JPH03296416A - Deodorization of foul-smelling gas - Google Patents
Deodorization of foul-smelling gasInfo
- Publication number
- JPH03296416A JPH03296416A JP2099258A JP9925890A JPH03296416A JP H03296416 A JPH03296416 A JP H03296416A JP 2099258 A JP2099258 A JP 2099258A JP 9925890 A JP9925890 A JP 9925890A JP H03296416 A JPH03296416 A JP H03296416A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- activated carbon
- deodorizing
- malodorous gas
- malodorous
- 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
- 238000004332 deodorization Methods 0.000 title abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 76
- 230000001877 deodorizing effect Effects 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims description 24
- 239000007864 aqueous solution Substances 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 239000003054 catalyst Substances 0.000 claims description 9
- 238000007254 oxidation reaction Methods 0.000 claims description 8
- 230000003647 oxidation Effects 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 6
- 238000006864 oxidative decomposition reaction Methods 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 abstract description 4
- 230000007935 neutral effect Effects 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 abstract description 3
- 229910019093 NaOCl Inorganic materials 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 42
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 18
- 238000012545 processing Methods 0.000 description 14
- 239000007788 liquid Substances 0.000 description 13
- 229910001868 water Inorganic materials 0.000 description 13
- 239000000126 substance Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 7
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 235000011121 sodium hydroxide Nutrition 0.000 description 6
- 238000007796 conventional method Methods 0.000 description 5
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- 238000005273 aeration Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 235000019645 odor Nutrition 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000008399 tap water Substances 0.000 description 4
- 235000020679 tap water Nutrition 0.000 description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 150000001299 aldehydes Chemical class 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 229910052979 sodium sulfide Inorganic materials 0.000 description 2
- 229910052815 sulfur oxide Inorganic materials 0.000 description 2
- QIVUCLWGARAQIO-OLIXTKCUSA-N (3s)-n-[(3s,5s,6r)-6-methyl-2-oxo-1-(2,2,2-trifluoroethyl)-5-(2,3,6-trifluorophenyl)piperidin-3-yl]-2-oxospiro[1h-pyrrolo[2,3-b]pyridine-3,6'-5,7-dihydrocyclopenta[b]pyridine]-3'-carboxamide Chemical compound C1([C@H]2[C@H](N(C(=O)[C@@H](NC(=O)C=3C=C4C[C@]5(CC4=NC=3)C3=CC=CN=C3NC5=O)C2)CC(F)(F)F)C)=C(F)C=CC(F)=C1F QIVUCLWGARAQIO-OLIXTKCUSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 1
- 239000007832 Na2SO4 Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000010800 human waste Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002898 organic sulfur compounds Chemical class 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 239000012476 oxidizable substance Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000009279 wet oxidation reaction Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、悪臭ガスの脱臭に係り、特に下水処理場、し
尿処理場、各種工場等から発生する悪臭ガスを、化学的
に脱臭する脱臭方法に関するものである。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to the deodorization of malodorous gases, and in particular to chemical deodorization of malodorous gases generated from sewage treatment plants, human waste treatment plants, various factories, etc. It is about the method.
従来より、化学的に悪臭ガスを脱臭する方法として、次
亜塩素酸ソーダ（ＮａＯＣｌ）と苛性ソーダ（ＮａＯＨ
）を含む吸収液を用いる薬液洗浄法が知られている。Ｎ
ａ０Ｃ１を使用した脱臭方法の欠点は、その処理ガスに
Ｎａ０Ｃ１に起因する塩素臭（ＣＩ□）が新たに加わる
ことによって、その処理成績が低下することである。処
理ガス中の塩素臭を除去するためには、別に活性炭吸着
塔やチオ硫酸ソーダを含む水溶液で洗浄する必要がある
。Traditionally, sodium hypochlorite (NaOCl) and caustic soda (NaOH) have been used to chemically deodorize foul-smelling gases.
) is known. N
A drawback of the deodorizing method using a0C1 is that the treatment performance deteriorates due to the addition of chlorine odor (CI□) caused by Na0C1 to the treated gas. In order to remove the chlorine odor from the treated gas, it is necessary to separately clean it with an activated carbon adsorption tower or an aqueous solution containing sodium thiosulfate.
また、粉末活性炭をスラリー状にして脱臭する方法（特
開昭６４−４８１３号、特開平１−２５４２２９号各公
報）も知られている。Also known is a method of deodorizing powdered activated carbon in the form of a slurry (Japanese Patent Application Laid-open Nos. 4813-1983 and 254-229-1999).
これらの方法は、吸収液中の溶存酸素（Ｄｏ）を利用し
て、悪臭物質を酸化させるために、次に示すような問題
点がある。Since these methods utilize dissolved oxygen (Do) in the absorption liquid to oxidize malodorous substances, they have the following problems.
■ 酸化反応は、溶存酸素の供給が律速となり、非常に
緩慢であり、そのために過大な設備が必要となる。■ The oxidation reaction is rate-determined by the supply of dissolved oxygen and is extremely slow, which requires excessive equipment.
■ 原ガスの濃度変動に弱い。■ Vulnerable to fluctuations in raw gas concentration.
前記したように、従来技術においては、処理ガスに塩素
臭が混入するとか、または活性炭スラリー液を用いても
、悪臭物質の酸化分解反応が遅いために、過大な設備に
なる等の問題があった。As mentioned above, in the conventional technology, there are problems such as chlorine odor being mixed into the processing gas, and even if an activated carbon slurry liquid is used, the oxidative decomposition reaction of malodorous substances is slow, resulting in oversized equipment. Ta.
そこで、本発明は、上記の問題点を解決し、処理成績の
向上化と処理設備費を低減できる悪臭ガスの脱臭方法を
提供することを目的とする。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a method for deodorizing malodorous gas that can solve the above-mentioned problems, improve treatment results, and reduce treatment equipment costs.
上記目的を達成するために、本発明では、悪臭ガスを、
活性炭充填層中で、アルカリ剤でｐＨ６以上に調整され
たＨ３Ｏ２水溶液と接触させる悪臭ガスの脱臭方法とし
たものであり、また、本発明では、悪臭ガスを、粉末活
性炭を懸濁させ、かつアルカリ剤でｐＨ６以上に調整さ
れたＨ２Ｏ２水溶液と接触させる悪臭ガスの脱臭方法と
したものであり、更に、本発明では、悪臭ガスと粉末活
性炭を懸濁させたＨ２Ｏ２水溶液との接触を充填材を充
填した充填層中で行う悪臭ガスの脱臭方法としたもので
ある。In order to achieve the above object, the present invention removes malodorous gas from
This is a method for deodorizing malodorous gas by contacting it with an aqueous H3O2 solution whose pH has been adjusted to 6 or more with an alkaline agent in an activated carbon packed bed. This is a method for deodorizing malodorous gas by contacting it with an aqueous H2O2 solution whose pH has been adjusted to 6 or higher with a filler. This is a method for deodorizing malodorous gas in a packed bed.
また、本発明では、前処理として、活性炭を酸化触媒と
した悪臭ガスの湿式酸化分解による脱臭処理を行い、次
いで、上記の脱臭方法を行う悪臭ガスの脱臭方法とした
ものである。Further, in the present invention, a method for deodorizing malodorous gas is performed in which pretreatment is performed by wet oxidative decomposition of malodorous gas using activated carbon as an oxidation catalyst, and then the above-described deodorizing method is performed.
すなわち、本発明では、悪臭ガス中の悪臭物質を上記の
Ｈ２Ｏ２水溶液に吸収させ、活性炭を酸化触媒として、
酸化剤であるＨ２Ｏ２によって吸収された悪臭物質を酸
化分解し除去するものである。That is, in the present invention, malodorous substances in malodorous gas are absorbed into the above H2O2 aqueous solution, and activated carbon is used as an oxidation catalyst.
The oxidizing agent, H2O2, oxidizes and decomposes the absorbed malodorous substances and removes them.
以下に、本発明の詳細な説明する。The present invention will be explained in detail below.
本発明で処理できる悪臭ガスとしては、硫化水素、メル
カプタン等の有機硫黄化合物、フェノール、アルデヒド
類、硫黄酸化物（ＳＯｘ）等の少なくとも一種類以上を
含んだガスである。The malodorous gas that can be treated in the present invention is a gas containing at least one of hydrogen sulfide, organic sulfur compounds such as mercaptans, phenol, aldehydes, sulfur oxides (SOx), and the like.
悪臭成分の酸化分解触媒として、活性炭を使用する本発
明では、初期の段階ではアルカリ剤を添加しなくても、
悪臭成分は除去できるが、継続して処理を行うと、悪臭
成分の酸化生成物である酸、硫酸のた袷に、Ｈ３Ｏ２水
溶液のｐＨが低下し処理性能が低下するので、アルカリ
を添加して、Ｈ２Ｏ，水溶液をｐ）１６以上、好ましく
はｐ）１８〜１１に維持する必要があり、アルカリ剤と
しては、苛性ソーダでも炭酸ソーダでもどんなアルカリ
剤でも使用できる。In the present invention, which uses activated carbon as a catalyst for oxidative decomposition of malodorous components, the process can be carried out without adding an alkaline agent in the initial stage.
Although the malodorous components can be removed, if the treatment is continued, the pH of the H3O2 aqueous solution will decrease and the treatment performance will decrease due to the presence of acid and sulfuric acid, which are the oxidation products of the malodorous components, so an alkali is added. , H2O, it is necessary to maintain the aqueous solution at p) 16 or higher, preferably p) 18 to 11, and any alkaline agent such as caustic soda or soda carbonate can be used as the alkaline agent.
使用する活性炭は、再生炭でも新炭でもいずれの銘柄の
活性炭でも使用できる。もちろん、懸濁状態で使用する
場合は、粉末活性炭（粒径２００メツシニ）を、また充
填材として使用する場合は、粒状や繊維状活性炭が使用
できる。The activated carbon used can be either recycled carbon or new carbon, or any brand of activated carbon. Of course, when used in a suspended state, powdered activated carbon (particle size 200 mesh) can be used, and when used as a filler, granular or fibrous activated carbon can be used.
粉末活性炭の添加量は、懸濁液に対して０．０１〜ｌ
ｗ／ｖ％が良い。The amount of powdered activated carbon added is 0.01 to 1 to the suspension.
Good w/v%.
Ｈ２Ｏ，添加量は、悪臭ガスに含まれる硫化水素等の被
酸化性物質濃度によって決まるが、通常、Ｈ３Ｏ２水溶
液中の残留）１２０．１１度を、５０〜１１０００ｐｐ
に維持できるようにＯＲＰ （酸化還元電位）により制
御する。The amount of H2O added is determined by the concentration of oxidizable substances such as hydrogen sulfide contained in the malodorous gas, but it is usually 50 to 11,000 ppp to
It is controlled by ORP (oxidation-reduction potential) so that it can be maintained at
次に、本発明について、その概略断面図を示した第１図
〜第３図で説肋する。Next, the present invention will be explained with reference to FIGS. 1 to 3 showing schematic cross-sectional views thereof.
第１図は、粒状活性炭の充填層５を形成させた充填塔２
で、悪臭ガスｌを散水部３よりアルカリ剤で調整された
Ｈ２Ｏ２水溶液と気液接触させて、脱臭処理するように
構成されている。FIG. 1 shows a packed tower 2 in which a packed bed 5 of granular activated carbon is formed.
The malodorous gas 1 is brought into gas-liquid contact with an aqueous H2O2 solution prepared with an alkaline agent from the water sprinkling section 3 for deodorizing treatment.
第２図は、曝気槽１２に注入ライン１はり入れた粉末活
性炭を懸濁させ、かつアルカリ剤で調整されたＨ２Ｏ２
水溶液１３ （懸濁液）に、悪臭ガス１を散気管１４か
ら吹き込み、脱臭処理するように構成されている。Figure 2 shows H2O2 in which powdered activated carbon is suspended in the injection line 1 in the aeration tank 12 and adjusted with an alkaline agent.
The aqueous solution 13 (suspension) is configured to be deodorized by blowing malodorous gas 1 through a diffuser pipe 14.
第３図は、充填塔２に市販の充填材、例えばバイレック
スやテラレットまたは内部に連通空間を有するスポンジ
を充填した充填層１５で、悪臭ガス１と粉末活性炭を懸
濁させ、かつアルカリ剤で調整されたＨ２Ｏ２水溶液１
３ （ｇ濁液）とを気液接触させて、脱臭を行うように
構成されている。FIG. 3 shows a packed bed 15 in which a packed tower 2 is filled with a commercially available filler such as Virex, Terraret, or a sponge having a communicating space inside, in which malodorous gas 1 and powdered activated carbon are suspended, and an alkaline agent is used. Adjusted H2O2 aqueous solution 1
3 (g suspension) is brought into gas-liquid contact to perform deodorization.
第４図は、前段で悪臭ガスの悪臭成分を、活性炭を湿式
酸化触媒として、空気で大部分除去した後、その処理ガ
ス４′に残留する悪臭成分を第１図、第２図、第３図の
いずれかの方法、つまり活性炭存在下でＨ２Ｏ２水溶液
による酸化分解を行うものである。FIG. 4 shows that after most of the malodorous components of the malodorous gas are removed with air using activated carbon as a wet oxidation catalyst in the first stage, the malodorous components remaining in the treated gas 4' are removed by the methods shown in FIGS. The method shown in the figure is one in which oxidative decomposition is carried out using an aqueous H2O2 solution in the presence of activated carbon.
第１図〜第４図において、６は受木部で、８゜９．１０
．１１は反応で消費した補給水、アルカリ剤、ＨＪ２水
溶液、粉末活性炭をそれぞれ補給する注入ラインである
。In Figures 1 to 4, 6 is the tree receiving part, 8°9.10
．． Reference numeral 11 denotes an injection line for replenishing makeup water, alkali agent, HJ2 aqueous solution, and powdered activated carbon consumed in the reaction.
本発明による悪臭物質の分解機構を説明する。 The decomposition mechanism of malodorous substances according to the present invention will be explained.
悪臭ガスの悪臭成分、例えば硫化水素（Ｈ２Ｓ）は、（
１）式のようにアルカリ性水溶液に吸収される。Malodorous components of malodorous gas, such as hydrogen sulfide (H2S), are (
1) Absorbed in alkaline aqueous solution as shown in formula.
ＦＩ２Ｓ ＋２ＮａＯＨ−Ｎａ２Ｓ ＋ ２ＨａＯ（１
）吸収された硫化水素は、活性炭を触媒に酸化剤である
日２０２によって、（２）式のように酸化分解されて、
酸化生成物として安定な硫酸塩を生成する。FI2S +2NaOH-Na2S +2HaO(1
) The absorbed hydrogen sulfide is oxidized and decomposed by the oxidizing agent 202 using activated carbon as a catalyst, as shown in equation (2),
Produces stable sulfate as an oxidation product.
Ｎａ２Ｓ ＋ ４ＬＬ
Ｎａ２ＳＯ４＋ ４ＬＯ（２）
（１）、（２）式から判るように、酸化分解反応はアル
カリ性で定量的に進み、液性では（３）式のように固体
の硫黄が析出する。Na2S + 4LL Na2SO4+ 4LO(2) As seen from equations (1) and (2), the oxidative decomposition reaction proceeds quantitatively in alkaline conditions, and solid sulfur precipitates in liquid conditions as shown in equation (3).
Ｈｉｓ ＋）＋２０２
Ｓ” ＋２Ｈ２０（３）
メルカプタン（ＲＳ Ｈと示す）も硫化水素と同様に、
アルカリ性で吸収され、活性炭の触媒の存在下でＨ２Ｏ
２によって、（４）、（５）式に示すように酸化分解除
去される。His+)+202 S”+2H20(3) Mercaptan (denoted as RS H) is also similar to hydrogen sulfide.
Absorbed in alkaline and H2O in the presence of activated carbon catalyst
2, it is oxidized and decomposed and removed as shown in equations (4) and (5).
Ｒ８Ｈ＋ ＮａＯＨＲ３Ｎａ ＋ ＨＪ
（４）２Ｒ５Ｎａ＋６）１．０． − ２ＲＳＯ，Ｎａ
＋６Ｈ２０（５）このようにして、硫化水素を含む悪臭
成分はアルカリ性Ｈ２Ｏ２水溶液に効率良く吸収され、
吸収された悪臭成分は酸化触媒としての活性炭の存在下
で、Ｒ２０，によって容易に酸化分解除去される。R8H+ NaOHR3Na + HJ
(4)2R5Na+6)1.0. -2RSO,Na
+6H20 (5) In this way, malodorous components including hydrogen sulfide are efficiently absorbed into the alkaline H2O2 aqueous solution,
The absorbed malodorous components are easily oxidized and decomposed by R20 in the presence of activated carbon as an oxidation catalyst.
また、アルデヒド類も中性〜アルカリ性Ｈ７Ｏ２水溶液
に吸収され、同様に活性炭存在下で、次のように分解除
去される。In addition, aldehydes are also absorbed by the neutral to alkaline H7O2 aqueous solution and similarly decomposed and removed in the presence of activated carbon as follows.
ＲＣ）１０ ＋Ｈ２Ｏ２ＲＣＯＯＨ＋ Ｈ２Ｏ−ＣＯ２
＋ ）＋２０ （６）Ｓ［１２を含む悪臭ガス
も、活性炭を酸化触媒とする中性Ｒ２０，水溶液によっ
て、次式のように定量的にＨ，ＳＯ４まで酸化される。RC)10 +H2O2RCOOH+ H2O-CO2
+ ) +20 (6) A foul-smelling gas containing S[12 is also quantitatively oxidized to H and SO4 by a neutral R20 aqueous solution using activated carbon as an oxidation catalyst, as shown in the following equation.
ＳＯ２＋Ｈ２Ｏ２−Ｈ２ＳＯ４−（７）〔実施−〕
以下、本発明を実施例に基づいて詳述するが、本発明は
これに限定されるものではない。SO2+H2O2-H2SO4-(7) [Implementation-] The present invention will be described in detail below based on Examples, but the present invention is not limited thereto.
実施例−１
悪臭ガスを第１図の装置で脱臭実験した。処理条件とそ
の結果を下記及び第１表に示す。Example 1 A deodorization experiment was carried out on malodorous gas using the apparatus shown in FIG. The processing conditions and results are shown below and in Table 1.
処理条件
空塔速度 ０．１＋ＩＩ／ ｓｅｃ散
水量く単位処理カス当り＞１１／ｍ’ガス温度
１０〜１５℃充填材 粒状活性炭（粒径５ｍｍ
）
充填層断面積 ０．２ ω２〃 高さ
０．３ｍ
循環液のＦ’Ｈ１０
本発明：残留Ｈ，０□ ５０ ｐｐｍ従来法
： 〃 ｏ 〃
実験は、Ｈ３Ｏ２を用いない従来法とＬＬを用いた本発
明の方法の両方で行った。従来法は、粒状活性炭（荏原
インフィルコ（株）製エバダイヤＡＧ−２００、粒径５
ｍｍ）を充填した充填層で、悪臭ダスと苛性ソーダで
ｐ）１１０に調整した水道水（循環液）とを、気液接触
させた。本発明の方法は、処理ガス濃度が一定になった
時点で、循環液ニＨ２０，ヲ注入し、残留ＬＯｚｌｌＪ
ｔヲ５０ ｐｐｍ 。Processing conditions Superficial velocity 0.1+II/sec Water sprinkling amount >11/m' per unit treatment waste Gas temperature
10~15℃ Filler Granular activated carbon (particle size 5mm
) Filled bed cross-sectional area 0.2 ω2〃 Height
0.3 m F'H10 of circulating fluid Present invention: Residual H, 0 □ 50 ppm Conventional method: 〃 o 〃 Experiments were conducted using both the conventional method without H3O2 and the method of the present invention using LL. The conventional method uses granular activated carbon (Ebara Infilco Co., Ltd. Evadia AG-200, particle size 5
The foul-smelling dust was brought into gas-liquid contact with tap water (circulating fluid) adjusted to p) 110 with caustic soda in a packed bed filled with p). In the method of the present invention, when the processing gas concentration becomes constant, the circulating liquid is injected with H20, and the residual LOzllJ is
50 ppm.
ρ）１１０に維持しつつ脱臭処理した。Deodorization treatment was performed while maintaining the temperature at ρ) 110.
実施例−２
悪臭ガスを第２図の装置で実験した。処理条件を下記に
、その結果を第１表に示す。Example 2 A malodorous gas was tested using the apparatus shown in Figure 2. The processing conditions are shown below, and the results are shown in Table 1.
処理条件
液 深 ｌｌ１１曝気強
度 １０ ｍ’／’ｍ’、ｈ液 温
１０〜１５ ℃活性炭添加量（粉
末）０．１賀／Ｖ％
ｐＨ１０
本発明：残留ＨＪａ ５０ ｐｐｍ従来法：
〃 ０ 〃
従来法は、粉末活性炭（荏原インフィルコ■エバダイヤ
５０ ｔ、ｐ、含水率５０％）を水道水に懸濁させ、苛
性ソーダでｐＨ１０に維持しつつ悪臭ガスを吹き込んだ
。本発明の方法は、処理ガス濃度が一定になった時点で
、活性炭懸濁液にＨ３口、を注入し、残留Ｈ３０，を５
０ｐｐｍ 、ｐＨ１０に維持しつつ脱臭処理した。Processing conditions Liquid depth 111 Aeration intensity 10 m'/'m', h liquid temperature
10-15°C Activated carbon addition amount (powder) 0.1 Ka/V% pH 10 Invention: Residual HJa 50 ppm Conventional method:
〃 0 〃 In the conventional method, powdered activated carbon (Ebara Infilco EVA DIA 50 t, p, water content 50%) was suspended in tap water, and a malodorous gas was blown into the water while maintaining the pH at 10 with caustic soda. In the method of the present invention, when the processing gas concentration becomes constant, H3 is injected into the activated carbon suspension to remove residual H30,
Deodorization was performed while maintaining the pH at 0 ppm and 10.
実施例−３
悪臭ガスを第３図の装置で実験した。処理条件を下記に
、その結果を第１表に示す。Example 3 A malodorous gas was tested using the apparatus shown in Figure 3. The processing conditions are shown below, and the results are shown in Table 1.
処理条件
空塔速度 １．０ ｍ／ ｓｅｃ散水量
〈単位処理カス当り＞３１／ｒｎ’ガス温度
１０〜１５℃充填材 バイレックス 外径３
０ｆｆｌｌＩ＋充填層断面積 ０．２ｒｎ
２〃 高さ １・５１″本発明：粉末
、活性炭添加量 ０．１ｗ／ｖ％。Processing conditions Superficial velocity 1.0 m/sec Water spray amount <per unit treated waste>31/rn' Gas temperature
10~15℃ filler Vilex outer diameter 3
0ffllI+Filled bed cross-sectional area 0.2rn
2〃 Height 1.51″ Present invention: Powder, activated carbon addition amount 0.1 w/v%.
残留ＨａＯ２５０ｐｐｍ、ｐＨ１０
従来法−１： ｐＨ１０
” −２：ｐＨ１０，Ｎａ０Ｃ１３００ｐｐｍ実施例
−４
悪臭ガスを第４図の（Ｃ）と（Ｆ）を組み合せた装置で
実験した。Residual HaO 250 ppm, pH 10 Conventional method-1: pH 10''-2: pH 10, Na0C 1300 ppm Example-4 A malodorous gas experiment was conducted using an apparatus combining (C) and (F) in FIG.
処理条件
後段の処理：実施例−３の本発明
比較例ニー段処理の実施例−３の本発明その処理結果を
第１表に、薬品代の比較を第２表に示す。Processing conditions Post-processing: Comparative example of the present invention in Example-3 Knee-stage processing according to the present invention in Example-3 The processing results are shown in Table 1, and a comparison of chemical costs is shown in Table 2.
粉末活性炭く前君己エバダイヤ５０ Ｌｐ＞ ０−１ｗ
／Ｖ％を水道水に懸濁させて、苛性ソーダでｐＨ１０に
維持した循環液と悪臭ガスを市販の充填材、バイレック
スを充填した充填層中で気液接触させて、脱臭処理した
。その処理ガスを後段に設けた充填層（充填材二）＼イ
レツクス）で循環液と気液接触させて再度、仕上げの脱
臭を行った。Powder activated carbon Kuzen Kimiki Eva Diamond 50 Lp> 0-1w
/V% was suspended in tap water and the circulating fluid maintained at pH 10 with caustic soda was brought into gas-liquid contact with malodorous gas in a packed bed filled with a commercially available filler, Virex, for deodorization. The treated gas was brought into gas-liquid contact with the circulating liquid in a packed bed (filling material 2) provided at the latter stage (filling material 2) to perform final deodorization again.
後段の循環液は粉末活性炭０．１ ｗ／ｖ％を含む水道
水をｐＨ１０、残留Ｈ２０，濃度５０ｐｐｍに調整した
ものを用いた。The circulating fluid used in the latter stage was tap water containing 0.1 w/v% powdered activated carbon, adjusted to pH 10, residual H20, and concentration 50 ppm.
その結果、本発明も比較例も脱臭性能は非常に良好であ
った。特に本発明ではランニングコストに大きく影響す
る薬品代が比較例の２３％であり、約８０％も節約でき
た。As a result, both the present invention and the comparative example had very good deodorizing performance. In particular, in the present invention, the cost of chemicals, which greatly affects running costs, was 23% of that of the comparative example, and was able to save about 80%.
本発明は、悪臭ガスを活性炭の存在下で、中性〜アルカ
リ性Ｈ３Ｏ２水溶液と接触させて、脱臭する方法であり
、次の効果を有する。The present invention is a method of deodorizing malodorous gas by bringing it into contact with a neutral to alkaline H3O2 aqueous solution in the presence of activated carbon, and has the following effects.
■ 原ガスの濃度変動に強い。■ Strong against fluctuations in raw gas concentration.
■ 反応が速いためにコンパクトな装置が可能
■ Ｎａ０Ｃ１使用時のような処理ガスに新たな臭気が
混入しない。■ Compact equipment is possible due to fast reaction ■ New odors are not mixed into the processing gas as is the case when using Na0C1.
以上のように、本発明は、悪臭ガス、を迅速に確実に脱
臭する方法を提供することができる。As described above, the present invention can provide a method for quickly and reliably deodorizing malodorous gas.
第１図、第２図、第３図は、本発明の詳細な説明するた
めの装置の概略断面図、第４図は、本発明の他の実施例
を説明するための装置の概略断面図である。
１：悪臭ガス ４′ ：前段の処理ガス２：充填
塔 ４′ ：後段の 〃３：散水部
５ ：充填層
４：処理ガス ６ ：受水部
８ ：
９ ＝
１０＝
１１＝
補給水注入ライン
Ｈ２Ｏ２水溶液注入ライン
アルカリ剤注入ライン
粉末活性炭注入ライン
１２：曝気層
１３：懸濁液
１４：散気管
１５：充填層1, 2, and 3 are schematic cross-sectional views of an apparatus for explaining the present invention in detail, and FIG. 4 is a schematic cross-sectional view of an apparatus for explaining other embodiments of the present invention. It is. 1: Offensive gas 4': Processed gas in the first stage 2: Packed tower 4': Later stage 〃3: Sprinkling section
5: Filled bed 4: Processing gas 6: Water receiving section 8: 9 = 10 = 11 = Make-up water injection line H2O2 aqueous solution injection line Alkaline agent injection line Powder activated carbon injection line 12: Aeration layer 13: Suspension liquid 14: Aeration pipe 15: Filled layer
Claims (1)
６以上に調整されたＨ＿２Ｏ＿２水溶液と接触させるこ
とを特徴とする悪臭ガスの脱臭方法。 ２、悪臭ガスを、粉末活性炭を懸濁させ、かつアルカリ
剤でｐＨ６以上に調整されたＨ＿２Ｏ＿２水溶液と接触
させることを特徴とする悪臭ガスの脱臭方法。 ３、悪臭ガスとＨ＿２Ｏ＿２水溶液との接触を、充填材
を充填した充填層中で行うことを特徴とする請求項２記
載の悪臭ガスの脱臭方法。 ４、請求項１、２又は３記載の脱臭方法を、活性炭を酸
化触媒とした悪臭ガスの湿式酸化分解による脱臭処理の
あとに行うことを特徴とする悪臭ガスの脱臭方法。[Claims] 1. The malodorous gas is adjusted to pH using an alkaline agent in an activated carbon packed bed.
A method for deodorizing a malodorous gas, the method comprising contacting with an aqueous H_2O_2 solution adjusted to a concentration of 6 or more. 2. A method for deodorizing malodorous gas, which comprises bringing the malodorous gas into contact with an aqueous H_2O_2 solution in which powdered activated carbon is suspended and whose pH is adjusted to 6 or more with an alkaline agent. 3. The method for deodorizing malodorous gas according to claim 2, characterized in that the contact between the malodorous gas and the H_2O_2 aqueous solution is carried out in a packed bed filled with a filler. 4. A method for deodorizing malodorous gas, characterized in that the deodorizing method according to claim 1, 2 or 3 is carried out after deodorizing treatment by wet oxidative decomposition of malodorous gas using activated carbon as an oxidation catalyst.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2099258A JPH03296416A (en) | 1990-04-17 | 1990-04-17 | Deodorization of foul-smelling gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2099258A JPH03296416A (en) | 1990-04-17 | 1990-04-17 | Deodorization of foul-smelling gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03296416A true JPH03296416A (en) | 1991-12-27 |
Family
ID=14242692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2099258A Pending JPH03296416A (en) | 1990-04-17 | 1990-04-17 | Deodorization of foul-smelling gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03296416A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110683599A (en) * | 2019-11-14 | 2020-01-14 | 浙江金龙纸业有限公司 | Wastewater deodorant and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5594624A (en) * | 1979-01-11 | 1980-07-18 | Kurabo Ind Ltd | Deodorizing method for malodorant |
| JPS5784718A (en) * | 1980-11-17 | 1982-05-27 | Toshiba Corp | Device for removing malodorous gas containing hydrogen sulfide as main component |
-
1990
- 1990-04-17 JP JP2099258A patent/JPH03296416A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5594624A (en) * | 1979-01-11 | 1980-07-18 | Kurabo Ind Ltd | Deodorizing method for malodorant |
| JPS5784718A (en) * | 1980-11-17 | 1982-05-27 | Toshiba Corp | Device for removing malodorous gas containing hydrogen sulfide as main component |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110683599A (en) * | 2019-11-14 | 2020-01-14 | 浙江金龙纸业有限公司 | Wastewater deodorant and preparation method and application thereof |
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