JP2589040B2 - Biological deodorization method - Google Patents
Biological deodorization methodInfo
- Publication number
- JP2589040B2 JP2589040B2 JP5015476A JP1547693A JP2589040B2 JP 2589040 B2 JP2589040 B2 JP 2589040B2 JP 5015476 A JP5015476 A JP 5015476A JP 1547693 A JP1547693 A JP 1547693A JP 2589040 B2 JP2589040 B2 JP 2589040B2
- Authority
- JP
- Japan
- Prior art keywords
- biological deodorization
- water
- tower
- biological
- deodorization tower
- 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.)
- Expired - Fee Related
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
Landscapes
- Treating Waste Gases (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、下水処理場等から発生
する悪臭物質を微生物により脱臭する生物脱臭方法に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a biological deodorizing method for deodorizing a malodorous substance generated from a sewage treatment plant by a microorganism.
【０００２】[0002]
【従来の技術】生物脱臭装置は、悪臭物質を分解する微
生物が固定化された担体を生物脱臭塔内に充填してお
き、その内部に悪臭物質を含むガス（以下、臭気ガスと
いう）を通して脱臭を行わせるものである。そして１段
の生物脱臭塔では完全な脱臭ができない場合には、生物
脱臭塔を直列に接続して生物脱臭を行わせている。2. Description of the Related Art In a biological deodorizing apparatus, a carrier in which microorganisms that decompose malodorous substances are immobilized is packed in a biological deodorizing tower, and deodorization is performed through a gas containing a malodorous substance (hereinafter referred to as odor gas). Is performed. When complete deodorization cannot be performed with a single-stage biological deodorization tower, biological deodorization towers are connected in series to perform biological deodorization.
【０００３】このような生物脱臭塔内には散水を必要と
するが、従来は未だ生物脱臭塔に散水してしない水（以
下、新水という）を一過式に散水するか、同一の生物脱
臭塔内で水を循環使用する方法が取られていた。ところ
が一過式の散水を行う場合には水の使用量が多大とな
り、また同一の生物脱臭塔内で水を循環使用する場合に
は散水中の悪臭物質あるいはそれが酸化された形の成分
の濃度が高くなり、一定以上の濃度となると脱臭性能が
劣化するという問題があった。[0003] Water must be sprinkled in such a biological deodorization tower, but water that has not yet been sprinkled in the biological deodorization tower (hereinafter referred to as fresh water) is sprayed in a transient manner or the same biological water is used. A method of circulating and using water in a deodorization tower has been adopted. However, in the case of one-time watering, the amount of water used is large, and in the case of circulating water in the same biological deodorization tower, the use of malodorous substances in the watering or components in an oxidized form There has been a problem that the deodorizing performance is deteriorated when the concentration becomes higher than a certain level.
【０００４】また生物脱臭塔は悪臭を分解する微生物の
活性を維持するためにpH制御を行っているが、薬品によ
るpH制御を行っていたために薬品コストが高くなり、特
に前段の生物脱臭塔においてはpHを中性に保つために大
量の水を一過式に散水する必要があった。Further, the biological deodorization tower controls the pH in order to maintain the activity of the microorganisms that decompose the offensive odor. However, since the pH is controlled by using chemicals, the cost of chemicals is increased. Needed to sprinkle a large amount of water once to keep the pH neutral.
【０００５】[0005]
【発明が解決しようとする課題】本発明は上記した従来
の問題点を解決し、水や薬品の使用量を節減しつつ装置
全体としての脱臭性能を高めることができる生物脱臭方
法を提供するために完成されたものである。SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems and provides a biological deodorizing method capable of improving the deodorizing performance of the entire apparatus while reducing the amount of water and chemicals used. It was completed.
【０００６】[0006]
【課題を解決するための手段】上記の課題を解決するた
めになされた本発明は、直列に接続された複数の生物脱
臭塔の散水のpH域を後段ほど高くなるように設定してお
き、散水がpH域内にあるときには散水を同一の生物脱臭
塔内で循環使用し、散水がpH域を下回るときには後段の
生物脱臭塔の散水排水を前段の生物脱臭塔の散水として
使用することを特徴とするものである。 SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems.
Set the pH range of the sprinkler tower to be higher in the later stage.
Watering is within the pH range, watering is the same biological deodorization
It is circulated in the tower, and when watering falls below the pH range,
Watering drainage of biological deodorization tower as watering of biological deodorization tower in the first stage
It is characterized in that it is used.
【０００７】以下に本発明を、図１のフローによって更
に詳細に説明する。図１では生物脱臭塔を２段とした
が、これに限定されるものではない。図１において、１
は水洗塔、２、３は直列に接続された生物脱臭塔であ
る。水洗塔１の内部には通気上の圧力損失が小さく、気
液が物理的に接触し易い構造の担体を粗に充填した充填
層４が設けられており、生物脱臭塔２、３の内部には通
気上の圧力損失が小さく、気液が物理的に接触し易い担
体に、悪臭物質を分解する微生物を高密度に固定化した
充填層５、６が設けられている。Hereinafter, the present invention will be described in more detail with reference to the flow chart of FIG. Although the biological deodorization tower has two stages in FIG. 1, it is not limited to this. In FIG. 1, 1
Is a washing tower, and 2 and 3 are biological deodorization towers connected in series. Inside the washing tower 1, there is provided a packed layer 4 roughly filled with a carrier having a structure in which pressure loss on ventilation is small and gas-liquid is easily brought into physical contact. The packing layers 5 and 6 in which microorganisms that decompose malodorous substances are immobilized at a high density are provided on a carrier which has a small pressure loss on aeration and is easily contacted with gas and liquid.
【０００８】７は水洗塔１に臭気ガスを送るブロアであ
る。８は水洗塔１の散水ポンプであり、水洗塔１の底部
の散水排水又は水洗塔１の底部に設けられた水槽９内の
散水排水を汲み上げてノズル10から散水する。同様に、
生物脱臭塔２、３の底部にも水槽11、12が設けられてお
り、散水ポンプ13、14がその底部から散水排水を汲み上
げて、又は水槽11、12から散水排水を汲み上げてノズル
15、16から散水するようになっている。この実施例で
は、水洗塔１の底部に設けられた水槽９には生物脱臭塔
２の散水排水が導入され、生物脱臭塔２の底部に設けら
れた水槽11にはその後段の生物脱臭塔３の散水排水が導
入され、生物脱臭塔３の底部に設けられた水槽12には新
水が導入されている。Reference numeral 7 denotes a blower for sending odorous gas to the washing tower 1. Numeral 8 denotes a watering pump of the washing tower 1, which pumps water from the nozzle 10 by drawing water from the bottom of the washing tower 1 or water in the water tank 9 provided at the bottom of the washing tower 1. Similarly,
Water tanks 11 and 12 are also provided at the bottoms of the biological deodorization towers 2 and 3, and watering pumps 13 and 14 pump water from the bottoms or water from the water tanks 11 and 12, respectively.
Watering is started from 15,16. In this embodiment, sprinkling drainage of the biological deodorization tower 2 is introduced into a water tank 9 provided at the bottom of the washing tower 1, and a water tank 11 provided at the bottom of the biological deodorization tower 2 is provided with a biological deodorization tower 3 at a subsequent stage. And fresh water is introduced into a water tank 12 provided at the bottom of the biological deodorization tower 3.
【０００９】なお、新水としては下水処理場の処理水を
利用することが好ましい。これは処理水にpH緩衝効果が
あること、上水よりも低コストであること、微生物の成
長に必要なミネラルを多く含むので生物脱臭効果が向上
すること等の理由による。It is preferable to use treated water from a sewage treatment plant as fresh water. This is because the treated water has a pH buffering effect, is lower in cost than tap water, and contains a large amount of minerals necessary for the growth of microorganisms, thereby improving the biological deodorizing effect.
【００１０】前段の生物脱臭塔２はpH域が２〜３に設定
されており、後段の生物脱臭塔３はpH域が６〜８に設定
されている。このように設定pH域を異ならせれば、充填
層５、６の悪臭物質を分解する微生物に住み分けを行わ
せることができるので、その臭気ガスに応じ悪臭物質を
分解する微生物を適当に繁殖させることにより、装置全
体の処理性能を向上させることができる。また一般に後
段ほど臭気ガス中の硫化水素等の硫黄系臭気成分が少な
くなり、散水排水中の硫酸イオンが減少するためにpHは
高い値となるが、本発明では後段側の生物脱臭塔３の散
水排水を前段の生物脱臭塔２に散水できるので、前段の
生物脱臭塔２のpHが２を下回りそうになったときに、そ
の生物脱臭塔３の散水排水を水槽11から生物脱臭塔２に
散水することによりpHを高めて、生物脱臭塔２のpHを設
定域に維持することができる。The biological deodorization tower 2 in the first stage has a pH range of 2 to 3, and the biological deodorization tower 3 in the latter stage has a pH range of 6 to 8. If the set pH range is changed in this way, microorganisms that decompose malodorous substances in the packed layers 5 and 6 can be segregated, so that the microorganisms that decompose malodorous substances can be appropriately propagated according to the odor gas. Thereby, the processing performance of the entire apparatus can be improved. In general, the later the stage, the lower the sulfur-based odor component such as hydrogen sulfide in the odor gas, and the lower the pH value because of the decrease in the amount of sulfate ions in the sprinkling wastewater. Since the sprinkling drainage can be sprinkled into the biological deodorization tower 2 in the former stage, when the pH of the biological deodorization tower 2 in the former stage is about to fall below 2, the sprinkling drainage of the biological deodorization tower 3 is transferred from the water tank 11 to the biological deodorization tower 2. By spraying water, the pH can be increased, and the pH of the biological deodorization tower 2 can be maintained in a set range.
【００１１】本発明では、散水が設定pH域内にあるとき
には散水を同一の生物脱臭塔２、３内で循環使用し、散
水が設定pH域を下回るときにはpHがより高い後段の生物
脱臭塔３の散水排水を前段の生物脱臭塔２の散水として
使用する。後段の生物脱臭塔３についてはそれよりも後
段はないため、新水を導入する。このためにはバルブ1
7、18、19をpH計の出力に応じて開閉させればよい。こ
れにより、装置全体で使用される水の量を大幅に減少さ
せることができ、従って排水量も減少させることができ
る。 In the present invention, when watering is within a set pH range,
Water is circulated in the same biological deodorization towers 2 and 3,
When water falls below the set pH range, later organisms with higher pH
Sprinkling drainage of the deodorization tower 3 as watering of the biological deodorization tower 2 in the preceding stage
use. For the biological deodorization tower 3 at the later stage,
There is no step, so fresh water is introduced. For this, valve 1
What is necessary is just to open and close 7,18,19 according to the output of a pH meter. This
This significantly reduces the amount of water used in the entire system.
And thus the amount of drainage can be reduced
You.
【００１２】さらに本発明では、後段の生物脱臭塔３の
充填層６から流出した微生物を前段の生物脱臭塔２で回
収することができるため、微生物の馴致も容易である。
馴致とは担体に悪臭物質を分解する微生物を種菌・付着
させることであり、通常は各 生物脱臭塔毎に行う必要が
ある。しかし本発明では、後段の生物脱臭塔３の充填層
６への馴致を行うことによりその前段の生物脱臭塔２の
充填層５への馴致も行われることとなる。 Furthermore, in the present invention, the biological deodorization tower
The microorganisms flowing out of the packed bed 6 are collected in the biological deodorization tower 2 at the previous stage.
Because it can be harvested, it is easy to adapt the microorganisms.
Adaptation is the inoculation of microorganisms that decompose odorous substances on the carrier
It is usually necessary to do this for each biological deodorization tower.
is there. However, in the present invention, the packed bed of the subsequent biological deodorization tower 3 is
Of the biological deodorization tower 2 at the previous stage
The adaptation to the filling layer 5 is also performed.
【００１３】本発明によれば上記の効果の他に、pH制御
用の薬品を一切使用せずに生物脱臭塔２、３内のpH制御
を行える効果がある。このように種々のpHを設定するこ
とによりそのpHに応じた悪臭物質を分解する微生物を生
息させることができ、種々の悪臭物質を効率的に脱臭処
理することが可能となる。 According to the present invention, in addition to the above effects, there is an effect that the pH in the biological deodorization towers 2 and 3 can be controlled without using any pH control chemicals. By setting various pH values in this way, microorganisms that decompose malodorous substances according to the pH can be inhabited, and various malodorous substances can be efficiently deodorized.
【００１４】[0014]
【実施例】以下に本発明の実施例を示す。メチルメルカ
プタン0.2ppm、硫化水素８ppm 、アンモニア10ppm 、二
硫化メチル３ppm 、硫化メチル２ppm を含む同一の臭気
ガスを、従来の１塔式の生物脱臭装置と図１に示した本
発明の生物脱臭装置とによって処理した。その際のＳＶ
（空塔速度）、風量、担体量は表１の通りであり、散水
量は表２の通りであった。その結果を表３に示す。表３
は各悪臭物質濃度をppm の単位で示し、括弧内は原臭に
対する除去率を％の単位で示したものである。表３に示
されるように、本発明によれば新水の使用量を削減しつ
つ高いSV条件下で高い臭気除去率を得ることができ、SV
が高いので装置の小型化と、充填する担体量の削減を図
ることができる。なお、本実施例では２段の生物脱臭塔
を設けたが、悪臭物質の種類や量及び目標値により、２
段以上の生物脱臭塔を使用してもよい。Examples of the present invention will be described below. The same odor gas containing 0.2 ppm of methyl mercaptan, 8 ppm of hydrogen sulfide, 10 ppm of ammonia, 3 ppm of methyl disulfide, and 2 ppm of methyl sulfide was supplied to a conventional one-tower type biological deodorizer and the biological deodorizer of the present invention shown in FIG. Processed by. SV at that time
(Superficial velocity), air volume and carrier amount were as shown in Table 1, and water spray amount was as shown in Table 2. Table 3 shows the results. Table 3
Indicates the concentration of each offensive odor substances in units of ppm, and the value in parentheses indicates the removal rate of the original odor in units of%. As shown in Table 3, according to the present invention, a high odor removal rate can be obtained under high SV conditions while reducing the amount of fresh water used.
Therefore, the size of the apparatus can be reduced and the amount of the carrier to be filled can be reduced. In this example, a two-stage biological deodorization tower was provided.
More than one stage biological deodorization tower may be used.
【００１５】[0015]
【表１】 [Table 1]
【００１６】[0016]
【表２】 [Table 2]
【００１７】[0017]
【表３】 [Table 3]
【００１８】[0018]
【発明の効果】以上に説明したように、本発明の生物脱
臭方法によれば、水の使用量を節減しつつ装置全体とし
ての脱臭性能を高めることができ、更に薬品を使用せず
に生物脱臭塔のpHを制御できる効果がある。よって本発
明は従来の問題点を解決した生物脱臭方法として、産業
の発展に寄与するところは極めて大きいものである。As described above, according to the present invention, according to the biological deodorization method of the present invention, while saving the amount of water can enhance the deodorizing performance of the entire apparatus, the organism without further use chemicals This has the effect of controlling the pH of the deodorization tower. Therefore, the present invention, as a biological deodorizing method that solves the conventional problems, greatly contributes to industrial development.
【図１】本発明の実施例を示すフローシートである。FIG. 1 is a flow sheet showing an embodiment of the present invention.
２ 前段の生物脱臭塔 ３ 後段の生物脱臭塔 2 Pre-stage biological deodorization tower 3 Post-stage biological deodorization tower
Claims (1)
水のpH域を後段ほど高くなるように設定しておき、散水
がpH域内にあるときには散水を同一の生物脱臭塔内で循
環使用し、散水がpH域を下回るときには後段の生物脱臭
塔の散水排水を前段の生物脱臭塔の散水として使用する
ことを特徴とする生物脱臭方法。 1. Dispersion of a plurality of biological deodorization towers connected in series
Set the water pH range to be higher in the later stage
When water is within the pH range, circulate water in the same biological deodorization tower.
When the water is below the pH range using a ring, biological deodorization at the later stage
Use water from the tower as water for the biological deodorization tower
A biological deodorization method characterized by the above-mentioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5015476A JP2589040B2 (en) | 1993-02-02 | 1993-02-02 | Biological deodorization method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5015476A JP2589040B2 (en) | 1993-02-02 | 1993-02-02 | Biological deodorization method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06226033A JPH06226033A (en) | 1994-08-16 |
| JP2589040B2 true JP2589040B2 (en) | 1997-03-12 |
Family
ID=11889858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5015476A Expired - Fee Related JP2589040B2 (en) | 1993-02-02 | 1993-02-02 | Biological deodorization method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2589040B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010035671A (en) * | 1999-10-01 | 2001-05-07 | 김희용 | Biofilter system packed by porous media for removal of malodor gas |
| CN107737517A (en) * | 2017-09-27 | 2018-02-27 | 河北旭杰环境工程有限公司 | Method of eliminating malodours from gases and device based on microorganism |
| CN108744950A (en) * | 2018-07-12 | 2018-11-06 | 江苏俊镕环保设备有限公司 | A kind of dust-laden organic waste gas treatment device based on biochemical sensitization packed bed |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04371213A (en) * | 1991-06-19 | 1992-12-24 | Ebara Infilco Co Ltd | Deodorizing method for malodorous gas containing hydrogen sulfide of high concentration |
| JPH05168849A (en) * | 1991-12-25 | 1993-07-02 | Kobe Steel Ltd | Deodorizer |
-
1993
- 1993-02-02 JP JP5015476A patent/JP2589040B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06226033A (en) | 1994-08-16 |
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