JPH1177003A - Garbage decomposition treatment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a garbage decomposition treatment device in which aeration holes of bubbler diffusers are not blocked even in liquid of high concentration and further bubbles generated in the inside of a decomposition tank are not discharged to the outside of a machine and furthermore concentrated treatment water discharged from the decomposition tank is surely separated and capacity of treatment is enhanced. SOLUTION: An upper and a lower bubble-generating face plates are formed into a nearly truncated cone shape and bubble-generating vibration faces are bent and provided on the outer peripheral edge parts. Bubbler diffusers 1 are formed by inserting the upper and lower bubble-generating face plates into bubbler core pipes and piling them up and down. The bubbler diffusers 1 are provided in the inside of the base of a decomposition tank 2. A defoaming steam separator 18 is provided with a rotary blade plate, which has a small gap apart from the ceiling cover of the decomposition tank 2 and is rotated, and with an exhaust outlet. A condensation separator cyclone 32 is arranged in a condensation treatment feeding line between the decomposition tank 2 and an evaporation tank 45. In the condensation separation cyclone 32, both a takeout cylinder of separated water and a riser of small specific gravity water inserted into the inside thereof are provided in the inside of the upper half part of a cylindrical barrel. A takeout pipe of small specific gravity water and a takeout pipe of great-specific gravity water are provided in the upper and lower end parts of the cylindrical barrel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing device for decomposing garbage.

[0002]

2. Description of the Related Art Conventionally, a bubbler made of a porous material is installed inside the bottom of a decomposition tank filled with water, compressed air from an air blower is supplied to the bubbler, and aerobic is generated by a large amount of aeration generated from the bubbler. There is known a configuration in which a defoaming liquefaction tank for promoting the activity of microorganisms to decompose garbage in water and simultaneously processing a large amount of generated foam is provided on the upper half side surface of the decomposition tank. (For example, 30238
(Refer to Registered Utility Model No. 82)

[0003]

However, most of the bubblers used in the conventional decomposition tank are so-called diffuser tubes, and are made of a porous material.
If the sludge has a low concentration, the purpose can be sufficiently achieved without any problem, but in the case of garbage disposal, the MLSS is 50,000-60,000pp.
m, and the sludge flows back into the air diffuser pipe to close the bubble generation holes in a short period of time. A foaming phenomenon occurs, and the decomposition tank is filled with foam, and these foams are discharged to the exhaust pipe and eventually reach the deodorizer, and there is a problem that the deodorizing ability is reduced in a very short time,
Further, when the concentrated water decomposed in the decomposition tank is directly sent to the evaporative solidification tank, it takes a considerable amount of time to dry and solidify. In view of these, the present invention does not block the bubble generation holes even in a bubbler in a high concentration decomposition tank,
In addition, the defoaming gas-water separator can achieve the steam-water separation process without discharging a large amount of generated bubbles to the outside of the tank.Furthermore, the concentrated water decomposed in the decomposition tank is not sent directly to the evaporative solidification tank. It is an object of the present invention to provide a garbage decomposing / treating apparatus capable of efficiently decomposing and solidifying garbage by providing a concentrated separation cyclone for separating the concentration of concentrated treatment water.

[0004]

Means for Solving the Problems The upper side of the same shape but different in size, in which a circular outer peripheral edge on the large diameter side is bent inwardly in a vertical cross-section to be bent inward to form a bubble generating vibration surface, is formed into a substantially truncated conical shape. A bubbler diffuser formed by vertically stacking a bubbler core tube with a core tube vent hole for sending compressed air through the center of the bubble generation surface and the lower bubble generation surface is provided inside the bottom of the decomposition tank, A defoaming air / water separator provided with a rotating blade plate that rotates with a small gap with the inner surface of the ceiling lid and an exhaust outlet that discharges exhaust gas that has passed through the rotating blade plate is provided on the ceiling lid portion. A separation water take-out cylinder and a low specific gravity water riser pipe inserted vertically into the separation water take-out cylinder are provided inside the upper half, and a low specific gravity take-out pipe and a heavy gravity take-out pipe are provided at the upper and lower ends of the cylinder body. The concentrated separation cyclone is provided with concentrated water in the decomposition tank and evaporation solidification tank. It is placed in the supply line.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the drawings. FIG. 1 shows an embodiment of a series of garbage decomposition treatment apparatuses in which a bubbler diffuser, a defoaming air-water separator, and a concentration separation cyclone of the present invention are arranged at respective portions, and these will be described in detail below.

1 to 3, a bubbler diffuser 1 is disposed inside a bottom surface 3 of a decomposition tank 2,
The air blower 4 provided at a position outside of the air pipe 4 communicates with a ventilation pipe 5 for mounting. Further, the bubbler diffuser 1 has an upper and lower portion formed into a hollow substantially frustoconical shape having a C-shaped vertical section centered on a bubbler core tube 7 in which one end of the covered inner cylindrical tube on the open side is screwed 6 into the ventilation tube 5. The bubble generating face plates 8 and 9 on the side are mounted in a state of being stacked vertically at a fixed interval via a spacer 10. More specifically, the upper and lower bubble generating face plates 8 and 9 are made of, for example, a stainless steel plate having a thickness of 0.5 mm, and have a virtual horizontal line S at the top of a hollow truncated cone and the slope 11 of the upper bubble generating face plate 8. Is about 34
And the center part is attached to the bubbler core tube 7 and the slope 11
The outer peripheral edge of the large-diameter side is further lowered to the bubble generating face plate 9.
The bubble generating vibrating surface 12 is formed by bending inward in a rectangular shape in cross section toward the side, and the tip of the bubble generating vibrating surface 12 is attached so as to be in contact with the slope 13 of the lower bubble generating surface plate 9. Similarly, the circular outer peripheral edge on the large diameter side of the slope 13 is bent inward in a V-shaped cross section to form the bubble generating vibration surface 14.

In the test machine of the present invention, good results could be obtained if the elevation angle β of the tip of the bubble generating vibrating surface 12 with respect to the virtual horizontal line N was about 60 °. In this case, the diameter of the slope 11 at the maximum position was 94 mm, the diameter of the tip of the bubble generating vibration surface 12 was 114 mm, and the thickness of the spacer 10, that is, the distance between the slopes 11 and 13 was 9 mm. Further, the diameters of the lower slope 13 and the bubble generation vibration surface 14 were formed to be 118 mm and 138 mm, respectively.

The bottom cover 15 is made of a stainless steel plate having a thickness of 0.5 mm and is formed into a hollow truncated cone having a vertical cross section of a letter C, and a spacer 16 having the same shape and size as the spacer 10 is provided on the slope 1.
3 and attached to the bubbler core tube 7 in parallel with the slope 13 by intervening on the lower surface of the core 3. More specifically, the diameter of the bottom cover 15 is formed to be larger than the diameter of the bubble generation vibration surface 14, and the bottom cover 15 is attached such that the front end of the bubble generation vibration surface 14 is in contact with the upper surface of the bottom cover 15. The core tube ventilation hole 17 is formed so as to penetrate from the inner peripheral surface to the outer peripheral surface of the bubbler core tube 7. More specifically, the spacers 10 and 16 are not provided but are provided at other positions so that air can be blown from the inner peripheral surface to the outer peripheral surface.

Next, the defoaming steam-water separator constituting the present invention will be described in detail. 4 and 5, the defoaming water separator 18 is provided at the corner of the ceiling lid 19 of the decomposition tank 2. The separation chamber 20 of the defoaming steam-water separator 18 is formed at the corner of the ceiling lid 19 in, for example, a closed cylindrical shape, and the exhaust outlet 21
Drilling. The drive shaft 22 is supported by bearings in the separation chamber 20 so as to rotate in the lateral direction. A drive motor 23 is mounted on one end of the separation chamber 20 and a rotating blade plate is mounted on one end of the disassembly tank. 24 is mounted so as to rotate in the lateral direction. More specifically, the rotating blade 24 is a rotating disk 2
Rotating blades 26 are vertically fixed in the shape of a strip in the direction perpendicular to the surface of the rotating disk 25 in a cross shape from the center of 5 toward the circumferential quadrant, and the upper end surface 27 of the rotating blade 26 is a ceiling lid. 1
9 so as to form a small gap 29 with the inner surface 28 so as to rotate in the lateral direction. In this case, the gap of the small gap 29 is preferably as small as 1 mm or less. The antifoaming projection 30 has a substantially triangular cross section on the inner surface 28 and protrudes in a circular shape about the drive shaft 22. The defoaming groove 31 is provided with the defoaming protrusion 3.
An upper end surface 27 of the rotary blade 26 at a position facing 0 is cut and recessed. More specifically, the anti-foaming projection 30 is inserted into the anti-foaming groove 31 and is not provided at a position where the rotary blade 26 can rotate.

Further, the concentrated separation cyclone constituting the present invention will be described in detail below. 1, 6, and 7, the concentration separation cyclone 32 is installed outside the decomposition tank 2. The cylinder body 33 of the concentration separation cyclone 32 is
The upper and lower ends of the cylindrical shape are formed in a pointed conical shape, and the bottom side of the conical shape is formed in a conical shape communicating with the cylindrical body 33, respectively.
On the inclined surface of the conical ceiling plate 34 formed on the upper end side, a low specific gravity take-out pipe 35 is provided which communicates in the lateral direction with one end communicating with the inside of the cylindrical body 33 and the other end communicating with the evaporation solidification tank described later. .
One end of the specific gravity take-out pipe 36 communicates with one end of a conical bottom surface 37 formed at the lower end of the cylinder body 33, and the other end communicates with the evaporative solidification tank and is provided in the lateral direction. Treated water introduction pipe 38
Is mounted at a height position that is approximately half of the total height of the cylinder body 33 so that one end of the cylinder body 33 communicates with the inside of the cylinder body 33, and the attachment position is approximately 90 ° with the low specific gravity extraction pipe 35. One end is inserted at a position on the outer peripheral surface of 33 and is attached in a direction parallel to the low specific gravity extraction pipe 35, and the other end is connected to a water pipe for supplying treated water from a decomposition tank via a pump described later. The separated water take-out cylinder 39 has an upper half formed in a cylindrical shape having a reduced diameter, and is vertically installed inside the upper half of the cylinder body 33. The tip of the small-diameter return pipe 40 on the upper end side is conical. Projecting from the tip of the shaped ceiling plate 34 and communicating with a return pipe to the decomposition tank 2 to be described later and connected thereto, the lower end side is bent into an L-shaped vertical cross section, and opened laterally to form a separated water intake 41, The separated water intake 41 is mounted laterally inside the cylinder 33 at a position above the height of the treated water introduction pipe 38. In this case, the separated water intake 41
Preferably, as shown in FIG. 7, the distal end opening is bent in the same direction as the flow rotation direction of the water flowing from the treated water introduction pipe 38.

The low-specific-gravity water rising pipe 42 is formed in a substantially cylindrical shape and is provided in the vertical direction in the separated water take-out cylinder 39, and the lower end portion is formed in a C-shape to form a low-specific-gravity water inlet 43. An outlet 44 is provided which protrudes downward from the separation water take-out cylinder 39, and is bent laterally at the upper end thereof, inserted into the upper half peripheral wall of the separation water take-out cylinder 39, and flows out of the separation water take-out cylinder 39. .

The evaporative solidification tank 45 has a strainer frame 46 stretched in the tank, a bubbler 47 formed of a porous material inside the bottom surface, and a heater 48 provided outside the bottom surface. One end of a pipe branched from the exhaust pipe 50 provided on the ceiling surface 49 side is connected to the deodorizer 51, and one end of the other pipe is connected to the bubbler diffuser 1 in the decomposition tank 2.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The number of stacked bubble generating face plates 8 and 9 on the upper side of the bubbler diffuser 1 is not necessarily limited to two layers above and below.
Four layers may be used.

[0014]

When the compressed air from the air blower 4 is sent toward the bubbler diffuser 1, the compressed air flows into the bubbler core pipe 7 from the ventilation pipe 5 and exits through the core pipe ventilation hole 17, so that the upper and lower bubbles are removed. The compressed air enters the generating face plates 8 and 9 and pushes up the bubble generating vibrating surfaces 12 and 14 at the tips to push the compressed air into the water, and the compressed air is compressed by the vibration when the air is ejected and the opening and closing vibration of the bubble generating vibrating surface. Rises with bubbles in the water. In this case, since the bubble generating vibration surface is formed so as to have a slightly smaller diameter than the upper side and is overlapped with each other, the bubbles generated from the bubble generating vibration surfaces having different diameters rise while forming cylindrical shapes having different diameters. Since the upper and lower bubble generating face plates 8 and 9 and the bubble generating vibrating faces 12 and 14 are both inclined, the MLSS is 5
Sludge with a high concentration of 0,000 to 60,000 ppm did not slip off and obstructed the bubble generation site.

Next, the operation of the defoaming gas-water separator 18 will be described. When the rotating blade 24 is rotated by the driving motor 23 via the driving shaft 22, a large amount of air is generated by the aeration air in the decomposition tank due to the bubbling phenomenon. The foam that has risen to the ceiling lid 19 tends to enter the rotating blades 24, but is scattered by the rotational centrifugal force of the rotating blades 26, and further mixed with the foamed foam to raise small suspended matter, thereby increasing the small gap 29. Even when the bubbles enter, the bubbles are caused to flow down into the rotating blades 26 by the bubble stopper projections 30 and bounce off by centrifugal force. The bubbles are confined in the decomposition tank and pass through the rotating rotating blades 26 to be separated into the separation chamber. Only gas exhaust can enter the interior 20, and the exhaust is exhausted from the exhaust outlet 21 to the deodorizer 51 side.

Next, the operation of the concentration separation cyclone 32 will be described. Concentrated treated water sent from the bottom of the decomposition tank 2 to the treated water introduction pipe 38 via the pump 52 flows from the treated water introduction pipe 38 to the cylinder. The water entering the body 33 and spirally flowing through the inside of the cylinder body 33, the lightest water having a specific gravity enters through the separated water intake 41 during rotation and rises in the separated water take-out cylinder 39 by the pressure of the pump 52. From the return pipe 40 at the upper end to the original decomposition tank 2
The treated water is returned to. Also, the treated water having a specific gravity slightly higher than the treated water and hard to rotate enters the low specific gravity water inlet 43, rises in the low specific gravity water riser 42, exits from the outlet 44, and reaches the ceiling of the cylinder body 33. Is discharged from the low-specific-gravity outlet pipe 35 and sent to the evaporative solidification tank 45 through a water pipe.
Furthermore, the concentrated water having the highest specific gravity among the concentrated treated water that has entered the concentration separation cyclone 32 sinks to the conical bottom surface 37 side, exits from the specific gravity extraction pipe 36, passes through the water pipe 54, and passes through the evaporative solidification tank. Feed to the 45 side.

The high-temperature exhaust gas branched from the exhaust pipe 50 is returned to the decomposition tank 2 through the ventilation pipe 55, generates high-temperature bubbles through a bubbler diffuser, and promotes heating and decomposition in the decomposition tank. . The amount of heat required for evaporative solidification is returned to the decomposition tank to measure heat recovery. Since this air has sufficient oxygen, it is used for microbial decomposition in a decomposition tank.

[0018]

As described above, the bubbler diffuser of the present invention does not block the aeration holes even when the concentration in the decomposition tank is high, and also removes a large amount of bubbles generated by the defoaming gas-water separator in the decomposition tank. And the concentrated treated water taken out from the bottom of the decomposition tank can be re-fractionated by concentration by the concentration separation cyclone, so that the efficiency of the solidification treatment in the evaporative solidification tank can be significantly increased.

[Brief description of the drawings]

FIG. 1 is a schematic view of an overall view of a garbage decomposition treatment apparatus of the present invention.

FIG. 2 is a longitudinal sectional view of a bubbler diffuser.

FIG. 3 is a plan view of a bubbler diffuser.

FIG. 4 is a vertical sectional view of the defoaming water separator.

FIG. 5 is a plan view of a rotating blade of the defoaming water separator.

FIG. 6 is a longitudinal sectional view of a concentration separation cyclone.

FIG. 7 is a plan view of a concentration separation cyclone.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bubbler diffuser 2 Decomposition tank 7 Bubbler core tube 8 Upper bubble generation surface plate 9 Lower bubble generation surface plate 11 Slope 12 Bubble generation vibration surface 13 Slope surface 14 Bubble generation vibration surface 15 Bottom lid 17 Core tube ventilation hole 18 Defoaming air / water Separator 19 Ceiling lid 20 Separation chamber 21 Exhaust outlet 24 Rotating blade plate 25 Rotating disk 26 Rotating blade 27 Upper end surface 28 Inner surface 29 Small gap 30 Bubble stop projection 32 Concentrated separation cyclone 33 Cylinder trunk 35 Low specific gravity take-out tube 36 Heavy specific take-out Pipe 38 Treated water introduction pipe 39 Separated water discharge pipe 42 Low specific gravity water riser pipe 45 Evaporation solidification tank 47 Bubbler 48 Heater 49 Ceiling surface 50 Exhaust pipe

Claims (3)

[Claims] 1. A bubble generating vibration surface which is formed in a substantially frusto-conical shape and has a large-diameter-side circular outer peripheral portion bent inward in a vertical cross-sectional shape to bend a bubble generating vibration surface and an upper bubble generating surface having the same shape but different sizes. A bubbler diffuser formed by inserting a central portion of the bubble generating surface of the side into a bubbler core tube having a core tube ventilation hole and vertically stacking through a spacer is provided inside the bottom surface of the decomposition tank. Garbage decomposition processing equipment. 2. A defoaming function having a rotating blade plate that rotates with a small gap between the inner surface of the ceiling lid and an exhaust outlet that discharges exhaust gas passing through the rotating blade plate, is provided on a ceiling lid portion of the decomposition tank. A garbage decomposer equipped with a steam separator. 3. An upper bubble generating surface having the same shape and different sizes, wherein a bubble generating vibration surface is bent by bending a circular outer peripheral portion of a large diameter side inwardly into a vertical cross section in a substantially truncated conical shape and bending the vibration generating surface. A bubbler diffuser formed by inserting the center of the bubble generation surface of the side into a bubbler core tube with a core tube ventilation hole and stacking vertically through a spacer is provided inside the bottom surface of the decomposition tank, and the ceiling lid of the decomposition tank A defoaming air / water separator provided with a rotating blade plate that rotates with a small gap with the inner surface of the ceiling lid and an exhaust outlet that discharges exhaust gas that has passed through the rotating blade plate,
A separating water take-out tube and a low-specific-gravity water riser pipe inserted vertically into the separated-water take-out tube are provided inside the upper half of the tube body, and a low-specific-gravity take-out tube and a heavy-gravity take-out tube are provided at the upper and lower ends of the tube body. A garbage decomposition treatment apparatus comprising a concentration separation cyclone provided with the above and arranged in a concentrated water supply line of a decomposition tank and an evaporative solidification tank.