JPH03161408A - Method and filtering material for cleaning water - Google Patents
Method and filtering material for cleaning waterInfo
- Publication number
- JPH03161408A JPH03161408A JP29927689A JP29927689A JPH03161408A JP H03161408 A JPH03161408 A JP H03161408A JP 29927689 A JP29927689 A JP 29927689A JP 29927689 A JP29927689 A JP 29927689A JP H03161408 A JPH03161408 A JP H03161408A
- Authority
- JP
- Japan
- Prior art keywords
- water
- germanium
- porous material
- filter
- germanium compound
- 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 29
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000000463 material Substances 0.000 title claims description 18
- 238000004140 cleaning Methods 0.000 title abstract 5
- 238000001914 filtration Methods 0.000 title 1
- 150000002291 germanium compounds Chemical class 0.000 claims abstract description 11
- 239000011148 porous material Substances 0.000 claims abstract description 8
- 238000000746 purification Methods 0.000 claims description 12
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium oxide Inorganic materials O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 abstract description 14
- 241000206761 Bacillariophyta Species 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- 241000195493 Cryptophyta Species 0.000 abstract description 6
- 229910052732 germanium Inorganic materials 0.000 abstract description 6
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 abstract description 6
- 239000000919 ceramic Substances 0.000 abstract description 3
- 239000011435 rock Substances 0.000 abstract description 3
- 239000003365 glass fiber Substances 0.000 abstract description 2
- PVADDRMAFCOOPC-UHFFFAOYSA-N oxogermanium Chemical compound [Ge]=O PVADDRMAFCOOPC-UHFFFAOYSA-N 0.000 abstract description 2
- 230000002353 algacidal effect Effects 0.000 abstract 1
- 229940119177 germanium dioxide Drugs 0.000 description 6
- 239000010457 zeolite Substances 0.000 description 6
- 229910021536 Zeolite Inorganic materials 0.000 description 5
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 5
- 241000251468 Actinopterygii Species 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000013535 sea water Substances 0.000 description 4
- 238000005245 sintering Methods 0.000 description 3
- 235000014653 Carica parviflora Nutrition 0.000 description 2
- 241000306250 Chromis chromis Species 0.000 description 2
- 241000243321 Cnidaria Species 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 238000006424 Flood reaction Methods 0.000 description 1
- 241000237502 Ostreidae Species 0.000 description 1
- 241001465382 Physalis alkekengi Species 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003619 algicide Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 230000001098 anti-algal effect Effects 0.000 description 1
- 229940088710 antibiotic agent Drugs 0.000 description 1
- 238000009360 aquaculture Methods 0.000 description 1
- 244000144974 aquaculture Species 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 150000002290 germanium Chemical class 0.000 description 1
- 230000009036 growth inhibition Effects 0.000 description 1
- 239000001963 growth medium Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 239000010899 old newspaper Substances 0.000 description 1
- 235000020636 oyster Nutrition 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 239000000419 plant extract Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000941 radioactive substance Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- -1 tin and copper Chemical class 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Landscapes
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
Description
【発明の詳細な説明】
Ｌ皇圭立丑凰立互
本発明は、微細藻類、特に珪藻に対して良好な抗藻作用
を有する水浄化方法および水浄化用ｐ材に関する．
災来夏技先
藻類の多量発生による障害は、湖沼の富栄養化、赤潮の
発生、養殖場での水質悪化など多方面で起こっている。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a water purification method and a p-material for water purification that have a good antialgae effect against microalgae, especially diatoms. Problems caused by large numbers of algae outbreaks are occurring in a variety of ways, including eutrophication of lakes, red tide outbreaks, and deterioration of water quality at fish farms.
なかでも珪藻の発生は、ビルクーリングタワーなどの熱
交換器類に付着すると熱交換能の低下を招き、また，水
槽中に発生すると水槽壁面や水そのものの汚れ、あるい
はｒ材の目詰りの原因にもなる．
従来から、藻類の発生を抑制したり，殺して除去するた
めの抗藻剤、殺藻剤としては多くの物質が開発されてお
り、スズ、銅等の無機金属を主体としたもの、抗生物質
、スルホンイミド等の有機合成品などが提案されている
。しかし、多量使用に対する人体への安全性については
十分とは言えず、使用環境の生態系に及ぼす影響にも多
くの問題を抱えている．
一方，安全性が高く、しかも生分解性に優れているとさ
れる植物抽出物を抗藻剤として用いる試みも為されてい
るが、効果の点では十分と言い難い．
ところで、藻類の培養研究において、培地に二酸化ゲル
マニウムを添加することにより，珪藻の増殖を抑えられ
ることが知られている（書籍「藻類研究法」、千原光雄
、西澤一俊編集、共立出版発行、Ｐ６５〜７２）。しか
し、通常使用する二酸化ゲルマニウムは水に難溶で、特
に海水に対してはｉｆｆ中５Ｂ以下の溶解性であるため
、同書籍の３８〜３９頁に記載されているように、アル
カリに溶かしたのち酸で中和して１％溶液を作る等の特
殊な処理の必要がある。このため、産業上大規模に利用
したり、家庭用水槽の汚れ防止などに利用するには不向
きである。In particular, if diatoms adhere to heat exchangers such as building cooling towers, it will reduce heat exchange performance, and if they occur in an aquarium, they can cause stains on the tank walls and water itself, or clogging of R materials. It also becomes. Many substances have been developed as anti-algae agents and algaecides to suppress or kill the growth of algae, including those based on inorganic metals such as tin and copper, and antibiotics. , sulfonimides, and other organic synthetic products have been proposed. However, it cannot be said that the safety for the human body when used in large quantities is sufficient, and there are many problems with the impact on the ecosystem of the environment in which it is used. On the other hand, attempts have been made to use plant extracts, which are said to be highly safe and have excellent biodegradability, as antialgal agents, but their effectiveness is far from satisfactory. By the way, in algae culture research, it is known that the growth of diatoms can be suppressed by adding germanium dioxide to the culture medium. P65-72). However, germanium dioxide, which is commonly used, is sparingly soluble in water, especially in seawater, where the solubility is less than 5B in IF, so as described on pages 38 to 39 of the same book, germanium dioxide is dissolved in alkali. Special treatment is then required, such as neutralization with acid to create a 1% solution. For this reason, it is unsuitable for large-scale industrial use or for use in preventing contamination of domestic aquariums.
また、塗料中にゲルマニウム或分を含む岩石微粉末を混
入し、放射性物質の作用により貝、魚、藻等の付着を防
止した船舶用塗料が報告されている（特開昭５３−５７
２３１号公報），，シかし、水の浄化システムにおける
ゲルマニウムの利用については、何ら言及されていない
．
が しようとする課
本発明は、実施が容易で，しかも浄化効果に優れた水の
浄化システムを提供するものである。In addition, a marine paint has been reported in which fine rock powder containing germanium is mixed into the paint to prevent the adhesion of shellfish, fish, algae, etc. by the action of radioactive substances (Japanese Patent Laid-Open No. 53-57
However, there is no mention of the use of germanium in water purification systems. OBJECTS OF THE INVENTION The present invention provides a water purification system that is easy to implement and has an excellent purification effect.
見奨立豊底
本発明の水の浄化方法は、ゲルマニウム化合物を含む多
孔質体と水とを接触させることを特徴とする。The water purification method of the present invention is characterized by bringing a porous body containing a germanium compound into contact with water.
また、本発明の水浄化用Ｐ材は、上記の多孔質体から成
ることを特徴とする。Moreover, the P material for water purification of the present invention is characterized by being made of the above-mentioned porous body.
以下、本発明についてさらに詳細に説明する．ゲルマニ
ウム化合物としては、ゲルマニウム、酸化ゲルマニウム
（Ｇ ｅ Ｏ．）、ゲルマニウム元素を含む岩石などが
用いられる。The present invention will be explained in more detail below. As the germanium compound, germanium, germanium oxide (G e O.), rock containing the germanium element, etc. are used.
本発明の多孔質体は，担体として多孔性セラミックス，
スポンジ，発泡プラスチックス等の有機質多孔体，ガラ
ス繊維，合成繊維等の繊維集合体などの水不溶性多孔質
体を用いて、これにゲルマニウム化合物を担持させるこ
とにより得られる．さらに、ゲルマニウム化合物をゼオ
ライトに担持させてもよい。The porous body of the present invention uses porous ceramics as a carrier,
It can be obtained by supporting a germanium compound on a water-insoluble porous material such as an organic porous material such as sponge or foamed plastic, or a fiber aggregate such as glass fiber or synthetic fiber. Furthermore, a germanium compound may be supported on zeolite.
ゼオライトとしては、特に種類を限定されず，Ａ型、Ｘ
型，Ｙ型などがいずれも使用できる。The type of zeolite is not particularly limited, and type A, type
Both type and Y type can be used.
また、特開昭６３−２２０８７４号公報に記載されてい
る、下記３或分比（酸化物として）で表わされるアルミ
ノ珪酸塩のような金属置換ゼオライトも使用できる。Further, metal-substituted zeolites such as aluminosilicates represented by the following three proportions (as oxides) described in JP-A No. 63-220874 can also be used.
ＳｉＯよ＝５〜８０モル％
ＭＯユ：５〜６５モル％
？１■Ｏ，：０〜６０モル％
（Ｍ：亜鉛，銅，銀、コバルト，ニッケル、鉄，チタン
、バリウム、スズ
またはジルコニウム
ｎ二金属の原子価）
さらに，同公報に記載されている複分解法に準拠して、
原料の一部として水溶性ゲルマニウム塩を用いて製造し
た、上記ＭｏｆＬとしてＧｅＯ■を含有せしめたゲルマ
ニウム置換ゼオライトや、Ａ型ゼオライト（ナトリウム
塩）の一部をＧｅイオンでイオン交換したゲルマニウム
置換ゼオライトを用いることもできる。SiO = 5 to 80 mol% MOY: 5 to 65 mol%? 1 O,: 0 to 60 mol% (M: valence of zinc, copper, silver, cobalt, nickel, iron, titanium, barium, tin or zirconium n bimetallic) Furthermore, double decomposition method described in the same publication In accordance with
Germanium-substituted zeolite containing GeO■ as the MofL, which is produced using water-soluble germanium salt as part of the raw material, and germanium-substituted zeolite in which a part of A-type zeolite (sodium salt) is ion-exchanged with Ge ions. It can also be used.
セラミックスを担体として用いてｒ材を製造する場合の
一例を挙げると次の通りである。すなわち、アルミナ、
珪酸，炭酸カルシウム等に二酸化ゲルマニウムを加え、
さらに古紙等の孔形成材料を添加してスラリー化し．十
分に混練したのち焼結を行なう。焼結条件は特に限定さ
れないが、通常１０００〜１５００℃、０．５〜３時間
で十分であり、必要に応じて得られた多孔質焼結物を造
粒あるいは或形しＰ材として用いる。添加するゲルマニ
ウム化合物の量は、仕込み量で０．０１〜２０重量％，
より好ましくは０．１〜１０重量％である，
本発明の枦材の使用方法は、直接水に浸漬して水槽の底
面に敷設し、底面で枦過を行なう方法；水槽、池等の浄
化対象物の外部に別途戸過槽を設け，池等の水をｒ過槽
に循環させる方法；ｒ材をカラムに充填し、処理対象水
をカラムに導く方法等、Ｐ材としての機能が果たせれば
、特に問わない。An example of manufacturing R material using ceramics as a carrier is as follows. That is, alumina,
Adding germanium dioxide to silicic acid, calcium carbonate, etc.
Furthermore, a pore-forming material such as waste paper is added to form a slurry. After sufficient kneading, sintering is performed. Sintering conditions are not particularly limited, but usually 1000 to 1500°C for 0.5 to 3 hours is sufficient, and if necessary, the obtained porous sintered product is granulated or shaped and used as the P material. The amount of germanium compound added is 0.01 to 20% by weight based on the amount charged.
More preferably 0.1 to 10% by weight, the method of using the oak wood of the present invention is to directly immerse it in water, lay it on the bottom of an aquarium, and pass through the bottom; purification of aquariums, ponds, etc. A method in which a separate tank is installed outside the target object and water from a pond is circulated through the tank; a method in which R material is filled in a column and water to be treated is guided to the column, etc., can fulfill its function as a P material. If so, there are no particular questions.
海水での使用は、硝酸塩の蓄積による海水の酸性化を防
ぐ目的で、サンゴ砂、カキ殻などと併用することが望ま
しい．
また，ＦＩ材としての使用ではなく、浄化対象水中に本
発明の多孔質体を浸漬することによっても、水の浄化を
行なうことができる．この一例を挙げれば，天然玉石状
や灯籠等の飾り物状に成形して家庭用の飼育水槽に浸漬
したり、魚礁に成形して“いけす″、養殖池に浸漬する
．見』レリ運泉
本発明によれば、ゲルマニウム化合物を含む多孔質体を
用いることにより，珪藻の発生を抑制して水の浄化を行
なうことができる。When used in seawater, it is recommended to use it in combination with coral sand, oyster shells, etc. to prevent acidification of the seawater due to the accumulation of nitrates. In addition, water can be purified by immersing the porous material of the present invention in water to be purified, instead of using it as an FI material. For example, they can be shaped into natural boulders, lanterns, and other decorations and immersed in domestic aquariums, or shaped into fish reefs and immersed in "fish tanks" or aquaculture ponds. According to the present invention, by using a porous body containing a germanium compound, it is possible to suppress the growth of diatoms and purify water.
特に，上記多孔質体をｒ材として使用するときは．Ｐ材
が本来的に具えている水の浄化作用と相まって優れた浄
化効果が発揮でき、また、コストの増加やスペース的な
圧迫を招くこともない。Especially when using the above porous material as an R material. Coupled with the water purification effect that P material inherently has, an excellent purification effect can be exhibited, and there is no increase in cost or space pressure.
実施例１
（１）Ｐ材の調製
シャモット４０ｗｔ％、木節粘土５０ｗｔ％、炭酸カル
シウム１０ｗｔ％の組成に二酸化ゲルマニウムを外割で
１％１ｔ％になるよう加えトータル１０１０ｇとした。Example 1 (1) Preparation of P material Germanium dioxide was added to a composition of 40 wt% chamotte, 50 wt% Kibushi clay, and 10 wt% calcium carbonate to give a total of 1010 g.
これに少量の水を加えスラリー化した後、一晩よく練合
し、吸引Ｐ過により水を除き、新聞古紙を混合して１２
００℃１時間焼結した。Add a small amount of water to this to make a slurry, mix well overnight, remove water by suction P filter, mix old newspaper and
Sintering was carried out at 00°C for 1 hour.
（２）Ｐ材の珪藻増殖抑制試験
上記Ｐ材５００ｇにサンゴ砂２０００ｇを混ぜ、底面ｒ
過用フィルターを敷いた水槽（４５ｃｍＸ ３０ｃｍ
Ｘ ３０ｃｍ）の底面にセットした。この中に３５氾の
海水を入れ、ヒータにより水温を２５℃に保ち，エアリ
フトタイプによる循環Ｐ過を開始した。２４時間運転し
た後、体長約５ｃｍのデバスズメダイ６匹を入れた。(2) Diatom growth inhibition test on P material Mix 2000 g of coral sand with 500 g of the above P material, and
Aquarium with filter (45cm x 30cm)
x 30 cm). 35 floods of seawater was put into this tank, the water temperature was maintained at 25°C using a heater, and circulation P was started using an air lift type system. After 24 hours of operation, six damselfish, approximately 5 cm in length, were placed in the tank.
また、珪藻の増殖を早めるために海産性付着珪藻である
Ｎｉｔｚｃｈｉａ ｓｐ．を１０”ｃｅｌｌｓ／ｎ＋
Ｑになるよう添加し、経口的に珪藻の付着具合を観察し
た。In addition, Nitzchia sp., a marine periphyton, is used to accelerate the growth of diatoms. 10”cells/n+
The amount of diatoms was added to the solution at a concentration of Q, and the degree of adhesion of diatoms was observed orally.
また、コントロールとして、二酸化ゲルマニウムを除い
た戸材を用いて同様な試験を行なった。In addition, as a control, a similar test was conducted using a door material that did not contain germanium dioxide.
その結果，コントロール水槽は、試験開始後ｌ週間目よ
り底面、壁面に珪藻の付着が観察され始め、１７日目に
はその量がピークに達し、その後も継続的に多少の盛衰
を繰り返しながら付着がｗ４察された．
一方、本発明のｒ材を用いた場合、ほとんど珪藻の付着
ばＲ察されず、水の濁りも発生しなかった。As a result, diatoms began to be observed on the bottom and walls of the control aquarium one week after the start of the test, and the amount reached its peak on the 17th day. was observed w4. On the other hand, when the R material of the present invention was used, almost no diatom adhesion was observed, and no water turbidity occurred.
なお、 デバスズメダイの生育には何ら 影響はなかった。In addition, There is nothing about the growth of Devas damselfish. There was no effect.
Claims (1)
触させることを特徴とする水浄化方法。 ２、ゲルマニウム化合物を含有する多孔質体からなるこ
とを特徴とする水浄化用ろ材。[Claims] 1. A water purification method characterized by bringing a porous body containing a germanium compound into contact with water. 2. A filter material for water purification characterized by being made of a porous material containing a germanium compound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29927689A JPH03161408A (en) | 1989-11-16 | 1989-11-16 | Method and filtering material for cleaning water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29927689A JPH03161408A (en) | 1989-11-16 | 1989-11-16 | Method and filtering material for cleaning water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03161408A true JPH03161408A (en) | 1991-07-11 |
Family
ID=17870452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29927689A Pending JPH03161408A (en) | 1989-11-16 | 1989-11-16 | Method and filtering material for cleaning water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03161408A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0634099A1 (en) * | 1993-07-15 | 1995-01-18 | Senju Pharmaceutical Co., Ltd. | Method for preventing emergence of algae and antialgal composition |
| US6537939B1 (en) * | 2000-10-20 | 2003-03-25 | Anthony Reid Harvey | Porous grog composition, water purification device containing the porous grog and method for making same |
| US7491330B2 (en) | 2000-10-20 | 2009-02-17 | Anthony Reid Harvey | Silver chloride treated water purification device containing the porous grog and method for making same |
-
1989
- 1989-11-16 JP JP29927689A patent/JPH03161408A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0634099A1 (en) * | 1993-07-15 | 1995-01-18 | Senju Pharmaceutical Co., Ltd. | Method for preventing emergence of algae and antialgal composition |
| US5518990A (en) * | 1993-07-15 | 1996-05-21 | Senju Pharmaceutical Co., Ltd. | Method for preventing emergence of algae and antialgal composition |
| US6537939B1 (en) * | 2000-10-20 | 2003-03-25 | Anthony Reid Harvey | Porous grog composition, water purification device containing the porous grog and method for making same |
| US7491330B2 (en) | 2000-10-20 | 2009-02-17 | Anthony Reid Harvey | Silver chloride treated water purification device containing the porous grog and method for making same |
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