measuring the PH value of the membrane treated water and a chemical liquid dropping device for the treated water tank are provided in the treated water tank, and the PH value of the treated water tank is adjusted to pH 5.5 to P
In order to keep it at about H7.5, when the pH is less than 5.5,
Caustic soda or slaked lime is dropped from the dropping device to promote the activity of microorganisms, thereby preventing a decrease in sewage treatment efficiency. When the pH is higher than 7.5, malic acid or dilute sulfuric acid is discharged from the dropping device. By dropping water, etc., the deodorizing treatment of the circulating treated water is dealt with.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION A portable toilet T according to the present invention has a circulation type sewage treatment tank S incorporated in the lower part of the floor, and a three-part upper part of the floor as shown in the perspective view of FIG. A male and female toilet R1 to R3 and a membrane treatment tank 32 installed outside the rear side as shown in the plan sectional view of FIG. 2, and instruments and cleaning equipment which also serve as a partition for the male and female toilet R1 to R3. Are laid out in a locker structure.

Therefore, according to the exploded perspective view shown in FIG.
The structure of the building of the temporary toilet T will be described along the assembly procedure.

First, a bottom plate 1 and a side plate 2 standing up, down, left and right around its outer periphery are formed into a horizontally elongated rectangular flat box shape by a steel plate, and serve as a base of a building and a storage room of a sewage treatment tank described later. A box 3 is formed, and the inside of the box 3 has a depth of 50 to 60 c defined as shown in FIGS.
The FRP sewage treatment tank S having a rectangular shape and a flat box shape having a capacity of about 3 to 4 cubic meters is dropped and accommodated.

Next, a floor frame 4 having a rectangular frame formed of angle steel is formed on the upper opening edge of the underfloor box 1 and a space therebetween is appropriately partitioned by a horizontal lattice or a vertical lattice. At the four corners and the middle part of the floor frame 4, through columns 5 made of angle steel or channel steel are raised, and a ladder-shaped ceiling frame 6 is attached to the upper end thereof.

After that, the partition between the through columns 5 on the left and right sides is divided into a plurality of rooms, for example, about three male and female toilets R1 to R3 and a storage room R4 as shown in FIG. 4, in the case of a Japanese-style toilet, the floor plate 8 is formed in a stepped shape, and furthermore, the left and right sides and the back surface of the outer periphery are formed so as to be surrounded by side plates 9. At this time, in the case of a Western toilet, the floor plate 8 is usually provided in a flat shape. Further, a roof plate 10 having a corrugated plate shape or a triangular shape is attached to the ceiling frame 6.

Each of the partitioned toilets R1 to R3 is provided with a Japanese-style or Western-style toilet 11, a low tank 12, a hand-washing machine 13, and the like, and a door 14 is mounted on the front of each of the rooms R1 to R4. A window 15 and a ventilation fan (not shown) are attached to the back surface. By such a procedure, the building of the temporary toilet T is assembled.

Next, in a sewage treatment tank S having a flat tank structure accommodated in the underfloor box 3 of the temporary toilet T, a membrane treatment tank 32,
Further, a circulating sewage purification apparatus constituted by combining a microorganism treatment accelerating device M and the like will be described based on a plan view of FIG. 4 and a schematic diagram incorporating a piping system shown in FIG.

A first aeration tank 16 is laid out in the rear half of the sewage treatment tank S on the right side from the center, and a diffuser 17 is linearly arranged in the tank at the rear position of the first aeration tank 16. Piping. Reference numeral 18 denotes an inflow port for flushing sewage into the first aeration tank 16, and a sewage inflow pipe 19 is piped under the floor between the flushing toilet 11 of each of the toilets R1 to R3. Reference numeral 20 denotes a groove-like advection passage formed at the end of the first aeration tank 16,
The sewage treatment tank S is formed at a position near the concave portion 33 which is recessed in the latter half of the left side position from the center, functions as a retention zone for the primary treatment sewage aerated in the first aeration tank 16, and At the end, an overflow weir 23 is formed on a partition wall 22 that partitions the first aeration tank 16 and the next second aeration tank 21 back and forth.

The second aeration tank 21 is formed in the first half of the sewage treatment tank S, at a position on the right side from the end of the advection passage 20, and the second aeration tank 21 is formed in front and rear by a guide partition 24. . That is, the primary treatment wastewater flowing from the overflow weir 23 is transferred to the advection passage 25 in the upstream portion of the second aeration tank 21.
Is flowed to the right as shown in the plan view of FIG. 4, and the opening 26 at the right end of the guide partition 24 is U-turned to change the direction.
The advection passage 27 downstream of the second aeration tank 21 is partitioned so as to flow to the left.

At the bottom of the advection passage 25 on the upstream side of the second aeration tank 21 and at the bottom of the advection passage 27 on the downstream side, a diffuser 28 is piped linearly at an appropriate interval. 2
1 air diffuser 28 and the air diffuser 17 of the first aeration tank 16
, An air supply pipe 29 is connected to the blower pump B1 installed in the storage room R4 by air piping. Reference numeral 30 denotes a low-stage submerged weir partitioned at the end of the downstream advection passage 27, which is formed in a partition with the next pump tank 31 so as to suppress the inflow of settled sludge into the advection passage 27, A pump P1 for pumping the primary sewage flowing over 30 is installed.

Reference numeral 32 denotes an external type membrane treatment tank for treating the pumped treated sewage with a membrane, which is recessed in the rear half of the storage chamber R4 and installed at a position corresponding to the recess 33 of the sewage treatment tank S. Is accommodated. Inside the membrane processing tank 32, there is provided a membrane separation chamber 35 accommodating a large number of flat filtration membranes 34 arranged side by side in an upright state.
An air diffuser 36 is piped to the bottom of 5. The air diffuser 36 is provided with a blower pump B2 and an air supply pipe 37 thereof. Reference numeral 38 denotes a supply pipe of the primary treatment sewage pumped by the pump P 1, and has a leading end connected to an upper position of the membrane treatment tank 32. Reference numeral 39 denotes a return pipe of unfiltered treated water that overflows from the membrane treatment tank 32 and is returned so as to return around the entrance of the advection passage 20 of the first aeration tank 16.

Numeral 40 designates a treatment water tank which is formed on the left side of the sewage treatment tank S, and is a terminal of an advection pipe 41 which collects and treats the membrane treatment water filtered by the filtration membrane 34 as secondary treatment water. The part faces the treated water tank 40. Reference numeral 42 denotes an end of the treatment tank 40 and the first aeration tank 16 of the pretreatment tank,
It is a partition between the tip of the aeration tank 21 and the pump tank 31. P
Reference numeral 2 denotes a pump for pumping up the secondary treatment water stored in the treatment water tank 4, and a filter 4 provided in the middle of the supply pipe 43.
4 and branch piping with the low tank 12 of each of the toilets R1 to R3. Reference numeral 45 denotes an inflow pipe for washing water that connects each low tank 12 and each toilet 11.

Reference numeral 46 denotes a tap water supply pipe which is drawn in from the nearest water source by a tap hose or the like, and is connected to each of the toilets R1 to R
The used wastewater is branched to a terminal portion of the second aeration tank 21 and the treated water tank 40 via a drain pipe 47. If a temporary toilet T is installed in a place where tap water is difficult to obtain, a water storage tank 48 may be provided as necessary to supply fresh water, and in some cases, rain water may be supplied. Can also be configured.

Reference numeral 49 denotes a bypass pipe branched from the supply pipe 38 to the membrane processing tank 32, and a pump P2
A part of the primary treatment sewage pumped in the above is piped so as to be bypass-supplied to the microorganism treatment promoting device M shown in FIGS. This microbe treatment promoting device M includes a membrane treatment tank 3
2 or the empty space of the storage chamber R4 as shown in FIG. 2, and the cylindrical outer drum 51 having a bottom is supported by the box-shaped processing tank 50 so that the inclination angle can be variably adjusted. are doing. Inside the outer drum 51, a porous or mesh-shaped rotary drum 52 is rotatably supported, and inside the rotary drum 52, a stirring blade plate 5 is provided.
3 overhangs. Reference numeral 54 denotes a woven fabric filtration membrane having a mesh of about 1 micron, which is detachably formed on the rotary drum 52.

Reference numeral 55 denotes a driven sprocket formed at the rear end of the rotary drum 52, and a transmission chain 58 is suspended between the driven sprocket and a driving sprocket 57 of an electric motor 56 installed on the drum 51. Reference numeral 59 denotes a support roller of the rotary drum 52, and reference numeral 60 denotes an angle adjusting arm of the outer drum 51. The lower end of the arm is pivotally mounted on the side wall of the processing tank 50, and the upper end of the arm is attached to the side wall of the outer drum 51. 6
Reference numeral 1 denotes a through hole provided in the bottom wall of the drum 51,
The desorbed liquid filtered in 4 flows out. 62 is a processing tank 50
Return pipe for the desorbed liquid stored in
It faces the aeration tank 21. 63 is an air diffuser,
The film processing tank 3 is provided at the bottom of the outer drum 51.
A branch pipe is provided so that air is supplied from an air supply pipe 37 to the second pipe.

Reference numeral 64 denotes a PH meter attached to the treatment water tank 40,
Y is a drug dropping device, and the PH value of the PH meter 64 is a numerical value outside a predetermined range, specifically, the PH value of the treated water tank 40 is out of a range of about PH 5.5 to PH 7.5. In some cases, a chemical solution tank 6 containing a solution such as malic acid or dilute sulfuric acid
5, or by controlling the opening of one of the electromagnetic valves 27 of the chemical solution tank 66 containing a solution such as caustic soda or slaked lime, the pH is adjusted by dropping the chemical droplets into the treatment water tank 40.

Next, a description will be given of a process of purifying the flush sewage in the circulating temporary toilet T constructed as described above.
First, as a preparation for making the toilet usable, a predetermined amount of activated sludge and treated water are put into the first aeration tank 16 and the second aeration tank 21 and then the first aeration tank 16 and the second aeration tank 21 3-5mm as contact filter media to promote microbial treatment in
Some of the filter medium masses X obtained by putting an appropriate amount of ceramic porous spheres into a resin net are set in a state of being immersed in the bottom of each tank.

At this time, when the temporary toilet T is installed in winter, the activity of the aerobic microorganisms tends to decrease. Therefore, about three to four times the number of the filter medium blocks X are set in the tank. In spring and autumn, the number is about one-third to one-third, and in summer, when the activity of aerobic microorganisms increases dramatically, the minimum number of filter media lumps X or the total amount outside the tank is reduced. It is desirable to take out and maintain it so that it can be used.

First, the flush water from the toilets R1 to R3 is
From the inflow port 18 at the end of the sewage inflow pipe 19 to the first aeration tank 1
Flowed down to 6. This is repeated by aeration and agitation by a diffuser 17 provided near the rear wall of the first aeration tank 16 to mix with existing activated sludge to perform sludge treatment without treatment spots. The biological treatment by the aerobic microorganisms that inhabit the individual porous spheres of the filter medium mass X is promoted, whereby the first-stage sewage treatment is performed.

When new sewage flows, the primary sewage remaining in the advancing passage 20 at the end of the first aeration tank 16 is transferred from the overflow wall 23 to the next second aeration tank 21. This treated sewage is transferred to the advection passage 25 upstream of the second aeration tank 21.
In the process of flowing down in one direction, the aeration and agitation processing from the air diffuser 28 and the biological treatment by the microorganisms in the filter medium mass X are repeated, whereby the first half of the second stage is subjected to the sewage purification processing. Then, as the direction is changed at the opening 26 of the guide barrier 24 and flows down the downstream advancing passage 27 in the opposite direction, the treated sewage is diffused by the diffuser 2
The aeration and agitation from Step 8 and the biological treatment by the microorganisms in the filter medium mass X are repeatedly performed, whereby the sewage purification treatment in the second half of the second stage is performed.

The primary sewage flowing down as described above overflows the submerged weir 30 at the end of the advection passage 27,
The water is pumped to the membrane processing tank 32 by the pump P1 installed in the tank 1. The treated sewage flowing into the membrane treatment tank 32 is filtered by the filtration membrane 34 in the membrane separation chamber 35 while aerating and cleaning the membrane surface by the diffuser 36, and the secondary sewage, which is the membrane treated water, is collected. Advection tube 4
1 flows into the treated water tank 40. At this time, the untreated water that has overflowed from the membrane treatment tank 32 is returned from the return pipe 39 to the end of the first aeration tank 16, and is again subjected to the aeration treatment.

Low tank 1 provided in each of toilets R1 to R3
When the float switch or the solenoid valve senses that the low water level of the low tank 12 has decreased due to the consumption of the second washing water,
Pump P2 operates, and the low tank 1
Wash water to 2 is supplied. Further, the filtration treatment in the membrane separation chamber 35 is performed smoothly, and the inner partition wall 4 of the treated water tank 40 is removed.
The membrane treatment water overflowing from 2 is returned to the end of the first aeration tank 16 and the tip of the second aeration tank 21.

As the circulating sewage treatment as described above is repeated, the first aeration tank 16 and the second aeration tank 2
The purification capacity of the sewage treatment in Step 1 gradually decreases, and in particular, the amount of fine fibrous sludge contained in the rinsing sewage, which is caused by dissolving and dispersing toilet paper, gradually increases and decomposes into paper sludge. As the capacity and digestion capacity decrease, the amount of paper sludge in the treated sewage accumulates, which reduces the filtration capacity of the filtration membrane 34.

Therefore, at a rate of about once a day or two days,
The solenoid valve 68 of the bypass pipe 49 is opened for a predetermined time. Then, a part of the primary treatment wastewater containing the paper sludge pumped by the pumping pump P <b> 1 is pumped to the rotating drum 52 of the microorganism treatment promotion device M via the bypass pipe 49. At this time, a filtration membrane 54 is formed on the rotating drum 52, and inside the rotating drum 52,
A large amount of ceramic porous spheres are loaded and rotated as a contact filter medium for microorganisms.

Therefore, the agitation and mixing of the primary treatment sewage and the contact filter medium is performed by the aeration from the diffuser 63 to 24 to 4.
By controlling the biological treatment to be performed intensively for about 8 hours, the decomposition and digestion treatment for the paper sludge contained in the treated wastewater is achieved. At that stage, when the solenoid valve 69 of the return pipe 62 is opened, the desorbed liquid filtered by the filtration membrane 54 of the rotary drum 52 is returned to the tip of the advancing passage 25 of the second aeration tank 21. By repeating this intermittently, the decomposition treatment of the fibrous sludge is smoothly and promptly promoted, whereby the volume of the paper sludge is reduced, and the load on the filtration membrane 34 of the membrane separation chamber 35 is reduced. Are dealing with.

Further, in the case of the circulating sewage purifying apparatus of the present invention, although being appropriately diluted by the inflow of fresh water from the hand washing machine 13, the number of users of the temporary toilet T increases and the load of sewage treatment increases. By increasing or decreasing, the PH value in the treated sewage fluctuates. For example, when the PH value is less than 5.5, the movement of microorganisms is weakened, the biological treatment efficiency is significantly reduced, and the PH value exceeds 7.5. Then, the generation of odor from the washing sewage becomes intense.

If it is detected by the pH meter 64 that the PH value of the treatment water tank 40 is out of the range of the above-mentioned pH 5.5 to 7.5, one of the solenoid valves in the chemical liquid dropping device Y is detected. The above-mentioned adverse effects are prevented by opening 67 and adding a chemical from one of the chemical tanks 65 and 66. For example, in order to maintain the PH value of the treatment water tank 40 in the range of about PH 5.5 to PH 7.5, when the pH is lower than 5.5, caustic soda or slaked lime is dropped from the chemical droplet dropping device Y to thereby reduce the microorganisms. In addition, when the pH is higher than 7.5, malic acid or dilute sulfuric acid is dropped from the chemical dropping device Y to cope with the deodorizing treatment of rinsing water.

Further, it is expected that the number of users of the temporary toilet T will increase and the new inflow of human waste and hand washing water will eventually overflow the sewage treatment tank S. In anticipation of this, the required number of filter medium lumps X are previously scattered and immersed in the first aeration tank 16 and the second aeration tank 21. For this reason, measures are taken to prevent water from escaping into the atmosphere appropriately due to the heat generated by the active biological treatment by microorganisms, and to prevent the sewage from being circulated to the outside of the tank from overflowing.

Conversely, in the summer, the amount of spontaneous transpiration is greater than the new inflow due to the warming of the treated sewage.
For this purpose, the filter medium mass X put in the first aeration tank 16 or the second aeration tank 21 is greatly reduced, and in some cases, the filter medium mass X is taken out of the tank, or in order to maintain the sewage treatment capacity. Needless to say, the maintenance and management of the sewage concentration is appropriate, for example, by replenishing fresh water.

[0039]

As described above, the present invention provides a temporary toilet provided with a sewage treatment tank at the lower part of the floor and a toilet at the upper part of the floor as described above, wherein the sewage treatment tank is provided with a first aeration tank for aerating rinsing sewage. And a second aeration tank for performing aeration while flowing the same, and a treatment tank for treating the membrane-treated water, and a circulating sewage purification device having a membrane treatment tank for pumping up the aerated primary-treated water and treating the membrane. Effluent, the effluent is efficiently purified and the sewage is treated with a membrane tank. A corresponding degree of very clear washing water is obtained.

According to the second aspect of the present invention, the contact filter medium for promoting the purification treatment of the sewage in the first aeration tank and the second aeration tank is as follows.
Since the filter medium mass in which the porous spheres are put into the net is immersed and subjected to the aeration treatment, the treatment activity by microorganisms is promoted, and the purification treatment ability is remarkably enhanced. In addition, by adjusting the input amount of the filter medium block according to the season, the heat generated by the active biological treatment by microorganisms causes the water to evaporate appropriately into the atmosphere, and is excellent in preventing the treated wastewater from flowing out of the tank. .

According to a third aspect of the present invention, the sewage treatment apparatus of the first aspect is provided with a microorganism treatment accelerating device having a rotary drum.
By mixing the contact filter medium and the primary treatment sewage pumped to the rotation drum by the rotation of the contact filter medium and the rotation drum put into the rotation drum, the contact filter medium is accumulated in the primary treatment sewage of the first aeration tank and the second aeration tank. It promotes microbial treatment of fibrous materials, reducing the volume of so-called paper sludge and reducing the load at the membrane treatment stage.

According to a fourth aspect of the present invention, a pH meter for measuring the PH value of the treated water tank and a device for dropping a chemical droplet into the treated water tank are additionally provided, and the PH value of the treated water tank is adjusted to PH5.5 to PH7.5.
When the pH is lower than 5.5, the activity of microorganisms is promoted by dropping caustic soda or slaked lime, etc. from the chemical dropping device to prevent a decrease in sewage treatment activity. Occasionally, malic acid or diluted sulfuric acid is dropped from the chemical dropping device to cope with the deodorization treatment of the circulated wastewater.

[Brief description of the drawings]

FIG. 1 is a perspective view of a temporary toilet unitized as a unit.

FIG. 2 is a plan sectional view of the toilet.

FIG. 3 is an exploded perspective view of a building in a temporary toilet.

FIG. 4 is a plan view of a sewage purification apparatus including a sewage treatment tank and a membrane treatment tank.

FIG. 5 is a schematic diagram of a circulating sewage purification device incorporating a piping system.

FIG. 6 is a side view of the microorganism processing promotion device.

FIG. 7 is a front view of the same device.

[Explanation of symbols]

 T Temporary toilet S Sewage septic tank R1 to R3 Toilet B1, B2 Blower pump P1, P2 Pumping pump M Microbial treatment promotion device 3 Underfloor box 4 Floor frame 5 Through column 6 Ceiling frame 10 Roof plate 11 Toilet bowl 12 Low tank 13 Hand washing machine 16 First aeration tank 17, 28, 36, 63 Air diffuser 18 Inlet 19 Sewage inflow pipe 20, 25, 27 Advancing passage 21 Second aeration tank 22, 42 Partition wall 23 Overflow weir 24 Guide partition wall 26 Opening 29, 37 Air supply pipe 30 Underwater Weir 31 Pump tank 32 Membrane treatment tank 33 Concave part 34 Filtration treatment membrane 35 Membrane separation chamber 38, 43, 46 Supply pipe 39, 62 Return pipe 40 Treatment water tank 41 Advection pipe 44 Filter 45 Inflow pipe 47 Drain pipe 48 Storage tank 49 Bypass pipe 50 processing tank 51 outer drum 52 rotating drum 53 stirring blade Plate 54 filtration membrane 56 electric motor 59 supporting rollers 60 angle adjusting arm 61 through hole 64 PH meter 65,66 chemical tanks 67, 68 and 69 the solenoid valve

Claims (5)

[Claims] 1. A temporary toilet having a sewage treatment tank at the lower part of the floor and a toilet at the upper part of the floor, wherein the sewage treatment tank is a first aeration tank for performing aeration treatment of rinsing sewage, and aeration is performed while flowing the same. A circulating sewage purification apparatus comprising: a second aeration tank for treatment; and a treatment tank for treating membrane treatment water, and a membrane treatment tank for pumping up the aerated primary treatment water for membrane treatment. 2. The circulating sewage purifying apparatus according to claim 1, wherein a filter medium lump in which porous spheres are charged into a net is immersed as a contact filter medium for the treated sewage in the first aeration tank and the second aeration tank. 3. A sewage purifying apparatus is provided with a microbial treatment accelerating device, the microbial treatment accelerating device is supported on a treatment tank such that an outer drum is adjustable in angle, and a rotary drum is rotatably supported inside the outer drum. Then, a filtration membrane is stretched over the rotating drum, and the contact filter medium charged into the rotating drum and the rotation of the rotating drum promote the microbial treatment of the primary treatment wastewater pumped up to the rotating drum. The circulation type sewage purification apparatus according to claim 1. 4. A sewage purifying apparatus, wherein a treatment liquid tank is provided with a chemical liquid dropping device, and the pH value of the treatment water tank is adjusted to 5.5 to PH.
To keep it at around 7.5, when PH is less than 5.5,
2. The circulating sewage purification apparatus according to claim 1, wherein caustic soda or slaked lime is dropped from the drug dropping device, and malic acid or diluted sulfuric acid is dropped from the drug dropping device when the pH is higher than 7.5. 5. A temporary toilet having a sewage treatment tank at a lower part of a floor and a toilet at an upper part of a floor, wherein the sewage treatment tank is provided with a first aeration tank for performing aeration treatment of rinsing sewage, and aeration while flowing the same. A second aeration tank to be treated, and a membrane treatment tank, which is partitioned into a treatment water tank for membrane treatment water, and includes a membrane treatment tank for pumping up the primary treatment water subjected to aeration treatment to perform membrane treatment, wherein the first aeration tank and the second aeration tank include: As a contact filter medium of the treated sewage, a filter medium block obtained by charging a ceramic porous sphere into a resin net is immersed, and a microbial treatment accelerating device provided with a rotary drum is provided in the sewage purification device, and a porous sphere charged into the rotary drum is provided. A circulating sewage purification apparatus characterized in that the rotation of the rotary drum promotes the microbial treatment of the primary sewage pumped to the rotary drum.