JPH10118445A - Deodorizing treatment method and apparatus therefor - Google Patents
Deodorizing treatment method and apparatus thereforInfo
- Publication number
- JPH10118445A JPH10118445A JP8298139A JP29813996A JPH10118445A JP H10118445 A JPH10118445 A JP H10118445A JP 8298139 A JP8298139 A JP 8298139A JP 29813996 A JP29813996 A JP 29813996A JP H10118445 A JPH10118445 A JP H10118445A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- ozone
- contact
- treated
- solution
- 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.)
- Granted
Links
- 230000001877 deodorizing effect Effects 0.000 title claims description 41
- 238000000034 method Methods 0.000 title claims description 21
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 96
- 239000007788 liquid Substances 0.000 claims abstract description 49
- 238000004332 deodorization Methods 0.000 claims abstract description 28
- 239000002699 waste material Substances 0.000 claims abstract description 23
- 230000001590 oxidative effect Effects 0.000 claims abstract description 22
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims abstract description 17
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims abstract description 17
- 238000005273 aeration Methods 0.000 claims abstract description 16
- 238000005406 washing Methods 0.000 claims abstract description 12
- 150000001875 compounds Chemical class 0.000 claims description 30
- 230000001172 regenerating effect Effects 0.000 claims description 4
- 238000006386 neutralization reaction Methods 0.000 abstract description 9
- 239000011790 ferrous sulphate Substances 0.000 abstract description 6
- 235000003891 ferrous sulphate Nutrition 0.000 abstract description 6
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 abstract description 6
- 229910000359 iron(II) sulfate Inorganic materials 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 239000013043 chemical agent Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 87
- 238000004140 cleaning Methods 0.000 description 43
- 239000000243 solution Substances 0.000 description 37
- 239000000126 substance Substances 0.000 description 31
- 239000006227 byproduct Substances 0.000 description 9
- 241000894006 Bacteria Species 0.000 description 7
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 3
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- -1 iron (III) compound Chemical class 0.000 description 3
- 150000002506 iron compounds Chemical class 0.000 description 3
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 2
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 2
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- WQOXQRCZOLPYPM-UHFFFAOYSA-N dimethyl disulfide Chemical compound CSSC WQOXQRCZOLPYPM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 244000144972 livestock Species 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000011027 product recovery Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000005063 solubilization Methods 0.000 description 2
- 230000007928 solubilization Effects 0.000 description 2
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- QMMFVYPAHWMCMS-UHFFFAOYSA-N Dimethyl sulfide Chemical compound CSC QMMFVYPAHWMCMS-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000010800 human waste Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、いわゆる薬品洗浄
法により処理対象ガスを気液接触で酸化脱臭処理する脱
臭処理方法及び脱臭処理装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorizing method and a deodorizing apparatus for oxidizing and deodorizing a gas to be treated by gas-liquid contact by a so-called chemical cleaning method.
【０００２】[0002]
【従来の技術】従来、ごみ処理，上・下水処理，し尿処
理の各処理場や家畜関連設備，飼肥料製造工場，製紙工
場，塗料・塗装工場，ゴム・化学品工場等の産業設備，
病院等においては、種々の悪臭ガスが発生し、これらの
悪臭ガスをどのように脱臭するかが重要な課題の１つと
なっている。2. Description of the Related Art Conventionally, industrial facilities such as garbage disposal, water and sewage treatment, and human waste treatment facilities, livestock-related facilities, manure production factories, paper mills, paint and coating factories, rubber and chemical factories,
In hospitals and the like, various odorous gases are generated, and how to deodorize these odorous gases is one of the important issues.
【０００３】前記悪臭ガスとしては、アンモニア，硫化
水素，メチルメルカプタン，硫化メチル，二硫化メチ
ル，メチルアミン，トリメチルアミン，アセトアルデヒ
ド，スチレンの有臭ガス及びこれらの複合ガスがある。The odorous gases include odorous gases such as ammonia, hydrogen sulfide, methyl mercaptan, methyl sulfide, methyl disulfide, methylamine, trimethylamine, acetaldehyde and styrene, and composite gases thereof.
【０００４】そして、これらの悪臭ガスの脱臭処理方法
としては、従来より薬品洗浄法が知られている。[0004] As a method of deodorizing these malodorous gases, a chemical cleaning method has been conventionally known.
【０００５】この薬品洗浄法の脱臭処理のうち洗浄薬品
に鉄化合物（無機鉄（III） 化合物）を用いる方法は、
アルカリ洗浄や酸洗浄の脱臭処理方法に比べて薬品の取
扱いが容易であり、極めて実用的である。[0005] In the deodorizing treatment of this chemical cleaning method, a method using an iron compound (inorganic iron (III) compound) as a cleaning chemical is as follows.
The handling of chemicals is easier and more practical than the deodorizing treatment method of alkali washing and acid washing.
【０００６】そして、洗浄薬品に鉄化合物を用いた脱臭
処理方法にあっては、悪臭ガスを処理対象ガスとし、こ
のガスと洗浄薬品としての例えば硫酸第２鉄（Fe2(SO4)
3）の溶液とを接触し、この気液接触による化学反応に
より、処理対象ガスの着臭成分を酸化して脱臭する。In a deodorizing treatment method using an iron compound as a cleaning chemical, a malodorous gas is used as a gas to be treated, and this gas and a cleaning chemical such as ferric sulfate (Fe 2 (SO 4 )) are used.
The solution is brought into contact with the solution of 3 ), and the chemical reaction by the gas-liquid contact oxidizes and deodorizes the odorant component of the gas to be treated.
【０００７】このとき、処理対象ガスを硫化水素（H
2S） とすると、前記化学反応はつぎの化１の式［Ｉ］
で示され、脱臭により鉄（II）化合物である硫酸第１鉄
（FeSO4），硫酸（H2SO4）及び副成生物としての単体硫
黄（S）を含む廃液が生じる。At this time, the gas to be treated is hydrogen sulfide (H
2 S), the chemical reaction is represented by the following formula [I]
And a waste liquid containing ferrous sulfate (FeSO 4 ), sulfuric acid (H 2 SO 4 ), which is an iron (II) compound, and elemental sulfur (S) as a by-product is generated by deodorization.
【０００８】[0008]
【化１】 Fe2（SO4）3＋H2S→2FeSO4＋H2SO4＋S …［Ｉ］Embedded image Fe 2 (SO 4 ) 3 + H 2 S → 2FeSO 4 + H 2 SO 4 + S ... [I]
【０００９】そして、従来は洗浄薬品を再利用すること
が行われず、処理コストが著しく高価になる等の不都合
があった。Conventionally, the cleaning chemicals have not been reused, and there has been a problem that the processing cost becomes extremely high.
【００１０】この不都合を解消するため、特開昭６１−
２７４７２４号公報（Ｂ０１Ｄ ５３／３４），特開昭
６２−５７６３２号公報（Ｂ０１Ｄ ５３／３４）に
は、鉄酸化バクテリアを利用して前記硫酸第１鉄を硫酸
第２鉄に酸化し、この硫酸第２鉄を洗浄薬品として使用
し、洗浄薬品を再利用して脱臭処理コストを低減するこ
とが記載されている。In order to solve this problem, Japanese Patent Application Laid-Open No.
No. 274724 (B01D 53/34) and Japanese Patent Application Laid-Open No. 62-57632 (B01D 53/34) disclose that the ferrous sulfate is oxidized to ferric sulfate using iron-oxidizing bacteria. It is described that ferric iron is used as a cleaning chemical, and the cleaning chemical is reused to reduce the cost of deodorizing treatment.
【００１１】[0011]
【発明が解決しようとする課題】前記両公報に記載のよ
うに鉄酸化バクテリアを利用して脱臭後の廃液から洗浄
薬品である硫酸第２鉄を再生する場合、バクテリアの馴
致等が必要であり、メンテナンス等が容易でなく、しか
も処理液温の制約等が生じる問題点がある。As described in the above-mentioned publications, when ferric sulfate, which is a cleaning chemical, is regenerated from waste water after deodorization using iron-oxidizing bacteria, it is necessary to adjust the bacteria. In addition, there is a problem that maintenance and the like are not easy, and there are restrictions on the temperature of the processing solution.
【００１２】また、とくに悪臭ガスが硫化水素等の場
合、硫酸第２鉄を再生して洗浄薬品を再利用するのみで
は、前記式［Ｉ］からも明らかなように、脱臭により生
じた副成生物としての単体硫黄の回収処理等も必要にな
る。Further, particularly when the malodorous gas is hydrogen sulfide or the like, simply regenerating ferric sulfate and reusing the cleaning chemicals, as is apparent from the above formula [I], produces by-products generated by deodorization. It is also necessary to carry out a treatment for recovering elemental sulfur as an organism.
【００１３】さらに、薬品洗浄の気液接触で脱臭されず
に残留した処理対象ガスは、そのまま大気に放出等され
ることになり、脱臭性能の向上が図れない問題点もあ
る。Further, the gas to be treated remaining without being deodorized due to the gas-liquid contact in the chemical cleaning is released to the atmosphere as it is, and there is a problem that the deodorizing performance cannot be improved.
【００１４】本発明は、バクテリア（生物）を利用する
ことなく洗浄薬品を再利用し得るようにし、メンテナン
ス等を容易にするとともに副生成物の回収処理等も不要
にして薬品洗浄法で悪臭ガスを脱臭する脱臭処理方法及
び脱臭処理装置を提供することを目的とする。The present invention makes it possible to reuse cleaning chemicals without using bacteria (living organisms), thereby facilitating maintenance and the like, and eliminating the need for recovery of by-products. It is an object of the present invention to provide a deodorizing treatment method and a deodorizing treatment device for deodorizing water.
【００１５】また、薬品洗浄の気液接触で脱臭されなか
った処理対象ガスを再度脱臭し得るようにして脱臭性能
を大幅に向上することも目的とする。It is another object of the present invention to significantly improve the deodorizing performance by enabling the gas to be treated which has not been deodorized by the gas-liquid contact in chemical cleaning to be deodorized again.
【００１６】[0016]
【課題を解決するための手段】前記の目的を達成するた
めに、この出願の請求項１の脱臭処理方法においては、
処理対象ガスと硫酸第２鉄等の酸化作用を有する化合物
の溶液とを接触して処理対象ガスを酸化脱臭し、この脱
臭により生じた廃液をオゾン曝気により酸化して前記化
合物の溶液をオゾンを含んだ状態で再生し、再生した前
記化合物の溶液を処理対象ガスに接触し，前記化合物の
溶液を再利用して脱臭を継続する。Means for Solving the Problems In order to achieve the above-mentioned object, in the deodorizing treatment method of claim 1 of the present application,
The gas to be treated is brought into contact with a solution of a compound having an oxidizing effect such as ferric sulfate to oxidize and deodorize the gas to be treated, and the waste liquid generated by the deodorization is oxidized by ozone aeration to convert the solution of the compound into ozone. The mixture is regenerated in a state where it is contained, the regenerated solution of the compound is brought into contact with the gas to be treated, and the solution of the compound is reused to continue deodorization.
【００１７】したがって、気液接触の脱臭により生じた
廃液をオゾンガスの曝気によって酸化することにより、
洗浄薬品としての硫酸第２鉄等の酸化作用を有する化合
物の溶液が再生され、この溶液を再利用して脱臭が続け
られる。Therefore, by oxidizing the waste liquid generated by the deodorization of gas-liquid contact by aeration of ozone gas,
A solution of an oxidizing compound such as ferric sulfate as a cleaning chemical is regenerated, and the solution is reused to continue deodorization.
【００１８】このとき、廃液の酸化がオゾンガスを用い
て行われ、鉄酸化バクテリアを用いる場合の馴致等の煩
雑なメンテナンスが不要であり、処理温度を幅広くでき
る。At this time, the waste liquid is oxidized by using ozone gas, so that complicated maintenance such as adaptation when using iron-oxidizing bacteria is not required, and the processing temperature can be widened.
【００１９】しかも、再生された化合物の溶液がオゾン
を含み、その酸化力が向上するとともに、このオゾンを
含んだ化合物の溶液と処理対象ガスとの気液接触により
オゾンによる脱臭及び単体硫黄等の副生成物の可溶化が
期待でき、脱臭力の向上が図れるとともに、副生成物の
回収処理も不要になる。In addition, the solution of the regenerated compound contains ozone, the oxidizing power of the solution is improved, and the solution of the compound containing ozone and the gas to be treated come into gas-liquid contact to deodorize with ozone and remove elemental sulfur and the like. The solubilization of by-products can be expected, the deodorizing power can be improved, and the by-product recovery process is not required.
【００２０】また、請求項２記載の脱臭処理方法におい
ては、処理対象ガスと酸化作用を有する化合物の溶液と
の接触環境の排出ガスとオゾン曝気の排オゾンガスとを
接触して排出ガスに含まれた処理対処ガスを再脱臭する
ことも行う。Further, in the deodorizing treatment method according to the second aspect, the exhaust gas in the contact environment between the gas to be treated and the solution of the compound having an oxidizing action and the ozone gas from the ozone aeration are included in the exhaust gas. Re-deodorize the treated gas.
【００２１】したがって、処理対象ガスと化合物の溶液
との気液接触により脱臭されなかった処理対象ガスが、
オゾン曝気の排オゾンガスを利用して再脱臭され、オゾ
ンガスを有効に利用して脱臭性能を飛躍的に向上するこ
とができる。Therefore, the gas to be treated which has not been deodorized by the gas-liquid contact between the gas to be treated and the solution of the compound,
The deodorization is performed again using the ozone gas discharged from the ozone aeration, and the deodorization performance can be significantly improved by effectively using the ozone gas.
【００２２】つぎに、請求項３の脱臭処理装置において
は、処理対象ガスと硫酸第２鉄等の酸化作用を有する化
合物の溶液とが供給され，処理対象ガスと前記化合物の
溶液とを接触して処理対象ガスを酸化脱臭する主処理槽
と、主処理槽の脱臭により生じた廃液をオゾン曝気によ
り酸化して前記化合物の溶液をオゾンを含んだ状態で再
生し，再生した前記化合物の溶液を主処理槽に還流して
供給するオゾン接触槽とを備える。Next, in the deodorizing treatment apparatus of the third aspect, the gas to be treated and a solution of a compound having an oxidizing effect such as ferric sulfate are supplied, and the gas to be treated is brought into contact with the solution of the compound. A main treatment tank for oxidizing and deodorizing the gas to be treated, and a waste solution generated by deodorization of the main treatment tank being oxidized by ozone aeration to regenerate a solution of the compound containing ozone, and regenerating the solution of the compound. An ozone contact tank for supplying the main processing tank with reflux.
【００２３】したがって、主処理槽の気液接触の脱臭に
より生じた廃液がオゾン接触槽のオゾン曝気で酸化さ
れ、この酸化により前記気液接触の洗浄薬品としての酸
化作用を有する化合物の溶液がオゾンを含んだ状態で再
生され、この溶液が主処理槽に戻されて再利用される。Therefore, the waste liquid generated by the deodorization of the gas-liquid contact in the main treatment tank is oxidized by the ozone aeration in the ozone contact tank, and this oxidation causes the solution of the compound having an oxidizing action as a cleaning chemical for the gas-liquid contact to become ozone-containing. And the solution is returned to the main processing tank and reused.
【００２４】そのため、請求項１記載の脱臭処理方法に
より処理対象ガスを脱臭する新規な脱臭処理装置を提供
できる。Therefore, a novel deodorizing apparatus for deodorizing a gas to be treated can be provided by the deodorizing method according to the first aspect.
【００２５】さらに、請求項４記載の脱臭処理装置にお
いては、主処理槽の排出ガスとオゾン接触槽の排オゾン
ガスとが供給され，排出ガスと排オゾンガスとを接触し
て排出ガスに含まれた処理対象ガスを再脱臭するオゾン
洗浄塔も備える。Furthermore, in the deodorizing apparatus according to the fourth aspect, the exhaust gas from the main processing tank and the exhausted ozone gas from the ozone contact tank are supplied, and the exhaust gas and the exhausted ozone gas come into contact with each other and are contained in the exhaust gas. An ozone washing tower for deodorizing the gas to be treated is also provided.
【００２６】したがって、オゾン洗浄塔によりオゾン曝
気の排オゾンガスを利用して主処理槽で脱臭されなかっ
た処理対象ガスが再脱臭され、請求項２の脱臭処理方法
により処理対象ガスを脱臭する脱臭処理装置を提供でき
る。Therefore, the gas to be treated that has not been deodorized in the main treatment tank is re-deodorized using the ozone gas discharged from the ozone aeration by the ozone cleaning tower, and the gas to be treated is deodorized by the deodorizing method according to claim 2. Equipment can be provided.
【００２７】[0027]
【発明の実施の形態】本発明の実施の形態につき、図１
及び図２を参照して説明する。 （１形態）まず、請求項１及び請求項３に対応する本発
明の実施の１形態につき、図１を参照して説明する。図
１は脱臭処理装置の構成を示し、各種処理場，産業設
備，病院等の悪臭発生源１の悪臭ガスが、処理対象ガス
として、配管２を介して主処理槽である並流接触式スク
ラバ３に連続的に供給され、このスクラバ３内の上面中
央に設けられたガス噴射部４から処理対象ガスが連続的
に噴射されてスクラバ３内に放出される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG.
This will be described with reference to FIG. (First Embodiment) First, an embodiment of the present invention corresponding to claims 1 and 3 will be described with reference to FIG. FIG. 1 shows a configuration of a deodorizing treatment apparatus, in which a malodorous gas from a malodor source 1 in various treatment plants, industrial facilities, hospitals, etc. is used as a gas to be treated, and a co-current contact scrubber as a main treatment tank via a pipe 2. The gas to be treated is continuously injected from a gas injection unit 4 provided at the center of the upper surface of the scrubber 3 and is discharged into the scrubber 3.
【００２８】また、オゾン接触槽５の上部出水口から配
管６を介してスクラバ３に、洗浄薬品の溶液としての酸
化作用を有する化合物の溶液が連続的に供給され、この
溶液がスクラバ３内の上面周部に設けられた１又は複数
の洗浄液噴射部７から連続的に霧状に噴出されてスクラ
バ３内に放出される。Further, a solution of a compound having an oxidizing action as a cleaning chemical solution is continuously supplied from the upper water outlet of the ozone contact tank 5 to the scrubber 3 via a pipe 6. The cleaning liquid is continuously ejected in a mist form from one or a plurality of cleaning liquid ejecting sections 7 provided on the peripheral portion of the upper surface and is discharged into the scrubber 3.
【００２９】そして、この実施の形態においては、酸化
作用を有する化合物の溶液（洗浄薬品の溶液）が、薬品
の取扱いが容易な鉄化合物（無機鉄（III） 化合物）の
１例である硫酸第２鉄の溶液（以下洗浄液という）から
なり、スクラバ３内において、処理対象ガスと洗浄液と
が連続的に接触し、この気液連続接触により前記式
［Ｉ］の化学反応が生じ、処理対象ガスの着臭成分が酸
化されて脱臭され、硫酸第２鉄は硫酸第１鉄に変化す
る。In this embodiment, a solution of a compound having an oxidizing action (a solution of a cleaning chemical) is an example of an iron compound (an inorganic iron (III) compound) which is easy to handle the chemical. The gas to be treated and the cleaning solution are continuously contacted in the scrubber 3 in the scrubber 3, and the gas-liquid continuous contact causes the chemical reaction of the above formula [I], and the gas to be treated is Is oxidized and deodorized, and ferric sulfate changes to ferrous sulfate.
【００３０】さらに、この脱臭により生じてスクラバ３
の下部に貯った廃液は配管８を介して中和槽９に送ら
れ、この中和槽９は必要に応じて水酸化ナトリウム，石
灰等の中和薬品が投入され、この中和薬品により廃液が
中性又は酸性，好ましくは弱酸性を示すように中和処理
される。Further, a scrubber 3 generated by this deodorization is used.
The waste liquid stored in the lower part of the tank is sent to a neutralization tank 9 through a pipe 8, and the neutralization tank 9 is charged with a neutralizing chemical such as sodium hydroxide and lime as needed. The waste liquid is neutralized so as to be neutral or acidic, preferably weakly acidic.
【００３１】これは、後段のオゾン曝気において、アル
カリ性では水中に溶存するオゾンの自己分解反応が促進
されるためであり、廃液によっては中和槽９による中和
処理を省くこともできる。This is because, in the subsequent ozone aeration, the self-decomposition reaction of ozone dissolved in water is promoted in the alkaline condition, and the neutralization treatment by the neutralization tank 9 can be omitted depending on the waste liquid.
【００３２】そして、中和槽９により処理された廃液は
配管１０を通ってオゾン接触槽５に、その下部の受水口
から供給される。Then, the waste liquid treated by the neutralization tank 9 is supplied to the ozone contact tank 5 through a pipe 10 from a water receiving port below the waste liquid.
【００３３】また、オゾン発生装置１１から配管１２を
介してオゾン接触槽５にオゾンガスが連続的に供給さ
れ、オゾン接触槽５内の下面に設けられた散気板１３か
らオゾンガスが放出される。Further, the ozone gas is continuously supplied from the ozone generator 11 to the ozone contact tank 5 via the pipe 12, and the ozone gas is released from the diffuser plate 13 provided on the lower surface in the ozone contact tank 5.
【００３４】そのため、オゾン接触槽５において、中和
処理後のスクラバ３の廃液とオゾンガスとが接触し、こ
の気液接触により廃液中の硫酸第１鉄がオゾンによって
酸化されて硫酸第２鉄に戻され、硫酸第２鉄の洗浄液が
再生される。Therefore, in the ozone contact tank 5, the waste liquid of the scrubber 3 after the neutralization treatment comes into contact with the ozone gas, and by this gas-liquid contact, ferrous sulfate in the waste liquid is oxidized by ozone to ferric sulfate. It is returned and the cleaning solution of ferric sulfate is regenerated.
【００３５】すなわち、つぎの化２の式［II］に示すよ
うに、洗浄液は鉄（III） の状態から脱臭によって鉄
（II）の状態に還元された後、オゾン曝気により酸化さ
れて再び鉄（III） の状態に戻り、再生される。That is, as shown in the following formula [II] of the chemical formula 2, the cleaning liquid is reduced from the state of iron (III) to the state of iron (II) by deodorization, and then oxidized by aeration with ozone and re-oxidized. It returns to the state of (III) and is reproduced.
【００３６】[0036]
【化２】 Embedded image
【００３７】ところで、オゾン曝気により再生された洗
浄液は、オゾンガスの一部が溶け込んで過剰のオゾンを
含んだ状態にあり、このオゾンにより洗浄液は鉄（II
I） の状態に安定に保たれる。By the way, the cleaning liquid regenerated by the ozone aeration is in a state where a part of the ozone gas is dissolved and contains excess ozone, and the cleaning liquid is made of iron (II) by the ozone.
I) is kept stable in the state of.
【００３８】そして、オゾン接触槽５のオゾンを含んだ
洗浄液が配管６を介してスクラバ３に供給され、洗浄液
が再利用されて脱臭が継続される。Then, the cleaning liquid containing ozone in the ozone contact tank 5 is supplied to the scrubber 3 via the pipe 6, and the cleaning liquid is reused to continue deodorization.
【００３９】このとき、脱臭後のスクラバ３の廃液から
オゾンを利用して洗浄液が再生され、従来の鉄酸化バク
テリアを利用して再生する場合のような馴致等の煩雑な
メンテナンスは不要である。At this time, the cleaning liquid is regenerated using the ozone from the waste liquid of the scrubber 3 after the deodorization, and complicated maintenance such as adaptation as in the case of regenerating using the conventional iron-oxidizing bacteria is unnecessary.
【００４０】しかも、オゾン曝気においては、液温が低
いときには溶液中のオゾン濃度が高く保たれ、処理液温
を比較的幅広くとることができる。In addition, in ozone aeration, when the liquid temperature is low, the ozone concentration in the solution is kept high, and the temperature of the processing liquid can be made relatively wide.
【００４１】さらに、洗浄液がオゾンを含むため、スク
ラバ３内で処理対象ガスが洗浄薬品だけでなくオゾンと
も接触し、例えば処理対象ガスが硫化水素の場合、つぎ
の化３の式［III］ に示すように、オゾンによる脱臭効
果も生じて脱臭力が向上する。Further, since the cleaning liquid contains ozone, the gas to be treated comes into contact with not only the cleaning chemical but also ozone in the scrubber 3. For example, when the gas to be treated is hydrogen sulfide, the following formula [III] As shown, the deodorizing effect of ozone also occurs, and the deodorizing power is improved.
【００４２】[0042]
【化３】 Embedded image
【００４３】その上、スクラバ３内の脱臭処理により生
じる式［Ｉ］の副生成物である単体硫黄も、洗浄液中の
オゾンにより、つぎの化４の式［IV］に示すように硫酸
になって廃液に溶け込み、その回収処理が不要になる。In addition, elemental sulfur which is a by-product of the formula [I] generated by the deodorizing treatment in the scrubber 3 is also converted into sulfuric acid by the ozone in the cleaning solution as shown in the following formula [IV] of the following chemical formula 4. And dissolves in the waste liquid, eliminating the need for recovery processing.
【００４４】[0044]
【化４】 Embedded image
【００４５】なお、オゾン接触槽５の排オゾンガスは処
理されて大気に放出される。The ozone gas discharged from the ozone contact tank 5 is treated and released to the atmosphere.
【００４６】また、配管１０の途中に廃液用の弁１４が
分岐して設けられ、この弁１４の操作により、中和処理
後の不要液が適宜排出される。A waste liquid valve 14 is provided in the middle of the pipe 10 for branching, and by operating the valve 14, the unnecessary liquid after the neutralization treatment is appropriately discharged.
【００４７】（他の形態）つぎに、請求項２及び請求項
４に対応する本発明の実施の他の形態につき、図２を参
照して説明する。図２において、図１と同一符号は同一
のものを示し、図１と異なる点は、向流接触式オゾン洗
浄塔１５及び排ガス処理塔１６を付加した点である。(Other Embodiments) Next, another embodiment of the present invention corresponding to claims 2 and 4 will be described with reference to FIG. 2, the same reference numerals as those in FIG. 1 denote the same parts, and the difference from FIG. 1 is that a countercurrent contact type ozone washing tower 15 and an exhaust gas treatment tower 16 are added.
【００４８】そして、スクラバ３の下部の排気口から配
管１７を介してオゾン洗浄塔１５に、スクラバ３の接触
環境の排出ガス，すなわちスクラバ３内の気液接触によ
り酸化されずに残った処理対象ガスを含む排出ガスが供
給され、この排出ガスがオゾン洗浄塔１５の左側内面に
設けられたガス噴射部１８から水平噴射される。Then, the exhaust gas in the contact environment of the scrubber 3, ie, the processing target remaining without being oxidized due to the gas-liquid contact in the scrubber 3, enters the ozone washing tower 15 from the exhaust port at the lower part of the scrubber 3 through the pipe 17. An exhaust gas containing gas is supplied, and the exhaust gas is horizontally injected from a gas injection unit 18 provided on the left inner surface of the ozone cleaning tower 15.
【００４９】また、オゾン接触槽５の上部排気口から配
管１９を介してオゾン洗浄塔１５に排オゾンガスが供給
され、この排オゾンガスがオゾン洗浄塔１５の右側内面
に設けられたガス噴射部１８から水平噴射される。Further, exhausted ozone gas is supplied from the upper exhaust port of the ozone contact tank 5 to the ozone cleaning tower 15 via a pipe 19, and the exhausted ozone gas is supplied from a gas injection section 18 provided on the right inner surface of the ozone cleaning tower 15. It is injected horizontally.
【００５０】そのため、オゾン洗浄塔１５内において、
スクラバ３の排出ガスとオゾン接触槽５の排オゾンガス
とが、気体同士で対向接触し、この接触により排出ガス
に含まれた処理対処ガスが排オゾンガスで酸化されて再
脱臭される。Therefore, in the ozone cleaning tower 15,
The exhaust gas of the scrubber 3 and the exhausted ozone gas of the ozone contact tank 5 are in opposing contact with each other, and due to this contact, the treatment gas contained in the exhaust gas is oxidized by the exhausted ozone gas and deodorized again.
【００５１】そして、オゾン洗浄塔１５の再脱臭後のガ
スは配管２０を介して排ガス処理塔１６に送られ、この
処理塔１６の触媒処理等が施された後大気に放出され
る。The gas after re-deodorization of the ozone washing tower 15 is sent to an exhaust gas treatment tower 16 via a pipe 20, and after being subjected to a catalytic treatment or the like of the treatment tower 16, the gas is released to the atmosphere.
【００５２】したがって、スクラバ３で脱臭されなかっ
た処理対象ガスが排オゾンガスを利用して再脱臭され、
オゾンガスを有効に利用して脱臭性能を大幅に向上する
ことができる。Therefore, the gas to be treated which has not been deodorized by the scrubber 3 is deodorized again by using the exhausted ozone gas.
The deodorizing performance can be greatly improved by effectively using ozone gas.
【００５３】なお、オゾン洗浄塔１５の脱臭により生じ
た廃液は配管２１を介して中和槽９に供給され、スクラ
バ３の廃液とともに中和処理される。The waste liquid generated by the deodorization of the ozone washing tower 15 is supplied to the neutralization tank 9 via the pipe 21 and neutralized together with the waste liquid of the scrubber 3.
【００５４】ところで、前記両実施の形態において、主
処理槽はスクラバ３のような並流接触式スクラバでな
く、向流接触式スクラバ等であってもよく、また、オゾ
ン洗浄塔が並流接触式であってもよい。In the above two embodiments, the main treatment tank may be a countercurrent contact type scrubber or the like instead of the cocurrent contact type scrubber such as the scrubber 3. It may be an expression.
【００５５】また、洗浄液は硫酸第２鉄の溶液以外の酸
化作用を有し、酸化によって再生可能な種々の化合物の
溶液であってもよいのは勿論である。Further, the cleaning solution may be a solution of various compounds having an oxidizing action other than the ferric sulfate solution and reproducible by oxidation.
【００５６】そして、本発明は種々の悪臭ガスの薬品洗
浄の脱臭に適用することができ、とくに、着臭成分が高
濃度になるし尿処理場や家畜関連産業の産業設備等の脱
臭に著しい効果を奏する。The present invention can be applied to the deodorization of chemical cleaning of various odorous gases, and particularly has a remarkable effect on the deodorization of odorous components at high concentrations and in the deodorization of urine treatment plants and industrial equipment of the livestock related industry. To play.
【００５７】[0057]
【発明の効果】本発明は、以下に記載する効果を奏す
る。まず、請求項１の脱臭処理方法においては、脱臭に
より生じた廃液をオゾンガスを用いて酸化することによ
り、洗浄薬品の溶液としての酸化作用を有する化合物の
溶液が再生され、バクテリアを利用して再生する場合の
馴致等の煩雑なメンテナンスを不要にし、しかも、処理
温度の制約等も緩やかとなり、洗浄薬品を再利用して薬
品洗浄法による悪臭ガスの脱臭を行うことができる。The present invention has the following effects. First, in the deodorizing treatment method of the first aspect, the solution of the compound having an oxidizing effect as a cleaning chemical solution is regenerated by oxidizing the waste liquid generated by the deodorization using ozone gas, and is regenerated using bacteria. In such a case, complicated maintenance such as adaptation is not required, and the restriction on the processing temperature is relaxed, so that the cleaning chemicals can be reused to remove the odorous gas by the chemical cleaning method.
【００５８】さらに、再生された化合物の溶液がオゾン
を含み、洗浄薬品の酸化作用を安定化することができる
とともに、オゾンを含んだ化合物の溶液と処理対象ガス
（悪臭ガス）との気液接触により、オゾンによる脱臭及
び単体硫黄等の副生成物の可溶化も期待でき、脱臭力の
一層の向上を図ることができるとともに、副生成物の回
収処理も不要にすることができる。Furthermore, the solution of the regenerated compound contains ozone, which can stabilize the oxidizing action of the cleaning chemicals, and also provides gas-liquid contact between the solution of the compound containing ozone and the gas to be treated (odorous gas). Thereby, deodorization by ozone and solubilization of by-products such as elemental sulfur can be expected, and the deodorizing power can be further improved, and the process of collecting by-products can be omitted.
【００５９】そのため、メンテナンス等が容易で副生成
物の回収処理等を行う必要もない処理方法で洗浄薬品を
再利用して悪臭ガスを良好に脱臭することができる。Therefore, the cleaning chemicals can be reused by a processing method which is easy to maintain and does not need to carry out the by-product recovery processing and the like, so that the odorous gas can be satisfactorily deodorized.
【００６０】つぎに、請求項２の脱臭処理方法において
は、処理対象ガスと酸化作用を有する化合物の溶液との
気液接触で脱臭されなかった処理対象ガスを、オゾン曝
気の排オゾンガスを利用して再脱臭することができ、オ
ゾンガスを有効に利用して脱臭性能を飛躍的に向上する
ことができる。Next, in the deodorizing treatment method of the present invention, the gas to be treated which has not been deodorized by the gas-liquid contact between the gas to be treated and the solution of the compound having an oxidizing action is used as the ozone gas discharged from the ozone aeration. The deodorizing performance can be remarkably improved by effectively utilizing the ozone gas.
【００６１】さらに、請求項３，請求項４の脱臭処理装
置においては、主処理槽とオゾン接触槽，これらの槽と
オゾン洗浄塔を備えたため、請求項１，請求項２の脱臭
処理を実現した新規な脱臭処理装置を提供することがで
きる。Further, in the deodorizing apparatus of the third and fourth aspects, the main processing tank and the ozone contact tank, and these tanks and the ozone washing tower are provided, so that the deodorizing processing of the first and second aspects is realized. Thus, a novel deodorizing treatment device can be provided.
【図１】本発明の実施の１形態の装置説明図である。FIG. 1 is an explanatory view of an apparatus according to an embodiment of the present invention.
【図２】本発明の実施の他の形態の装置説明図である。FIG. 2 is an explanatory view of an apparatus according to another embodiment of the present invention.
１ 悪臭ガス発生源 ３ 主処理槽としての並流接触式スクラバ ５ オゾン接触槽 １５ 向流接触式オゾン洗浄塔 DESCRIPTION OF SYMBOLS 1 Odor gas generation source 3 Co-current contact scrubber as main treatment tank 5 Ozone contact tank 15 Countercurrent contact ozone washing tower
Claims (4)
を有する化合物の溶液とを接触して前記処理対象ガスを
酸化脱臭し、 該脱臭により生じた廃液をオゾン曝気により酸化して前
記化合物の溶液をオゾンを含んだ状態で再生し、 再生した前記化合物の溶液を前記処理対象ガスに接触
し，前記化合物の溶液を再利用して前記脱臭を継続する
ことを特徴とする脱臭処理方法。1. A gas to be treated is brought into contact with a solution of a compound having an oxidizing effect such as ferric sulfate to oxidize and deodorize the gas to be treated, and a waste liquid generated by the deodorization is oxidized by aeration with ozone to produce the gas. A deodorizing treatment method comprising regenerating a solution of a compound containing ozone, contacting the regenerated solution of the compound with the gas to be treated, and reusing the solution of the compound to continue the deodorization. .
の溶液との接触環境の排出ガスとオゾン曝気の排オゾン
ガスとを接触して前記排出ガスに含まれた前記処理対処
ガスを再脱臭することを特徴とする請求項１記載の脱臭
処理方法。2. An exhaust gas in a contact environment between a gas to be treated and a solution of a compound having an oxidizing action is brought into contact with an exhaust ozone gas from an ozone aeration to re-deodorize the treatment gas contained in the exhaust gas. The deodorizing treatment method according to claim 1, wherein:
を有する化合物の溶液とが供給され，前記処理対象ガス
と前記化合物の溶液とを接触して前記処理対象ガスを酸
化脱臭する主処理槽と、 前記主処理槽の脱臭により生じた廃液をオゾン曝気によ
り酸化して前記化合物の溶液をオゾンを含んだ状態で再
生し，再生した前記化合物の溶液を前記主処理槽に還流
して供給するオゾン接触槽とを備えたことを特徴とする
脱臭処理装置。3. A gas to be treated and a solution of an oxidizing compound such as ferric sulfate are supplied, and the gas to be treated is brought into contact with the solution of the compound to oxidize and deodorize the gas to be treated. A treatment tank, and a waste liquid generated by deodorization of the main treatment tank is oxidized by ozone aeration to regenerate a solution of the compound in a state containing ozone, and the regenerated solution of the compound is refluxed to the main treatment tank. A deodorizing treatment device comprising a supply ozone contact tank.
オゾンガスとが供給され，前記排出ガスと前記排オゾン
ガスとを接触して前記排出ガスに含まれた処理対象ガス
を再脱臭するオゾン洗浄槽を備えたことを特徴とする請
求項３記載の脱臭処理装置。4. An ozone which is supplied with an exhaust gas of a main processing tank and an exhaust ozone gas of an ozone contact tank, and makes the exhaust gas and the exhaust ozone gas contact to re-deodorize a gas to be treated contained in the exhaust gas. The deodorizing treatment device according to claim 3, further comprising a washing tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8298139A JP3024573B2 (en) | 1996-10-21 | 1996-10-21 | Deodorization treatment method and deodorization treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8298139A JP3024573B2 (en) | 1996-10-21 | 1996-10-21 | Deodorization treatment method and deodorization treatment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10118445A true JPH10118445A (en) | 1998-05-12 |
| JP3024573B2 JP3024573B2 (en) | 2000-03-21 |
Family
ID=17855702
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8298139A Expired - Fee Related JP3024573B2 (en) | 1996-10-21 | 1996-10-21 | Deodorization treatment method and deodorization treatment device |
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| Country | Link |
|---|---|
| JP (1) | JP3024573B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100347845B1 (en) * | 1999-10-06 | 2002-08-07 | 한국과학기술연구원 | Method of removing malodor by a catalytic wet oxidation |
| KR101118538B1 (en) * | 2009-08-26 | 2012-02-24 | 재단법인 포항산업과학연구원 | Method for removing hydrogen sulfide by using ferrous compound |
| WO2024043678A1 (en) * | 2022-08-24 | 2024-02-29 | (주)이앤켐솔루션 | Method for preparing amorphous iron sulfide carrier for removal of nitrogen in water |
-
1996
- 1996-10-21 JP JP8298139A patent/JP3024573B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100347845B1 (en) * | 1999-10-06 | 2002-08-07 | 한국과학기술연구원 | Method of removing malodor by a catalytic wet oxidation |
| KR101118538B1 (en) * | 2009-08-26 | 2012-02-24 | 재단법인 포항산업과학연구원 | Method for removing hydrogen sulfide by using ferrous compound |
| WO2024043678A1 (en) * | 2022-08-24 | 2024-02-29 | (주)이앤켐솔루션 | Method for preparing amorphous iron sulfide carrier for removal of nitrogen in water |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3024573B2 (en) | 2000-03-21 |
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