JPH07155750A - Hot-water sterilization method for water purifier - Google Patents
Hot-water sterilization method for water purifierInfo
- Publication number
- JPH07155750A JPH07155750A JP30664193A JP30664193A JPH07155750A JP H07155750 A JPH07155750 A JP H07155750A JP 30664193 A JP30664193 A JP 30664193A JP 30664193 A JP30664193 A JP 30664193A JP H07155750 A JPH07155750 A JP H07155750A
- Authority
- JP
- Japan
- Prior art keywords
- water
- hot water
- water purifier
- purifier
- hot
- 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
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Water Treatment By Sorption (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、水道水等の浄化に用い
られる浄水器に関する。より詳しくは、一旦浄化された
水が細菌等により再汚染されるのを防止した浄水器の温
水殺菌方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purifier used for purifying tap water and the like. More specifically, the present invention relates to a method for sterilizing hot water of a water purifier that prevents water that has been once purified from being re-contaminated by bacteria or the like.
【0002】[0002]
【従来の技術】近年、中空糸膜等の微細孔を有した濾過
膜を用いたフィルターを活性炭と併用した濾過機構を有
する浄水器が注目を浴び水道水等の浄化に広く用いられ
てきている。2. Description of the Related Art In recent years, a water purifier having a filtration mechanism in which a filter using a filtration membrane having fine pores such as a hollow fiber membrane is used in combination with activated carbon has attracted attention and has been widely used for purification of tap water. .
【0003】このようなフィルターは、中空糸膜を集束
し、該集束端を中空糸膜の開口端を閉塞させないように
してポリウレタン樹脂等のポッティング材によって固定
することにより、中空糸膜の中空部を気密に仕切るとと
もに筒状ケース本体に固定されており、活性炭層と連接
した状態で濾過部が形成されている。In such a filter, the hollow fiber membrane is converged, and the converging end is fixed by a potting material such as polyurethane resin so as not to block the open end of the hollow fiber membrane, whereby the hollow portion of the hollow fiber membrane is fixed. Is airtightly partitioned and is fixed to the cylindrical case body, and the filtration portion is formed in a state of being connected to the activated carbon layer.
【0004】この濾過部では活性炭によって水道水中の
残留塩素、その他の臭気成分、有機物質等の除去が行わ
れ、中空糸膜層によって鉄錆やコロイド成分、塩素殺菌
のみでは除去し難い細菌等の除去が行われている。In this filtration section, residual carbon in tap water, other odorous components, organic substances, etc. are removed by activated carbon, and iron rust and colloidal components, bacteria etc. which are difficult to remove only by chlorine sterilization are provided by the hollow fiber membrane layer. Removal is taking place.
【0005】また、水道水の供給蛇口としては、近年、
流し台下に飲料水配管と併設してガス式または電気式給
湯器の温水配管よりの温水も供給できる形としたものが
普及してきている。In addition, as a tap for supplying tap water,
There is a widespread type in which a hot water supply from a hot water supply pipe of a gas type or an electric water heater can be provided together with a drinking water pipe under a sink.
【0006】[0006]
【発明が解決しようとする課題】このようにして濾過部
で浄化され、濾過部とそれに接続している通水管内に滞
留している浄水は水道水中に投入されている殺菌用の塩
素成分が殆ど除去されている。そのため、非衛生的な手
で浄水器の浄水吐出口に接触したり、浄水器設置場所で
未使用時に使用後の食器の洗浄や汚物等の洗浄時の飛沫
が浄水吐出口に付着した場合など、数日間も浄水器を未
使用の状態で放置しておくと、浄水吐出管内で雑菌が繁
殖し、浄水吐出口が汚染される可能性がある。In this way, the purified water purified by the filter section and staying in the filter section and the water pipe connected to the filter section has the chlorine component for sterilization introduced into tap water. Almost removed. Therefore, if you touch the water outlet of the water purifier with an unsanitary hand, or if the water droplets adhere to the water outlet of the water purifier when you are not using it at the place where the water purifier is installed and when you wash dishes or wash dirt, etc. , If the water purifier is left unused for several days, bacteria may grow inside the water purification pipe and the water purification outlet may be contaminated.
【0007】そこで、従来の浄水器では長時間使用しな
かった場合に再使用する時は一定量の浄水を捨て汚染さ
れた滞留水が除かれた状態で使用するようにしている。
しかし、汚染の度合いが強い時には少量の捨て水ではす
ぐに汚染が再現されてしまう。Therefore, when the conventional water purifier is not used for a long time and is reused, a certain amount of purified water is discarded and the contaminated accumulated water is removed before use.
However, when the degree of pollution is high, a small amount of waste water immediately reproduces the pollution.
【0008】一方、工業的殺菌手段としては薬剤を用い
る方法、紫外線殺菌燈を用いる方法、オゾンを用いる方
法、エチレンオキサイド等によるガス法、γ線等の放射
線を用いる方法、高圧蒸気を用いる方法等があるが飲料
水を供給する浄水器の一般家庭等での殺菌方法としては
実用性に乏しいものであった。On the other hand, as the industrial sterilization means, a method using a chemical agent, a method using an ultraviolet germicidal lamp, a method using ozone, a gas method using ethylene oxide or the like, a method using radiation such as γ rays, a method using high pressure steam, etc. However, it is not practical as a sterilizing method for a water purifier for supplying drinking water in general households.
【0009】以上のようなことから家庭内等での比較的
安全で実用可能な方法として温水による殺菌方法が挙げ
られる。この場合工業用途では完全な殺菌が出来ない場
合も有り得る為使用できないが、浄水器では汚染する細
菌が比較的低温で増殖しやすい菌が多いため50℃〜8
0℃といった比較的低温の温水による殺菌で有効であ
る。From the above, a method of sterilization with warm water is mentioned as a relatively safe and practical method at home. In this case, it may not be possible to completely sterilize it for industrial use, but it cannot be used in a water purifier, but since many contaminating bacteria easily grow at relatively low temperatures, 50 ° C to 8 ° C.
It is effective in sterilization with warm water at a relatively low temperature of 0 ° C.
【0010】浄水器の細菌汚染を温水による殺菌で防止
しようとする試みとしては濾過部通過後の水路のみを殺
菌する試み(特開平5−31480号公報)や活性炭を
主体とする濾過部を有する浄水器に対する温水殺菌の試
み(特開平4−243591号公報)等が示されてい
る。As an attempt to prevent bacterial contamination of the water purifier by sterilization with warm water, there is an attempt to sterilize only the water passage after passing through the filtration section (Japanese Patent Laid-Open No. 31480/1993) or a filtration section mainly composed of activated carbon. An attempt of hot water sterilization for a water purifier (Japanese Patent Laid-Open No. 4-243591) and the like are shown.
【0011】しかし、前者の濾過部通過後の水路のみの
殺菌では汚染防止に対して充分とは言えず、また、温水
非通水時における配管部での滞留水における汚染の心配
が考えられる。一方、後者の活性炭を主体とする濾過部
を有する浄水器においては水道水中に消毒の目的で入れ
られている塩素が除かれてしまう為濾過部で雑菌が繁殖
する。温水殺菌直後には衛生的な浄水が得られるが非温
水通水時には常に細菌の増殖により汚染された浄水とな
る可能性がある。本発明は、前述のような不備を生じる
こともなく、確実で簡便な浄水器の殺菌方法を提供する
ものである。However, the former sterilization of only the water passage after passing through the filtering portion is not sufficient for preventing pollution, and there is a concern that the accumulated water in the piping portion may be contaminated when hot water is not passed. On the other hand, in the latter water purifier having a filter section mainly composed of activated carbon, chlorine which is put in tap water for the purpose of disinfection is removed, so that various bacteria propagate in the filter section. Although sanitary purified water can be obtained immediately after sterilization with warm water, there is a possibility that purified water will always be contaminated by bacterial growth when non-warm water is passed. The present invention provides a reliable and simple sterilization method for a water purifier without causing the above-mentioned inadequacies.
【0012】[0012]
【課題を解決するための手段】本発明の要旨は、活性炭
と中空糸膜とで形成された濾過部を内蔵した浄水器に於
て、濾過部に温水を導入することにより浄水器内部を殺
菌することを特徴とする浄水器の温水殺菌方法である。The gist of the present invention is to sterilize the inside of a water purifier by introducing hot water into the filter in a water purifier having a filter formed of activated carbon and a hollow fiber membrane. It is a hot water sterilization method for a water purifier characterized by:
【0013】本発明において用いられる浄水器として
は、部材に用いられる材質として50〜80℃の温度範
囲での使用が可能な材質が選定されているもので、一般
に使用されている蛇口に接続可能な蛇口直結タイプ及び
据置タイプいずれでもよく、また、流しの下の配管部に
設置出来るようにしたアンダーシンクタイプのもので
も、温水も同じ水栓から供給出来るものであれば差支え
ない。As the water purifier used in the present invention, a material that can be used in a temperature range of 50 to 80 ° C. is selected as a material used for the member, and it can be connected to a commonly used faucet. It can be either a direct faucet direct connection type or a stationary type, and an undersink type that can be installed in the pipe section under the sink will do as long as hot water can be supplied from the same faucet.
【0014】浄水器を設置する蛇口としては飲料水配管
と併設してガス式または電気式給湯器の温水配管よりの
温水も供給出来、温水と水道水を混合することによって
所定の温度の温水を供給できるようにした湯水混合水栓
が望ましい。しかし、設備上飲料水供給蛇口と温水供給
蛇口各々が単独で設置されている場合には蛇口直結タイ
プ及び据置タイプについては、通常は飲料水供給蛇口に
浄水器を設置し、本発明の殺菌方法を実施する時のみ熱
水供給蛇口に移設することも可能である。As a faucet for installing a water purifier, hot water from a hot water pipe of a gas or electric water heater can be supplied together with a drinking water pipe, and hot water of a predetermined temperature can be obtained by mixing hot water and tap water. A hot and cold water mixing faucet that can be supplied is desirable. However, when the drinking water supply faucet and the hot water supply faucet are installed individually on the facility, for the faucet direct connection type and the stationary type, a water purifier is usually installed in the drinking water supply faucet and the sterilization method of the present invention. It is also possible to move to the hot water supply faucet only when performing.
【0015】また、温水の導入方法としては前記のよう
な湯水混合水栓の場合、単独の温水供給蛇口の場合いず
れにおいても、所定の温度の温水をその温度に対応する
時間通常の浄水への通水方法と同様にして通水すればよ
い。さらに、より簡便に実施する為には温水供給配管と
浄水器の原水導入口の間に開閉弁を設け、該開閉弁をタ
イマーで自動的に開閉し、開閉弁開口時に温水を浄水器
に供給し得るようにした装置を設置することも出来る。In addition, as a method of introducing hot water, in the case of a hot and cold water mixing faucet as described above and in the case of a single hot water supply faucet, hot water of a predetermined temperature is supplied to normal purified water for a time corresponding to the temperature. Water may be passed in the same manner as the method of passing water. Furthermore, for easier implementation, an opening / closing valve is provided between the hot water supply pipe and the raw water inlet of the water purifier, and the opening / closing valve is automatically opened / closed by a timer, and hot water is supplied to the water purifier when the opening / closing valve is opened. It is also possible to install a device adapted to do so.
【0016】温水の通水条件としては、温度が高い程短
時間での殺菌が可能であるが、安全性及び浄水器の耐熱
性を考慮した温度の選定をすることが望ましい。より詳
しくは表1の結果から明らかなように50℃では30分
程度、60℃では3〜5分、70℃では1〜3分、80
℃で1分の通水で殺菌が可能であるが、浄水器の容量に
よっては時間の延長が必要となってくる。As the hot water flow conditions, the higher the temperature, the shorter the time of sterilization is possible, but it is desirable to select the temperature in consideration of safety and heat resistance of the water purifier. More specifically, as is clear from the results in Table 1, it is about 30 minutes at 50 ° C, 3 to 5 minutes at 60 ° C, 1 to 3 minutes at 70 ° C, and 80 minutes.
It is possible to sterilize by passing water for 1 minute at ℃, but it may be necessary to extend the time depending on the capacity of the water purifier.
【0017】[0017]
【表1】 [Table 1]
【0018】温水殺菌時の通水時間は30分以上で実用
的ではなく、従って温水温度の下限値は50℃位が望ま
しい。また、家庭で80℃以上の温水を使用すること
は、安全上の問題があることと、高温の温水を使用する
為にはより高価な耐熱材を使用しなければならず実用性
に欠ける為温水温度の上限値は80℃位が望ましい。以
上のようなことから殺菌用温水としては50〜80℃が
望ましい。The water passage time during hot water sterilization is 30 minutes or more, which is not practical, and therefore the lower limit of the hot water temperature is preferably about 50 ° C. In addition, using hot water of 80 ° C or higher at home poses a safety problem, and in order to use hot water of high temperature, more expensive heat-resistant materials must be used, which is not practical. The upper limit of the hot water temperature is preferably around 80 ° C. From the above, as the sterilizing hot water, 50 to 80 ° C is desirable.
【0019】また、このような温度範囲では中空糸膜材
としてポリオレフィン、ポリスルフォン、アセテート等
からなる種々の中空糸膜が挙げられるが、中でも化学的
安定性、対微生物安定性、取扱いの容易性からポリオレ
フィン系の多孔質膜が好ましい。ポリオレフィンとして
は、エチレン、プロピレン、4−メチル−1−ペンテン
及び3−メチル−1−ブテンからなる群から選ばれる一
種以上の単量体を主成分とする重合体または共重合体、
或いはこれらのフッ素化合物を用いたものが挙げられ
る。Further, in such a temperature range, various hollow fiber membranes made of polyolefin, polysulfone, acetate and the like can be mentioned as the hollow fiber membrane material, and among them, chemical stability, microbial stability and easy handling are mentioned. Therefore, a polyolefin-based porous membrane is preferable. As the polyolefin, a polymer or copolymer mainly composed of one or more monomers selected from the group consisting of ethylene, propylene, 4-methyl-1-pentene and 3-methyl-1-butene,
Or the thing using these fluorine compounds is mentioned.
【0020】[0020]
【作用】本発明の浄水器の温水殺菌方法により浄水器の
継続使用時に発生し得る細菌汚染に対して防止手段を講
じることが出来、また発生した場合においては初期の未
汚染状態にするための対策を採ることが可能となる。The hot water sterilization method for a water purifier of the present invention can be used as a preventive measure against bacterial contamination that may occur during continuous use of the water purifier. It becomes possible to take measures.
【0021】[0021]
【実施例】本発明の殺菌方法を実際に蛇口直結型の浄水
器を用いて実施した例を以下具体的に説明する。 実施例1 表1に用いた浄水器と同様にして30℃×90RH%の
環境下で故意に汚染させた浄水器(三菱レイヨン(株)
製クリンスイデミ)を用いて実機での温水殺菌の効果を
調べた結果を表2及び表3に示す。表2は60℃温水通
水時、表3は70℃温水通水時の結果である。殺菌方法
の確認は、汚染した浄水初流、所定の温水通水後浄水及
び24hr室温放置後浄水初流について生菌数を調べる
ことにより確認した。また、生菌数測定方法は表1同様
従属栄養細菌試験を使用した。EXAMPLE An example in which the sterilizing method of the present invention is actually carried out by using a water faucet direct connection type water purifier will be specifically described below. Example 1 A water purifier intentionally contaminated under the environment of 30 ° C. × 90 RH% (Mitsubishi Rayon Co., Ltd.) in the same manner as the water purifier used in Table 1.
Table 2 and Table 3 show the results of examining the effect of sterilization with hot water in an actual machine using a cleansed product manufactured by Kurinsui. Table 2 shows the results when hot water at 60 ° C was passed, and Table 3 shows the results when hot water at 70 ° C was passed. The confirmation of the sterilization method was performed by examining the viable cell counts of the contaminated purified water initial flow, the purified water after passing a predetermined amount of warm water, and the purified water initial flow after being left at room temperature for 24 hours. As for the method for measuring the viable cell count, the heterotrophic bacteria test was used as in Table 1.
【0022】[0022]
【表2】 [Table 2]
【0023】[0023]
【表3】 [Table 3]
【0024】このように蛇口直結タイプの洗浄器につい
て温水殺菌を実施した結果、通水する温度に対応した時
間通水をすれば充分な殺菌効果が得られることが判明し
た。As a result of carrying out warm water sterilization on the faucet direct connection type washing machine in this manner, it was found that a sufficient sterilization effect can be obtained if water is passed for a time corresponding to the temperature at which water is passed.
【0025】[0025]
【発明の効果】本発明は、活性炭と中空糸膜とで形成さ
れた濾過部を内蔵した浄水器に於て温水を用いて浄水器
内部を殺菌することを特徴とする浄水器の温水殺菌方法
であり、通常の工業的な殺菌方法と異なり一般家庭で容
易且つ簡便な手段によって殺菌することを可能としたも
のである。EFFECT OF THE INVENTION The present invention is a method for sterilizing hot water in a water purifier, characterized in that the inside of the water purifier is sterilized by using hot water in the water purifier having a built-in filter formed of activated carbon and a hollow fiber membrane. In contrast to the usual industrial sterilization method, it is possible to sterilize by ordinary households by an easy and simple means.
Claims (2)
を内蔵した浄水器に於て、濾過部に温水を導入すること
により浄水器内部を殺菌することを特徴とする浄水器の
温水殺菌方法。1. A water purifier with a built-in filter formed of activated carbon and a hollow fiber membrane, wherein hot water is introduced into the filter to sterilize the inside of the water purifier. Sterilization method.
を特徴とする請求項1記載の方法。2. The method according to claim 1, wherein the temperature of the hot water is 50 ° C. to 80 ° C.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30664193A JPH07155750A (en) | 1993-12-07 | 1993-12-07 | Hot-water sterilization method for water purifier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30664193A JPH07155750A (en) | 1993-12-07 | 1993-12-07 | Hot-water sterilization method for water purifier |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH07155750A true JPH07155750A (en) | 1995-06-20 |
Family
ID=17959549
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP30664193A Pending JPH07155750A (en) | 1993-12-07 | 1993-12-07 | Hot-water sterilization method for water purifier |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH07155750A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002026629A3 (en) * | 2000-09-28 | 2002-12-19 | United States Filter Corp | Electrodeionization device and methods of use |
US8864971B2 (en) | 2003-11-13 | 2014-10-21 | Evoqua Water Technologies Llc | Water treatment system and method |
US8894834B2 (en) | 2003-11-13 | 2014-11-25 | Evoqua Water Technologies Llc | Water treatment system and method |
US9011660B2 (en) | 2007-11-30 | 2015-04-21 | Evoqua Water Technologies Llc | Systems and methods for water treatment |
US9023185B2 (en) | 2006-06-22 | 2015-05-05 | Evoqua Water Technologies Llc | Low scale potential water treatment |
US9592472B2 (en) | 2006-06-13 | 2017-03-14 | Evoqua Water Technologies Llc | Method and system for irrigation |
US10252923B2 (en) | 2006-06-13 | 2019-04-09 | Evoqua Water Technologies Llc | Method and system for water treatment |
US10625211B2 (en) | 2006-06-13 | 2020-04-21 | Evoqua Water Technologies Llc | Method and system for water treatment |
-
1993
- 1993-12-07 JP JP30664193A patent/JPH07155750A/en active Pending
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002026629A3 (en) * | 2000-09-28 | 2002-12-19 | United States Filter Corp | Electrodeionization device and methods of use |
US8864971B2 (en) | 2003-11-13 | 2014-10-21 | Evoqua Water Technologies Llc | Water treatment system and method |
US8894834B2 (en) | 2003-11-13 | 2014-11-25 | Evoqua Water Technologies Llc | Water treatment system and method |
US9592472B2 (en) | 2006-06-13 | 2017-03-14 | Evoqua Water Technologies Llc | Method and system for irrigation |
US10252923B2 (en) | 2006-06-13 | 2019-04-09 | Evoqua Water Technologies Llc | Method and system for water treatment |
US10625211B2 (en) | 2006-06-13 | 2020-04-21 | Evoqua Water Technologies Llc | Method and system for water treatment |
US9023185B2 (en) | 2006-06-22 | 2015-05-05 | Evoqua Water Technologies Llc | Low scale potential water treatment |
US9586842B2 (en) | 2006-06-22 | 2017-03-07 | Evoqua Water Technologies Llc | Low scale potential water treatment |
US9011660B2 (en) | 2007-11-30 | 2015-04-21 | Evoqua Water Technologies Llc | Systems and methods for water treatment |
US9637400B2 (en) | 2007-11-30 | 2017-05-02 | Evoqua Water Technologies Llc | Systems and methods for water treatment |
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