JPH03242224A - Filter bed-type biological deodorizer - Google Patents
Filter bed-type biological deodorizerInfo
- Publication number
- JPH03242224A JPH03242224A JP2035931A JP3593190A JPH03242224A JP H03242224 A JPH03242224 A JP H03242224A JP 2035931 A JP2035931 A JP 2035931A JP 3593190 A JP3593190 A JP 3593190A JP H03242224 A JPH03242224 A JP H03242224A
- Authority
- JP
- Japan
- Prior art keywords
- filter bed
- liq
- membrane
- type biological
- bed section
- 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
- 230000001877 deodorizing effect Effects 0.000 claims abstract description 21
- 239000012528 membrane Substances 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims description 17
- 244000005700 microbiome Species 0.000 claims description 15
- 238000004332 deodorization Methods 0.000 claims description 7
- 239000012466 permeate Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 31
- 230000003100 immobilizing effect Effects 0.000 abstract 1
- 235000019645 odor Nutrition 0.000 description 26
- 239000007789 gas Substances 0.000 description 13
- 230000000813 microbial effect Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- WQOXQRCZOLPYPM-UHFFFAOYSA-N dimethyl disulfide Chemical compound CSSC WQOXQRCZOLPYPM-UHFFFAOYSA-N 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- QMMFVYPAHWMCMS-UHFFFAOYSA-N Dimethyl sulfide Chemical compound CSC QMMFVYPAHWMCMS-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- -1 nitrate ions Chemical class 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
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
Landscapes
- Treating Waste Gases (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は下水処理場や各種工場などにおいて発生する複
合臭気を除去する脱臭設備として用いるる床式生物脱臭
装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a floor-type biological deodorizing device used as deodorizing equipment for removing complex odors generated in sewage treatment plants and various factories.
従来の技術
第２図は従来のる床式生物脱臭装置の構成図である。第
２図において、生物脱臭塔１の内部にはる床部２が設け
られており５ろ床部２に脱臭に関与する微生物が固定さ
れている。このろ床部２の下方（又は上方）から供給さ
れる臭気を有する原ガス３はろ床部２を通過する間に微
生物によって脱臭されて、生物脱臭塔１の上部から処理
ガス４として脱臭ファン５によって取り出される。また
、生物脱臭塔１の下部には循環水槽６が形成され、この
循環水槽６の循環水７は、散水ポンプ８によって、ろ床
部２の上方に設けられた散水管９から散水されて、ろ床
部２への水分補給が行われるとともに、微生物によって
分解されてろ床部２に滞留する反応生成物（硫酸イオン
、硝酸イオンなど）が洗浄され、循環水槽６に流下する
。そして、反応生成物を含んだ循環水７は、循環水槽６
に供給される中和剤（苛性ソーダ等） １０によって中
和され、再び散水管９から散水される。１１は循環水槽
６に補給される補給水である。BACKGROUND OF THE INVENTION FIG. 2 is a block diagram of a conventional floor-type biological deodorizing device. In FIG. 2, a filter bed section 2 is provided inside the biological deodorization tower 1, and microorganisms involved in deodorization are immobilized on the filter bed section 2. The odor-laden raw gas 3 supplied from below (or above) the filter bed section 2 is deodorized by microorganisms while passing through the filter bed section 2, and is passed through the upper part of the biological deodorization tower 1 as a treated gas 4 to a deodorizing fan 5. retrieved by Further, a circulating water tank 6 is formed in the lower part of the biological deodorizing tower 1, and the circulating water 7 of this circulating water tank 6 is sprinkled with water from a watering pipe 9 provided above the filter bed part 2 by a watering pump 8. Water is supplied to the filter bed section 2, and reaction products (sulfate ions, nitrate ions, etc.) that are decomposed by microorganisms and remain in the filter bed section 2 are washed and flowed down into the circulating water tank 6. The circulating water 7 containing the reaction products is then transported to a circulating water tank 6.
The water is neutralized by a neutralizing agent (such as caustic soda) 10 supplied to the tank, and water is again sprayed from the water sprinkling pipe 9. Reference numeral 11 indicates makeup water to be supplied to the circulating water tank 6.
発明が解決しようとする課題
上記従来のる床式生物脱臭装置では、原ガス３中の難溶
解性臭気成分は、水中への溶解が律速さり、るためその
１度が急に上昇した場合には、処理しきれず、負荷変動
に弱いという問題を有していた。Problems to be Solved by the Invention In the above-mentioned conventional bed-type biological deodorizing device, the rate of dissolution of poorly soluble odor components in the raw gas 3 into water is limited, and therefore, when the degree of had the problem that it could not be processed completely and was susceptible to load fluctuations.
本発明は上記従来の問題を解決するもので１Ｍ溶溶解性
臭気骨の除去性能を向上させて、原ガスが通常濃度から
高濃度に上昇した場合にも対処し得る、負荷変動に強い
ろ床式生物脱臭装置を提供することを目的とする、もの
である。The present invention solves the above-mentioned conventional problems, improves the removal performance of 1M soluble odor bone, and makes it possible to cope with the case where the raw gas concentration increases from a normal concentration to a high concentration, and is resistant to load fluctuations. The purpose is to provide a type biological deodorizing device.
課題を解決するための手段
上記課題を解決するために本発明のる床式生物脱臭装置
は、脱臭に関与する微生物を固定したろ床部を有して供
給原ガス中の臭気成分を除去するろ床式生物脱臭装置に
おいで、前記ろ床部を前段ろ床部と後段ろ床部で構成し
、前記前段ろ床部と後段ろ床部に散水して流下した微生
物混合液を膜透過液と濃縮液に分離するろ過手段を設け
、前記前段ろ床部に前記膜透過液を間欠散水し、かつ前
記後段ろ床部に前記濃縮液を連続散水するように構成し
たことを特徴とするものである。Means for Solving the Problems In order to solve the above problems, the bed-type biological deodorizing device of the present invention has a filter bed portion on which microorganisms involved in deodorization are immobilized, and removes odor components from the feed gas. In a filter bed type biological deodorizing device, the filter bed section is composed of a front filter bed section and a rear filter bed section, and the microbial mixture liquid that is sprinkled on the front filter bed section and the rear filter bed section and flows down is treated as a membrane permeate liquid. and a concentrated liquid, and is configured to intermittently sprinkle the membrane-permeated liquid on the front filter bed, and continuously sprinkle the concentrated liquid on the rear filter bed. It is.
作用
上記構成により、まず、前段ろ床部では、微生物混合液
の膜透過液が間欠散水され、臭気成分が供給されて易溶
解性臭気成分に適合した微生物が多く馴養され、易溶解
性臭気成分と難溶解性臭気成分の一部とが分解除去され
る。次に、後段ろ床部では微生物混合液の濃縮液が連続
散水されて原ガスの難溶解性臭気成分が溶は込む溶媒量
を多くして溶は込み易くするとともに１Ｍ溶溶解性臭気
骨に適合した微生物が多く馴養され、前段ろ床部で分解
除去されなかった難溶解性臭気成分が効果的に残らず分
解除去されることになる。したがって、除去されにくい
難溶解性臭気成分の除去性能の向上により、臭気成分の
通常濃度から高濃度への多少の負荷変動に対しても充分
対処し得る、負荷変動に強いろ床式生物脱臭装置が得ら
れることになる。Effect With the above configuration, first, in the front stage filter bed part, the membrane-permeated liquid of the microbial mixture is intermittently sprinkled, the odor components are supplied, and many microorganisms that are compatible with the easily soluble odor components are acclimatized, and the easily soluble odor components are absorbed. and part of the hardly soluble odor components are decomposed and removed. Next, in the latter stage filter bed, a concentrated solution of the microbial mixture is continuously sprinkled to increase the amount of solvent in which the poorly soluble odor components of the raw gas are dissolved, making it easier for the solution to be incorporated, and to reduce the amount of 1M soluble odor components. Many compatible microorganisms are acclimatized, and hardly soluble odor components that were not decomposed and removed in the front stage filter bed are effectively decomposed and removed without remaining. Therefore, the filter bed type biological deodorizer is resistant to load fluctuations and can sufficiently cope with slight load fluctuations from normal concentrations to high concentrations of odorous components by improving the removal performance of poorly soluble odorous components that are difficult to remove. will be obtained.
実施例
以下、本発明の一実施例について図面を参照しながら説
明する。EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.
第１図は本発明の一実施例を示する床式生物脱臭装置の
構成図であり、従来例と同一の作用効果を奏するものに
は同一の符号を付してその説明を省略する。第１図にお
いて、生物脱臭塔２１の内部には前段と後段に分かれて
ろ床部２２，２３が設けられており、これらろ床部２２
，２３は多孔質のセラミック担体で形成されている。ま
た、これらろ床部２２．２３には微生物が固定化されて
おり、微生物は生物脱臭塔２１に供給される原ガス３に
応じて馴養される。FIG. 1 is a block diagram of a floor-type biological deodorizing apparatus showing an embodiment of the present invention, and parts having the same functions and effects as those of the conventional example are given the same reference numerals, and the explanation thereof will be omitted. In FIG. 1, inside the biological deodorizing tower 21, filter bed sections 22 and 23 are provided which are divided into a front stage and a rear stage.
, 23 are made of a porous ceramic carrier. Further, microorganisms are immobilized on these filter bed sections 22 and 23, and the microorganisms are adapted to the raw gas 3 supplied to the biological deodorization tower 21.
また、生物脱臭塔２１の下部には循環水槽６が形成され
ており、この循環水槽６の循環水である微生物混合液７
内に垂下された管は散水ポンプ８を介してろ過膜（ＵＦ
膜又はＭＦ膜）２４の濃縮水側２４ａに連通している。Further, a circulating water tank 6 is formed in the lower part of the biological deodorizing tower 21, and a microbial mixture liquid 7, which is the circulating water of this circulating water tank 6, is formed in the lower part of the biological deodorizing tower 21.
The pipe suspended inside is connected to a filtration membrane (UF) via a sprinkler pump 8.
It is connected to the concentrated water side 24a of the membrane (MF membrane or MF membrane) 24.
ろ過膜２４の、浮遊物を含む濃縮水側２４ａはバルブ２
７を介して、前段ろ床部２２と後段ろ床部２３の間に介
装された散水管２８に連通し、また、浮遊物を含まない
膜透過液側２４ｂはバルブ２５を介して前段ろ床部２２
の上方に設けられた散水管２６に連通している。The concentrated water side 24a containing suspended matter of the filtration membrane 24 is connected to the valve 2.
7, the membrane permeate side 24b, which does not contain suspended matter, is connected to the water sprinkler pipe 28 interposed between the front filter bed section 22 and the rear filter bed section 23 through a valve 25. Floor part 22
It communicates with a water sprinkler pipe 26 provided above.
さらに、原ガス３を生物脱臭塔２１の最上部から、前段
ろ床部２２、さらに後段ろ床部２３を通して送風し、後
段ろ床部２３の下部から脱臭ファン３０によって処理ガ
ス２９として取り出すように構成している。Further, the raw gas 3 is blown from the top of the biological deodorizing tower 21 through the front filter bed section 22 and further through the rear filter bed section 23, and is taken out as a treated gas 29 from the lower part of the rear filter bed section 23 by a deodorizing fan 30. It consists of
上記構成により、以下、その動作を説明する。The operation of the above configuration will be described below.
まず、循環水槽６内の微生物混合液７は、散水ポンプ８
によりろ過膜２４に供給されて、膜透過液と濃縮液に分
離される。前段ろ床部２２には、膜透過液がバルブ２５
により間欠的に散水管２６から散水され、原ガス３の通
過にともなって、前段ろ床部２２に易溶解性の臭気成分
（硫化水素など）と一部の難溶解性の臭気成分（メチル
メルカプタン、硫化メチル、二硫化メチルなど）が除去
される。これにより、前段のる床部にはそれに適した微
生物が多く馴養されることになる。First, the microbial mixture 7 in the circulating water tank 6 is transferred to the watering pump 8.
The liquid is supplied to the filtration membrane 24 and separated into a membrane permeate and a concentrated liquid. In the front stage filter bed section 22, the membrane permeate is supplied through a valve 25.
water is intermittently sprinkled from the water sprinkling pipe 26, and as the raw gas 3 passes through, easily soluble odor components (hydrogen sulfide, etc.) and some hardly soluble odor components (methyl mercaptan) are released into the front filter bed 22. , methyl sulfide, methyl disulfide, etc.) are removed. As a result, the floor section on which the front stage rests will be acclimatized with many suitable microorganisms.
また、後段ろ床部２３には、微生物混合液７の濃縮液が
バルブ２７により連続散水がなされるため、後段ろ床部
２３では難溶解性臭気成分が溶は込む溶媒量を多くする
ことができ、溶は込み易い状態がつくられる。このよう
にして後段ろ床部２３に主に難溶解性の臭気成分が供給
されることになり、それに適した、微生物が多く馴養さ
れることになる。In addition, since the concentrated solution of the microbial mixture 7 is continuously sprayed into the rear filter bed section 23 by the valve 27, it is possible to increase the amount of solvent in which poorly soluble odor components are dissolved in the rear filter bed section 23. This creates a condition where the melt can easily penetrate. In this way, hardly soluble odor components are mainly supplied to the rear filter bed section 23, and many suitable microorganisms are acclimatized thereto.
以上により、難溶解性臭気成分の除去性能は向上する。As a result of the above, the ability to remove poorly soluble odor components is improved.
したがって、生物脱臭塔２１の最上部より供給された複
合臭気成分を含む原ガス３は、前段ろ床部２２で、易溶
解性の臭気成分と難溶解性の臭気成分の一部がそれに適
した微生物によって分解除去される。さらに、前段ろ床
部２２で除去できなかった難溶解性臭気成分は、後段ろ
床部でそれに適した微生物により効果的に分解除去され
る。Therefore, the raw gas 3 containing complex odor components supplied from the top of the biological deodorization tower 21 is processed in the pre-stage filter bed section 22 so that some of the easily soluble odor components and the slightly soluble odor components are removed. Decomposed and removed by microorganisms. Furthermore, the hardly soluble odor components that could not be removed in the front filter bed section 22 are effectively decomposed and removed by suitable microorganisms in the rear filter bed section.
このようにして、溶解しにくいために除去されにくい難
溶解性臭気成分は、まず前段ろ床部２２でその一部が除
去された後、残りの難溶解性臭気成分はその除去性能の
高い後段ろ床部２３で効果的に分解除去されるので、原
ガス３の通常濃度から高濃度への多少の負荷変動に対し
ても残らず処理することができるものである。In this way, the poorly soluble odor components that are difficult to remove because they are difficult to dissolve are first partially removed in the front stage filter bed section 22, and then the remaining poorly soluble odor components are removed in the rear stage where the removal performance is high. Since it is effectively decomposed and removed in the filter bed section 23, it is possible to completely process even if there is a slight change in the load of the raw gas 3 from a normal concentration to a high concentration.
なお、本実施例では、前段ろ床部２２および後段ろ床部
２３への散水液は、それぞれ循環水槽６内の微生物混合
液の膜透過液および濃縮液が用いられており、難溶解性
の臭気成分の分解反応は循環水ＷＩ６内でも進行するた
め、循環水槽６の微生物混合液７内に空気又は処理ガス
２９で曝気すれば、臭気成分の除去性能の向上が期待で
きる。In this embodiment, the membrane-permeated liquid and concentrated liquid of the microbial mixture in the circulating water tank 6 are used as the watering liquid to the front filter bed part 22 and the rear filter bed part 23, respectively, and hardly soluble Since the decomposition reaction of odor components also proceeds in the circulating water WI6, if the microbial mixture 7 in the circulating water tank 6 is aerated with air or processing gas 29, it is expected that the removal performance of odor components will be improved.
また、後段ろ床部２３は担体の充填層の代わりにモレタ
ナを用いてもよい。Further, in the rear filter bed portion 23, moretana may be used instead of the packed bed of carrier.
発明の効果
以上のように本発明によれば、易溶解性臭気成分と一部
の難溶解性の臭気成分が前段ろ床部で分解除去された後
、残りの難溶解性臭気成分は、後段ろ床部で、難溶解性
臭気成分を溶は込み易い状態にするとともに、それに適
合した微生物を多く馴養して、効果的に難溶解性臭気成
分が分解除去されるため、除去されにくい難溶解性臭気
成分の除去性能を向上させることができ、臭気成分の通
常濃度から高濃度への多少の負荷変動に対しても充分対
処することができるものである。Effects of the Invention As described above, according to the present invention, after easily soluble odorous components and some hardly soluble odorous components are decomposed and removed in the front stage filter bed, the remaining hardly soluble odorous components are removed from the rear stage. In the filter bed, the poorly soluble odor components are made to be easily dissolved, and a large number of microorganisms that are compatible with them are acclimatized to effectively decompose and remove the poorly soluble odor components. It is possible to improve the removal performance of odorous components, and it is possible to sufficiently cope with a slight change in load from a normal concentration to a high concentration of odorous components.
第１図は本発明の一実施例を示する床式生物脱臭装置の
構成図、第２図は従来のる床式生物脱臭装置の構成図で
ある。
７・・微生物混合液、８・・・散水ポンプ、２２・・・
前段ろ床部、２３・・・後段ろ床部、２４・・ろ過膜、
２６．２８・・・散水管６FIG. 1 is a block diagram of a floor-type biological deodorizing apparatus showing an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional floor-type biological deodorizing apparatus. 7. Microbial mixture, 8. Water pump, 22.
Front stage filter bed part, 23... Rear stage filter bed part, 24... Filtration membrane,
26.28...Water pipe 6
Claims (1)
給原ガス中の臭気成分を除去するろ床式生物脱臭装置に
おいて、前記ろ床部を前段ろ床部と後段ろ床部で構成し
、前記前段ろ床部と後段ろ床部に散水して流下した微生
物混合液を膜透過液と濃縮液に分離するろ過手段を設け
、前記前段ろ床部に前記膜透過液を間欠散水し、かつ前
記後段ろ床部に前記濃縮液を連続散水するように構成し
たことを特徴とするろ床式生物脱臭装置。1. In a filter bed type biological deodorizing device that has a filter bed section on which microorganisms involved in deodorization are immobilized and removes odor components in the supplied raw gas, the filter bed section is arranged in a front stage filter bed part and a rear stage filter bed part. and a filtration means is provided for separating the microorganism mixture liquid that has been sprinkled onto the front filter bed section and the rear filter bed section into a membrane permeate liquid and a concentrated liquid, and the membrane permeate liquid is intermittently sprinkled on the front filter bed section. A filter bed type biological deodorizing device characterized in that the filter bed type biological deodorizing device is configured such that the concentrated liquid is continuously sprinkled on the rear stage filter bed portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2035931A JPH03242224A (en) | 1990-02-16 | 1990-02-16 | Filter bed-type biological deodorizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2035931A JPH03242224A (en) | 1990-02-16 | 1990-02-16 | Filter bed-type biological deodorizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03242224A true JPH03242224A (en) | 1991-10-29 |
Family
ID=12455776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2035931A Pending JPH03242224A (en) | 1990-02-16 | 1990-02-16 | Filter bed-type biological deodorizer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03242224A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07155534A (en) * | 1993-11-30 | 1995-06-20 | Fukui Pref Gov | Deodorizing device |
-
1990
- 1990-02-16 JP JP2035931A patent/JPH03242224A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07155534A (en) * | 1993-11-30 | 1995-06-20 | Fukui Pref Gov | Deodorizing device |
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