JP3340356B2 - Bioreactor and wastewater treatment equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bioreactor and a wastewater treatment facility for efficiently removing a specific component in a liquid to be treated, for example, nitrogen components such as ammonia contained in wastewater by microorganisms. .

[0002]

2. Description of the Related Art In general, nitrogen compounds such as ammonia contained in industrial wastewater and domestic wastewater discharged into lakes and marshes, closed sea areas, rivers, etc. are one of the main causes of eutrophication. One. For this reason, wastewater standards for nitrogen have been strengthened, and the discharge of industrial wastewater into rivers and seas is now being strictly regulated.

[0003] Therefore, biological denitrification is widely and generally used as a treatment method for achieving wastewater standards. However, a wastewater treatment apparatus using a biological denitrification method requires an aerobic nitrification tank for performing a nitrification reaction and an anaerobic denitrification tank for performing a denitrification reaction, so that the apparatus becomes large and complicated. There is. Further, it is necessary to add an organic substance such as alcohol to the denitrification tank as an energy source of the denitrification reaction, but it is necessary to install a re-aeration tank for removing the alcohol remaining in the treated water or returning to aerobic. . Furthermore, since pH adjustment is required, there is a problem that the utilization efficiency of the added alcohol is low and the operating cost is high.

[0004] In order to solve such problems, a microorganism (formed of a synthetic polymer, a natural polymer or the like) which is formed into a tube and is effective for removing a target component (for example, a nitrogen component, etc.) from a liquid to be treated. A large number of immobilized carriers on which a nitrifying bacterium, a denitrifying bacterium, etc.) are immobilized are supported by a support frame, and a configuration similar to a boiler in which an energy source material for a denitrification reaction is supplied to a passage in the tube. None, an energy source material for a denitrification reaction was used in place of the heating medium of the boiler, and a bioreactor was used in which the liquid to be treated was in contact with the outside of the tube. A device that removes nitrogen from the liquid to be treated by circulating a denitrification reaction energy source such as ethanol or hydrogen gas through a tube through a circulation pump is provided. It is.

[0005] Further, instead of the tubular bioreactor, a large number of plate-shaped immobilization carriers are arranged in parallel at appropriate intervals, and a liquid to be treated and an energy source material are alternately passed between the plate-shaped immobilization carriers. Such a bioreactor has also been proposed.

[0006]

The above-described bioreactor is disposed so as to be located in the liquid to be treated, and is disposed on the outer peripheral surface of the tubular immobilized carrier and one side of the flat immobilized carrier in the treatment tank. Since the liquids are brought into contact with each other, there is a problem that it is not easy to cope with changes in the size of the entire processing equipment, the amount of the processing liquid for removing specific components, the processing time, etc. with respect to the processing amount.

Further, since the pressure balance between the liquid to be treated and the energy source substance with respect to the immobilization carrier is not adjusted, there is a problem that a large pressure (load) acts on one side and the immobilization carrier is damaged. .

Further, there is a problem that it is difficult to recover surplus oxygen in the oxygen supplied to the liquid to be treated and unused energy source materials for the denitrification reaction.

The present invention is compact, can easily cope with changes in the amount of specific components to be removed, the processing time, etc., and can adjust the pressure balance between the liquid to be treated and the energy source substance with respect to the immobilized carrier. It is still another object of the present invention to provide a bioreactor and a wastewater treatment facility capable of easily recovering surplus gas and unused energy source substances from the gas supplied to the liquid to be treated.

[0010]

According to a first aspect of the present invention, there is provided a bioreactor, comprising: a bioreactor formed into a membrane or a thin plate having a predetermined shape; A module in which an immobilization carrier including a module is mounted so as to surround the periphery of the liquid to be treated by a frame having a supply hole and a discharge hole for the liquid to be treated and a supply and discharge hole for the energy source substance. The liquid to be processed and the energy source material supplied from the lid member are overlapped with a supply hole, a discharge hole, and a lid member having a supply hole and a discharge hole for the energy source material, and the one surface side of the immobilization carrier. the liquid to be treated allowed configured so that the energy source material on the other side is in contact with the front
Cover member and module and module
In the recess for storing the liquid to be treated
Of the liquid to be treated is located at one of the upper and lower
And the other side has a hole for discharging the liquid to be treated.
Together with the modules or the lid member and the module and
Energy source material storage formed by modules
Energy on either the top or bottom of the retaining recess
The source material supply hole is located, and the other
It is configured so that the hole is located .

Further, the wastewater treatment equipment according to the present invention includes a storage tank for storing the liquid to be treated, a pipe for feeding the liquid to be transported to the bioreactor according to claim 1 and Energy source material storage tank for storing or storing and gas-liquid separation of energy source material, energy source material circulation pipe for supplying energy source material to the bioreactor and returning to the energy source material storage tank, fixing the bioreactor The pressure of the liquid to be treated and the energy source substance acting on the activated carrier is controlled to a predetermined value.

[0012]

FIG. 1 is a schematic system diagram showing the overall configuration of a wastewater treatment facility using the bioreactor of the present invention. The wastewater treatment facility stores liquids to be treated such as factory wastewater and domestic wastewater. Storage tank 1 and bioreactor 2
A liquid supply pipe 3 for supply to a fuel cell, an energy source material storage tank 4 for storing an energy source material for a denitrification reaction or for storing an energy source material for a denitrification reaction and gas-liquid separation, A pipe 5 for circulating energy source material is supplied to the reactor 2 and returned to the energy source material storage tank 4.

The storage tank 1 has a flow control valve 7 and a liquid inlet pipe 6 connected to a pipe (not shown) for transporting a liquid to be treated in a factory, and a liquid level gauge 8 for detecting the amount of liquid in the tank. Is provided. The flow control valve 7 is adapted to adjust the opening amount of the pipeline by the detection signal of the liquid level gauge 8.

As shown in FIG. 2, the bioreactor 2 has a supply-side lid member 9 having a supply hole 9a for supplying a liquid to be treated and a supply hole 9b for supplying an energy source substance, and a bacterium which assimilates a specific component by a biological reaction. Modules 10-1 to 10-n formed by an immobilized carrier 11 having a body fixed thereto and a frame 12, a hole 13a for discharging a liquid to be treated, and a hole 13 for supplying an energy source material.
b, a seal mounted between the supply-side lid member 9 and the module 10-1, between the modules 10-1 to 10-n, and between the module 10-n and the discharge-side lid member 13. Packings 14, 15, 16 and the supply-side lid member 9,
Each of the modules 10-1 to 10-n includes a bolt 17 and a nut 18 for integrally fastening the discharge-side lid member 13.

As shown in FIG. 3, the supply-side lid member 9 is formed of a rectangular plate, and a hole 9a for supplying a liquid to be treated and a hole 9b for supplying an energy source material are drilled at predetermined intervals in the lower part. Have been. As shown in FIG. 4, a groove 9c for holding a packing 14 for sealing the joint surface with the module 10 is formed on the back side surface of the supply side lid member 9.
And a packing 1 for sealing a joint surface between the processing liquid supply hole 9a and the processing liquid supply hole of the module 10.
A groove 9d for holding the packing 5, a groove 9e for holding the packing 15 for sealing the joint surface of the module 10 with the liquid discharge hole of the module 10, and a recess 9f for storing the energy source material. The energy source material supply hole 9b and the recess 9f are communicated. A notch 9g for penetrating the bolt 17 is provided at the upper and lower ends of the supply-side lid member 9.
Are formed at four places. A round hole or the like may be used instead of the notch 9g.

As shown in FIG. 5, the module 10-1 has a film-shaped or thin plate-shaped immobilization carrier 11 through which a rectangular gas can pass, and a processing liquid supply hole 12a, a processing liquid discharge hole 12b, and energy. It is sandwiched between two thin frame members 12-1 and 12-2 having a source material supply hole 12c and an energy source material discharge hole 12d so as to surround the periphery.

As the above-mentioned immobilization carrier 11, a polymer gel used for immobilizing microorganisms and enzymes can be used. Specifically, collagen, fibrin, albumin, casein, cellulose fiber, cellulose triacetal, agar, calcium alginate, carrageenan, natural polymers such as agarose, polyacrylamide,
Poly-2-hydroxyethyl methacrylic acid, polyvinyl chloride, γ-methyl polyglutamic acid, polystyrene, polyvinyl pyrrolidone, polydimethyl acrylamide, polyurethane, photocurable resin (polyvinyl alcohol derivative, polyethylene glycol derivative, polypropylene glycol derivative, polybutadiene derivative, etc.) Synthetic polymers and composites of these are mentioned.

The shape of the immobilized carrier in the bioreactor can be a plate, a film, or the like, which can be rectangular, square, circular, flat, curved, hemispherical, or the like. A nitriding bacterium and a denitrifying bacterium effective for removing a target component are immobilized on a carrier.

The nitrifying bacteria described above are nitrites that oxidize ammonia ions to produce nitrite ions (ammonium oxidizing bacteria) and nitrite bacteria that oxidize nitrite ions to produce nitrate ions (nitrite oxidizing bacteria) Consists of The nitrite and the nitrite may be simultaneously supported on the immobilization carrier, or the nitrite alone may be used. This is because denitrifying bacteria can produce nitrogen from nitrate ions, but can also produce nitrogen from nitrite ions.

As the nitrites, denitrifiers and nitrites, those known in the art can be used. More specifically, for example, nitrites include Nitrosomonas europaea IFO-14298, Nitrosomonas europaea, N. marina, Nitrosococcus oceanus, N. mobilis, Nitrosococcus sp.DA-001 (FERM P-12904), Nitrosospira briensis, Nitrosolobus multiformis, Nitrosovibrio tenuis, denitrifying bacteria, Paracoccus denitrificans JCM-6892 *, Paracoccus genrica eutrophus *, A.faecalis, Alcaligenes sp.Ab-A-1, Ab-A-2, GA-2-1 (FERMP-1386
2, P-13860, P-13861), Pseudomonas denitrificans, Thiosphaera pantotropha, Thiobacillus denitrificans **, and nitrite-oxidizing bacteria include Nitrobactrer winogradskyi N. hamburgensis, Nitrospina gracilis Nitrococcus mobilis, and Nitrospira marina. The underlined strain is a strain applicable only to the treatment of seawater, and the other is a strain applicable to the treatment of freshwater. N.
europaea, N and winogradskyi are available in freshwater and seawater. The strain with the FERM number has been deposited by the Applicant with the Research Institute for Microbial Technology and indicates the deposit number. Also,*
Bacteria marked with are bacteria that can use hydrogen as an energy source instead of organic substances such as ethanol, and bacteria marked with ** can use only sulfur as an energy source and use sulfur compounds such as thiosulfuric acid. It is a strain that can be denitrified.

On the other hand, even if these microbial cells are not previously supported on a carrier, the microorganism mixture present in the wastewater treatment system can be supported on the picture and used. For example,
By acclimating the carrier in the wastewater treatment system for a certain period,
There is known a method of naturally supporting a microorganism on a carrier.

In addition to the above-mentioned nitrogen-removing bacteria, other bacteria capable of removing or increasing specific components in the liquid to be treated include microorganisms such as Achromobacter and alkaligenes in activated sludge and wastewater in wastewater. A microorganism for removing phosphorus, an iron bacterium, or the like can be used as it is or a microorganism that promotes the propagation of these microorganisms.

The thickness of the immobilization carrier 11 is not particularly limited, and can be arbitrarily selected according to the properties of the liquid to be treated and the required strength within a range in which the denitrification reaction is efficiently performed. Usually about 0.1 to 10 mm, especially 0.5 to
A thickness of about 1 mm is preferred.

The amount of bacteria immobilized on the carrier and the ratio between nitrifying bacteria and denitrifying bacteria are arbitrarily set depending on the liquid to be treated such as wastewater to be treated.

Since the above-mentioned film-like or thin-plate-like immobilization carrier itself has insufficient strength, it is immobilized thereon by using a support such as a synthetic fiber fabric, a synthetic resin, a metal net or the like. Preferably, an immobilized carrier is formed.

In the case of a metal material such as stainless steel or iron, the frames 12-1 and 12-2 are welded or bonded with a brazing material or a synthetic resin adhesive. In the case of a synthetic resin material such as a polyvinyl chloride resin, a polycarbonate resin, a polyacrylonitrile resin, a fluororesin, etc., it is welded or bonded with a synthetic resin adhesive such as an epoxy resin adhesive.

The frame 12-1 on one side of the frame 12 has a groove for holding the packing 14 formed on the supply side lid member 9 as shown in FIGS. 5, 7, 8, and 9. and corresponding grooves 12-1e and 9c, the grooves 12-1f and corresponding groove 9d for holding the gasket 15 of the processing liquid supply hole 9a portion formed in the supply-side lid member 9, the liquid to be treated discharge hole A groove 12-1g (a groove corresponding to the groove 9e formed in the supply-side lid member 9) for holding the packing 15 for sealing the portion 12b, and an energy source material storage groove formed in the supply-side lid member 9 are provided. The recess 9f and the corresponding recesses 12-1h and 12-1j are formed so as to be positioned above and below the rectangular transmission hole 12-1k , respectively , and the energy source material supply hole 12c and the recess 12-1h are formed.
However, the hole 12d for discharging the energy source material and the recess 12-1j communicate with each other.

The frame 12-2 on the other side has a groove 12 having the same shape as the groove 9c for holding the packing 14 formed on the supply-side lid member 9 as shown in FIGS. 6, 7, 8, and 9. -2e
And the energy source material supply hole 12c and the module 1
The groove 12-2f for holding the packing 16 for sealing the joint surface with the energy source material supply hole 0-2, and the joint surface between the liquid discharge hole 12c and the module 10-2 are sealed. A groove 12-2g for holding a packing 16 for
The processing liquid storage recesses 12-2h and 12-2j are formed so as to be positioned above and below the rectangular transmission hole 12-2k, respectively. The processing liquid discharge hole 12b communicates with the recess 12-2j.

As shown in FIGS. 10 and 11, the module 10-2 has a hole 12a for supplying a liquid to be treated and a hole 12b for discharging a liquid to be treated, a hole 12c for supplying an energy source material, and a hole 12c for supplying an energy source material. The relationship between the recesses 12-1h and 12-1j for storing the energy source substance and the recesses 12-2h and 12-2j for storing the liquid to be treated with respect to the hole 12d is in a state opposite to that of the module 10-1. Module 1
0-2 is used with the same shape as the module 10-1 turned upside down.

Notches 12 are formed at the upper and lower ends of the frame 12 so that bolts 17 can pass through the same positions as the supply-side lid member 9.
k is formed at four places.

In the above-described module 10, the frame 12 is not formed by the two thin plates 12-1 and 12-2, but is formed by a single plate, and is formed on the concave side for storing the liquid to be treated or for storing the energy source substance. A configuration in which the immobilization carrier 11 is fixed to any of the concave sides by welding, welding, or bonding, and the frame body 12 is formed of a single plate to form a concave portion for storing a liquid to be treated or for storing an energy source substance. A configuration in which the immobilization carrier 11 is arranged on one of the concave portions and is integrally fixed by welding, welding, or bonding using a frame member that sandwiches only the peripheral surface of the immobilization carrier 11. Can be In addition, instead of welding, welding, and bonding, it can be fixed using a screw member such as a bolt or a nut. In this case, it is preferable to provide a sealing gasket between the frame 12 and the immobilization carrier 11. preferable.

As shown in FIG. 13, the discharge-side lid member 13 is formed of a rectangular plate, and a hole 13a for discharging the liquid to be treated and a hole 13b for discharging the energy source material are formed in the upper portion thereof at predetermined intervals in the horizontal direction. Have been. As shown in FIG. 12, a groove 13c for holding a packing 14 for sealing a joint surface with a module 10-n, a hole 13a for discharging a liquid to be treated, and a module 10
A groove 13d for holding a packing 15 for sealing the joint surface of the module 10-n with the liquid supply hole, and a packing 16 for sealing the joint surface of the module 10-n with the energy source material discharging hole. Groove 13e and concave portion 1 for storing the liquid to be treated
3f is formed, and the hole 13a for discharging the liquid to be treated is communicated with the concave portion 13f. In addition, four notches 13g for penetrating the bolt 17 are formed at the upper and lower ends of the discharge-side lid member 13 at the same positions as the supply-side lid member 9. It is the same as the case of the supply-side lid member 9 that a round hole or the like can be formed instead of the notch 13f.

As shown in FIG. 14, the above-mentioned bioreactor 2 comprises a liquid to be treated and an energy source
1 and are processed so as to be in a co-current state. As shown in FIG. 15, the liquid to be treated and the energy source material for the denitrification reaction are bounded by the immobilization carrier 11 as shown in FIG. It may be conveyed and processed so as to be in an AC state or a cross flow state (not shown).

The liquid supply pipe 3 has a gate valve 20 and connects a liquid storage tank 1 and a liquid supply pump 21 to a liquid supply pipe 19, and a T-type pipe 23 connected to a stationary mixer 22. Pump 2
1, a liquid feed pipe 25 connecting the stationary mixer 22 and the processing liquid supply hole 9 a of the supply side lid member 9 in the bioreactor 2, and a pressure control valve 27. A liquid return pipe 26 connecting the position near the outlet of the liquid feed pump 21 of the liquid feed pipe 24 to the storage tank 1, and an oxygen gas connected to the T-shaped pipe 23 having a pressure control valve 29. It is constituted by a supply pipe 28 and an oxygen gas cylinder 30 connected to the oxygen gas supply pipe 28.

Instead of the oxygen gas cylinder 49 described above, an air supply pipe having a filter, a blower and the like is connected to the T-type valve 23 to supply air into the liquid to be treated.
6. Connecting an air supply pipe 53 having a filter and a blower as shown in FIG. 6 to the supply-side lid member 9 of the bioreactor 2, and supplying air to the liquid pool to be treated in the bioreactor 2 in the form of bubbles. Can be.

The air supply pipe 53 is integrally provided with a mounting flange 54, which is mounted on the supply side lid member 9 with a bolt 55 and is sealed with a packing 56. Further, a hole for air blowing 5 is provided at a portion of the air supply pipe 53 which is located at the liquid pool to be treated.
3a are formed, and the diameter and the number of the air blowing holes 53a are set so that the amount of air blown out at each of the liquid pools to be processed becomes uniform.

When the above-mentioned air supply pipe 53 is provided,
The supply-side lid member 9 is provided with a through-hole 9n and the module 10 is provided with a through-hole 12n so that the air supply pipe 53 can pass therethrough. Seal between the modules 10.

The above-mentioned air supply pipe 53 may be divided into two air supply pipes and inserted from both the supply side and the discharge side of the bioreactor 2 to supply air. it can.

The energy source material storage tank 4 has a pressure control valve 32 and is connected to a gas separator (not shown) for separating a specific gas (nitrogen, hydrogen, etc.) from the gas separated in the tank. Supply pipe 33, which has a gate valve 34, a gate valve 34, and is connected to a supply source of a specific liquid (such as an alcohol solution such as water or ethanol), a pressure gauge 35 for detecting the pressure in the tank, and a specific gas. Is provided with a densitometer 34 for detecting the density of. The opening of the pressure control valve 32 is adjusted based on the pressure detection signal detected by the pressure gauge 35 and the gas concentration detection signal detected by the concentration meter 36. When the pressure reaches a preset value or the gas concentration reaches a preset value, the pipeline of the pressure regulating valve 34 is opened to allow the gas in the energy source material storage tank 4 to be passed to a separator (not shown). Send out.

The energy source material circulation pipe 5 is a gate valve 3
And an energy source material feed pipe 37 connecting the energy source material storage tank 4 and the circulation pump 39, and an energy source connecting the T type pipe 41 connected to the stationary mixer 40 and the circulation pump 39. Source material feed pipe 42, supply-side lid member 9 in stationary mixer 40 and bioreactor 2
An energy source material supply pipe 43 connecting the energy source material supply hole 9b and an energy source material return connecting the energy source material discharge hole 13b of the discharge side lid member 13 and the energy source material storage tank 4 in the bioreactor 2. A source pipe 44, an energy source material return pipe 45 having a pressure control valve 46 and connecting the energy source substance feed pipe 42 and the energy source substance storage tank 4, and a pressure control valve 48;
Energy source material supply tube 47 connected to the mold tube 41
And a hydrogen gas cylinder 49 connected to the energy source material supply pipe 47. Energy sources for the denitrification reaction include gases such as hydrogen gas, dissolved water such as hydrogen gas, dissolved water such as microbubble hydrogen gas, alcohol solutions such as ethanol and methanol, organic substances such as glucose, and wastewater containing organic substances. A liquid or the like can be used. In the case of a gas such as hydrogen gas, a cylinder filled with such a gas is used, but it goes without saying that the gas can be supplied from the gas producing apparatus. Further, in the case of water, a liquid supply pipe 33 is connected to a tap water supply pipe, and in the case of an alcohol solution such as ethanol and methanol, a small container in which the alcohol liquid is stored,
The liquid supply pipe 33 is connected to a tank or the like and supplied to the energy source substance storage tank 4.

The above-mentioned supply member 9 has a hole 9a for supplying a liquid to be treated, a hole 9b for supplying an energy source substance, and a lid member 1 for discharging.
Although the supply pipe and the discharge pipe can be directly connected to the processing liquid discharge hole 13a and the energy source substance discharge hole 13b by screwing or welding, a short pipe with a flange is screwed. Each supply tube and discharge tube can be connected by welding.

In the above-mentioned bioreactor 2, the UF membrane for removing the suspended liquid (eg, SS) and the like existing in the treated liquid is provided in the treated liquid discharge hole 13a of the discharge side cover member 13 in the bioreactor 2. A treated liquid discharge pipe 50 for supplying to a membrane separation device (not shown) formed of a hollow fiber membrane or the like is connected. If the treated liquid does not contain any suspended substances or the like, it goes without saying that the treated liquid from the bioreactor 2 can be discharged to lakes, rivers, and the like without installing a membrane separation device.

A pressure gauge 52 is provided on the treated liquid discharge pipe 50.
However, a pressure gauge 51 is provided in the energy source substance return pipe 44, and the pressure control valves 27, 29, 51, and so on are set so that the detection value by the pressure gauges 51 and 52 becomes a preset pressure.
The opening amount of the pipeline 52 is adjusted.

When the liquid to be treated, such as factory wastewater or domestic wastewater, supplied to the storage tank 1 in the above-mentioned wastewater treatment equipment is sent out by the liquid sending pump 21, oxygen gas is supplied to the T-shaped pipe 23 and static mixing is performed. The oxygen gas is mixed into the liquid to be treated in the form of fine bubbles by the vessel 22 and supplied to the bioreactor 2. On the other hand, the energy source material storage tank 4
Is supplied by the circulation pump 39, hydrogen gas is supplied in the T-shaped pipe 41,
The hydrogen gas is mixed in water in the form of fine bubbles by the static mixer 40 and supplied to the bioreactor 2. Then, while the liquid to be treated is sent to one side of the immobilization carrier 11 of the module 10 in the bioreactor 2 and the hydrogen gas-containing water as the energy source substance for the denitrification reaction is sent to the other side, By performing treatments such as denitrification and nitrification, the nitrogen content in the liquid to be treated moves into the hydrogen gas-containing water. The treated liquid that has been subjected to the treatment such as denitrification and nitrification in the bioreactor 2 is sent to a membrane separation device (not shown) by a treated liquid discharge pipe 50 to remove suspended substances, and to be used for lakes, rivers, and the like. Will be released.

In the above-mentioned processing, when the liquid to be treated in the storage tank 1 decreases below the set amount, the pipe of the flow rate control valve 7 is opened to supply the liquid to be treated, and the hydrogen gas-containing water in the energy source material storage tank 4 is reduced. When it decreases, the line of the gate valve 34 is opened by a signal from a liquid level gauge (not shown) or manually to supply tap water. Further, when the concentration of impurities such as nitrogen gas from the liquid to be treated or the concentration of gas such as hydrogen gas jumped out of the hydrogen gas-containing water increases, the pipeline of the pressure control valve 32 is opened and the gas in the storage tank 1 is opened. Is sent out from the gas delivery pipe 31 to a separation device (not shown) to separate and collect hydrogen gas and the like.

The bioreactor 2 of the present invention can be used in an open-circulation type wastewater treatment facility as shown in FIG. , A liquid feed pipe 62, an energy source substance storage tank 63, and an energy source substance feed pipe 64.

The to-be-treated liquid storage tank 61 is provided with a to-be-treated liquid supply pipe 65 having a flow rate control valve 66 and a liquid level gauge 67, and based on a detection signal of the liquid level gauge 67, the pipe of the flow rate control valve 66 is provided. The passage is opened to supply the liquid to be treated.

The liquid supply pipe 62 has a gate valve 69 and has a storage tank 1.
Liquid feed pipe 68 connecting the liquid feed pump 70 with the liquid feed pipe 73 connecting the T type pipe 71 connected to the stationary mixer 72 with the liquid feed pump 70, and gas-liquid separation. Feed tube 75 having a mixer 74 and connecting the stationary mixer 72 and the processing liquid supply hole 9a of the supply side lid member 9 in the bioreactor 2, and a T-shaped tube having a blower 77 and a filter 78 The gas supply pipe 76 is connected to the gas supply pipe 71, and the gas return pipe 79 having the pressure control valve 80 and connecting the liquid storage tank 61 and the gas-liquid separator 74. The pressure control valve 80 has a pipe whose opening amount is adjusted based on a detection signal of a pressure gauge 81 provided in the gas-liquid separator 74. Excess air in the processing liquid mixed air is returned to the storage tank 1.

The energy source material storage tank 63 is provided with a liquid supply pipe 82 having a gate valve 83 and a gas discharge pipe 84.

The energy source material supply pipe 64 has a gate valve 86 and the energy source material storage tank 63 and the circulation pump 8.
7, an energy source substance feeding pipe 88 connecting the energy source substance feeding pipe 68 connecting the circulation pump 87 and the energy source substance feeding hole 9b of the supply side lid member 9 in the bioreactor 2, Hole 1 for discharging energy source material of cover member 13 for discharge in bioreactor 2
3b, and an energy source material return pipe 89 connecting the energy source substance 3b and the energy source substance return pipe 89.

A treated liquid discharge tube 90 is connected to the treated liquid discharge hole 13a of the discharge cover member 13 in the bioreactor 2 described above, and is the same as in the above-described embodiment (FIG. 1). It is released to lakes, rivers, rivers, etc. after removing suspended substances.

When piping is provided so that the supply side position and the discharge side position of the liquid to be treated with respect to the bioreactor 2 can be switched, it is possible to switch from a co-current state to an AC state or from an AC state to a co-current state. , The distribution of the species and the distribution of the number of bacteria can be appropriately controlled. In the above-described bioreactor 2, both the liquid to be treated and the energy source material are supplied and discharged from the lid member, but one of the liquid to be treated and the energy source substance is supplied to the frame 12 of the module 10.
It is possible to supply and discharge from the unit.

[0053]

According to the bioreactor of the present invention, an immobilized carrier containing a biological cell formed in a membrane or a thin plate formed in a predetermined shape as described in claim 1 supplies a liquid to be treated. A module mounted so as to surround the periphery with a frame having a hole, a discharge hole, and a supply hole and a discharge hole for an energy source material, and a supply hole, a discharge hole, and an energy source material for the liquid to be treated. The liquid to be treated and the energy source material supplied from the lid member are overlapped with a lid member having a supply hole and a discharge hole, and the liquid to be treated is placed on one surface of the immobilized carrier and the energy source material is placed on the other surface. Are brought into contact with each other, and the lid member, the module, and the modules are connected to each other.
Or liquid to be treated formed by modules
Supplying the liquid to be processed to either the upper or lower part of the recess
Hole for the liquid to be treated is located on the other side.
The module and / or the lid
Energy generated by the tools and modules
-One of the upper or lower part of the recess for storing source material
The hole for supplying energy source material is located,
Since the configuration is such that the source material discharge holes are located, the bioreactor can be made compact with respect to the separation processing amount of the predetermined component.

Further, even if the removal processing time and removal amount of the specific component are changed, it can be easily dealt with only by changing the number of modules.

Furthermore, since the immobilization carrier is covered by the frame and the cover member, it is possible to prevent the immobilization carrier from being damaged during the transportation and installation work.

According to the present invention, there is provided a wastewater treatment facility comprising: a storage tank for storing a liquid to be treated; a pipe for feeding a liquid to be transported to the bioreactor according to claim 1;
An energy source material storage tank for storing or storing the energy source material and gas-liquid separation, an energy source material circulation pipe for supplying the energy source material to the bioreactor and returning the energy source material to the energy source material storage tank, and fixing the bioreactor Since the liquid to be processed and the control means for controlling the pressure of the energy source substance to be a predetermined value acting on the carrier are used, the pressure of the liquid to be processed and the energy source substance with respect to the immobilized carrier can be adjusted. It is possible to prevent the immobilization carrier from being damaged due to pressure imbalance. Further, specific components such as oxygen gas supplied to the liquid to be treated and specific components such as hydrogen gas supplied to the energy source material can be recovered and used effectively.

[Brief description of the drawings]

FIG. 1 is a schematic system diagram showing one embodiment of the entire configuration of a wastewater treatment facility using a bioreactor of the present invention.

FIG. 2 is a schematic sectional view showing one embodiment of the configuration of the bioreactor of the present invention.

FIG. 3 is a view as seen from an arrow II in FIG. 2;

FIG. 4 is a view taken in the direction of arrows II-II in FIG. 2;

FIG. 5 is a view taken in the direction of arrows III-III in FIG. 2;

6 is a view taken in the direction of arrows IV-IV in FIG. 2;

FIG. 7 is a view taken in the direction of arrows VV in FIGS. 5 and 6;

FIG. 8 is a view taken along the line VI-VI in FIGS. 5 and 6;

FIG. 9 is a view taken in the direction of arrows VII-VII in FIGS. 5 and 6;

FIG. 10 is a view taken in the direction of arrows VIII-VIII in FIG. 2;

FIG. 11 is a view taken along the arrow IX-IX in FIG. 2;

FIG. 12 is a view as viewed in the direction of arrows XX in FIG. 2;

FIG. 13 is a view taken in the direction of arrows XI-XI in FIG. 2;

FIG. 14 shows a carrier 1 on which a liquid to be treated and an energy source substance are immobilized.
It is the schematic which shows the mode when it is conveyed in the state of a parallel flow from 1 as a boundary.

FIG. 15 shows a carrier 1 on which a liquid to be treated and an energy source substance are immobilized.
It is the schematic which shows the mode when it is conveyed in the state of AC after 1 as a boundary.

FIG. 16 is a schematic cross-sectional view showing one embodiment of a configuration of a bioreactor unit in a case where air is supplied to a liquid to be treated instead of oxygen gas.

FIG. 17 is a schematic system diagram showing another embodiment of a wastewater treatment facility using the bioreactor of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 storage tank 2 bioreactor 3 liquid sending pipe 4 energy source substance storage tank 5 energy source substance circulating pipe 6 liquid containing pipe 7 pressure control valve 8 liquid level gauge 9 supply side lid member 10 module 11 immobilized carrier 12 frame 13 Discharge side lid member 14, 15, 16, 56, 57 Packing 17, 55 Bolt 18 Nut 19, 24, 25 Liquid feed tube 20, 34, 38 Gate valve 21 Liquid feed pump 22, 40 Stationary mixer 23, 41 T-type tube 26 Liquid return tube 27, 29, 32, 46, 48 Pressure control valve 28 Oxygen gas supply tube 30 Oxygen gas cylinder 31 Gas delivery tube 33 Liquid supply tube 35, 51, 52 Pressure gauge 36 Concentration meter 37 Energy source material 39 Circulation pump 42, 43 Energy source material feed tube 44, 45 Energy source material return tube 47 Energy Source material supply tube 49 Hydrogen gas cylinder 50 Treated liquid discharge tube 53 Air supply tube 9a, 12a Liquid supply hole 9b, 12c Energy source material supply hole 12b, 13a Liquid discharge hole 12d, 13b Hole for energy source material discharge 53a Hole for air blowing 9h, 12n Hole for penetration

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Michio Hirose 3-4-1-18 Nakanoshima, Kita-ku, Osaka-shi (Mitsui Building No. 2) Toray Engineering Co., Ltd. (72) Inventor Hiromichi Okada 1-chome Sonoyama, Otsu-shi, Shiga No. 1 Toray Engineering Co., Ltd. (72) Inventor Hiroaki Uemoto 1646 Abiko, Abiko, Chiba Prefecture Inside the Abiko Research Institute, Central Research Institute of Electric Power Industry (72) Inventor Tsuneyuki Kondo Nihonbashi Muromachizo Nihonbashi, Chuo-ku, Tokyo No. 1-8, Toray Research Center Co., Ltd. (58) Field surveyed (Int. Cl. ⁷ , DB name) C12M 1/40-3/06

Claims (2)

(57) [Claims] An immobilization carrier containing biological cells formed in a membrane or thin plate formed in a predetermined shape is provided with a supply hole and a discharge hole for a liquid to be treated and a supply hole for an energy source substance. And a module mounted so as to surround the periphery by a frame having a discharge hole, and a lid member having a supply hole for the liquid to be treated, a discharge hole, a supply hole for an energy source material, and a discharge hole. The liquid to be treated and the energy source material supplied from the lid member together are configured such that the liquid to be treated contacts one surface side of the immobilization carrier and the energy source material contacts the other surface side, and the lid member and the module and Modules
Or liquid to be treated formed by modules
Supplying the liquid to be processed to either the upper or lower part of the recess
Hole for the liquid to be treated is located on the other side.
The module and / or the lid
Energy generated by the tools and modules
-One of the upper or lower part of the recess for storing source material
The hole for supplying energy source material is located,
A bioreactor characterized in that a source material discharge hole is located . 2. A storage tank for storing a liquid to be treated, a liquid feeding pipe for supplying the liquid to be treated to the bioreactor according to claim 1, and an energy for storing or storing the energy source material and gas-liquid separation. A source material storage tank, a pipe for circulating an energy source substance that supplies an energy source substance to the bioreactor and returns it to the energy source substance storage tank, and the pressure of the liquid to be treated and the energy source substance that act on the immobilized carrier of the bioreactor. A wastewater treatment facility characterized in that it is configured to be controlled to a predetermined value.