JP2002241537A - Apparatus for waste disposal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently carry out a decomposing treatment of a waste in a short time by promoting the proliferation of microorganisms. SOLUTION: This apparatus for waste disposal has a treating tank 2 storing fermentation microorganisms and a pH regulation means 27 for promoting the proliferation of the microorganisms in the treating tank 2.

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 decomposing a waste mainly composed of a polymer material such as rubber gloves using a microorganism.

[0002]

2. Description of the Related Art Garbage such as vegetables and fish can be relatively easily decomposed by using microorganisms, as shown in, for example, Japanese Patent Application Laid-Open No. 9-174026. In the case of the rubbers described above, there is a problem that it is difficult to decompose even if the microorganisms are mixed and fermented as they are.

[0003]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to decompose waste such as rubber gloves in a shorter time and more efficiently.

[0004]

According to the present invention, there is provided a treatment tank for accommodating grown fermentation bacteria, stirring means for the fermentation bacteria provided in the treatment tank, and ph adjusting means for accelerating the growth of microorganisms. In addition to the above, the waste is put into the treatment tank, and the waste is stirred by the stirring means to perform the decomposition treatment, and the ph value is adjusted by the ph adjusting means.

The ph adjusting means adjusts the dilution rate of a solution of diluted hydrochloric acid, diluted ammonia water and distilled water according to the ph concentration.

The treatment tank is provided with a salt concentration adjusting means, and when the salt concentration in microorganisms in the treatment tank is higher than an optimum value, the concentration is adjusted by adding distilled water.

[0007]

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 forms a bottomed rectangular cylindrical processing tank 2 having a U-shaped bottom on one side. At the bottom, a bacterial bed is provided, and a storage chamber 3 is defined at the bottom on the other side, and an exhaust treatment tank 4 is defined above the storage chamber.

Reference numeral 5 denotes a stirring means mounted in the processing tank 2. A rotating shaft 7 having both ends supported in a substantially horizontal direction by a pair of bearings 6, 6 and a stirring blade 8 fixed around the rotating shaft. And a motor 11 that is installed in the storage chamber 3 and drives the rotary shaft 7 to rotate via a belt 9 and a pulley 10.

Reference numeral 12 denotes an exhaust hole opened in the upper side wall of the processing tank 2, and an exhaust hole 13 opened at the tip is provided with an exhaust duct opened in the water of the deodorized treatment water 14 stored in the exhaust processing tank 4. 15 and an exhaust fan 16 is mounted in the exhaust duct.

The treated water 14 is filled with an effective microbial complex, for example, mainly composed of aerobic Bacillus subtilis (Bacillus sp.) And blended with other bacteria for deodorization. As the malodorous substances in the exhaust gas, ammonia, methyl mercaptan, hydrogen sulfide, methyl sulfide, methyl monosulfide, trimethylamine, acetaldehyde, styrene, propionic acid, normal butyric acid, normal valeric acid, isovaleric acid, toluene, xylene, There are methyl isobutyl ketone, ethyl acetate, isobutanol, propionaldehyde, isovaleraldehyde, isobutyraldehyde, normal valeraldehyde, normal butyraldehyde, etc., and a bacterium that decomposes these is used.

A heater 17 such as a sheathed heater is buried in the outer bottom wall surface of the processing tank 2, and the temperature in the processing tank 2 is detected by a not-shown temperature sensor such as a thermistor to control the power supply. For example, aerobic Bacillus subtilis (Bacillus, Sachira spp.) For waste treatment is mainly used, and fermentation bacteria and other bacteria are blended according to the type of waste. It is configured to control heating.

Further, an exhaust fan 18 for discharging exhaust gas generated from the surface of the treated water is provided on the upper surface of the exhaust treatment tank 4 for storing the treated water 14.

Numeral 19 denotes a crushing means disposed on the upper part of the processing tank 2, and a rotary shaft 22 directly or indirectly driven by a motor 21 at a substantially central position in a cylindrical crushing chamber 20.
Are arranged substantially vertically, a large number of crushing knives 23 are arranged in a comb-like shape around the rotating shaft, and the opposing blades 24 are arranged between the crushing blades so as to face each other. 20 are pierced from the inner wall.

The upper side wall of the crushing chamber 20 has an opening 25 for charging waste, and the crushing chamber 2
A supply port 26 for dropping the crushed waste into the processing chamber 2 is perforated in the bottom surface of the container 0.

Reference numeral 27 denotes a p disposed adjacent to the crushing means 19.
A solvent supply pipe 31 for supplying the inside of the processing chamber 2 while controlling the flow rate of the diluted hydrochloric acid in the solvent tank 29 by, for example, an electromagnetic valve 30 is attached below the solvent tank 29 for storing the diluted hydrochloric acid 28 by the h adjusting means. are doing.

The solvent supply pipe 31 is provided with a nozzle (not shown) at an ejection port for ejecting the diluted hydrochloric acid, and sprays the solvent in a mist state or rotates the processing chamber 2 by a rotary nozzle (not shown).
May be configured so as to be injected substantially uniformly into the inside.

Numeral 32 denotes a solvent tank for storing diluted ammonia water 33 disposed adjacent to the solvent tank 24.
4, a solvent supply pipe 35 for supplying the inside of the processing chamber 2 while controlling the flow rate is mounted.

The bacteria liquid supply pipe 35 may be provided with a nozzle similar to the solvent supply pipe 31 so as to spray the diluted ammonia water 33 into the processing chamber 2 substantially uniformly. The electromagnetic valves 30 and 34 may be configured by a pump, a motor valve, or the like.

A solvent tank 35 is disposed adjacent to the solvent tank 32 and stores distilled water 36. The solvent supply pipe 3 supplies the solvent supply pipe 3 into the processing chamber 2 while controlling the flow rate by an electromagnetic valve 37.
8 is attached. The solvent tank 35, the distilled water 36 and the solenoid valve 37 also constitute a salt concentration adjusting means 39.

Reference numeral 40 denotes a humidity sensor disposed in proximity to the exhaust hole 12 above the processing chamber 2 for detecting the humidity of waste in the processing chamber and supplying the distilled water or the like.

Reference numeral 41 denotes a ph sensor attached to the inner wall of the processing chamber 2, and adjusts the ph adjusting means 27 so as to have a concentration suitable for the activity and propagation of microorganisms.

Here, factors for the growth (propagation) of microorganisms will be summarized.

The factors necessary for growth include temperature, oxygen, moisture, salt concentration, etc. The applicant of the present application has noticed that ph is an even larger factor, and this ph concentration depends on the type of fermentation bacterium SH2B. 8-9 bacteria proved to be optimal.

In order to maintain the ph concentration at 8 to 9, particularly, the diluted hydrochloric acid 28 and the diluted ammonia water 3 described above are used.
3, the addition of distilled water 36.

Next, the state of use will be described. A fermentation bacterium (SH2B bacterium) is propagated in advance and stored in the bottom of the treatment tank 2 to constitute a bacterial bed.

A rubber glove G, which is a waste material of a polymer material, is charged through the inlet 25, and the stirring blades 8 are rotated by the operation of the motors 11 and 21. After being pulverized by the opposed blades 24 and falling into the processing chamber 2 from the supply port 26, the fermentation bacteria are brought into contact with the fermentation bacteria while being agitated by the agitating blades 8 of the agitating means 5 and decomposed by the microorganisms.

When the crushing and disassembling processing of the rubber glove is completed, the operation of the crushing means 19 is stopped.

By the way, the microorganisms for decomposing rubber gloves need to be sufficiently active and proliferate, but when the time elapses or the total treatment time becomes long, the pH of the fermentation bacteria is increased. The value is converted.

The change at this time is detected by the ph sensor 41. If the ph is higher than the optimum value of 8 to 9, the opening time of the solenoid valve 30 is determined according to the rise value and measured by the ph sensor. Then, the diluted hydrochloric acid 28 is dropped to lower the concentration.

On the other hand, if ph is lower than the optimum value, the opening time of the solenoid valve 34 is determined according to the decrease value, and the concentration is increased by dropping the diluted ammonia water 33 while actually measuring with the ph sensor.

At the time of adjusting the pH with the diluted hydrochloric acid or the diluted ammonia water, the solenoid valve 37 is opened at the same time to drop the distilled water to reduce the concentration.

The management of the salt concentration is based on the aforementioned p
The measurement of h can be performed separately from the diluted hydrochloric acid and the diluted ammonia water, thereby preventing the salt concentration from becoming unnecessarily high and the fermentative bacteria from mutating to seawater resistant bacteria.

[0033]

As described above, according to the present invention, the ph value of the microorganism by the fermenting bacteria contained in the treatment tank is adjusted as required by the ph adjusting means. To promote the degradation and to accelerate the decomposition process.

Further, since the ph adjusting means uses diluted hydrochloric acid, diluted ammonia water and distilled water, any of them has little influence on fermentation bacteria and does not hinder the growth of microorganisms.

Further, if the salt concentration in the treatment tank becomes low, distilled water can be increased by adding salt concentration adjusting means, and the environment of microorganisms is improved to promote growth.

[Brief description of the drawings]

FIG. 1 is an overall sectional view of a waste disposal apparatus according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Apparatus main body 2 Processing tank 5 Stirring means 27 Ph adjusting means 28 Dilute hydrochloric acid 33 Dilute ammonia water 36 Distilled water 39 Salt concentration adjusting means 41 Ph sensor

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Noriaki Hirano 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Inside Sanyo Electric Co., Ltd. (72) Inventor Teruo Okuda 3-201 Minamiyoshikata, Tottori City, Tottori Sanyo Electric Tottori (72) Inventor Junnosuke Ijiri 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Sanyo Electric Co., Ltd. (72) Inventor Yasuhiro Iwamura 3-201 Minamiyoshikata, Tottori City, Tottori Sanyo Electric Tottori F term (reference) 4D004 AA07 CA04 CA15 CA19 CA35 CA48 CB04 CB13 CB28 CB32 CC07 CC12 DA01 DA02 DA06 DA20 4F301 AA03 CA09 CA22 CA33 CA51 CA71 CA72

Claims (3)

[Claims] Claims: 1. A treatment tank containing a grown fermentation bacterium,
The fermentation bacteria stirring means provided in the treatment tank, and a ph adjusting means for promoting the growth of microorganisms, while performing a decomposition treatment by throwing waste into the treatment tank and stirring by the stirring means, A waste treatment apparatus wherein a ph value is adjusted by ph adjusting means. 2. The waste treatment apparatus according to claim 1, wherein said ph adjusting means adjusts a dilution rate of a solution of diluted hydrochloric acid, diluted ammonia water, and distilled water according to a ph concentration. 3. The treatment tank is provided with a salt concentration adjusting means, and when the salt concentration of microorganisms in the treatment tank is higher than an optimum value, the concentration is adjusted by adding distilled water. A waste treatment apparatus according to claim 1.