JP3622184B2 - Deodorization decomposition method in garbage fermentation processing equipment - Google Patents

Deodorization decomposition method in garbage fermentation processing equipment Download PDF

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Publication number
JP3622184B2
JP3622184B2 JP2000301231A JP2000301231A JP3622184B2 JP 3622184 B2 JP3622184 B2 JP 3622184B2 JP 2000301231 A JP2000301231 A JP 2000301231A JP 2000301231 A JP2000301231 A JP 2000301231A JP 3622184 B2 JP3622184 B2 JP 3622184B2
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Prior art keywords
titanium oxide
garbage
oxide photocatalyst
moisture
fermentation
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JP2002066521A (en
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聰治 井田
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聰治 井田
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Description

【0001】
【産業上の利用分野】
本発明は、生ゴミ等の有機物を高温発酵菌を使用して加熱乾燥して減量処理を行う生ゴミ処理装置から発生する臭気や排気・排水中に含まれる有害物質を分解するのに好適な脱臭・分解方法に関するものである。
【0002】
【従来の技術】
近年、発酵菌を使用して家庭や工場等から排出される生ゴミを発酵処理する装置が用いられており、これに伴って生ゴミ処理装置内の発酵の課程で発生する悪臭の除去が課題になっている。従来は、生ゴミ処理装置の発酵漕に活性炭を充填した吸着塔を連設し、アンモニア、アセトアルデヒド、硫化水素等の悪臭物質を活性炭に吸着させることにより生ゴミ処理装置から発生する悪臭を除去するようにしている。しかし、活性炭の臭気吸着能力は徐々に低下するので、頻繁に交換しなければならない。更に生ゴミを高温で発酵処理させる装置での排気中には臭気成分の他にダイオキシン等の有害物質が含まれていることがあり、上記のように活性炭を使用した脱臭機構ではこれらの有害物質を吸着除去することはできず、これらの処理も問題となっている。
【発明が解決しようとする課題】
【0003】
本発明は、生ゴミ処理装置の発酵漕から発生する臭気や有害物質を含んだ蒸気中を水分と気体とに分離し、更に水分と気体中に含まれている臭気と有害物質を完全に分解して生ゴミ処理装置の外に放出しても全く問題のない脱臭分解方法を提供することを課題とするものである。
【0004】
【課題を解決するための手段】
本発明の生ゴミ処理装置に使用される脱臭分解方法は、蒸気発酵槽から排出される蒸気を、紫外線光源の周囲に形成された複数の分離室内に充填された酸化チタンを主成分として粒状に形成した酸化チタン光触媒中で循環させて蒸気中の臭気と有害物質を酸化チタン光触媒により吸着・分解すると共に気体成分と水分とに分離させ、分離された気体成分と水分とを、各々紫外線光源を取り巻いて形成した複数の分解層内に充填された酸化チタンを主成分とした粒状の酸化チタン光触媒に接触させるように循環させることにより、気体及び水分中の臭気及び有害物質を酸化チタン光触媒に吸着・分解した後に各々別の排出口から生ゴミ発酵処理装置の外に排出させるようにしたことを特徴とするものである。また、酸化チタン光触媒が、粒状の酸化珪素の外周面に酸化チタンを結合させて粒状に形成されたものであることを特徴とするものである。
【0005】
【発明の実施の形態】
以下、本発明の実施態様を図面に示す実施例に基づいて説明する。図1及び図2は本発明の脱臭分解方法を実施する脱臭分解装置を内蔵した生ゴミ処理装置1を示す概略図である。図において、ハウジング2内には投入口3から投入された生ゴミを発酵処理する発酵槽4が設けられており、この発酵槽4内には生ゴミの発酵を促進するための攪拌翼5が設置されている。攪拌翼5は発酵槽4内の軸方向に配置された回転軸の周囲に螺旋状に形成された羽根6を備えており図示しないモーター等の動力源により回転され発酵槽4内の生ゴミを攪拌して発酵処理を促進させる。
【0006】
前記攪拌翼5の駆動軸の一端側には、生ゴミとして投入された貝殻や蛎殻等の固形成分を粉砕処理するための粉砕機構7が形成されている。発酵槽4内の生ゴミの一部が発酵槽4の外側下部に形成された搬送路8に沿って搬送され粉砕機構7により粉砕されて再度発酵槽4内に戻されるように構成されている。搬送路8の内部には長手方向に沿ってスクリュー9が配置されておりスクリューコンベアを形成している。
【0007】
上記発酵槽4内には、高温発酵菌が予め入れられており、図示しない温風装置等によって層内が高温に維持されて生ゴミが発酵処理される。例えば、発酵槽4内に摂氏98度で生存可能な高度高熱菌を使用し、層内の温度を98度付近に維持させることにより、生ゴミ中に含まれている水分を水蒸気として排気させ、且つ好気性菌による生ゴミ中の有機質を炭素化し、嫌気性菌の働きを速め臭気を短時間で揮発性のアルマーに変化させることにより臭気成分を良質のものにすることができる。
【0008】
この高温発酵処理により生ゴミ中に含まれている水分は蒸発して水蒸気となって発酵槽4に形成された開口10を介して後述の脱臭分解処理装置11へ導出される。脱臭分解処理装置11は、蒸気中の水分と気体とを分離する分離部12と、気体中の臭気及び有害物質を分解する気体処理部13及び水分中の臭気と有害成分を分解処理する排水処理部14とに区分されており、それぞれ発酵槽4の背面側及び上面側に配置されている。図3に詳細に示すように、脱臭分解処理装置11は、発酵漕4の開口10に分離部12が接続され、更にこの分離部12に排気処理部13と排水処理部14が接続されている。発酵槽4から排出される蒸気は分離部12に導入されて気体成分と水分に分離され、気体成分と水分はそれぞれ排気処理部13及び排水処理部14を経由して気体成分及び水分中の臭気や有害物質が処理される。
【0009】
分離部12は、図4及び図5に示すように、大体において矩形状に形成した中空の外枠15内を複数の隔壁16で区切られた複数の分離室17が形成されており、隔壁16には交互に上方及び下方に透孔16aが形成されており、蒸気が複数の分離室17内を循環できるようにしている。外枠15の長手方向に沿って中空筒体18が前記隔壁16を貫通して配置され、中空筒体18内に紫外線光源19が収容可能とされている。中空筒体18は紫外線を透過させ得る例えば透明色のアクリル等の材料で形成され、紫外線光源19から投射される紫外線が分離室17に投射できるようにされている。外枠15の一端側に形成された蒸気の導入口20に近い分離室17の底壁21には排水口22が形成されており、蒸気が冷却されて析出した水分がこの排水口22を介して外部に排水できるようにしている。各分離室17内には粒状の酸化チタン光触媒23が充填される。水分を分離した気体成分は最後段の分離室17aの外枠壁の上部に形成された排出口24に接続された排気処理部13へ導入される。
【0010】
上記分離部12で析出した水分中の有害物質を処理するため、前記分離室17の下側に排水処理部14が設置されている。排水処理部14は図5に示すように、ほぼ矩形の外枠25の内部を隔壁26で2室27a、27bに分割し、一方の室27aには酸化チタン光触媒等の吸着分解材料を充填し、前記分離室17から析出した水分がこの吸着分解材料中を通過するようにしている。隔壁26の下部には透孔26aが形成されており吸着分解材料によって処理された水が他方の室27bに貯められるようにされている。室27bに貯められた処理後の水は排水口28から排水される。
【0011】
前記分離部12により水分を析出させた後の気体成分を処理するための排気処理部13は、円筒状に形成された複数の排気処理槽29が多段に連接されて構成されている。図6乃至図9に示すように排気処理槽29は、中空円筒状の外枠30と、該外枠30の内側に同心上に配置された中空円筒状の内枠31、両枠30,31の間に形成された環状空間を長手方向に仕切る環状隔壁32、及び、前記環状空間を円周方向に仕切っている隔壁33によって構成されている。中空円筒状の内枠31は紫外線の透過が良好な材料例えば透明のアクリル樹脂等が採用され、内枠の中心部には紫外線光源34が配置される。紫外線光源34は内枠31の両端に挿入支持される保持具35によって内枠31の中心部に保持される。
【0012】
環状隔壁32と一方の端壁36a間に形成された空間37には酸化チタン光触媒38が充填されており、環状隔壁32と他方の端壁36b間は隔壁33により仕切られた小スペースの2つの空間39a、39bが形成され、各空間39a、39bはパイプ40により外部と接続されている。前記空間37内は長手方向の大部分において前記隔壁33によって円周方向に仕切られているが、図9(c)に示すように一方の端壁36aの部分では隔壁33が存在しておらず連続した空間に形成されている。環状隔壁32には多数の小穴からなる通気口32aが形成されており、一方のパイプ40から導入され空間39aに導入された排気は、環状隔壁32の通気口32aを経て空間37に進入し空間37内の酸化チタン光触媒38の粒子と接触しながら前記一方の端壁36aの近傍で折り返し環状隔壁33の通気口32bを経て他方のパイプ40から導出されるように循環される。
【0013】
なお、この実施例で使用した酸化チタン光触媒23、38としては、粒状のシリカ(SiO2)の表面に酸化チタン(TiO2)を結合させて粒状に形成した酸化チタン光触媒を使用している。また、本実施例においては、3つの排気処理槽29を連接して使用している。即ち3つの排気処理槽29を並列に配置し、一端側のパイプ40を前述の分離部12と接続し、各廃棄処理槽29間のパイプ40は互いに連結させ、且つ他端側のパイプ40を図示しない吸引ダクト等を経て大気に接続している。
【0014】
図10及び図11は前記排気処理槽29の他の実施例を示すもので、この実施例の排気処理槽41は、同心的に配置した中空円筒状の外内枠42、43の間に形成される環状空間44内に、多数の小穴からなる通気口45を形成した2本のパイプ46を長手方向に沿って対称的に配置し、該パイプ46の一端側47を外枠の外表面に突出させて形成したものである。一方のパイプ46から導入した排気は通気口45を経て酸化チタン光触媒を充填した環状空間44内に浸出して光触媒と接触しながら他方のパイプ46の通気口45を経て排出されるようにされている。
【0015】
【発明の効果】
本発明によれば、発酵漕内で生ゴミの発酵処理を高温発酵菌により発酵分解処理する際に発生する臭気や有害成分を含んだ蒸気を、分離部12内の粒状の酸化チタン光触媒と接触させながら気体成分と水分とに分離させて、更に臭気と有害成分を含んだ気体成分を排気処理部13内の粒状の光触媒中を循環させることによって臭気と有害物質を吸着分解させ、且つ気体成分を分離した水分も排水処理部14内の酸化チタン光触媒中を経由させることによって有害物質を分解処理するものであるので、従来の活性炭を使用した脱臭装置に対して長期間安定した脱臭作用、有害物質の分解作用及び大腸菌等の殺菌の作用を維持させることが可能である。
【0016】
また、光触媒として、シリカ(SiO2)の表面に酸化チタン(TiO2)を結合させて粒状に形成した酸化チタン光触媒を使用しているので、蒸気又は気体成分及び水分が粒子の間を通過しながら酸化チタン光触媒と有効に接触させることができ、脱臭分解の効率を高めることが可能である。
【0017】
更に酸化チタン光触媒を採用しているので、臭気成分であるアンモニア、アセトアルデヒド、硫化水素等の悪臭成分を吸着分解し、更に蒸気から分離した排水中に含まれているダイオキシンやカドミウム等の有害物質も同様に酸化チタン光触媒に接触して分解され、臭気の無臭化と有害物質の無害化を長期に渡って持続させることができる。
【図面の簡単な説明】
【図1】本発明の脱臭分解装置を搭載した生ゴミ発酵処理装置の斜視図。
【図2】図1と同じ生ゴミ処理装置の縦断側面図。
【図3】本発明の脱臭分解装置の実施例を示す全体斜視図。
【図4】分離部の内部構造を示す一部破談の斜視図。
【図5】図4と同じ分離部と排水処理部の断面図。
【図6】排気処理部の内部構造を示す斜視図。
【図7】図6と同じ排気処理部の縦断正面図。
【図8】図6と同じ排気処理部の横断平面図。
【図9】図6におけるA−A線、B−B線、及びC−C線での断面図。
【図10】排気処理部の他の実施例を示す縦断正面図。
【図11】図10のD−D線での断面図。
【符号の説明】
1 生ゴミ処理装置
11 脱臭分解処理装置
12 分離部
13 排気処理部
14 排水処理部
15 外枠
17 分離室
18 中空筒体
19、34 紫外線光源
23、38 酸化チタン光触媒
29 排気処理槽
30 外枠
31 内枠
[0001]
[Industrial application fields]
INDUSTRIAL APPLICABILITY The present invention is suitable for decomposing odors and harmful substances contained in exhaust and waste water generated from a garbage processing apparatus that performs drying treatment by heating and drying organic matter such as garbage. It relates to deodorizing and decomposing methods.
[0002]
[Prior art]
In recent years, devices that fermented raw garbage discharged from homes and factories using fermentative bacteria have been used, and accompanying this, there is a problem in removing malodors generated during the fermentation process in the garbage processing device It has become. Conventionally, an adsorption tower filled with activated carbon is connected to the fermented lees of the garbage disposal device, and the malodor generated from the garbage treatment device is removed by adsorbing malodorous substances such as ammonia, acetaldehyde, hydrogen sulfide and the like to the activated carbon. I am doing so. However, the odor adsorption capacity of activated carbon gradually decreases and must be replaced frequently. In addition, the exhaust from the apparatus that ferments raw garbage at high temperatures may contain harmful substances such as dioxins in addition to odorous components. As described above, these harmful substances are used in the deodorizing mechanism using activated carbon. Cannot be removed by adsorption, and these processes are also problematic.
[Problems to be solved by the invention]
[0003]
The present invention separates the steam containing odors and harmful substances generated from the fermented lees of the garbage processing apparatus into moisture and gas, and further completely decomposes the odors and harmful substances contained in the moisture and gas. Thus, it is an object of the present invention to provide a deodorizing and decomposing method having no problem at all even if it is discharged out of the garbage processing apparatus.
[0004]
[Means for Solving the Problems]
The deodorizing and decomposing method used in the garbage processing apparatus of the present invention is a method in which steam discharged from a steam fermenter is granulated mainly with titanium oxide filled in a plurality of separation chambers formed around an ultraviolet light source. It circulates in the formed titanium oxide photocatalyst to adsorb and decompose odors and harmful substances in the vapor with the titanium oxide photocatalyst and separate it into gas component and moisture, and separates the separated gas component and moisture with ultraviolet light source respectively. Adsorbs odors and harmful substances in gas and moisture to the titanium oxide photocatalyst by circulating it in contact with the granular titanium oxide photocatalyst mainly composed of titanium oxide filled in multiple cracked layers. -After disassembling, it is made to discharge | emit out of a garbage fermentation processing apparatus from each separate discharge port, It is characterized by the above-mentioned. Further, the titanium oxide photocatalyst is characterized in that it is formed in a granular form by bonding titanium oxide to the outer peripheral surface of granular silicon oxide.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described based on examples shown in the drawings. FIG.1 and FIG.2 is schematic which shows the garbage processing apparatus 1 incorporating the deodorizing and decomposing apparatus which implements the deodorizing and decomposing method of this invention. In the figure, a fermenter 4 for fermenting raw garbage introduced from an inlet 3 is provided in the housing 2, and a stirring blade 5 for promoting fermentation of raw garbage is provided in the fermenter 4. is set up. The stirring blade 5 includes blades 6 formed in a spiral shape around a rotation shaft disposed in the axial direction in the fermenter 4, and is rotated by a power source such as a motor (not shown) to remove raw garbage in the fermenter 4. Stir to accelerate the fermentation process.
[0006]
A crushing mechanism 7 for crushing solid components such as shells and rice husks thrown in as raw garbage is formed on one end side of the drive shaft of the stirring blade 5. A part of the garbage in the fermenter 4 is transported along a transport path 8 formed in the lower outer portion of the fermenter 4, pulverized by the pulverization mechanism 7, and returned to the fermenter 4 again. . Screws 9 are arranged along the longitudinal direction inside the conveyance path 8 to form a screw conveyor.
[0007]
In the fermenter 4, high-temperature fermenting bacteria are put in advance, and the inside of the layer is maintained at a high temperature by a hot air device (not shown) or the like, and the raw garbage is subjected to fermentation treatment. For example, by using highly hyperthermic bacteria that can survive at 98 degrees Celsius in the fermenter 4 and maintaining the temperature in the bed at around 98 degrees, the moisture contained in the garbage is exhausted as water vapor, Moreover, the organic matter in the garbage by aerobic bacteria can be carbonized, the action of the anaerobic bacteria can be accelerated, and the odor can be changed to volatile almer in a short time, so that the odor component can be improved.
[0008]
The moisture contained in the garbage by this high-temperature fermentation treatment evaporates into water vapor and is led to the deodorizing and decomposing treatment apparatus 11 described later through the opening 10 formed in the fermentation tank 4. The deodorizing and decomposing apparatus 11 includes a separation unit 12 that separates moisture and gas in steam, a gas processing unit 13 that decomposes odors and harmful substances in gas, and a wastewater treatment that decomposes odors and harmful components in moisture. The fermenter 4 is arranged on the back side and the top side, respectively. As shown in detail in FIG. 3, in the deodorizing and decomposing apparatus 11, a separation unit 12 is connected to the opening 10 of the fermenter 4, and an exhaust treatment unit 13 and a wastewater treatment unit 14 are further connected to the separation unit 12. . The steam discharged from the fermenter 4 is introduced into the separation unit 12 to be separated into a gas component and moisture, and the gas component and moisture pass through the exhaust treatment unit 13 and the waste water treatment unit 14, respectively, and the odor in the gas component and moisture. And harmful substances are treated.
[0009]
As shown in FIGS. 4 and 5, the separation unit 12 is formed with a plurality of separation chambers 17 in which a hollow outer frame 15 formed in a generally rectangular shape is partitioned by a plurality of partition walls 16. The through holes 16a are alternately formed in the upper and lower portions so that the steam can circulate in the plurality of separation chambers 17. A hollow cylinder 18 is disposed through the partition 16 along the longitudinal direction of the outer frame 15, and an ultraviolet light source 19 can be accommodated in the hollow cylinder 18. The hollow cylinder 18 is made of a material such as transparent acrylic that can transmit ultraviolet rays, and the ultraviolet rays projected from the ultraviolet light source 19 can be projected to the separation chamber 17. A drain port 22 is formed in the bottom wall 21 of the separation chamber 17 near the steam inlet 20 formed on one end side of the outer frame 15, and moisture deposited by cooling the steam passes through the drain port 22. So that it can be drained to the outside. Each separation chamber 17 is filled with granular titanium oxide photocatalyst 23. The gas component from which moisture has been separated is introduced into the exhaust treatment unit 13 connected to the discharge port 24 formed in the upper part of the outer frame wall of the separation chamber 17a at the last stage.
[0010]
In order to treat harmful substances in the water deposited in the separation unit 12, a waste water treatment unit 14 is installed below the separation chamber 17. As shown in FIG. 5, the waste water treatment unit 14 divides the inside of a substantially rectangular outer frame 25 into two chambers 27a and 27b by a partition wall 26, and one chamber 27a is filled with an adsorption decomposition material such as a titanium oxide photocatalyst. The water deposited from the separation chamber 17 passes through the adsorptive decomposition material. A through hole 26a is formed in the lower part of the partition wall 26 so that water treated with the adsorptive decomposition material is stored in the other chamber 27b. The treated water stored in the chamber 27 b is drained from the drain port 28.
[0011]
The exhaust processing unit 13 for processing the gas component after water is deposited by the separation unit 12 is configured by connecting a plurality of exhaust processing tanks 29 formed in a cylindrical shape in multiple stages. As shown in FIGS. 6 to 9, the exhaust treatment tank 29 includes a hollow cylindrical outer frame 30, a hollow cylindrical inner frame 31 concentrically disposed inside the outer frame 30, and both frames 30, 31. An annular partition wall 32 that partitions the annular space formed in the longitudinal direction, and a partition wall 33 that partitions the annular space in the circumferential direction. The hollow cylindrical inner frame 31 is made of a material having good ultraviolet transmission, such as a transparent acrylic resin, and an ultraviolet light source 34 is disposed at the center of the inner frame. The ultraviolet light source 34 is held at the center of the inner frame 31 by a holder 35 inserted and supported at both ends of the inner frame 31.
[0012]
A space 37 formed between the annular partition wall 32 and the one end wall 36 a is filled with a titanium oxide photocatalyst 38, and the space between the annular partition wall 32 and the other end wall 36 b is divided into two small spaces partitioned by the partition wall 33. Spaces 39 a and 39 b are formed, and the spaces 39 a and 39 b are connected to the outside by a pipe 40. The space 37 is partitioned in the circumferential direction by the partition wall 33 in most of the longitudinal direction, but the partition wall 33 does not exist in one end wall 36a as shown in FIG. 9C. It is formed in a continuous space. The annular partition wall 32 is formed with a large number of small holes 32a. The exhaust gas introduced from one pipe 40 and introduced into the space 39a enters the space 37 through the annular partition wall 32a. While being in contact with the particles of the titanium oxide photocatalyst 38 in 37, it is circulated so as to be led out from the other pipe 40 through the vent 32 b of the folded annular partition wall 33 in the vicinity of the one end wall 36 a.
[0013]
In addition, as the titanium oxide photocatalysts 23 and 38 used in this Example, titanium oxide photocatalysts formed by combining titanium oxide (TiO2) on the surface of granular silica (SiO2) are used. In this embodiment, three exhaust treatment tanks 29 are connected and used. That is, three exhaust treatment tanks 29 are arranged in parallel, the pipe 40 on one end side is connected to the above-described separation part 12, the pipes 40 between the respective waste treatment tanks 29 are connected to each other, and the pipe 40 on the other end side is connected. It is connected to the atmosphere via a suction duct (not shown).
[0014]
10 and 11 show another embodiment of the exhaust treatment tank 29. The exhaust treatment tank 41 of this embodiment is formed between concentrically arranged hollow cylindrical outer inner frames 42 and 43. FIG. In the annular space 44, two pipes 46 in which vent holes 45 made up of a plurality of small holes are formed are symmetrically arranged along the longitudinal direction, and one end side 47 of the pipes 46 is arranged on the outer surface of the outer frame. It is formed by protruding. Exhaust gas introduced from one pipe 46 leaks into the annular space 44 filled with the titanium oxide photocatalyst through the vent 45 and is discharged through the vent 45 of the other pipe 46 while contacting the photocatalyst. Yes.
[0015]
【The invention's effect】
According to the present invention, the steam containing the odor and harmful components generated when the fermentation treatment of garbage is fermented and decomposed with high-temperature fermenting bacteria in the fermenter is brought into contact with the granular titanium oxide photocatalyst in the separation unit 12. Gas component and moisture are separated while being further circulated through the granular photocatalyst in the exhaust treatment unit 13 to odor and harmful substances, and gas components containing odors and harmful components are adsorbed and decomposed. Since the moisture separated is decomposed by passing through the titanium oxide photocatalyst in the waste water treatment section 14, the deodorizing device using the activated carbon is stable for a long period of time and harmful. It is possible to maintain the action of decomposing substances and the action of sterilizing E. coli and the like.
[0016]
In addition, as a photocatalyst, a titanium oxide photocatalyst formed by combining titanium oxide (TiO2) on the surface of silica (SiO2) in a granular form is used, so that vapor or gas components and moisture pass between the particles and oxidize. The titanium photocatalyst can be effectively contacted, and the efficiency of deodorization and decomposition can be increased.
[0017]
Furthermore, because it uses a titanium oxide photocatalyst, it absorbs and decomposes malodorous components such as ammonia, acetaldehyde and hydrogen sulfide, which are odor components, and also contains harmful substances such as dioxin and cadmium contained in the wastewater separated from the vapor. Similarly, it is decomposed in contact with the titanium oxide photocatalyst, and the odor-free bromide and the detoxification of harmful substances can be sustained over a long period of time.
[Brief description of the drawings]
FIG. 1 is a perspective view of a garbage fermentation treatment apparatus equipped with a deodorizing and decomposing apparatus of the present invention.
FIG. 2 is a vertical side view of the same garbage disposal apparatus as FIG.
FIG. 3 is an overall perspective view showing an embodiment of the deodorizing and decomposing apparatus of the present invention.
FIG. 4 is a partially broken perspective view showing an internal structure of a separation unit.
FIG. 5 is a cross-sectional view of the same separation unit and waste water treatment unit as in FIG.
FIG. 6 is a perspective view showing an internal structure of an exhaust processing unit.
7 is a longitudinal front view of the same exhaust processing section as FIG. 6. FIG.
8 is a cross-sectional plan view of the same exhaust processing unit as FIG. 6. FIG.
9 is a cross-sectional view taken along lines AA, BB, and CC in FIG. 6;
FIG. 10 is a longitudinal front view showing another embodiment of the exhaust treatment unit.
11 is a cross-sectional view taken along the line DD of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Garbage processing apparatus 11 Deodorization decomposition processing apparatus 12 Separation part 13 Exhaust treatment part 14 Waste water treatment part 15 Outer frame 17 Separation chamber 18 Hollow cylinder 19, 34 Ultraviolet light source 23, 38 Titanium oxide photocatalyst 29 Exhaust treatment tank 30 Outer frame 31 The inner frame

Claims (2)

高温発酵菌の使用により発酵槽内で高温度で生ゴミ等の発酵を促進させるようにした生ゴミ発酵処理装置において、蒸気発酵槽から排出される蒸気を、紫外線光源の周囲に形成された複数の分離室内に充填された酸化チタンを主成分として粒状に形成した酸化チタン光触媒中で循環させて蒸気中の臭気と有害物質を酸化チタン光触媒により吸着・分解すると共に気体成分と水分とに分離させ、分離された気体成分と水分とを、各々紫外線光源を取り巻いて形成した複数の分解層内に充填された酸化チタンを主成分とした粒状の酸化チタン光触媒に接触させるように循環させることにより、気体及び水分中の臭気及び有害物質を酸化チタン光触媒に吸着分解した後に各々別の排出口から生ゴミ発酵処理装置の外に排出させるようにしたことを特徴とする生ゴミ発酵処理装置等における脱臭分解方法。In the raw garbage fermentation treatment equipment that promotes fermentation of raw garbage etc. at high temperature in the fermenter by using high-temperature fermenting bacteria, the steam discharged from the steam fermenter is formed around the ultraviolet light source. It circulates in a titanium oxide photocatalyst formed mainly in the form of titanium oxide filled in the separation chamber to adsorb and decompose the odor and harmful substances in the vapor with the titanium oxide photocatalyst and separate it into gas components and moisture. By circulating the separated gas component and moisture so as to be in contact with a granular titanium oxide photocatalyst mainly composed of titanium oxide filled in a plurality of decomposition layers each surrounded by an ultraviolet light source, The odor and harmful substances in gas and water are adsorbed and decomposed to the titanium oxide photocatalyst and then discharged from the separate fermentation outlet to the outside of the fermentation processing equipment. Deodorization decomposition method in garbage fermentation treatment apparatus or the like to. 前記酸化チタン光触媒が、粒状の酸化珪素の外周面に酸化チタンを結合させて粒状に形成されたものであることを特徴とする請求項1の生ゴミ発酵処理装置における脱臭分解方法。2. The deodorizing and decomposing method in a garbage fermentation treatment apparatus according to claim 1, wherein the titanium oxide photocatalyst is formed in a granular form by binding titanium oxide to an outer peripheral surface of granular silicon oxide.
JP2000301231A 2000-08-26 2000-08-26 Deodorization decomposition method in garbage fermentation processing equipment Expired - Fee Related JP3622184B2 (en)

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