JP2006116457A - Deodorization apparatus for sludge drier - Google Patents

Deodorization apparatus for sludge drier Download PDF

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JP2006116457A
JP2006116457A JP2004308036A JP2004308036A JP2006116457A JP 2006116457 A JP2006116457 A JP 2006116457A JP 2004308036 A JP2004308036 A JP 2004308036A JP 2004308036 A JP2004308036 A JP 2004308036A JP 2006116457 A JP2006116457 A JP 2006116457A
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exhaust gas
wet scrubber
temperature
sludge
cooling
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Kazutaka Yamamoto
和孝 山本
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YAMAMOTO GIKEN KOKI KK
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    • 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
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a deodorization apparatus for a sludge drier whose running cost is low and which is friendly to the global environment. <P>SOLUTION: This deodorization apparatus is provided with a wet scrubber 8 cooling and dehumidifying exhaust gas by showering it with a coolant; a bio-deodorizing column 9 introducing exhaust gas cooled and dehumidified in the wet scrubber 8 and with condensate of the vaporized steam removed therefrom, and deodorizing the odor included in the exhaust gas biochemically with microorganisms; and a cooling means 19 cooling the coolant used for showering the exhaust gas in the wet scrubber 8 to maintain the temperature of the exhaust gas introduced into the bio-deodorizing column 9 from the wet scrubber 8, at an optimum temperature for the activity of the microorganisms in the bio-deodorizing column 9, regardless of the atmospheric temperature or the temperature of the vaporized steam produced in the sludge drier. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、汚泥を減容化或いは再資源化するために乾燥処理する汚泥乾燥機の脱臭装置に関するものである。   The present invention relates to a deodorizing apparatus for a sludge dryer that performs drying treatment in order to reduce or recycle sludge.

一般に下水や排水処理により発生する汚泥は、脱水処理により含水率を低下させた脱水汚泥として排出される。このような脱水汚泥は減容化して埋め立て処分、海洋投棄処分がなされている。さらに最近では、再資源化が進み、汚泥をスラブ化して建設用材として有効利用できるように試みられている。   Generally, sludge generated by sewage and wastewater treatment is discharged as dehydrated sludge having a reduced water content by dehydration. Such dewatered sludge has been reduced in volume and disposed of in landfills or oceans. More recently, recycling has progressed and attempts have been made to make sludge into slabs for effective use as construction materials.

これら汚泥の最終処分の前工程として、脱水汚泥の乾燥処理が必要となる。従来、脱水汚泥を乾燥処理する装置としては、図２に示す如き汚泥乾燥機が知られている。この汚泥乾燥機は、ハウジング１内に２本の互いに内側に向かって回転（内転）するドラムドライヤー２，２を設けるとともに、これらのドラムドライヤー２，２内にボイラーの如き水蒸気源（図示せず）から給排される加熱水蒸気が送り込まれており、ドラムドライヤー２，２間に脱水汚泥供給機構３から脱水汚泥を供給することで、内転するドラムドライヤー２，２間に脱水汚泥を引き込み、両ドラムドライヤー２，２間の隙間に対応した厚みに薄く延ばしながら急速に加熱して糊化させるとともに、糊化してドラムドライヤー２，２の表面に付着したシート状の汚泥を、それぞれのドラムドライヤー２，２の回転中に乾燥させ、両ドラムドライヤー２，２の外側上方に配設したスクレーパ４，４によって乾燥固形物を掻き落とし、移送コンベア５，５及び排出コンベア６を経て連続的に機外に排出する。   As a pre-process for final disposal of these sludges, it is necessary to dry the dewatered sludge. 2. Description of the Related Art Conventionally, as an apparatus for drying dewatered sludge, a sludge dryer as shown in FIG. 2 is known. This sludge dryer is provided with two drum dryers 2 and 2 that rotate inward (inner rotation) in the housing 1, and a steam source (not shown) such as a boiler in the drum dryers 2 and 2. The heated water vapor supplied and discharged from the water is fed into the drum dryer 2 and 2, and the dehydrated sludge is supplied from the dehydrated sludge supply mechanism 3 to draw the dehydrated sludge between the drum dryers 2 and 2 rotating inward. The sheet-shaped sludge adhered to the surfaces of the drum dryers 2 and 2 is gelatinized by heating rapidly while thinly extending to a thickness corresponding to the gap between the drum dryers 2 and 2. Drying is performed while the dryers 2 and 2 are rotating, and the dried solids are scraped off and transferred by scrapers 4 and 4 disposed above and outside the drum dryers 2 and 2. Conveyors 5,5 and continuously discharged outside through the discharge conveyer 6.

一方、ハウジング１から排出されてくる脱水汚泥から蒸発した蒸発蒸気（ベーパ）を含む排気ガスは、ファン７によって大気に放出される。   On the other hand, exhaust gas containing evaporated vapor (vapor) evaporated from the dewatered sludge discharged from the housing 1 is released to the atmosphere by the fan 7.

ところで、上記汚泥乾燥機においては、排気ガス中に脱水汚泥から発生する不愉快な臭気が含まれており、排気ガスを脱臭処理してから大気に放出させることが必要である。   By the way, in the said sludge dryer, the unpleasant odor which generate | occur | produces from a dehydration sludge is contained in exhaust gas, It is necessary to discharge | release an exhaust gas to air | atmosphere after carrying out a deodorizing process.

そこで、従来では、汚泥乾燥機の排気ガスを脱臭処理して大気に放出させるため、排気ガスをバーナー等にて加熱して臭気を燃焼させたり、加熱温度を下げて触媒を利用する等の方法で脱臭する脱臭装置がファン７の下流側に設けられている。   Therefore, conventionally, in order to deodorize the exhaust gas of the sludge dryer and release it to the atmosphere, the exhaust gas is heated with a burner or the like to burn odors, or the heating temperature is lowered to use a catalyst. A deodorizing device for deodorizing at the downstream side of the fan 7 is provided.

しかし、従来の上記脱臭装置は、いずれも排気ガスを加熱する必要があるため、排気ガスを加熱するための燃料が多量に必要であり、燃料費が嵩んでランニングコストの高騰を招くとともに、燃料資源の保護及び地球温暖化の観点からも問題を有している。   However, since all of the conventional deodorizing devices need to heat the exhaust gas, a large amount of fuel is required to heat the exhaust gas, which increases the fuel cost and increases the running cost. It also has problems from the viewpoint of resource protection and global warming.

本発明は、上記問題点を解決するため、ランニングコストが安価で、かつ、地球環境にやさしい汚泥乾燥機の脱臭装置を提供することを目的とするものである。   In order to solve the above-described problems, an object of the present invention is to provide a deodorizing apparatus for a sludge dryer that is low in running cost and is friendly to the global environment.

上記目的を達成するため、本発明は、汚泥を乾燥する汚泥乾燥機に用いる脱臭装置であって、前記汚泥乾燥機にて乾燥された汚泥から発生する蒸発蒸気を含む排気ガスを導入し、この排気ガスを冷媒にてシャワーリングして冷却除湿するウェットスクラバーと、前記ウェットスクラバーにて冷却除湿されて前記蒸発蒸気による凝縮水を除去した排気ガスを導入し、この排気ガスに含まれる臭気を微生物にて生物化学的に脱臭する生物脱臭塔と、当該生物脱臭塔における微生物の活動を高めた状態で維持するため、前記ウェットスクラバーから前記生物脱臭塔へ導入される排気ガスの温度を、外気温度や前記汚泥乾燥機で発生する蒸発蒸気の温度に関係なく前記生物脱臭塔における微生物の活動に最適な温度に維持するように、前記ウェットスクラバーで排気ガスのシャワーリングに用いる冷媒を冷却する冷却手段とを備えたことを特徴としている。   In order to achieve the above object, the present invention provides a deodorization apparatus for use in a sludge dryer for drying sludge, which introduces exhaust gas containing evaporating vapor generated from sludge dried by the sludge dryer. A wet scrubber that cools and dehumidifies by showering the exhaust gas with a refrigerant, and an exhaust gas that is cooled and dehumidified by the wet scrubber to remove condensed water from the evaporated vapor are introduced, and the odor contained in the exhaust gas is removed by microorganisms. In order to maintain the biological deodorization tower that biochemically deodorizes in the state and the activity of microorganisms in the biological deodorization tower in an enhanced state, the temperature of the exhaust gas introduced from the wet scrubber to the biological deodorization tower is set to the outside air temperature. And the wets so as to maintain the optimum temperature for the activity of microorganisms in the biological deodorization tower regardless of the temperature of the vapor generated in the sludge dryer. Is characterized in that a cooling means for cooling the coolant to be used for showering the exhaust gas with rubber.

本発明によれば、汚泥乾燥機から排出されてくる脱水汚泥から蒸発した蒸発蒸気を含む排気ガスを、ウェットスクレバーで冷媒にてシャワーリングして冷却除湿した後、生物脱臭塔で微生物にて生物学的に脱臭処理することができ、従来に比べてランニングコストの低減が図れるとともに、地球温暖化の要因となるＣＯ2の発生が無くなり地球環境の保護が図れる。しかも、ウェットスクレバーで排気ガスを冷媒にてシャワーリングして冷却除湿するにあたり、冷却手段にて冷却された冷媒を用いることで、ウェットスクラバーから生物脱臭塔へ導入される排気ガスの温度を、外気温度や汚泥乾燥機で発生する蒸発蒸気の温度に関係なく生物脱臭塔における微生物の活動に最適な温度に維持できるため、生物脱臭塔における微生物の活動を高めた状態で維持して長期間に亘り脱臭を効率良く行なわせる。 According to the present invention, the exhaust gas containing the evaporated vapor evaporated from the dewatered sludge discharged from the sludge dryer is showered with a refrigerant with a wet scrubber, cooled and dehumidified, and then the microorganisms with a biological deodorization tower. Biological deodorization treatment can be performed, and the running cost can be reduced as compared with the conventional case, and the generation of CO 2 that causes global warming is eliminated and the global environment can be protected. Moreover, when the exhaust gas is showered with a refrigerant by a wet scrubber and cooled and dehumidified, the temperature of the exhaust gas introduced from the wet scrubber to the biological deodorization tower is reduced by using the refrigerant cooled by the cooling means. Regardless of the outside air temperature or the temperature of the evaporating vapor generated in the sludge dryer, it can be maintained at the optimum temperature for microbial activity in the biological deodorization tower. The deodorization is performed efficiently.

以下、本発明の実施の形態を図面に基づいて説明する。図１は、図２に示される汚泥乾燥機に適用した本発明に係る汚泥乾燥機の脱臭装置の一実施形態を示したフローシート図である。尚、図１について、図２と同一又は対応する部分には同一の符号を付してある。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a flow sheet diagram showing an embodiment of a deodorizing apparatus for a sludge dryer according to the present invention applied to the sludge dryer shown in FIG. In FIG. 1, the same or corresponding parts as in FIG.

図１において、８はファン７の下流側に設けられたウェットスクラバーであって、汚泥乾燥機にて乾燥された脱水汚泥から蒸発する蒸発蒸気を含む排気ガスを導入し、この排気ガスを冷媒、例えば、冷却水にてシャワーリングして冷却除湿させる。   In FIG. 1, 8 is a wet scrubber provided on the downstream side of the fan 7, which introduces exhaust gas containing evaporating vapor evaporating from dehydrated sludge dried by a sludge dryer, and uses the exhaust gas as a refrigerant, For example, it is cooled and dehumidified by showering with cooling water.

９はウェットスクラバー８の下流側に気水分離器１０を介して設けられた生物脱臭塔であって、内部に微生物を担持する担体（例えば、活性炭等）が充填されており、この担体に担持される無数の微生物にて排気ガス中の悪臭成分を捕捉分解させて脱臭する。   9 is a biological deodorization tower provided on the downstream side of the wet scrubber 8 via the air / water separator 10, and is filled with a carrier (for example, activated carbon, etc.) carrying microorganisms therein. The odor components in exhaust gas are captured and decomposed by countless microorganisms that are deodorized.

気水分離器１０は、ウェットスクラバー８にて冷却除湿された排気ガス中にはまだ水分が含まれており、この水分を更に除去するために設けられている。気水分離器１０にて蒸発蒸気による凝縮水が除去された排気ガスは生物脱臭塔９に導入され、気水分離器１０にて排気ガスから除去された凝縮水は冷却水とともに排水として排水溝１１に排出される。   The steam separator 10 is provided to further remove the moisture, since the exhaust gas cooled and dehumidified by the wet scrubber 8 still contains moisture. The exhaust gas from which the condensed water by the evaporated steam is removed by the steam separator 10 is introduced into the biological deodorization tower 9, and the condensed water removed from the exhaust gas by the steam separator 10 is drained along with the cooling water as drainage. 11 is discharged.

１２はウェットスクラバー８と貯水槽１３との間に設けられた供給ポンプであって、ウェットスクラバー８で排気ガスのシャワーリングに用いられる冷却水を貯水槽１３から供給する。   A supply pump 12 is provided between the wet scrubber 8 and the water storage tank 13, and supplies the cooling water used for exhaust gas showering from the water storage tank 13 by the wet scrubber 8.

貯水槽１３は、水中ポンプ１４にて給水槽１５から供給される原水を溜めるための原水槽１６と、原水槽１６内の原水を冷却させた冷却水を溜めるための冷却水槽１７とに分かれており、循環ポンプ１８にて原水槽１６から原水が冷却水槽１７へ向けて送られるようになっている。   The water storage tank 13 is divided into a raw water tank 16 for storing raw water supplied from the water supply tank 15 by the submersible pump 14 and a cooling water tank 17 for storing cooling water obtained by cooling the raw water in the raw water tank 16. In addition, the raw water is sent from the raw water tank 16 toward the cooling water tank 17 by the circulation pump 18.

１９は循環ポンプ１８にて貯水槽１３の原水槽１６の原水を冷却水槽１７へ向けて送る途中に設けられた冷却手段であるクーリングタワーであって、循環ポンプ１８にて貯水槽１３の原水槽１６から原水を導入し、この原水を送風機にて取り込んだ外気と接触させることで冷却する。このクーリングタワー１９にて冷却された原水は、冷却水として冷却水槽１７に送られて貯溜される。   Reference numeral 19 denotes a cooling tower which is a cooling means provided in the middle of sending the raw water of the raw water tank 16 of the water storage tank 13 to the cooling water tank 17 by the circulation pump 18, and the raw water tank 16 of the water storage tank 13 by the circulation pump 18. The raw water is introduced from the air and cooled by bringing the raw water into contact with the outside air taken in by a blower. The raw water cooled by the cooling tower 19 is sent to the cooling water tank 17 as cooling water and stored.

尚、クーリングタワー１９は、外気温度や汚泥乾燥機で発生する蒸発蒸気の温度等に応じて冷却水の冷却温度を調整でき、ウェットスクラバー８で冷却水にてシャワーリングされた後の排気ガスの温度を、外気温度や汚泥乾燥機で発生する蒸発蒸気の温度等に関係なく一定温度に維持でき、これにより生物脱臭塔９に導入される排気ガスの温度を、生物脱臭塔９における微生物の活動に最適な温度に維持できる。   The cooling tower 19 can adjust the cooling temperature of the cooling water according to the outside air temperature, the temperature of the evaporated steam generated by the sludge dryer, and the temperature of the exhaust gas after being showered with the cooling water by the wet scrubber 8. Can be maintained at a constant temperature regardless of the outside air temperature or the temperature of the evaporated vapor generated in the sludge dryer, and thereby the temperature of the exhaust gas introduced into the biological deodorization tower 9 can be used for the activity of microorganisms in the biological deodorization tower 9. It can be maintained at the optimum temperature.

次に、上記のように構成された本発明に係る汚泥乾燥機の脱臭装置による作用について説明する。   Next, the effect | action by the deodorizing apparatus of the sludge dryer which concerns on this invention comprised as mentioned above is demonstrated.

水中ポンプ１４にて給水槽１５から原水が貯水槽１３の原水槽１６内に供給されて貯溜されるとともに、循環ポンプ１８にて貯水槽１３の原水槽１６から原水（例えば、温度：４０℃前後）が冷却水槽１７に向けて送られ、その途中でクーリングタワー１９にて冷却されて冷却水（例えば、温度：３０℃前後）として冷却水槽１７内に貯溜される。   The raw water is supplied from the water supply tank 15 to the raw water tank 16 of the water storage tank 13 by the submersible pump 14 and stored, and the raw water (for example, temperature: around 40 ° C.) from the raw water tank 16 of the water storage tank 13 by the circulation pump 18. ) Is sent to the cooling water tank 17 and is cooled by the cooling tower 19 in the middle thereof and stored in the cooling water tank 17 as cooling water (for example, temperature: around 30 ° C.).

同時に、供給ポンプ１２にて貯水槽１３の冷却水槽１７から冷却水がウェットスクラバー８に供給され、このウェットスクラバー８内で冷却水が散水されて当該ウェットスクラバー８内が冷却水の冷却作用により冷却環境下におかれる。   At the same time, the cooling water is supplied from the cooling water tank 17 of the water storage tank 13 to the wet scrubber 8 by the supply pump 12, and the cooling water is sprinkled in the wet scrubber 8, and the inside of the wet scrubber 8 is cooled by the cooling action of the cooling water. Place in the environment.

この状態において、ハウジング１から排出されてくる脱水汚泥から蒸発した蒸発蒸気を含む高温（例えば、温度：６０℃〜１００℃）の排気ガスを、ファン７にてウェットスクラバー８に導入する。このウェットスクラバー８に導入された排気ガスは、ウェットスクラバー８内で冷却水にてシャワーリングされることで、低温（例えば、４０℃以下）に冷却されると同時に、大部分の蒸発蒸気が冷却水中に凝縮されて水分の含有量が大幅に減少される。ウェットスクラバー８でシャワーリングされて蒸発蒸気による凝縮水を除去された排気ガスは、気水分離器１０にて気水分離された後に生物脱臭塔９に導入され、生物脱臭塔９で無数の微生物にて悪臭成分が捕捉分解されて脱臭され、悪臭が取り除かれた状態で大気に放出される。一方、ウェットスクラバー８内で排気ガスをシャワーリングして冷却除湿した冷却水は、蒸発蒸気による凝縮水とともに排水として排水溝１１に排出される。   In this state, high-temperature (for example, temperature: 60 ° C. to 100 ° C.) exhaust gas containing evaporated vapor evaporated from the dewatered sludge discharged from the housing 1 is introduced into the wet scrubber 8 by the fan 7. The exhaust gas introduced into the wet scrubber 8 is showered with cooling water in the wet scrubber 8 so as to be cooled to a low temperature (for example, 40 ° C. or less) and at the same time, most of the evaporated vapor is cooled. Condensed in water, the water content is greatly reduced. The exhaust gas that has been showered by the wet scrubber 8 and from which the condensed water from the evaporated vapor has been removed is separated into air and water by the steam separator 10 and then introduced into the biological deodorization tower 9. The malodorous component is captured and decomposed at, and deodorized, and then released to the atmosphere with the malodor removed. On the other hand, the cooling water that has been cooled and dehumidified by showering the exhaust gas in the wet scrubber 8 is discharged into the drain groove 11 as drainage together with the condensed water by the evaporated steam.

本発明に係る汚泥乾燥機の脱臭装置においては、汚泥乾燥機にウェットスクラバー８及び生物脱臭塔１９を付設し、汚泥乾燥機のハウジング１から排出されてくる脱水汚泥から蒸発した蒸発蒸気を含む排気ガスを、ウェットスクラバー８で冷却水にてシャワーリングして冷却除湿した後、生物脱臭塔１９で微生物にて生物学的に脱臭して大気に放出するようにしたので、従来に比べてランニングコストの低減が図れるとともに、地球温暖化の要因となるＣＯ2の発生が無くなって地球環境の保護が図れる。 In the sludge dryer deodorization apparatus according to the present invention, the wet scrubber 8 and the biological deodorization tower 19 are attached to the sludge dryer, and the exhaust gas contains the evaporated vapor evaporated from the dewatered sludge discharged from the housing 1 of the sludge dryer. Since the gas was showered with cooling water with the wet scrubber 8 and cooled and dehumidified, the biological deodorization tower 19 biologically deodorized with microorganisms and released into the atmosphere. Can be reduced, and the generation of CO 2 that causes global warming is eliminated, thereby protecting the global environment.

ところで、給水槽１５からの原水をクーリングタワー１９にて冷却せずにウェットスクラバー８に供給し、このウェットスクラバー８で脱水汚泥から蒸発した蒸発蒸気を含む高温（例えば、温度：６０℃〜１００℃）の排気ガスを原水（例えば、温度：４０℃以上）にてシャワーリングして冷却除湿しても、このシャワーリングによる排気ガスの冷却除湿効果が僅かであり、これではウェットスクラバー８から排出される排気ガスの温度が４０℃以上になり、排気ガスの温度が４０℃以上になると、生物脱臭塔９における排気ガスの悪臭成分の捕捉分解に関与する微生物がうまく活動しなくなり、脱臭効果が低下してしまう。   By the way, the raw water from the water supply tank 15 is supplied to the wet scrubber 8 without being cooled by the cooling tower 19, and the wet scrubber 8 includes a high temperature (for example, temperature: 60 ° C. to 100 ° C.) including the evaporated vapor evaporated from the dewatered sludge. Even if the exhaust gas is showered with raw water (eg, temperature: 40 ° C. or higher) and cooled and dehumidified, the exhaust gas is cooled and dehumidified by the shower ring, and the exhaust gas is discharged from the wet scrubber 8. When the temperature of the exhaust gas is 40 ° C. or higher and the temperature of the exhaust gas is 40 ° C. or higher, the microorganisms involved in capturing and decomposing the malodorous components of the exhaust gas in the biological deodorization tower 9 do not work well, and the deodorizing effect is reduced. End up.

しかし、本発明に係る汚泥乾燥機の脱臭装置では、給水槽１５からの原水をクーリングタワー１９にて冷却させて冷却水としてウェットスクラバー８に供給し、このウェットスクラバー８で脱水汚泥から蒸発した蒸発蒸気を含む高温の排気ガスを冷却水（例えば、温度：３０℃以下）にてシャワーリングして冷却除湿するようにしたので、このシャワーリングによる排気ガスの冷却除湿効果が大きくてウェットスクラバー８から排出される排気ガスの温度が生物脱臭塔９で微生物が活発に活動する４０℃以下になり、これにより生物脱臭塔９における微生物の活動が活発になり、脱臭効果を向上できる。   However, in the deodorizer of the sludge dryer according to the present invention, the raw water from the water supply tank 15 is cooled by the cooling tower 19 and supplied to the wet scrubber 8 as cooling water, and the evaporated steam evaporated from the dewatered sludge by the wet scrubber 8. The exhaust gas is exhausted from the wet scrubber 8 because the exhaust gas can be cooled and dehumidified by showering it with cooling water (for example, temperature: 30 ° C. or lower). The temperature of the exhaust gas is 40 ° C. or less at which microorganisms are actively activated in the biological deodorization tower 9, whereby the activity of microorganisms in the biological deodorization tower 9 is activated and the deodorizing effect can be improved.

しかも、クーリングタワー１９にて外気温度や汚泥乾燥機で発生する蒸発蒸気の温度等に応じて冷却水の冷却温度を調整するので、外気温度や汚泥乾燥機で発生する蒸発蒸気の温度等に関係なく生物脱臭塔９に導入される排気ガスの温度が、生物脱臭塔９における微生物の活動に最適な温度である４０℃以下に維持され、これにより生物脱臭塔９における微生物の活動を高めた状態で維持して長期間に亘り脱臭を効率良く行なわせる。   In addition, since the cooling temperature of the cooling water is adjusted in the cooling tower 19 according to the outside air temperature or the temperature of the evaporated steam generated in the sludge dryer, the temperature is not affected by the outside air temperature or the temperature of the evaporated steam generated in the sludge dryer. The temperature of the exhaust gas introduced into the biological deodorization tower 9 is maintained at 40 ° C. or less, which is the optimum temperature for the activity of microorganisms in the biological deodorization tower 9, thereby increasing the activity of microorganisms in the biological deodorization tower 9. Maintain and allow efficient deodorization over a long period of time.

以上、本発明に係る汚泥乾燥機の脱臭装置の一実施形態について説明したが、本発明に係る汚泥乾燥機の脱臭装置はこの実施形態に限定されない。   As mentioned above, although one Embodiment of the deodorizing apparatus of the sludge dryer which concerns on this invention was described, the deodorizing apparatus of the sludge dryer which concerns on this invention is not limited to this embodiment.

例えば、図１に示した実施形態では、原水をクーリングタワー１９にて冷却するようにしているが、本発明の冷却手段はクーリングタワー１９に限定されるものでなく、クーリングタワー１９以外の冷却手段にて原水を冷却することも可能である。   For example, in the embodiment shown in FIG. 1, raw water is cooled by the cooling tower 19, but the cooling means of the present invention is not limited to the cooling tower 19, and the raw water is cooled by a cooling means other than the cooling tower 19. It is also possible to cool.

また、図１に示した実施形態では、ウェットスクラバー８で排気ガスをシャワーリングした冷却水を排気ガスの蒸発蒸気による凝縮水とともに排水として排水溝１１に排出するようにしたワンウェイ方式にしているが、本発明はワンウェイ式に限定されるものではなく、ウェットスクラバー８で排気ガスをシャワーリングした冷却水を排気ガスの蒸発蒸気による凝縮水とともに原水として給水槽１５に戻すようにした循環方式にすることも可能である。   In the embodiment shown in FIG. 1, the cooling water showered with the exhaust gas by the wet scrubber 8 is discharged into the drain groove 11 as drainage together with the condensed water by the evaporated vapor of the exhaust gas. The present invention is not limited to the one-way type, and a circulation system in which the cooling water showered with the exhaust gas by the wet scrubber 8 is returned to the water supply tank 15 as the raw water together with the condensed water by the evaporated vapor of the exhaust gas is adopted. It is also possible.

更に、図１に示す実施形態では、ハウジング１内に２本のドラムドライヤー２，２を有するダブルドラム方式の汚泥乾燥機に適用した場合について説明しているが、本発明はダブルドラム方式の汚泥乾燥機への適用に限定されるものではなく、ダブルドラム方式の汚泥乾燥機以外の汚泥乾燥機に適用することも可能である。   Furthermore, in the embodiment shown in FIG. 1, the case where the present invention is applied to a double drum type sludge dryer having two drum dryers 2 and 2 in the housing 1 is described. However, the present invention is a double drum type sludge. The present invention is not limited to application to a dryer, and can be applied to a sludge dryer other than a double drum type sludge dryer.

本発明に係る汚泥乾燥機の脱臭装置の一実施形態を示すフローシート図である。It is a flow sheet figure showing one embodiment of the deodorization device of the sludge dryer concerning the present invention. 脱臭装置を用いない汚泥乾燥機を示すフローシート図である。It is a flow sheet figure which shows the sludge dryer which does not use a deodorizing apparatus.

符号の説明Explanation of symbols

１ ハウジング
２ ドラムドライヤー
３ 脱水汚泥供給機構
４ スクレーパ
５ 移送コンベヤ
６ 排出コンベヤ
７ ファン
８ ウェットスクラバー
９ 生物脱臭塔
１０ 気水分離器
１１ 排水溝
１２ 供給ポンプ
１３ 貯水槽
１４ 水中ポンプ
１５ 給水槽
１６ 原水槽
１７ 冷却水槽
１８ 循環ポンプ
１９ クーリングタワー DESCRIPTION OF SYMBOLS 1 Housing 2 Drum dryer 3 Dehydrated sludge supply mechanism 4 Scraper 5 Transfer conveyor 6 Discharge conveyor 7 Fan 8 Wet scrubber 9 Biodeodorization tower 10 Air-water separator 11 Drain groove 12 Supply pump 13 Water storage tank 14 Submersible pump 15 Water supply tank 16 Raw water tank 17 Cooling water tank 18 Circulation pump 19 Cooling tower

Claims (1)

汚泥を乾燥する汚泥乾燥機に用いる脱臭装置であって、
前記汚泥乾燥機にて乾燥された汚泥から発生する蒸発蒸気を含む排気ガスを導入し、この排気ガスを冷媒にてシャワーリングして冷却除湿するウェットスクラバーと、
前記ウェットスクラバーにて冷却除湿されて前記蒸発蒸気による凝縮水を除去した排気ガスを導入し、この排気ガスに含まれる臭気を微生物にて生物化学的に脱臭する生物脱臭塔と、
当該生物脱臭塔における微生物の活動を高めた状態で維持するため、前記ウェットスクラバーから前記生物脱臭塔へ導入される排気ガスの温度を、外気温度や前記汚泥乾燥機で発生する蒸発蒸気の温度に関係なく前記生物脱臭塔における微生物の活動に最適な温度に維持するように、前記ウェットスクラバーで排気ガスのシャワーリングに用いる冷媒を冷却する冷却手段とを備えたことを特徴とする汚泥乾燥機の脱臭装置。 A deodorizing device used in a sludge dryer for drying sludge,
A wet scrubber that introduces exhaust gas containing evaporated vapor generated from the sludge dried by the sludge dryer, showers the exhaust gas with a refrigerant, and cools and dehumidifies;
A biological deodorization tower that introduces exhaust gas that has been cooled and dehumidified by the wet scrubber and removed condensed water from the evaporated vapor, and biochemically deodorizes odors contained in the exhaust gas;
In order to maintain the activity of microorganisms in the biological deodorization tower in an enhanced state, the temperature of the exhaust gas introduced from the wet scrubber to the biological deodorization tower is set to the outside air temperature or the temperature of the evaporated vapor generated in the sludge dryer. Irrespective of the sludge dryer, comprising a cooling means for cooling the refrigerant used for exhaust gas showering by the wet scrubber so as to maintain an optimum temperature for the activity of microorganisms in the biological deodorization tower. Deodorizing device.
JP2004308036A 2004-10-22 2004-10-22 Deodorization apparatus for sludge drier Pending JP2006116457A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100894038B1 (en) * 2008-07-09 2009-04-22 (주)세종이엔지 A bad smell remover compensating temperature
WO2022075401A1 (en) * 2020-10-08 2022-04-14 株式会社ミライエ Deodorization treatment device and information collection system
CN115321786A (en) * 2022-09-16 2022-11-11 滨州市生态环境服务中心 Sludge waste gas comprehensive treatment system

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Publication number Priority date Publication date Assignee Title
JPS6344921A (en) * 1986-08-13 1988-02-25 Nisshin Oil Mills Ltd:The Method for deodorizing exhaust gas
JPH0587494U (en) * 1992-04-23 1993-11-26 新日本製鐵株式会社 Exhaust circulation type hot air dryer
JPH07144116A (en) * 1993-11-25 1995-06-06 Nippon Steel Corp Non-drain type deodorizing method of waste gas using microorganism
JPH11128665A (en) * 1997-10-24 1999-05-18 Chubu Ecotec Kk Treatment of malodorous gas and treatment device therefor
JP2003033625A (en) * 2001-07-24 2003-02-04 Seikow Chemical Engineering & Machinery Ltd Biological deodorizing method
JP2003033626A (en) * 2001-07-26 2003-02-04 Sumitomo Heavy Ind Ltd Apparatus and method for treating exhaust gas

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6344921A (en) * 1986-08-13 1988-02-25 Nisshin Oil Mills Ltd:The Method for deodorizing exhaust gas
JPH0587494U (en) * 1992-04-23 1993-11-26 新日本製鐵株式会社 Exhaust circulation type hot air dryer
JPH07144116A (en) * 1993-11-25 1995-06-06 Nippon Steel Corp Non-drain type deodorizing method of waste gas using microorganism
JPH11128665A (en) * 1997-10-24 1999-05-18 Chubu Ecotec Kk Treatment of malodorous gas and treatment device therefor
JP2003033625A (en) * 2001-07-24 2003-02-04 Seikow Chemical Engineering & Machinery Ltd Biological deodorizing method
JP2003033626A (en) * 2001-07-26 2003-02-04 Sumitomo Heavy Ind Ltd Apparatus and method for treating exhaust gas

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100894038B1 (en) * 2008-07-09 2009-04-22 (주)세종이엔지 A bad smell remover compensating temperature
WO2022075401A1 (en) * 2020-10-08 2022-04-14 株式会社ミライエ Deodorization treatment device and information collection system
CN115321786A (en) * 2022-09-16 2022-11-11 滨州市生态环境服务中心 Sludge waste gas comprehensive treatment system

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