JP3490915B2 - Underwater decomposition type garbage processing equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underwater decomposition type garbage disposal device having a heated activated carbon deodorizer unit at the bottom.

[0002]

2. Description of the Related Art Conventionally, a defoaming air / water separator that aerates aerial microorganisms in warm water in a decomposition tank to promote the activity of aerobic microorganisms to decompose garbage and to process a large amount of bubbles generated at that time A series of garbage decomposing devices equipped with a decomposing tank provided in the above, an evaporative solidifying tank for heating and solidifying the decomposed residue by drying, and a deodorizer attached to these have already been developed (for example, patents Japanese Patent Application No. 9-356136).

[0003]

SUMMARY OF THE INVENTION In the conventional underwater decomposition type garbage disposal device, the decomposition of garbage is promoted by aeration in warm water in the decomposition tank to promote the activity of aerobic microorganisms. The foam generated in a large amount in step (3) adopts a defoaming air-water separator having the structure shown in Fig. 3 and is attached to the ceiling part of the decomposition tank to separate it into foam and exhaust gas, and the exhaust gas is further passed through the deodorizer. It was released to the atmosphere. However, when using activated carbon as a deodorizing device for a garbage decomposing device, a large amount of evaporated water is contained in the exhaust air and sent to the deodorizing device. It had a problem that it decreased and disappeared.

In view of these problems, the present invention uses activated carbon capable of maintaining the deodorizing ability for a long time even when it is used in an underwater decomposition type garbage disposal device containing a large amount of evaporated water in the exhaust gas. The invention was invented for the purpose of providing an underwater decomposition type garbage treatment device.

[0005]

[Means for Solving the Problems] Activated carbon for deodorization, which is heated by a heating heater, is filled in the lower half of the decomposition tank located below the bottom surface of the treated water filled with the treated water of an underwater decomposition type garbage treatment device. The exhaust gas from the decomposition tank is introduced into the activated carbon for deodorization, and the heating pipe for heating and lowering the relative humidity is connected to the heating pipe and the heating pipe, and the exhaust gas with the decreased relative humidity is discharged into the activated carbon for deodorization. And a deodorizer exhaust outlet pipe through which the exhaust gas that has flowed into the deodorizing activated carbon enters and discharges to the outside of the decomposition tank to form a heated activated carbon deodorizing unit inside the lower half of the decomposition tank.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to the drawings. In FIG. 1 and FIG. 2, 1 is an underwater decomposition type decomposition tank, and a treated water bottom surface 2 is longitudinally cut inside the lower half of the decomposition tank 1. The treated water 3 is poured onto the treated water bottom surface 2 by forming the surface into a substantially V-shape. The deodorizing activated carbon 4 is filled inside the decomposition tank 1 below the treated water bottom surface 2. More specifically, the deodorizing activated carbon 4 may be filled from the deodorizing activated carbon filling port a provided on the lower half side wall of the decomposition tank 1. Deodorizer exhaust inlet pipe 5
Is, for example, a steel pipe having a hollow inside, and both ends of the hollow portion are closed to exhaust gas exhaust holes 6, which penetrate the inner hollow portion at the peripheral surface.
6 are perforated and embedded laterally in the deodorizing activated carbon 4 below the bottom surface 2 of the treated water. The heating pipe 7 is formed of, for example, a copper pipe, and one end of the heating pipe 7 is attached to one end of the deodorizer exhaust inlet pipe 5 so as to communicate with the internal hollow portion, and is bent into a U shape and embedded in the deodorizing activated carbon 4 The other end is led out of the decomposition tank 1 and communicated with the exhaust outlet 9 of the steam separator 8 attached to the ceiling of the decomposition tank 1, and is connected by the primary exhaust pipe 10. As the deodorizer exhaust outlet pipe 11, for example, a hollow steel pipe is used, both ends of the hollow portion are closed, and exhaust inlet holes 12, 12, ... Penetrating to the inner hollow portion are formed in the peripheral surface to deodorize. For example, one end is attached and fixed to the inner surface 13 of the decomposition tank 1 in a state of being embedded laterally in the deodorizing activated carbon 4 substantially in parallel with the equipment exhaust inlet pipe 5. More specifically, the heating activated carbon deodorizer section K is formed by the heating pipe 7, the deodorizer exhaust inlet pipe 5, and the deodorizer exhaust outlet pipe 11 embedded in the heated deodorizing activated carbon filled in the lower half of the decomposition tank 1. It is characterized in that it is formed in the lower half of the decomposition tank 1. One end of the secondary side exhaust pipe 14 is attached to one end of the deodorizer exhaust outlet pipe 11 so as to communicate with the internal hollow portion, and the other end side is led out to the outside of the decomposition tank 1 through the drain 15 for piping. . The heater 16 is attached to the bottom surface 17 of the decomposition tank 1, and is heated from the bottom surface 17 to sequentially heat the deodorizing activated carbon 4, the heating pipe 7, the deodorizer exhaust inlet pipe 5, the treated water 3 and the like. The submersible pump 18 for circulating water is arranged in the treated water 3, and a circulating pipe 21 is connected to a circulating water jet pipe 20 installed on the water surface 19.
The turbo fan 22 is provided so as to blow air into a blow-in port 24 provided on a side wall of the decomposition tank 1 at a height position of the spray water 23 jetted from the circulating water jet pipe 20. Garbage dumper 2
5 is formed, for example, in a hopper shape having an inclined surface at the bottom, and provided with a crushing disposer 26 at the bottom and a raw garbage feed pipe 27 is connected to communicate with the inside of the treated water 3 of the decomposition tank 1 to remove the raw garbage. It is supplied into the treated water 3. The cyclone residue separator 28 is provided outside the decomposition tank 1. For example, as shown in FIG. 4, a low specific gravity take-out pipe 30 and a heavy specific gravity take-out pipe 31 are provided at the upper and lower ends of a barrel 29, respectively. A treated water introduction pipe 32 is provided at a substantially central position of the entire height of the body 29, and the water pipe 21 and the treated water pipe 33 in the decomposition tank 1 are connected by piping. The separated water take-out pipe 34 has a return pipe 35 protruding from the barrel 29 at the upper end and a separated water intake port 36 opened at the upper position of the treated water introducing pipe 32 by being bent into an L shape at the lower end. Then, a treated water return pipe 37 communicating with the inside of the decomposition tank 1 is connected to the return pipe 35. The residue drying and solidifying tank 38 is provided with, for example, a residue take-out frame 39 in the tank, a heater 40 at the bottom, and a heat insulating material 41 wound around the residue, and the cyclone residue separator 28 has a specific gravity. The take-out pipe 31 part and the heavy-gravity liquid feed pipe 42 are connected by piping, and the heavy-gravity liquid is taken into the residue dry solidification tank 38, dried and solidified, and taken out.

[0007]

[Example] Deodorizer exhaust inlet pipe 5 and deodorizer exhaust outlet pipe 1
In the embodiment, one is shown for each one, but it is a matter of course that a plurality may be used. Further, the circulating water drop buffer plate 43 formed of a punching plate is attached to the circulating water jet pipe 2
If it is provided between 0 and the water surface 19, the drop force of the circulating water is buffered, water droplets can be prevented from scattering from the water surface 19, and the fine particle environment of the spray water 23 is not impaired. In addition, in order to effectively use the amount of heat remaining in the exhaust gas, the exhaust heat recovery exchanger 4
4 to take in from the exhaust pipe 14 into the decomposition tank 1 or to the exhaust inlet 45 of the exhaust heat recovery exchanger 44 'provided on the air intake side of the turbofan 22 from the secondary side exhaust pipe 14. Exhaust gas may be sent to be used for heating the air blown from the turbo fan 22.

Next, the operation of the present invention will be described. Treated water 3 is pumped upward by a circulating water submersible pump 18 and sprayed as circulating water 23 from a circulating water injection pipe 20 toward the spraying water 23. When the compressed air is blown from the side by the turbo fan 22 and the sprayed water 23 is blown up and dropped, the sprayed water 23 comes into contact with the sent air, and the sprayed water 23 containing a large amount of oxygen falls on the water surface 19 to be treated water. 3, the treated water containing sufficient oxygen necessary for the growth and decomposition of aerobic bacteria can be obtained. It is sent into the treated water 3 through the feed pipe 27 and decomposed. Next, the treated water 3 produces a large amount of bubbles in order to grow and decompose aerobic bacteria, the exhaust containing the large amount of bubbles reaches the steam separator 8, and the bubbles are generated by the rotating rotary blades 46. Only the exhaust gas blown away goes out from the exhaust gas outlet 9 and goes toward the heating pipe 7 side through the primary side exhaust pipe 10. In this case, the exhaust gas from the steam separator 8 has high humidity (for example, a temperature of 35
Although the temperature is 95 ° C. and the humidity is 95%), the heating pipe 7 meanders through the deodorizing activated carbon 4 heated by the heater 16 while passing through the heating pipe 7, so that the exhaust gas is not emitted. It is heated from 35 ° C. to about 43 ° C. in the heat tube 7, and the relative humidity becomes 60%. More specifically, in this case, the deodorizing activated carbon 4 is preferably set to a temperature of 50 ° C. and a humidity of 40% by the heater 16. Next, the exhaust gas whose relative humidity has dropped to 60% by the above heating enters the deodorizer exhaust inlet pipe 5 through the heating pipe 7, and is simultaneously discharged from the exhaust outlet holes 6, 6, ... of the deodorizer exhaust inlet pipe 5. 4, the exhaust gas flowing out flows toward the lower part while deodorizing, and further lowers the relative humidity to flow to the deodorizer exhaust outlet pipe 11 and from the exhaust inlet hole 12 to the deodorizer exhaust outlet pipe 11 It enters the inside and is discharged to the outside of the decomposition tank 1 through the secondary side exhaust pipe 14. Further, the decomposition residue in the treated water 3 is sent together with the treated water from the treated water passage pipe 33 into the cyclone residue separator 28, and the treated water of the specific gravity separated by the cyclone residue separator 28 has a specific gravity. Out of the take-out pipe 31, the heavy-gravity liquid feed pipe 4
After passing through 2, the residue drying and solidifying tank 38 enters into the residue drying and solidifying tank 38, which is heated by a heater 40 to be solidified and discharged. Further, when exhaust gas is introduced from the secondary exhaust pipe 14 into the exhaust heat recovery exchanger 44 that is provided so as to be immersed in the treated water 3, it contributes to the heating of the treated water 3 and the exhaust heat can be recovered. Further, the exhaust heat recovery exchanger 4 in which the exhaust gas of the secondary exhaust pipe 14 is provided on the suction side of the turbo fan 22.
Exhaust heat can be recovered even if the temperature of the air blown from the turbofan 22 is increased by feeding it to the exhaust inlet 45 side of 4 '.

[0009]

As described above, according to the present invention, the deodorized activated carbon is passed through the heating pipe of the activated deodorizing activated carbon contained in the lower half of the decomposition tank to lower the relative humidity of the exhaust gas by increasing the temperature and then the deodorizing activated carbon. Since it is sent into the interior for deodorization, the amount of water adsorbed by activated carbon is suppressed, and it is possible to prevent a rapid decrease in deodorization ability, and to maintain the deodorization ability for a long time, and it is also possible to effectively use the residual exhaust heat Is.

[Brief description of drawings]

FIG. 1 is a front view showing an example of the periphery of a decomposition tank of an underwater decomposition type garbage treatment device.

FIG. 2 is a diagram showing an example of the entire system of an underwater decomposition type garbage treatment device.

FIG. 3 is a vertical cross-sectional view showing an example of a steam separator.

FIG. 4 is a vertical sectional view showing an example of a cyclone residue separator.

[Explanation of symbols]

1 decomposition tank 2 Treated water bottom 3 treated water 4 Activated carbon for deodorization 5 Deodorizer exhaust inlet pipe 7 Heating tube 8 steam separator 11 Deodorizer exhaust outlet pipe 14 Secondary side exhaust pipe 16 heating heater 17 Bottom 18 Submersible pump for circulating water 19 Water surface 20 Circulating water injection pipe 22 turbo fan 23 Spray water 25 Raw Garbage Disposal Department 28 Cyclone residue separator 30 Low specific gravity extraction pipe 31 Gravity specific gravity extraction pipe 32 Treated water inlet pipe 38 Residue dry solidification tank 40 heating heater 43 Circulating water drop buffer plate 44 Exhaust heat recovery exchanger 46 rotating blades

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B09B 3/00 C02F 11/02

Claims (3)

(57) [Claims] 1. In an underwater decomposition type garbage treatment device using aerobic microorganisms, deodorizing activated carbon heated by a heater is placed inside the lower half of the decomposition tank located below the bottom of the treated water containing the treated water. Introduce exhaust gas from the decomposition tank into the activated carbon for deodorization and heat the heating pipe to lower the relative humidity by heating, and communicate with the heating pipe to discharge the exhaust gas with reduced relative humidity into the activated carbon for deodorization. It is characterized in that the heating activated carbon deodorizer section is formed inside the lower half of the decomposition tank by providing a pipe and a deodorizer exhaust outlet pipe through which the exhaust gas flowing out into the deodorizing activated carbon enters and discharges to the outside of the decomposition tank. Underwater decomposition type food waste treatment equipment. 2. The circulating water drop buffer plate on the surface of the treated water in the decomposition tank, the circulating water injection pipe above the circulating water drop buffer plate, and the steam separator on the ceiling of the decomposition tank are respectively disposed. A turbo fan that injects air into the spray water of the circulating water injection pipe outside the
The raw garbage feeding section for feeding the raw garbage into the decomposition tank, the cyclone residue separator for separating the processing residue, and the residue drying and solidifying tank are arranged. Underwater decomposition type garbage treatment device. 3. An exhaust heat recovery exchanger that heats the treated water by passing secondary exhaust gas from the deodorizer exhaust outlet pipe of the heated activated carbon deodorizer unit formed in the lower half of the decomposition tank to the treated water. 3. The underwater according to claim 1 or 2, wherein an exhaust heat recovery exchanger, which is disposed inside and communicates the secondary exhaust with the suction side of the turbofan and sucks the secondary exhaust, is provided on the suction side of the turbofan. Disassembly type garbage processing device.