JP3357840B2 - 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. However, in this case, regardless of the oxygen concentration in the processing tank, the fan is constantly rotated to supply outside air to the processing tank regardless of the oxygen concentration in the processing tank. However, there is a problem in that the amount of excess becomes excessive and affects the activity of microorganisms.

[0003]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to control the inside of a treatment tank to an oxygen concentration suitable for the activity of microorganisms.

[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. In the process of decomposing the water, an air supply means for supplying air into the processing tank is provided, and an oxygen sensor for detecting the oxygen concentration in the processing tank is provided, and the oxygen concentration in the processing tank is detected by the output of the oxygen sensor. By controlling the air supply means, the inside of the processing tank is maintained at a predetermined oxygen concentration. Further, the present invention detects the oxygen concentration in the processing tank based on the output of the oxygen sensor and compares it with the oxygen concentration in the atmosphere. When the oxygen concentration in the processing tank is lower than the oxygen concentration in the atmosphere, the air supply means is provided. The control is performed to increase the oxygen concentration in the processing tank. Further, according to the present invention, the oxygen concentration in the processing tank is detected by the output of the oxygen sensor, and if the oxygen concentration in the processing tank does not change, it is determined that there is no or little waste in the processing tank and the notification is performed. It is provided with means.

[0005]

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 6 whose both ends are supported by a pair of bearings (not shown);
It is mainly composed of a plurality of agitating blades 7 projectingly secured at appropriate intervals around the rotary shaft, and a motor (not shown) for driving the rotary shaft 6 to rotate.

Reference numeral 8 denotes an exhaust hole opened on the upper side wall of the processing tank 3, and an exhaust hole 9 opened at the tip is provided with treated water 10 for deodorization.
Tank connected to an exhaust duct 11 which is open to the water, a deodorizing fan 12 whose rotation can be controlled in at least two stages, strong and weak, and which stores the treated water 10 in the middle of the exhaust duct. An exhaust fan 1 for discharging exhaust gas generated from the treated water surface of this tank is provided on the upper surface of the tank 13.
4 is attached. The treated water 10 is charged with an effective microorganism complex bacterium mainly composed of aerobic Bacillus subtilis (Bacillus sp.) And blended with other bacteria for deodorization. As malodorous substances in the exhaust gas, 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 isobutyl ketone, There are ethyl acetate, isobutanol, propionaldehyde, isovaleraldehyde, isobutyraldehyde, normal valeraldehyde, normal butyraldehyde and the like, and a bacterium that decomposes these is used.
A panel heater 16 in which a heater 15 such as a sheath 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 or the like, and power is supplied. For example, microorganisms for waste treatment that are controlled and blended with yeasts and other bacteria according to the type of waste, with mainly aerobic Bacillus subtilis (Bacillus subtilis genus) being prone to multiply. It is configured to control the heating to the temperature. Reference numeral 17 denotes an air intake hole formed in the upper side surface of the outer case 18, which communicates with the upper portion of the processing tank 3 through an air supply duct 19, and an air supply fan 20 is mounted in the air supply duct. It constitutes air supply means. Reference numeral 21 denotes an oxygen sensor attached to the edge of the outlet side of the exhaust hole 8, which detects the oxygen concentration in the exhaust gas passing through the portion, thereby substantially detecting the oxygen concentration in the processing tank 3. The output is input to the control circuit 22 mounted in the storage room 4. The control circuit 22 controls energization of a motor (not shown) for driving the rotary shaft 6, the deodorizing fan 12, the exhaust fan 14, the heater 15, and the like, and performs processing based on the output of the oxygen sensor 21. The oxygen concentration in the tank 3 is detected, and if the oxygen concentration in the treatment tank has not changed for a predetermined time or the oxygen concentration has not decreased, there is no waste in the treatment tank 3 or the amount of waste is small. A notifying means 23 for notifying that it has become an alarm and activating a buzzer is provided. 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 treatment tank 3 is controlled to a temperature suitable for the growth and propagation of microorganisms (for example, 35 to 45 ° C. for garbage, and 50 to 70 ° C. for rubber gloves) by controlling the energization of the heater 15. The rotating shaft 6 is rotated to rotate the stirring blades 7... To mix waste and microorganisms, and at the same time, the deodorizing fan 12 and the exhaust fan 1.
The odor generated from the processing tank 3 is rotated by rotating the processing tank 4 to remove the odor from the processing water 10. In addition, when the rotation of the air supply fan 20 is controlled by the control circuit 22 and the oxygen concentration in the processing tank 3 detected by the oxygen sensor 21 becomes lower than, for example, the general oxygen concentration (21%) in the atmosphere, air supply is performed. The outside air is supplied into the processing tank 3 by rotating the fan 20. Conversely, if the oxygen concentration in the processing tank 3 becomes higher than the oxygen concentration in the atmosphere, the supply fan 2
0, or reduce the number of rotations to reduce the amount of air supply into the processing tank 3, and control the oxygen concentration in the processing tank 3 to be substantially the same as the oxygen concentration in the atmosphere to increase the growth of microorganisms. To an oxygen concentration suitable for In the above embodiment, the oxygen concentration in the processing tank 3 is compared with the oxygen concentration in the general atmosphere to control the amount of air supplied to the processing tank 3, but the present invention is not limited to this. Instead, it may be configured to maintain an oxygen concentration suitable for the activity of the microorganism according to the type of the microorganism. On the other hand, when there is no change in the oxygen concentration in the processing tank 3, it is determined that there is no or little waste in the processing tank, and this is notified by the notification means 23, and the waste in the processing tank 3 is discarded. It is possible to automatically notify the time of loading.

[0007]

According to the structure of the present invention, the oxygen concentration in the processing tank is detected by the oxygen sensor, the air supply means for supplying air into the processing tank is controlled, and the inside of the processing tank is maintained at a predetermined oxygen concentration. Thus, the treatment tank can be maintained in an environment suitable for the growth and activity of microorganisms, and the efficiency of waste treatment can be improved.

Further, according to the present invention, when the oxygen concentration in the processing tank is detected by an oxygen sensor and compared with the oxygen concentration in the atmosphere, when the oxygen concentration in the processing tank is lower than the oxygen concentration in the atmosphere,
By controlling the air supply means to maintain the inside of the treatment tank at approximately the same oxygen concentration as the atmosphere, the inside of the treatment tank is maintained in an environment suitable for microbial activity, and waste is efficiently decomposed. Things that can do things. Further, according to the present invention, the oxygen concentration in the processing tank is detected by an oxygen sensor, and if the oxygen concentration in the processing tank does not change, it is determined that there is no waste in the processing tank or that the remaining amount of waste is small. With this configuration, the additional time of the waste can be automatically notified without setting the operation time by a timer or the like.

[Brief description of the drawings]

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

[Explanation of symbols]

 3 Processing tank 5 Stirring means 20 Air supply fan 21 Oxygen sensor 23 Notification means 5

────────────────────────────────────────────────── ─── 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 (56) References JP-A-8-243528 (JP, A) JP-A-8-131993 (JP, A) JP-A-61-164700 (JP, A) (58) Fields investigated Int.Cl. ⁷ , DB name) B09B 3/00

Claims (2)

(57) [Claims] Claims 1. A waste and microorganisms are charged into a treatment tank,
The waste and microorganisms are agitated by a stirring means provided in the treatment tank, and the waste is decomposed by the microorganisms. In addition, air supply means for supplying air into the treatment tank is provided. Providing an oxygen sensor for detecting the oxygen concentration in the tank, detecting the oxygen concentration in the processing tank by the output of the oxygen sensor to control the air supply means,
Both Maintaining the processing bath to a predetermined oxygen concentration, the
Oxygen concentration in the processing tank detected by the output of the sensor
If the degree does not change, there is no or little waste in the treatment tank
A waste treatment apparatus characterized in that a means for determining and informing is provided . 2. An oxygen concentration in the processing tank is detected based on an output of the oxygen sensor and compared with an oxygen concentration in the atmosphere. When the oxygen concentration in the processing tank is lower than the oxygen concentration in the atmosphere, the oxygen concentration is detected. 2. The waste treatment apparatus according to claim 1, wherein the air supply means is controlled to increase the oxygen concentration in the treatment tank.