JP2003327487A - Apparatus for manufacturing matured compost-like material - Google Patents
Apparatus for manufacturing matured compost-like materialInfo
- Publication number
- JP2003327487A JP2003327487A JP2002132939A JP2002132939A JP2003327487A JP 2003327487 A JP2003327487 A JP 2003327487A JP 2002132939 A JP2002132939 A JP 2002132939A JP 2002132939 A JP2002132939 A JP 2002132939A JP 2003327487 A JP2003327487 A JP 2003327487A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- deodorizing device
- deodorizing
- flow path
- producing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
Landscapes
- Incineration Of Waste (AREA)
- Treating Waste Gases (AREA)
- Treatment Of Sludge (AREA)
- Fertilizers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、生物処理汚泥等の
有機性廃棄物を処理して熟成コンポストに類似した悪臭
の無い製品を短時間で製造する装置に係り、特に、熟成
コンポスト様物の製造工程から排出される排ガス処理を
合理化することにより、排ガス処理コストの低減を図る
熟成コンポスト様物の製造装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for treating organic waste such as biologically treated sludge in a short time to produce a product having no bad odor similar to aged compost, and particularly to an aged compost-like product. The present invention relates to an apparatus for producing an aged compost-like object, which is intended to reduce exhaust gas treatment cost by rationalizing the treatment of exhaust gas emitted from the production process.
【０００２】[0002]
【従来の技術】生物処理汚泥等の有機性廃棄物から熟成
コンポストに類似した悪臭の無い製品を比較的低い処理
温度と短い時間で低コストにて効率的に製造する技術と
して、特開２００１−１３０９９０には、生物処理汚泥
を加熱乾燥した後、１００〜２００℃で熱分解処理して
熟成コンポスト様物を製造する方法及び装置が記載され
ている。2. Description of the Related Art As a technique for efficiently producing an odor-free product similar to aged compost from organic waste such as biologically treated sludge at a relatively low treatment temperature and a short time at low cost, Japanese Patent Application Laid-Open No. 2001-2001 130990 describes a method and an apparatus for producing an aged compost-like substance by heat-drying biologically treated sludge and then thermally decomposing at 100 to 200 ° C.
【０００３】この方法及び装置であれば、生物処理汚泥
を加熱乾燥し、１００〜２００℃という比較的低い温度
での加熱を継続することにより、１０〜２０時間程度の
短時間の処理で、悪臭がなく、しかも、有機肥料分も十
分に残留している上に塩分もさほど高くなく、有機肥料
として有効な熟成コンポスト類似の製品を得ることがで
きる。According to this method and apparatus, by heating and drying the biologically treated sludge and continuing the heating at a relatively low temperature of 100 to 200 ° C., a bad odor can be obtained by a short time treatment of about 10 to 20 hours. In addition, the organic fertilizer content is sufficient, and the salt content is not so high, and a product similar to aged compost that is effective as an organic fertilizer can be obtained.
【０００４】この方法及び装置で熟成コンポスト様物を
製造する場合、原料の加熱を行う処理槽からは、アンモ
ニアやメチルメルカプタン、硫化水素、硫化メチルなど
の各種の臭気成分や粉塵などを含む排ガスが排出される
ので、この排ガスを除塵処理した後、燃焼により脱臭処
理することが行われている。In the case of producing an aged compost-like substance by this method and apparatus, exhaust gas containing various odorous components such as ammonia, methyl mercaptan, hydrogen sulfide, methyl sulfide and dust is discharged from the treatment tank for heating the raw material. Since the exhaust gas is discharged, dust is removed from the exhaust gas and then deodorized by combustion.
【０００５】[0005]
【発明が解決しようとする課題】熟成コンポスト様物の
製造工程で排出される排ガスは、粉塵と各種の臭気成分
を含むものであるが、原料中の水分蒸発を主とする乾燥
工程と、水分蒸発後の原料の昇温を主とする熱分解工程
とでは、処理槽から排出される排ガス量及び排ガスの組
成（臭気成分濃度）は大きく異なる。Exhaust gas discharged in the process of producing an aged compost-like substance contains dust and various odorous components, but the drying process mainly involves evaporation of water in the raw material and the post-evaporation process. The amount of the exhaust gas discharged from the treatment tank and the composition of the exhaust gas (odor component concentration) are greatly different from those in the thermal decomposition step mainly for raising the temperature of the raw material.
【０００６】即ち、水分蒸発を主とする乾燥工程の排ガ
ス量は多く、排ガス成分は水分（水蒸気）を主体とし、
臭気成分濃度は比較的低い。これに対して、水分蒸発後
の原料の昇温を主とする熱分解工程の排ガス量は少な
く、排ガス中に水分は殆ど含まれておらず、臭気成分濃
度は高く、粉塵含有量も多い。That is, the amount of exhaust gas in the drying process, which is mainly water vaporization, is large, and the exhaust gas component is mainly water (steam),
The odorous component concentration is relatively low. On the other hand, the amount of exhaust gas in the thermal decomposition process mainly for raising the temperature of the raw material after evaporation of water is small, the exhaust gas contains almost no water, the odor component concentration is high, and the dust content is high.
【０００７】従来技術では、このような排ガスを同一系
列の脱臭処理設備で処理しているために、大量の排ガス
量と高濃度の臭気成分に対応した脱臭設備とならざるを
得ない。そのため、排ガスの除塵処理及び脱臭処理用の
脱臭設備は相当に大型で高額なものとなり、また、その
運転コストも高く、このことが有機性廃棄物の処理コス
トを高くする一因となっている。In the prior art, since such exhaust gas is treated by the same series of deodorizing treatment equipment, the deodorizing equipment must cope with a large amount of exhaust gas and a high-concentration odor component. Therefore, the deodorizing equipment for dedusting and deodorizing exhaust gas is considerably large and expensive, and its operating cost is high, which is one of the reasons for increasing the processing cost of organic waste. .
【０００８】本発明は、上記従来の問題点を解決し、有
機性廃棄物を加熱することにより熟成コンポスト様物を
製造する装置において、発生する排ガスの処理を合理化
することにより、排ガス処理コストを低減し、これによ
り有機性廃棄物の処理コストを低減する熟成コンポスト
様物の製造装置を提供することを目的とする。The present invention solves the above-mentioned conventional problems, and in an apparatus for producing an aged compost-like substance by heating an organic waste, the exhaust gas treatment cost is reduced by rationalizing the treatment of the generated exhaust gas. It is an object of the present invention to provide an apparatus for producing an aged compost-like product, which reduces the cost and thereby the processing cost of organic waste.
【０００９】[0009]
【課題を解決するための手段】本発明の熟成コンポスト
様物の製造装置は、内部に投入された原料を加熱する処
理槽と、該処理槽から排出される排ガスを脱臭する脱臭
装置とを備えた熟成コンポスト様物の製造装置におい
て、前記脱臭装置として、高濃度排ガス用の第１脱臭装
置と、中・低濃度排ガス用の第２脱臭装置とが設けられ
ており、前記処理槽からの排ガスを該第１脱臭装置に導
く第１流路と該第２脱臭装置に導く第２流路とが設けら
れており、前記処理槽からの排ガスを該第１流路と第２
流路とのいずれかに導くように流路を切り替える切替手
段が設けられていることを特徴とする。An apparatus for producing an aged compost-like product according to the present invention comprises a treatment tank for heating a raw material charged therein, and a deodorizing device for deodorizing exhaust gas discharged from the treatment tank. In the apparatus for producing an aged compost-like material, as the deodorizing device, a first deodorizing device for high-concentration exhaust gas and a second deodorizing device for medium / low-concentration exhaust gas are provided. Is provided to the first deodorizing device and a second flow passage to guiding the second deodorizing device, and exhaust gas from the treatment tank is supplied to the first flow channel and the second flow channel.
It is characterized in that switching means for switching the flow path is provided so as to lead to either the flow path or the flow path.
【００１０】熟成コンポスト様物の製造装置では、生物
処理汚泥等の原料を加熱し、この加熱により原料中の水
分が徐々に蒸発し、含有率が１％未満となって乾燥が完
了した後も、更に好ましくは１００〜２００℃の温度で
加熱を継続すると、水分は完全に蒸発除去され、臭気成
分も揮散、分解される一方で、有機物は炭化せず、良好
な熟成コンポスト様物を得ることができる。原料の加熱
乾燥で水分が蒸発する過程において、水分が残留してい
る間は、処理中の原料の温度は１００℃未満であるが、
水分が完全に蒸発除去された後も加熱を継続すると、被
処理物の温度は１００℃以上に上昇する。この状態で被
処理物を所定時間維持すると、被処理物中の有機物量が
減少し始め、有機物が３〜５０％程度減少するまで加熱
を継続すると臭気の殆どない熟成コンポスト様物を得る
ことができる。In an apparatus for producing an aged compost-like material, a raw material such as biologically treated sludge is heated, and the moisture in the raw material is gradually evaporated by this heating, the content rate becomes less than 1%, and the drying is completed. More preferably, when heating is continued at a temperature of 100 to 200 ° C., water is completely evaporated and removed, and odorous components are also volatilized and decomposed, while organic matter is not carbonized and a good aged compost-like product is obtained. You can In the process of evaporation of water by heating and drying the raw material, the temperature of the raw material during the treatment is less than 100 ° C. while the water remains.
If heating is continued even after the moisture is completely evaporated and removed, the temperature of the object to be treated rises to 100 ° C or higher. If the material to be treated is maintained for a predetermined time in this state, the amount of organic matter in the material to be treated begins to decrease, and if the heating is continued until the organic matter decreases by about 3 to 50%, an aged compost-like substance with almost no odor can be obtained. it can.
【００１１】上記乾燥工程は通常１０〜１５時間程度要
し、この乾燥工程の排ガス量は多くかつ排ガス中の臭気
成分濃度は低い。一方、その後の熱分解工程は通常３〜
５時間程度であり、この熱分解工程の排ガス量は少な
く、かつ排ガス中の臭気成分濃度は高い。The above drying step usually requires about 10 to 15 hours, the amount of exhaust gas in this drying step is large, and the concentration of odorous components in the exhaust gas is low. On the other hand, the subsequent thermal decomposition step is usually 3 to
It takes about 5 hours, the amount of exhaust gas in this thermal decomposition step is small, and the odorous component concentration in the exhaust gas is high.
【００１２】乾燥工程で排出される臭気成分濃度の低い
排ガスは、生物脱臭、水洗脱臭、薬洗脱臭、活性炭脱臭
等の運転コストの低い中・低濃度排ガス用脱臭装置（第
２脱臭装置）で処理する。この乾燥工程では、原料の乾
燥処理で発生する大量の水蒸気を系外に排出するために
大量の排ガスを排気する必要がある。Exhaust gas with a low concentration of odorous components discharged in the drying process is treated by a deodorizing device (second deodorizing device) for medium / low concentration exhaust gas with low operating costs such as biological deodorization, water deodorization, chemical deodorization and activated carbon deodorization. To process. In this drying step, it is necessary to exhaust a large amount of exhaust gas in order to discharge a large amount of water vapor generated in the drying process of the raw material to the outside of the system.
【００１３】一方、熱分解工程の排ガスは、高濃度の臭
気成分のみならず粉塵を含むため、集塵装置で処理した
後、運転コストの高い燃焼式脱臭装置等の高濃度排ガス
用脱臭装置（第１脱臭装置）で処理する。この排ガス量
は、乾燥工程の排ガス量の約１／１０程度あるいはそれ
以下である。On the other hand, since the exhaust gas in the thermal decomposition step contains not only high-concentration odorous components but also dust, it is treated with a dust collector, and then a deodorizing device for high-concentration exhaust gas such as a combustion-type deodorizing device with high operating cost ( The first deodorizing device). This exhaust gas amount is about 1/10 or less of the exhaust gas amount in the drying process.
【００１４】本発明では、処理槽からの排ガスの流路を
切り替えることにより、乾燥工程の排ガスは、中・低濃
度排ガス用脱臭装置（第２脱臭装置）で処理し、熱分解
工程の排ガスは、高濃度排ガス用脱臭装置（第１脱臭装
置）で処理する。In the present invention, by switching the flow path of the exhaust gas from the treatment tank, the exhaust gas of the drying process is treated by the deodorizing device for the medium / low concentration exhaust gas (second deodorizing device), and the exhaust gas of the thermal decomposition process is changed. , A high-concentration exhaust gas deodorizing device (first deodorizing device).
【００１５】乾燥工程は処理時間が長く、排ガス量も多
いが、中・低濃度排ガス用脱臭装置は運転コストが低い
ため、排ガス処理コストを抑えることができる。一方、
高濃度排ガス用脱臭装置は運転コストが高いが、熱分解
工程の排ガス量が少なく、しかも処理時間が短いため、
排ガス処理コストを抑えることができる。The drying step takes a long treatment time and a large amount of exhaust gas, but the operating cost of the deodorizing device for medium / low concentration exhaust gas is low, so that the exhaust gas processing cost can be suppressed. on the other hand,
Although the deodorizing device for high-concentration exhaust gas has a high operating cost, the amount of exhaust gas in the thermal decomposition process is small and the processing time is short, so
The exhaust gas treatment cost can be suppressed.
【００１６】このように、高濃度排ガス用脱臭装置と中
・低濃度排ガス用脱臭装置とを設け、これらの脱臭装置
に、乾燥工程と熱分解工程とで切り替えて排ガスを送給
することにより、全体として排ガス処理コストを大幅に
低減することができる。As described above, by providing the high-concentration exhaust gas deodorizing device and the medium / low-concentration exhaust gas deodorizing device, and supplying the exhaust gas to these deodorizing devices by switching between the drying process and the thermal decomposition process, As a whole, the exhaust gas treatment cost can be significantly reduced.
【００１７】[0017]
【発明の実施の形態】以下に図面を参照して本発明の熟
成コンポスト様物の製造装置の実施の形態を詳細に説明
する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of an apparatus for producing an aged compost-like object according to the present invention will be described in detail below with reference to the drawings.
【００１８】図１は本発明の熟成コンポスト様物の製造
装置の実施の形態を示す系統図である。FIG. 1 is a system diagram showing an embodiment of an apparatus for producing an aged compost-like material according to the present invention.
【００１９】図１の熟成コンポスト様物の製造装置は、
排ガスの脱臭装置として、高濃度排ガス用の第１脱臭装
置と中・低濃度排ガス用脱臭装置用の第２脱臭装置とを
設け、排ガス流路を切り替えることにより乾燥工程の排
ガスは第２脱臭装置で処理し、熱分解工程の排ガスは第
１脱臭装置で処理するようにしたものである。The apparatus for producing an aged compost-like product shown in FIG.
As a deodorizing device for exhaust gas, a first deodorizing device for high-concentration exhaust gas and a second deodorizing device for medium- and low-concentration exhaust gas are provided, and the exhaust gas in the drying process is changed to a second deodorizing device by switching the exhaust gas passage. The exhaust gas from the thermal decomposition step is treated by the first deodorizing device.
【００２０】図１において、１は原料を加熱処理するた
めの処理槽であり、原料投入口２、製品排出口３、吸気
口４と排気口５が設けられている。In FIG. 1, reference numeral 1 denotes a processing tank for heat-treating a raw material, which is provided with a raw material inlet 2, a product outlet 3, an inlet 4 and an outlet 5.
【００２１】乾燥工程においては、バルブＶ２を開とす
ると共に、第２ファンＦ２を作動させて、処理槽１の排
ガスを排気口５から共用流路１０及び第２流路１２を経
て第２脱臭装置８に導入して脱臭処理した後、排気す
る。この乾燥工程においては大量の排ガスを処理するた
め、第２ファンＦ２としては大容量用ファンを用いる。
また、乾燥工程の排ガスは、水蒸気を主体とし、臭気成
分濃度は比較的低いため、第２脱臭装置８としては、生
物脱臭、水洗脱臭、薬洗脱臭、活性炭脱臭等の安価な脱
臭装置を用いることができる。In the drying step, the valve V 2 is opened and the second fan F 2 is operated so that the exhaust gas of the processing tank 1 is discharged from the exhaust port 5 through the common flow path 10 and the second flow path 12 to the first flow path. 2 After being introduced into the deodorizing device 8 for deodorizing treatment, it is exhausted. Since a large amount of exhaust gas is treated in this drying step, a large capacity fan is used as the second fan F 2 .
In addition, since the exhaust gas in the drying process is mainly composed of water vapor and has a relatively low odor component concentration, an inexpensive deodorizing device such as biological deodorizing device, water washing deodorizing device, chemical washing deodorizing device, activated carbon deodorizing device is used as the second deodorizing device 8. be able to.
【００２２】熱分解工程においては、バルブＶ１を開と
すると共に、第１ファンＦ１を作動させて、処理槽１の
排ガスを排気口５から共用流路１０及び第１流路１１を
経て湿式集塵機等の集塵機６で除塵処理し、その後、第
２脱臭装置７に導入して脱臭処理した後、排気する。こ
の熱分解工程における排ガス量は少ないため、第１ファ
ンＦ１としては小容量用ファンを用いることができる。
また、熱分解工程の排ガスは、粉塵を含むため集塵機６
で除塵する必要があり、また、アンモニア、メチルメル
カプタン、硫化水素、硫化メチル等の臭気成分濃度が高
いため、第１脱臭装置７としては、燃焼式脱臭装置等の
高濃度排ガス用脱臭装置を用いる。なお、第１脱臭装置
７の高濃度排ガス用脱臭装置としては、燃焼式脱臭装置
に何ら限定されず、その他、触媒式脱臭装置を使用する
こともできる。In the thermal decomposition step, the valve V 1 is opened and the first fan F 1 is operated so that the exhaust gas of the treatment tank 1 is discharged from the exhaust port 5 through the common flow channel 10 and the first flow channel 11. The dust collector 6 such as a wet dust collector removes dust, and then the dust collector 6 is introduced into the second deodorizing device 7 to perform deodorizing treatment, and then exhausted. Since the amount of exhaust gas in this thermal decomposition step is small, a small capacity fan can be used as the first fan F 1 .
Further, since the exhaust gas of the thermal decomposition process contains dust, the dust collector 6
Since it is necessary to remove dust and the concentration of odorous components such as ammonia, methyl mercaptan, hydrogen sulfide, and methyl sulfide is high, a high-concentration exhaust gas deodorizing device such as a combustion deodorizing device is used as the first deodorizing device 7. . The deodorizing device for the high-concentration exhaust gas of the first deodorizing device 7 is not limited to the combustion type deodorizing device, and a catalytic deodorizing device may be used.
【００２３】触媒式脱臭装置は、酸化還元触媒を充填し
た触媒塔に、除塵された排ガスを通気して臭気成分を分
解除去するものであり、触媒としては、白金、銅、クロ
ムなど、好ましくは白金が用いられる。これらの触媒
は、γ−アルミナ、酸化チタン、セラミックなどの担体
に担持されていてもよい。この触媒塔は、２５０〜３５
０℃程度に加温すると、反応が速く進行し、好ましい。The catalytic deodorizer is a device for decomposing and removing odorous components by ventilating dust-removed exhaust gas through a catalyst tower filled with a redox catalyst, and the catalyst is preferably platinum, copper, chromium or the like. Platinum is used. These catalysts may be supported on a carrier such as γ-alumina, titanium oxide, or ceramic. This catalyst tower is 250-35
Heating to about 0 ° C. is preferable because the reaction proceeds rapidly.
【００２４】図１の熟成コンポスト様物の製造装置で
は、乾燥工程の排ガスと熱分解工程の排ガスとの流路の
切り替えをタイマー２０により行う。即ち、乾燥工程に
おいては、タイマー２０によりバルブＶ２を開、バルブ
Ｖ１を閉とすると共に、第１ファンＦ１停止のまま、第
２ファンＦ２を作動させて、処理槽１の排ガスを第２流
路１２から第２脱臭装置８に導く。In the apparatus for producing an aged compost-like product shown in FIG. 1, the timer 20 switches the flow path between the exhaust gas in the drying process and the exhaust gas in the thermal decomposition process. That is, in the drying process, the valve V 2 is opened and the valve V 1 is closed by the timer 20, and the second fan F 2 is operated while the first fan F 1 is stopped to remove the exhaust gas from the treatment tank 1. The second flow path 12 leads to the second deodorizing device 8.
【００２５】熱分解工程においては、タイマー２０によ
りバルブＶ１を開、バルブＶ２を閉とすると共に、第２
ファンＦ２を停止させ、第１ファンＦ１を作動させて、
処理槽１の排ガスを第１流路１１から集塵機６及び第１
脱臭装置７に導く。In the thermal decomposition step, the valve V 1 is opened and the valve V 2 is closed by the timer 20, and the second
The fan F 2 is stopped and the first fan F 1 is operated,
Exhaust gas from the treatment tank 1 flows from the first flow path 11 to the dust collector 6 and the first
It leads to the deodorizing device 7.
【００２６】このタイマー２０によるバルブＶ１，Ｖ２
及びファンＦ１，Ｆ２の切り替えは、予め乾燥工程にお
ける切替予定時間と熱分解工程における切替予定時間を
入力しておき、処理槽１に原料を投入して所定の時間、
通常は１０〜１５時間程度の乾燥工程の後、排ガス流路
を第２流路１２から第１流路１１に切り替え、所定の時
間、通常は３〜５時間程度の熱分解工程の後、排ガス処
理を終了するようにすれば良い。The valves V 1 , V 2 by the timer 20
For switching between the fans F 1 and F 2, the planned switching time in the drying process and the planned switching time in the thermal decomposition process are input in advance, and the raw material is put into the processing tank 1 for a predetermined time,
Usually, after the drying step for about 10 to 15 hours, the exhaust gas passage is switched from the second passage 12 to the first passage 11, and after the thermal decomposition step for a predetermined time, usually about 3 to 5 hours, the exhaust gas It suffices to end the processing.
【００２７】図１に示す熟成コンポスト様物の製造装置
は、本発明の実施の形態の一例を示すものであって、本
発明はその要旨を超えない限り、何ら図示のものに限定
されるものではない。The apparatus for producing an aged compost-like product shown in FIG. 1 shows an example of an embodiment of the present invention, and the present invention is not limited to the illustrated one unless it exceeds the gist. is not.
【００２８】例えば、図１の熟成コンポスト様物の製造
装置では、第１流路１１及び第２流路１２の各々にファ
ンが設けられているが、ファンは共用流路１０に１台の
み設け、各流路１１，１２のファンは省略しても良い。
この場合には、共用流路１０に、乾燥工程の排ガス量に
対応し得る大容量型ファンを設け、ファンの回転数又は
弁の開度調整等で熱分解工程における排ガス送気量を低
減する。ただし、ファンが集塵機よりも上流側に設けら
れていると、熱分解工程の排ガス中の粉塵でファンが汚
染されるため、図１のように、第１流路１１の集塵機６
の下流側に第１ファンＦ１を設け、第２ファンＦ２を第
２流路１２に設けることが好ましい。For example, in the apparatus for producing an aged compost-like product shown in FIG. 1, a fan is provided in each of the first flow passage 11 and the second flow passage 12, but only one fan is provided in the common flow passage 10. The fans of the flow paths 11 and 12 may be omitted.
In this case, a large-capacity fan that can cope with the amount of exhaust gas in the drying process is provided in the common flow path 10, and the amount of exhaust gas sent in the thermal decomposition process is reduced by adjusting the rotation speed of the fan or the opening of the valve. . However, if the fan is provided on the upstream side of the dust collector, the fan is contaminated by the dust in the exhaust gas of the thermal decomposition process. Therefore, as shown in FIG.
It is preferable that the first fan F 1 is provided on the downstream side of the above and the second fan F 2 is provided in the second flow path 12.
【００２９】また、排ガスの流路切り替えは、図１に示
すバルブＶ１，Ｖ２（この設置位置も任意である。）の
開閉による他、共用流路１０から第１流路１１と第２流
路１２との分岐部に三方バルブを設けて行っても良い。The switching of the exhaust gas flow paths is performed by opening and closing the valves V 1 and V 2 (the installation positions thereof are also arbitrary) shown in FIG. 1, and also from the common flow path 10 to the first flow path 11 and the second flow path. A three-way valve may be provided at the branch portion with the flow path 12.
【００３０】排ガスの流路切り替えの制御は、タイマー
２０による時間制御の他、排ガス温度や排ガス成分を指
標として行うこともできる。即ち、乾燥工程から熱分解
工程に移行すると、処理槽１内の原料温度が９０℃前後
から１００℃以上に上昇し始める。従って、温度計によ
り処理槽内の原料温度の上昇を検知して、自動的に流路
切り替えを行うようにすることができる。The control of switching the flow path of the exhaust gas can be performed by using the exhaust gas temperature or the exhaust gas component as an index in addition to the time control by the timer 20. That is, when shifting from the drying step to the thermal decomposition step, the raw material temperature in the processing tank 1 starts to rise from around 90 ° C to 100 ° C or higher. Therefore, it is possible to detect the rise in the temperature of the raw material in the processing tank with the thermometer and automatically switch the flow paths.
【００３１】また、乾燥工程から熱分解工程に移行する
と、排ガス中の水蒸気が殆ど無くなると共に、臭気成分
濃度、例えばアンモニア濃度が上昇する。従って、排ガ
スセンサを設け、例えば排ガスのアンモニア濃度が急上
昇するなどの顕著な変化を検知して自動的に流路切り替
えを行うこともできる。In addition, when the drying process shifts to the thermal decomposition process, the water vapor in the exhaust gas is almost eliminated, and the odor component concentration, for example, the ammonia concentration increases. Therefore, it is possible to provide an exhaust gas sensor and detect a remarkable change such as a rapid increase in the ammonia concentration of the exhaust gas to automatically switch the flow paths.
【００３２】排ガスの流路切り替え制御は、上記の指標
の２以上に基づいて行われてもよい。The flow path switching control of the exhaust gas may be performed based on two or more of the above indexes.
【００３３】ただし、原料の種類及び処理量、加熱温度
等の処理条件が一定であれば、乾燥工程の時間及び熱分
解工程の時間も一定であるので、上記のようにタイマー
による時間制御で流路切り替えを行うことが好ましい。However, if the processing conditions such as the type and amount of raw material and the heating temperature are constant, the time of the drying step and the time of the thermal decomposition step are also constant. It is preferable to switch the road.
【００３４】[0034]
【実施例】以下に実施例及び比較例を挙げて本発明をよ
り具体的に説明する。EXAMPLES The present invention will be described more specifically with reference to Examples and Comparative Examples below.
【００３５】実施例１
し尿処理汚泥を４．２ｔ／日の処理量で処理する熟成コ
ンポスト様物の製造装置において、図１に示す如く、湿
式集塵機６及び第１脱臭装置７と第２脱臭装置８とを設
け、排ガスの処理を行った。乾燥工程時間は約１５時
間、熱分解工程時間は約４時間であり、排ガスの流路切
り替えはタイマー２０により行った。Example 1 In an apparatus for producing an aged compost-like article for treating human waste treated sludge at a treatment amount of 4.2 t / day, as shown in FIG. 1, a wet dust collector 6, a first deodorizing device 7 and a second deodorizing device are used. 8 was provided to treat the exhaust gas. The drying process time was about 15 hours, the thermal decomposition process time was about 4 hours, and the passage of the exhaust gas was switched by the timer 20.
【００３６】乾燥工程の排ガス（１３ｍ３／分）は、第
２脱臭装置８の生物脱臭装置で脱臭処理した。乾燥開始
から１５時間後、排ガス流路を切り替えて、熱分解工程
の排ガス（０．５ｍ３／分）は集塵機６で除塵処理した
後、第１脱臭装置７の燃焼式脱臭装置で燃焼脱臭処理し
た。Exhaust gas (13 m 3 / min) in the drying step was deodorized by the biological deodorizer of the second deodorizer 8. After 15 hours from the start of drying, the exhaust gas flow path is switched, and the exhaust gas (0.5 m 3 / min) of the thermal decomposition process is dedusted by the dust collector 6 and then burned and deodorized by the combustion type deodorizing device of the first deodorizing device 7. did.
【００３７】この排ガス脱臭処理において、燃焼式脱臭
装置の排ガスの燃焼に必要な重油使用量は５Ｌ／日であ
った。In this exhaust gas deodorizing process, the amount of heavy oil used for combustion of the exhaust gas in the combustion type deodorizing device was 5 L / day.
【００３８】比較例１
実施例１において、第２脱臭装置を備える第２流路の排
ガス処理系を省略し、第１流路１１の集塵機６、第１フ
ァンＦ１、第１脱臭装置７の処理能力を上げて大容量排
ガスに対応できるようにし、乾燥工程の排ガスも熱分解
工程の排ガスもすべて第１流路１１から集塵機６及び第
１脱臭装置７の燃焼式脱臭装置で処理したこと以外は同
様の運転条件で排ガスの処理を行った。Comparative Example 1 In Example 1, the exhaust gas treatment system of the second flow path provided with the second deodorization device was omitted, and the dust collector 6, the first fan F 1 and the first deodorization device 7 of the first flow path 11 were omitted. Except that the exhaust gas of the drying process and the exhaust gas of the thermal decomposition process were all treated from the first flow path 11 by the dust collector 6 and the combustion deodorizing device of the first deodorizing device 7 so that the processing capacity can be increased to cope with a large amount of exhaust gas. Treated the exhaust gas under the same operating conditions.
【００３９】その結果、燃焼式脱臭装置の重油使用量は
３００Ｌ／日であり、実施例１に比べて排ガス処理コス
トが著しく高騰した。As a result, the amount of heavy oil used in the combustion type deodorizing device was 300 L / day, and the exhaust gas treatment cost was significantly higher than in Example 1.
【００４０】この結果から、本発明によれば、排ガス処
理コストを従来装置よりも大幅に低減することができる
ことがわかる。From this result, it is understood that the present invention can significantly reduce the exhaust gas treatment cost as compared with the conventional apparatus.
【００４１】[0041]
【発明の効果】以上詳述した通り、本発明の熟成コンポ
スト様物の製造装置によれば、有機性廃棄物を加熱する
ことにより熟成コンポスト様物を製造する装置におい
て、発生する排ガスの処理コストを合理化することによ
り排ガス処理コストを低減し、これにより有機性廃棄物
の処理コストを低減することができる。As described above in detail, according to the apparatus for producing aged compost-like matter of the present invention, the treatment cost of exhaust gas generated in the apparatus for producing aged compost-like article by heating organic waste. By rationalizing the above, it is possible to reduce the exhaust gas treatment cost and thereby reduce the treatment cost of the organic waste.
【図１】本発明の熟成コンポスト様物の製造装置の実施
の形態を示す系統図である。FIG. 1 is a system diagram showing an embodiment of an apparatus for producing an aged compost-like product according to the present invention.
１ 処理槽 ６ 集塵機 ７ 第１脱臭装置（高濃度排ガス用） ８ 第２脱臭装置（中・低濃度排ガス用） １１ 第１流路 １２ 第２流路 ２０ タイマー 1 processing tank 6 dust collector 7 First deodorizing device (for high concentration exhaust gas) 8 Second deodorizing device (for medium / low concentration exhaust gas) 11 First flow path 12 Second channel 20 timer
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ０２Ｆ 11/10 Ｂ０１Ｄ 53/34 １１６Ａ Ｆ２３Ｇ 5/50 １１６Ｃ 7/06 １０２ １１６Ｇ ＺＡＢ Ｆターム(参考） 3K062 AA18 AB01 AB02 AC02 BA02 CB08 DA21 DB30 3K078 BA06 BA08 BA21 CA02 DA01 DA14 4D002 AA03 AA05 AA06 AA13 AB02 AC10 BA02 BA04 BA17 DA35 EA04 4D059 AA00 BB03 CA16 CC01 EA06 EA09 EA16 EB20 4H061 AA03 CC51 GG01 GG10 GG18 GG51 GG70 HH42 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) C02F 11/10 B01D 53/34 116A F23G 5/50 116C 7/06 102 116G ZAB F term (reference) 3K062 AA18 AB01 AB02 AC02 BA02 CB08 DA21 DB30 3K078 BA06 BA08 BA21 CA02 DA01 DA14 4D002 AA03 AA05 AA06 AA13 AB02 AC10 BA02 BA04 BA17 DA35 EA04 4D059 AA00 BB03 CA16 CC01 EA06 EA09 EA16 EB20 4H061 H0118A51 CC10 CC51
Claims (4)
と、該処理槽から排出される排ガスを脱臭する脱臭装置
とを備えた熟成コンポスト様物の製造装置において、 前記脱臭装置として、高濃度排ガス用の第１脱臭装置
と、中・低濃度排ガス用の第２脱臭装置とが設けられて
おり、 前記処理槽からの排ガスを該第１脱臭装置に導く第１流
路と該第２脱臭装置に導く第２流路とが設けられてお
り、 前記処理槽からの排ガスを該第１流路と第２流路とのい
ずれかに導くように流路を切り替える切替手段が設けら
れていることを特徴とする熟成コンポスト様物の製造装
置。1. An apparatus for producing an aged compost-like product, comprising: a treatment tank for heating a raw material charged therein; and a deodorizing device for deodorizing exhaust gas discharged from the treatment tank. A first deodorizing device for concentrated exhaust gas and a second deodorizing device for medium / low-concentration exhaust gas are provided, and a first flow path for guiding the exhaust gas from the treatment tank to the first deodorizing device and the second deodorizing device. A second flow path leading to the deodorizing device is provided, and switching means for switching the flow path is provided so as to guide the exhaust gas from the processing tank to either the first flow path or the second flow path. A device for producing aged compost-like products, which is characterized in that
は、集塵装置と、燃焼式脱臭装置又は触媒脱臭装置とを
備えることを特徴とする熟成コンポスト様物の製造装
置。2. The apparatus for producing an aged compost-like article according to claim 1, wherein the first deodorizing device includes a dust collecting device and a combustion deodorizing device or a catalytic deodorizing device.
装置は、生物脱臭装置、水洗脱臭装置、薬洗脱臭装置又
は活性炭脱臭装置であることを特徴とする熟成コンポス
ト様物の製造装置。3. The apparatus for producing an aged compost-like product according to claim 1, wherein the second deodorizing device is a biological deodorizing device, a water washing deodorizing device, a chemical washing deodorizing device, or an activated carbon deodorizing device.
て、前記切替手段は、前記処理槽による原料の処理時
間、該処理槽内の原料温度、又は排ガス成分濃度に基い
て自動制御されることを特徴とする熟成コンポスト様物
の製造装置。4. The switching device according to claim 1, wherein the switching means is automatically controlled based on a processing time of the raw material in the processing tank, a raw material temperature in the processing tank, or an exhaust gas component concentration. An apparatus for producing an aged compost-like product, which is characterized in that
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002132939A JP2003327487A (en) | 2002-05-08 | 2002-05-08 | Apparatus for manufacturing matured compost-like material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002132939A JP2003327487A (en) | 2002-05-08 | 2002-05-08 | Apparatus for manufacturing matured compost-like material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003327487A true JP2003327487A (en) | 2003-11-19 |
Family
ID=29696220
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005270731A (en) * | 2004-03-23 | 2005-10-06 | Kurita Water Ind Ltd | Method for eliminating odor upon thermal treatment of sludge |
| JP2012250218A (en) * | 2011-06-07 | 2012-12-20 | Fuji Electric Co Ltd | Drainage treatment apparatus |
| CN107556137A (en) * | 2017-09-18 | 2018-01-09 | 杭州中艺生态环境工程有限公司 | The efficiently ecological preparation method of decomposed fertilizer and equipment |
-
2002
- 2002-05-08 JP JP2002132939A patent/JP2003327487A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005270731A (en) * | 2004-03-23 | 2005-10-06 | Kurita Water Ind Ltd | Method for eliminating odor upon thermal treatment of sludge |
| JP2012250218A (en) * | 2011-06-07 | 2012-12-20 | Fuji Electric Co Ltd | Drainage treatment apparatus |
| CN107556137A (en) * | 2017-09-18 | 2018-01-09 | 杭州中艺生态环境工程有限公司 | The efficiently ecological preparation method of decomposed fertilizer and equipment |
| CN107556137B (en) * | 2017-09-18 | 2021-02-05 | 杭州中艺生态环境工程有限公司 | Equipment for ecological preparation method of efficient decomposed fertilizer |
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