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JP2004358354A - Biological deodorizing device and biological deodorizing method - Google Patents

Biological deodorizing device and biological deodorizing method Download PDF

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Publication number
JP2004358354A
JP2004358354A JP2003159755A JP2003159755A JP2004358354A JP 2004358354 A JP2004358354 A JP 2004358354A JP 2003159755 A JP2003159755 A JP 2003159755A JP 2003159755 A JP2003159755 A JP 2003159755A JP 2004358354 A JP2004358354 A JP 2004358354A
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carrier layer
biological carrier
biological
water
layer
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Kiyohito Chikasawa
清仁 近沢
Shigetoshi Oshima
重利 大島
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Kurita Water Industries Ltd
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Kurita Water Industries Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
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Abstract

【課題】複数の生物担体層を備えた生物脱臭装置において、生物担体層ごとに給水を受ける量が互いに異なる場合でも、良好な耐久性を有するものを提供する。
【解決手段】第一の生物担体層3と、該第一の生物担体層3より多い量の給水を受ける第二の生物担体層4と、を備え、該第二の生物担体層4が、前記第一の生物担体層3の素材より、受水量による経年変化の小さい素材で形成されている。このため、前記生物脱臭装置1全体としての耐久性が向上し、長期間にわたって安定した脱臭性能が維持される。
【選択図】 図1
An object of the present invention is to provide a biological deodorizing apparatus having a plurality of biological carrier layers, which has good durability even when the amount of water supplied to each biological carrier layer is different from each other.
A first biological carrier layer (3) and a second biological carrier layer (4) receiving a larger amount of water supply than the first biological carrier layer (3), wherein the second biological carrier layer (4) The material of the first biological carrier layer 3 is formed of a material that is less likely to change over time due to the amount of water received. For this reason, the durability of the biological deodorizing device 1 as a whole is improved, and stable deodorizing performance is maintained over a long period of time.
[Selection diagram] Fig. 1

Description

【0001】
【発明の属する技術分野】
本発明は、アンモニアや硫黄系臭気等の悪臭成分を含む排ガスを、微生物の働きによって脱臭処理するための、生物脱臭装置に関するものである。
【0002】
【従来の技術】
産業排水や下水等の処理施設で発生する臭気ガスを脱臭処理するための装置として、微生物による臭気成分の分解作用を利用する生物脱臭装置が知られている。この生物脱臭装置は、微生物を担持した通気性充填材を、処理塔内に充填したものである。処理対象となる臭気ガスは、前記処理塔内に導入され、前記充填材層を通過することによって、前記充填材に付着している微生物の酸化分解作用等を受けて脱臭される。
【0003】
ところで、前記充填材層は、その表面に生息する微生物の活性を保つ観点から、湿潤状態に保持しておく必要がある。このため、前記充填材層に水分を供給するための散水手段を設け、連続的又は間欠的に前記充填材層に給水を行うことによって、安定した脱臭性能の保持が図られている。また、前記散水手段による散水は、微生物の酸化作用によって生じた硫黄酸化物を、前記充填層から除去する作用をも奏する。したがって、前記処理対象ガスの臭気濃度が高い場合には、微生物の酸化作用によって生ずる硫黄酸化物の生成量に応じて、前記充填層への散水量を増やすことが望ましい。
【0004】
したがって、前記充填材としては、良好な保水性、通気性及び通水性を有すること、水を含んだときにつぶれない程度の強度を有すること等、様々な特性が要求される。これらの特性を備えた充填材として、従来、活性炭、ゼオライト、多孔質セラミック、ピート(天然繊維性有機物質)等の天然素材のほか、合成樹脂又は合成繊維等の人工素材も用いられている(特許文献1、2参照)。
【0005】
【特許文献1】
特公平7−4504号
【0006】
【特許文献2】
特開平7−303833号
【0007】
【発明が解決しようとする課題】
しかしながら、前記素材の内、活性炭、ゼオライト、多孔質セラミック等は、水を含んでもつぶれにくい、十分な強度を有する半面、重量が嵩むので、据付重量が大きくなる等の欠点がある。
【0008】
一方、ピート、合成樹脂又は合成繊維は、軽量であり、多くの点で前記充填材として優れた特性を有する半面、荷重に対する強度が小さく、長期的に多くの散水を繰り返すと、前記充填材が経年変化を生じ易い等の問題がある。特に、柔軟な合成樹脂製又は合成繊維製の充填材を上下方向に複数層備え、該複数の充填材層ごとに前記散水手段を設けている場合には、上段の充填材層に散水された水が下段の充填材層へと順次滴下して行くので、下段の充填材層ほど多くの散水を受ける結果となる。このため、長期間使用していると、下段の充填材層が保水による自重増加に耐えきれなくなり、該充填材層が次第に圧密化して通気抵抗が増大し、臭気ガスの処理効率が低下してしまう等の問題があった。
【0009】
本発明は、前記のような事情に鑑みてなされたもので、複数の生物担体層を備えた生物脱臭装置において、生物担体層ごとに給水を受ける量が互いに異なる場合でも良好な耐久性を有する、生物脱臭装置及び生物脱臭方法を提供しようとするものである。
【0010】
【課題を解決するための手段】
前記課題を解決するため、本発明に係る生物脱臭装置は、第一の生物担体層と、該第一の生物担体層より大きな荷重を受ける第二の生物担体層と、を備え、該第二の生物担体層が、前記第一の生物担体層の素材より、耐荷重性の良好な素材で形成されることを特徴とするものである(請求項1)。
【0011】
前記生物脱臭装置において、前記第二の生物担体層は、前記第一の生物担体層よりも大きな荷重を受けるが、該第一の生物担体層の素材よりも、耐荷重性の良好な素材で形成されているので、前記生物脱臭装置全体としての耐久性が向上し、長期間にわたって安定した脱臭性能が維持される。
【0012】
また、本発明の他の実施の形態に係る生物脱臭装置は、第一の生物担体層と、該第一の生物担体層より多い量の給水を受ける第二の生物担体層と、を備え、該第二の生物担体層が、前記第一の生物担体層の素材より、受水量による経年変化の小さい素材で形成されることを特徴とするものである(請求項2)。
【0013】
前記生物脱臭装置において、前記第二の生物担体層は、前記第一の生物担体層よりも多い量の給水を受けるが、該第一の生物担体層の素材よりも、受水量による経年変化の小さい素材で形成されているので、前記生物脱臭装置全体としての耐久性が向上し、長期間にわたって安定した脱臭性能が維持される。
【0014】
本発明の他の実施の形態に係る生物脱臭装置は、通気性及び通水性を有する第一の生物担体層と、該第一の生物担体層に散水するための第一の散水手段と、通気性及び通水性を有するとともに前記第一の生物担体層からの滴下水を被る第二の生物担体層と、該第二の生物担体層に散水するための第二の散水手段と、を備え、前記第二の生物担体層が、前記第一の生物担体層の素材より、受水量が多くても圧密化しにくい素材で形成されることを特徴とするものである(請求項3)。
【0015】
前記生物脱臭装置において、前記第一の生物担体層は、前記第一の散水手段による散水を受け、前記第二の生物担体層は、前記第二の散水手段による散水を受ける。加えて、前記第二の生物担体層は、前記第一の生物担体層からの滴下水も被る。このため、前記第二の散水手段による散水量が、前記第一の散水手段による散水量と同じ場合には、前記第二の生物担体層の方が、前記第一の生物担体層より多くの散水を受けることになり、散水によって受ける負荷が相対的に大きいことになる。しかし、前記第二の生物担体層は、前記第一の生物担体層の素材よりも、受水量が多くても圧密化しにくい素材で形成されているので、前記生物脱臭装置全体としての耐久性が向上し、長期間にわたって安定した脱臭性能が維持される。
【0016】
前記第一の生物担体層及び前記第二の生物担体層のそれぞれの素材として、具体的にどのようなものを用いるかについて限定はないが、好適な実施の一形態として、前記第一の生物担体層が、天然繊維状有機物質、合成樹脂又は合成繊維の中から選択された少なくとも一種類の素材で形成され、前記第二の生物担体層が、活性炭、ゼオライト又は多孔質セラミックの中から選択された少なくとも一種類の素材で形成されたものとすることもできる(請求項4)。
【0017】
一方、本発明に係る生物脱臭方法は、第一の生物担体層より大きな荷重を受ける第二の生物担体層として、前記第一の生物担体層の素材より強度の高い素材を用いて脱臭を行うことを特徴としている(請求項5)。
【0018】
【発明の実施の形態】
以下、添付図面を参照して、本発明の好適な一実施の形態について説明する。
【0019】
図1は、本発明の一実施の形態に係る生物脱臭装置の全体構成を示す概略図である。
【0020】
図1に示すように、本実施の形態に係る生物脱臭装置1は、気密に閉じられた処理塔2を備え、該処理塔2の内部には、第一の生物担体層としての上段充填材層3と、第二の生物担体層としての下段充填材層4とが、相互間に間隔を開けて配設されている。前記上段充填材層3と、前記下段充填材層4は、それぞれ、微生物を担持した充填材(生物担体)で形成されていて、いずれも、良好な通気性および通水性を備えている。前記各充填材層3,4は、前記処理塔2の内部に固定された通気性および通水性を有する棚5,6によって、それぞれ支持されている。
【0021】
前記処理塔2には、前記下段充填材層4より低い位置に、処理対象ガスの導入管7が接続されるとともに、前記上段充填材層3より高い位置に、処理済ガスの排出管8が接続されている。アンモニアや硫黄系臭気を含む処理対象ガスは、前記ガス導入管7を介して前記処理塔2内の底部に導入され、前記下段充填材層4、前記上段充填材層3の順で上向きに通過して、処理済ガスとなって前記ガス排出管8を介して取り出される。前記処理対象ガスは、前記処理塔2内における上方への流通過程で、前記各充填材層4,3を構成する充填材に担持された微生物に接触することで、該微生物による酸化分解作用等を受けて、脱臭される。
【0022】
前記生物脱臭装置1において、充填材層容積は、例えば、空間速度150〜540m/m・時またはガス接触時間を10〜24秒程度とし、充填材層平面積は、例えば、空塔速度0.05〜0.3m/秒程度とする。
【0023】
なお、本実施の形態では、前記充填材層4,3に対して上向きに前記処理対象ガスを流すようにしているが、前記ガス導入管7と前記ガス排出管8を、図1の例とは上下逆に配設して、前記処理対象ガスを下向きに流すようにしても良い。
【0024】
前記生物脱臭装置1は、前記各充填材層3,4に対応して、散水手段としての散水管9,10をそれぞれ備えている。これは、前記各充填材層3,4を湿潤状態に保持し、該各充填材層3,4に付着している微生物の活性を高く維持するためである。前記散水管は、前記上段充填材層3に給水を行うための第一の上段散水管9と、前記下段充填材層4に給水を行うための第二の下段散水管10と、からなる。各散水管9,10には、スプレーノズルが所定間隔で配設されていて、ポンプPにより散水本管11を介して、前記各散水管9,10に、同時に等量の給水が行われる。前記各充填材層3,4への散水は、連続的に行っても間欠的に行っても良い。
【0025】
本実施の形態では、前記上段散水管9から前記上段充填材層3へ向けて散水された水は、該上段充填材層3中を流下して、前記下段充填材層4へと滴り落ちる。このため、該下段充填材層4は、前記下段散水管10からの散水に加えて、前記上段散水管9からも水分供給を受けることになり、前記上段充填材層3よりも大きな荷重を受ける結果となる。そこで、前記下段充填材層4を、前記上段充填材層3の素材よりも、受水量による経年変化の小さい素材、すなわち、受水量が多くても圧密化しにくい、耐荷重性の良好な、強度の高い素材で形成し、相対的に多量の給水を受ける前記下段充填材層4の、長期受水による圧密化を防止している。
【0026】
具体的には、前記上段充填材層3を、例えば、天然繊維状有機物質(ピート)、合成樹脂又は合成繊維の中から選択された少なくとも一種類の素材で形成する。より具体的には、前記上段充填材層3として、ピートや合成樹脂や合成繊維からなる適当な大きさの充填材を層状に集合せしめたものを用いる。合成樹脂の例として、発泡ポリスチレン、発泡ポリプロピレン、発泡ポリウレタン、ポリビニルアルコール等を挙げることができ、合成繊維の例として、ポリプロピレン、ポリ塩化ビニリデン等を挙げることができる。
【0027】
一方、前記下段充填材層4は、例えば、活性炭、ゼオライト又は多孔質セラミックの中から選択された少なくとも一種類の素材で形成する。これらの素材は、比較的重量は嵩むものの、強度が高く耐荷重性が良好であるので、前記下段充填材層4の構成素材として用いるのに適している。
【0028】
なお、前記下段充填材層4は、要求される強度をその素材自体が有していれば十分であり、その材質について限定するものではない。
【0029】
本実施の形態に係る前記生物脱臭装置1によれば、多量の散水により前記上段充填材層3よりも大きな荷重を受ける前記下段充填材層4を、耐荷重性の良好な、強度が高い素材で形成しているため、長期にわたって、前記下段充填材層4の圧密化および通気抵抗の増大が防止される。よって、前記生物脱臭装置1全体としての安定した脱臭性能を長期間維持することができる。したがってまた、従来必要とされていた、圧密化及び通気抵抗の増大による下段充填材層の取り替えにかかるコストや手間を省くことができる。
【0030】
なお、本実施の形態では、複数の充填材層を有する生物脱臭装置の最も単純な構成として、上下二つの充填材層を備えたものを示しているが、充填材層の数は、それより多くても良い。また、充填材層が上下三段以上ある場合には、散水管は、それぞれの充填材層に対応して配設しても良いし、いくつかの充填材層群ごとに散水管を配設しても良い。
【0031】
【実施例】
次に、実施例および比較例を挙げて、本発明をより具体的に説明する。
【0032】
表1は、本実施例に係る生物脱臭装置の概要を示している。
【0033】
【表1】

Figure 2004358354
本実施例に係る生物脱臭装置は、それぞれ充填高さ500mmの上下二段の充填材層を備え、これらの充填材層のそれぞれに対応して、散水手段が配設されている。上段充填材層(第一の充填材層)は、ポリ塩化ビニリデン製板状充填材を多数集合せしめて形成したものである。一方、下段充填材層(第二の充填材層)は、多孔質セラミック製のものである。
【0034】
前記各散水手段による単位時間当たりの散水量および散水時間は、上段、下段の充填材層とも同じとしたが、上段充填材層へ供給された水は、該上段充填材層内を流下して下段充填材層、さらには、処理塔の底部へと滴下するようになっているので、各充填材層へと供給される合計水量は、上段1に対して下段が2倍となる。
【0035】
また、前記生物脱臭装置は、同じ構成のものが二つ準備され、一つを、散水量20L/日で使用し、もう一つを、散水量160L/日で使用した。
【0036】
一方、比較例は、表1における下段充填材層を、上段充填材層と同じくポリ塩化ビニリデン製板状充填材で形成した以外は、構成及び使用条件とも、本実施例のものと同じである。
【0037】
本実施例に係る二機の生物脱臭装置と、比較例の二機の生物脱臭装置とを、共に約3年間使用し、使用開始直後と3年後に、それぞれの装置における下段充填材層の充填高さと通気抵抗とを測定した。その結果は、表2に示す通りであった。
【0038】
【表2】
Figure 2004358354
本実施例に係るものにおいては、散水量の違いによって、前記下段充填材層の充填高さ、通気抵抗とも、ほとんど変化がなかった。このことは、多量の散水を長期間受けても、前記下段充填材層に圧密化が起こらず、通気性能が良好に維持されたことを示している。
【0039】
一方、比較例に係るものにおいては、散水量が少ない20L/日のもので、下段充填材層の充填高さが98%に減少し、通気抵抗が107%に増加した。また、散水量が160L/日のものは、下段充填材層の充填高さが92%に減少し、通気抵抗が127%に増加した。このように、比較例のものでは、散水量が多くなるほど、通気性能の悪化が顕著となった。
【図面の簡単な説明】
【図1】本発明の一実施の形態に係る生物脱臭装置の全体構成を示す概略図である。
【符号の説明】
3 第一の生物担体層(上段充填材層)
4 第二の生物担体層(下段充填材層)
9 第一の散水手段(上段散水管)
10 第二の散水手段(下段散水管)[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a biological deodorization apparatus for deodorizing exhaust gas containing malodorous components such as ammonia and sulfur-based odor by the action of microorganisms.
[0002]
[Prior art]
2. Description of the Related Art As a device for deodorizing odorous gas generated in a treatment facility such as industrial wastewater or sewage, a biological deodorization device utilizing the decomposition action of odor components by microorganisms is known. In this biological deodorizing apparatus, a gas-permeable packing material carrying microorganisms is filled in a treatment tower. The odor gas to be treated is introduced into the treatment tower, passes through the filler layer, and is deodorized by oxidative decomposition of microorganisms attached to the filler.
[0003]
By the way, it is necessary to keep the filler layer in a wet state from the viewpoint of maintaining the activity of microorganisms living on the surface. Therefore, by providing a watering means for supplying water to the filler layer and continuously or intermittently supplying water to the filler layer, stable deodorization performance is maintained. Watering by the watering means also has an effect of removing sulfur oxides generated by the oxidizing action of microorganisms from the packed bed. Therefore, when the odor concentration of the gas to be treated is high, it is desirable to increase the amount of water sprayed to the packed bed according to the amount of sulfur oxide generated by the oxidizing action of microorganisms.
[0004]
Accordingly, the filler is required to have various properties, such as having good water retention, air permeability and water permeability, and having such strength that it does not collapse when containing water. Conventionally, as a filler having these characteristics, natural materials such as activated carbon, zeolite, porous ceramics and peat (natural fibrous organic substance) have been used, as well as artificial materials such as synthetic resins and synthetic fibers ( Patent Documents 1 and 2).
[0005]
[Patent Document 1]
Tokuho 7-4504 [0006]
[Patent Document 2]
JP-A-7-303833
[Problems to be solved by the invention]
However, among the above-mentioned materials, activated carbon, zeolite, porous ceramics and the like have disadvantages such as being hard to be crushed by containing water, and having sufficient strength, but having a large installation weight because they are heavy.
[0008]
On the other hand, peat, synthetic resin or synthetic fiber is lightweight, has many properties in terms of the filler as a filler, but has a small strength against load, and when repeatedly watering for a long time, the filler becomes There are problems such as aging. In particular, when a plurality of flexible synthetic resin or synthetic fiber fillers are provided in the vertical direction, and the watering means is provided for each of the plurality of filler layers, water was sprayed on the upper filler layer. Since water successively drops to the lower filler layer, the lower filler layer receives more water spray. For this reason, when used for a long time, the lower filler layer cannot withstand the increase in its own weight due to water retention, the filler layer gradually becomes denser, the ventilation resistance increases, and the efficiency of odor gas treatment decreases. There were problems such as getting lost.
[0009]
The present invention has been made in view of the above circumstances, and in a biological deodorizing apparatus including a plurality of biological carrier layers, it has good durability even when the amount of water supplied to each biological carrier layer is different from each other. And a biological deodorizing apparatus and a biological deodorizing method.
[0010]
[Means for Solving the Problems]
In order to solve the above problem, a biological deodorization apparatus according to the present invention includes a first biological carrier layer, and a second biological carrier layer that receives a larger load than the first biological carrier layer, Is characterized by being formed of a material having better load-bearing capacity than the material of the first biological carrier layer (Claim 1).
[0011]
In the biological deodorizing device, the second biological carrier layer receives a larger load than the first biological carrier layer, but is made of a material having a higher load resistance than the material of the first biological carrier layer. Since it is formed, the durability of the whole biological deodorizing device is improved, and stable deodorizing performance is maintained for a long period of time.
[0012]
Further, the biological deodorizing apparatus according to another embodiment of the present invention includes a first biological carrier layer, a second biological carrier layer receiving a larger amount of water than the first biological carrier layer, The second biological carrier layer is formed of a material that is less aging-dependent on the amount of water received than the material of the first biological carrier layer (claim 2).
[0013]
In the biological deodorizing device, the second biological carrier layer receives a larger amount of water supply than the first biological carrier layer, but more than the material of the first biological carrier layer, the aging due to the amount of water received. Since it is made of a small material, the durability of the whole biological deodorizing device is improved, and stable deodorizing performance is maintained for a long period of time.
[0014]
The biological deodorizing apparatus according to another embodiment of the present invention comprises a first biological carrier layer having air permeability and water permeability, a first watering means for watering the first biological carrier layer, A second biological carrier layer having the property and water permeability and receiving dripping water from the first biological carrier layer, and a second watering means for watering the second biological carrier layer, The second biological carrier layer is formed of a material that is less likely to be compacted even when receiving a larger amount of water than the material of the first biological carrier layer (Claim 3).
[0015]
In the biological deodorizing device, the first biological carrier layer receives watering by the first watering means, and the second biological carrier layer receives watering by the second watering means. In addition, the second biological carrier layer also receives dripping water from the first biological carrier layer. For this reason, when the watering amount by the second watering means is the same as the watering amount by the first watering means, the second biological carrier layer is more than the first biological carrier layer. Watering is performed, and the load received by watering is relatively large. However, since the second biological carrier layer is formed of a material that is less likely to be compacted even when receiving a larger amount of water than the material of the first biological carrier layer, the durability of the entire biological deodorization device is low. It is improved and stable deodorizing performance is maintained over a long period of time.
[0016]
Although there is no particular limitation on what material is used as each material of the first biological carrier layer and the second biological carrier layer, as a preferred embodiment, the first biological carrier layer The carrier layer is formed of at least one material selected from natural fibrous organic substances, synthetic resins or synthetic fibers, and the second biological carrier layer is selected from activated carbon, zeolite or porous ceramic. It may be formed of at least one type of material (claim 4).
[0017]
On the other hand, the biological deodorization method according to the present invention performs deodorization using a material having a higher strength than the material of the first biological carrier layer, as the second biological carrier layer receiving a larger load than the first biological carrier layer. (Chart 5).
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.
[0019]
FIG. 1 is a schematic diagram showing the entire configuration of the biological deodorizing apparatus according to one embodiment of the present invention.
[0020]
As shown in FIG. 1, a biological deodorizing apparatus 1 according to the present embodiment includes a treatment tower 2 that is hermetically closed, and inside the treatment tower 2, an upper packing material as a first biological carrier layer. The layer 3 and the lower filler layer 4 as a second biological carrier layer are arranged with a space therebetween. The upper filler layer 3 and the lower filler layer 4 are each formed of a filler (biological carrier) supporting microorganisms, and both have good air permeability and water permeability. The filler layers 3 and 4 are supported by gas-permeable and water-permeable shelves 5 and 6 fixed inside the treatment tower 2, respectively.
[0021]
An inlet pipe 7 for the gas to be treated is connected to the processing tower 2 at a position lower than the lower packing material layer 4, and a discharge pipe 8 for the processed gas is provided at a position higher than the upper packing material layer 3. It is connected. A gas to be treated containing ammonia or sulfur-based odor is introduced into the bottom of the treatment tower 2 through the gas introduction pipe 7 and passes upward in the order of the lower filler layer 4 and the upper filler layer 3. Then, it is taken out through the gas discharge pipe 8 as a processed gas. The gas to be treated comes into contact with the microorganisms carried on the filler constituting each of the filler layers 4 and 3 during the upward flow in the treatment tower 2, thereby causing oxidative decomposition and the like by the microorganisms. In response, it is deodorized.
[0022]
In the biological deodorization device 1, the filler layer volume, for example, the space velocity 150~540m 3 / m 3 · hour or gas contact time is about 10 to 24 seconds, the plane area filler layer, for example, the superficial velocity It is about 0.05 to 0.3 m / sec.
[0023]
In the present embodiment, the gas to be treated is caused to flow upward with respect to the filler layers 4 and 3. However, the gas introduction pipe 7 and the gas discharge pipe 8 are different from those in FIG. May be arranged upside down so that the gas to be treated flows downward.
[0024]
The biological deodorizing apparatus 1 is provided with water sprinkling pipes 9 and 10 as water sprinkling means corresponding to the respective filler layers 3 and 4. This is because the filler layers 3 and 4 are kept in a wet state, and the activity of microorganisms attached to the filler layers 3 and 4 is maintained at a high level. The sprinkler pipe includes a first upper sprinkler pipe 9 for supplying water to the upper filler layer 3 and a second lower sprinkler pipe 10 for supplying water to the lower filler layer 4. Spray nozzles are arranged at predetermined intervals in the water sprinkling pipes 9 and 10, and an equal amount of water is simultaneously supplied to the water sprinkling pipes 9 and 10 by the pump P via the water sprinkling main pipe 11. Sprinkling of water on the filler layers 3 and 4 may be performed continuously or intermittently.
[0025]
In the present embodiment, the water sprinkled from the upper water sprinkling pipe 9 toward the upper packing material layer 3 flows down in the upper packing material layer 3 and drops down to the lower packing material layer 4. For this reason, in addition to the water spray from the lower water sprinkling pipe 10, the lower packing material layer 4 receives a water supply from the upper water sprinkling pipe 9, and receives a larger load than the upper packing material layer 3. Results. Therefore, the lower filler layer 4 is made of a material that is less aging-dependent due to the amount of water received than the material of the upper filler layer 3, that is, hard to consolidate even if the amount of water received is large, has good load resistance, and has strength. The lower filler layer 4 formed of a material having a high water content and receiving a relatively large amount of water is prevented from being consolidated due to long-term water receiving.
[0026]
Specifically, the upper filler layer 3 is formed of, for example, at least one kind of material selected from natural fibrous organic substances (peat), synthetic resins, and synthetic fibers. More specifically, the upper filler layer 3 is formed by collecting fillers of appropriate size made of peat, synthetic resin or synthetic fiber in layers. Examples of the synthetic resin include expanded polystyrene, expanded polypropylene, expanded polyurethane, and polyvinyl alcohol. Examples of the synthetic fiber include polypropylene and polyvinylidene chloride.
[0027]
On the other hand, the lower filler layer 4 is formed of, for example, at least one material selected from activated carbon, zeolite, and porous ceramic. Although these materials are relatively heavy in weight, they have high strength and good load resistance, and are therefore suitable for use as a constituent material of the lower filler layer 4.
[0028]
The lower filler layer 4 is sufficient if the material itself has the required strength, and the material is not limited.
[0029]
According to the biological deodorizing apparatus 1 according to the present embodiment, the lower filler layer 4 which receives a larger load than the upper filler layer 3 due to a large amount of water is used as a material having good load resistance and high strength. Since the lower filler layer 4 is formed over a long period of time, it is possible to prevent the lower filler layer 4 from being densified and increase the ventilation resistance. Therefore, the stable deodorizing performance of the biological deodorizing apparatus 1 as a whole can be maintained for a long time. Therefore, the cost and labor required for replacing the lower filler layer due to the increase in the consolidation and the ventilation resistance, which have been conventionally required, can be saved.
[0030]
Note that, in the present embodiment, the simplest configuration of the biological deodorizing device having a plurality of filler layers is shown as having the two upper and lower filler layers, but the number of the filler layers is smaller than that. May be more. If there are three or more filler layers, the water sprinkling pipes may be arranged corresponding to the respective filler layers, or the water sprinkling pipes may be arranged for each of several filler layer groups. You may.
[0031]
【Example】
Next, the present invention will be described more specifically with reference to examples and comparative examples.
[0032]
Table 1 shows an outline of the biological deodorizing apparatus according to the present embodiment.
[0033]
[Table 1]
Figure 2004358354
The biological deodorizing apparatus according to the present embodiment includes two upper and lower filler layers each having a filling height of 500 mm, and water sprinkling means is provided for each of these filler layers. The upper filler layer (first filler layer) is formed by assembling a large number of polyvinylidene chloride plate-like fillers. On the other hand, the lower filler layer (second filler layer) is made of a porous ceramic.
[0034]
The watering amount and watering time per unit time by each of the watering means are the same for the upper and lower filler layers, but the water supplied to the upper filler layer flows down in the upper filler layer. Since the lower filler layer is further dropped to the bottom of the treatment tower, the total amount of water supplied to each filler layer is twice as large in the upper stage 1 as in the upper stage.
[0035]
In addition, two biological deodorizing devices having the same configuration were prepared, one was used at a watering rate of 20 L / day, and the other was used at a watering amount of 160 L / day.
[0036]
On the other hand, the comparative example is the same as that of the present example in the configuration and use conditions except that the lower filler layer in Table 1 was formed of a polyvinylidene chloride plate-like filler like the upper filler layer. .
[0037]
The two biological deodorizing apparatuses according to the present example and the two biological deodorizing apparatuses according to the comparative example were used for about three years, and immediately after the start of use and three years later, the filling of the lower filler layer in each apparatus was performed. Height and airflow resistance were measured. The results were as shown in Table 2.
[0038]
[Table 2]
Figure 2004358354
In the case of this example, there was almost no change in the filling height of the lower filler layer and the airflow resistance due to the difference in the amount of water spray. This indicates that even when a large amount of water was sprayed for a long period of time, no consolidation occurred in the lower filler layer, and the ventilation performance was maintained well.
[0039]
On the other hand, in the case of the comparative example, the amount of water sprayed was small, that is, 20 L / day, the filling height of the lower filler layer was reduced to 98%, and the ventilation resistance was increased to 107%. In the case of the spraying amount of 160 L / day, the filling height of the lower filler layer was reduced to 92%, and the ventilation resistance was increased to 127%. As described above, in the case of the comparative example, as the amount of water sprayed increased, the deterioration of the ventilation performance became remarkable.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing an entire configuration of a biological deodorization apparatus according to one embodiment of the present invention.
[Explanation of symbols]
3 First biological carrier layer (upper filler layer)
4 Second biological carrier layer (lower filler layer)
9 First watering means (upper sprinkling pipe)
10 Second watering means (lower watering pipe)

Claims (5)

第一の生物担体層と、該第一の生物担体層より大きな荷重を受ける第二の生物担体層と、を備え、該第二の生物担体層が、前記第一の生物担体層の素材より、耐荷重性の良好な素材で形成されている、生物脱臭装置。A first biological carrier layer, and a second biological carrier layer that receives a greater load than the first biological carrier layer, wherein the second biological carrier layer is formed of a material of the first biological carrier layer. A biological deodorizing device made of a material with good load bearing capacity. 第一の生物担体層と、該第一の生物担体層より多い量の給水を受ける第二の生物担体層と、を備え、該第二の生物担体層が、前記第一の生物担体層の素材より、受水量による経年変化の小さい素材で形成されている、生物脱臭装置。A first biological carrier layer and a second biological carrier layer receiving a greater amount of water supply than the first biological carrier layer, wherein the second biological carrier layer is formed of the first biological carrier layer. Biological deodorizer made of material that is less likely to change over time due to the amount of water received than material. 通気性及び通水性を有する第一の生物担体層と、該第一の生物担体層に散水するための第一の散水手段と、通気性及び通水性を有するとともに前記第一の生物担体層からの滴下水を被る第二の生物担体層と、該第二の生物担体層に散水するための第二の散水手段と、を備え、前記第二の生物担体層が、前記第一の生物担体層の素材より、受水量が多くても圧密化しにくい素材で形成されている、生物脱臭装置。A first biological carrier layer having air permeability and water permeability, a first watering means for watering the first biological carrier layer, and a first biological carrier layer having air permeability and water permeability, and A second biological carrier layer to cover the dropping water of, and a second watering means for watering the second biological carrier layer, wherein the second biological carrier layer, the first biological carrier Biological deodorizer made of a material that is less likely to consolidate even if it receives more water than the material of the layer. 前記第一の生物担体層が、天然繊維状有機物質、合成樹脂又は合成繊維の中から選択された少なくとも一種類の素材で形成され、前記第二の生物担体層が、活性炭、ゼオライト又は多孔質セラミックの中から選択された少なくとも一種類の素材で形成されている、請求項1,2又は3に記載の生物担体装置。The first biological carrier layer is formed of at least one material selected from natural fibrous organic substances, synthetic resins or synthetic fibers, and the second biological carrier layer is activated carbon, zeolite or porous. The biocarrier device according to claim 1, 2, or 3, wherein the biocarrier device is formed of at least one material selected from ceramics. 第一の生物担体層より大きな荷重を受ける第二の生物担体層として、前記第一の生物担体層の素材より強度の高い素材を用いて脱臭を行う、生物脱臭方法。A biological deodorization method, wherein a material having a higher strength than the material of the first biological carrier layer is used as the second biological carrier layer which receives a greater load than the first biological carrier layer.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104815551A (en) * 2015-05-21 2015-08-05 山东格林检测股份有限公司 Treatment method and treatment device for garbage odor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104815551A (en) * 2015-05-21 2015-08-05 山东格林检测股份有限公司 Treatment method and treatment device for garbage odor

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