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JPS635160B2 - - Google Patents
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JPS635160B2 - - Google Patents

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Publication number
JPS635160B2
JPS635160B2 JP53160131A JP16013178A JPS635160B2 JP S635160 B2 JPS635160 B2 JP S635160B2 JP 53160131 A JP53160131 A JP 53160131A JP 16013178 A JP16013178 A JP 16013178A JP S635160 B2 JPS635160 B2 JP S635160B2
Authority
JP
Japan
Prior art keywords
parts
porous plastic
plastic
metal powder
water
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.)
Expired
Application number
JP53160131A
Other languages
Japanese (ja)
Other versions
JPS5589336A (en
Inventor
Masafumi Morya
Kazuo Hosoda
Tomio Imachi
Makoto Takai
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.)
Myoshi Oil and Fat Co Ltd
Original Assignee
Myoshi Oil and Fat Co Ltd
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 Myoshi Oil and Fat Co Ltd filed Critical Myoshi Oil and Fat Co Ltd
Priority to JP16013178A priority Critical patent/JPS5589336A/en
Publication of JPS5589336A publication Critical patent/JPS5589336A/en
Publication of JPS635160B2 publication Critical patent/JPS635160B2/ja
Granted legal-status Critical Current

Links

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  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Description

【発明の詳細な説明】 本発明は、プラスチツクに金属粉末または金属
粉末と粉末カーボンを分散させてなる多孔質プラ
スチツクを用いた水の処理方法に関するものであ
り、その目的とするところは本剤を水と接触させ
ることにより、細菌もしくは微生物などによる障
害、たとえばスライムによる冷却器の運転効率の
低下、産業廃水の腐敗および廃水による藻類の増
殖、臭気物質による環境悪化などを未然に防止せ
んとするものである。 金属イオンがある種の微生物や生物に対して、
強い毒性、殺菌作用もしくは増殖抑制作用を有す
ることは周知の事実である。 たとえば、水槽に繁茂する緑藻の抑制に微量の
硫酸銅を添加することが行われてきた。 本発明者らは、上水、下水および廃水中の藻類
および細菌などを、安全にしかも経済的に効率よ
く殺菌もしくは除去する方法について鋭意研究の
結果、多孔質プラスチツクにより極めて効率よく
安全にこれらを殺菌もしくは除去できることを見
い出し本発明に到達した。 すなわち本発明は、プラスチツクに金属粉末ま
たは金属粉末と粉末カーボンを混合し、発泡剤の
存在下に発泡して得られる多孔質プラスチツクを
上水、下水および廃水に接触させて処理を行な
い、水中の細菌を殺菌する、多孔質プラスチツク
を用いた水の処理方法である。 本発明の多孔質プラスチツクは、次の方法によ
り製造することができる。すなわち、分解型発泡
剤の分解温度が成形温度以下の場合あらかじめプ
ラスチツク、金属粉末または金属粉末と粉末カー
ボンおよび発泡剤を混合し、成形と同時に多孔質
プラスチツクが得られるが、発泡剤の分解温度が
成形温度以上の場合には、前記混合物を成形加工
した後、発泡加工することにより多孔質プラスチ
ツクが得られる。またさらに溶剤型発泡剤を使用
する場合にはプラスチツク、金属粉末または金属
粉末と粉末カーボンをあらかじめ混合し、成形時
に発泡剤を圧入することによつても多孔質プラス
チツクが得られ、この方法によれば発泡倍率の高
い製品が得られる。また、発泡倍率の高い製品を
得るには、さらに放射線架橋もしくは架橋剤をプ
ラスチツクに添加することにより可能である。さ
らにプラスチツクに金属粉末または金属粉末と粉
末カーボンもしくは発泡剤を均一に分散させるた
めには界面活性剤を用いた方が好ましい。界面活
性剤としてはステアリン酸、オレイン酸、ラウリ
ン酸、リノール酸、パルミチン酸およびこれらの
塩類(Na、Li、K、Ca、Mg)、さらにソルビタ
ン脂肪酸エステルおよびそのエチレンオキサイド
付加体などを添加してやれば良い。 成形方法としては押出し成型、カレンダー成
型、コンベアベルトキヤスチング法などが挙げら
れる。 本発明で使用する金属粉末としては、金、銀、
白金、パラジウム、銅、悪鉛、ニツケル、コバル
トなどの粉末があり、平均粒子0.05μ〜30μの範囲
の金属粉末が好ましい。プラスチツクに対する金
属粉末または金属粉末と粉末カーボンの添加量は
0.1〜500wt%であるが、2〜50wt%が好ましい。 本発明に使用する粉末カーボンとしては、アセ
チレンブラツク、フアーネスブラツク、チヤンネ
ルブラツク、サーマルブラツク、ランプブラツク
および粉末活性炭などがある。 本発明で使用する発泡剤としては、分解形発泡
剤として重炭酸ソーダ、炭酸アンモニウム、アゾ
ジカルボンアミド、アゾビスイソブチロニトリ
ル、ジアゾアミノベンゼン、N,N′―ジメチル
―N,N′―ジニトロソテレフタルアミド、N,
N′―ジニトロソペンタメチレンテトラミン、ベ
ンゼンスルホニルヒドラジツド、トルエン―(4)―
スルホニル―ヒドラジツド、4,4′―オキシビス
(ベンゼンスルホニル―ヒドラジツド)などがあ
り、これらに限定されるものではない。添加量は
プラスチツクに対して0.1〜10wt.%が適当であ
る。溶剤型発泡剤としてはプロパン、ブタン、ネ
オペンタン、ヘプタン、イソヘキサン、イソヘプ
タン、ヘプタン、ベンゼン、トルエン、塩化メチ
レン、二塩化エタン、二塩化五フツ化エタン、三
塩化フツ化メタン、三塩化三フツ化エタン、など
が使用され、これらに限定されない。 また、本発明で使用するプラスチツクとしては
ポリ塩化ビニル、ポリエチレン、ポリプロピレ
ン、ポリスチレン、ABS樹脂、ポリアミド、ア
クリル樹脂、エポキシ樹脂、フエノール樹脂、ユ
リア樹脂などがあり、これらに限定されない。 本発明において多孔質プラスチツクと、上水、
下水および廃水(以下被処理水と称する)とを接
触させる方法としては、例えば被処理水中に多孔
質プラスチツクを浸漬するか、浸漬しさらに撹拌
するバツチ方式、多孔質プラスチツクを充填した
カラムに被処理水を通過せしめるカラム方式等が
挙げられるがバツチ方式よりもカラム方式が好ま
しい。カラム方式には一過方式と環循方式がある
が、いずれの方式でもよく、さらに通液方法とし
て上向流、下向流のいずれの方法も採用できる。
カラム方式においては、通液速度をSV0.1〜50、
好ましくは1〜10で通液し接触させる方法、ある
いは被処理水を循環させて接触させる方法等いず
れも用いることができる。又、殺菌能力を高める
ために被処理水を30〜80℃に加温し、同温度で多
孔質プラスチツクに接触させても良い。 上記のようにして多孔質プラスチツクと接触さ
せることにより、殺菌された処理水が得られる。 以下実施例により本発明を具体的に説明する
が、これらの実施例は本発明を何等限定するもの
ではない。 実施例 1 ポリプロピレン500部、銀粉末(平均粒径30μ)
70部、粉末活性炭30部、アゾジカルボンアミド15
部およびステアリン酸カルシウム5部をミキサー
で良く混合し、30mm押出成形機でペレツトとし多
孔質プラスチツク(A)を得た。成形条件は回転数
60rpmでホツパー出口温度(C1)150℃、ルーダ
ー中央温度(C2)200℃、ダイ温度(D)200℃で行
つた。 実施例 2 ポリエチレン500部、銀粉末(平均粒径30μ)
100部、アゾビスイソブチロニトリル7部および
ステアリン酸カルシウム3部およびベンゾイルパ
ーオキシド1部をミキサーで良く混合し、30mm押
出成形機でペレツトとし多孔質プラスチツク(B)を
得た。成形条件は回転数60rpmでC1:140℃、
C2:150℃、D:150℃で行なつた。 実施例 3 ポリエチレン500部にヘキサン50部を含浸させ、
アゾビスイソブチロニトリル2.5部、ステアリン
酸カルシウム3部、および銅粉末(平均粒径
10μ)150部、アセチレンブラツク100部をミキサ
ーで良く混合し、実施例1と同様に押し出し成形
し、ペレツトとし、多孔質プラスチツク(C)を得
た。 実施例 4 2,2―ビス(P―1・2エポキシプロポキシ
フエニル)プロパン(エポキシ当量:185)100
部、ジエチレントリアミン12部、銀粉末(平均粒
径:30μ)150部、フアーネスブラツク100部、ト
ルエン10部、ベンゼンスルホニルヒドラジド3
部、ソルビタンモノラウレートの酸化エチレン15
モル付加体0.1部をミキサーで良く混合し、混合
液を0.1%ポリビニルアルコール水溶液2000部に
撹拌下、60℃で添加し、分散させその温度で5時
間反応を続け、90℃で2時間反応を行ない、さら
に95〜100℃で1時間熟成を行なうと、10〜48メ
ツシユ発泡ビーズが得られ、多孔質プラスチツク
(D)を得た。 実施例 5 ポリ塩化ビニル300部、亜鉛粉末(平均径10〜
30μ)30部、アゾジカルボンアミド9部、および
ステアリン酸カルシウム3部をミキサーで良く混
合し、カレンダロールで成形し厚さ0.5mmの発泡
していないシート状樹脂を得たが、このものを再
加熱(200℃)することにより多孔質プラスチツ
クシートを得た。さらに得られたシート状樹脂を
約10メツシユに粉砕し、多孔質プラスチツク(E)を
得た。 実施例 6 実施例1〜5で得られた多孔質プラスチツク
(A)、(B)、(C)、(D)、(E)をそれぞれ100mlずつ内径25
mmのカラムに充填し、SV(空間速度)1で第1表
に示す試験液を通水した処理結果を第1表に示
す。 細菌数の測定は食品衛生検査指針(社団法人日
本食品衛生協会編)の一般生菌数測定法に準じて
行なつた。 【表】
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a water treatment method using porous plastic made by dispersing metal powder or metal powder and powdered carbon into plastic, and its purpose is to By contacting with water, it is intended to prevent problems caused by bacteria or microorganisms, such as a reduction in operating efficiency of coolers due to slime, decay of industrial wastewater and the growth of algae due to wastewater, and environmental deterioration due to odor substances. It is. Metal ions are harmful to certain microorganisms and organisms.
It is a well-known fact that it has strong toxicity, bactericidal action, or growth-inhibiting action. For example, small amounts of copper sulfate have been added to suppress green algae growing in aquariums. The inventors of the present invention have conducted extensive research into methods for safely, economically and efficiently sterilizing or removing algae and bacteria in water, sewage, and wastewater. We have discovered that it can be sterilized or removed, and have arrived at the present invention. That is, the present invention involves mixing plastic with metal powder or metal powder and powdered carbon, and foaming the resulting porous plastic in the presence of a foaming agent. This is a water treatment method that uses porous plastic to kill bacteria. The porous plastic of the present invention can be manufactured by the following method. In other words, if the decomposition temperature of the decomposable blowing agent is below the molding temperature, a porous plastic can be obtained by mixing plastic, metal powder, or metal powder with powdered carbon and a blowing agent at the same time as molding. If the temperature is above the molding temperature, a porous plastic can be obtained by molding the mixture and then foaming it. Furthermore, when using a solvent-based blowing agent, porous plastics can also be obtained by pre-mixing plastic, metal powder, or metal powder and powdered carbon, and press-fitting the blowing agent during molding. A product with a high foaming ratio can be obtained. Furthermore, products with a high expansion ratio can be obtained by further radiation crosslinking or by adding a crosslinking agent to the plastic. Further, it is preferable to use a surfactant in order to uniformly disperse the metal powder or metal powder and powdered carbon or foaming agent in the plastic. Stearic acid, oleic acid, lauric acid, linoleic acid, palmitic acid and their salts (Na, Li, K, Ca, Mg), as well as sorbitan fatty acid ester and its ethylene oxide adduct, can be added as surfactants. good. Examples of the molding method include extrusion molding, calendar molding, and conveyor belt casting. The metal powder used in the present invention includes gold, silver,
There are powders of platinum, palladium, copper, lead, nickel, cobalt, etc., and metal powders with an average particle size in the range of 0.05μ to 30μ are preferred. The amount of metal powder or metal powder and powdered carbon added to plastic is
The content ranges from 0.1 to 500 wt%, preferably from 2 to 50 wt%. Powdered carbon used in the present invention includes acetylene black, furnace black, channel black, thermal black, lamp black, and powdered activated carbon. The blowing agents used in the present invention include decomposed blowing agents such as sodium bicarbonate, ammonium carbonate, azodicarbonamide, azobisisobutyronitrile, diazoaminobenzene, and N,N'-dimethyl-N,N'-dinitrosoterephthal. Amide, N,
N'-Dinitrosopentamethylenetetramine, benzenesulfonylhydrazide, toluene-(4)-
Examples include, but are not limited to, sulfonyl hydrazide and 4,4'-oxybis(benzenesulfonyl hydrazide). The appropriate amount of addition is 0.1 to 10 wt.% based on the plastic. Solvent-type blowing agents include propane, butane, neopentane, heptane, isohexane, isoheptane, heptane, benzene, toluene, methylene chloride, ethane dichloride, pentafluoroethane dichloride, methane trifluoride trichloride, and ethane trifluoride trichloride. , etc. are used, but are not limited to these. Plastics used in the present invention include, but are not limited to, polyvinyl chloride, polyethylene, polypropylene, polystyrene, ABS resin, polyamide, acrylic resin, epoxy resin, phenolic resin, and urea resin. In the present invention, porous plastic, tap water,
Methods for bringing sewage and wastewater (hereinafter referred to as water to be treated) into contact include, for example, immersing porous plastic in the water to be treated, a batch method in which porous plastic is immersed and then stirred, and a method in which porous plastic is brought into contact with the water to be treated in a column filled with porous plastic. A column method that allows water to pass through may be used, but a column method is preferable to a batch method. Column systems include a transient system and a circulation system, but either system may be used, and either an upward flow or a downward flow method can be adopted as the liquid passing method.
In the column method, the liquid flow rate is SV0.1~50,
Preferably, any method such as a method in which the water is passed through and brought into contact at a ratio of 1 to 10, or a method in which water to be treated is circulated and brought into contact can be used. Further, in order to enhance the sterilization ability, the water to be treated may be heated to 30 to 80°C and brought into contact with porous plastic at the same temperature. By contacting the porous plastic as described above, sterilized treated water is obtained. EXAMPLES The present invention will be specifically explained below with reference to Examples, but these Examples are not intended to limit the present invention in any way. Example 1 500 parts of polypropylene, silver powder (average particle size 30μ)
70 parts, powdered activated carbon 30 parts, azodicarbonamide 15
1 part and 5 parts of calcium stearate were thoroughly mixed in a mixer and formed into pellets in a 30 mm extruder to obtain porous plastic (A). Molding conditions are rotation speed
The test was conducted at 60 rpm with a hopper outlet temperature (C 1 ) of 150°C, a router center temperature (C 2 ) of 200°C, and a die temperature (D) of 200°C. Example 2 500 parts of polyethylene, silver powder (average particle size 30μ)
100 parts of azobisisobutyronitrile, 3 parts of calcium stearate, and 1 part of benzoyl peroxide were thoroughly mixed in a mixer and formed into pellets in a 30 mm extruder to obtain porous plastic (B). The molding conditions were C 1 : 140℃ at a rotation speed of 60 rpm.
C2 : 150°C, D: 150°C. Example 3 500 parts of polyethylene was impregnated with 50 parts of hexane,
2.5 parts azobisisobutyronitrile, 3 parts calcium stearate, and copper powder (average particle size
10μ) and 100 parts of acetylene black were thoroughly mixed in a mixer and extruded in the same manner as in Example 1 to form pellets to obtain porous plastic (C). Example 4 2,2-bis(P-1.2 epoxypropoxyphenyl)propane (epoxy equivalent: 185) 100
parts, diethylenetriamine 12 parts, silver powder (average particle size: 30μ) 150 parts, furnace black 100 parts, toluene 10 parts, benzenesulfonyl hydrazide 3 parts
15 parts, sorbitan monolaurate of ethylene oxide
Mix 0.1 part of the molar adduct well with a mixer, add the mixed solution to 2000 parts of 0.1% polyvinyl alcohol aqueous solution at 60°C with stirring, disperse and continue the reaction at that temperature for 5 hours, and then at 90°C for 2 hours. By further aging at 95-100°C for 1 hour, foamed beads with 10-48 meshes were obtained, forming a porous plastic material.
I got (D). Example 5 300 parts of polyvinyl chloride, zinc powder (average diameter 10~
30 parts of 30 μ), 9 parts of azodicarbonamide, and 3 parts of calcium stearate were mixed well in a mixer and molded with a calender roll to obtain an unfoamed sheet resin with a thickness of 0.5 mm, which was then reheated. (200°C) to obtain a porous plastic sheet. Furthermore, the obtained sheet-shaped resin was crushed into about 10 meshes to obtain porous plastic (E). Example 6 Porous plastics obtained in Examples 1 to 5
100ml each of (A), (B), (C), (D), and (E) with an inner diameter of 25
Table 1 shows the treatment results in which the test solution shown in Table 1 was packed into a 1 mm column and passed through it at an SV (space velocity) of 1. The number of bacteria was measured according to the general method for measuring the number of viable bacteria in the Food Sanitation Inspection Guidelines (edited by the Japan Food Hygiene Association). 【table】

Claims (1)

【特許請求の範囲】[Claims] 1 プラスチツクに金属粉末または金属粉末と粉
末カーボンを混合し、発泡剤の存在下に発泡して
得られる多孔質プラスチツクを上水、下水および
廃水に接触させて処理を行ない、水中の細菌を殺
菌することを特徴とする多孔質プラスチツクを用
いた水の処理方法。
1. Mix metal powder or metal powder and powdered carbon with plastic and foam it in the presence of a foaming agent. The resulting porous plastic is then brought into contact with tap water, sewage, and wastewater to sterilize bacteria in the water. A water treatment method using porous plastic characterized by:
JP16013178A 1978-12-27 1978-12-27 Porous plastic with bactericidal activity Granted JPS5589336A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16013178A JPS5589336A (en) 1978-12-27 1978-12-27 Porous plastic with bactericidal activity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16013178A JPS5589336A (en) 1978-12-27 1978-12-27 Porous plastic with bactericidal activity

Publications (2)

Publication Number Publication Date
JPS5589336A JPS5589336A (en) 1980-07-05
JPS635160B2 true JPS635160B2 (en) 1988-02-02

Family

ID=15708532

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16013178A Granted JPS5589336A (en) 1978-12-27 1978-12-27 Porous plastic with bactericidal activity

Country Status (1)

Country Link
JP (1) JPS5589336A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007212125A (en) * 2006-01-11 2007-08-23 Matsushita Electric Ind Co Ltd Humidifier

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