JPH1176977A - Waste treating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waste treating device which produces effectively usable active carbon by safely and easily treating wastes such as sludge. SOLUTION: This device has a feeding section 2 for feeding the sludge M, a drying section 3 for drying the sludge M by hot air, a firing section 4 for further firing and carbonizing the dried sludge M, a deodorizing section 5 for deodorizing the high-temp. waste gases contg. the smell generated at the time of drying and firing and cooling the same, a hot air source 6 for delivering the high-temp. wind for drying, a driving source 7 for rotating a rotary drum in order to agitate the sludge M housed in this rotary drum and a heat source 8 for firing the dried sludge M. The device produces the active carbon C by drying the sludge M fed from the feeding section 2 and carbonizes the same in the firing section 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for treating waste such as sludge, and more particularly, to drying and carbonizing even high-moisture-content waste and high-viscosity waste to enable reuse as activated carbon. The present invention relates to a waste disposal device.

[0002]

2. Description of the Related Art In recent years, sludge discharged from septic tanks has increased with the spread of sewerage. At present, most of this sludge is backfilled in the ground or dumped into the ocean.

[0003]

However, there is a limit to the processing by backfilling or discarding, and problems such as environmental pollution have occurred. In addition, not only sludge but also various wastes are produced in large quantities. The present invention has been proposed in view of the above, and an object of the present invention is to provide a waste treatment apparatus for producing activated carbon that can safely and easily treat waste such as sludge and produce an effective use thereof.

[0004]

According to the first aspect of the present invention, there is provided an input unit for inputting waste,
A drying section for drying the waste with hot air, a firing section for further firing and carbonizing the dried waste, a deodorizing section for deodorizing and cooling high-temperature exhaust including odors generated during drying and firing, and drying. Disposal equipped with a hot air source that sends out high-temperature air for use, a drive source that rotates the rotary drum to stir the waste stored in the rotary drum, and a heat source to burn dry waste An apparatus for treating waste, wherein waste introduced from an input section is dried in a drying section and carbonized in a firing section to form activated carbon. Also,
According to a second aspect of the present invention, a plurality of arms having a blade at one end and a weight at the other end and having a weight at the other end are provided along a longitudinal direction in a rotary drum constituting a drying unit. It is arranged rotatably, and each arm is erected by the action of the weight so that the blade is always on the upper side,
Waste adhered to the inner surface of the rotating drum is scraped off by a blade.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view in which a part of a waste disposal apparatus according to the present invention is cut away.

[0006] The outline of the waste treatment apparatus 1 is as follows: an input section 2 for inputting waste such as sludge; a drying section 3 for drying sludge with hot air; and a firing section 4 for further firing and carbonizing the dried sludge.
And a deodorizing section 5 for deodorizing and cooling high-temperature exhaust gas including odors generated during drying and firing, a hot air source 6 for sending high-temperature air for drying, and stirring the sludge stored in the rotary drum. Source 7 for rotating the rotary drum
And a heat source 8 for firing the dried sludge.

The charging section 2 is composed of a hopper 21 for charging sludge containing a large amount of water and introducing the sludge into a drying section 3 described later, and is supported by a scaffold-shaped column 22. On the inclined lower surface of the hopper 21, an openable opening 23 with a lid that can be used as a manhole for inspection and cleaning is opened. Also, a hot air source 6 capable of sending out hot air faces the open end on the downstream side of the hopper 21.

The hot air source 6 is formed by a burner connected to a combustible gas cylinder such as propane and a blower. The hot air source 6 is rotatably mounted on the rotating pedestal 61 so as not to be in the way during operation. Further, the rotating pedestal 61 is installed on a gantry 62 for securing a height.
Therefore, at the time of work, the opening 23 with the lid can be largely opened by rotating the hot air source 6 so as not to hinder the work.

The drying section 3 comprises a cylindrical rotating drum 31 rotated by a driving source 7. The rotating drum 31 is provided with gantry 32, 3
The roller 2 is rotatably supported by rollers 33 provided on the roller 2.

A sprocket 34 is formed on the outer surface of the rotary drum 31, and the sprocket 34 is connected to a reduction gear 72 connected to a motor 71 of the drive source 7 by a chain 73. Then, the rotating drum 31 is rotated at an appropriate rotation speed by the operation of the motor 71.

On the other hand, a plurality of shelves 35 are spirally or inclinedly arranged inside the rotary drum 31 in order to convey and agitate the sludge M to the outlet side. For this reason,
The sludge M supplied from the hopper 21 is supplied to the rotating drum 31
With the rotation of, it is conveyed to the outlet side while repeatedly adhering to the wall surface, rising, peeling off and falling. In this process, the water is blown off by the hot air.

A trumpet-shaped guide member 36 is provided on the inlet side of the rotary drum 31 to guide sludge M from the hopper 21. In addition, a curtain-shaped backflow prevention member 37 is provided so that hot air does not flow back.

If the hot air in the drying section 3 is too strong, dust and the like in the drying section 3 reach the baking section 4 and the deodorizing section 5, so that the force of the hot air is reduced and the dust is removed. It is good to arrange the mesh 38 for this.

At the outlet side of the rotary drum 31, a sintering section 4 for further sintering the dried sludge M to form activated carbon C is formed. The baking section 4 has a pot-shaped inner cylinder 41 that rotates together with the rotary drum 31 and an outer cylinder 42 that covers the inner cylinder 41, and includes a heat source 8 that heats the inner cylinder 41.

On the inner surface of the inner cylinder 41, a plurality of ribs 43 are provided.
Is provided, and the dried sludge M is lifted upward and stirred. Further, the inner cylinder 41 has a substantially trapezoidal cross-sectional shape with the inlet side, that is, the inner surface side being wider than the bottom surface side.
Has a shape that does not accumulate.

The heat source 8 comprises a propane gas cylinder 81 attached to the outer surface of the rotary drum 31 and a burner 82 connected to the cylinder 81. In the illustrated embodiment,
A plurality of cylinders 81 and burners 82 are provided. Further, a valve 84 for adjusting the thermal power is provided in the middle of a pipe 83 connecting the burner 82 and the cylinder 81. still,
The number and arrangement of the cylinders 81 and burners 82 can be set as appropriate. In addition, an air port for supplying oxygen necessary for combustion of the burner 82 is appropriately opened in the outer cylinder 42.

The baking section 4 is provided with an opening / closing section 44 for taking out activated carbon C produced by baking the sludge M. The opening / closing portions 44 are provided at two positions in the illustrated embodiment. Note that a heat insulating material is preferably provided inside the outer cylinder 42.

On the other hand, the activated carbon C produced in the firing section 4 is
Since the sizes are not uniform, particles of activated carbon C are made uniform by mixing, for example, 5 to 7 iron balls B. That is, if the ball B is mixed, the mass of the activated carbon C collides with the ball B, and the particles of the activated carbon C are aligned. Then, the size and number of the balls B to be mixed are adjusted to form a desired particle size, for example, about 10 mm.

A passage 45 through which the hot air flows is communicated with the center of the baking section 4, and a purification tank 51 for removing odor and the like is provided at the end of the passage 45. The passage 45 is provided in the firing section 4
The side is rotatable, and is formed airtight so that odor and the like do not leak.

On the other hand, the treated water W is injected into the purification tank 51, sucked up by a water absorption pump 52, and sprayed from a nozzle 53 disposed above the purification tank 51.
That is, the odor is removed by the wet deodorizing method, and only the steam is exhausted from the chimney 58. The treated water W used for the deodorizing treatment is circulated and reused. The treated water W is exchanged at an appropriate frequency, for example, about twice a day. Since the wastewater at this time is harmless, it can be permeated into the ground and discarded.

Further, a water level adjusting means is provided in the purification tank 51 so that the overflowed treated water W does not flow back to the baking section 4. The water level adjusting means includes, for example, a float 54 disposed in a purification tank 51 and a water stopcock 55 connected to the float 54 facing an adjusting drain port 56 provided at the bottom of the tank. That is, when the water level L in the tank 51 rises, the water stopcock 55 also rises and the adjusting drain port 5
6 is opened, and when the water level L falls, the water stopcock 55 also descends and closes the adjustment drain port 56, so that the water level L can be kept constant.

Further, a water supply port for exchanging the internal treated water W is provided at the bottom of the purification tank 51, and the treated water W is exchanged by operating the water supply valve 57 as necessary.

Next, a process of treating sludge M in the above-described waste treatment apparatus 1 will be described. First, the sludge M is put into the hopper 21. The sludge M at this time has a water content of 80 to
It contains about 90%. The introduced sludge M enters the drying unit 3 along the slope. The drying unit 3 is rotated by the drive source 7 and is supplied with hot air by the burner 82 and the blower. Therefore, the sludge M that has entered the drying unit 3 is gradually conveyed to the outlet side. At this time, the water evaporates and the water content is dried to about 10 to 15%.

The dried sludge M entering the firing section 4 is further fired by the burner 82 and carbonized to form activated carbon C. Then, the activated carbon C becomes almost uniform in particle size due to the action of the ball B mixed in the firing section 4.

On the other hand, the hot air containing the odor that has finished its role becomes steam deodorized by the action of the treated water W sprayed in the purification tank 51 and is discarded from the chimney 58.

Then, the opening / closing section 44 of the firing section 4 is opened to take out the carbonized sludge M, that is, the activated carbon C. The activated carbon C can be effectively used as a soil conditioner, a special fertilizer, a deodorant, and the like.

FIGS. 5 and 6 show a sectional view along the axial direction and a sectional view perpendicular to the axis of the drying unit 3 according to another embodiment. This embodiment provides a waste treatment apparatus 1 suitable for high-viscosity waste.

In the drying section 3 in this embodiment, an inner shaft 91 is arranged along the longitudinal direction of the rotating drum 31.
The inner shaft 91 can be supported by a cross-shaped bearing post 92 whose both ends are fitted to the rotating drum 31.

The inner shaft 91 has a rotating drum 31 at one end.
An arm 94 having a blade 93 in contact with the inner surface of the arm is rotatably mounted on the arm 94. The blade 93 is formed of a material having appropriate elasticity such as rubber. The tip of the arm 94 is bent so that the tip of the blade 93 is
It is good to form so that it may contact the inner surface at an angle.

On the other hand, a weight 95 for raising the arm 94 is provided at the other end of the arm 94. For this reason,
Even if the rotary drum 31 rotates, the arm 94 can always keep the state where the blade 93 is up.

The arm 94 having the above-described structure is attached to the inner shaft 9.
A plurality is arranged so as to be rotatable along 1. The blades 93 of the arranged arms 94 are configured so that the waste T proceeds to the exit side. In this embodiment, the drying unit 3
Configurations other than the above are the same as those of the above-described embodiment, and thus description thereof is omitted.

When the waste T having a high viscosity is put into the waste treatment apparatus 1 having the drying unit 3 according to this embodiment, the waste T attached to the inner surface of the rotary drum 31 is scraped off by the blade 93. Therefore, even the waste T having high stickiness can be dried without rotating on the spot while being attached.

In addition, if the shelf 35 of the drying unit 3 in the first embodiment is detachably formed and the arm 94 having the blade 93 in the second embodiment is attached, various methods can be used. The waste treatment apparatus 1 can deal with various kinds of waste.

Although the present invention has been described with reference to the embodiment shown in the drawings, the present invention is not limited to the above-described embodiment, and can be appropriately implemented as long as the configuration described in the claims is not changed.

[0035]

In summary, the present invention comprises a charging section for charging waste, a drying section for drying waste with hot air, a firing section for further firing and carbonizing the dried waste, A deodorizing unit that deodorizes and cools the high-temperature exhaust gas including odor generated at the time, a hot air source that sends out high-temperature air for drying, and rotates the rotary drum to stir the waste stored in the rotary drum A waste treatment apparatus provided with a driving source to be driven and a heat source for firing dried waste, wherein the waste input from the input section is dried in the drying section and carbonized in the firing section to form activated carbon. So,
Activated carbon that can be used as a soil conditioner, a special fertilizer, a deodorant, etc. can be produced without causing air pollution and generation of offensive odor. Therefore, the present invention can not only safely and easily treat sludge discharged from sewer facilities expanded by the improvement of living environment and various wastes caused by industrial development, but also can reduce wastes. The practical value that can be transformed into activated carbon that can be used again effectively is extremely high.

[Brief description of the drawings]

FIG. 1 is a front view in which a part of a waste disposal apparatus according to the present invention is cut away.

FIG. 2 is a right side view of the waste disposal apparatus.

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is a sectional view taken along the line BB of FIG. 1;

FIG. 5 is a sectional view taken along an axial direction of a drying unit according to another embodiment.

FIG. 6 is a cross-sectional view in a direction orthogonal to an axis of a drying unit according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Waste treatment apparatus 2 Input part 3 Drying part 4 Firing part 5 Deodorizing part 6 Hot air source 7 Drive source 8 Heat source 31 Rotary drum 93 Blade 94 Arm 95 Weight

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI F23G 7/04 601 F23G 7/04 601J 602 602B 603 603L // C01B 31/02 101 C01B 31/02 101B C09K 101: 00

Claims (2)

[Claims] 1. An input section for inputting waste, a drying section for drying waste with hot air, a firing section for further firing and carbonizing the dried waste, and an odor generated during drying and firing. A deodorizing unit that deodorizes and cools high-temperature exhaust gas, a hot air source that sends out high-temperature air for drying, a driving source that rotates the rotary drum to stir the waste housed in the rotary drum, and drying. A waste treatment apparatus provided with a heat source for baking the waste, wherein the waste introduced from the input section is dried in the drying section and carbonized in the firing section to form activated carbon. Object processing equipment. 2. A plurality of arms having a blade at one end and a weight at the other end in a rotating drum constituting a drying unit, the arm being rotatable along a longitudinal direction. 2. The arrangement according to claim 1, wherein each arm is erected by the action of the weight so that the blade is always on the upper side, and the waste attached to the inner surface of the rotary drum is scraped off by the blade. Waste treatment equipment.