JPH11128996A - Bacteria mixer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To purify sludge composed of wastes formed of animal waste, garbage and the like, compost them and utilize them effectively and carry out mixing efficiently, continuously and quickly. SOLUTION: A mixing drum 10 into which sludge is introduced is supported rotatably by a rotation supporting device 31, and side face plates 12 set on both side faces are pressed by a press mechanism 13 and supported in the non- rotating state, and a sludge introduction opening 18a is provided on one side face plate, while a sludge discharge opening 18b for sludge mixed with bacteria is provided on the other side face plate. Sludge can be scooped upward freely by scooping fins 15 set downward slope shape formed all from the drum take-in side through the take-out side to move sludge successively by utilizing a slope, and a crushing and mixing mechanism 20 provided on the drum is constituted of a rotating shaft 22, a rotating blade 23 and a driving device 24, and the sludge scooped by the scooping fins is crushed by the rotating blade 23 to mix bacteria freely, and sludge mixed with bacteria can be discharged automatically.

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). ) Is fermented by the action of bacteria to perform a purification treatment.

[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 continuous and rapid operations have not been proposed yet, and have not been put to practical use. 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 bacteria mixing apparatus capable of efficiently and continuously performing 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.
One side plate is provided with an inlet for sludge, the other side plate is provided with an outlet for sludge mixed with bacteria, and a scooping fin is provided on the inner peripheral wall of the mixing drum. The rotation of the mixing drum makes it possible to scoop up the sludge upward, and the mixing drum crushes the input sludge uniformly and mixes it with the bacteria uniformly to promote a uniform fermentation mechanism. With
The pulverizing / mixing mechanism includes a rotary drive shaft rotatably supported via a side plate, a rotary wing mounted on the rotary drive shaft, and a drive device for rotating the rotary drive shaft. The sludge scooped up by the raising fins is finely pulverized by the rotating blades so that bacteria can be freely mixed.

According to a second aspect of the present invention, in order to achieve the above object, a plurality of scooping fins provided on the inner peripheral wall of the mixing drum scoop up sludge in the first aspect of the invention. At the same time, the scooping fins are attached in a state of being inclined downward from the inlet side to the outlet side in a state where the scooping fins are at the rotational up side position. It is configured to move to the outlet side, and to discharge the bacteria-mixed sludge to the outside from the outlet.

According to a third aspect of the present invention, in order to achieve the above object, in the first or the second aspect of the present invention, the rotary drive shaft to which the rotary blade is attached is located on the upper side of the rotation center of the mixing drum. It is configured to be eccentrically attached to a position where the scooped sludge is dropped at a rotation ascending side position.

[0012]

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 as viewed from the direction of the outer peripheral wall, FIG. 5 is a longitudinal sectional view of the third embodiment of the present invention as viewed from the direction of the outer peripheral wall, and FIG. FIG. 7 is a longitudinal sectional view of the fourth embodiment of the present invention as viewed from the side plate, FIG. 7 is a longitudinal sectional view of the fifth embodiment of the present invention as viewed from the side plate, and FIGS. 1 shows an overall view of a sludge treatment system to which is applied.

First, a first embodiment shown in FIGS. 1 to 3 will be described as a bacteria mixing apparatus of the present invention. That is, the first embodiment of the present invention basically uses the mixing drum 10 as the base 3
The mixing drum 10 is rotatably supported on a rotation support device 31 via a rotation support device 31. The mixing drum 10 is formed in a cylindrical shape having a diameter of about 2 m, and is rotated at a low speed by the 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 a support arm 21,
In addition to being supported by the supporting arm 21, the pressing mechanism 13, 13 provided on the supporting arm 21, 21 as a supporting mechanism, is constantly pressed against the side surface of the mixing drum 10 at a constant pressure and is supported in a non-rotating manner. The support arms 21, 21
Are erected on the outside of both sides of the mixing drum 10 in a gate shape. The support mechanism is not limited to the pressing mechanisms 13, 13, and may be supported by another method such as suctioning the side plates 12, 12 from the inside of the mixing drum 10.

A packing material 14 is interposed between the side plate 12 and the side surface of the mixing drum 10, and an inlet 18a for introducing sludge into the mixing drum 10 protrudes from one of the side plates 12. The other side plate 12 is provided with a protruding outlet 18 b for taking out the sludge mixed with the bacteria from the mixing drum 10. The peripheral wall of the cylinder of the mixing drum 10 is the outer peripheral wall 1.
1a and the inner peripheral wall portion 11b are formed by a double wall,
It has good heat insulation and heat retention inside. Passing a piping for raising the temperature to circulate hot water between the double walls,
Further, the heat insulating property and the heat retaining property may be further improved by packing the 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. Although the mixing drum 10 is formed in a cylindrical shape, it may be formed in a polygonal cylinder such as a hexagon or an octagon.

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. 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. Further, the scooping fins 15 are formed so as to be inclined downward from the inlet 18a side to the outlet 18b side when in the state of the rotation ascending side. It moves to the outlet 18b side by utilizing. Then, the bacteria-mixed sludge (mixing drum 10
The sludge in which the bacteria are mixed is referred to as bacteria-mixed sludge. The same applies hereinafter) can be automatically discharged from the outlet 18b to the outside.

A supply port 16 for taking in air or thermophilic bacteria is provided above the side plate 12 on the side of the intake port 18a. An air vent 17 for discharging the air in the mixing drum 10 to the outside is provided in the upper part of the side plate 12 on the side of the outlet 18b. Using the air vent 17, the mixing drum 1
The steam or odor filled in 0 is discharged to the outside or sucked from the outside. An intake valve 19 is provided at the inlet 18a of the side plate 12 so that sludge and air are not discharged from the inlet 18a to the outside, while air is supplied from the outside into the mixing drum 10. It is possible to take in. 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. Further, a pipe for guiding the steam discharged to the outside from the air vent 17 or the water condensed with the steam to the supply port 16 again, and a condenser for condensing the steam in the middle of the pipe are provided. In this case, the generated steam can be circulated again in the mixing drum 10 to eliminate the odor generated in the mixing drum 10, which is a preferable embodiment.

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 rotary wings 23 are composed of a large number of corrugated wings, and these corrugated wings are pivotally mounted substantially perpendicularly to the rotary 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 attached to the outside of 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 up 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 the present invention will be described. First, sludge to be treated is put into the rotating mixing drum 10 from an inlet 18a provided in the side plate 12 thereof. At this time, an appropriate amount of the thermophilic bacterium described above is added at the same time. As an input amount, for example, a thermophilic bacterium having a weight of about 1/500 with respect to the weight of the sludge to be input is input. In this example, thermophilic bacteria are used as the bacteria to be injected. However, the thermophilic bacteria are not limited to the thermophilic bacteria, and the phototrophic bacteria can be injected, or both thermophilic bacteria and phototrophic bacteria can be used. May be input. 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 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 a thin plate. Sludge is scooped upward by the rotation of the mixing drum 10. 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 scooping fins 15 are connected to the outlet 1a from the inlet 18a side.
8b, the sludge is scooped upward by the rotation of the mixing drum 10, and the sludge is sequentially rotated by using the slant to rotate the mixing drum 10 from the inlet 18a to the outlet 18b. Move sideways. For this reason, the rotation direction of the mixing drum 10 needs to be a fixed direction.

The above-mentioned bacteria are mixed with the sludge finely pulverized in this way, and discharged to the outside through the outlet 18b.
The bacteria-mixed sludge is stored in a fermentation unit tank 6 described later and purified after a curing period of about two days. 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 also be taken into the mixing drum 10 and mixed with sludge. The above-mentioned sludge, germs, reclaimed material and the like to be charged may be mixed after all necessary amounts have been charged, or may be all removed, or may be continuously charged little by little and removed little by little.

Next, in a second embodiment of the present invention, FIG.
This will be described with reference to FIG. In this embodiment, the base 3
A tilt adjustment mechanism 40 is attached to the zero. That is, as shown in FIG. 4, the tilt adjusting mechanism 40 allows the base 30 to be movable up and down so that the height of the base 30 on the sludge outlet 18b side can be lowered to a position lower than the inlet 18a side. The base 30 is inclined so that the sludge mixed with bacteria can be discharged smoothly. Further, the inclination adjusting mechanism 40 may be attached to the outlet 18b side of the mixing drum 10, and in this case, the height of the mixing drum 10 itself is set to the inlet 18a.
The mixing drum 10 is tilted by lowering it to a position lower than the side so that the bacteria-mixed sludge can be taken out smoothly. Further, the tilt adjusting mechanism 40 may be attached to the inlet 18a side of the base 30 or the inlet 18a side of the mixing drum 10, and in this case, the tilt adjusting mechanism 40 may be attached to the inlet 18a of the base 30 or the mixing drum 10. The height of the side is raised to a position higher than the side of the outlet 18b so that the bacteria-mixed sludge can be smoothly taken out.

Next, in a third embodiment of the present invention, FIG.
This will be described with reference to FIG. In the present embodiment, a plurality of bacterial mixing devices 3, 3 are connected in a row in the longitudinal direction in a downward step, and the outlets 18b, 18b of the bacterial mixing devices 3, 3 are respectively connected to the bacterial mixing devices of the next stage. The mixed sludge in each mixing drum 10 is automatically transferred to the mixing drum 10 of the next stage so as to repeat the bacterial mixing process in order to be located above the openings of the third and third intakes 18a, 18a. To ensure that the bacteria are mixed.

Next, in a fourth embodiment of the present invention, FIG.
This will be described with reference to FIG. In this embodiment, the rotary blades 23 constituting the crushing and mixing mechanism 20 are formed to have a substantially large diameter,
Below the rotary drive shaft 22 to which the rotary wings 23 are attached, the lower half of the rotary wings 23 is buried in the sludge deposited in the lower portion of the mixing drum 10. The rotary wings 23 are directly crushed. Also in this case, the rotary drive shaft 22 is eccentrically attached to a position where the scooped sludge falls, which is a position where the scooped sludge falls, which is an upper position on the rotation center side of the rotation center of the mixing drum 10. Scooping fins 15 on the upside
Will be approached.

Next, in a fifth embodiment of the present invention, FIG.
This will be described with reference to FIG. In the present embodiment, the rotary blades 23 constituting the crushing and mixing mechanism 20 are formed of a large number of cross blades, and these cross blades are pivotally mounted 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.

According to the present invention, the above-described series of sludge treatment can be continuously and automatically performed. Therefore, the present invention is installed by installing the sludge receiving device 2 and the fermentation unit tank 6 together with other devices. A large-scale sludge treatment system applied to a part enables large-scale treatment. Hereinafter, an outline of the sludge treatment system and treatment method will be described with reference to FIGS. 8 and 9. The treatment system includes a sludge treatment facility A including a unit stop B for treating sludge and a carry-in / out entrance C where the truck 1 enters. The sludge treatment facility A is constructed in a building (not shown), and the odor of the sludge treatment facility A is prevented from leaking to the outside by a deodorizing facility D provided in the building.

The sludge carried to the loading / unloading entrance C is introduced into the sludge receiving device 2 and is transferred to the mixer 3 where the return material is mixed and mixed. The sludge is sequentially transferred to the bacteria mixing device 4, where the thermophilic bacteria are mixed.

Next, the bacteria-mixed sludge is transferred to the fermentation unit tank 6 of the unit stop B via the belt conveyor shown in FIG. 8 or the transfer device 5a shown in FIG. The fermentation unit tank 6 is stopped at the unit stop B for a predetermined number of days during the curing period, during which sludge is fermented by the action of the thermophilic bacteria. In this case, the unit stop B is provided by the mobile trolley 5b shown in FIG.
May be transferred to Each fermentation unit tank 6 after the curing period is transferred to a take-out device 7,
The fermented contents, which are the contents, are transferred to the classification device 8. After the fermented contents are classified into return materials and processed products by the classifying device 8, the processed products are transferred to the processed product carrying-out device 9 and used as fertilizers for agricultural crops. On the other hand, the returned material is transferred to the mixer 3 and mixed with the newly introduced sludge. Thereafter, similar operations are continuously performed.

[0032]

As described above, according to the present invention, side plates are attached to both sides of a rotatable mixing drum provided with a pulverizing and mixing mechanism inside, and an inlet is provided in one of the side plates. Along with providing an outlet on the other side plate, a number of scooping fins are provided on the inner periphery of the mixing drum, and the mixing drum is rotated to perform the bacteria mixing process,
The sludge taken into the mixing drum from the inlet can be mixed with bacteria while being automatically pulverized, and the bacteria can be sequentially discharged from the outlet, thereby enabling rapid and continuous sludge purification treatment. There is.

Since the scooping fins are formed so as to be inclined downward from the inlet to the outlet, the scooping fins scoop up the sludge by the rotation of the mixing drum and automatically fall to the crushing and mixing mechanism. This has the effect that the sludge that has been subjected to the bacteria-mixing treatment can be automatically and sequentially discharged from the outlet while being gradually moved in the outlet direction while being pulverized many times. In addition, since a crushing and mixing mechanism is provided by rotating the rotating wings composed of a large number of wavy wings at a high speed, it is possible to uniformly crush the input sludge and uniformly mix the bacteria, and to achieve uniform fermentation and complete Purification process,
There is an effect that a higher quality fertilizer can be obtained as a processed product. Further, since the rotary drive shaft to which the rotating blades are mounted is eccentrically mounted on the rotation-up side, which is the upper side of the rotation center of the mixing drum, the grinding and mixing mechanism rotates the inner peripheral wall of the mixing drum. As a result, the sludge that has been scooped up by the scooping fins can be efficiently dropped into the pulverizing and mixing mechanism without leaking.

Since the sludge can be continuously and automatically purified as described above, it can be processed in a large scale as a large-scale sludge treatment system by being installed together with a sludge receiving device and a fermentation unit tank. Becomes

[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 seen from the outer peripheral wall direction.

FIG. 5 is a longitudinal sectional view of a third embodiment of the present invention as viewed from a direction of an outer peripheral wall portion.

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

FIG. 7 is a longitudinal sectional view of a fifth embodiment of the present invention as viewed from a side plate.

FIG. 8 is an overall view of a sludge treatment system to which the bacteria mixing device of the present invention is applied.

FIG. 9 is an overall view of a sludge treatment system to which the bacteria mixing device of the present invention is applied.

[Explanation of symbols]

 A Sludge treatment facility B Unit stop C Loading and unloading entrance D Deodorizing equipment 1 Truck 2 Sludge receiving device 3 Mixer 4 Bacteria mixing device 6 Fermentation unit tank 7 Extraction device 8 Classification device 9 Treated product unloading device 10 Mixing drum 11a Outer wall 11b Inner peripheral wall 12 Side plate 13 Pressing mechanism 14 Packing material 15 Scooping fin 16 Supply port 17 Air vent 18a Inlet 18b Outlet 19 Intake valve 20 Crushing and mixing mechanism 21 Support arm 22 Rotary drive shaft 23 Rotary wing 24 Drive device Reference Signs List 25 flywheel 30 base 31 rotation support device 32 drive roller 33 roller drive device 34 roller rotation shaft 40 adjustment mechanism

Claims (3)

[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 of the mixing drum by a support mechanism, and one side plate is provided with an inlet for sludge, and the other side plate is provided with a fungus-mixed sludge. A scooping fin is provided on the inner peripheral wall portion of the mixing drum so that sludge can be scooped upward by the rotation of the mixing drum. A crushing and mixing mechanism for promoting uniform fermentation by crushing into a uniform mixture with the above bacteria, and the crushing and mixing mechanism is a rotary drive shaft rotatably supported via a side plate. And this rotary drive shaft It is composed of a mounted rotary wing and a driving device for rotating the rotary drive shaft, and the sludge scooped up by the scooping fin is finely pulverized by the rotary wing so that bacteria can be mixed freely. Characteristic bacteria mixing device. 2. A large number of scooping fins provided on an inner peripheral wall portion of the mixing drum scoop up sludge and, when the scooping fins are at a rotation ascending position, from an inlet side to an outlet side. The sludge is used to move from the inlet side to the outlet side while rotating sequentially using this slope, and the bacteria-mixed sludge can be discharged to the outside from the outlet. The bacteria mixing device according to claim 1, wherein: 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. The bacteria mixing device according to claim 1 or 2, wherein