JPH0422486A - Removal of residual oxidant in water - Google Patents
Removal of residual oxidant in waterInfo
- Publication number
- JPH0422486A JPH0422486A JP12405290A JP12405290A JPH0422486A JP H0422486 A JPH0422486 A JP H0422486A JP 12405290 A JP12405290 A JP 12405290A JP 12405290 A JP12405290 A JP 12405290A JP H0422486 A JPH0422486 A JP H0422486A
- Authority
- JP
- Japan
- Prior art keywords
- activated carbon
- water
- seawater
- residual oxidant
- oxidant
- 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
- 239000007800 oxidant agent Substances 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 230000001590 oxidative effect Effects 0.000 title abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000013535 sea water Substances 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 8
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 abstract description 7
- 235000013162 Cocos nucifera Nutrition 0.000 abstract description 5
- 244000060011 Cocos nucifera Species 0.000 abstract description 5
- 230000001954 sterilising effect Effects 0.000 abstract description 3
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 3
- 230000002411 adverse Effects 0.000 abstract description 2
- 240000007594 Oryza sativa Species 0.000 abstract 1
- 235000007164 Oryza sativa Nutrition 0.000 abstract 1
- 239000010903 husk Substances 0.000 abstract 1
- 235000009566 rice Nutrition 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 description 5
- 230000005587 bubbling Effects 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 2
- 235000019345 sodium thiosulphate Nutrition 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 208000030159 metabolic disease Diseases 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000002226 simultaneous effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
Landscapes
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Water Treatment By Sorption (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は水中の残留オキシダントを除去する方法に関し
、特にオゾン海水茫殺菌装置を経た海水に残留するオキ
シダントの除去に有利に適用できる方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for removing residual oxidants in water, and particularly to a method that can be advantageously applied to removing oxidants remaining in seawater that has passed through an ozone seawater sterilizer.
従来、水中の残留オキシダントの除去法としては、■中
和滴定に使用するチオ硫酸ソーダｕａ２ｓｚｏｓ）を添
加する方法及び■空気曝気により残留オキシダントを気
相に放散させる方法があった。Conventionally, methods for removing residual oxidants in water include (1) adding sodium thiosulfate (UA2SZOS) used for neutralization titration, and (2) dissipating residual oxidants into the gas phase by air aeration.
前記■の方法は海水中にチオ硫酸ソーダ（還元剤）を添
加するため、数世代プランクトンを培養すると代謝障害
を生じ培養できなくなるという問題点があり、他方■の
方法は薬品を添加しないので上述の恐れはないが脱気処
理時間が長くなる（１〜２時間）ため、人里処理には、
大形の脱気槽が必要になる出いう不具合が生ずる。Method (2) above involves the addition of sodium thiosulfate (reducing agent) to seawater, which has the problem that if plankton of several generations is cultured, metabolic disorders occur and cultivation becomes impossible, whereas method (2) does not add chemicals, so it is difficult to cultivate plankton. Although there is no fear of
A problem arises in that a large deaeration tank is required.
そこで本発明は上記技術水準に鑑み、従来法におけるよ
うな不具合のない水中の残留オキシダントを除去する方
法を提供しようとするものである。In view of the above-mentioned state of the art, the present invention seeks to provide a method for removing residual oxidants in water without the problems encountered in conventional methods.
本発明は残留オキシダントを含有する水を、空塔速度２
Ｘ １０’ （１／１４ｒ）以下で活性炭層を通過
させることを特徴とする水中の残留オキシダントの除去
方法である。The present invention removes water containing residual oxidants at a superficial velocity of 2
This is a method for removing residual oxidants in water, which is characterized by passing the water through an activated carbon layer at a pressure of X 10' (1/14r) or less.
本発明をや５具体的に述べると、本発明はオゾンによる
殺菌後の海水又は水の流路又は貯槽に活性炭（例えばヤ
シガラ活性炭、フスマ等）をフィルター等でサンドイッ
チ状にして活性炭層を設置し、該活性炭層に前記海水又
は水を空塔速度２Ｘ１０３ （１／Ｈｒ）で通過させる
ことによって行われる。To describe the present invention more specifically, the present invention involves installing an activated carbon layer in a channel or storage tank of seawater or water after sterilization with ozone by sandwiching activated carbon (e.g., coconut shell activated carbon, bran, etc.) with a filter or the like. , by passing the seawater or water through the activated carbon layer at a superficial velocity of 2×10 3 (1/Hr).
残留オキシダントを含む海水を活性炭層に通すと、その
触媒作用により残留オキシダントは次のように分解され
る。When seawater containing residual oxidants is passed through an activated carbon layer, the residual oxidants are decomposed by the catalytic action as follows.
Ｂｒ０− −＋ Ｂｒ−十ｚ０２
ＣＩＯ−→ｃｌ−十％ｏｚ
従来法のエアーバブリング法と比較して活性炭の処理効
果が向上する事実を第２図に図表として示す。試験装置
は第２図の右上欄に示したものを使用した。同試験装置
において１は空気、２は活性炭を示す。Br0--+ Br-10z02 CIO-→cl-10% oz The fact that the treatment effect of activated carbon is improved compared to the conventional air bubbling method is shown graphically in FIG. The test device shown in the upper right column of FIG. 2 was used. In the same test device, 1 indicates air and 2 indicates activated carbon.
第２図から、従来法のエアーバブリング法では空気量を
少々増加させても、その効果は少ないが、活性炭を存在
させた場合、その効果は著しく、またオキシダントの許
容残留値になる時間は単なるエアーバブリング法の場合
、約８０分間か−ったものが、７〜２１分ですむことが
判る。From Figure 2, it can be seen that in the conventional air bubbling method, even if the amount of air is increased slightly, the effect is small, but when activated carbon is present, the effect is significant, and the time required to reach the allowable residual value of the oxidant is simply It can be seen that in the case of the air bubbling method, it took about 80 minutes, but it only took 7 to 21 minutes.
また、オキシダント分解物は海水中に元来存在していた
イオンや０□であり、生物系に何んら悪影響を与えない
。In addition, the oxidant decomposition products are ions and 0□ that originally existed in seawater, and do not have any adverse effects on biological systems.
本発明の一実施例を第１図によって説明する。 An embodiment of the present invention will be described with reference to FIG.
取水海水１はストレーナ２で砂等を除去後、海水ポンプ
３により更に海水フィルタ４により微細な有機物等を除
去する。The intake seawater 1 is passed through a strainer 2 to remove sand and the like, and then passed through a seawater pump 3 and a seawater filter 4 to remove fine organic matter.
一方、空気は原料ガスコンプレッサ６により加圧され、
原料ガスドライヤ７により除湿後、オゾナイザ８に供給
され、オゾンガスとなり、オゾンガスはエジェクタ５に
より精製海水に溶解される。On the other hand, the air is pressurized by the raw material gas compressor 6,
After being dehumidified by the raw material gas dryer 7, it is supplied to the ozonizer 8 and becomes ozone gas, which is dissolved in purified seawater by the ejector 5.
未溶解オゾンガスは気液分離器９で海水と分離され、オ
ゾン吸着槽１２で除去後大気中に放出される。Undissolved ozone gas is separated from seawater in a gas-liquid separator 9, removed in an ozone adsorption tank 12, and then released into the atmosphere.
オゾン殺菌された海水は残留オキシダントを除去するた
め、活性炭槽１０へ通され、貯水槽（養漁槽等）１１へ
供給される。The ozone-sterilized seawater is passed through an activated carbon tank 10 to remove residual oxidants, and then supplied to a water storage tank (such as a fishing tank) 11.
活性炭槽（活性炭：ヤシガラ）１０の残留オキシダント
分解特性を第３図に示す。The residual oxidant decomposition characteristics of the activated carbon tank (activated carbon: coconut shell) 10 are shown in FIG.
空塔速度２ｘｌＯ’ （１／Ｈｒ）で分解率８３％で
ある。The decomposition rate is 83% at a superficial velocity of 2xlO' (1/Hr).
オゾン殺菌後の通常の残留オキシダント濃度は１．１３
ｐｐｍであり、従って空塔速度２×１０３（１／Ｈｒ
）以下では、残留オキシダントは０．１９ｐｐｍ以下と
なり、許容値０．２ ｐｐｍを越えないので生物の培養
等には間頚ない。The normal residual oxidant concentration after ozone sterilization is 1.13
ppm, therefore the superficial velocity is 2 x 103 (1/Hr
), the residual oxidant will be 0.19 ppm or less and will not exceed the permissible value of 0.2 ppm, so there is no problem in cultivating living things.
１）残留オキシダントの除去処理が短時間従来の １７
４〜１／１０でできる。1) Removal of residual oxidants is shorter than conventional method 17
It can be done in 4 to 1/10.
２）活性炭による残留オキシダントの除去は触媒作用に
よる分解なので、その使用寿命は半永久的である。2) Since the removal of residual oxidants by activated carbon is decomposition by catalytic action, its service life is semi-permanent.
３）活性炭（ヤシガラ）は安価である。3) Activated carbon (coconut shell) is inexpensive.
４）脱色、脱臭等の同時効果も期待できる。4) Simultaneous effects such as decolorization and deodorization can also be expected.
５） ランニングコストがほとんど不要である。5) Running costs are almost unnecessary.
第１図は本発明の一実施例の説明図、第２図は各種処理
法の残留オキシダント除去効果の比較図表、第３図は活
性炭（ヤシガラ）の分解特性を示す図表である。FIG. 1 is an explanatory diagram of an embodiment of the present invention, FIG. 2 is a comparative chart of the residual oxidant removal effects of various treatment methods, and FIG. 3 is a chart showing the decomposition characteristics of activated carbon (coconut shell).
Claims (1)
３（１／Ｈｒ）以下で活性炭層を通過させることを特徴
とする水中の残留オキシダントの除去方法。Water containing residual oxidants is transported at a superficial velocity of 2 x 10^
A method for removing residual oxidants in water, which comprises passing through an activated carbon layer at a rate of 3 (1/Hr) or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12405290A JPH0422486A (en) | 1990-05-16 | 1990-05-16 | Removal of residual oxidant in water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12405290A JPH0422486A (en) | 1990-05-16 | 1990-05-16 | Removal of residual oxidant in water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0422486A true JPH0422486A (en) | 1992-01-27 |
Family
ID=14875786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12405290A Pending JPH0422486A (en) | 1990-05-16 | 1990-05-16 | Removal of residual oxidant in water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0422486A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007092973A (en) * | 2005-09-30 | 2007-04-12 | Toto Kogyo Co Ltd | Rotation transmission device |
| CN102030400A (en) * | 2010-10-28 | 2011-04-27 | 昆山科技大学 | Method for treating liquid ozone by using carbon-containing materials |
| KR20170142201A (en) | 2015-05-13 | 2017-12-27 | 도판 인사츠 가부시키가이샤 | Liquid crystal display |
-
1990
- 1990-05-16 JP JP12405290A patent/JPH0422486A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007092973A (en) * | 2005-09-30 | 2007-04-12 | Toto Kogyo Co Ltd | Rotation transmission device |
| CN102030400A (en) * | 2010-10-28 | 2011-04-27 | 昆山科技大学 | Method for treating liquid ozone by using carbon-containing materials |
| KR20170142201A (en) | 2015-05-13 | 2017-12-27 | 도판 인사츠 가부시키가이샤 | Liquid crystal display |
| US10452221B2 (en) | 2015-05-13 | 2019-10-22 | Toppan Printing Co., Ltd. | Liquid crystal display device |
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