JP2004050177A - Sewage cleaning and regeneration apparatus, and circulating type flash toilet unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact sewage cleaning and regeneration apparatus for efficiently decomposing/evaporating sewage in an aeration tank and an evaporation reaction tank, and also to provide a circulating type flash toilet unit. <P>SOLUTION: In the sewage cleaning and regeneration apparatus for treating sewage in an aeration tank and an evaporation reaction tank, a microorganism holding material is provided in the stagnation tank of the aeration tank non-uniformly. Further, a second bed is provided in the vicinity of the treated water inflow position of the evaporation reaction tank in which woody chips are laid to store temporarily increased treated water. A reticulated microorganism holding material is laid on the second bed so as to enhance a cleaning function. <P>COPYRIGHT: (C)2004,JPO

Description

The present invention relates to an apparatus for suppressing generation of offensive odor due to sewage and purifying and regenerating without generating drainage and sludge.

In conventional purification and regeneration equipment, household wastewater and the like are biologically treated in a treatment medium mainly composed of wood chips, but the wastewater to be treated is not directly exposed to the atmosphere but is treated inside the treatment medium. To maintain a state suitable for the propagation environment of microorganisms (for example, see Patent Document 1).

In some systems that reuse purified water for purifying sewage, sewage is quickly purified by disposing a porous filter medium in a tank into which activated air is blown (see, for example, Patent Document 2). ).
Japanese Patent Publication No. 3-73358 JP-A-10-286566

(4) In the above-described conventional configuration, there is a problem that the apparatus needs to be upsized in order to perform a sufficient purification process, or that the purification is not sufficiently performed when the processing amount is suddenly increased.

In the configuration in which the wastewater introduction pipe is embedded in the woody piece as shown in FIG. 1 in Patent Document 1, the wastewater from the tip position of the wastewater introduction pipe, that is, the wastewater from the deeply buried position and the wastewater from the shallowly buried position, The distance to the drain differs greatly. Therefore, if the distance to the drainage pipe is set so that the wastewater from the inlet pipe tip position can be sufficiently treated, the wastewater from the shallow buried position will pass an unnecessarily long distance, and the space in the treatment tank Is not effectively used, and the processing tank becomes large. Further, when the wastewater to be treated increases suddenly, the sludge tends to be clogged at the outlet from the wastewater introduction pipe.

In the configuration in which active air is directly blown into the porous filter medium into the aeration tank as in Patent Document 2, even if dirt or flocs adhere to the porous filter medium, the porous filter medium is sieved off by the active air. Move to the tank. Therefore, a sedimentation tank or the like for removing floc by precipitation is required.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a compact sewage purification and regeneration apparatus that can efficiently purify sewage and reuse it as washing water. Another object of the present invention is to provide an odorless, drainage-free and sludge-free circulation type flush toilet unit by combining a toilet and a sewage purification / regeneration device.

(4) The present invention relates to a sewage purification and regenerating apparatus including an aeration tank for deodorizing night soil and purifying it by the action of microorganisms, and an evaporation reaction tank for purifying sewage by the action of microorganisms and evaporating naturally.

Further, the present invention provides a toilet, a waste tank for storing waste water containing flush water and waste from the toilet, a removal tank for removing impurities other than human waste, toilet paper, and wash water, and an aeration tank for aerating the waste water. And a housing for accommodating the toilet and each of the tanks, and an evaporating reaction tank for purifying treated water treated in the aeration tank by the action of microorganisms and evaporating spontaneously. Related to a flush type flush toilet unit.

In order to achieve the above object, in the sewage purification / regeneration apparatus of the present invention according to claim 1, the aeration tank includes a retention tank and a stirring tank, and the microorganism holding material is ubiquitously present in the retention tank. It is characterized by the following.

The sewage purification / regeneration apparatus of the present invention according to claim 2 is characterized in that the microorganism holding material is composed of a core material and a number of sapwood.

The sewage purification / regeneration apparatus of the present invention according to claim 3 is characterized in that the evaporation reaction tank has a wood chip layer.

In the sewage purification / regeneration apparatus according to the present invention, the first layer on which the wood chips are spread and a member different from the first layer are spread at a position where the treated water flows and longer in the horizontal direction than in the vertical direction. And a second layer.

汚 A sewage purification / regeneration apparatus according to claim 5 of the present invention is characterized in that the member of the second layer is a three-dimensional net-like structural material made of synthetic resin.

The sewage purification / regeneration apparatus of the present invention according to claim 6 is characterized in that the member of the second layer is a mesh-like microorganism holding material.

The sewage purification / regeneration device according to the present invention described in claim 7 is characterized in that a regulation frame is provided at a horizontal boundary position of the second layer.

The circulation type flush toilet unit of the present invention according to claim 8 is a circulation type flush toilet unit having a toilet bowl, a waste tank, a removal tank, an aeration tank, an evaporation reaction tank, and a housing, wherein the aeration tank is a residence tank. And a stirring tank, wherein the microorganism holding material is ubiquitous in the retention tank, and the mesh-like microorganism holding material is spread around the inflow position of the treated water in the evaporation reaction tank.

The sewage purification / regeneration apparatus according to the present invention is characterized in that charcoal for decolorization is arranged in the evaporation reaction tank near the position where the treated water flows.

The sewage purification and regeneration apparatus of the present invention according to claim 10 is further characterized by further comprising a decolorizing tank containing charcoal of coniferous wood.

As an effect of the present invention, the purification load on the evaporation reaction tank is reduced, and the entire sewage purification / regeneration apparatus can be reduced in size, so that it can be easily applied to ordinary households and mountain huts. In addition, by providing a storage function near the inflow position of the treated water in the evaporation reaction tank, even if the use of the toilet temporarily increases suddenly, the purification capacity can be maintained without the treated water overflowing. In addition, by combining a toilet with this sewage purification / regeneration device, it is possible to provide an odorless, drainage-free and sludge-free circulation type flush toilet unit. Therefore, since there is no problem of drainage, there is an advantage that it can be easily applied to agricultural and mountain fishing villages and sightseeing spots without sewerage facilities.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a perspective view of a sewage purification and regeneration apparatus of the present invention as viewed from a side. In FIG. 1, an aeration tank 1 and an evaporation reaction tank 2 are connected respectively. Although each tank is substantially hollow, the aeration layer has a vertically long prismatic shape, and the evaporation reaction tank has a cylindrical shape. The height of each tank is about 2000 mm. Further, even if the height difference and the interval are restricted due to the circumstances such as the place where each tank is installed, the layout can be freely performed through the piping.

The sewage discharged from the toilet is introduced into the upper part of the aeration tank through the pump 3. The inside of the aeration tank is separated into two retention tanks 4 and a stirring tank 5 located between them. Microorganism holding material 6 is ubiquitous in the retention tank, and a blower pipe 7 is provided at the bottom of the stirring tank. Are located.

(4) The microorganism holding material 6 is a contact material for drainage treatment known in Japanese Patent Application Laid-Open No. 2001-191090, etc., and performs sludge treatment by the action of microorganisms held on its surface. FIG. 2 is a side view and a top view of the microorganism holding material 6. It is composed of a warp serving as a core material and a number of wefts projecting from the warp in a spiral radial and swingable manner. A large number of wefts are woven so as to radially protrude radially at predetermined intervals using a warp as a core material. This weft is used as sapwood to extend the processing range. Further, since the leading end of the weft is not fixed, the leading end of the weft is fluctuated by the flow of treated water or the like. That is, when the contact material oscillates in the water, the attached sludge gradually peels off from the tip portion, and therefore, the contact material can maintain a stable amount of attached sludge.

In the retention tank 4, a plurality of microorganism holding materials are attached between an upper fixed portion and a lower fixed portion (not shown). The weft extends in the depth direction of the storage tank, and the weft extends to the inner wall of the tank or near the partition plate 8 with the stirring tank, and is distributed evenly in the storage tank. In FIG. 1, the reason why the weft is directed obliquely downward is that sludge and the like are attached to the weft by the drainage treatment and are warped by weight.

The sewage alternately circulates between the retention tank 4 and the stirring tank 5, during which sewage undergoes physical degradation and chemical degradation by aerobic bacteria. Aeration is performed by blowing air into water from a blower pipe 7 at the bottom of the stirring tank. In addition, the jet of air generates a water flow from the bottom to the top in the stirring tank, and the sewage reaching the upper end of the partition plate 8 is returned to the left and right retention tanks over the upper end of the partition plate. A water flow is formed from the top to the bottom in the retention tank, and the sludge is reduced by coming into contact with the microorganism holding material 6 during the downflow.

The sewage passes through the lower end of the partition plate from the storage tank and reaches the stirring tank. The bottom surface from the stagnant tank to the stirring tank is inclined toward the stirring tank, and contaminants that have not been sufficiently decomposed move to the bottom of the stirring tank along the inclination. Bubbles spouted from the blower pipe are used to agitate the dirt that has settled on the bottom surface, and the solids of the dirt collide with each other to be decomposed. By reducing the size of the waste, the waste can easily adhere to the microorganism holding material, and as a result, the decomposition treatment by the microorganism is promoted.

Because the microorganism holding material is placed in the retention tank, the ejected air bubbles do not directly hit the microorganism holding material, and the separation of dirt is suppressed. When the filth adheres to a predetermined amount or more, the surplus is dropped downward due to the weft sway. The waste circulates through the stirring tank and adheres to the weft again.

(4) The supernatant of the aeration tank is led to the evaporation reaction tank 2 through the piping above the retention tank on the right side of the aeration tank 1 in the drawing. In the evaporating reaction tank, a pipe is once extended to the center of the evaporating reaction tank, and is connected to a sprinkling pipe that branches radially in eight directions in a horizontal plane. The treated water is sprinkled by the sprinkling holes provided in the sprinkling pipe.

The evaporating reaction tank 2 is a bottomed cylindrical body having a diameter of about 1800 mm and a height of about 2000 mm. The reaction section 9 on which cedar chips are spread and treated water that has permeated the reaction section and dropped into the next water tank 12 And a treated water receiving portion 10 having an inclined bottom surface for guiding.
A punching metal having a hole with a diameter of about 2 mm is used as the outer wall of the reaction section. A well-known cedar chip having a size of 2 to 5 mm is laid inside the reaction tank. Since the cedar chips are larger than the holes of the punched metal, they do not flow out of the evaporation reaction tank.

The treated water is gradually decomposed into carbon dioxide gas and moisture by microorganisms living in the cedar chips in the process of gradually penetrating the cedar chips from top to bottom. Carbon dioxide gas is released from the side holes, and water is stored in the water storage tank via the treated water receiving portion. Therefore, there is no residual sewage, so that no odor is generated and there is no accumulation as sludge.
On the inner surface of the reaction section, there is provided an inclined plate 11 inclined downward toward the center of the reaction tank. When the treated water penetrates, the inclined plate functions to prevent the treated water from leaking from the side surface while ensuring air permeability.

A part of the bottom of the reaction part is also punched metal, and the permeated treated water drops from the bottom. The treated water receiving section 10 receives treated water dropped from the entire bottom surface of the reaction section 9. The bottom of the treated water receiving portion is inclined toward the pipe leading to the water storage tank 12. The treated water collected in the water storage tank will be reused as toilet flush water.

(4) In this embodiment, the purification capacity in the aeration tank was improved, so that the processing load in the evaporation reaction tank could be reduced. Therefore, the size of the evaporation reaction tank can be reduced, and the entire apparatus can be made compact.

FIG. 3 shows an example in which the second layer 13 is provided in the evaporation reaction tank, and is a perspective view seen from the side. The second layer 13 is formed in the upper part of the first layer 14 on which wood chips are laid, and is filled with a network structure material over a range of about 1000 mm in diameter and about 200 mm in depth.

The treated water that has flowed into the evaporation reaction tank permeates the wood chip layer through the layer of the network structure material. The network structure material is made of a synthetic resin having water retention, and has a three-dimensional structure so as to be bulky. Since it is made of a synthetic resin, it can be made of a strong structural material, and a sufficient volume can be secured even when it is embedded in the wood chip layer.

Although the amount of permeation of the wood chip layer per hour is constant, the number of users per hour of the toilet is not always constant. If the number of users increases rapidly, if the treated water flows directly into the wood chip layer, it cannot be completely processed by the wood chip layer, and the treated water flows out from the side of the reaction section. Attempting to increase the processing capacity of the wood chip layer so as to cope with a temporary increase in use will result in an increase in the size of the entire apparatus. Therefore, a second layer for temporarily storing treated water before flowing into the wood chip layer was provided. In order to increase the permeation distance in the wood chip layer and make effective use of the second layer, it is desirable that the second layer be extended more horizontally in the horizontal direction than in the vertical direction at a location near the inflow position of the treated water. In the present embodiment, it is possible to cope with a temporary sudden increase in the number of employees while having a compact size.

When a microorganism holding material is used for the second layer of the evaporation reaction tank, a purification function can be provided in addition to the water storage function. FIG. 4 is an external view of the mesh-like microorganism holding material. A connecting thread 16 for attaching sludge to the mesh-like core sheet 15 is entangled. By making the core material mesh-like, a fine space is formed to improve the adhesion of sludge. Further, a food chain of microorganisms is formed in the connecting yarn, and the sludge is decomposed. This holding material was laminated in several layers and used as a second layer as a bulky and three-dimensional structure. About an aeration tank, etc., it is the same as that of 1st Embodiment.

When the degree of contamination of the treated water was measured, the values of BOD, COD and SS were reduced by 70 to 80% in the aeration tank, and the remaining 30 to 20% were reduced in the evaporation reactor of the present embodiment. That is, the contamination that could not be completely purified in the aeration tank could be purified in the second layer of the evaporation reaction tank. In addition, as the mesh-like microorganism holding material, a contact material described in JP-A-2002-136986 can be used.

FIG. 5 shows an example in which a regulating frame 17 is provided around the second layer of the evaporation reaction tank, and is a perspective view seen from the side of the evaporation reaction tank. The second layer 13 of the evaporation reaction tank is covered with a mesh-like microorganism holding material as in Example 3, and a regulating frame 17 is provided around the same. This control frame is made of stainless steel, has a diameter of about 1000 mm and a height of about 200 mm.

This restriction frame prevents treated water from flowing out from the side even if the treated water temporarily flows in a large amount exceeding the volume of the second layer, and can store the treated water until the treatment proceeds in the first layer.

FIG. 6 shows an example in which a decolorization tank 19 is provided next to the evaporation reaction tank, and is a perspective view seen from the side. A treated water guide groove 18 of the evaporating reaction tank is provided on the outer periphery of the bottom, and the treated water in the water storage tank is pumped up by a pump and led to a decolorizing tank 19.

The reaction part of the evaporation reaction tank was the same as in Example 4, but the entire bottom was made of a plate. Further, since the bottom of the inclined plate inside the reaction section is removed, the treated water that has passed through the wood chip layer flows out from the side near the bottom of the reaction section. A groove 18 having a width of 20 mm and a height of 30 mm was formed around the reaction section so that the treated water was guided to a water storage tank. Since the structure of the evaporation reaction tank is relatively simple, the production cost is reduced. In addition, if the evaporation reaction tanks have the same height, this configuration can make the height of the reaction part higher, so that the decomposition action by the wood chip layer can be further promoted.

The water treated in the evaporative reaction tank is turned brown by the pigment in the night soil and the pigment component of the tree eluted from the wood chips. Although it can be used as washing water without any problems, some users use hated colored washing water, so a decolorization tank was provided.
The decolorization tank 19 includes a water receiving section 20, a decolorization section 21, and a water storage section 22 in order from the top. The water treated in the evaporation reaction tank is guided to the water receiving section 20 by a pump, and is decolorized by permeating the activated carbon layer in the decolorizing section 21. Since the amount of permeation per unit time of the decolorizing section 21 is constant, any more treated water is collected in the water receiving section 20. On the other hand, the water that has fallen naturally is stored in the water storage unit 22.

FIG. 7 is a perspective view of the circulation type flush toilet unit of the present invention as viewed from the side.
A toilet 23, a waste tank 24 for temporarily storing waste, a removal tank 25 for removing undissolved impurities, an aeration tank 1 having the same configuration as in the first embodiment, and having the same configuration as the fourth embodiment. It has an evaporation reaction tank 2, a decolorizing tank 19 for decolorizing treated water, and a housing 26 for accommodating a toilet bowl and each tank.

The removal tank 25 is a tank for removing contaminants other than human waste, toilet paper, and washing water before entering processing after the aeration tank. The water in the water storage section 22 of the decolorizing tank 19 is guided to a washing water tank 28 by a pipe 27 and a water supply pump.

By disposing the microorganism holding material 6 in the aeration tank 1, the processing load on the evaporative reaction tank 2 is reduced, and the size of the evaporative reaction tank, and thus the entire toilet unit, can be reduced. But installation is easy. In addition, since the regulation frame 17 is provided in the evaporation reaction tank and filled with the mesh-like microorganism holding material, the wastewater is purified, and even if a large amount of treated water temporarily flows in, the treated water is temporarily stored. Outflow from the side is prevented. Further, the decolorization tank 19 described in the fifth embodiment is connected next to the evaporation reaction tank.

FIG. 8 is a diagram of the seventh embodiment. The joint tank A is an integrated one of an evaporation reaction tank, a decolorizing tank, and a water storage tank. Aeration tank 1 was arranged on the side near the toilet, and joint tank A was arranged next to it. The joint tank A is composed of a reaction section 9, a decoloring section 21, and a water storage section 22 in order from the top, and the treated water is treated in each section and descends sequentially.

The heights of the aeration tank 1 and the combined tank A are about 2300 mm, respectively, and sewage flowing from the toilet is first treated in the aeration tank 1. The structure inside the aeration tank is the same as that of the first embodiment. The joint tank A has a reaction section 9 having a height of about 1200 mm, a bleaching section 21 having a height of about 700 mm, and a water storage section 22 having a height of about 400 mm. The stainless steel plate that separates the decolorizing section 21 and the water storage section 22 is provided with a large number of holes having a diameter of 2 mm. The treated water guided from the aeration tank is guided to the uppermost part of the reaction part 9, thereafter treated in order of the reaction part and the decolorizing part, and finally stored in the water storage part 22 at the bottom part.

The configuration of the reaction unit 9 is the same as that of the fourth embodiment. In the present embodiment, the microorganisms in the aeration tank process the wastewater to 70 to 80% of the target purification level, so that the processing capacity required in the subsequent reaction unit can be relatively small. Therefore, the size of the reaction part could be reduced.

Further, in Example 7, since the decolorizing section was disposed below the reaction section, a pump for lifting treated water was not required, and the space for installing the decolorizing tank could be reduced as compared with a case where the decolorizing section was separately provided. Was.

The bleaching section 21 contains cedar activated carbon. The activated carbon decolorizes the pigment component of the treated water, and at the same time, purifies the treated water by the adsorption action of the activated carbon.

The water storage unit 22 stores the treated water, and supplies the stored water to the toilet using a low pump or a pressure pump (not shown) as necessary.

In the seventh embodiment, the activated carbon of cedar is used in the decolorized portion, so that the decolorized portion also has the effect of the biodegradation treatment. The BOD (biochemical oxygen demand) and SS (suspended solids) were measured before and after the decolorization part. The BOD of the prototype No. 1 was measured from 23 mg / L to 7 mg / L after 6 months from the start of use. Was reduced from 20 mg / L to 7 mg / L. In the second prototype, BOD decreased from 23 mg / L to 13 mg / L and SS decreased from 20 mg / L to 10 mg / L in the measurement two months after the start of use. From all of the data, the ability to purify organic substances by the decolorized portion was confirmed.

FIG. 9 is a diagram of the eighth embodiment. The joint tank B has an integrated aeration tank, evaporation reaction tank, water storage tank, and decolorization tank. The height of the joint tank B is about 1800 mm, and sewage flowing from the toilet is first treated in the aeration tank 1. The treated water treated in the aeration tank is guided from above to the reaction section 9, and the water treated in the reaction section falls into a water storage section 22 arranged on the entire bottom surface of the apparatus.

The structure of the aeration tank 1 is the same as that of the first embodiment.

A restriction frame 17 similar to that of Example 4 was provided near the position where the treated water flows in the reaction section. In this embodiment, the height of the regulation frame is increased to about 400 mm. A cedar activated carbon 29 treated at a high temperature of 1000 ° C. or more was accommodated in the regulatory framework. Due to the volume surrounded by the restriction frame, even if a large amount of treated water flows into the reaction section, it can be temporarily stored, and the treated water can be prevented from flowing out from the side surface. In addition, the treated water is decolorized by the activated carbon in the regulation frame.

Larch charcoal was spread below and around the regulatory framework. The side surface of the reaction section 9 is made of punching metal, and evaporates the decomposed carbon dioxide gas and moisture through holes in the side surface. Further, the treated water is further purified by the charcoal adsorption effect.

The water storage unit 22 has a height of about 300 mm and stores the treated water. The plate (stainless steel) separating the reaction section 9 and the water storage section 22 is provided with a large number of holes having a diameter of 2 mm.

In the case of a household excreta treatment system with five family members, using the toilet seven times a day for each person, if the average amount of water used at one time is 5L and the average amount of human waste at one time is 0.3L, 175L a day To evaporate 10.5 L. Assuming that the capacity of each tank is 500L for the aeration tank, 400L for the reaction section, and 300L for the water storage section, it is possible to aerate 40 times a day and store 40 times of the available water.

Household waste disposal equipment does not disturb the landscape if buried underground, and reduces the need to keep warm even in winter. If there is space indoors, it may be installed indoors, or it may be installed in a shed integrated with a toilet.

In the embodiment, cedar chips are used as the wood chips spread on the reaction part, but pine chips may be used instead, or they may be used together. Pine, like cedar, has wood cells distributed in a grid pattern, so it is easy to hold microorganisms. Here, pine includes larch as well as black pine and red pine.

In addition, it is desirable that the microorganism holding material be disposed in a horizontal and vertical direction so as to function as much as possible. In general, it is efficient to spread evenly so as not to make a difference in the amount of sludge attached. In the embodiment, the entire area is expanded in the retention tank, but there may be an area without a microorganism holding material as long as the processing capacity is sufficient. The structure is not limited to the fiber material as long as the microorganism holding material is ubiquitous in the tank.

Although the aeration tank has a stirring tank at the center and retention tanks on the left and right sides thereof, the number of residence tanks may be one. In addition, although air is sent from below, if sufficient stirring performance can be realized, air may be sent from above. Further, a plurality of aeration tanks may be used depending on the degree of the sewage.

When the exterior and the housing of each tank are made of highly durable wood, the use of wood including wood chips increases. The use of thinned wood as a wood is an effective solution to the social problem of thinned wood processing.

The activated carbon used for the decolorizing portion may be any coniferous wood, but cedar or larch is preferred in terms of availability and high purification ability.

In addition, in the use in winter, it is desirable to take measures to keep the heat such as burying a part underground in order to maintain the activity of microorganisms in the aeration tank and the evaporation reaction tank.

If the reuse of water is insufficient due to excessive evaporation of water, it may be supplemented with tap water, rainwater, and river water.

FIG. 2 is an explanatory diagram illustrating a configuration of a sewage purification and regeneration device according to the first embodiment. It is explanatory drawing which showed the structure of the microorganism holding material. FIG. 5 is an explanatory diagram showing a partial configuration of a sewage purification and regeneration device according to a second embodiment. It is explanatory drawing which showed the structure of the network-like microbe holding material. FIG. 10 is an explanatory diagram showing a partial configuration of a sewage purification and regeneration device according to a fourth embodiment. It is an explanatory view showing a partial configuration of a sewage purification / regeneration device of a fifth embodiment. It is an explanatory view showing the configuration of the circulating flush toilet unit of Embodiment 6. FIG. 13 is an explanatory diagram showing a configuration of a sewage purification and regeneration device according to a seventh embodiment. It is an explanatory view showing a configuration of a sewage purification / regeneration device of an eighth embodiment.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Aeration tank 2 Evaporation reaction tank 4 Retention tank 5 Stirring tank 6 Microorganism holding material 8 Partition plate 9 Reaction part 10 Treated water receiving part
13 Second Layer 14 First Layer 15 Core Material Sheet 16 Connecting Thread 17 Restriction Frame 19 Decolorizing Tank 20 Water Receiving Part 21 Decolorizing Part 22 Water Reservoir 23 Toilet bowl 24 Waste Tank 25 Removal Tank 26 Housing 28 Washing Water Tank

Claims (10)

An apparatus for purifying and regenerating sewage using an aeration tank and an evaporation reaction tank, wherein the aeration tank includes a retention tank and a stirring tank, and the microorganism holding material is ubiquitously disposed in the retention tank. Purification and regeneration equipment. に お い て The sewage purification and regeneration apparatus according to claim 1, wherein the microorganism holding material is composed of a core material and a number of sapwood. (3) The sewage purification / regeneration apparatus according to (1) or (2), wherein the evaporation reaction tank has a wood chip layer. An apparatus for purifying and regenerating sewage by treating sewage in an aeration tank and flowing the treated water into an evaporative reaction tank, wherein the evaporative reaction tank is a member different from the first layer in which wood chips are laid. And a second layer laid horizontally in a position longer than the vertical direction at a position where the treated water flows. に お い て The sewage purification and regeneration apparatus according to claim 4, wherein the member of the second layer is a three-dimensional net-like structural material made of synthetic resin. The sewage purification and regeneration apparatus according to claim 4, wherein the member of the second layer is a mesh-like microorganism holding material. 汚 A sewage purification and regeneration apparatus according to any one of claims 4 to 6, wherein a regulating frame is provided at a horizontal boundary position of the second layer. A circulating flush toilet unit having a toilet, a waste tank, a removal tank, an aeration tank, an evaporation reaction tank, and a housing for storing the toilet and each of the tanks, wherein the aeration tank includes a retention tank and a stirring tank, A circulating flush toilet unit, wherein a microorganism holding material is ubiquitous in the retention tank, and a mesh-like microorganism holding material is spread around the treated water inflow position of the evaporation reaction tank. 汚 A sewage purification / regeneration apparatus according to any one of claims 1 to 3, wherein a charcoal for decolorization is disposed in the evaporation reaction tank near a position where treated water flows. 汚 A sewage purification / regeneration apparatus according to any one of claims 1 to 7, further comprising a decolorization tank containing charcoal of coniferous wood.

Images