JPH11128995A - Device and process for bacteria mixing purification - Google Patents

Abstract

PROBLEM TO BE SOLVED: To purify sludge and compost the same to utilize the sludge effectively and also carry out a series of sludge treatments efficiently, simply and quickly. SOLUTION: A mixing drum 10 is supported rotatably by a rotation supporting device 31, and side face plates 12 set on both side faces of the drum are pressed by a press mechanism 13 and supported in the non-rotating state, and protruded sludge inlet and outlet opening 18 is formed on an outer peripheral wall 11a of a cylinder of the drum into which the sludge is introduced, and a crushing and mixing mechanism 20 provided in the drum is constituted of a rotation driving shaft 22, a rotating blade 23 and a driving device 24. The sludge scooped up on scooping fins 15 by the rotation of the drum in the given direction is crushed finely by the rotating blade and bacteria are mixed therein, and air feed openings 16 are provided on the side face plates and air is mixed into the mixing drum, and air vents 17 are formed on side face plate 12 to discharge freely vapor and odor generated by the fermentation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates generally to sludge (in this specification, general waste such as human waste such as human waste, garbage and meat pieces discharged from factories, and industrial waste such as sludge and animal waste). The present invention relates to a bacteria-mixed purification apparatus and a bacteria-mixed purification method in a sludge treatment system for performing fermentation and purification treatment by the action of bacteria.

[0002]

2. Description of the Related Art Sludge has been conventionally treated. These treatments are roughly classified into "purification treatment" in which sludge is purified using the decomposing power of microorganisms, and "marine dumping" in which the sludge is dumped in the ocean.

As the purification treatment, a purification treatment using microorganisms in nature and a purification treatment using microorganisms added intentionally have been proposed. As an example of a treatment using microorganisms in nature, there is a treatment in which sludge is buried in the ground and purified by natural fermentation and decomposition by microorganisms.

As a treatment using a microorganism intentionally added, a method utilizing a thermophilic bacterium has been proposed. Thermophiles grow at temperatures higher than the temperature range at which normal room temperature microorganisms grow, and they not only degrade organic matter, but also expose pathogens and harmful parasite eggs in sludge to high temperatures. It can be inactivated. As a specific treatment process, fermentation is started by bacteria such as bacteria, fungi and actinomycetes that grow at relatively low temperature among various microorganisms inhabiting the sludge, and these are rapidly increased with the progress of the composting process. Proliferate, and at the same time, the temperature rises to 30 to 60 ° C. due to the heat of decomposition of organic matter. At this time, yeasts, molds, nitric acid bacteria, etc., which are sensitive to temperature, die. When the temperature rises, the thermophile added intentionally begins to grow,
Furthermore, the heat of fermentation increases, and most of pathogenic bacteria, diseased eggs, harmful insect eggs, viruses, weed seeds, and the like are inactivated and become harmless to humans and animals. By using not only normal thermophiles but also thermophiles with particularly high thermophilicity such as biocolonies and bioheats (both manufactured by Biospecial Co., Ltd.) It is possible to raise and ferment. By using thermophiles in this way, fermentation at higher temperatures becomes possible, and therefore the treatment time can be significantly reduced as compared to natural fermentation, and the purification and stabilization of sludge can be further enhanced. There is such a merit.

There is also a method using a phototrophic bacterium as the above bacterium. Specifically, as a bacterium, a phototrophic bacterium which is immobilized on a carrier is added to a target object (Japanese Patent Laid-Open Publication No.
No. 111694), and a device for processing an object by mixing the bacteria immobilized on a carrier into a pipe-shaped processing tube device (Japanese Patent Application Laid-Open No. Hei 8-224592). Here, "phototrophic bacteria" generally refer to photosynthetic bacteria (Ph
Bacteria called otosynthetic bacteria) are described in Bergey's Manual of Determinative Bacteriol.
ogy 8th edition (1974) "
Means those disclosed as Phototrophic bacteria. Specific examples thereof include, but are not particularly limited to, Rhodospirillaceae including Rhodospirillum, Rhodopseudomonas, and Rhodomicrobium; Chromatiaceae including Chromatium; Chlorobiaceae including Chlorbium alone; Or a mixture of two or more.

The phototrophic bacteria alone are eaten by predators in the treatment tank, and in order to maintain the treatment efficiency at a predetermined level, replenishment of the phototrophic bacteria is required during the treatment, which is inconvenient. As an embodiment, a "carrier" for immobilizing the phototrophic bacterium therein can be used by adding it at a predetermined ratio to the phototrophic bacterium. As such a "carrier", porous particles are preferable in terms of a high fixation rate of phototrophic bacteria, and more specifically, perlite, vermiculite, diatomaceous earth, activated carbon, and porous ceramics are preferable. In addition to the porous particles, a polyvinyl tube filled with a carrier containing immobilized phototrophic bacteria or a hydrogel carrier such as sodium alginate and / or calcium alginate can also be used as a preferred carrier.

[0007]

However, among the above-mentioned conventional purification treatments, the treatment using microorganisms in nature requires a long time to be purified and has a strong fermentation odor. There is also the fact that modern urban housing is scarce on the soil. The purification efficiency of human waste and feces other than garbage is not yet sufficient. Furthermore, treatment using intentionally added microorganisms is regarded as promising as a new purification treatment method without the above-mentioned problem. However, although the basic principle has been established as described above, the treatment can be performed efficiently. A system and an apparatus for performing the operation simply and quickly have not been proposed yet, and have not been put to practical use. In particular, not only large-scale processing at the company or local government level, but also practical use of a relatively small-scale processing apparatus is desired. In addition, in the processing by ocean dumping, it has been determined that the ocean dumping will be completely prohibited soon, and there is a strong demand for establishment of a processing method to replace the processing.

The present invention has been made in view of the above-mentioned conventional problems, and purifies sludge composed of waste such as night soil, animal dung, garbage, and the like, and aims to effectively use the sludge by composting. It is an object of the present invention to provide a germ mixture purifying apparatus and a germ mixture purifying method which can efficiently, simply and quickly carry out the treatment of germs.

[0009]

According to the first aspect of the present invention, there is provided a cylindrical mixing drum for feeding sludge, crushing and mixing bacteria with a rotary support device. A side plate is attached to both sides of the mixing drum in a surface contact manner, and the side plate is non-rotatably supported on a side surface of the mixing drum by a support mechanism.
An inlet / outlet opening is provided on the outer peripheral wall side of the mixing drum cylinder so that sludge can be taken in or taken out, and a scooping fin is provided on the inner peripheral wall of the mixing drum, and the sludge is moved upward by the rotation of the mixing drum. The mixing drum is equipped with a pulverizing and mixing mechanism for promoting uniform fermentation by uniformly pulverizing the input sludge and uniformly mixing with the bacteria. Is a rotary drive shaft rotatably supported via a side plate,
It consists of a rotary wing attached to this rotary drive shaft and a drive device for rotating the rotary drive shaft, and the sludge scooped up by the scooping fins is finely pulverized by the rotary wings to mix bacteria. It is configured to be free.

According to a second aspect of the present invention, in the first aspect of the present invention, the mixing drum is rotated in a direction in which an opening portion of the inlet / outlet opening moves upward to mix the sludge with bacteria. By rotating the mixing drum in a direction opposite to the rotation at the time of mixing the bacteria-mixed or fermented content in the mixing drum, the content can be taken out from the inlet / outlet to the outside in an appropriate amount. The feature is constituted.

According to a third aspect of the present invention, in the first or the second aspect of the present invention, the rotary drive shaft to which the rotary wing is attached is located at a rotation-up position on the upper side of the rotation center of the mixing drum. The sludge thus scooped is mounted eccentrically at the position where it is dropped.

According to a fourth aspect of the present invention, in the first to third aspects of the present invention, an air supply port is provided in the side plate so that air can be freely mixed into the mixing drum, and By providing an air vent, steam or odor generated when the sludge mixed with the bacteria is fermented in the mixing drum can be discharged to the outside through the air vent.

According to a fifth aspect of the present invention, in the first to third aspects of the present invention, the side plate is provided with an air supply port and an air vent, and the steam discharged from the air vent to the outside is provided. Alternatively, a pipe for guiding water condensed with the steam to the air supply port again is provided, and a condenser for condensing the steam is provided in the middle of the pipe.

According to a sixth aspect of the present invention, in the fourth or fifth aspect of the present invention, a blower mechanism is provided in the mixing drum, and the blower mechanism supports a number of blowers and the blowers. A pair of support pipes, the air supply port is connected to the support pipe in a communication manner via the side plate,
A large number of small tubes connected to the spindle tube are formed in the inside of the blower plate, and the air can be freely blown into the mixing drum through the air supply port, the spindle tube, and the small tube. You.

According to a seventh aspect of the present invention, in the first to sixth aspects, the peripheral wall of the mixing drum is formed by a double wall of an outer peripheral wall and an inner peripheral wall. It is characterized by comprising a heating pipe for circulating hot water between the double walls.

According to the present invention, a cylindrical mixing drum for charging sludge, mixing, and mixing bacteria is rotatably supported by a rotary support device, and is provided on both side surfaces of the mixing drum. The side plate is attached in a face contact manner, the side plate is non-rotatably supported on the side surface of the mixing drum by a support mechanism, and an inlet / outlet opening is provided on the outer peripheral wall side of the cylinder of the mixing drum, and on the inner peripheral wall thereof. A scooping fin is provided, the mixing drum is provided with a pulverizing / mixing mechanism, and the pulverizing / mixing mechanism is rotatably supported rotatably with a side plate interposed therebetween, and a rotatable blade attached to the rotatable driving shaft. And a driving device for rotating a rotary drive shaft. Sludge is taken into the mixing drum from the inlet / outlet opening, and the mixing drum is rotated for a predetermined time in a direction in which the opening portion of the inlet / outlet opening moves upward, and the sludge is removed. Is mixed with bacteria and processed, The bacteria-mixed sludge subjected to the bacteria-mixing process is fermented while being kept stationary for a predetermined time, and then the fermentation-processed content obtained by performing the fermentation process by rotating the mixing drum in a direction opposite to the rotation during the mixing. The apparatus is characterized in that an object is taken out from the inlet / outlet to the outside in an appropriate amount.

According to a ninth aspect of the present invention, in accordance with the eighth aspect of the present invention, the fermentation treatment is performed while the stationary state is maintained for a predetermined time, and then the bacteria mixing treatment by rotating the mixing drum is performed again. Next, the stationary state is maintained for a predetermined time, and the fermentation process is repeated.

According to a tenth aspect of the present invention, a cylindrical mixing drum for introducing sludge, crushing and mixing bacteria is rotatably supported by a rotary support device, and is provided on both side surfaces of the mixing drum. The side plate is attached in a surface contact manner, the side plate is non-rotatably supported on the side surface of the mixing drum by a support mechanism, and an inlet / outlet is provided on the outer peripheral wall side of the cylinder of the mixing drum,
A scooping fin is provided on the inner peripheral wall thereof, and the mixing drum is provided with a pulverizing / mixing mechanism. The pulverizing / mixing mechanism is rotatably supported via a side plate, and is attached to the rotatable driving shaft. And a driving device for rotating a rotary drive shaft. Sludge is taken into the mixing drum from the inlet / outlet opening, and the mixing drum is moved in a predetermined direction in which the opening of the inlet / outlet opening moves upward. The sludge is mixed with bacteria by rotating for a time to be treated, and the bacteria-mixed sludge subjected to the bacteria-mixing treatment is fermented while rotating the mixing drum, and then the mixing is performed in a direction opposite to the rotation during the mixing. By rotating the drum, the fermented contents obtained by the fermentation treatment are taken out from the inlet / outlet in an appropriate amount by an appropriate amount.

[0019]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a longitudinal sectional view of the first embodiment of the present invention viewed from the outer peripheral wall portion direction, FIG. 2 is a longitudinal sectional view of the first embodiment viewed from the side plate direction, and FIG. 3 is a side view of the first embodiment viewed from the side plate direction. Is shown. FIG. 4 is a longitudinal sectional view of the second embodiment of the present invention viewed from the side plate. FIG. 5 is a perspective view of a third embodiment of the present invention, and FIG. 6 is a longitudinal sectional view of the third embodiment viewed from the side plate.

First, a first embodiment of the present invention will be described with reference to FIGS. That is, in the first embodiment of the present invention, the mixing drum 10 is basically rotatably supported on the base 30 via the rotation support device 31, and the mixing drum 10 has a diameter of about 2 m. It is formed in a cylindrical shape and is rotated at a low speed by a rotation support device 31. Side plates 12, 12 are attached to both sides of the mixing drum 10 in a surface contact manner. The side plates 12, 12 are supported by support arms 21, 21 via a rotary drive shaft 22, and a pressing mechanism 13, 1 provided on the support arms 21, 21 as a support mechanism.
3, the pressure is constantly pressed against the side surface of the mixing drum 10 at a constant pressure and is supported non-rotatably. The above support arm 2
The reference numerals 1 and 21 are provided on the outside of both sides of the mixing drum 10 in a portal shape. The supporting mechanism is a pressing mechanism 13, 1
3, the side plate 1 from the inside of the mixing drum 10
The support may be performed by another method such as suctioning the second and the second.

A packing member 14 is interposed between the side plate 12 and the side surface of the mixing drum 10. The peripheral wall of the cylinder of the mixing drum 10 is formed by a double wall of an outer peripheral wall portion 11a and an inner peripheral wall portion 11b.
Good heat retention. The heat insulating property and the heat retaining property may be further improved by passing a heating pipe for circulating hot water between the double walls or by filling a heat insulating material. Note that the peripheral wall of the cylinder of the mixing drum 10 does not necessarily have to be a double wall, and may be a single wall. In this case, in order to maintain heat insulation and heat retention inside the mixing drum, the peripheral wall of the cylinder is A heat insulating material such as a heat insulating film may be wound around the outside.

An inlet / outlet 18 for taking in or taking out sludge is formed on the outer peripheral wall 11a side. The access opening 18
Has a lower surface integrally continuous with the lower surface of the outer peripheral wall portion 11a, and is formed between drive rollers 32, 32, which will be described later, and has a substantially wide shape in the longitudinal direction of the mixing drum 10. An inlet / outlet valve 19a is provided at the inlet / outlet opening 18 so that the vapor and odor in the mixing drum 10 are not discharged to the outside.
Is provided.

The inner peripheral wall 11b of the mixing drum 10 is provided with a large number of scooping fins 15 and 15 made of long thin plates in the longitudinal direction thereof, so that the sludge is scooped up at the rotation-up side position. Are formed to be inclined with respect to the inner peripheral wall portion 11b. And the mixing drum 1
Sludge is scooped up by the rotation of zero. Although the mixing drum 10 is formed in a cylindrical shape, it may be formed in a polygonal cylindrical shape such as a hexagon or an octagon.

The air supply port 1 is connected to the side plates 12, 12.
6 and 16 are provided so that air can be freely mixed into the mixing drum 10 from both side surfaces, and an air vent 17 is provided in one side plate 12 so that air can be freely discharged from the mixing drum 10. Air is mixed into the mixing drum 10 from the air supply ports 16 and 16 to promote fermentation of sludge, and steam and odor generated and filled by the fermentation process are discharged from the air vent 17 to the outside. is there. Further, by making the inside of the mixing drum 10 slightly negative pressure with respect to the outside air pressure, air can be naturally mixed and steam and odor can be naturally discharged. By providing a temperature sensor in the mixing drum 10, the fermentation temperature of the sludge is constantly measured, and the air pressure is adjusted according to the fermentation temperature so that air can be taken in and out to adjust the fermentation temperature. The air supply ports 16, 16 are provided with check valves 19b, 19b to prevent sludge and air in the mixing drum 10 from flowing back through the air supply ports 16, 16. A pipe 50 for guiding the steam discharged to the outside from the air vent 17 or the water condensed with the steam to the air supply port 16 again, and a pipe 50 for condensing the steam in the middle of the pipe 50. It is a preferable embodiment to provide the condenser 51 and to circulate the steam generated during the fermentation again in the mixing drum 10 since the odor generated in the mixing drum 10 can be eliminated. .

Next, the mixing drum 10 is provided with a pulverizing and mixing mechanism 20 for uniformly pulverizing the introduced sludge and uniformly mixing the sludge with the bacteria to promote uniform fermentation. The pulverizing / mixing mechanism 20 includes the rotary drive shaft 22, a rotary blade 23 attached to the rotary drive shaft 22, flywheels 25 for smooth rotation of the rotary drive shaft 22, and the rotary drive shaft 22. And a driving device 24 for rotating the driving shaft 22 at high speed. The rotary drive shaft 22 has the side arms 12, 12 and the flywheels 25, 25 interposed therebetween, and the support arms 21, 2
1 to be rotatably supported. The rotary drive shaft 22 is eccentrically attached to a position where the scooped sludge is dropped, which is an upper position of the rotation center of the rotation center of the mixing drum 10 and a position where the scooped sludge falls. It is close to the scooping fins 15.

The rotating wings 23 are composed of a large number of wavy wings, and these wavy wings are axially mounted substantially perpendicularly to the rotation drive shaft 22. In addition, a screw is formed by radially attaching three wavy wings to one layer to form a screw, and a large number of such screws are formed in a layered manner in the axial direction.
Further, the rotating wings 23 may be formed by arranging a number of wavy wings in a spiral and attaching the rotating wings 23 to the rotation driving shaft 22.
The periphery of the wavy wing is formed with a sharp tip, and when the rotary drive shaft 22 is rotated at a high speed by the driving device 24, the rotary wing 23 rotates at a high speed to pulverize the sludge into a cut shape.

Flywheels 25, 25 are mounted outside the side plates 12, 12, respectively. The flywheels 25, 25 are provided for smoothing the rotation of the rotary drive shaft 22 constituting the crushing and mixing mechanism 20 and reducing the cutting load when cutting the sludge supplied by the rotary wings 23. In the present embodiment, the center is pivotally supported by the rotary drive shaft 22. However, if the rotary wing 23 has a sufficient inertial force, it is not always necessary to provide the rotary wing 23. Further, a rotary drive device 24 for rotating the rotary drive shaft 22 to drive the crushing and mixing mechanism 20 is mounted outside the one flywheel 25.

With the above structure, the sludge scooped by the scooping fins 15 with the rotation of the mixing drum 10 is dropped on the rotating blades 23 rotating at a high speed and finely pulverized. The sludge that has fallen further downward is continuously scooped up again by the scooping fins 15 again, dropped on the rotating blades 23, and further pulverized.

Next, the rotation supporting device 31 of the mixing drum 10
Is configured as follows. That is, the mixing drum 10 is rotatably supported on the base 30 by the driving rollers 32, 32, and the driving roller 32 is rotationally driven by the roller driving device 33 via the roller rotating shaft 34. The driving roller 32 is used for the mixing drum 1.
The mixing drum 10 is rotated at a low speed by friction drive or gear drive in contact with the lower surface portion of the outer peripheral wall portion 11a. This rotation speed is set to a speed of about 1 to 10 rotations per minute.

Next, the operation of this embodiment will be described. First, the outer peripheral wall 11 of the rotating mixing drum 10 is
The sludge to be treated is introduced from the inlet / outlet opening 18 provided at a. At this time, an appropriate amount of the thermophilic bacterium described above is added at the same time. The input amount is, for example, about 50 to the weight of the sludge to be input.
The thermophilic bacterium of 1/0 weight is injected. In this example, a thermophilic bacterium is used as a bacterium to be added. However, the bacterium is not limited to the thermophilic bacterium. You may throw in both. When using phototrophic bacteria, it is necessary to separately provide a light irradiation device. In addition, instead of adding thermophilic bacteria, a part of fermented contents described below (the fermented content of the fungus-mixed sludge is referred to as fermented contents. The same applies hereinafter) is used as a return material (of the fermented contents, What is mixed again into the mixing drum 10 is called a return material. The same applies to the following. That is, since thermophilic bacteria are sufficiently cultured in the fermented contents, the use of the thermophilic bacteria eliminates the necessity of introducing new thermophilic bacteria. Also, by introducing this returning material, it can also play a role as a moisture adjusting material for adjusting the moisture in the newly introduced sludge. This is particularly effective when newly introduced sludge does not hold the water required for fermentation. Further, a deodorant may be injected from the air supply port 16 in order to eliminate the odor of the sludge. As a deodorant, it is effective to collect in advance the steam generated in the fermentation treatment and inject it.

On the inner peripheral wall 11b of the mixing drum 10, a large number of scooping fins 15, 15 made of thin pieces are provided, and by the rotation of the mixing drum 10, the sludge is scooped upward. At this time, the mixing drum 10 is rotated at a low speed in a direction in which the end on the opening portion side of the inlet / outlet 18 moves upward so as to prevent the sludge from flowing back toward the inlet / outlet 18. Then, the scooped sludge falls on the rotating blades 23 rotating at a high speed and is finely crushed. Then, the sludge that has fallen further downward is continuously scooped up again by the scooping fins 15 again, falls again on the rotating blades 23, and is further finely pulverized.

The above-mentioned bacteria are mixed with the sludge finely ground in such a manner. While the rotation is stopped or rotated, the bacteria-mixed sludge (the sludge mixed with the bacteria in the mixing drum 10 is referred to as a bacteria-mixed sludge; the same applies hereinafter) is held and fermented while being kept in the mixing drum 10. .

When the inside of the mixing drum 10 is set to a negative pressure and air is mixed in from the air supply port 16, the mixing drum 1
Fermentation is promoted by increasing the aerobicity within zero. Since the fermentation has already started when the mixing drum 10 is being rotated, it is not limited to the curing period in the stationary state that the air is mixed through the air supply port 16 to promote the fermentation. It is desirable to make the inside of the mixing drum 10 a negative pressure. The steam and odor generated in the fermentation treatment are discharged to the outside using the air vent 17 as described above, and the discharged steam and the like are supplied again from the air supply port 16 as necessary.

In order to uniformly mix the bacteria with the sludge, the mixing drum 10 is again rotated in a certain direction, and the mixing process is repeated. Further, bacteria may be further added to further promote fermentation. The degree of acceleration of fermentation, the fermentation temperature, and the like are adjusted by adjusting the amount of the bacteria and the amount of air to be mixed. Purification is promoted as the fermentation temperature increases. The bacteria-mixed sludge is purified through a curing period of about two days while repeating the above series of processes several times.

The fermented contents purified after the completion of the fermentation treatment can be taken out through the inlet / outlet opening 18. In this case, a case for taking in the fermented contents is placed on the side opposite to the side into which the sludge is introduced into the inlet / outlet opening 18 of the mixing drum 10, and rotated in a direction opposite to the direction rotated during the bacteria mixing process. By doing so, the fermented contents fall into the case through the inlet / outlet opening 18. Mixing drum 1
Since a large number of scooping fins 15 are attached to the inner peripheral wall portion 11b inside 0 and the contents are closed, it is possible to prevent a large amount from falling into the case during the reverse rotation and to take out a suitable amount. The fermented content is used as a processed product (the fermented content that is composted and used as a fertilizer is referred to as a processed product. The same applies to the following). It can be left in the mixing drum 10 or mixed with sludge.

Next, in the second embodiment of the present invention, FIG.
This will be described with reference to FIG. This embodiment has basically the same configuration as the first embodiment, but in this embodiment,
The rotating blades 23 constituting the crushing and mixing mechanism 20 are formed to have a substantially large diameter, and the lower half of the rotating blades 23 is positioned below the rotary drive shaft 22 to which the rotating blades 23 are attached.
The rotary blade 23 is directly crushed by the rotation of the rotary drive shaft 22 so as to be buried in the sludge accumulated in the lower portion. Also in this case, the rotation drive shaft 2
Numeral 2 is an eccentrically mounted position on the rotation ascending side, which is the upper side of the rotation center of the mixing drum 10, and is eccentrically attached to a position where the scooped sludge falls, and is attached to the scooping fin 15 on the rotation ascending side. It will be close.

The base 30 has an opening at the top, and a compost take-out mechanism 35 is provided below the opening. The compost take-out mechanism 35 is formed in an upper opening shape, and the compost can be dropped and stored in this opening, and a suitable amount of compost can be taken out from a compost take-out port 35a provided on the side surface of the compost take-out mechanism 35. I have.

Next, the operation of this embodiment will be described. In this embodiment, the operation is basically the same as that of the first embodiment. However, the operation differs from that of the first embodiment in the following points. That is, since the rotating blades 23 constituting the crushing and mixing mechanism 20 in this embodiment are formed to have a substantially large diameter, the rotating blades 23 are buried in the sludge accumulated in the mixing drum 10 and the rotary drive shaft The sludge can be directly crushed with the rotation of 22, and the crushing and mixing treatment can be performed more efficiently.

Further, the fermented contents that have been purified after the fermentation treatment can be taken out through the inlet / outlet opening 18. In this case, by rotating the mixing drum 10 in a direction opposite to the direction rotated during the bacteria mixing process, the fermented contents fall into the compost take-out mechanism 35 through the inlet / outlet opening 18. Inner peripheral wall portion 11 in mixing drum 10
Since a large number of scooping fins 15 are attached to b and the contents are closed, a large amount of falling to the compost take-out mechanism 35 during the reverse rotation is prevented. Alternatively, a certain amount of fermented contents can be stored in the compost take-out mechanism 35 and then taken out in an appropriate amount. The fermented content is used as a processed product in fertilizers of agricultural products, and can be left in the mixing drum 10 as a return material or mixed with sludge as described above.

Next, in a third embodiment of the present invention, FIG.
This will be described with reference to FIG. This embodiment has basically the same configuration as that of the above-described first embodiment.
The mixing drum 10 is rotatably supported on a rotating support device 31. Side plates 12 are provided on both side surfaces of the mixing drum 10.
The side plates 12, 12 are pressed against the side surface of the mixing drum 10 at a constant pressure by a pressing mechanism 13 provided on a support arm 21 and are supported non-rotatably. Further, similarly to the first embodiment, the mixing drum 10
A large number of scooping fins 15, 15 and a crushing and mixing mechanism 20
The sludge is scooped up with the rotation of the mixing drum 10 and falls into the crushing / mixing mechanism 20 to be finely crushed.

On the other hand, in the present embodiment, the ends of the scooping fins 15 and 15 are each formed in an upward hook shape so that the sludge is scooped up more efficiently and dropped into the crushing and mixing mechanism 20. It is. The rotary wings 23 constituting the crushing and mixing mechanism 20 are composed of a large number of cross wings,
These cross feathers are formed so as to be pivoted substantially perpendicularly to the rotation drive shaft 22. In addition, a large number of the cruciforms are superimposed in the axial direction in a substantially layered manner, and the radiating angles of the cruciforms of each layer are alternately shifted by 45 degrees.

A blower mechanism 40 is provided in the mixing drum 10, and the blower mechanism 40 includes a pair of support pipes 42, 42.
And a number of blower plates 41, 41. Each of the support pipes 42 is formed in the mixing drum 10 to be elongated in the longitudinal direction, has the same height as the rotation drive shaft 22 of the mixing and crushing mechanism, and has a lower rotation side of the mixing drum 10. And both ends are fixed to the side plates 12 and 12.

Each of the large number of blowers 41, 41 is formed of a substantially quarter-circle thin plate, and the support tubes 42, 42 penetrate at a position near the center of the circle.
The blower plates 41, 41 are fixed so as to be suspended. The blowers 41 have a length such that their arcs are buried in the sludge deposited on the lower part of the mixing drum 10 and do not come into contact with the scooping fins 15 when the mixing drum 10 rotates. The blowers 41, 41 are arranged in layers at equal intervals.

The one side plate 12 has an air supply port 16.
And an air vent 17. The air supply port 16 communicates with the one support pipe 42. In addition, in each of the blower plates 41, 41, a thin tube 44 for blower that extends uniformly radially from a position near the center of the circle,
A number 44 are provided. The thin tubes 44 are connected to the support tube 42, respectively. As described above, the air supply port 16, the one support pipe 42, and the thin tubes 44, 44 are in communication with each other, and the air taken in from the air supply port 16 passes through the one support pipe 42 and the thin tubes 44, 44. The air is supplied from the ends of the circular arcs of the blower plates 41 and 41 to uniformly supply air into the accumulated sludge.

On the other hand, the air vent 17 is
This is for discharging steam and odor inside to the outside, and is attached to the side plate 12 above the air supply port 16. The air supply port 16 is connected to the one of the support pipes 42 through the side plate 12 in a communicating manner, but may be connected to any one of the support pipes 42. May be communicated with. In this case, the thin tube 44,
44 is, of course, in communication with one or both of the shaft pipes 42 communicating with the air supply port 16.

The base 30 has an opening at the top thereof as in the second embodiment, and the compost take-out mechanism 3 is located below the opening.
5 are provided. The compost take-out mechanism 35 is formed in an upper opening shape, and the compost can be dropped and stored in this opening, and a suitable amount of compost can be taken out from a compost take-out port 35a provided on the side of the compost take-out mechanism 35. I have.

Next, the operation of this embodiment will be described. First, the outer peripheral wall 11 of the rotating mixing drum 10 is
The sludge to be treated is introduced from the inlet / outlet opening 18 provided at a. At this time, an appropriate amount of the thermophilic bacterium described above is added at the same time. The input amount is, for example, about 50 to the weight of the sludge to be input.
The thermophilic bacterium of 1/0 weight is injected. In this example, a thermophilic bacterium is used as a bacterium to be added. However, the bacterium is not limited to the thermophilic bacterium. You may throw in both. When using phototrophic bacteria, it is necessary to separately provide a light irradiation device. Instead of adding the thermophilic bacterium, a part of the fermented contents in which the thermophilic bacterium has been sufficiently cultured can be used as a return material and an approximately equal amount of the new sludge can be used. Further, a deodorant may be injected from the air supply port 16 in order to eliminate the odor of the sludge. As a deodorant, it is effective to collect in advance the steam generated in the fermentation treatment and inject it.

The inner peripheral wall 11b of the mixing drum 10 is provided with a large number of scooping fins 15 and 15 made of thin plate pieces, and the sludge is scooped upward by the rotation of the mixing drum 10. At this time, the mixing drum 10 is rotated at a low speed in a direction in which the end on the opening portion side of the inlet / outlet 18 moves upward so as to prevent the sludge from flowing back toward the inlet / outlet 18. Then, the scooped sludge falls on the rotating blades 23 rotating at a high speed and is finely crushed. Then, the sludge that has fallen further downward is continuously scooped up again by the scooping fins 15 again, falls again on the rotating blades 23, and is further finely pulverized.

The bacteria mentioned above are mixed with the sludge finely ground in this way. Then, while the rotation is stopped or rotated, the bacteria-mixed sludge is held in the mixing drum 10 and fermented. When air is mixed from the air supply port 16 by setting the inside of the mixing drum 10 to a negative pressure, the air is uniformly mixed into the bacteria-mixed sludge through the support tube 42 and the small tubes 44. As described above, air is mixed into the sludge, and the aerobicity in the mixing drum 10 is increased, thereby promoting fermentation. The mixing drum 10
Since the fermentation has already begun when is rotated, the promotion of fermentation by mixing air is not limited to the curing period in the above-mentioned stationary state, and it is preferable that the inside of the mixing drum 10 is always kept at a negative pressure. . The steam and odor generated in the fermentation treatment are discharged to the outside using the air vent 17 as described above, and the discharged steam and the like are supplied again from the air supply port 16 as necessary.

After standing still for a predetermined period of time, the mixing drum 1 is again used to uniformly mix the bacteria with the sludge.
0 is rotated in a certain direction, and the mixing process is repeated. Also,
Bacteria may be further added to further promote fermentation.
The degree of acceleration of fermentation, the fermentation temperature, and the like are adjusted by adjusting the amount of the bacteria and the amount of air to be mixed. Purification is promoted as the fermentation temperature increases. The bacteria-mixed sludge is purified through a curing period of about two days while repeating the above series of processes several times.

The fermented contents which have been purified after the fermentation treatment can be taken out through the inlet / outlet opening 18. In this case, by rotating the mixing drum 10 in a direction opposite to the direction rotated during the bacteria mixing process, the fermented contents fall into the compost take-out mechanism 35 through the inlet / outlet opening 18. Since a large number of scooping fins 15 are attached to the inner peripheral wall portion 11b in the mixing drum 10 to block the contents, a large amount of the compost take-out mechanism 3 is rotated during the reverse rotation.
5 is prevented. In addition, compost removal mechanism 3
5, a certain amount of fermented contents can be stored and then taken out in an appropriate amount. The fermented contents are used as fertilizers for agricultural products as processed products, and can also be left in the mixing drum 10 as a return material as described above or mixed with sludge.

[0052]

As described above, according to the present invention, a sludge inlet / outlet is provided on the outer periphery of a rotatably supported mixing drum provided with a pulverizing / mixing mechanism, and a large number of scooping fins are provided on the inner periphery thereof. Since the fermentation treatment is performed after a predetermined time has elapsed after the bacteria mixing treatment by rotating the mixing drum in a certain direction, the sludge can be purified with a simple device, and the purification treatment time is greatly reduced. There is an effect that can be.

Since the projecting sludge inlet / outlet opening is formed on the outer peripheral wall side of the rotatably supported mixing drum cylinder, the mixing drum is rotated in a certain direction to eliminate the backflow of sludge. By rotating the mixing drum in a direction opposite to the rotation during mixing, there is an effect that the bacteria-mixed sludge or the fermented contents can be taken out from the inlet / outlet opening. Further, since a large number of scooping fins are provided on the inner peripheral wall portion in the mixing drum and the contents are closed, it is possible to prevent a large amount from being discharged at the time of the reverse rotation and to take out an appropriate amount. There is.

Since the crushing / mixing mechanism is provided by rotating the rotating wings composed of the large number of wavy wings at a high speed, the sludge introduced can be crushed uniformly and the bacteria can be uniformly mixed. There is an effect that a complete purification treatment can be achieved, and a higher quality fertilizer can be obtained as a treated product. In addition, the rotary drive shaft to which the rotating blades are attached is eccentrically attached to a position where the scooped sludge falls at a rotation ascending position which is an upper side of the rotation center of the mixing drum. Therefore, the pulverizing / mixing mechanism is located near the rotation-up side of the inner peripheral wall of the mixing drum, and the sludge scooped up by the scooping fins can be efficiently dropped into the pulverizing / mixing mechanism without leaking.

An air supply port is provided in the side plate so that air can be mixed into the mixing drum, and an air vent is provided in the side plate so that air can be discharged from the mixing drum. While supplying oxygen to the sludge mixed with the bacteria and aerobically to promote fermentation,
There is an effect that generated steam and odor can be discharged to the outside through the air vent. Further, a pipe for guiding the steam discharged from the air vent to the outside or water condensed with the steam to the air supply port again is provided, and a condenser for condensing the steam is provided in the middle of the pipe. Since it is provided, there is an effect that an odor generated during sludge fermentation in the mixing drum can be effectively deodorized.

An air blowing mechanism comprising a large number of air blowing plates and a pair of shaft pipes is provided in the mixing drum, and the air blowing plates are formed in a layered manner at equal intervals, and connected to one of the shaft pipes therein. Since a large number of combined thin tubes are provided, there is an effect that the fermentation can be efficiently promoted by uniformly supplying oxygen to the sludge deposited in the mixing drum. Further, there is an effect that the steam and the odor in the mixing drum can be uniformly discharged to the outside through the other spindle tube.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a first embodiment of the present invention as viewed from a direction of an outer peripheral wall portion.

FIG. 2 is a longitudinal sectional view of the first embodiment of the present invention as viewed from a side plate.

FIG. 3 is a side view of the first embodiment of the present invention as viewed from a side plate.

FIG. 4 is a longitudinal sectional view of a second embodiment of the present invention as viewed from a side plate.

FIG. 5 is a perspective view of a third embodiment of the present invention.

FIG. 6 is a longitudinal sectional view of a third embodiment of the present invention as viewed from a side plate.

[Explanation of symbols]

 Reference Signs List 10 mixing drum 11a outer peripheral wall 11b inner peripheral wall 12 side plate 13 pressing mechanism 14 packing material 15 scooping fin 16 air supply port 17 air vent 18 inlet / outlet opening 19a inlet / outlet valve 19b check valve 20 pulverizing / mixing mechanism 21 support arm 22 Rotary drive shaft 23 Rotary wing 24 Drive device 25 Flywheel 30 Base 31 Rotation support device 32 Drive roller 33 Roller drive device 34 Roller rotation shaft 35 Compost take-out mechanism 35a Outlet 40 Blow mechanism 41 Blow plate 42 Support tube 44 Narrow tube 50 Piping 51 Condenser

Claims (10)

[Claims] 1. A cylindrical mixing drum for mixing sludge into sludge by pouring sludge therein is rotatably supported by a rotary support device, and a side plate is brought into surface contact with both side surfaces of the mixing drum. The side plate is supported non-rotatably on the side surface of the mixing drum by a support mechanism, and an inlet / outlet opening is provided on the outer peripheral wall side of the cylinder of the mixing drum so that sludge can be taken in or taken out, A scooping fin is provided on the inner peripheral wall portion of the mixing drum so that the sludge can be scooped up by the rotation of the mixing drum, and the mixing drum uniformly crushes the input sludge and the bacteria. It is equipped with a pulverizing and mixing mechanism to promote uniform fermentation by mixing uniformly, and this pulverizing and mixing mechanism includes a rotary drive shaft rotatably supported via a side plate, and a rotary drive shaft. Mounted The rotating blades and the driving device for rotating the rotary drive shaft are constituted, and the sludge scooped up by the scooping fins is finely pulverized by the rotating blades to mix bacteria. Bacteria mixed purification device. 2. The mixing drum is rotated in a direction in which the opening portion of the inlet / outlet moves upward to mix bacteria with sludge, and the content mixed or mixed with bacteria in the mixing drum is subjected to fermentation. 2. The apparatus for purifying and mixing bacteria according to claim 1, wherein the mixing drum is rotated in a direction opposite to the rotation at the time of mixing so that a suitable amount can be taken out from the inlet / outlet to the outside. 3. A rotary drive shaft to which the rotary blades are attached is mounted eccentrically at a rotational upside position which is an upper side of the rotation center of the mixing drum and at a position where the scooped sludge falls. 3. The apparatus for purifying and mixing bacteria according to claim 1, wherein: 4. An air supply port is provided on said side plate to allow air to be freely mixed into said mixing drum, and said side plate is provided with an air vent to allow said bacteria-mixed sludge to enter the mixing drum. The apparatus for purifying bacteria mixed with bacteria according to claim 1, wherein steam and odor generated during the fermentation treatment can be discharged to the outside through the air vent. 5. A pipe for providing an air supply port and an air vent on the side plate, and for guiding steam discharged from the air vent to the outside or water condensed to the steam to the air supply port again. The apparatus for purifying and mixing bacteria according to any one of claims 1 to 3, further comprising a condenser for condensing the vapor in the middle of the pipe. 6. A blower mechanism is provided in the mixing drum, and the blower mechanism is composed of a number of blower plates and a pair of support tubes for supporting the blower plates. The mouth is connected in a communicating manner with the side plate interposed therebetween, and inside the blower plate, a number of small tubes connected to the supporting tube are formed, and the air supply port, the supporting tube and the small tube are formed. The bacteria mixing and purifying apparatus according to claim 4, wherein air can be freely blown into the mixing drum through the passage. 7. A peripheral wall of the mixing drum is formed by a double wall of an outer peripheral wall and an inner peripheral wall, and a heating pipe for circulating hot water is provided between the double walls. The apparatus for purifying and mixing bacteria according to any one of claims 1 to 6, wherein: 8. A cylindrical mixing drum for throwing sludge into pulverized and mixed bacteria is rotatably supported by a rotary support device, and side plates are attached to both side surfaces of the mixing drum in a face contact manner. The side plate is non-rotatably supported on the side surface of the mixing drum by a support mechanism, an inlet / outlet opening is provided on the outer peripheral wall side of the mixing drum cylinder, and a scooping fin is provided on the inner peripheral wall thereof. A crushing / mixing mechanism is provided on the drum, and the crushing / mixing mechanism is rotatably supported via a side plate, a rotary drive shaft, a rotary wing attached to the rotary drive shaft, and a drive for rotating the rotary drive shaft. Sludge is taken into the mixing drum from the inlet / outlet opening, and the mixing drum is rotated for a predetermined time in a direction in which the opening portion of the inlet / outlet opening moves upward to mix the sludge with the bacterium for treatment. , The mixed bacterial soil treated The fermentation treatment is performed by keeping the mud stationary for a predetermined time and then fermenting the fermented contents by rotating the mixing drum in a direction opposite to the rotation during the mixing from the inlet / outlet opening. A method for purifying and mixing bacteria, which is taken out in an appropriate amount to the outside. 9. After the fermentation treatment is performed while maintaining the stationary state for a predetermined time, the bacteria mixing processing is performed again by rotating the mixing drum, and then the fermentation processing is repeated while maintaining the stationary state for a predetermined time. The method for purifying and mixing bacteria according to claim 8. 10. A cylindrical mixing drum for throwing sludge and crushing and mixing bacteria is rotatably supported by a rotary support device, and side plates are attached to both side surfaces of the mixing drum in a face contact manner. The side plate is non-rotatably supported on the side surface of the mixing drum by a support mechanism, an inlet / outlet opening is provided on the outer peripheral wall side of the mixing drum cylinder, and a scooping fin is provided on the inner peripheral wall thereof. A crushing / mixing mechanism is provided on the drum, and the crushing / mixing mechanism is rotatably supported via a side plate, a rotary drive shaft, a rotary wing attached to the rotary drive shaft, and a drive for rotating the rotary drive shaft. Sludge is taken into the mixing drum from the inlet / outlet opening, and the mixing drum is rotated for a predetermined time in a direction in which the opening portion of the inlet / outlet opening moves upward to mix the sludge with the bacterium for treatment. , And a bacterium mixed and treated as described above The mixed sludge is subjected to fermentation processing while rotating the mixing drum, and then the fermentation-processed contents subjected to the fermentation processing by rotating the mixing drum in a direction opposite to the rotation during the mixing from the inlet / outlet opening. A method for purifying and mixing bacteria, which is taken out in an appropriate amount to the outside.