JPS6331597A - Re-aeration cultrue tank in apparatus for treating waste water containing organic substance - Google Patents

Abstract

PURPOSE:To effectively purify waste water at low cost, in a cylindrical water tank partitioned into a separation tank and a reaction tank, by mounting a continuity part for both tanks to said cylindrical water tank. CONSTITUTION:The packing beds 11 in a reaction tank 3 and a re-reaction tank 6 are packed with a decomposed substance molded into a pellet shape and the reaction filter bed 18 in a second separation tank 5 is packed with pumice containing an activated slicic acid component. After the tanks 5, 6 are filled with water, waste water is sent into both tanks from an inflow piep 8 and, at the same time, air is sent in an air diffusion pipe 10. By this method, a convection is generated between the aeration part and anaerobic part of each tank and a convection accompanied by aeration is generated in the packing beds 11. The aerobic and facultative anaerobic bacteria contained in waste water are domesticated so as t contain a compound having a phenol group. As a result, a bacterial metabolite is reacted with the org. substance in waste water in the reaction tank 3 and made macromolecular to be formed into sludge. Thereafter, waste water is sent to a separation tank to separate sludge.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides a method for treating wastewater containing organic substances, in which a large amount of microbial metabolites containing phenol and/or compounds with phenol-exposed groups and activated silicic acid are removed. Regarding wastewater treatment equipment containing organic substances,
In particular, those having reaeration means.

Prior art The inventor of the present invention previously filed a patent application No. 60-1026f38.
No. 80-102,889, etc., proposed a method for treating wastewater containing organic substances as an alternative to conventional biological treatment methods. This treatment method involves contacting and mixing organic matter in wastewater with a microbial metabolite containing phenol or/and a compound with a phenol-exposed group, or a substance containing a large amount of the metabolite and activated silicic acid. This is a method to purify wastewater by causing a physicochemical reaction to produce macromolecules including bonding, granulation, aggregation, and condensation monopolymerization, as well as enlarging fine sludge, and then separating this into solid-liquid. .

However, since this treatment method is a completely new method, no specific apparatus suitable for this treatment method has conventionally existed.

Problems to be Solved by the Invention As mentioned above, a treatment device that can easily carry out the method for treating wastewater containing organic substances has not yet been known, and the proposal thereof has been strongly desired.

Moreover, in this treatment method, in addition to the purification of wastewater through solid-liquid separation, the antibacterial action of the aforementioned metabolites has been shown to have an inhibitory effect on Escherichia coli, Boudreault bacterium, and the like.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an effective and low-cost implementation of the above-mentioned treatment method for purifying wastewater.

Means for Solving the Problems According to the present invention, a cylindrical water tank is partitioned into a reaction tank, a first separation tank, a second separation tank, and a re-reaction tank in the order of a partition wall extending circumferentially from the center. An inlet to the upper part of the reaction tank, an aeration pipe and a packed bed, a conduction part from the reaction tank to the first separation tank, a sludge transport device from the first separation tank to the re-reaction tank, and from the top of the first separation tank. A conduction part to the lower part of the second separation tank, a reaction filtration layer provided above the conduction part in the upper part of the second separation tank, a sludge transport device from the upper part of the first separation tank to the re-reaction tank, 82 A configuration comprising a discharge port provided at the upper part of the separation tank and above the reaction filtration layer, and a conduction part from the intermediate layer of the re-reaction tank to the reaction tank, which has an aeration pipe and a packed bed. suggest.

Function The function of the device of the present invention having the above configuration will become clear in the examples described below.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

In the processing apparatus of the present invention, a cylindrical outer wall 2 is connected to a reaction tank 3 by a partition wall 1.
, an inflow pipe 8 to the upper part of the reaction tank 3 is connected to the cylindrical water tank 7 partitioned into the first separation tank, the second separation tank 5, and the re-reaction tank 6;
A water flow adjustment plate 9, an aeration pipe 10, and a packed bed 111 inside the reaction tank 3, a conduction section 12 from the reaction tank 3 to the first separation tank 4, and a first
sludge conveyance device 13 from the minute 11iI tank 4 to the re-reactor tank 6;
Conduction part 12 from above the first separation tank 4 to below the second separation tank 5
, a reaction filtration layer 18 located above the first separation tank and stretched above the conduction part 12, a sludge conveying device 13 from the second separation tank 5 to the re-reaction tank 6, and an upper part of the second separation tank 5. In addition, a discharge pipe 14 is provided from above the reaction filtration layer 18, and the re-reaction tank 6 is provided with a conductive portion 12 that opens from the intermediate layer to the reaction tank 3.

On the other hand, the cylindrical water tank 1 is connected above the reaction tank 3 to an inflow pipe 8 which is connected to a wastewater supply source (not shown), and is connected to an outflow pipe 14 above the first separation tank. 3 and the re-reaction tank 6 have the same configuration except for their tank volumes, and the water flow adjustment plate 9 divides each volume into approximately two concentrically solid reaction tank filling aeration parts 3d and the reaction tank. The water flow regulating plate 9 forms a partition wall at the center three-fifths of the height from the bottom 7a of the cylindrical water tank 7 to the open water surface 15 (Fig. 3). (see). At the center of the water flow adjustment plate 9 and the cylindrical outer wall 2, and at the center of the bottom 7a of the cylindrical water tank 7 and the lower part of the water flow adjustment plate 9, #! ! A tracheal lO is installed. Further, the space between the water flow regulating plate 9 and the cylindrical outer wall 2 forms a packed layer 11. The lower and upper portions of the filling layer 11 are formed from a perforated plate 16 made of punched metal, etc., and the optimal size of the perforations is a circular one with a diameter of 2 mm to 8 mm, but other sizes may be used. Furthermore, the shape is not necessarily limited to the above-mentioned circular shape, as it may be an elliptical shape, an oval shape, or other shapes.

Further, this water flow regulating plate 9 is not necessarily necessary due to the tank volume size, aeration strength, etc.

The reaction tank internal partition plate 17 shown in FIG.
It is a partition wall that partitions the cylindrical water tank 7 into approximately equal parts into the cylindrical water tank 7 and the third reaction section 3C, and has a conductive portion 12 on each wall and partitions the cylindrical water tank 7 in the diametrical direction. Since the presence or absence of partition walls affects the performance of the bird processing equipment, it is desirable to have the configuration shown in FIG. 2, but even if there is no partition plate 17 in the reaction tank as shown in good.

The center angle of the reaction tank 3 is about 180°, and the center angle of the first separation tank 4 and each of the first separation tank 4 and the re-reaction tank 6 is about 6
About 0° is most preferable, and the reaction tank 3, the first separation tank 4, and the second separation g14e5 and the reaction tank 3 and the re-reaction tank 6 are connected by conductive portions 12, respectively. or,
Inside the first separation tank 4 and the second separation tank 5, a sludge transport device 13 such as an air lift is installed, and the separated sludge is transported to the re-reaction tank 6, but a water flow adjustment plate 9 is installed. If so, it is returned to the anaerobic section 3e of the reaction tank.

Below the second separation tank 5, a reaction filtration layer 18 is formed above the opening end +2a of the conducting portion and below the discharge pipe 14.

As shown in FIG.
It has a layered structure in which perforated plates 19 and 19 made of punching metal or the like are arranged above and below with an interval of 50 mm to 50 mm, and the state of the perforations in the perforated plates 19 is determined based on the perforations in the filling layer 11. It is preferable to have the same configuration as the hole plate 16.

The operation of the present invention having the above configuration will be explained.

First, before starting the operation, in the packed bed 11 in the reaction tank 3,
A substance containing a microbial metabolite containing phenol and/or a compound with an exposed phenol group, such as a corrosive material formed into a pellet, is filled, and the reaction in the second separation tank 5 1)! The overlayer 18 is filled with an activated silica-rich material, for example, andesitic pumice.

Next, after filling with water, waste water is introduced from the inflow pipe 8, and at the same time, air is sent from an unillustrated blower to the aeration pipe 10. The aeration intensity is medium, and intermittent aeration at intervals of about 15 to 30 minutes is preferable. As a result, the reaction tank filling aeration section 3d
Slow convection occurs between the reaction tank anaerobic part 3e, the re-reaction tank filling aeration part 6d and the re-reaction tank lOk aeration part 6e. At the same time, a water flow accompanied by aeration is generated in the filling tank 11, so that microbial metabolites or corrosion precursors containing phenol and/or compounds with exposed phenol groups are extracted and dissolved from the filling in the reaction tank 3. Due to the action of the dissolved substances, aerobic bacteria and facultative sickle bacteria among the general soil bacterial group contained in the wastewater in the reaction tank 3 have phenol or/and phenol-exposed groups in their metabolites. adapted to contain a compound.

As a result, the phenol or/and
In the reaction tank 3, microbial metabolites containing compounds with exposed phenol groups react with organic matter in the wastewater and turn into macromolecules and sludge.

The wastewater containing the substances converted into macromolecules and sludge flows into the first separation tank 4 through the conduction section 12 and is separated into sludge and intermediate treated water. The first separation tank 4 may be a normal settling tank, and the sludge deposited in the first separation tank 4 is sent to the re-reaction tank 6 by the sludge transport device 13.

The intermediate treated water is further sent to the lower part of the second separation tank 5. This intermediate treated water is separated from the sludge in the first separation tank 4, so that the concentration of the product produced below is reduced. This causes a difference in the equilibrium constant.

Therefore, in the second minute M+Pi5, bacteria that have been adapted to produce phenol or/and compounds with phenol-exposed groups enter and proliferate in the reaction tank 3. and microbial metabolites containing compounds with phenol-exposed groups, and substances containing a large amount of activated silicic acid dissolved in and dissolved in the intermediate treatment water from the reaction filtration layer I8 and the reaction filtration layer 18, together cause corrosion. In order to induce a chemical reaction,
The intermediate treated water is further purified. The other functions of the second separation tank 5 are the same as those described for the first separation tank 4.

Incidentally, surplus sludge not required for return among the sludge in the first separation tank 4 and the second separation tank 5 is discharged out of the apparatus through a drawing pipe (not shown).

Further, when the tank internal partition plate 17 is provided in the reaction tank 3 as shown in the second diagram, the residence time of the wastewater in each tank becomes more uniform, and the wastewater treatment efficiency is further stabilized and improved. I can do it.

In this case, it is particularly easy to transfer suspended and dissolved substances contained in wastewater into a solid-liquid separable state, and the effect is extremely high.
The soil bacterial groups living in the sludge transported from the sludge are controlled to produce metabolites containing compounds with phenol and/or phenol-exposed groups, and the bacterial groups other than the soil bacterial groups living in this sludge are For example, Escherichia coli and adult grape seedlings can be further inhibited by the antibacterial action of the metabolites.

Although the invention uses a cylindrical device, the function or effect is basically the same even if the device is of other shapes, although the efficiency etc. may vary slightly. Therefore, devices of other shapes may be used.

Effects of the Invention As is clear from the above explanation, the treatment apparatus of the present invention can effectively generate microbial metabolites containing phenol and/or compounds with phenol-exposed groups by soil microorganisms, and can also reduce wastewater. It induces a physicochemical reaction between the organic matter and some inorganic matter in the substance and the metabolite or a substance containing a large amount of activated silicic acid, effectively suppressing the formation of macromolecules, sludge, and various bacteria. has the effect that can be achieved.

[Brief explanation of drawings]

FIG. 1 is an explanatory plan view of the main part of one embodiment of the present invention, FIG. 2 is an explanatory plan view of the main part when a partition plate is installed inside the first reaction tank, and FIG. 3 is A of FIG. 1. -A longitudinal sectional view; FIG. 4 is a longitudinal sectional view taken along the line B-B in FIG. 1; lφ・Partition wall, 3... Reaction tank, 4... First separation tank, 5...
2nd separation tank, 6. - Re-reaction tank, 7. Cylindrical water tank, No. 8.
Wave entry pipe, 9. Water flow adjustment plate, 10. Diffusion pipe, 11.Φ
Filled bed, 12... Conduction part, 13... Sludge conveyance device, 14
... Discharge pipe, 16 and 19, Φ perforated plate, 18... Reaction filtration layer l Decoy 3 doors "Ir2 Figure 3 figure Procedural amendment August 30, 1985 1, Incident indication 1988 patent Application No. 172772 2, Title of the invention: Cultivation treatment device for wastewater containing organic substances 4, Spontaneous amendment by the agent 1, Name of the invention, Cultivation treatment device for wastewater containing organic substances 2, Claims ( 1) Consists of a cylindrical water tank partitioned in order into a reaction tank, a first separation tank, a second separation tank, and a re-reaction tank by partition walls installed in a radial direction, and includes an inlet to the upper part of the reaction tank, an aeration pipe, and a packed bed. , a conduction part from the reaction tank to the first separation tank, a sludge transfer device from the first separation tank to the re-reaction tank, a conduction part from the upper part of the first separation tank to the lower part of the second separation tank, A reaction filtration layer located above the second separation tank and above the conduction part, a sludge conveying device from the bottom of the second separation tank to the re-reaction tank, and a reaction filtration layer located at the top of the second separation tank. The cylindrical water tank is equipped with a discharge port provided above the cylindrical water tank, and a conduction part from the middle layer of the re-reactor to the reaction tank, which has an aeration pipe and a packed bed. Culture treatment device. (2) The partitioned center angle of the reaction tank is 90 or more2
25. A wastewater culture treatment device containing an organic substance as set forth in claim (1) below. (3) Cultivation of wastewater containing organic substances according to claim (1), wherein the central angles occupied by the first separation tank, the second separation tank, and the re-reaction tank are respectively 45 or more and 90 or less. Processing equipment. (4) The wastewater containing organic substances as set forth in claim (1), wherein the lower and upper parts of the packed bed provided in the reaction tank and the re-reaction tank are formed of perforated plates. culture processing equipment. (5) The organic compound according to claim (1), wherein the reaction filtration layer provided in the second separation tank is formed by dividing the second separation tank into two upper and lower parts. Cultivation treatment equipment for wastewater containing substances. (6) The wastewater containing organic substances as set forth in claim (1), wherein the lower and upper portions of the reaction filtration layer provided in the second separation tank are formed with perforated plates. culture processing equipment. 36 Detailed Description of the Invention "Industrial Application Field" The present invention provides a method for treating wastewater containing organic substances by treating a large amount of microbial metabolites containing phenol and/or compounds with phenol-exposed groups and activated silicic acid. Regarding wastewater treatment equipment containing organic substances that utilizes substances contained in
In particular, it is one that has culture means by re-reaction. "Prior Art" The inventor of the present invention has previously proposed in Japanese Patent Application Nos. 60-102668 and 1982-102669, etc., a method for treating wastewater containing organic substances as an alternative to conventional biological treatment methods. proposed a method. This treatment method involves contacting and mixing organic matter in wastewater with microbial metabolites containing phenol and/or compounds with exposed phenol groups, or with substances containing large amounts of these metabolites and activated silicic acid. , physicochemically reacts to cause macromolecularization including bonding, granulation, aggregation, condensation, and polymerization, as well as enlarging the fine sludge,
The purpose is to purify wastewater by separating it into solid and liquid. However, since this treatment method is a completely new method, there has been no specific apparatus suitable for this treatment method. ``Problem to be Solved by the Invention J'' As mentioned above, a treatment device that easily performs the method for treating wastewater containing organic substances has not yet been known, and a proposal for such a method has been strongly desired. Regarding the treatment method, in addition to purifying wastewater through solid-liquid separation, the antibacterial effect of the aforementioned metabolites has been shown to have an inhibitory effect on Escherichia coli, Staphylococcus, etc. The object of the invention is to provide an effective and low-cost device that implements the above-mentioned treatment method for purifying wastewater. The invention provides a cylindrical water tank partitioned in the order of a reaction tank, a first separation tank, a second separation tank, and a re-reaction tank by a partition wall extending from the center in the circumferential direction, and an inlet to the upper part of the reaction tank;
An aeration pipe and a filling tank, a conduction part from the reaction tank to the first separation tank, a sludge conveyance device from the first separation tank to the re-reaction tank,
a conduction part from the top of the first separation tank to the bottom of the second separation tank;
A reaction filtration layer located above the second separation tank and above the conduction part, a sludge transport device from the bottom of the second separation tank to the re-reaction tank, and a reaction filtration layer located at the top of the second separation tank. We propose a configuration comprising a discharge port provided above the layer, and a conduction part from the intermediate layer of the re-reactor tank having an aeration pipe and a packed bed to the reaction tank. "Function" The function of the device of the present invention having the above configuration will become clear in the examples described below. "Example" An example of the present invention will be described below based on FIGS. 1 to 4. In the processing apparatus of the present invention, a cylindrical outer wall 2 is connected to a reaction tank 3 by a partition wall 1.
, a cylindrical water tank 7 partitioned into a first separation tank 4, a second separation tank 5, and a re-reaction tank 6, an inflow pipe 8 to the upper part of the reaction tank 3,
The water flow adjustment plate 9, the aeration pipe 10 and the packed bed 11 inside the reaction tank 3, the conduction part 12 from the reaction tank 3 to the first separation tank 4, the first
A sludge transport device 13 from the separation tank 4 to the re-reaction tank 6, a conduction section 12 and a second connection from the upper part of the first separation tank 4 to the lower part of the second separation tank 5.
A reaction filtration layer 18 provided above the separation tank 5 and above the conduction section 12, and a re-reaction tank 6 from the second separation tank 5.
and a discharge pipe 14 from above the reaction filtration layer 18, and an opening in the re-reaction tank 6 from the intermediate layer to the reaction tank 3. A conductive portion 12 is provided. On the other hand, the cylindrical water tank 1 is connected above the reaction tank 3 to an inflow pipe 8 that is connected to a wastewater supply source (not shown), and connected above the second separation tank 5 to an outlet pipe 14. The reaction tank 3 and the re-reaction tank 6 have the same configuration except for the tank volumes, and react with the reaction tank filling aeration section 3d whose respective volumes are divided approximately into two concentrically by the water flow adjustment plate 9. The water flow regulating plate 9 forms a partition (a third (see figure). A 1° diffuser pipe is installed concentrically at the center of the water flow adjustment plate 9 and the cylindrical outer wall 2, and at the center of the bottom 7a of the cylindrical water tank 7 and the lower part of the water flow adjustment plate 9. The space between the adjusting plate 9 and the cylindrical outer wall 2 forms a filling layer 11 . The lower and upper portions of the filling layer 11 are formed from perforated plates 16 made of punched metal, etc., and the optimal size of the perforations is a circular one with a diameter of 2 to 873 mm, but other sizes are also possible. Furthermore, the shape is not necessarily limited to the above-mentioned circular shape, as it may be an elliptical shape, an oval shape, or other shapes. Furthermore, this water flow regulating plate 9 is not necessarily necessary in relation to the tank volume size and aeration strength, etc. The reaction tank internal partition plate 17 shown in FIG. First reaction section 3a from the opposite side. It is a partition wall that divides the cylindrical water tank 7 into a second reaction section 3b and a third reaction section 3c approximately equally, and has a conductive section 12 on the can wall and partitions the cylindrical water tank 7 in the diametrical direction. The presence or absence of partition walls affects the performance of the processing equipment, so
Although a configuration as shown in FIG. 2 is desirable, it is also possible to have a configuration in which the reaction tank internal partition plate 17 is not present as shown in FIG. The central angle of the reaction tank 3 is about 180°, and the central angles of the first separation tank 4, second separation tank 5, and re-reaction tank 6 are as follows:
The most preferable number is about 60, and the reaction tank 3, the first separation tank 4, and the second separation tank 5 are connected to each other, and the reaction tank 3 and the re-reaction tank 6 are connected by conductive parts 12, respectively. Also, the first
Inside the separation tank 4 and the second separation tank 5, a sludge transport device 13 such as an air lift is installed, and the separated sludge is transported to the re-reaction tank 6. Above the second separation tank 5, a reaction filtration layer 18 is formed above the opening end 12a of the conducting portion and below the discharge pipe 14. As shown in FIG.
It consists of a main part structure in which perforated plates 19 and 19 made of punching metal or the like are arranged above and below with an interval of 50 m to 50 m, and the state of the perforated holes in the perforated plates 19 is determined according to the filling layer 11. It is preferable to have the same configuration as the perforated plate 16. The operation of the present invention having the above configuration will be explained. First, prior to the start of operation, a substance containing a microbial metabolite containing phenol or/and a compound with a phenol-exposed group is added to the packed bed 11 in the reaction tank 3 and the re-reaction tank 6.
For example, humus molded into pellets is filled, and the reaction filtration layer 18 in the second separation tank 5 is filled with a substance containing a large amount of activated silicic acid, for example, andesitic pumice. Next, after filling with water, waste water is introduced through the inflow pipe 8, and at the same time, air is introduced into the diffuser pipe 10 from a blower (not shown). The aeration intensity is moderate, and intermittent aeration is preferably performed at intervals of about 15 to 30 minutes. As a result, the reaction tank filling aeration section 3d
Slow convection occurs between the reaction tank anaerobic part 3e, the re-reaction tank filling aeration part 6d and the re-reaction tank anaerobic part 6e. At the same time, a water flow accompanied by aeration is generated in the packed bed 11, so that microbial metabolites containing phenol and/or compounds with phenol-exposed groups or humic precursors are removed from the filling in the reaction tank 3 and the re-reaction tank 6. extraction,
dissolve. Due to the action of the dissolved substances, aerobic bacteria and facultative anaerobic bacteria of the general soil bacterial group contained in the wastewater in the reaction tank 3 and the re-reactor tank 6 contain phenol or/and Adapted to include compounds with exposed phenol groups. As a result, the phenol or/and
In the reaction tank 3, microbial metabolites containing compounds with exposed phenol groups react with organic matter in the wastewater, turning into macromolecules and turning into sludge. Flows into the first separation tank 4 through the conduction section 12 and is separated into sludge and intermediate treated water. The first separation tank 4 may be a normal settling tank, and the sludge deposited in the first separation tank 4 is sent to the re-reaction tank 6 by the sludge transport device 13. The intermediate treated water is further sent to the lower part of the second separation tank 5. In the second separation tank 5, phenol and/or compounds with phenol-exposed groups are removed by the action of the adapted bacterial group contained in the intermediate treatment water. Since the amount of metabolites containing phenol and/or microbial metabolites containing phenol and/or compounds with phenol-exposed groups remaining in the intermediately treated water is further increased, the amount of organic matter remaining in the intermediately treated water, as well as microbial metabolites containing phenol and/or compounds with phenol-exposed groups, is removed from the intermediately treated water within and from the reactive filtration layer 18. The substances containing a large amount of activated silicic acid dissolved in the water together cause a humicification reaction, so that the intermediately treated water is further purified. The other functions of the second separation tank 5 are as follows.
The same applies to the separation tank 4. Incidentally, surplus sludge not required for return among the sludge in the first separation tank 4 and the second separation tank 5 is discharged out of the apparatus through a drawing pipe (not shown). In the re-reaction tank 6, the first separation tank 4 and the second separation tank 5
The bacterial group consisting of soil aerobic bacteria and hyperanaerobic bacteria contained in the sludge sent from
At the same time, by further acclimatizing the sludge to remove metabolites containing compounds with exposed phenol groups, and at the same time, more completely suppressing bacteria such as Escherichia coli and Staphylococcus remaining in the returned sludge, the reaction tank The reaction efficiency in step 3 and, by extension, the treatment efficiency will be increased. In addition, when the tank internal partition plate 17 is provided in the reaction tank 3 as shown in the second diagram, the residence time of the wastewater in each tank becomes more uniform, and the wastewater treatment efficiency is further stabilized and improved. I can do it. Although Todoroki's invention uses a cylindrical device, the function or effect is basically the same even if the device is of other shapes, although the efficiency may vary slightly. Therefore, devices of other shapes may be used as well. "Effects of the Invention" As is clear from the above explanation, the treatment apparatus of the present invention effectively suppresses the production of microbial metabolites containing phenol and/or compounds with exposed phenol groups by soil bacteria, etc. At the same time, it induces physicochemical reactions between organic matter and some inorganic matter in the wastewater and the metabolite or the metabolite and a substance containing a large amount of activated silicic acid to form macromolecules. It has the effect of effectively achieving sludge formation and control of various bacteria. 4. Brief description of the drawings Figure 1 is a plan view of the main part of an embodiment of the present invention, Figure 2 is a plan view of the main part when a partition plate is installed inside the first reaction tank, and Figure 3 is a plan view of the main part when a partition plate is installed inside the first reaction tank. The figure is a longitudinal cross-sectional view taken along the line A--A in FIG. 1, and FIG. 4 is a vertical cross-sectional view taken along the line B--B in FIG. 1... Bulkhead 3...
Reaction tank 4... First separation tank 5...
Second separation tank 6... Re-reaction tank 7...
・ Cylindrical water tank 8... Inflow pipe 9...
... Water flow adjustment plate 10... Air diffuser pipe 11.
... Filled layer 12 ... Conductive part 13
......Sludge conveyance device 14...Discharge pipe
16, 19... Perforated plate 18... Reaction filtration layer.

Claims (6)

[Claims] (1) Consisting of a cylindrical water tank partitioned in order into a reaction tank, a first separation tank, a second separation tank, and a re-reaction tank by partition walls installed in a radial direction, and an inlet to the upper part of the reaction tank, an aeration pipe, and a filling pipe. a layer, a conduction part from the reaction tank to the first separation tank, a sludge transport device from the first separation tank to the re-reaction tank, and the first
a conduction part from the upper part of the separation tank to the lower part of the second separation tank;
A reaction filtration layer located in the upper part of the separation tank and above the conduction part, a sludge transport device from the lower part of the second separation tank to the re-reaction tank, and an upper part of the second separation tank and above the reaction filtration layer. In a wastewater treatment device containing organic substances, the cylindrical water tank is equipped with a discharge port provided above, and a conduction part from the intermediate layer of the re-reaction tank having an aeration pipe and a packed bed to the reaction tank. Re-aerated culture tank (2) The central angle of the partition of the reaction tank is 90° or more2
A reaeration culture tank in a wastewater treatment apparatus according to claim 1, wherein the temperature is 70° or less. (3) Re-aeration culture in the wastewater treatment apparatus according to claim 1, wherein the central angles occupied by the first separation tank, the second separation tank, and the re-reaction tank are each 45° or more and 90° or less. tank (4) The apparatus for treating wastewater containing organic matter according to claim 1, wherein the lower and upper parts of the packed bed provided in the reaction tank and the re-reaction tank are formed of perforated plates. Re-aerated culture tank (5) The reaction filtration layer provided in the second separation tank contains an organic substance according to claim 1, wherein the reaction filtration layer is formed by dividing the second separation tank into two upper and lower parts. Reaeration culture tank in wastewater treatment equipment (6) In the apparatus for treating wastewater containing organic matter as set forth in claim 1, wherein the lower and upper parts of the reaction filtration layer provided in the second separation tank are formed of perforated plates. Re-aerated culture tank