JP3357836B2 - Waste treatment equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste treatment apparatus for treating waste such as paper, dust, cinders, rubber gloves and the like using microorganisms.

[0002]

2. Description of the Related Art In a waste treatment apparatus that decomposes waste such as garbage and rubber gloves using microorganisms, the waste and microorganisms for treatment are put into a treatment tank and stirred by a stirrer. The inside of the processing tank is controlled to a temperature suitable for the growth of microorganisms by a heater or the like, and a large amount of air is supplied to promote the growth of microorganisms. On the other hand, in a relatively small processing apparatus, a fan 10 is provided above the processing tank 1 as shown in, for example, Japanese Patent Application Laid-Open No. 7-136618. In this case, air is supplied only to the waste located at the upper part of the processing tank, and there is a problem that oxygen is hardly supplied into the processing tank.

[0003]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to increase the amount of oxygen supplied to microorganisms located inside a processing tank to improve the decomposition efficiency.

[0004]

According to the present invention, waste and microorganisms are charged into a treatment tank, and the waste and microorganisms are stirred by stirring means provided in the treatment tank. The stirring means is constituted by protruding a stirring member in the radial direction of the rotating shaft, and is provided with air supply means for supplying air into the processing tank, and an air outlet of the air supply means Is set at least below the height position of the rotating shaft.

Further, according to the present invention, the air outlet of the air supply means is opened in parallel with the axial direction of the rotary shaft.
Further, in the present invention, a plurality of agitating members are provided so as to protrude at appropriate intervals in the axial direction of the rotary shaft, and the air blowing holes of the air supply means are arranged between the agitating members. Further, the present invention also sets a plurality of opening positions of the air outlets of the air supply means, sets a part of the opening position of the air outlets above the rotating shaft, and sets the opening area of the air outlets, The opening area above the rotating shaft is set to be smaller than the opening area below the rotating shaft.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described first with reference to FIG. 1. Reference numeral 1 denotes an apparatus main body, which has an opening 2 on one side and a U-shaped bottom. A processing tank 3 having a rectangular cylindrical shape is provided, and a storage chamber 4 is defined on the other side.

Reference numeral 5 denotes a stirring means mounted in the processing tank 3, and a rotating shaft 7 having both ends pivotally supported by a pair of bearings 6 and 6, which are protruded and fixed around the rotating shaft at an appropriate interval. A plurality of agitating blades 8... And a motor 11 installed in the storage chamber 4 and configured to rotate the rotating shaft 7 via a belt 9 and a pulley 10 are mainly configured.

Reference numeral 12 denotes an exhaust hole opened on the upper side wall of the processing tank 3, and an exhaust hole 13 opened at the tip connects an exhaust duct 15 opened into the water of the treated water 14 for deodorization. An exhaust fan 16 is mounted in the middle of the duct, and these constitute an exhaust passage.

The treated water 14 is filled with an effective microbial complex which is mainly composed of aerobic Bacillus subtilis (Bacillus sp.) And is blended with other bacteria for deodorization. Ammonia, methyl mercaptan, hydrogen sulfide, methyl sulfide, methyl disulfide, trimethylamine, acetaldehyde, styrene, propionic acid, normal butyric acid, normal valeric acid, isovaleric acid, toluene, xylene, methyl There are isobutyl ketone, ethyl acetate, isobutanol, propionaldehyde, isovaleraldehyde, isobutyraldehyde, normal valeraldehyde, normal butyraldehyde, etc., and a bacterium that decomposes these is used. An exhaust fan 18 for discharging exhaust gas generated from the surface of the treated water in the tank is provided on the upper surface of the tank 17 for storing the treated water 14. On the other hand, a panel heater 20 in which a heater 19 such as a sheathed heater is embedded is fixed to the outer bottom wall surface of the processing tank 3, and the temperature in the processing tank 3 is detected by a temperature sensor such as a well-known thermistor (not shown). The energization is controlled, and the microorganisms for waste treatment, which are mainly composed of aerobic Bacillus subtilis (Bacillus subtilis), are blended with yeasts and other bacteria according to the type of waste, and grow. It is configured to control heating to an easy temperature. Reference numeral 21 denotes an air intake hole drilled in the upper side surface of the outer case 22 of the main body, and a plurality of air outlet holes 23... Opened at the tip are opened at a lower position than the rotary shaft 7 in the processing tank 3. By connecting the base ends of the air supply ducts 24,.
When the inside of the processing tank 3 becomes negative pressure due to the rotation of 6, 6, the outside air is sucked into the air supply ducts 24 and blows out into the processing tank 3 from the air blowing holes 23. The air supply ducts 24 are located between the stirring blades 8 and the air blowing holes 23 are opened in parallel with the axial direction of the rotary shaft 7, and the stirring blades 8 It is configured to rotate at a position as far away from the hole 23 as possible, so that the stirring blade 8.
Is rotated so that the waste is not pushed into the air blowing holes 23 and is not closed. Reference numeral 25 denotes an outlet opening at one side of the bottom of the processing tank 3 for taking out a residue of the waste decomposed in the processing tank, and is closed by a lid 26 so as to be openable and closable. FIG. 3 shows another embodiment of the present invention, in which the opening position of a part of the air outlets 23a of the air supply ducts 24 is higher than the height position of the rotary shaft 7. And the opening area thereof is set to be smaller than the opening area of the air blowing holes 23 opened at a position lower than the height position of the rotary shaft 7. By supplying a large amount of air to the inside of the processing tank 3 which is relatively hard to come into contact with the air without being moved above the processing tank 3 even by the agitation, oxygen is supplied substantially uniformly to the entire waste. It is configured to improve processing efficiency. Thus, when treating the waste, first, the waste to be treated and the wood chips called a hole chip or a biochip inhabiting the microorganism for treatment are introduced into the treatment tank 3 from the input port 2. The temperature in the processing tank 3 is controlled by controlling the energization of the heater 19 to a temperature suitable for the growth and propagation of microorganisms (for example, 35 to 4 for garbage).
While controlling the temperature to 5 ° C. and 50 to 70 ° C. for rubber gloves), the power supply to the motor 11 is controlled to rotate the stirring blade 8 to mix waste and microorganisms, and at the same time to rotate the exhaust fans 16 and 18. The odor generated from the treatment tank 3 is deodorized by the treatment water 16 and exhausted to the outside, so that the inside of the treatment tank 3 has a negative pressure.
3. Air is blown out to supply air (oxygen) necessary for growth to microorganisms.

On the other hand, when the processing is completed after a predetermined processing time or the like has elapsed, the lid 26 is opened and the residual matter remaining in the processing tank 3 is taken out from the outlet 25.

[0011]

According to the structure of the present invention, the air outlet of the air supply means is opened below the height position of the rotating shaft of the stirring means for stirring the waste and the microorganisms, and the treatment tank is opened from the air outlet. By supplying oxygen necessary for growth into the inside, the activity of microorganisms can be more activated and the efficiency of waste treatment can be improved.

According to the structure of the present invention, the air outlet is opened in parallel to the axial direction of the rotary shaft, so that the waste is prevented from being pushed into the air outlet by the rotation of the stirring member provided on the rotary shaft. You can do it. Further, according to the configuration of the present invention, by disposing the air blowing holes between the stirring members, the stirring members are configured to rotate at positions away from the air blowing holes. It can prevent pushing into the hole. Further, according to the configuration of the present invention, a plurality of opening positions of the air blowing holes are set, the opening positions are set at positions higher than the rotating shaft, and the openings of the air blowing holes set at positions higher than the rotating shaft are set. By setting the area smaller than the opening area of the air outlet opening below the rotating shaft, the amount of air supply to the bottom inside the processing tank, which moves little above the processing tank even with stirring, increases the processing. It is possible to maintain the balance of the amount of oxygen supplied to the entire waste in the tank and to further improve the processing efficiency.

[Brief description of the drawings]

FIG. 1 is a front vertical sectional view showing an embodiment of the present invention.

FIG. 2 is a side longitudinal sectional view of the same.

FIG. 3 is a front vertical sectional view showing another embodiment.

[Explanation of symbols]

 3 Processing tank 5 Stirrer 7 Rotating shaft 8 Stirrer 23 Air outlet 4

────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Noriaki Hirano 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Tottori Sanyo Electric Co., Ltd. (72) Inventor Teruo Okuda 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Tottori JP-A-3-93688 (JP, A) JP-A-7-136621 (JP, A) JP-A-7-148473 (JP, A) JP-A-5-228458 ( JP, A) JP-A-8-323335 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B09B 3/00

Claims (5)

(57) [Claims] Claims 1. A waste and microorganisms are charged into a treatment tank,
The waste and the microorganisms are stirred by the stirring means provided in the treatment tank, and the waste is decomposed by the microorganisms. In the apparatus in which the waste is decomposed and treated, a stirring member is provided in a radial direction of a rotating shaft provided horizontally. Protruding configuration and above
The air outlet opening parallel to the axis of the rotating shaft
Ri provided with a gas supply means for supplying air into the treatment tank, the air supply means of the air blowout hole at least the than the height position of the rotary shaft, characterized in that it has been set down waste treatment apparatus . 2. The method according to claim 1, wherein the stirring member is formed by projecting a plurality of members at appropriate intervals in the axial direction of the rotating shaft, and the air blowing holes of the air supply means are arranged between the stirring members. The waste disposal apparatus according to claim 1, characterized in that: 3., characterized in that the opening position of the air outlet holes of the air supply means and a plurality sets, waste disposal apparatus according to claim 1 or 2. 4. The waste disposal apparatus according to claim 3 , wherein an opening position of a part of the air blowing hole is set above the rotary shaft. 5. The method according to claim 1, wherein an opening area of the air blowing hole is set to be smaller than an opening area below the rotary shaft.
The waste disposal device according to claim 4 .