JP2003313917A - Circulatory purifier - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a circulatory purifier capable of completely making solid- liquid separation of sanitary wastewater decomposed with the bacteria to purify into clean water without containing any impurity, circulating the water to reuse it as flush water and using it as washing water for cleaning a toilet room or washing a circulatory septic tank. <P>SOLUTION: The circulatory purifier 1 installed in a flush toilet or a small flush toilet temporary room or the existing toilet room includes a decomposed settling tank 2 for decomposing the sanitary wastewater with the bacteria and making settling separation of decomposed sludge and water, a membrane separating tank 4 filtering top supplied from the decomposed settling tank 2 by means of a first pumping device 11 by a membrane separator 14 placed inside of the tank, a circulation system is formed of a water storage tank 3 for storing treated water by the membrane separating tank 4 and a second pumping device 23 for supplying the water in the water storage tank 3 as flush water and a water sharing means 26 for taking out the water in the water storage tank 3 as washing water to the second pumping device 23. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is installed in a flush toilet or a simple flush toilet or an existing toilet to purify sewage using biological treatment and membrane separation, and to purify the purified water again. The present invention relates to a circulation type purification device which circulates so as to be used for washing.

[0002]

2. Description of the Related Art Construction sites, various event venues, or
Temporary toilets installed at beaches and the like have recently become flush-type or simple flush-type instead of the fecal urine storage type because of environmental hygiene issues. These flush-type temporary toilets are equipped with a toilet tank for storing dirty water at the bottom of the toilet, and when dirty water is retained to some extent, they are taken to a urine treatment plant or a septic tank is installed. Some had been discharged after water treatment.

However, even in the case of such a flush toilet or a simple flush toilet, an odor is generated from the accumulated sewage as in the case of the conventional storage-type toilet, so an auxiliary equipment such as a deodorizing device must be provided. Also, because it is flushed with water, a large toilet bowl had to be installed.

Also, in the case of installing a septic tank,
It could not be discharged without using a type-approved product. Therefore, there are many problems of installation space and installation cost, and it is currently difficult to popularize washing with water.

After that, in order to eliminate these drawbacks, as disclosed in Japanese Utility Model Laid-Open No. 7-9494, bacteria are used to decompose filth to purify sewage, while the drooping wall and the standing wall are separated. The sludge and the supernatant water that have been decomposed while passing water between the partition walls consisting of 2) are separated and separated, and the supernatant water is circulated so that it can be reused for washing, Circulating septic tanks have been provided that are reusable, use less water, and eliminate foul odors.

[0006]

However, in such a circulation type septic tank, solid-liquid separation is performed only by separation of sludge and supernatant water by sedimentation, so that sufficient separation is not made and impurities are still mixed. There was a drawback that the water in the filled state would flow into the flush tank. Further, since it is not possible to secure a water source at the construction site, various event venues, beaches, etc., it was difficult to secure sufficient washing water when cleaning the temporary toilet or removing the temporary toilet.

In view of the above-mentioned problems and the like, the present invention completely solid-liquid separates wastewater decomposed by bacteria,
Recycling purification that purifies the water without impurities and circulates it so that it can be reused as water for rinsing, and can also be used as cleaning water when cleaning toilets or cleaning recirculating septic tanks. The purpose is to provide a device.

[0008]

In order to solve the above-mentioned problems, the circulation type purifying apparatus of the present invention according to claim 1 is a circulation type installed in a flush or simple flush type temporary toilet or an existing toilet. A decontamination tank for decomposing filth caused by bacteria and sedimentation and separation of decomposed sludge and water, and a supernatant water supplied from the decomposition and sedimentation tank by the first pumping device into the tank. A circulation system is formed by a membrane separation tank for filtering with the membrane separation device arranged, a storage tank for storing water treated in the membrane separation tank, and a second pumping device for supplying water from the storage tank as washing water. The second pumping device is provided with water diversion means for taking out water in the storage tank as washing water.

Further, in the circulation type purification apparatus of the present invention according to claim 2, a membrane dipping body for filtering the supernatant water supplied from the decomposition and settling tank by the membrane separation apparatus by using the head of the membrane separation tank as a driving force, and the membrane. And an aeration device installed below the immersion body.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 4, the circulation type purifying apparatus 1 is attached to the lower portion and the back portion of the temporary toilet A, or is installed separately. The circulation type purification device 1 mainly comprises a decomposition settling tank 2, a storage tank 3, and a membrane separation tank 4.
The decomposition / sedimentation tank 2 and the storage tank 3 are incorporated into an integrated tank made of synthetic resin or the like, and are formed in a separated state by partition walls 29 as sealed tanks.

The inside of the decomposition settling tank 2 is divided into a plurality of compartments 5 by compartment walls, and the compartment 5 is adjacent to the first compartment 5a into which the dirty water from the toilet first flows. Then, there are three second compartments 5b into which water flows in next, and a third compartment 5c adjacent to which the water finally flows in. The first and second compartments 5a and 5b are filled with a bacterium-adhered bed material 6 to which bacteria are attached. In addition, compartment 5
It is also possible to omit a and 5b and to directly flow the sewage into the compartment 5c.

The partition wall includes a hanging wall 8 hanging from a top plate 7 of the decomposition settling tank 2 and a standing wall 10 standing on a bottom plate 9 of the decomposition settling tank 2 and arranged in parallel with each other at appropriate intervals. Appropriate gaps are provided between the hanging wall 8 and the bottom plate 9 and between the standing wall 10 and the top plate 7.

In the decomposition / sedimentation tank 2, the wastewater that has flowed into the first compartment 5a is decomposed by the bacteria of the bed material 6 to which the bacteria have adhered, and the decomposed sludge settles on the bottom of the first compartment 5a, and the compartment 5a. When the water level increases, and the water exceeds the standing wall 10, the clear water flows into the adjacent second compartment 5b. Similarly, in the second compartment 5b, decomposition and sedimentation occur and the third compartment
The clear water reaches the compartment 5c.

Here, an example of a section of the decomposition settling tank 2 is shown in FIG.
And, as shown in FIG. 5, a first rectangular compartment 5a having a rectangular plan shape is arranged at a substantially central portion in the decomposition and settling tank 2 having a rectangular rectangular shape. The second L-shaped planar shape is provided on the side surface which is in contact with and surrounds the side surface.
The compartment 5b is arranged, and the third compartment 5c having a substantially L-shaped plane is arranged in the remaining portion. The hanging wall 8 and the standing wall 10 partition between the first compartment 5a and the second compartment 5b and between the second compartment 5b and the third compartment 5c, and the first compartment The chamber 5a and the third compartment 5c are completely partitioned so that water does not move.

Therefore, the central first inside the decomposition settling tank 2
The water that has flowed into the compartment 5a flows into the second compartment 5b on the right side in the drawing, then bends through the lower right corner of the decomposition settling tank 2 and flows into the third compartment 5c on the left side. It should be noted that the arrangement of the compartments 5 and the movement path of water are merely examples, and are not limited thereto.

The third compartment 5c has a second compartment 5b.
The 1st pumping apparatus 11 is installed in the position farthest from the standing wall 10 between. This first pumping device 11 is
It is composed of a first submersible pump 12 arranged in the third compartment 5c and a water supply pipe 13 for sending water pumped by the submersible pump 12 to the membrane separation tank 4. The submersible pump 12 has a liquid level control switch. The liquid level control switch prevents the water level in the third compartment 5c from exceeding the standing wall 10 between the third compartment 5c and the second compartment 5b. At the same time as controlling the activation of 12, pumping is stopped when the water level drops to a predetermined position.

The membrane separation tank 4 is a vertically long closed water tank capable of storing an appropriate amount of water sent from the decomposition / sedimentation tank 2 through the water supply pipe 13, and has a membrane separation device 14 installed therein. . The membrane separation device 14 vertically installs a plurality of membrane dipping bodies 15 formed by stretching a membrane permeable to only small molecules such as water on both sides of a frame material in the center of the membrane separation tank 4, A water collecting device 16 that collects the water that has permeated the membrane immersion body 15 by using the water head of the separation tank 4 as a driving force and sends the collected water to the storage tank 3 is attached to the upper portion of each membrane immersion body 15. The permeated water from the membrane 15 is collected from the upper nozzle of each membrane immersion body through the tube to the water collecting device 16. An aeration device 17 is installed below the membrane immersion body 15. In the present embodiment, the driving force for membrane filtration is head (positive pressure) filtration, but suction (negative pressure) filtration by a pump may be used.

The membrane separating device 14 collects only the water that has permeated the membrane-immersed body 15 by the water collecting device 16, and the water supply pipe 3
The water to be treated is completely biologically treated and solid-liquid separated by passing the water through the sterilizer 31 provided in the middle of 0 to the storage tank 3. The aeration devices 17 and 28 clean the membrane dip 15 by the air diffused while vibrating to prevent the membrane from being clogged, and supply oxygen for biological treatment.

In the membrane separation apparatus 14 of this embodiment, five membrane dipping bodies with an effective filtration area of 0.4 square meters are installed in the membrane separation tank 4 having a maximum capacity of 370 liters, and the treatment capacity is 1 hour. It is about 42 liters.

Further, an overflow pipe 18 is provided on the upper side wall of the membrane separation tank 4 for overflowing and discharging when the amount of water exceeds an appropriate amount, and a bottom portion can be opened and closed by a cock 20 at the time of removal or cleaning. A drainage pipe 19 for discharging the water in the tank is provided, and these are joined to one water discharge pipe 21 to reach the decomposition / sedimentation tank 2.

The storage tank 3 stores the water purified and regenerated in the membrane separation tank 4, and the storage tank 3 is provided with a flush tank 22 in order to use the internal water as flush water for the temporary toilet A. A second pumping device 23 for pumping is arranged. The second pumping device 23 is the second submersible pump 2 arranged in the storage tank 3.
4 and a water supply pipe 25 for sending water to be pumped by the submersible pump 24 to the washing tank 22.

The flush tank 22 is provided with a water supply detection mechanism for detecting the water level in the tank, and the water supply detection mechanism and the operation of the submersible pump 24 are interlocked with each other, so that when the water in the flush tank 22 runs out of water, The pump 24 operates to automatically draw water into the washing tank 22.

A return pipe 26 reaching the decomposition / sedimentation tank 2 is branched on the way of the water supply pipe 25, and a switching cock 27 and a return pipe 26 provided at the branch portion constitute a water dividing means. Switching cock 27 when removing or cleaning temporary toilet A
Is operated to discharge the water in the tank to the decomposition and settling tank 2 and use it as washing water. By providing the tip of the return pipe 26 of the water diversion means in the vicinity of the temporary toilet A, the water in the tank can be supplied as cleaning water when cleaning the toilet.

The capacity of the storage tank 3 of this embodiment is set to about 6 times that of the membrane separation tank 4 which has a processing capacity of 42 liters per hour. On the other hand, the washing tank 22
The capacity of the storage tank 3 is set to about 10 liters.
Compensates for the solid-liquid processing speed of the membrane separation device 4 so that the water used for washing is sufficiently in time. Further, in the simple flush toilet, the amount of water used further decreases, so that the device can be made compact by following it.

[0025]

As described above, according to the present invention, water containing filth used for washing is treated by biodegradation, sedimentation separation and membrane separation to be purified water which is free of impurities and circulated. By reusing as wash water, it is possible to set up a flush toilet or a simple flush toilet even in a place with no water source, or by using it as flush water when cleaning the toilet or cleaning the circulation septic tank, Even in a place where there is no water source, it is possible to easily clean the toilet and the circulating septic tank.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a state of being installed in a temporary toilet according to an embodiment of the present invention.

FIG. 2 is a side view of the same embodiment.

FIG. 3 is a rear view of the same embodiment.

FIG. 4 is a cross-sectional view of the decomposition settling tank and the storage tank of the same embodiment.

5 is a cross-sectional view taken along the line AA in FIG.

[Explanation of symbols]

1 Circulation type purifier 2 Decomposition sedimentation tank 3 storage tanks 4 membrane separation tank 5 compartments 5a first compartment 5b Second compartment 5c Third compartment 6 Bacterial floor material 7 Top plate 8 hanging wall 9 Bottom plate 10 standing wall 11 Pumping device 12 Submersible pump 13 Water supply pipe 14 Membrane separation device 15 Membrane soaker 16 Water collecting device 17 Aerator 18 Overflow pipe 19 drainage pipe 20 cooks 21 Water discharge pipe 22 Washing tank 23 Pumping device 24 Submersible pump 25 water pipe 26 Return pipe 27 Switch cock 28 Aerator motor 29 partition walls 30 water pipe 31 Sterilizer 32 Aeration pipe A temporary toilet

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Masahiro Yata             2-47 Shikitsuhigashi, Naniwa-ku, Osaka-shi, Osaka             Kubota Water Treatment Engineering Department F-term (reference) 2D039 AC09 AC11 DA00                 4D003 AA01 AB13 BA02 CA03 DA19                       FA06                 4D006 GA07 HA41 HA93 HA95 JA31Z                       JA71 KA01 KA43 KB22 KB25                       KC14 MA03 PA01 PB08                 4D027 AA06

Claims (2)

[Claims] 1. A circulating type purification device installed in a flush or simple flush type temporary toilet or an existing toilet, which decomposes sewage by bacteria and sedimentation and separation of decomposed sludge and water. A settling tank, a membrane separation tank for filtering the supernatant water supplied from the decomposition settling tank by the first pumping device by a membrane separation device arranged in the tank, and a storage tank for storing the water treated in the membrane separation tank, Second supply of water from storage tank as flush water
And a pumping device for forming a circulation system, and the second pumping device is provided with water diversion means for taking out water in the storage tank as washing water. 2. The membrane separator has a membrane dip that filters the supernatant water supplied from the decomposition and settling tank using the water head in the membrane separation tank as a driving force, and an aerator installed below the membrane dip. The circulating purification apparatus according to claim 1, which is characterized in that.