JPH02187192A - Water purifying agent - Google Patents

Water purifying agent

Info

Publication number
JPH02187192A
JPH02187192A JP627489A JP627489A JPH02187192A JP H02187192 A JPH02187192 A JP H02187192A JP 627489 A JP627489 A JP 627489A JP 627489 A JP627489 A JP 627489A JP H02187192 A JPH02187192 A JP H02187192A
Authority
JP
Japan
Prior art keywords
sodium
water
derivative
derivatives
chlorine
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
Application number
JP627489A
Other languages
Japanese (ja)
Other versions
JP2721531B2 (en
Inventor
Kozo Ohira
大平 晃三
Sachiko Sakurai
桜井 左知子
Masaki Tsumadori
妻鳥 正樹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kao Corp
Original Assignee
Kao Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kao Corp filed Critical Kao Corp
Priority to JP1006274A priority Critical patent/JP2721531B2/en
Publication of JPH02187192A publication Critical patent/JPH02187192A/en
Application granted granted Critical
Publication of JP2721531B2 publication Critical patent/JP2721531B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Removal Of Specific Substances (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

PURPOSE:To effectively remove the bleaching powder smell and chlorine smell of water by preparing a purifying agent for drinking water by compounding one or more kind of a compound selected from a group consisting of sugar and its derivative, amino acid and its derivative and nucleotide and its derivative. CONSTITUTION:A water purifying agent is prepared by compounding one or more kind of a compound selected from a group consisting of sugar and its derivative, amino acid and its derivative and nucleotide and its derivative. As sugar and its derivative, there are D-xylose, D-sorbitol, erythhorbic acid, potassium and sodium erythorbates or the like. As amino acid and its derivative, there are sodium L-aspartate and DL-alanine. As nucleotide and its derivative, there are sodium 5'-inosinate and sodium 5'-uridylate.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は浄水剤に関し、より詳しくは、水道水中の異臭
味の原因となる残留有効塩素を効率よく除去する安全な
浄水剤に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a water purifying agent, and more particularly to a safe water purifying agent that efficiently removes residual available chlorine that causes off-odor taste in tap water.

〔従来の技術及び発明が解決しようとする課題〕近年、
環境汚染に伴う水源の水質の悪化が進むにつれ、水道水
の異臭味が問題となってきている。
[Problems to be solved by conventional techniques and inventions] In recent years,
As the quality of water sources continues to deteriorate due to environmental pollution, unusual odor and taste in tap water has become a problem.

異臭味の内容としては、消毒に用いる塩素に由来する残
留有効塩素(カルキ臭・塩素臭)、水源地に発生するラ
ン藻類などの生物の代謝物に由来する2−メチルイソボ
ルネオール、ジオスミンなど(カビ臭・生くさい臭い)
及び配管の錆に由来する鉄分(金気臭)が挙げられる。
Odors and tastes include residual available chlorine (calky odor/chlorine odor) derived from chlorine used for disinfection, 2-methylisoborneol, diosmin, etc. derived from metabolites of organisms such as blue-green algae that occur in water sources. Musty smell/fishy smell)
and iron (metallic odor) derived from rust in piping.

これらの異臭味を除去するために水道水用の浄水器が急
速に普及してきている。このような浄水器の濾材として
は、活性炭やイオン交換樹脂が用いられ、特にカルキ臭
・塩素臭を除去するには吸着除去作用を有する活性炭が
優れている。また金気臭は、その原因物質となる酸化鉄
粒子が比較的大きな粒子径を有するため、フィルター類
の濾過作用により比較的容易に除去することができる。
Water purifiers for tap water are rapidly becoming popular in order to remove these unpleasant odors and tastes. Activated carbon and ion exchange resins are used as filter media in such water purifiers, and activated carbon, which has an adsorption and removal effect, is particularly effective in removing chlorine and chlorine odors. Further, since the iron oxide particles that are the causative agent of metallic odor have a relatively large particle size, they can be relatively easily removed by the filtering action of filters.

しかしながら、これらの浄水器は蛇口に取付けるタイプ
のものが多く、お茶やコーヒーを入れる時に、その場で
使用するには適さない。水道水の水圧は1〜3kg/−
位であり、酸化鉄粒子を除去するためのフィルター(最
近では中空糸膜タイプのものが上布されている。)を通
しても充分な水量を得ることができるが、持ち運びが可
能でその場で使用するためのドリップタイプ、ティーバ
ッグタイプ、ポットタイプなどの浄水器では、水圧とし
て静水圧で0.01kg/ ctA位しか得られないた
め、フィルターを使用すると充分な水量を得ることがで
きない。またフィルターなしでは濾材である活性炭やイ
オン交換樹脂自体が水中にもれ出してしまうため、安全
性の上で好ましくない。また、このような持ち運びが可
能でその場で使用する浄水器の場合は、長期間使用する
と菌が発生するという問題があり、できる限り使い捨て
タイプとするのが好ましいが、この場合にはコストの問
題からできる限り少量の剤で異臭味成分を除去すること
が望まれる。しかしながら、活性炭は多量に使用した場
合はカルキ臭・塩素臭を効果的に除去できるが、少量で
は除去速度が遅く使用に耐えられない。
However, most of these water purifiers are attached to a faucet, and are not suitable for use on the spot when making tea or coffee. Water pressure of tap water is 1 to 3 kg/-
Although it is possible to obtain a sufficient amount of water by passing it through a filter to remove iron oxide particles (recently, hollow fiber membrane type filters are used), it is portable and can be used on the spot. Drip type, tea bag type, pot type water purifiers, etc., can only provide a static water pressure of about 0.01 kg/ctA, so if you use a filter, you will not be able to obtain a sufficient amount of water. In addition, without a filter, the activated carbon and ion exchange resin themselves that are the filter media will leak into the water, which is not desirable from a safety standpoint. In addition, in the case of such portable water purifiers that can be used on the spot, there is the problem that bacteria will develop if used for a long period of time, so it is preferable to use a disposable type as much as possible, but in this case it is costly. Due to this problem, it is desirable to remove off-flavor components using as little amount of agent as possible. However, when activated carbon is used in large amounts, it can effectively remove chlorine odor and chlorine odor, but when used in small amounts, the removal rate is too slow to withstand use.

水の異臭味であるカルキ臭・塩素臭・カビ臭・金気臭の
中で最も9遍的に発生しているカルキ臭・塩素臭を除去
するための活性炭には以上のような問題点があった。
Activated carbon has the above-mentioned problems in order to remove the chlorine odor and chlorine odor, which are the most commonly occurring chlorine odor, chlorine odor, mold odor, and metallic odor, which are the unpleasant tastes of water. there were.

特開昭61−106160号、特開昭62−22748
9号、特開昭62−95194号にはこれらの問題を解
決する手段として、L−アスコルビン酸の還元力を利用
する技術が開示さている。しかしながら、L−アスコル
ビン酸は非常に不安定な物質であり、アルミラミネート
包装などの方法で空気と遮断した状態で使用者に提供し
なければならず、コスト高となる。
JP-A-61-106160, JP-A-62-22748
No. 9, JP-A No. 62-95194 discloses a technique that utilizes the reducing power of L-ascorbic acid as a means to solve these problems. However, L-ascorbic acid is a very unstable substance, and must be provided to users in a state where it is isolated from air using a method such as aluminum laminated packaging, resulting in high costs.

そこで本発明の目的は、水に添加しても安全で少量でも
効果的にカルキ臭・塩素臭を除去できる安価な浄水剤を
提供することである。
SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an inexpensive water purifying agent that is safe to add to water and can effectively remove chlorine and chlorine odors even in small amounts.

〔課題を解決するための手段〕[Means to solve the problem]

本発明者らは、上記課題を解決すべく鋭意検討研究を重
ねた結果、糖及びその誘導体、アミノ酸及びその誘導体
、並びにヌクレオチド及びその誘導体からなる群より選
ばれる1種以上を含有する浄水剤を使用することにより
、上記目的を達成し得ることを見出し本発明を完成する
に至った。
As a result of intensive study and research to solve the above problems, the present inventors have developed a water purifying agent containing one or more selected from the group consisting of sugars and derivatives thereof, amino acids and derivatives thereof, and nucleotides and derivatives thereof. The present inventors have found that the above object can be achieved by using the present invention, and have completed the present invention.

即ち、本発明は、糖及びその誘導体、アミノ酸及びその
誘導体、並びにヌクレオチド及びその誘導体からなる群
の1種以上を含有してなる飲料水用の浄水剤を提供する
ものである。
That is, the present invention provides a water purifier for drinking water containing one or more of the group consisting of sugars and derivatives thereof, amino acids and derivatives thereof, and nucleotides and derivatives thereof.

本発明に使用される糖及びその誘導体、アミノ酸及びそ
の誘導体、ヌクレオチド及びその誘導体は、人が経口投
与されても安全でかつカルキ臭・塩素臭の原因である次
亜塩素酸を分解除去するような還元力を有し、空気中で
も安定なものならどのようなものでも良いが、好ましく
は次に示すような化合物が挙げられる。
The sugars and derivatives thereof, amino acids and derivatives thereof, nucleotides and derivatives thereof used in the present invention are safe even when administered orally to humans, and are capable of decomposing and removing hypochlorous acid, which is the cause of chalky and chlorine odors. Any compound may be used as long as it has a strong reducing power and is stable even in the air, but the following compounds are preferable.

糖及びその誘導体としては、D−キシロース、D−ソル
ビット、エリソルビン酸、エリソルビン酸のカリウムま
たはナトリウム塩などが挙げられ、これらのうちエリソ
ルビン酸のカリウムまたはナトリウム塩が好ましい。
Examples of sugars and derivatives thereof include D-xylose, D-sorbitol, erythorbic acid, potassium or sodium salts of erythorbic acid, and among these, potassium or sodium salts of erythorbic acid are preferred.

アミノ酸及びその誘導体としては、L−アスパラギン酸
ナトリウム、DL−アラニン、L−アルギニン−し−グ
ルタミン酸塩、L−イソロイシン、グリシン、L−グル
タミン酸、L−グルタミン酸ナトリウム、L−システイ
ン、DL−スレオニン、L−スレオニン、L−テアニン
、DL−トリプトファン、L−トリプトファン、L−バ
リン、L−ヒスチジン塩酸L L−フェニルアラニン、
DL−メチオニン、L−メチオニン、L−リジン、L−
リジン−L−アスパラギン酸塩、L−リジン塩酸塩、L
−リジン−L−グルタミン酸塩などが挙げられ、これら
のうちL−システイン、DL−トリプトファン、DL−
メチオニン、L−メチオニンが好ましい。
Amino acids and derivatives thereof include sodium L-aspartate, DL-alanine, L-arginine-glutamate, L-isoleucine, glycine, L-glutamic acid, sodium L-glutamate, L-cysteine, DL-threonine, and L-cysteine. -Threonine, L-theanine, DL-tryptophan, L-tryptophan, L-valine, L-histidine hydrochloride L-phenylalanine,
DL-methionine, L-methionine, L-lysine, L-
Lysine-L-aspartate, L-lysine hydrochloride, L
-lysine-L-glutamate, among which L-cysteine, DL-tryptophan, DL-
Methionine and L-methionine are preferred.

ヌクレオチド及びその誘導体としては、5゛イノシン酸
ナトリウム、5°−ウリジル酸ナトリウム、5゛−グア
ニル酸ナトリウム、5°−シチジル酸ナトリウムなどが
挙げられる。
Examples of nucleotides and derivatives thereof include sodium 5'-inosinate, sodium 5'-uridylate, sodium 5'-guanylate, sodium 5'-cytidylate, and the like.

これらの化合物は、1 ppmの残留有効塩素を含有す
るモデル水11に、lB”IO+wgという微量の添加
量で瞬時に次亜塩素酸を分解することが可能であるにも
かかわらず、空気中の酸素に対しては安定で分解されな
い。活性炭で同様の効果を得ようとするとその10倍〜
100倍の添加量が必要である。
Although these compounds can instantly decompose hypochlorous acid in model water 11 containing 1 ppm of residual available chlorine by adding a small amount of 1B"IO+wg, It is stable against oxygen and does not decompose.If you try to achieve the same effect with activated carbon, it will be 10 times more effective.
It is necessary to add 100 times more amount.

実際に浄水器として使用する場合には、これらの化合物
は人が経口投与されても安全であるため、必要量を小袋
に入れておき、カルキ臭・塩素臭の強い水に直接添加し
ても良いし、また適当な方法で、繊維や、シリカ、アル
ミナ、ゼオライトなどの無機担体に固定化し、濾材とし
て使用しても良い。
When actually used as a water purifier, these compounds are safe even when administered orally to humans, so you can put the required amount in a sachet and add it directly to water with a strong chlorine or chlorine odor. Alternatively, it may be immobilized on an inorganic carrier such as fiber, silica, alumina, or zeolite by an appropriate method and used as a filter medium.

濾材として使用するための 固定化の方法は、例えば水
不溶性の化合物の場合は、アセトンなどの適当な有機溶
媒に溶解し、この有機溶媒溶液に繊維、シリカ、アルミ
ナ、ゼオライトなどを浸漬後、乾燥することにより固定
化することができる。また、水溶性の化合物の場合は、
いずれの化合物もヒドロキシル基やカルボキシル基など
の官能基を有しているので、ヒドロキシル基やカルボキ
シル基を有する水不溶性の高分子物質と適当な方法でエ
ステル化またはエーテル化反応を行うことにより固定化
することができる。このように濾材として使用するため
に固定化した場合は、粒状、繊維状、フィルム状、ペー
パー状のように様々な形態として使用することができる
。固定化した濾材として使用する場合は、持ち運びが可
能で、その場で使用するタイプの浄水器だけでなく、水
道の蛇口に直接取付けるタイプの浄水器に応用しても充
分なカルキ臭・塩素臭の除去効果が得られる。
The immobilization method for use as a filter medium is, for example, in the case of water-insoluble compounds, they are dissolved in a suitable organic solvent such as acetone, fibers, silica, alumina, zeolite, etc. are immersed in this organic solvent solution, and then dried. It can be immobilized by doing this. In addition, in the case of water-soluble compounds,
Since both compounds have functional groups such as hydroxyl and carboxyl groups, they can be immobilized by performing an esterification or etherification reaction with a water-insoluble polymeric substance having hydroxyl or carboxyl groups using an appropriate method. can do. When immobilized for use as a filter medium, it can be used in various forms such as granules, fibers, films, and papers. When used as a fixed filter medium, it is portable and has sufficient chlorine and chlorine odor to be applied not only to water purifiers that are used on the spot, but also to water purifiers that are attached directly to the water faucet. The removal effect can be obtained.

また補助的な目的で、あるいは塩素以外のカビ臭などの
匂いを除去する目的で、濾過速度を下げない程度の活性
炭や、活性炭素繊維、あるいはスチレン−ジビニルベン
ゼン系の吸着樹脂などの他の吸着剤を組み合わせて使用
しても良い。さらに、硬度成分を取り除く目的でイオン
交換樹脂を併用しても良いし、逆にミネラル成分を添加
し、水をおいしくする目的でナトリウム、カリウム、マ
グネシウム、カルシウムなどの金属の塩化物、硫酸塩、
炭酸塩、重炭酸塩なども併用できる。さらに、「太陽石
」、「麦飯石」、「コーラル石」などの浄水器として良
く知られている鉱物や、石灰石、珪砂なども併用しても
よい。
In addition, for auxiliary purposes or for the purpose of removing odors other than chlorine such as mold odor, other adsorbents such as activated carbon, activated carbon fibers, or styrene-divinylbenzene adsorption resins may be used to the extent that the filtration rate is not reduced. A combination of agents may be used. Furthermore, ion exchange resins may be used in combination to remove hardness components, or conversely, chlorides and sulfates of metals such as sodium, potassium, magnesium, and calcium may be used to add mineral components to make the water more delicious.
Carbonates, bicarbonates, etc. can also be used in combination. Furthermore, minerals that are well known as water purifiers such as "Taiyo Stone", "Maifan Stone", and "Coral Stone", limestone, silica sand, etc. may also be used in combination.

〔実施例〕〔Example〕

以下実施例によって、本発明の詳細な説明するが、本発
明はこれらの実施例に限定されるものではない。
The present invention will be described in detail below with reference to Examples, but the present invention is not limited to these Examples.

ス」I」L 表−1に示した本発明による浄水剤を0.001 g、
0.01g、0.1 gそれぞれ計り取り、有効塩素濃
度が1 ppmになるように調整した11のモデル水に
添加し、15秒後、30秒後、1分後、5分後、30分
後に経時的に残留有効塩素濃度を測定した。
0.001 g of the water purifying agent according to the present invention shown in Table 1,
Weigh out 0.01 g and 0.1 g respectively, add them to 11 model waters adjusted to have an effective chlorine concentration of 1 ppm, and add them for 15 seconds, 30 seconds, 1 minute, 5 minutes, and 30 minutes. Afterwards, the residual available chlorine concentration was measured over time.

残留有効塩素濃度は測定時に20mfの検水を採取し、
0.5−のオルトトリジン塩酸塩溶液(0,1mZ)を
添加し、5分後に436nmの吸光度を紫外・可視分光
光度計(日立spectrophtometer 1l
−3200)で測定し、予め作成しておいた検量線から
吸光度を残留有効塩素濃度に換算することにより求めた
。これらの結果を表−1に示す。
The residual effective chlorine concentration is measured by taking a 20mf sample of water.
A 0.5- orthotolidine hydrochloride solution (0.1 mZ) was added, and after 5 minutes, the absorbance at 436 nm was measured using an ultraviolet/visible spectrophotometer (Hitachi spectrophtometer 1l).
-3200) and by converting the absorbance into the residual available chlorine concentration from a calibration curve prepared in advance. These results are shown in Table-1.

此1■11 市販活性炭(白鷺WHA武田薬品工業■製)を0.00
1 g〜100g使用し、実施例1と同様の試験を行っ
た。
This 1■11 Commercially available activated carbon (Shirasagi WHA Takeda Pharmaceutical Co., Ltd.) 0.00
The same test as in Example 1 was conducted using 1 g to 100 g.

この結果を表−1に示す。The results are shown in Table-1.

表           1 表−1つづき 表−1つづき 表−1つづき 表 ■つづき く結果〉 表−1かられかるように、本発明の浄水剤は市販活性炭
の1/100〜1 /100000の量でも充分な塩素
臭除去効果がある。特にエリソルビン酸、■−−システ
イン、L−1−リプトファン、L−メチオニンの効果が
優れている。
Table 1 Table 1 Continued Table 1 Continued Table 1 Continued Table 1 ■Continued Results> As seen from Table 1, the water purifying agent of the present invention has a sufficient amount of 1/100 to 1/100,000 of commercially available activated carbon. Effective in removing chlorine odor. In particular, the effects of erythorbic acid, ■--cysteine, L-1-lyptophan, and L-methionine are excellent.

表 ス41ボ1 表−2に示す本発明による浄水剤を20℃1.40℃、
50℃の各恒温室に開放状態で48時間放置した。保存
期間終了後に浄水剤0.01 gを採取し、有効塩素濃
度が1 ppmになるように調整した11のモデル水に
添加し、実施例1と同様に残留有効塩素濃度を測定した
Table 41 Bo 1 The water purifying agent according to the present invention shown in Table 2 was heated at 20°C 1.40°C.
The samples were left open for 48 hours in each constant temperature room at 50°C. After the storage period ended, 0.01 g of the water purifying agent was collected and added to 11 model waters adjusted to have an available chlorine concentration of 1 ppm, and the residual available chlorine concentration was measured in the same manner as in Example 1.

これらの結果を表−2に示す。These results are shown in Table-2.

ル較桝I L−アスコルビン酸ナトリウムを用いて実施例2と同様
に残留有効塩素濃度を測定した。
The residual available chlorine concentration was measured in the same manner as in Example 2 using L-sodium ascorbate.

この結果を表−2に示す。The results are shown in Table-2.

く結果〉 表−2かられかるように、本発明による浄水剤はL−ア
スコルビン酸ナトリウムよりもはるかに安定性に優れて
いる。
Results> As can be seen from Table 2, the water purifier according to the present invention has much better stability than sodium L-ascorbate.

Claims (1)

【特許請求の範囲】 1、糖及びその誘導体、アミノ酸及びその誘導体、並び
にヌクレオチド及びその誘導体からなる群の1種以上を
含有してなる飲料水用の浄水剤。 2、糖及びその誘導体がD−キシロース、D−ソルビッ
ト、エリソルビン酸、並びにエリソルビン酸のカリウム
及びナトリウム塩からなる群より選ばれたものである請
求項1記載の浄水剤。 3、アミノ酸及びその誘導体がL−アスパラギン酸ナト
リウム、DL−アラニン、L−アルギニン−L−グルタ
ミン酸塩、L−イソロイシン、グリシン、L−グルタミ
ン酸、L−グルタミン酸ナトリウム、L−システイン、
DL−スレオニン、L−スレオニン、L−テアニン、D
L−トリプトファン、L−トリプトファン、L−バリン
、L−ヒスチジン塩酸塩、L−フェニルアラニン、DL
−メチオニン、L−メチオニン、L−リジン並びにその
L−アスパラギン酸塩、塩酸塩及びL−グルタミン酸塩
からなる群より選ばれたものである請求項1記載の浄水
剤。 4、ヌクレオチドが、5′−イノシン酸ナトリウム、5
′−ウリジル酸ナトリウム、5′−グアニル酸ナトリウ
ム及び5′−シチジル酸ナトリウムからなる群より選ば
れたものである請求項1記載の浄水剤。
[Scope of Claims] 1. A water purifier for drinking water containing one or more of the group consisting of sugars and derivatives thereof, amino acids and derivatives thereof, and nucleotides and derivatives thereof. 2. The water purifier according to claim 1, wherein the sugar and its derivatives are selected from the group consisting of D-xylose, D-sorbitol, erythorbic acid, and potassium and sodium salts of erythorbic acid. 3. Amino acids and their derivatives include sodium L-aspartate, DL-alanine, L-arginine-L-glutamate, L-isoleucine, glycine, L-glutamic acid, sodium L-glutamate, L-cysteine,
DL-threonine, L-threonine, L-theanine, D
L-tryptophan, L-tryptophan, L-valine, L-histidine hydrochloride, L-phenylalanine, DL
2. The water purifier according to claim 1, which is selected from the group consisting of -methionine, L-methionine, L-lysine, and their L-aspartate, hydrochloride, and L-glutamate. 4. The nucleotide is 5'-sodium inosinate, 5
The water purifier according to claim 1, which is selected from the group consisting of sodium '-uridylate, sodium 5'-guanylate, and sodium 5'-cytidylate.
JP1006274A 1989-01-13 1989-01-13 Water purifier Expired - Fee Related JP2721531B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1006274A JP2721531B2 (en) 1989-01-13 1989-01-13 Water purifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1006274A JP2721531B2 (en) 1989-01-13 1989-01-13 Water purifier

Publications (2)

Publication Number Publication Date
JPH02187192A true JPH02187192A (en) 1990-07-23
JP2721531B2 JP2721531B2 (en) 1998-03-04

Family

ID=11633832

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1006274A Expired - Fee Related JP2721531B2 (en) 1989-01-13 1989-01-13 Water purifier

Country Status (1)

Country Link
JP (1) JP2721531B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2369622A (en) * 2000-09-01 2002-06-05 Reckitt Benckiser Cleaning method
JP2007238607A (en) * 2006-02-08 2007-09-20 Kawaken Fine Chem Co Ltd Chlorine remover
CN103466762A (en) * 2013-08-26 2013-12-25 苏州富奇诺水治理设备有限公司 Domestic waste water treatment agent containing activated silica
JP2019005736A (en) * 2017-06-22 2019-01-17 株式会社オリーブ技研 Method for producing reducible solution and reducible solution produced by the method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6227094A (en) * 1985-07-25 1987-02-05 Asahi Chem Ind Co Ltd Method for removing residual available chlorine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6227094A (en) * 1985-07-25 1987-02-05 Asahi Chem Ind Co Ltd Method for removing residual available chlorine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2369622A (en) * 2000-09-01 2002-06-05 Reckitt Benckiser Cleaning method
GB2369622B (en) * 2000-09-01 2002-11-27 Reckitt Benckiser Cleaning method
US7377945B2 (en) 2000-09-01 2008-05-27 Reckltt Bencklser (Uk) Limited Cleaning method
JP2007238607A (en) * 2006-02-08 2007-09-20 Kawaken Fine Chem Co Ltd Chlorine remover
CN103466762A (en) * 2013-08-26 2013-12-25 苏州富奇诺水治理设备有限公司 Domestic waste water treatment agent containing activated silica
JP2019005736A (en) * 2017-06-22 2019-01-17 株式会社オリーブ技研 Method for producing reducible solution and reducible solution produced by the method

Also Published As

Publication number Publication date
JP2721531B2 (en) 1998-03-04

Similar Documents

Publication Publication Date Title
Cermakova et al. Removal of cyanobacterial amino acids in water treatment by activated carbon adsorption
Bilgiç et al. Removal of chromium (VI) from polluted wastewater by chemical modification of silica gel with 4-acetyl-3-hydroxyaniline
Delval et al. Starch‐modified filters used for the removal of dyes from waste water
Ahammed et al. Sand-based filtration/adsorption media
JPH02187192A (en) Water purifying agent
JPS6295194A (en) Mineral water producing agent
JPH0710385B2 (en) Tap water deodorant
WO2004069371A1 (en) Method of reducing impurity content in aqueous salt solution
CA2391972A1 (en) Water improving agent
JP2584809B2 (en) Water purifier
JPH06206066A (en) Water purifying agent and water treatment device using the same
CN107804946B (en) The technique for handling nitrosamines disinfection by-products in drinking water
JPH01281193A (en) Water purifying agent
JPS62227489A (en) Water treatment appliance
JPH0938668A (en) Water treating agent and its manufacture thereof
US20030141247A1 (en) Methods of treating commercial grade preservatives to remove undesirable odors and flavors
CN108862770A (en) A kind of production and processing technology of pure water
WO2013152492A1 (en) Method for adsorbing phenolic chemicals from water phase
JP3090715B2 (en) Water purifier
SivaKumar et al. Prosopis juliflora carbon and commercial activated carbon in the pollutant reduction technology
JP3433267B2 (en) Alcohol quality improver and method
JPS59179034A (en) Agent for removing mutagenic substance from coffee extract liquid and filter made thereof
JPS5982340A (en) Purification of abscisic acid
WO2006021061A3 (en) System of filtering , maintaining and bacteriological and magnetized treatment for drinking water
JPS5818159B2 (en) Datsuzan Riyuen Sozai

Legal Events

Date Code Title Description
R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees