JP2002079275A - Water cleaning device - Google Patents
Water cleaning deviceInfo
- Publication number
- JP2002079275A JP2002079275A JP2000272804A JP2000272804A JP2002079275A JP 2002079275 A JP2002079275 A JP 2002079275A JP 2000272804 A JP2000272804 A JP 2000272804A JP 2000272804 A JP2000272804 A JP 2000272804A JP 2002079275 A JP2002079275 A JP 2002079275A
- Authority
- JP
- Japan
- Prior art keywords
- water
- harmful substances
- ozone
- water purification
- adsorbent
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 238000004140 cleaning Methods 0.000 title abstract 3
- 238000001179 sorption measurement Methods 0.000 claims abstract description 12
- 239000000126 substance Substances 0.000 claims description 51
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 30
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 27
- 238000000746 purification Methods 0.000 claims description 19
- 239000003463 adsorbent Substances 0.000 claims description 17
- 238000000354 decomposition reaction Methods 0.000 claims description 13
- 239000011941 photocatalyst Substances 0.000 claims description 8
- 238000006864 oxidative decomposition reaction Methods 0.000 claims description 6
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 claims description 5
- 231100000614 poison Toxicity 0.000 abstract 5
- 239000003440 toxic substance Substances 0.000 abstract 5
- 230000002265 prevention Effects 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 32
- NIQCNGHVCWTJSM-UHFFFAOYSA-N Dimethyl phthalate Chemical compound COC(=O)C1=CC=CC=C1C(=O)OC NIQCNGHVCWTJSM-UHFFFAOYSA-N 0.000 description 26
- FBSAITBEAPNWJG-UHFFFAOYSA-N dimethyl phthalate Natural products CC(=O)OC1=CC=CC=C1OC(C)=O FBSAITBEAPNWJG-UHFFFAOYSA-N 0.000 description 13
- 229960001826 dimethylphthalate Drugs 0.000 description 13
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 11
- 238000007254 oxidation reaction Methods 0.000 description 10
- 230000003647 oxidation Effects 0.000 description 7
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 229910021536 Zeolite Inorganic materials 0.000 description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 3
- 239000010457 zeolite Substances 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 125000004430 oxygen atom Chemical group O* 0.000 description 2
- 238000005949 ozonolysis reaction Methods 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 239000012488 sample solution Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 102100032566 Carbonic anhydrase-related protein 10 Human genes 0.000 description 1
- 102100033029 Carbonic anhydrase-related protein 11 Human genes 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 101000867836 Homo sapiens Carbonic anhydrase-related protein 10 Proteins 0.000 description 1
- 101000867841 Homo sapiens Carbonic anhydrase-related protein 11 Proteins 0.000 description 1
- 101001075218 Homo sapiens Gastrokine-1 Proteins 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012510 hollow fiber Substances 0.000 description 1
- 229940088597 hormone Drugs 0.000 description 1
- 239000005556 hormone Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 125000005498 phthalate group Chemical class 0.000 description 1
- 208000011117 substance-related disease Diseases 0.000 description 1
Landscapes
- Physical Water Treatments (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Water Treatment By Sorption (AREA)
- Catalysts (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、吸着材を使用した
水の浄化に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to water purification using an adsorbent.
【０００２】[0002]
【従来の技術】家庭用浄水器として普及しているもの
は、活性炭及び中空糸膜等のろ過膜を組み合わせたカー
トリッジを有するものが主流である。活性炭により水中
残留塩素及び発ガン性の懸念されるトリハロメタン、農
薬等の有害物質を吸着除去しており、定期的に交換して
いる。2. Description of the Related Art The mainstream of water purifiers for household use is one having a cartridge in which activated carbon and a filtration membrane such as a hollow fiber membrane are combined. Activated carbon removes residual chlorine in water and harmful substances such as trihalomethane and pesticides, which are carcinogenic, and is regularly replaced.
【０００３】[0003]
【発明が解決しようとする課題】吸着作用を利用した活
性炭による浄水では、通水量の増加に伴い吸着能力が徐
々に低下し、吸着許容量を超えると破過による再溶出が
起こる等の問題を有している。また、フタル酸エステル
類のような環境ホルモンは水中では非常に低濃度（ppb
オーダー）であるが、活性炭に吸着されて濃縮されるた
め、使用済みのカートリッジの処理が問題となる。In the case of water purification using activated carbon utilizing the adsorption action, the adsorbing capacity gradually decreases with an increase in the amount of water passing, and when the amount exceeds the permissible adsorption amount, re-elution due to breakthrough occurs. Have. Environmental hormones such as phthalates are very low in water (ppb
However, since it is adsorbed on activated carbon and concentrated, the treatment of used cartridges becomes a problem.
【０００４】また、有害物質を分解するような浄水装置
は、吸着作用を利用した活性炭による浄水に比べて処理
速度が遅く、バッチ処理が必要であり、連続的な処理は
難しかった。[0004] Further, a water purification apparatus that decomposes harmful substances has a slower processing speed than that of water purification using activated carbon utilizing an adsorption action, requires batch processing, and is difficult to perform continuous processing.
【０００５】本発明は、上記従来の問題点を解決するも
ので、吸着材により水中の有害物質を連続的に処理し、
分解手段により吸着材に吸着した有害物質を分解するこ
とにより、水中からの有害物質の除去だけでなく、効率
良く有害物質を酸化分解して無害化することを目標とす
る。The present invention solves the above-mentioned conventional problems, and continuously treats harmful substances in water with an adsorbent.
By decomposing the harmful substance adsorbed on the adsorbent by the decomposition means, the purpose is not only to remove the harmful substance from the water, but also to oxidize and decompose the harmful substance efficiently to make it harmless.
【０００６】[0006]
【課題を解決するための手段】前記目標を達成するため
に本発明は、水中の有害物質を連続的に吸着除去する吸
着部と、吸着部に吸着された有害物質を酸化分解する手
段を有し、水中の有害物質を無害化することを可能とし
ている。In order to achieve the above object, the present invention comprises an adsorbing section for continuously adsorbing and removing harmful substances in water, and a means for oxidizing and decomposing harmful substances adsorbed on the adsorbing section. This makes it possible to detoxify harmful substances in water.
【０００７】[0007]
【発明の実施の形態】本発明の請求項１記載の発明は、
吸着材により水中の有害物質を除去する吸着部と、吸着
部に吸着された有害物質を酸化分解する手段を有し、水
中の有害物資を分解し無害化することができる浄水装置
である。この構成により、水中の有害物質を吸着材に吸
着させることで除去し、吸着材に吸着した有害物質を酸
化分解して無害化しており、連続的な除去と、有害物質
を環境中に再放出しないことを併せて可能とする。BEST MODE FOR CARRYING OUT THE INVENTION
The water purification device has an adsorbing section for removing harmful substances in water by an adsorbent, and means for oxidatively decomposing harmful substances adsorbed on the adsorbing section, and can decompose and detoxify harmful substances in water. With this configuration, harmful substances in water are removed by adsorbing them onto the adsorbent, and the harmful substances adsorbed on the adsorbent are oxidized and decomposed to make them harmless. It is also possible to do not.
【０００８】本発明の請求項２記載の発明は、吸着剤に
よる有害物質の吸着と、吸着部に吸着された有害物質の
酸化分解が同じ容器内で行われることを特徴とする請求
項１記載の浄水装置であり、この構成により、有害物質
の吸着除去と有害物質の酸化分解を並行して行うことが
できる。[0008] The invention according to claim 2 of the present invention is characterized in that the adsorption of the harmful substance by the adsorbent and the oxidative decomposition of the harmful substance adsorbed by the adsorption section are performed in the same container. With this configuration, it is possible to perform adsorption removal of harmful substances and oxidative decomposition of harmful substances in parallel.
【０００９】本発明の請求項３記載の発明は、有害物質
をオゾンを用いて分解することを特徴とする請求項１ま
たは２記載の浄水装置であり、オゾンは比較的簡単に生
成でき、また高濃度で発生するので、有害物質を効率良
く酸化分解できるのである。According to a third aspect of the present invention, there is provided the water purification apparatus according to the first or second aspect, wherein the harmful substance is decomposed by using ozone. Since it is generated at a high concentration, harmful substances can be efficiently oxidized and decomposed.
【００１０】本発明の請求項４記載の発明は、有害物質
の分解が、オゾンと、紫外線または過酸化水素の少なく
とも一つを併用することを特徴とする請求項３記載の浄
水装置である。オゾンは、紫外線、過酸化水素の存在下
でドロキシルラジカルに変化する。ヒドロキシルラジカ
ルによる酸化はオゾン酸化に比べて反応速度が速く、オ
ゾン酸化が0.1〜103オーダーであるのに対して、107〜1
09オーダーである。よって、高濃度で反応するオゾン酸
化と反応速度が速いヒドロキシルラジカルによる酸化を
併用することで、効率良く有害物質を分解できる。ま
た、オゾンと複数の手段を併用することで、連鎖反応に
よりさらに酸化反応を促進することができる。例えば、
紫外線と過酸化水素を併用した系では、過酸化水素によ
りオゾンがヒドロキシルラジカルへ変化し、紫外線によ
り過酸化水素もヒドロキシルラジカルへ変化する等の複
雑な連鎖反応が起こり、酸化反応が促進さる。According to a fourth aspect of the present invention, there is provided the water purification apparatus according to the third aspect, wherein the decomposition of the harmful substance uses ozone and at least one of ultraviolet light and hydrogen peroxide. Ozone changes into droxyl radicals in the presence of ultraviolet light and hydrogen peroxide. Oxidation with hydroxyl radicals has a higher reaction rate than ozone oxidation, whereas ozone oxidation is on the order of 0.1 to 10 3 , whereas 10 7 to 1
0 9 order. Therefore, harmful substances can be efficiently decomposed by using both the ozone oxidation which reacts at a high concentration and the oxidation by the hydroxyl radical having a high reaction rate. In addition, by using ozone and a plurality of means in combination, an oxidation reaction can be further promoted by a chain reaction. For example,
In a system in which ultraviolet light and hydrogen peroxide are used in combination, a complicated chain reaction occurs such that ozone is changed to hydroxyl radical by hydrogen peroxide, and hydrogen peroxide is also changed to hydroxyl radical by ultraviolet light, and the oxidation reaction is accelerated.
【００１１】本発明の請求項５記載の発明は、有害物質
の分解が、紫外線または、紫外線と過酸化水素、紫外線
と次亜塩素酸のいずれかによることを特徴とする請求項
１記載の浄水装置である。Ｃ−Ｈ結合の結合エネルギー
は約100kcal／molであり、約287nmより低波長側の紫外
線によれば約100kcal／mol以上のエネルギーを得ること
ができ、Ｃ−Ｈ結合を切断することができるのである。The invention according to claim 5 of the present invention is characterized in that the decomposition of harmful substances is carried out by one of ultraviolet rays, ultraviolet rays and hydrogen peroxide, and ultraviolet rays and hypochlorous acid. Device. The bond energy of the C—H bond is about 100 kcal / mol, and the energy of about 100 kcal / mol or more can be obtained by ultraviolet light having a wavelength lower than about 287 nm, and the C—H bond can be cut. is there.
【００１２】本発明の請求項６記載の発明は、吸着材が
光触媒を有することを特徴とする請求項１〜５いずれか
１項に記載の浄水装置であり、この構成により吸着材に
吸着した有害物質を光触媒表面で発生したヒドロキシル
ラジカルによって酸化分解することができる。また、ヒ
ドロキシルラジカルが光触媒表面に結合したまま反応に
関与するので反応物へ酸素原子が移行して反応副生成物
として酸化物が生じるのを防ぐことが出来る。According to a sixth aspect of the present invention, there is provided the water purification apparatus according to any one of the first to fifth aspects, wherein the adsorbent has a photocatalyst. Harmful substances can be oxidatively decomposed by hydroxyl radicals generated on the photocatalytic surface. Further, since the hydroxyl radical participates in the reaction while being bonded to the photocatalyst surface, it is possible to prevent the transfer of oxygen atoms to the reactant and the formation of an oxide as a reaction by-product.
【００１３】[0013]
【実施例】以下本発明の一実施例について、図面を参照
しながら説明する。浄水装置の一実施例について図１を
用いて説明する。An embodiment of the present invention will be described below with reference to the drawings. One embodiment of the water purification device will be described with reference to FIG.
【００１４】吸着剤１は容器２内に設けられており、前
記容器２内には紫外線灯３が設けられている。４はオゾ
ン発生装置で発生したオゾンはオゾン供給経路５を通過
して容器２内に供給される。６の容器内には過酸化水素
溶液または次亜塩素酸溶液７を有しており、８の薬液供
給経路を通過して容器２内に供給される。The adsorbent 1 is provided in a container 2, and an ultraviolet lamp 3 is provided in the container 2. Reference numeral 4 denotes ozone generated by the ozone generator, which is supplied into the container 2 through an ozone supply path 5. The container 6 has a hydrogen peroxide solution or a hypochlorous acid solution 7 and is supplied into the container 2 through the chemical solution supply path 8.
【００１５】処理水は、流入口９より容器２に入り吸着
剤１により有害物質を吸着除去され、流出口１０より出
る。吸着剤１に吸着された有害物質は、オゾン発生装置
４で発生したオゾンにより、酸化分解される。また、オ
ゾンの供給、紫外線灯の点灯、過酸化水素または次亜塩
素酸の供給は、同時に行っても良いし、逐次的に行って
も良い。逐次的に行う際には、まずオゾンを供給して、
オゾンによる酸化分解をした後に、紫外線照射や薬液の
供給を行い、ヒドロキシルラジカルによる酸化を行うと
良い。オゾンはヒドロキシルラジカルよりも高濃度で生
成でき、有害物質との反応の選択性が高いため、まずオ
ゾンと反応して分解できる有害物質を分解しておき、残
ったオゾンが変化して生成したヒドロキシルラジカル、
または過酸化水素等に起因するヒドロキシルラジカル
で、残存した有害物質を分解し、効率良く分解を行うこ
とができるからである。The treated water enters the container 2 through the inlet 9, the harmful substances are adsorbed and removed by the adsorbent 1, and exits through the outlet 10. The harmful substances adsorbed by the adsorbent 1 are oxidized and decomposed by the ozone generated by the ozone generator 4. Also, the supply of ozone, the turning on of the ultraviolet lamp, and the supply of hydrogen peroxide or hypochlorous acid may be performed simultaneously or sequentially. When performing sequentially, first supply ozone,
After oxidative decomposition with ozone, ultraviolet irradiation or supply of a chemical solution is preferably performed to oxidize with hydroxyl radicals. Ozone can be generated at a higher concentration than hydroxyl radicals and has high selectivity for reaction with harmful substances, so first decompose harmful substances that can be decomposed by reacting with ozone, radical,
Alternatively, the remaining harmful substances can be decomposed with hydroxyl radicals caused by hydrogen peroxide or the like, and decomposition can be performed efficiently.
【００１６】吸着材１は活性炭、ゼオライト、また、光
触媒を担持した活性炭、ゼオライトを用いる。光触媒を
活性炭、ゼオライトに混ぜて用いても良い。As the adsorbent 1, activated carbon or zeolite, or activated carbon or zeolite carrying a photocatalyst is used. A photocatalyst may be used by mixing it with activated carbon or zeolite.
【００１７】飲用の浄化の場合は、紫外線灯のみ、また
は紫外線灯と光触媒を用い、過酸化水素、次亜塩素酸や
オゾン添加はしない方が良い。In the case of purification for drinking, it is better to use only an ultraviolet lamp or an ultraviolet lamp and a photocatalyst, and not to add hydrogen peroxide, hypochlorous acid or ozone.
【００１８】次に実施例に示した給水給湯機を用いて行
った実験例を示す。Next, an example of an experiment conducted using the water heater / water heater shown in the embodiment will be described.
【００１９】60ppbのフタル酸ジメチル溶液を毎分2Lで
連続的に通水して、浄水装置によるフタル酸ジメチルの
除去性能を確認した。各種分解手段を以下に示す。A 60 ppb dimethyl phthalate solution was continuously passed through at a rate of 2 L / min to confirm the dimethyl phthalate removal performance of the water purifier. Various decomposition means are shown below.
【００２０】（実験例１）分解手段を動作させず、通水
のみを３時間行った。(Experimental Example 1) Only the water was passed for 3 hours without operating the decomposition means.
【００２１】（実験例２）オゾン分解装置を動作させ、
発生したオゾンを供給しながら通水を３時間行った。(Experimental Example 2) An ozonolysis device was operated,
Water was supplied for 3 hours while supplying the generated ozone.
【００２２】（実験例３）紫外線灯を点灯し、オゾン分
解装置を動作させ、発生したオゾンを供給しながら通水
を３時間行った。(Experimental Example 3) The ultraviolet lamp was turned on, the ozone decomposing device was operated, and water was supplied for 3 hours while supplying the generated ozone.
【００２３】（実験例４）紫外線灯を点灯し、オゾン分
解装置を動作させ、発生したオゾンを供給しながら通水
を行い、２時間後にオゾンの供給を停止し、過酸化水素
の供給を行いながらさらに１時間通水を行った。(Experimental Example 4) The ultraviolet lamp was turned on, the ozone decomposing device was operated, and water was supplied while supplying the generated ozone. After 2 hours, the supply of ozone was stopped and the supply of hydrogen peroxide was performed. Water was further passed for one hour.
【００２４】（実験例５）紫外線灯を点灯して通水を３
時間行った。(Experimental Example 5) The ultraviolet lamp was turned on and the water flow was 3 times.
Time went.
【００２５】（実験例６）紫外線灯を点灯し、過酸化水
素を供給しながら通水を３時間行った。(Experimental Example 6) The ultraviolet lamp was turned on, and water was supplied for 3 hours while supplying hydrogen peroxide.
【００２６】（実験例７）活性炭に10gの酸化チタンを
混ぜ、紫外線灯を点灯し通水を３時間行った。(Experimental Example 7) 10 g of titanium oxide was mixed with activated carbon, an ultraviolet lamp was turned on, and water was passed for 3 hours.
【００２７】（実験例８）活性炭に10gの酸化チタンを
混ぜ、オゾン分解装置を動作させ、発生したオゾンを供
給しながら通水を３時間行った。(Experimental Example 8) Activated carbon was mixed with 10 g of titanium oxide, an ozonolysis apparatus was operated, and water was passed for 3 hours while supplying generated ozone.
【００２８】吸着剤には粒状活性炭（クラレケミカル社
製）100mlを用いた。各種分解手段を通水と平行して動
作させ、３時間後の処理水を採取した。処理水95mlをメ
スフラスコに入れｎ−ヘキサン2.5ml、塩化ナトリウ
ム、標準物質100ngを添加し、振とう器を用いて１０分
間、２回水平振とうした。振とう終了後、再度ｎ−ヘキ
サン層を分取し、ガスクロマトグラフ−質量分析計を用
いて分析した。標準物質のピーク強度との比から試料溶
液中のフタル酸ジメチル濃度を計算した。各種分解手段
による処理水中のフタル酸ジメチル濃度を（表１）に示
す。As the adsorbent, 100 ml of granular activated carbon (manufactured by Kuraray Chemical Co., Ltd.) was used. Various decomposition means were operated in parallel with the passage of water, and treated water after 3 hours was collected. 95 ml of treated water was placed in a volumetric flask, and 2.5 ml of n-hexane, sodium chloride and 100 ng of a standard substance were added, and the mixture was horizontally shaken twice for 10 minutes using a shaker. After completion of the shaking, the n-hexane layer was separated again and analyzed using a gas chromatograph-mass spectrometer. The dimethyl phthalate concentration in the sample solution was calculated from the ratio with the peak intensity of the standard substance. The dimethyl phthalate concentration in the treated water by various decomposition means is shown in (Table 1).
【００２９】[0029]
【表１】 [Table 1]
【００３０】すべての実験例において、フタル酸ジメチ
ルの濃度は検出限界の1ppb以下であり、フタル酸ジメチ
ルの吸着除去率が高いことが解った。In all the experimental examples, it was found that the concentration of dimethyl phthalate was below the detection limit of 1 ppb, and the adsorption and removal rate of dimethyl phthalate was high.
【００３１】次に、3時間の処理後の活性炭を取り出
し、活性炭に吸着しているフタル酸ジメチルの濃度を測
定した。取り出した活性炭を200mlのｎ−ヘキサンに浸
漬して活性炭に残存しているフタル酸ジメチルを抽出し
た後、ｎ−ヘキサン層を分取して、塩化ナトリウム、標
準物質100ngを添加し、振とう器を用いて１０分間、２
回水平振とうした。振とう終了後、再度ｎ−ヘキサン層
を分取し、ガスクロマトグラフ−質量分析計を用いて分
析した。標準物質のピーク強度との比から試料溶液中の
フタル酸ジメチル濃度（200mlのｎ−ヘキサン中の濃度
として）を計算した。各種分解手段による浄化後のフタ
ル酸ジメチル濃度と分解率を（表２）に示す。分解率は
実験例１のフタル酸ジメチル濃度を100%として計算し
た。Next, the activated carbon after the treatment for 3 hours was taken out, and the concentration of dimethyl phthalate adsorbed on the activated carbon was measured. The extracted activated carbon was immersed in 200 ml of n-hexane to extract dimethyl phthalate remaining in the activated carbon.Then, the n-hexane layer was separated, and sodium chloride and 100 ng of a standard substance were added. For 10 minutes, 2
Shake horizontally. After the shaking, the n-hexane layer was collected again and analyzed using a gas chromatograph-mass spectrometer. The dimethyl phthalate concentration in the sample solution (as the concentration in 200 ml of n-hexane) was calculated from the ratio to the peak intensity of the standard substance. The dimethyl phthalate concentration and the decomposition rate after purification by various decomposition means are shown in (Table 2). The decomposition rate was calculated assuming that the dimethyl phthalate concentration in Experimental Example 1 was 100%.
【００３２】[0032]
【表２】 [Table 2]
【００３３】実験例２〜８において、フタル酸ジメチル
濃度が実施例１に比べて減少しており、各分解手段によ
り、活性炭に吸着したフタル酸ジメチルが分解されてい
ることがわかった。特に、実施例３、４、７、８では10
%以下に除去することができた。これにより、本発明の
浄水装置によれば、水中からの有害物質の連続的な吸着
除去と、吸着された有害物質の酸化分解を並行して行う
ことができることが明らかになった。In Experimental Examples 2 to 8, the dimethyl phthalate concentration was lower than that in Example 1, and it was found that dimethyl phthalate adsorbed on activated carbon was decomposed by each decomposition means. In particular, in Examples 3, 4, 7, and 8,
% Or less. Thereby, according to the water purification device of the present invention, it has been clarified that the continuous adsorption and removal of the harmful substance from the water and the oxidative decomposition of the adsorbed harmful substance can be performed in parallel.
【００３４】[0034]
【発明の効果】本発明の請求項１記載の発明によれば、
水中からの有害物質の除去だけでなく、有害物質を分解
し、環境中への有害物質の再放出を防ぐことができる。According to the first aspect of the present invention,
It can not only remove harmful substances from water but also decompose harmful substances and prevent the release of harmful substances into the environment.
【００３５】本発明の請求項２記載の発明によれば、有
害物質の吸着除去と有害物質の酸化分解を並行して行う
ことができる。According to the second aspect of the present invention, the removal of the harmful substance and the oxidative decomposition of the harmful substance can be performed in parallel.
【００３６】本発明の請求項３記載の発明によれば、比
較的簡単な装置により、また高濃度で発生するために、
有害物質を効率良く酸化分解できる。According to the invention of claim 3 of the present invention, since it is generated by a relatively simple device and at a high concentration,
The harmful substances can be efficiently oxidatively decomposed.
【００３７】本発明の請求項４記載の発明によれば、高
濃度で反応するオゾン酸化と、反応速度が速いヒドロキ
シルラジカルによる酸化を併用するために、効率良く有
害物質を分解できる。また、連鎖反応によりさらに酸化
反応を促進することができる。According to the invention of claim 4 of the present invention, harmful substances can be efficiently decomposed because of the combined use of ozone oxidation, which reacts at a high concentration, and oxidation with hydroxyl radicals, which have a high reaction rate. Further, the oxidation reaction can be further promoted by a chain reaction.
【００３８】本発明の請求項５記載の発明によれば、Ｃ
−Ｈ結合を切断するのに必要な100kcal／mol以上のエネ
ルギーを得ることができ、Ｃ−Ｈ結合を切断することが
できるのである。According to the fifth aspect of the present invention, C
The energy of 100 kcal / mol or more necessary for breaking the -H bond can be obtained, and the CH bond can be broken.
【００３９】本発明の請求項６記載の発明によれば、光
触媒表面でヒドロキシルラジカルを発生することがで
き、それにより酸化分解することができる。また、ヒド
ロキシルラジカルが光触媒表面に結合したまま反応に関
与するので反応物へ酸素原子が移行して反応副生成物と
して酸化物が生じるのを防ぐことが出来る。According to the invention of claim 6 of the present invention, hydroxyl radicals can be generated on the surface of the photocatalyst, and can be oxidatively decomposed. Further, since the hydroxyl radical participates in the reaction while being bonded to the photocatalyst surface, it is possible to prevent the transfer of oxygen atoms to the reactant and the formation of an oxide as a reaction by-product.
【図１】本発明の一実施例を示す浄水装置の断面図FIG. 1 is a sectional view of a water purification apparatus showing one embodiment of the present invention.
１ 吸着材 ２ 容器 ３ 紫外線灯 ４ オゾン発生装置 DESCRIPTION OF SYMBOLS 1 Adsorbent 2 Container 3 Ultraviolet light 4 Ozone generator
フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ０２Ｆ 1/76 Ｃ０２Ｆ 1/76 Ｚ 1/78 1/78 (72)発明者 守屋 好文 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 Ｆターム(参考） 4D024 AA02 AB04 AB11 AB14 BA02 BA07 CA11 DB23 DB24 DB30 4D037 AA02 AB11 AB14 AB16 AB18 BA18 BB09 CA01 CA11 CA12 4D050 AA04 AB16 AB19 BB02 BB04 BB09 BC04 BC05 BC09 BD02 BD03 CA06 CA07 4G069 AA03 BA04A BA04B BA07A BA07B BA08A BA08B BA48A CA01 CA07 CA10 CA11 CA19 EA02Y Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat II (Reference) C02F 1/76 C02F 1/76 Z 1/78 1/78 (72) Inventor Yoshifumi Moriya 1006 Odakadoma, Kadoma City, Osaka Prefecture F term (reference) in Matsushita Electric Industrial Co., Ltd. BA04B BA07A BA07B BA08A BA08B BA48A CA01 CA07 CA10 CA11 CA19 EA02Y
Claims (6)
吸着部と、吸着部に吸着された有害物質を酸化分解する
手段を有し、水中の有害物資を分解し無害化することが
できる浄水装置。1. A water purification system comprising: an adsorbing section for removing harmful substances in water by an adsorbent; and a means for oxidatively decomposing harmful substances adsorbed on the adsorbing section to decompose and detoxify harmful substances in water. apparatus.
に吸着された有害物質の酸化分解が同じ容器内で行われ
ることを特徴とする請求項１記載の浄水装置。2. The water purification apparatus according to claim 1, wherein the adsorption of the harmful substance by the adsorbent and the oxidative decomposition of the harmful substance adsorbed by the adsorption section are performed in the same container.
を特徴とする請求項１または２記載の浄水装置。3. The water purification apparatus according to claim 1, wherein harmful substances are decomposed using ozone.
たは過酸化水素の少なくとも一つを併用することを特徴
とする請求項３記載の浄水装置。4. The water purification apparatus according to claim 3, wherein the harmful substance is decomposed by using ozone and at least one of ultraviolet light and hydrogen peroxide.
線と過酸化水素、紫外線と次亜塩素酸のいずれかによる
ことを特徴とする請求項１記載の浄水装置。5. The water purification apparatus according to claim 1, wherein the decomposition of the harmful substance is caused by one of ultraviolet rays, ultraviolet rays and hydrogen peroxide, and ultraviolet rays and hypochlorous acid.
る請求項１〜５いずれか１項に記載の浄水装置。6. The water purification device according to claim 1, wherein the adsorbent has a photocatalyst.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000272804A JP2002079275A (en) | 2000-09-08 | 2000-09-08 | Water cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000272804A JP2002079275A (en) | 2000-09-08 | 2000-09-08 | Water cleaning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002079275A true JP2002079275A (en) | 2002-03-19 |
Family
ID=18758857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000272804A Pending JP2002079275A (en) | 2000-09-08 | 2000-09-08 | Water cleaning device |
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| Country | Link |
|---|---|
| JP (1) | JP2002079275A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004313834A (en) * | 2003-04-11 | 2004-11-11 | Mitsui Eng & Shipbuild Co Ltd | Photochemical reaction method, liquid treatment method, and liquid treatment apparatus |
| JP2006110470A (en) * | 2004-10-14 | 2006-04-27 | Ueda Shikimono Kojo:Kk | Water cleaning agent |
| JP2021109176A (en) * | 2020-01-14 | 2021-08-02 | 飯田グループホールディングス株式会社 | Formic acid generation method and formic acid generation system |
-
2000
- 2000-09-08 JP JP2000272804A patent/JP2002079275A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004313834A (en) * | 2003-04-11 | 2004-11-11 | Mitsui Eng & Shipbuild Co Ltd | Photochemical reaction method, liquid treatment method, and liquid treatment apparatus |
| JP2006110470A (en) * | 2004-10-14 | 2006-04-27 | Ueda Shikimono Kojo:Kk | Water cleaning agent |
| JP2021109176A (en) * | 2020-01-14 | 2021-08-02 | 飯田グループホールディングス株式会社 | Formic acid generation method and formic acid generation system |
| JP7076113B2 (en) | 2020-01-14 | 2022-05-27 | 飯田グループホールディングス株式会社 | Formic acid production method and formic acid production system |
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