JP2006167623A - Ultra-finely pulverizing device of fluidized material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To continuously and efficiently ultra-finely pulverizing a fluid material to be treated in a short time down to a desired size of a micron order when necessary. <P>SOLUTION: An ultra-finely pulverizing device 1 is provided with a pair of disks 11, 12 separately installed opposite to each other so as to form an ultra-finely pulverizing chamber 5 between the two and relatively rotating around a common center axis x, a motor M1 driving the disk 12 at a relative rotating speed of 500-1,000 rpm through one of supporting shafts 11A, 12A attached to the outer side of the circular disks along the center axis, a supply part 13 supplying a fluid W to be treated into the ultra-finely pulverizing chamber through the other of the supporting shafts, protruding parts 11C, 12C protruding from the inner surfaces of the disks in the state of avoiding collision with each other during rotation and a discharging part 15 discharging an ultra-finely pulverized product from the ultra-finely pulverizing chamber after the fluid clusters and floating matters of the fluid to be treated introduced into the ultra-finely pulverizing chamber are ultra-finely pulverized down to the desired size by agitation of the protruding parts caused by relative rotation of the disks. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an ultrafine apparatus for a fluid that ultrafinely refines a fluid to be treated, which includes a solid object to be treated, such as various organic substances, to a micron level by stirring with a pair of disk protrusions that are driven to rotate at high speed. About.

  Food processing, livestock, and household waste contain a large amount of organic matter, and organic waste is often in the form of a liquid or slurry (fluid) in spite of being a fine solid. , "Okara", a by-product of tofu production, sake lees, soy sauce lees, oil lees, livestock manure discharged from livestock farmers and ranches, raw garbage from households, restaurants, hotels, etc. Some of these are recycled as fertilizers, but most are currently incinerated.

  These fluid wastes contain various forms of components, and in order to use them as, for example, fertilizers, it is preferable to process them into dry powders, granules, pellets, etc. It is necessary to finely pulverize or refine. The wastes such as the above contain relatively long fibers such as vegetable stems and rhizomes, straw in livestock excrement, hard bones, etc., and also contain fats such as fats and oils. In order to granulate with easy drying, it is necessary to pulverize and refine them. Moreover, since these wastes usually contain a large amount of water, the waste is required to be refined while being contained in the liquid.

  There is a prior art using cavitation for miniaturization of organic substances (see Patent Document 1). In Patent Document 1, a water injection nozzle is arranged on one end side of a box-shaped container toward the inside of the container, and air is entrained in the water jet to actively generate cavitation bubbles, The structure is configured to discharge from the opening, and the destruction of cells of organic substances and gas-liquid separation are performed by cavitation flow.

In another technique using cavitation, as shown in Patent Document 2, a high-pressure water injection nozzle and a target plate having a concave surface on the opposite side are disposed in water in a water area such as a pond, and A high-speed water jet accompanied by cavitation was generated in a self-circulating manner, and the cavitation flow decomposed organic matter in the water and destroyed the cell membrane of bacteria to purify stored water over a long period of time. .
JP-A-11-319819 JP2001-017988

  Cavitation phenomenon called cavitation occurs in the high-speed water flow from the water jetting device, and strong force such as shearing, pulling, and compression acts on bacterial cells, and the cells can be destroyed and refined. it can. It is conceivable that this cavitation destruction ability can be used for further minimizing waste as described above by destroying cells, tissues and fibers formed thereby.

  The technology of the above-mentioned patent document destroys relatively flexible fine organic matter such as bacterial cells by the destructive force of the high-speed water stream, but it is instantaneous destruction in the high-speed water stream and has no sustainability. Since the fracture efficiency is low, the structure, fibers, and relatively large blocks including hard portions contained in the material have no practicality. In particular, it was not possible to efficiently apply a jet flow to fibers and lumps. In addition, when processing waste containing fat from animal tissues, the fat is often separated and suspended in water and deposited on a filter to clog the device. It was a problem.

  Also, in the processing of crushing and miniaturization in the container, since the cavitation region is created in the container and continuously operated, the cavitation erosion action and large repeated impact are applied to the metal material constituting the container, It was necessary to pay attention to repeated fatigue failure.

  In view of the above problems, the present invention requires a desired particle size to a micron level continuously and efficiently for a wide variety of solid materials including animal organic materials and water to be processed. It is an object to provide a device with a simple structure and high durability, which can be made ultrafine according to the requirements and can be repeated as necessary.

The present invention includes a pair of disks that are spaced apart from each other so as to form a hyperfine chamber therebetween and that rotate relative to each other about a common central axis.
A support shaft attached to the outside of the disk along the central axis of each disk;
Rotation driving means for rotating the disk at a relative rotation speed of 500 to 1000 rpm via at least one of the support shafts;
A fluid supply means for supplying a fluid to be processed into the ultrafine chamber through at least one of the support shafts;
Protrusions protruding so as not to hit each other during relative rotation on the inner surfaces facing each other of the disk,
After the fluid cluster of the fluid to be treated and / or its floating substance introduced into the ultrafine chamber is ultrafinened to the required particle size down to the micron level by agitation through the protrusions by relative rotation of the disk And a discharge means for discharging from the ultrafine chamber, and a fluid ultrafine device.

  Furthermore, it can have a sealing means for sealing fluid leakage from the ultrafine chamber between the disks, or a means for introducing air into the supply fluid supply means as bubbles.

  In the ultra-miniaturization apparatus in which one of the disks is fixed and has a peripheral wall at the periphery, and the other of the disks is driven to rotate through a support shaft in the vicinity of the peripheral wall of the one disk, the discharge means is The exhaust duct is formed on the peripheral wall of the fixed disk.

  In the ultra-miniaturization apparatus in which the pair of disks are rotationally driven through their respective support shafts, the discharge means is configured by a discharge duct formed on a peripheral wall of a fixed casing that covers the pair of disks. .

  The protrusion may include a pin having a circular, elliptical, rectangular, or polygonal cross section, and the pin may have a flat surface or unevenness on a circumferential surface thereof.

  The discharge duct may have a valve that adjusts a residence time of the fluid to be treated in the ultrafine chamber, and the fluid to be treated is flaky and / or particulate organic waste that floats in water. Can be included.

  The supply means sucks a fluid to be treated from a tank containing a fluid fluid to be treated of flaky and / or particulate organic waste suspended in water and supplies the fluid to the ultrafine chamber. In addition, the discharge means returns the processed fluid which has been subjected to ultrafine processing to the tank, and fermented bacteria and photosynthetic bacteria are supplied to the tank.

  As an effect of the present invention, a pair of disks that are spaced from each other so as to form an ultrafine chamber between them and that rotate relative to each other around a common central axis are attached to the outside of the disk along the central axis. The object to be processed is rotated by the rotation driving means at a relative rotational speed of 500 to 1000 rpm through at least one of the support shafts and is supplied by the supply means into the ultrafine chamber through at least one of the support shafts. The fluid is vigorously agitated by protrusions that protrude from each facing inner surface of the disk so that they do not collide with each other during relative rotation, and the fluid cluster of the fluid to be treated and / or its suspended matter is caused by the relative rotation of the disk. A shearing action by agitation through the protrusion (occurs between the fluid adhering to the side of the protrusion moving at a high speed of 8 m / sec or more and the laminar flow near the surface) The vacuum part of the separation flow generated on the rear surface of the protrusion (moving at a high speed of 8 m / second or more) and the cavitation action by dissolved air (occurs when the processed fluid hits the protrusion moving at a high speed of 8 m / second or higher) Will occur). By these, ultrafine to the required particle size to micron level in a short time, and then discharged from the ultrafine chamber through the discharge means, such as a wide variety of floating solids including animal organic matter and water Can be refined to a desired particle size down to the micron level continuously and efficiently in a short time, and ultra-miniaturization can be performed as needed by limiting the discharge amount of the discharge means It can be repeated, and the operation can be made a relatively durable and highly durable device only by a simple rotational movement of the disk. When suspended solids are micronized, for example, when a spherical workpiece with a radius of 1 mm is made ultrafine to a radius of 0.1 micron, the surface area (specific surface area) per unit weight is almost 10,000 times, If it is processed with a treatment microorganism such as a fermentative bacterium or a chemical after the ultra-miniaturization, the surface area that has been remarkably expanded will be treated extremely efficiently.

  Furthermore, by having a sealing means for sealing fluid leakage from the ultrafine chamber between the disks, leakage of the fluid to be processed from the ultrafine chamber can be minimized. Further, by providing means for introducing air as bubbles to the supply fluid supply means, it is possible to increase the air mixing rate in the fluid to be processed, thereby enhancing the effects of cavitation action, post-treatment aeration process, and the like. .

  In the ultra-miniaturization apparatus in which one of the disks is fixed and has a peripheral wall at the periphery, and the other of the disks is driven to rotate through a support shaft in the vicinity of the peripheral wall of the one disk, the discharge means is When it is composed of a discharge duct formed on the peripheral wall of the fixed disk, one disk is mounted on the fixed part with its support shaft omitted, and the fluid to be treated is stirred only by the rotational drive of the other disk In other words, only one rotation driving means is required, and the duct of the discharging means can be integrated with the peripheral wall of one disk, thereby simplifying the structure of the apparatus.

  In the ultra-miniaturization apparatus in which the pair of disks are rotationally driven through their respective support shafts, the discharge means is configured by a discharge duct formed on a peripheral wall of a fixed casing that covers the pair of disks. In addition, there is a possibility that the rotational drive means and the support shaft are increased to two, and the structure of the device is complicated because a separate fixed casing is required. it can.

  When the protrusion is composed of a pin having a circular or elliptical cross section, it can be manufactured at low cost by cutting the same shape pin from a long rod, and an exchange pin can be prepared at low cost. In the case of a pin having a circular or elliptical cross section, the shearing action can be focused on, and in the case of a rectangular polygon, the impacting action can be focused, and both can be enjoyed by mixing them. The pin can have a flat surface or irregularities on its peripheral surface, and a shearing action, an impact action, and a cavitation action during stirring of the fluid to be treated can be enhanced by a change portion of the peripheral face.

  If the discharge duct has a valve that adjusts the residence time of the fluid to be processed in the ultrafine chamber, the discharge time is reduced by reducing the valve to increase the residence time of the fluid to be processed in the ultrafine chamber. Thus, it is possible to repeatedly apply the ultrafine action to the fluid to be processed. In addition, if the fluid to be treated contains floating organic waste in water, the organic waste is decomposed into water and carbon dioxide in a very short time by adding fermentation bacteria after ultrafine processing. It can be processed.

  The supply means sucks a fluid to be treated from a tank containing a fluid fluid to be treated of flaky and / or particulate organic waste floating in water, and supplies the fluid to the ultrafine chamber. The discharge means returns the treated fluid which has been subjected to ultrafine processing to the tank, and is configured so that fermenting bacteria and photosynthetic bacteria are supplied to the tank. For example, a spherical organic waste having a radius of 1 mm has a radius of 0. When micronized to 1 micron, the surface area per unit weight (specific surface area) is almost 10,000 times larger, and it is very efficiently converted into water and carbon dioxide by treated microorganisms such as added fermentation bacteria and photosynthetic bacteria. It will be subject to decomposition treatment. The photosynthetic bacteria that live in symbiotic relationship with the fermenting bacteria supply the necessary substances with the fermenting bacteria to speed up the culture of the fermenting bacteria, and the photosynthetic bacteria ingest malodorous substances generated by spoilage bacteria And increase the growth of fermenting bacteria. In other words, photosynthetic bacteria are rich in excellent nutrients such as amino acids, minerals and vitamins, and the cells themselves are useful as organic fertilizers, but when they encounter septic sludge, they use hydrogen sulfide generated by sulfate-reducing bacteria as a nutrient source. In addition to active intake, the toxic amines putrescine and cataverine, as well as carcinogenic teratogenic dimethylnitrosamine, are preferably taken as substrates and decomposed and removed. Furthermore, photosynthetic bacteria not only work to reduce the harmful substances that crop roots dislike when they are reduced to green farmland, protect root respiration and nutrient metabolism, and also perform nitrogen fixation to increase crop yield. As described above, it is rich in nutrients and is preferably used as a substrate by actinomycetes in the soil, so that the growth of actinomycetes is also promoted. The propagated actinomycetes kill and kill the phytopathogenic filamentous fungi, and act to control continuous cropping damage caused by the phytopathogenic filamentous fungi.

Next, a fluid ultrafine device according to a representative embodiment of the present invention will be described with reference to the drawings.
1 and 2, a fluid ultrafine device 1 according to a representative embodiment of the present invention includes a fluid to be treated containing organic matter and sludge such as sewage and waste water from a food processing plant as a solid matter to be treated. W is supplied from the treatment tank by a submersible pump, and the solid workpiece and the water cluster are made ultrafine, and the ultrafine treated fluid WA is returned to the treatment tank to which the fermentation bacteria are added. A pair of disks 11, 12 that are spaced parallel to each other so as to form the ultrafine chamber 5 and face each other so as to rotate relative to each other about a common horizontal central axis x, and their central axes x The support shafts 11A and 12A are attached to the outside of the disks 11 and 21 along the shafts 12 and the rotary drive at a variable speed through the shear pin joint 12B at a relative rotational speed of 500 to 1000 rpm through one of the support shafts 12A. An inverter motor M1 that supplies the fluid to be processed that is pumped into the ultrafine chamber 5 via the internal passage 11B of the other fixed support shaft 11A of the support shaft, and the supply portion And an ejector 14 that introduces air from the conduit 14B as bubbles to the processing fluid W at the throat portion 14A of the venturi conduit by the high-speed flow of the processing fluid W, and the processing target supplied to the inside of the ultrafine chamber 5 A plurality of protrusions 11C and 12C projecting from the respective inner surfaces facing each other of the disks 11 and 12 so as to agitate the processing fluid W so as not to contact each other during the relative rotation, and strong agitation by these protrusions, thereby providing a target fluid W The fluid cluster and the floating organic matter are refined in a short time to the required particle size down to the micron level by stirring, and then discharged from the ultrafine chamber 5 When, and a seal portion 16 for preventing leakage of the fluid to be treated from between disk 11 and 12 rotate relative to each other.

  The supply unit 13 is composed of a submerged pump of the processing tank for the fluid to be processed, an internal passage 11B of the fixed support shaft 11A, and a pump unit of the apparatus 1. The fluid to be processed is once transferred to the ultrafine chamber 5 by the submersible pump. When W is supplied, the fluid W to be processed is continuously discharged from the processing tank by the pumping action in the ultra-miniaturization chamber 5 (pump unit using centrifugal force received from a disk or a projection) as the apparatus 1 is operated. Suction is performed (at the start of operation, the conduit 14B is closed by its valve and is opened after the operation is stabilized). The discharge duct 15 </ b> A of the discharge unit 15 is formed integrally with a part of the peripheral wall 11 </ b> D of the fixed disk 11. The discharge duct 15A is provided with a valve V1 for controlling the discharge amount of the processed fluid, and the valve V1 is throttled to increase the time for the ultrafine processing of the fluid W to be processed in the ultrafine processing chamber 5. And can promote ultra-miniaturization. The seal portion 16 is configured with a labyrinth structure including fine irregularities on the peripheral surface of the rotating disk 12 and fine irregularities on the edge of the peripheral wall 11D of the fixed disk 11. In order to further improve the sealing performance, the labyrinth structure may be added by extending the peripheral wall 11D of the fixed disk 11 to approach the rotation support shaft 12A. Concavities and convexities 11E and notches are provided on the inner surface of the peripheral wall 11D of the fixed disk 11 to enhance the shearing action, impact action, and cavitation action.

  The protrusions 11C and 12C are pins whose thicknesses and lengths and positions along alternate concentric circles are determined so that the opposed ones do not come into contact with each other during the rotation of the disk 12 (in FIG. The pin of the fixed disk 11 and the absence of the hatching line are composed of the pin of the rotating disk 12). The interval between the opposed protrusions 11C and 12C is determined according to the rotational speed of the disk 12. As the pins 11C and 12C, those having a circular or elliptical cross section shown in FIG. 4 are preferable in terms of manufacturing cost. However, as shown in FIG. The formed one is also used to strengthen the cavitation action. Furthermore, the cross section of the protrusion can be a rectangle or a polygon with a focus on the impact action in addition to a circle or an ellipse with a focus on the shearing action. It is also possible to enjoy both shearing action and impact action. In addition, it is possible to maximize the impact effect by making the sides of the rectangle or polygon orthogonal to the rotation direction, or to enjoy both the shear effect and the impact effect by matching the corner of the rectangle or polygon to the rotation direction. .

  According to the fluidized ultrafine device 1 configured as described above, the disk 12 is rotationally driven by the motor M1 at a high speed of 500 to 1000 rpm and is vigorously stirred by the protrusions 11C and 12C. Along with a wide variety of suspended solids including organic matter and water and other objects to be treated, it can be continuously and efficiently repeated to the desired particle size up to the micron level, and repeated ultra-miniaturization as necessary. Since the operation is only rotation, a device having a relatively simple structure and high durability can be provided. When suspended solids are micronized, for example, when a spherical workpiece with a radius of 1 mm is made ultrafine to a radius of 0.1 micron, the surface area (specific surface area) per unit weight is almost 10,000 times, If it is processed with a treatment microorganism such as a fermentative bacterium or a chemical after the ultra-miniaturization, the surface area that has been remarkably expanded will be treated extremely efficiently.

  As shown in FIG. 3, a fluid ultrafine device 2 according to another embodiment of the present invention has a structure different from the representative embodiment in which both disks 21 and 22 are fixed to a fixed casing 25 with a duct 25A (the main part of the discharge means). Are driven by inverter motors M2 and M3 in opposite directions to each other via support shafts 21A and 22A. Even if the rotational speeds of the disks 21 and 22 are kept low, they are large. This is advantageous in that a relative speed can be obtained. The seal portion 26 between the fixed casing 25 and the rotation support shafts 21A and 22A is further advantageous by lowering the rotation speed than the above embodiment, and is provided for the support shafts 21A and 22A having a low peripheral speed. It is done. The arrangement and configuration of the protruding pins 11C and 12C can be the same as those in the above-described embodiment. However, in both embodiments, it is not necessary to arrange the pins 11C and 12C along concentric circles or at equal intervals as long as the opposing ones do not hit each other without impairing the rotational balance of the disks. Supply of the processed fluid W to the ultrafine chamber 5 is performed by supplying the processed fluid W to the internal passage 21 </ b> B of one rotary support shaft 21 </ b> A through the rotary joint 23 </ b> A by the submersible pump in the processing tank. Similarly to the representative embodiment, an ejector 24 that introduces air from the conduit as air bubbles to the fluid W to be processed is provided in the internal passage 21B in the venturi section. Similarly to the representative embodiment, the supply portion 23 of the fluid to be processed W is provided with an ejector 24 that introduces air from the conduit 24B as bubbles to the fluid to be processed W at the throat portion 24A of the venturi conduit by the high-speed flow of the fluid to be processed W. It has been.

Thus, by the ultrafine apparatus 1 and 2 of the present fluid, for example, a spherical organic substance having a radius of 1 mm has a specific surface area of only 0.00120 m ² / g and is refined into a sphere having a radius of 0.0001 mm. If this is the case, the specific surface area is 12.0 m ² / g, which is 10,000 times as described above. Therefore, 10,000 times the number of fermentation bacteria added in the treatment tank can adhere to the surface. In addition, it is possible to efficiently sterilize organic matter and mass culture fermented bacteria. Fermented bacterial species such as Lactobacillus are those collected at the site of processing organic matter and culture of fermented bacteria, and are preferably those that have survived in the climate of the site. It is possible to obtain a strong fermentative bacterium that can fully exert its effect without causing any effect. In addition, photosynthetic bacteria that have a symbiotic relationship are added to treatment tanks, etc., supplying necessary substances to accelerate culture, and when used for liquid fertilizer, photosynthetic bacteria contain malodorous substances that spoilage bacteria generate. Take it as a source of nutrients, and fermented bacteria increase the growth potential as explained below. In other words, photosynthetic bacteria are rich in excellent nutrients such as amino acids, minerals and vitamins, and the cells themselves are useful as organic fertilizers, but when they encounter septic sludge, they use hydrogen sulfide generated by sulfate-reducing bacteria as a nutrient source. In addition to active intake, the toxic amines putrescine and cataverine, as well as carcinogenic teratogenic dimethylnitrosamine, are preferably taken as substrates and decomposed and removed. Furthermore, photosynthetic bacteria not only work to reduce the harmful substances that crop roots dislike when they are reduced to green farmland, protect root respiration and nutrient metabolism, and also perform nitrogen fixation to increase crop yield. As described above, it is rich in nutrients and is preferably used as a substrate by actinomycetes in the soil, so that the growth of actinomycetes is also promoted. The propagated actinomycetes kill and kill the phytopathogenic filamentous fungi, and act to control continuous cropping damage caused by the phytopathogenic filamentous fungi.

  As an example of use of the present invention, if manure collected in mountains and remote areas without sewerage facilities is made ultrafine by using this ultrafine device, a large amount of fermented bacteria are introduced together with photosynthetic bacteria, which is also used for toilet purification. it can. It can also be applied to the elimination of organic matter contained in sewage, food processing plants and livestock-related wastewater, liquid fertilization, and excess sludge.

1 is a partially cutaway elevation view schematically showing a fluid ultrafine device according to a representative embodiment of the present invention. FIG. Sectional drawing along the II-II line | wire in FIG. FIG. 6 is a partially cutaway elevation view schematically showing a fluid ultrafine device according to another embodiment of the present invention. The cross section of the pin of a projection is shown, (a) is a circular cross section and (b) is an elliptical cross section. The cross section which concerns on another embodiment of the pin of a processus | protrusion is shown, (a) is a variable circular cross-sectional view, (b) is a variable elliptical cross section.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Super miniaturization apparatus of representative embodiment 2 Ultra miniaturization apparatus of representative embodiment 5 Ultra miniaturization chamber 11 Fixed disk 12 Rotating disk 11A Fixed support shaft 12A Rotation support shaft 11C Protrusion (pin)
12C Protrusion (pin)
13 Supply means 14 Air introduction means 15 Discharge means 15A Discharge duct 16 Sealing means 21 Rotating disk 22 Rotating disk 21A Rotating support shaft 22A Rotating support shaft 23A Supply means (rotating joint)
25 Discharge means (fixed casing)
25A Discharge duct 26 Sealing means M1 Rotation drive means M2 Rotation drive means M3 Rotation drive means V1 Valve x Center axis

Claims (10)

A pair of disks that are spaced apart from each other to form a hyperfine chamber therebetween and that rotate relative to each other about a common central axis;
A support shaft attached to the outside of the disk along the central axis of each disk;
Rotation driving means for rotating the disk at a relative rotation speed of 500 to 1000 rpm via at least one of the support shafts;
A fluid supply means for supplying a fluid to be processed into the ultrafine chamber through at least one of the support shafts;
Protrusions protruding so as not to hit each other during relative rotation on the inner surfaces facing each other of the disk,
After the fluid cluster of the fluid to be treated and / or its suspended substance introduced into the ultrafine chamber is ultrafinened to the required particle size down to the micron level by stirring through the protrusions by relative rotation of the disk And a discharge means for discharging from the ultrafine chamber, and a fluid ultrafine device.   2. The apparatus according to claim 1, further comprising sealing means for sealing fluid leakage from the ultrafine chamber between the disks.   The apparatus according to claim 1, further comprising means for introducing air into the supply fluid supply means as bubbles.   In the ultra-miniaturization apparatus in which one of the disks is fixed and has a peripheral wall at the periphery, and the other of the disks is driven to rotate through a support shaft in the vicinity of the peripheral wall of the one disk, the discharge means is The apparatus according to claim 1, wherein the apparatus comprises a discharge duct formed on a peripheral wall of a fixed disk.   In the ultra-miniaturization apparatus in which the pair of disks are rotationally driven via their respective support shafts, the discharge means is configured by a discharge duct formed on a peripheral wall of a fixed casing that covers the pair of disks. The apparatus of claim 1.   The apparatus of claim 1, wherein the protrusion comprises a pin having a circular, elliptical, rectangular or polygonal cross section.   The device according to claim 6, wherein the pin has a flat surface or irregularities on a peripheral surface thereof.   6. The apparatus according to claim 4, wherein the discharge duct has a valve for adjusting a residence time of the fluid to be treated in the ultrafine chamber.   9. The apparatus according to claim 1, wherein the fluid to be treated contains flaky and / or particulate organic wastes floating in water. The supply means sucks a fluid to be treated from a tank containing a fluid fluid to be treated of flaky and / or particulate organic waste suspended in water and supplies the fluid to the ultrafine chamber. The apparatus according to claim 1, wherein the discharge means returns the processed fluid subjected to the ultrafine processing to the tank, and fermented bacteria and photosynthetic bacteria are supplied to the tank.

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