JPH02258015A - Deodorization method and apparatus - Google Patents
Deodorization method and apparatusInfo
- Publication number
- JPH02258015A JPH02258015A JP1298134A JP29813489A JPH02258015A JP H02258015 A JPH02258015 A JP H02258015A JP 1298134 A JP1298134 A JP 1298134A JP 29813489 A JP29813489 A JP 29813489A JP H02258015 A JPH02258015 A JP H02258015A
- Authority
- JP
- Japan
- Prior art keywords
- ozone
- gas
- malodorous
- components
- deodorizing
- 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
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000004332 deodorization Methods 0.000 title abstract description 8
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 85
- 238000003756 stirring Methods 0.000 claims abstract description 24
- 239000003054 catalyst Substances 0.000 claims abstract description 23
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 8
- 238000001179 sorption measurement Methods 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 claims description 85
- 230000001877 deodorizing effect Effects 0.000 claims description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000007790 solid phase Substances 0.000 claims description 11
- 238000005868 electrolysis reaction Methods 0.000 claims description 8
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 7
- 239000007791 liquid phase Substances 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 18
- 239000000203 mixture Substances 0.000 abstract description 3
- 230000007062 hydrolysis Effects 0.000 abstract 1
- 238000006460 hydrolysis reaction Methods 0.000 abstract 1
- 235000019645 odor Nutrition 0.000 description 11
- 241000264877 Hippospongia communis Species 0.000 description 10
- 238000002156 mixing Methods 0.000 description 10
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 6
- 239000012071 phase Substances 0.000 description 6
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 3
- 239000004113 Sepiolite Substances 0.000 description 3
- -1 Seviolite Chemical compound 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910052624 sepiolite Inorganic materials 0.000 description 3
- 235000019355 sepiolite Nutrition 0.000 description 3
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 101100054666 Streptomyces halstedii sch3 gene Proteins 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 2
- 150000001339 alkali metal compounds Chemical class 0.000 description 2
- 150000001341 alkaline earth metal compounds Chemical class 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000013980 iron oxide Nutrition 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000010457 zeolite Substances 0.000 description 2
- 239000005751 Copper oxide Substances 0.000 description 1
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 description 1
- 229910052774 Proactinium Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000003975 animal breeding Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 229910000428 cobalt oxide Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 150000002019 disulfides Chemical class 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000009775 high-speed stirring Methods 0.000 description 1
- 239000010800 human waste Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- PPNAOCWZXJOHFK-UHFFFAOYSA-N manganese(2+);oxygen(2-) Chemical class [O-2].[Mn+2] PPNAOCWZXJOHFK-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 229910017464 nitrogen compound Inorganic materials 0.000 description 1
- 150000002830 nitrogen compounds Chemical class 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical class [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
【発明の詳細な説明】 （イ）産業上の利用分野 この発明は、脱臭方法及び脱臭装置に関する。[Detailed description of the invention] (b) Industrial application field The present invention relates to a deodorizing method and a deodorizing device.
さらに詳しくは、例えば、し尿処理場、下水処理場、ご
み処理場、動物飼育室、食品工場、一般家庭などの悪臭
発生源からの悪臭ガスの脱臭を効率よく行う方法及び装
置に関するものである。More specifically, the present invention relates to a method and apparatus for efficiently deodorizing malodorous gases from sources such as human waste treatment plants, sewage treatment plants, garbage treatment plants, animal breeding rooms, food factories, and general households.
（ロ）従来の技術
上述のごとき各種悪臭発生源からの悪臭は、単に不快感
を与えるのみならず、健康を害する等、環境衛生上大き
な問題となっている。(B) Prior Art The malodors from the various malodor sources mentioned above not only cause discomfort, but also pose a serious problem in terms of environmental hygiene, such as harming health.
そこで、従来から、かかる悪臭を除去する脱臭法として
、種々の方法が採られており、その一つとして、発生す
る悪臭成分を含有するガスにオゾンを添加し、悪臭成分
を酸化分解して除去するいわゆるオゾン酸化法が知られ
ている。そして、悪臭成分の分解効率を上げると共に余
剰のオゾンを分解除去するために、オゾン添加後の悪臭
ガスを炭素質材料上に金属酸化物を担持させた触媒層に
導入する方法も提案されている（特開昭５４−１１９３
７１号公報）。Therefore, various deodorizing methods have been used to remove such bad odors.One of them is to add ozone to the gas containing the malodorous components generated, and remove the malodorous components by oxidation and decomposition. The so-called ozone oxidation method is known. In order to increase the decomposition efficiency of malodorous components and decompose and remove excess ozone, a method has also been proposed in which the malodorous gas after ozone is added is introduced into a catalyst layer in which metal oxides are supported on a carbonaceous material. (Unexamined Japanese Patent Publication No. 54-1193
Publication No. 71).
（ハ）発明が解決しようとする課題
悪臭ガス中の悪臭成分は、その発生源によって異なるが
、一般に硫化水素、メルカプタン類、スルフィド類、ジ
スルフィド類などのイオウ化合物、アンモニア、アミン
類などの窒素化合物、炭化水素類、アルデヒド類、ケト
ン類、カルボン酸類などの宵機化合物などがあげられる
。悪臭ガスはこのように多成分で、かつ極低濃度である
ため、脱臭効率を上げるには、気相でのオゾンとの反応
率（利用率）をあげたり、上記した触媒層てのオゾン分
解の負荷を低減する必要がある。(c) Problems to be solved by the invention The malodorous components in malodorous gas vary depending on the source, but generally include hydrogen sulfide, sulfur compounds such as mercaptans, sulfides, and disulfides, and nitrogen compounds such as ammonia and amines. , hydrocarbons, aldehydes, ketones, and carboxylic acids. Because malodorous gases are multi-component and have extremely low concentrations, in order to increase deodorization efficiency, it is necessary to increase the reaction rate (utilization rate) with ozone in the gas phase, or to reduce ozone decomposition using the catalyst layer described above. It is necessary to reduce the load on
しかしながら、オゾン酸化法を利用した従来の脱臭法に
おいてはオゾンの悪臭ガスへの添加は単にオゾン発生器
からのオゾン供給路を悪臭ガス供給流路へ接続するか、
悪臭ガス供給流路内にオゾン発生器を配設することによ
りなされており、オゾンと悪臭ガスとの混合は悪臭ガス
のフロー下での自然混合に委ねられている。ことに、悪
臭ガス供給流路の前段又は後段には悪臭ガス供給用の送
風手段としてのファンが取り付けられる場合が多いが、
これらは単に送風用に用いられているものであり、悪臭
ガスとオゾンとの直接的な混合に役立つものではない。However, in conventional deodorizing methods using ozone oxidation, ozone is added to malodorous gas by simply connecting the ozone supply path from the ozone generator to the malodorous gas supply flow path, or
This is achieved by disposing an ozone generator in the foul-smelling gas supply channel, and the mixing of ozone and the foul-smelling gas is left to natural mixing under the flow of the foul-smelling gas. In particular, a fan as a blowing means for supplying malodorous gas is often installed at the front or rear stage of the malodorous gas supply channel.
These are simply used for blowing air, and are not useful for direct mixing of malodorous gas and ozone.
そして、本発明者の認識によれば、かかる従来の脱臭方
法においては悪臭ガスにオゾンを添加しても悪臭成分と
オゾンとの混合が不充分な状態となり、触媒層に導いて
も脱臭効率が悪いという問題があった。According to the present inventor's knowledge, in such conventional deodorizing methods, even if ozone is added to the malodorous gas, the malodorous components and ozone are not sufficiently mixed, and even if the ozone is introduced into the catalyst layer, the deodorizing efficiency is reduced. There was a problem with it being bad.
（ニ）課題を解決するための手段 この発明は、上記問題点を解決するものである。(d) Means to solve the problem This invention solves the above problems.
すなわち、まず悪臭ガスにオゾンを添加しファンのよう
な高速回転撹拌手段で悪臭成分とオゾンを高速で混合し
、気相で効率よく反応させた後、さらにこれらの吸着・
分解性無機系触媒体で残留悪臭成分およびオゾンを吸着
・分解除去し、脱臭するものである。That is, first, ozone is added to malodorous gas, and the malodorous components and ozone are mixed at high speed using a high-speed stirring means such as a fan, and after efficiently reacting in the gas phase, these components are adsorbed and ozone is mixed.
It uses a degradable inorganic catalyst to adsorb and decompose residual malodorous components and ozone, resulting in deodorization.
かくして、この発明によれば、悪臭成分を含有するガス
にオゾンを添加し、これを高速回転撹拌手段によって強
制的に撹拌混合処理し、次いでこの処理ガスを、悪臭成
分及びオゾンの吸着・分解能を有する無機系触媒体に接
触させて残留する悪臭成分及びオゾンを除去することを
特徴とする脱臭方法が提供される。Thus, according to the present invention, ozone is added to a gas containing malodorous components, this is forcibly stirred and mixed by a high-speed rotating stirring means, and then this treated gas is subjected to a treatment that improves the adsorption/decomposition ability of malodorous components and ozone. Provided is a deodorizing method characterized in that residual malodorous components and ozone are removed by contacting with an inorganic catalyst having an odor.
この発明において悪臭成分含有ガス（以下、悪臭ガス）
へ添加するオゾンの量は、悪臭成分の種類によっても異
なるが、通常、含有される悪臭成分の総モル数に対し、
１／１０倍モル〜１００倍モルとするのが適しており、
１７５倍モル〜５０倍モルが好ましく、１７２倍〜２０
倍モルとするのが最も好ましい。この際のオゾンの添加
は、前述のごとくオゾン供給管を悪臭ガス流路へ接続し
て行うことができ、公知のオゾン発生器（たとえば、無
声放電方式、紫外線照射方式、水の電気分解方式）を悪
臭ガス流路内に配設又は接続しこれを駆動して行うこと
ができる。In this invention, gas containing malodorous components (hereinafter referred to as malodorous gas)
The amount of ozone added to the water differs depending on the type of malodorous components, but usually, the amount of ozone added to the total number of moles of malodorous components contained is
It is suitable that the amount is 1/10 times the mole to 100 times the mole.
175 times mole to 50 times mole is preferable, 172 times to 20 times mole
It is most preferable to double the molar amount. Ozone can be added at this time by connecting the ozone supply pipe to the foul-smelling gas flow path as described above, using a known ozone generator (for example, silent discharge method, ultraviolet irradiation method, water electrolysis method). This can be done by disposing or connecting the malodorous gas flow path and driving it.
これらのうちことに、水の電気分解方式のオゾン発生器
からのオゾン供給管を接続して行うことが好ましい。こ
のような水の電解によるオゾンの添加により、放電方式
等によるオゾンを用いた際に生じうる硝酸塩等の副生物
（悪臭成分中のアンモニアガスと放電に伴うＮＯＸ成分
との反応により生じうる）の発生並びにそれによる脱臭
効率の経時的低下、を防止することができる。Among these, it is particularly preferable to connect an ozone supply pipe from an ozone generator using water electrolysis. By adding ozone through water electrolysis, by-products such as nitrates (which can occur due to the reaction between ammonia gas in the malodorous components and NOx components accompanying discharge) that can be generated when ozone is used in a discharge method, etc. can be reduced. It is possible to prevent the generation of odor and the resulting deterioration in deodorizing efficiency over time.
このようにオゾンが添加された悪臭ガスは、次いで高速
回転撹拌手段に導入されて撹拌混合処理に付される。こ
こで高速回転撹拌手段としてはシロッコファンのごとき
通常の送風用ファンを用いるのが撹拌混合処理と共に悪
臭ガスの移送に役立つ点で適しており、また、高速回転
とはファンのインペラ部の回転数として２００回／分以
上を意味し、ことに２００〜１５０００回／分が適して
おり、５００〜１００００回／分が好ましく、１０００
〜７０００回／分とするのが最も好ましい。また、かか
る悪臭ガスの撹拌混合処理は、ガスフロー状態で連続し
て行うのが適しており、この際のオゾン含有悪臭ガスの
供給量は、上記回転撹拌手段のガス空間速度（通過ガス
量／回転撹拌手段内容積）として２０００〜３００００
００ｈｒ−’とするのが適しており、５０００〜１５０
００００ｈｒ−’が好ましく、１００００〜１００ＱＯ
ＯＯｈｒ−’とするのが最も好ましい。また、上記撹拌
混合処理の際のガス温度は一５０℃〜１５０℃の範囲で
選択するのが適しており、−３０’Ｃ〜１００℃が好ま
しく、−１５℃〜７０℃が最も好ましい。The malodorous gas to which ozone has been added in this way is then introduced into a high-speed rotating stirring means and subjected to stirring and mixing treatment. Here, as the high-speed rotation stirring means, it is suitable to use a normal blowing fan such as a sirocco fan because it is useful for stirring and mixing processing as well as for transporting the foul-smelling gas. means 200 times/min or more, particularly suitable is 200 to 15,000 times/min, preferably 500 to 10,000 times/min, and 1000 times/min is particularly suitable.
Most preferably, the speed is 7000 times/min. In addition, it is suitable to carry out the stirring and mixing treatment of the malodorous gas continuously in a gas flow state, and the supply amount of the ozone-containing malodorous gas at this time is determined by the gas hourly velocity of the rotary stirring means (passing gas amount/ 2,000 to 30,000 (inner volume of rotating stirring means)
00hr-' is suitable, and 5000 to 150
0000hr-' is preferable, 10000~100QO
Most preferably, it is OOhr-'. Further, the gas temperature during the stirring and mixing process is suitably selected within the range of -50°C to 150°C, preferably -30'C to 100°C, and most preferably -15°C to 70°C.
かかる撹拌混合処理された処理ガスは、次いで悪臭成分
及びオゾンの吸着分解能を有する無機系触媒体との接触
処理に付される。この触媒体としては、悪臭成分を吸着
したりオゾンの存在下その酸化分解を促進することがで
きる触媒作用を有すると共に、オゾンを吸着して分解で
きる触媒作用を有するものであればよく、とくに限定さ
れない。The treated gas subjected to the stirring and mixing treatment is then subjected to a contact treatment with an inorganic catalyst having the ability to adsorb and decompose malodorous components and ozone. This catalyst may be any material as long as it has a catalytic effect capable of adsorbing malodorous components and promoting its oxidative decomposition in the presence of ozone, as well as a catalytic effect capable of adsorbing and decomposing ozone. Not done.
この具体例としては、例えば、活性炭、アルミナ、シリ
カ、セビオライト、ゼオライト、チタニア、ジルコニア
、マグネシア、鉄酸化物、銅酸化物、マンガン酸化物、
コバルト酸化物などの単独およびこれらの混合物が挙げ
られる。また、これら単独品および混合物にさらにアル
カリ金属化合物、アルカリ土類金属化合物、白金族化合
物などを添加または担持させたものでもよい。なお、こ
の無機系触媒体との接触処理は、粒状の上記無機系触媒
体の充填層や上記繊維状、ハニカム状、多孔板状等のフ
ィルター等の形状の固相除去手段に、前記処理ガスを通
過させることにより行うことができ、フィルターを用い
るのが好ましい。この―これらフィルターは、一種類で
も良いが、対象の悪臭成分によっては、二種類以上のフ
ィルターを適当に組合せて、脱臭効率を向上させること
もできる。二種類以上のフィルターを使用する場合は、
例えば悪臭ガス流の上流側に悪臭成分の吸着性の高い活
性炭、アルミナ、シリカ、セピオライト、ゼオライト、
チタニア、ジルコニアなどの多孔質フィルターを置き、
下流側にオゾンの吸着分解性の高い鉄酸化物、銅酸化物
、マンガン酸化物、コバルト酸化物などの単独または混
合物触媒体及びアルカリ金属化合物、アルカリ土類金属
化合物、白金属化合物などを担持した触媒体のフィルタ
ーを置くことが望ましい。Specific examples include activated carbon, alumina, silica, Seviolite, zeolite, titania, zirconia, magnesia, iron oxide, copper oxide, manganese oxide,
Examples include cobalt oxide alone and mixtures thereof. Further, an alkali metal compound, an alkaline earth metal compound, a platinum group compound, or the like may be further added to or supported on these individual products or mixtures. In addition, in this contact treatment with the inorganic catalyst, the treated gas is applied to a solid phase removal means in the form of a packed bed of the granular inorganic catalyst or a filter in the form of fibers, honeycombs, porous plates, etc. This can be carried out by passing through a filter, and it is preferable to use a filter. One type of these filters may be used, but depending on the target malodor components, two or more types of filters may be appropriately combined to improve deodorizing efficiency. When using two or more types of filters,
For example, activated carbon, alumina, silica, sepiolite, zeolite, etc., which have high adsorption properties for malodorous components, are placed on the upstream side of the malodorous gas flow.
Place a porous filter such as titania or zirconia,
On the downstream side, catalysts such as iron oxides, copper oxides, manganese oxides, cobalt oxides, etc., which have high ozone adsorption and decomposition properties, singly or in combination, and alkali metal compounds, alkaline earth metal compounds, platinum metal compounds, etc. are supported. It is desirable to place a catalytic filter.
この発明の脱臭方法は、悪臭ガスの連続フロー下で行う
のが適しており、ことに、悪臭ガス導入部からガス排出
部へ延設されるガス流路に、オゾン供給管のごとき悪臭
ガスへのオゾン添加手段と、前記したガス撹拌用の高速
回転撹拌手段と、前記したカラムやフィルターのような
悪臭成分及びオゾンの吸着・分解能を有する無機系触媒
体を担持又は充填してなる固相除去手段、をこの順に付
設してなる脱臭装置を用いて行うのが適当である。The deodorizing method of the present invention is suitably carried out under a continuous flow of malodorous gas, and in particular, a gas passage extending from a malodorous gas inlet to a gas discharge part, such as an ozone supply pipe, is connected to a malodorous gas. ozone addition means, the above-mentioned high-speed rotation stirring means for stirring the gas, and a solid phase removal method comprising supporting or filling an inorganic catalyst having the ability to adsorb and decompose odor components and ozone, such as the above-mentioned columns and filters. It is appropriate to carry out the deodorization using a deodorizing device equipped with the following steps in this order.
なお、この発明の脱臭方法において、撹拌混合処理後の
処理ガスを上記無機系触媒体へ接触させる府に、この処
理ガスを水又は過酸化水素水に接触させて処理するのが
一つの好ましい態様である。In the deodorizing method of the present invention, one preferable embodiment is to contact the treated gas with water or a hydrogen peroxide solution before contacting the treated gas after the stirring and mixing treatment with the inorganic catalyst. It is.
かかる態様によれば、オゾンで酸化されにくい水溶性の
悪臭成分例えば、アンモニア等を効率良く除去すること
ができると共に、オゾンによる酸化作用も相乗的に向上
でき、脱臭効率を向上させる点でより好ましいからであ
る。従って、前記した脱臭装置を用いる場合には、回転
撹拌手段と固相除去手段との間のガス流路に水又は過酸
化水素水、好ましくは過酸化水素水を貯留してなる悪臭
成分の液相除去手段を介設構成するのが望ましい。なお
、この際用いる過酸化水素水中のＨｔｏｔａ度は、１０
ｐｐｍ以上が適しており、好ましくは５０〜５００００
ｐｐｌ、より好ましくは１００〜１１００００ｐｐであ
る。According to this aspect, water-soluble malodorous components that are difficult to be oxidized by ozone, such as ammonia, can be efficiently removed, and the oxidation effect by ozone can also be synergistically improved, which is more preferable in terms of improving deodorizing efficiency. It is from. Therefore, when using the above-mentioned deodorizing device, a malodorous liquid containing water or hydrogen peroxide solution, preferably hydrogen peroxide solution, is stored in the gas flow path between the rotary stirring means and the solid phase removal means. Preferably, phase removal means are provided. In addition, the degree of Htota in the hydrogen peroxide solution used at this time is 10
ppm or more is suitable, preferably 50 to 50,000
ppl, more preferably 100 to 110,000 ppl.
（ホ）作用
オゾンは、一般に強い酸化力があり、脱臭、殺菌、脱色
、鮮度保持などの広範囲の作用を示す。(e) Function Ozone generally has strong oxidizing power and exhibits a wide range of functions such as deodorization, sterilization, bleaching, and preserving freshness.
この発明でのオゾンの作用は気相下、液相下、および無
機系触媒体表面において悪臭成分を酸化し、脱臭するこ
とにある。The function of ozone in this invention is to oxidize and deodorize malodorous components in the gas phase, liquid phase, and on the surface of the inorganic catalyst.
オゾンによる主要悪臭成分の酸化反応を示すと以下のよ
うになると考えられる。The oxidation reaction of major malodorous components by ozone is thought to be as follows.
Ｈａｓ−３，ＣＨｓＳＨ−４−ＣＨｓＳＯ５ＣＨｓ。Has-3, CHsSH-4-CHsSO5CHs.
シロッコファン３と、悪臭成分とオゾンの吸着・ＣＨ３
ＳＣＨ３→ＣＨ，ＳＣＨ３，ＣＨｊＳＳＣＨ，→ＣＨ＊
５Ｏ３ＣＨｓ（ＣＨｓ）Ｊ−ＣＨａＮＯｔ、 ＮＨｓ
＝Ｎ）Ｉ４ＮＯｓこの発明においては、オゾンが添加さ
れた悪臭ガスが特定の強制撹拌混合処理に付されるため
、上記酸化反応が気相下において高効率に行われ、従来
法や従来装置に比してその脱臭効率が著しく向上される
ことになる。そして、未反応オゾンは無機系触媒体表面
で酸素に分解され（Ｏｓ＝ Ｏｔ ）、残存しうる悪臭
成分ら無機系触媒体に吸着又はその作用によってオゾン
酸化されて除去されることとなる。Sirocco Fan 3 and adsorption of malodorous components and ozone/CH3
SCH3→CH, SCH3, CHjSSCH, →CH*
5O3CHs(CHs)J-CHaNOt, NHs
=N) I4NOs In this invention, the malodorous gas to which ozone has been added is subjected to a specific forced stirring mixing treatment, so the above oxidation reaction is carried out with high efficiency in the gas phase, compared to conventional methods and devices. As a result, the deodorizing efficiency is significantly improved. Then, unreacted ozone is decomposed into oxygen on the surface of the inorganic catalyst (Os=Ot), and any odor components that may remain are adsorbed to the inorganic catalyst or oxidized by ozone by the action of the inorganic catalyst and removed.
（へ）実施例
第１図は、この発明の脱臭方法を実施する脱臭装置の一
実施例を示す構成説明図である。図に示すごとく、脱臭
装置Ａは、ガス導入口で構成された悪臭ガス導入部から
ガス排出部６まで延設されるガス導入部１に、水電解式
オゾン発生器２からオゾンを導入部ｉ内に導入するオゾ
ン供給管７と、分解能を有する無機系触媒体からなる悪
臭成分及びオゾンの固相除去手段４をこの順に付設して
なる。(F) Embodiment FIG. 1 is an explanatory diagram showing the construction of an embodiment of a deodorizing apparatus for carrying out the deodorizing method of the present invention. As shown in the figure, the deodorizing device A introduces ozone from a water electrolysis type ozone generator 2 into a gas introduction part 1 that extends from a malodorous gas introduction part constituted by a gas inlet to a gas discharge part 6. An ozone supply pipe 7 to be introduced into the ozone tank and a solid phase removal means 4 for ozone and malodor components made of an inorganic catalyst having a decomposition ability are attached in this order.
一方、第２図は、同じく他の実施例を示すものであり、
第１図の脱臭装置Ａにおけるシロッコファン３と固相除
去手段４との間に、水を貯留した悪臭成分の液相除去手
段５を介設してなる脱臭装置Ｂを示すものである。On the other hand, FIG. 2 similarly shows another embodiment,
This figure shows a deodorizing apparatus B in which a liquid phase removing means 5 for malodorous components, which stores water, is interposed between the sirocco fan 3 and the solid phase removing means 4 in the deodorizing apparatus A shown in FIG.
かかる脱臭装置を用いて、この発明の方法を実施した例
について、以下説明する。An example of implementing the method of the present invention using such a deodorizing device will be described below.
実施例１
第１図の脱臭装置Ａを用い、このガス流路に、Ｈａｓ
０．３ｐｐｍｓ ＣＨ３ＳＨ０，ｌｐｐｍ５ （ｃｕ
３）ｔｓ ｏ、ｔｌ）ｐＨ１（ＣＨｓ）ｔｓｔ Ｏ
，ｌｐｐｍ５ ＮＨｓ Ｏ，５ｐｐｆｆｌＳＣＨｓＮ
ＨｔＯ，２ｐｐＨ，ＨＣＨＯｔ、ｏｐｐ＋＊を含有する
大気（温度２５℃。Example 1 Using the deodorizing device A shown in Fig. 1, Has
0.3ppms CH3SH0, lppm5 (cu
3) ts o, tl) pH1 (CHs) tst O
,lppm5NHsO,5ppfflSCHsN
Atmosphere containing HtO, 2ppH, HCHOt, opp+* (temperature 25°C).
相対湿度６０％）を導入すると共に、水電解式オゾン発
生器からオゾン供給管７を通じてオゾンを６ｐｐ−添加
し、このガス１８Ｏｆｆ／ｗｉｎをシロッコファン３に
導き、インペラ部で高速混合（回転数１８００回／分、
空間速度３ｇｏｏｏｈｒ−’） した後、１０４．５Ｊ
ｕＸ ７２ｘｚ×３６．５ｘｘＤの活性炭ハニカム（セ
ル数４５０個／ｆ”）からなる固相除去手段４に流通し
た。このテストを５時間続けた結果、ＮＨ，がＯ，ｌｐ
ｐｍ、ＣＨＪＨ，が０．０１ｐｐｍＳＨＣＨＯが０ 、
５ｐｐｍがリークしたが、他の成分はＯ，ＯＯ１ｐｐｍ
以下で臭気は感じられなかった。At the same time, 6pp of ozone is added from a water electrolysis type ozone generator through the ozone supply pipe 7, and this gas 18Off/win is introduced to the sirocco fan 3, where it is mixed at high speed in the impeller (rotation speed 180%). times/minute,
After space velocity 3gooohr-'), 104.5J
u
pm, CHJH, is 0.01ppmSHCHO is 0,
5ppm leaked, but other components were O, OO1ppm
No odor was detected below.
実施例２
第２図の脱臭装置Ｂを用い、実施例１と同様にオゾンを
添加した悪臭ガス（１８０１２／ｍ１ｎ）をシロッコフ
ァン３に導き、インペラ部で実施例１と同様に高速混合
した後、Ｎｏ、ｌガラス繊維フィルター付きの水発生ビ
ン（水を水深５０ｍｍ入れたもの）からなる液相除去手
段５に通し、さらに１０４゜５ｚ＊Ｘ７２ｘｚＸ ３６
．５ｘｘＤの活性炭ハニカムからなる固相除去手段４に
流通した。このテストを５時間続けた結果、Ｎ Ｈ３が
Ｏ，Ｏ５ｐｐｍ、 ＣＨ３ＮＨ２が０．００２ｐｐｍ、
ＨＣＨＯがａ、４ｐｐｒｎがリークしたが、他の成分
は０．００１ｐｐｍ以下で臭気は感じられなかった。Example 2 Using the deodorizing device B shown in Fig. 2, malodorous gas (18012/ml) to which ozone was added in the same manner as in Example 1 was introduced into the sirocco fan 3, and mixed at high speed in the impeller section in the same manner as in Example 1. , No. 1, passed through the liquid phase removal means 5 consisting of a water generation bottle (water filled to a depth of 50 mm) with a glass fiber filter, and further passed through the liquid phase removal means 5 (104゜5z*X72xzX 36
．． It passed through a solid phase removal means 4 consisting of a 5xxD activated carbon honeycomb. As a result of continuing this test for 5 hours, NH3 was O, O5 ppm, CH3NH2 was 0.002 ppm,
Although a and 4 pprn of HCHO leaked, the amount of other components was 0.001 ppm or less and no odor was detected.
実施例３
実施例２において、水発生ビンの水の代すニＨ！Ｏ＊
５００ｐｐｏ＋を含有する水を使用し、実施例２と同
様なテストを５時間続けた結果、ＮＨ，が０．０３ｐｐ
＋ｍ、 ＨＣＨＯが０．０９ｐｐｍがリークしたが他の
成分１；１．００１＋）Ｐａ以下で、臭気は感じられな
かった。Example 3 In Example 2, the water in the water generating bottle is replaced by 2H! O*
Using water containing 500ppo+, the same test as in Example 2 was continued for 5 hours, and as a result, NH, was 0.03pp.
+m, 0.09 ppm of HCHO leaked, but the other components were less than 1;1.001+)Pa, and no odor was detected.
比較例
第１図の脱臭装置Ａにおけるシロッコファン３を、固相
除去手段４の後段に設置した装置を用い、実施例１と同
様ニＨ＊ｓ ０．３ｐｐｍ、 ＣＨ３５）Ｉ ０．
ｌｐｐｍ。Comparative Example Using a device in which the sirocco fan 3 in the deodorizing device A shown in FIG.
lppm.
（ＣＨ３）ｔｓ Ｏ，１１１１ｐｍ、 （ＣＨａ）＊
Ｓｔ Ｏ，ｌｐｐｍ、 ＮＨ２Ｏ，５ｐｐｍ、 ＣＨ
ＪＨ＊ ０．２ｐｐｍ、ＨＣＨＯ１，ｏｐｐｍを含有
する大気（温度２５℃、相対湿度６０％）にオゾンを６
ｐｐｍ添加し、このガス１８０１２／ｗｉｎを１０４．
５ａｕ＋Ｘ ７２ｚｘｘ３６．５ｘｘＤの活性炭ハニカ
ム（セル数４５０個／ｉｎ”）に流通した。このテスト
を５時間続けた結果、）（ｔｓカ０．００９ｐｐｍ、Ｃ
ＨｓＳＨｈ＜０ 、００４ｐｐｍ、（ｃｕｓ）ｔｓが０
、Ｏ３ｐｐｍ、 （ＣＨ３）Ｉ５が０．０１ｐｐｍＳＮ
Ｈ３が０．２５ｐ＋）ｍ。(CH3)ts O, 1111pm, (CHa)*
StO, lppm, NH2O, 5ppm, CH
JH* 6 ozone was added to the atmosphere (temperature 25°C, relative humidity 60%) containing 0.2 ppm, HCHO 1, oppm.
ppm added and this gas 18012/win was 104.
5au+X 72zxx36.5xxD activated carbon honeycomb (450 cells/in'')
HsSHh<0, 004ppm, (cus)ts is 0
, O3ppm, (CH3)I5 is 0.01ppmSN
H3 is 0.25p+)m.
ＣＨ−ＮＨｍが０．０６ｐｐｍ、ＨＣＨＯが０．８ｐｐ
ｍリークし、著しい臭気が感じられた。CH-NHm is 0.06ppm, HCHO is 0.8ppm
There was a leak and a strong odor was felt.
実施例４
８ｍ３の密室にＨ，Ｓ ０．７ｐｐｍ、 ＣＨ３３Ｈ
０，Ｏ３ｐｐｍ。Example 4 H, S 0.7 ppm, CH33H in a closed room of 8 m3
0.03ppm.
（ＣＨｓ）ｔＳ ０．８ｐｐｍ、 （ＣＨａ）＊Ｓ
＊ ０．４ｐｐｍＳＮＨｓ ９．２ｐｐｍ、 （Ｃ
Ｈ３）Ｊ ０．２ｐｐｍ％ＣＨ３ＣＨＯ１，４ｐｐｍ
、スチレン ４．３ｐｐｍを封じ込め、この密室に、３
００ｚ９／Ｈの水電解式オゾン発生器及び１ ｍ３／ｍ
ｉｎのシロッコファン、１２０ｘｘφＸ １０１λＤセ
ピオライトハニカム（セル数４５０個／ｉｎ”） 、１
２０ｘｘφＸ ３５ａｕｌ）活性炭ハニカム（セル数４
５０個／ｉｎ”）からなる固相除去手段を装着した脱臭
流路を設置した。(CHs)tS 0.8ppm, (CHa)*S
*0.4ppmSNHs 9.2ppm, (C
H3) J 0.2ppm%CH3CHO1.4ppm
, 4.3 ppm of styrene is contained in this closed room, 3
00z9/H water electrolysis ozone generator and 1 m3/m
in sirocco fan, 120xxφX 101λD sepiolite honeycomb (450 cells/in"), 1
20xxφX 35aul) activated carbon honeycomb (number of cells 4
A deodorizing channel equipped with solid phase removal means consisting of 50 pieces/in'' was installed.
なお、室内空気のシロッコファン吸引側に発生オゾンを
導入し、ファンのインペラで悪臭成分とオゾンを高速で
混合しく回転数４０００回／分、空間速度４０００００
ｈｒ−’）、気相で反応させた後、セピオライトハニカ
ム→活性炭ハニカムの順にガスを流通し、脱臭テストを
行った結果、脱臭様運転３時間後には、室内の臭気が感
じられず、効率良く脱臭を行うことができた。In addition, generated ozone is introduced into the indoor air suction side of the sirocco fan, and the fan's impeller mixes odor components and ozone at high speed at a rotation speed of 4000 times/min and a space velocity of 400,000.
After reacting in the gas phase, we conducted a deodorization test by circulating gas in the order of sepiolite honeycomb → activated carbon honeycomb. As a result, after 3 hours of deodorization-like operation, no odor was felt in the room, and the process was efficient. I was able to deodorize.
実施例５
実施例４の面相除去手段の代わりに１２０ｘｘφＸ１０
ｘｘＤ活性炭ハニカム（セル数４５０個／ｉｎ”）と１
２０１１ＲφＸ ｌ０ＪＩＩＩ！Ｄの酸（）［−酸化マ
ンガンハニカム（セル数４５０個／ｉｎりをこの順に使
用し、テストを行った。脱臭様運転後３時間後に若干の
臭気が残ったが５時間後には臭気が感じられなくなった
。Example 5 120xxφX10 instead of the face removal means of Example 4
xxD activated carbon honeycomb (450 cells/in”) and 1
2011RφX l0JIII! Tests were conducted using acid D ()[-manganese oxide honeycomb (450 cells/in. I can no longer do it.
実施例６
第３図はこの発明の一実施例の冷蔵庫内蔵用の脱臭装置
８を示す構成説明図である。図において脱臭装置８は、
両端開放の断面矩形状の筒体１５内に、オゾン発生器２
からのオゾン供給管７と、プロペラ式吸引ファン１２と
、活性炭ハニカムからなるフィルター状の固相除去手段
１３を配設し、ファン１２駆動により、ガス人口９から
ガス出口ｌＯの方向へ外気が連続して流通するガス流路
１４が設定されるように構成されている。なお、１６は
、除塵用のフィルタである。また１１はガス流路中央付
近に位置するオゾン導入口である。Embodiment 6 FIG. 3 is a configuration explanatory diagram showing a deodorizing device 8 for built-in a refrigerator according to an embodiment of the present invention. In the figure, the deodorizing device 8 is
An ozone generator 2 is placed inside a cylinder 15 having a rectangular cross section with both ends open.
An ozone supply pipe 7, a propeller-type suction fan 12, and a filter-like solid phase removal means 13 made of activated carbon honeycomb are installed, and by driving the fan 12, outside air is continuously drawn from the gas port 9 to the gas outlet lO. The gas flow path 14 is configured such that the gas flow path 14 is configured so that the gas flows through the gas flow path 14. Note that 16 is a filter for removing dust. Further, 11 is an ozone inlet located near the center of the gas flow path.
かかる脱臭装置８は、冷蔵庫に内蔵する脱臭ユニットと
して有用なものである。Such a deodorizing device 8 is useful as a deodorizing unit built into a refrigerator.
（ト）発明の効果
この発明に脱臭方法及び脱臭装置によれば、従来法及び
従来装置に比して、悪臭ガスの脱臭効率を著しく向上す
ることができる。(G) Effects of the Invention According to the deodorizing method and deodorizing device of the present invention, the deodorizing efficiency of malodorous gas can be significantly improved compared to conventional methods and devices.
第１図は、第２図及び第３図は、各々この発明の脱臭方
法を実施する脱臭装置を例示する構成説明図である。
１・・・・・・ガス導入部、２・・・・・・オゾン発生
器、３・・・・・・シロッコファン、
４．１３・・・・・・固相除去手段、
５・・・・・・液相除去手段、６・・・・・・ガス排出
部、７・・・・・・オゾン供給管、８・・・・・・脱臭
装置、９・・・・・・ガス入口、 ｌＯ・・・・・
・ガス出口、１１・・・・・・オゾン導入口、
１２・・・・・・プロペラ式吸引ファン、１４・・・・
・・ガス流路FIG. 1, FIG. 2, and FIG. 3 are configuration explanatory diagrams each illustrating a deodorizing apparatus that implements the deodorizing method of the present invention. 1...Gas introduction part, 2...Ozone generator, 3...Sirocco fan, 4.13...Solid phase removal means, 5... ... Liquid phase removal means, 6 ... Gas discharge section, 7 ... Ozone supply pipe, 8 ... Deodorizing device, 9 ... Gas inlet, lO...
・Gas outlet, 11...Ozone inlet, 12...Propeller type suction fan, 14...
・・Gas flow path
Claims (1)
を添加し、これを高速回転撹拌手段によって強制的に撹
拌混合処理し、次いでこの処理ガスを、悪臭成分及びオ
ゾンの吸着・分解能を有する無機系触媒体に接触させて
残留する悪臭成分及びオゾンを除去することを特徴とす
る脱臭方法。 ２、悪臭成分を含有するガスにオゾンを添加し、これを
高速回転撹拌手段によって強制的に撹拌混合処理した後
、水または過酸化水素水と接触処理し、次いで、この処
理ガスを悪臭成分及びオゾンの吸着・分解能を有する無
機系触媒体に接触させて残留する悪臭成分及びオゾンを
除去することを特徴とする脱臭方法。 ３、悪臭成分を含有するガスの導入部からガス排出部へ
延設されるガス流路に、水電解で得られるオゾンのガス
への添加手段と、ガス撹拌用の高速回転撹拌手段と、悪
臭成分及びオゾンの吸着・分解能を有する無機系触媒体
の固相除去手段をこの順に付設してなる脱臭装置。 ４、悪臭成分を含有するガスの導入部からガス排出部へ
延設されるガス流路に、オゾンのガスへの添加手段と、
ガス撹拌用の高速回転撹拌手段と、水又は過酸化水素水
を貯留してなる液相除去手段と、悪臭成分及びオゾンの
吸着・分解能を有する無機触媒体の固相除去手段をこの
順に付設してなる脱臭装置。[Claims] 1. Ozone obtained by water electrolysis is added to a gas containing malodorous components, and this is forcibly stirred and mixed by a high-speed rotation stirring means, and then this treated gas is mixed with malodorous components and ozone. A deodorizing method characterized by removing residual malodorous components and ozone by bringing them into contact with an inorganic catalyst having adsorption and decomposition abilities. 2. Ozone is added to a gas containing malodorous components, and this is forcibly stirred and mixed using a high-speed rotation stirring means, and then contacted with water or hydrogen peroxide, and then this treated gas is mixed with malodorous components. A deodorizing method characterized by removing residual malodorous components and ozone by bringing them into contact with an inorganic catalyst having the ability to adsorb and decompose ozone. 3. In the gas flow path extending from the gas introduction part containing the malodorous component to the gas discharge part, there is a means for adding ozone obtained by water electrolysis to the gas, a high-speed rotation stirring means for stirring the gas, and a gas flow path extending from the gas introduction part containing the malodorous component to the gas discharge part. A deodorizing device equipped with a solid phase removal means of an inorganic catalyst having the ability to adsorb and decompose components and ozone in this order. 4. A means for adding ozone to the gas in a gas flow path extending from the introduction part of the gas containing malodorous components to the gas discharge part;
A high-speed rotation stirring means for gas stirring, a liquid phase removing means formed by storing water or hydrogen peroxide solution, and a solid phase removing means comprising an inorganic catalyst having the ability to adsorb and decompose odor components and ozone are attached in this order. A deodorizing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1298134A JP2888565B2 (en) | 1988-12-23 | 1989-11-15 | Deodorizing method and deodorizing device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32725288 | 1988-12-23 | ||
| JP63-327252 | 1988-12-23 | ||
| JP1298134A JP2888565B2 (en) | 1988-12-23 | 1989-11-15 | Deodorizing method and deodorizing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02258015A true JPH02258015A (en) | 1990-10-18 |
| JP2888565B2 JP2888565B2 (en) | 1999-05-10 |
Family
ID=26561391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1298134A Expired - Fee Related JP2888565B2 (en) | 1988-12-23 | 1989-11-15 | Deodorizing method and deodorizing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2888565B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5433854A (en) * | 1994-03-16 | 1995-07-18 | Dickerson; J. Rodney | Method for preventing erosion in waste water lift stations and treatment facilities |
| US5527465A (en) * | 1994-03-16 | 1996-06-18 | Dickerson; J. Rodney | Method for preventing erosion in headworks of waste water treatment facilities |
| EP1304154A1 (en) * | 2001-09-27 | 2003-04-23 | Jürgen Markert | Process and apparatus for the purification of exhaust gas |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101450061B1 (en) | 2014-06-13 | 2014-10-13 | 주식회사 기술환경 | Voc oxidation treatment apparatus |
-
1989
- 1989-11-15 JP JP1298134A patent/JP2888565B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5433854A (en) * | 1994-03-16 | 1995-07-18 | Dickerson; J. Rodney | Method for preventing erosion in waste water lift stations and treatment facilities |
| US5527465A (en) * | 1994-03-16 | 1996-06-18 | Dickerson; J. Rodney | Method for preventing erosion in headworks of waste water treatment facilities |
| EP1304154A1 (en) * | 2001-09-27 | 2003-04-23 | Jürgen Markert | Process and apparatus for the purification of exhaust gas |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2888565B2 (en) | 1999-05-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |