JPH1043758A - Method for purifying apparatus for producing water for dialysis - Google Patents
Method for purifying apparatus for producing water for dialysisInfo
- Publication number
- JPH1043758A JPH1043758A JP8205751A JP20575196A JPH1043758A JP H1043758 A JPH1043758 A JP H1043758A JP 8205751 A JP8205751 A JP 8205751A JP 20575196 A JP20575196 A JP 20575196A JP H1043758 A JPH1043758 A JP H1043758A
- Authority
- JP
- Japan
- Prior art keywords
- water
- dialysis
- water supply
- pump
- bypass pipe
- 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.)
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】この発明は、人工透析などに
欠かすことができない高純度の水を製造する透析用水製
造装置の浄化法に関するものである。
【０００２】
【従来の技術】人工腎臓透析などの血液透析においては
大量に透析液が使用され、これに伴って透析液の原液を
高純度の水で希釈して調整することが行われている。こ
の透析用に使われる水は、カルシウムイオン、鉄イオン
などの陽イオン物質や硫酸イオンや硝酸イオンなどの陰
イオン物質、さらには各種のコロイドや細菌類を含まな
いことが要求されている。
【０００３】このため、従来の透析用の水の製造は、多
くは水道水から取水した透析用の原水を図２で例示する
透析用水製造装置５１によって高純度の透析用水を製造
している。すなわち、透析用の原水は、原水送水ポンプ
５２によって原水中に含まれるスケールの原因となるＣ
ａ，Ｍｇなどの硬度成分を除去するための硬水軟化装置
（以下、単に「軟化装置」という。）５４と、残留塩素
を除去するためのカーボンフィルター５５とからなる前
処理装置５３に順次送水されて前処理される。
【０００４】ついで、この前処理で得られた前処理水
は、加圧ポンプ５６で加圧されて逆浸透膜で構成した逆
浸透モジュール（以下、単に「ＲＯモジュール」とい
う。）５７中に通されて微細な不純物までを濾過し、濾
過によって得た精製水は処理水タンク５８に貯留され、
該処理水タンク５８内で紫外線殺菌灯５９の照射などに
よって殺菌して透析用水をとし、得られた透析用水は送
水ポンプ６０で透析液供給装置６１に供給して透析用と
して使用される。
【０００５】この透析用水製造装置５１の加圧ポンプ５
６の前と送水ポンプ６０の後との間には、加圧ポンプ５
６や送水ポンプ６０等に異常があって造水運転が不能と
なった場合、前記軟化装置５４とカーボンフィルター５
５による前処理装置５３によって得られた前処理水を前
記透析液供給装置６１に一時的にバイパスして供給する
ためのバイパス管ｐ１が並列して設けられているが、こ
のバイパス管ｐ１は通常の造水運転では使用されていな
い。
【０００６】この透析用水製造装置５１には、汚れの最
もひどく目詰まりの可能性の高いＲＯモジュール５７に
生じた汚れを消毒、洗浄する目的で消毒洗浄専用のタン
ク６２を付属させている。しかして、このタンク６２に
消毒液又は洗浄液を投入し、消毒液又は洗浄液を管ｐ３
で抜き出して加圧ポンプ５６によってＲＯモジュール５
７に送り込み、ＲＯモジュール５７内を消毒又は洗浄す
る。消毒又は洗浄した後の液は、送水管Ｐ２に設けた分
岐管ｐ４と、ＲＯモジュール５７に設けたバイパス管ｐ
５から分岐した分岐管ｐ６によって前記タンク６２に戻
している。
【０００７】
【発明が解決しようとする課題】かゝる公知の透析用水
製造装置５１における洗浄方法は、前記消毒洗浄専用の
タンク６２を必須とし、その洗浄は実質的にＲＯモジュ
ール５７内の消毒洗浄とその前後の送水管の一部のみに
留まっているにすぎない。また、前記バイパス管ｐ１や
前処理装置５３以降のＲＯモジュール５７を含めた機器
配管類の全体を消毒洗浄するものではない。
【０００８】したがって、この洗浄法は前記バイパス管
ｐ１や前処理装置５３以降のＲＯモジュール５７を含め
た機器配管類の全体の浄化には不充分なもので、この不
充分な浄化に起因して透析用水が汚染される懸念が十分
にありうる。たとえば、前記バイパス管ｐ１は、通常は
使用されていないため管内に滞留した水には細菌類が繁
殖し易く、このバイパス管ｐ１は主たる送水管とつなが
っているので、細菌類がきれいな水であるはずの送水管
の系統内に入り、バイパス管ｐ１を使用する場合には細
菌の混入した水が送水されることになる。
【０００９】この発明はかゝる現状に鑑み、前記バイパ
ス管の滞留水の適宜排出又は／及びバイパス管、ＲＯモ
ジュール、処理水タンクおよび送水ポンプとそれ以降の
透析用水供給装置の直前までの送水管の系統の消毒洗浄
とを能率よく行って透析用水製造装置の浄化を図らんと
するものである。
【００１０】
【課題を解決するための手段】上記の目的を達成するた
め、この発明の請求項１に記載の発明は、透析用原水の
前処理水を加圧ポンプによって逆浸透モジュールに通し
て精製し、得た精製水を処理水タンクに貯留して送水ポ
ンプで透析用水の使用側に向けて供給する透析用水製造
装置において、前記加圧ポンプの入口側から前記送水ポ
ンプ後の透析用水の使用側に至る間の送水系統に並列し
て設けたバイパス管内に、処理水タンク内の精製水を送
水ポンプによって逆流させることによって、該精製水と
共にバイパス管内の滞留水を加圧ポンプ、逆浸透モジュ
ールを通して逆浸透モジュールの出口送水管から分岐し
た排水管を通じて系外に排出することを特徴とする透析
用水製造装置の浄化法である。
【００１１】また、請求項２に記載の発明は、透析用原
水の前処理水を加圧ポンプによって逆浸透モジュールに
通して精製し、得た精製水を処理水タンクに貯留して送
水ポンプで透析用水の使用側に向けて供給する透析用水
製造装置において、前記加圧ポンプの入口側から前記送
水ポンプ後の透析用水の使用側に至る間の送水系統に並
列して設けたバイパス管内に、処理水タンク内に投入し
た消毒液又は洗浄液を前記送水ポンプによって逆流させ
ることによって、前記加圧ポンプ、逆浸透モジュール及
び処理水タンクを経て前記透析用水の使用側に至る送水
経路を消毒液又は洗浄液で満たし、所定時間放置の後、
消毒液又は洗浄液を系外に排出して経路内を浄化するこ
とを特徴とする透析用水製造装置の浄化法である。
【００１２】さらに、請求項３に記載の発明は、透析用
原水の前処理水を加圧ポンプによって逆浸透モジュール
に通して精製し、得た精製水を処理水タンクに貯留して
送水ポンプで透析用水の使用側に向けて供給する透析用
水製造装置の浄化に際し、
（１）前記加圧ポンプの入口側から前記送水ポンプ後の
透析用水の使用側に至る間の送水系統に並列して設けた
バイパス管内に、処理水タンク内の精製水を送水ポンプ
によって逆流させて該精製水を加圧ポンプ、逆浸透モジ
ュールを通して逆浸透モジュールの出口送水管から分岐
した排水管を通じて系外に排出することによりバイパス
管内の滞留水を適宜に排出する手段。
（２）処理水タンク内に消毒液又は洗浄液を投入し、該
消毒液又は洗浄液を前記送水ポンプによってバイパス管
内に逆流させて前記加圧ポンプ、逆浸透モジュール及び
処理水タンクを経て前記透析用水の使用側に至る送水経
路を消毒液又は洗浄液で満たして所定時間放置の後、消
毒液又は洗浄液を系外に排出して該経路内を浄化する手
段。を実施することを特徴とする透析用水製造装置の浄
化法である。
【００１３】
【発明の実施の形態】この発明における透析用水製造装
置における浄化は、透析用水製造装置を構成するバイパ
ス管内に滞留水を通常とは逆の方向に水を流すことによ
って、ＲＯモジュールを経由して系外に排出する手段
と、ＲＯモジュールの水に洗浄剤又は消毒液を添加し、
バイパス管、ＲＯモジュール、処理水タンク及び送水管
を洗浄又は消毒する手段からなるもので、前記の手段を
併せて実施してもよい。その際、バイパス管内の滞留水
の排出と、消毒液又は洗浄液による前記バイパス管を含
めた前処理装置以降の送水系統の消毒又は洗浄は、これ
らをいずれも造水運転時以外の所定の時期に実施するこ
とが望ましい。特に、バイパス管内の滞留水の排出は、
ある時間ごとに定期的に実施してバイパス管内に滞留水
のない状態を保持することが望ましい。
【００１４】
【作用】この発明の透析用水製造装置の浄化法は、透析
用原水の前処理水を一時的に透析用水の使用側に向けて
直接供給するバイパス管の滞留水を精製水を使用して系
外に排出することによって、バイパス管内の水を常に清
浄に保持することができる。また、処理水タンク内に消
毒液又は洗浄液を投入し、該消毒液又は洗浄液を透析用
原水の前処理水を一時的に透析用水の使用側に向けて直
接供給するバイパス管内に逆流させて加圧ポンプ、ＲＯ
モジュールおよび処理水タンクを経て前記透析用水の使
用側に至る送水経路を消毒液又は洗浄液で消毒又は洗浄
することによって透析用水製造装置の送水系統の機器、
配管系を簡単かつ容易に浄化し、常に清浄に保持するこ
とができる。
【００１５】
【実施例】以下、この発明の透析用水製造装置の浄化法
の実施例を添付の図面に基づいて具体的に説明する。こ
の発明が適用される透析用水製造装置１は、図１に示す
ように透析用の原水を前処理するための原水送水ポンプ
２と送水された原水中の硬質成分を除去するための軟化
装置４及びカーボンフィルター５とからなる前処理装置
３と、得られた前処理水を加圧して送水する加圧ポンプ
６と、該加圧ポンプ６で加圧した前処理水を濾過精製す
るＲＯモジュール７と、該ＲＯモジュール７によって得
られた精製水を貯留して紫外線殺菌灯９の照射によって
殺菌する処理水タンク８及び処理水タンク８内の精製水
を透析液供給装置１１に向けて送水する送水ポンプ１０
とから構成されている。
【００１６】また、この透析用水製造装置１には前記加
圧ポンプ６の入口側の配管Ｐ１と、送水ポンプ１０の出
口側の配管Ｐ４との間に、前記の前処理装置３で得た前
処理水を一時的に透析液供給装置１１に向けて直接供給
することのできるバイパス管Ｐ５が設けられている。
【００１７】かゝる透析用水製造装置において、通常の
造水運転は、バイパス管Ｐ５に設けたバルブＶ２を閉止
し、加圧ポンプ６の入口側に設けたバルブＶ１を開放し
て加圧ポンプ６を稼働させて、前処理水をＲＯモジュー
ル７内に送水して超精密濾過によって精製し、得られた
精製水を管Ｐ２を介して処理水タンク８内に送って紫外
線殺菌灯９の照射で殺菌して貯留している。この精製水
は、必要に応じて送水ポンプ１０によって透析液供給装
置１１に向けて送り出される。
【００１８】このような正常運転が、たとえば、加圧ポ
ンプ６又は送水ポンプ１０等に異常事態が発生して造水
運転が不能となった場合には、加圧ポンプ１０の入口側
のバルブＶ１を閉じると共に、前記バイパス管Ｐ５のバ
ルブＶ２を開き、原水送水パイプ２によって前処理水を
バイパス管Ｐ５を通じて直接透析液供給装置１１に向け
て供給することができる。したがって、図１に示す透析
用水製造装置１は、図２で示した従来の透析用水製造装
置５１において前記消毒洗浄専用のタンク６２を付属さ
せていないこと以外には構造に実質的な差異はない。ま
た、実際の造水運転やバイパス管Ｐ５による前処理水の
一時的な供給も従来の装置による使用方法と実質的な差
異はない。
【００１９】このような構成の透析用水製造装置１にお
いて、その浄化法は、バイパス管Ｐ５内の滞留する水の
排出と、前処理装置３以降の機器配管類の消毒と洗浄と
に分けられる。
【００２０】前者におけるバイパス管Ｐ５内の滞留水の
排出は、処理水タンク８内に貯留された精製水によって
滞留水を排出する。すなわち、加圧ポンプ６の入口側の
管Ｐ１のバルブＶ１とバイパス管Ｐ５に設けたバルブＶ
２を開放し、透析液供給装置１１の入口側の三方バルブ
Ｖ３を閉じて水が透析液供給装置１１に供給されないよ
うに閉止する。ついで、送水ポンプ１０を作動させて処
理水タンク８内の精製水をバイパス管Ｐ５内に逆流さ
せ、加圧ポンプ６、ＲＯモジュール７を経由して管Ｐ
６、バルブＶ５、管Ｐ７を経て滞留水を系外に排出する
と同時に、ＲＯモジュール７後の送水管Ｐ２の途中から
分岐させた管Ｐ８、バルブＶ６を経て系外に排出してバ
イパス管Ｐ５内を清浄にするものである。
【００２１】この操作は、透析用水を透析液供給装置１
１に供給しない正常運転を停止した時期を見計らって、
好ましくは一定時間ごとに実施してバイパス管Ｐ５内の
滞留水を定期的に排出し、滞留水によるバイパス管Ｐ５
内の細菌類の繁殖を極力抑制することができる。
【００２２】後者の前処理装置３以降の機器配管類の消
毒と洗浄は、以下のとおりに実施される。まず、精製水
の処理水タンク８内に消毒液又は洗浄液を投入したの
ち、バイパス管Ｐ５のバルブＶ２を開放し、かつ透析液
供給装置１１の入口側の三方バルブＶ３を操作して水が
透析液供給装置１１に供給されないように閉止する。つ
いで、送水ポンプ１０を作動させて処理水タンク８内の
消毒液又は洗浄液をバイパス管Ｐ５内に逆流させ、加圧
ポンプ６、ＲＯモジュール７を経由して消毒液又は洗浄
液を管Ｐ２内に流して処理水タンク８内に戻すと共に、
透析用水供給装置１１の入口側の三方バルブＶ３を排水
管Ｐ１０側に開放する。かゝる操作によって、前処理装
置３以降、透析液供給装置１１の入口までの送水経路内
は前記消毒液又は洗浄液で満たされるので、前記三方バ
ルブＶ３を閉じた状態で所定の時間放置する。
【００２３】所定の時間が経過したのち、各装置に付随
する排水管Ｐ７，Ｐ８，Ｐ９及びＰ１０の各バルブＶ
５，Ｖ６，Ｖ７及びＶ３を開放して内部の消毒液又は洗
浄液を系外に排出する。その後、各バルブを造水運転状
態にしたのち、加圧ポンプ６を運転し、各配管及び処理
水タンクを精製水で洗浄して元の状態に復帰させた後、
通常の造水運転の状態に復帰させる。
【００２４】
【発明の効果】この発明の透析用水製造装置の浄化法
は、前処理水を一時的に透析用水の使用側に向けて直接
供給するためのバイパス管内の滞留水を、精製処理され
た精製水を前記バイパス管内に逆流させてＲＯモジュー
ル後の排水管を通じて系外に排出することによってバイ
パス管内を常に清潔な状態を保持することができる。
【００２５】また、透析用水製造装置の処理水タンクに
消毒液又は洗浄液を投入し、これを前記バイパス管内に
逆流させて当該バイパス管、加圧ポンプ、ＲＯモジュー
ル、処理水タンク及び送水ポンプを含めた送水系統を隈
なく浄化することによって、透析用水製造装置専用の消
毒洗浄タンクを不要とし、前処理装置以降の機器配管類
の消毒と洗浄による送水系統の機器配管類全体を簡単な
操作によって隈なく浄化することができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for purifying a dialysis water producing apparatus for producing high-purity water essential for artificial dialysis and the like. [0002] In hemodialysis such as artificial kidney dialysis, a large amount of dialysate is used, and accordingly, a stock solution of dialysate is adjusted by diluting it with high-purity water. . The water used for the dialysis is required to be free of cationic substances such as calcium ions and iron ions, anionic substances such as sulfate ions and nitrate ions, and various colloids and bacteria. [0003] For this reason, in the conventional production of dialysis water, high-purity dialysis water is produced by a dialysis water production apparatus 51 illustrated in FIG. 2 in most cases from dialysis raw water taken from tap water. That is, the raw water for dialysis is converted into C that causes scale contained in the raw water by the raw water feed pump 52.
Water is sequentially sent to a pretreatment device 53 comprising a water softener (hereinafter simply referred to as “softener”) 54 for removing hardness components such as a and Mg, and a carbon filter 55 for removing residual chlorine. Pre-processed. [0004] The pretreated water obtained in this pretreatment is pressurized by a pressurizing pump 56 and passed through a reverse osmosis module (hereinafter simply referred to as “RO module”) 57 constituted by a reverse osmosis membrane. Filtered to fine impurities, purified water obtained by filtration is stored in a treated water tank 58,
The dialysis water is sterilized in the treated water tank 58 by irradiation with an ultraviolet germicidal lamp 59 or the like, and the obtained dialysis water is supplied to a dialysate supply device 61 by a water supply pump 60 and used for dialysis. [0005] The pressurizing pump 5 of the dialysis water producing apparatus 51
Between the pressure pump 5 and the water supply pump 60.
6 and the water supply pump 60, etc., when the water freshening operation becomes impossible, the softening device 54 and the carbon filter 5
5 is provided in parallel with a bypass pipe p1 for temporarily bypassing and supplying the pretreated water obtained by the pretreatment device 53 by the pretreatment device 53 to the dialysate supply device 61. It is not used in fresh water operation. The dialysis water producing apparatus 51 is provided with a tank 62 dedicated to disinfecting and cleaning for the purpose of disinfecting and cleaning dirt generated in the RO module 57, which is most likely to be clogged with dirt. Then, a disinfecting solution or a cleaning solution is poured into the tank 62, and the disinfecting solution or the cleaning solution is supplied to the pipe p3.
RO module 5 by pressurizing pump 56
7 to disinfect or clean the inside of the RO module 57. The liquid after disinfection or cleaning is supplied to a branch pipe p4 provided in the water supply pipe P2 and a bypass pipe p provided in the RO module 57.
5 is returned to the tank 62 by a branch pipe p6. [0007] The cleaning method in the known dialysis water producing apparatus 51 requires a tank 62 dedicated to the disinfecting and cleaning, and the cleaning is substantially performed by the disinfecting in the RO module 57. It is only a part of the water pipe before and after the cleaning. Further, the entire equipment piping including the bypass pipe p1 and the RO module 57 after the pretreatment device 53 is not disinfected and cleaned. Therefore, this cleaning method is inadequate for purifying the entire equipment piping including the bypass pipe p1 and the RO module 57 after the pretreatment device 53. There is a good possibility that the dialysis water will be contaminated. For example, since the bypass pipe p1 is not normally used, bacteria are easily propagated in the water staying in the pipe. Since the bypass pipe p1 is connected to a main water supply pipe, the bacteria are clean water. If the user enters the water pipe system that should be used and uses the bypass pipe p1, water containing bacteria will be sent. In view of the above situation, the present invention appropriately discharges and / or supplies the stagnant water in the bypass pipe, and / or feeds the bypass pipe, RO module, treated water tank, water supply pump, and the immediately preceding dialysis water supply device. It is intended to purify the dialysis water producing apparatus by efficiently performing disinfection and cleaning of the water pipe system. [0010] In order to achieve the above-mentioned object, the present invention according to claim 1 of the present invention provides a method in which pretreatment water for dialysis is passed through a reverse osmosis module by a pressure pump. In a dialysis water producing apparatus which stores purified water obtained in a treated water tank and supplies the purified water to a use side of dialysis water with a water supply pump, the dialysis water after the water supply pump is supplied from an inlet side of the pressure pump. By purifying the purified water in the treated water tank back into the bypass pipe provided in parallel with the water supply system leading to the use side by the water supply pump, the water retained in the bypass pipe together with the purified water is pressurized by a pressure pump and reverse osmosis. A method for purifying a dialysis water producing apparatus, wherein the water is discharged outside the system through a drain pipe branched from an outlet water pipe of a reverse osmosis module through a module. Further, according to the present invention, the pretreated water for dialysis is purified by passing it through a reverse osmosis module by a pressure pump, and the obtained purified water is stored in a treated water tank and fed by a water pump. In the dialysis water producing apparatus that supplies toward the use side of the dialysis water, in a bypass pipe provided in parallel with a water supply system from the inlet side of the pressure pump to the use side of the dialysis water after the water supply pump, By disinfecting the disinfecting solution or the cleaning solution put into the treated water tank by the water pump, the disinfecting solution or the cleaning solution is transferred to the water supply path from the pressurizing pump, the reverse osmosis module and the treated water tank to the use side of the dialysis water. After filling for a predetermined time,
A method for purifying a dialysis water producing apparatus, comprising discharging a disinfecting liquid or a cleaning liquid to the outside of the system and purifying the inside of the passage. Further, according to the present invention, the pretreated water of dialysis raw water is purified by passing it through a reverse osmosis module by a pressure pump, and the obtained purified water is stored in a treated water tank and fed by a water pump. When purifying the dialysis water producing apparatus to be supplied to the dialysis water use side, (1) provided in parallel with the water supply system from the inlet side of the pressure pump to the dialysis water use side after the water supply pump; The purified water in the treated water tank is caused to flow backward by the water supply pump into the bypass pipe, and the purified water is discharged out of the system through a pressurized pump, a reverse osmosis module, and a drain pipe branched from an outlet water pipe of the reverse osmosis module. Means for appropriately discharging the accumulated water in the bypass pipe. (2) Disinfecting solution or washing solution is put into the treated water tank, and the disinfecting solution or washing solution is caused to flow back into the bypass pipe by the water supply pump, and the dialysis water is passed through the pressure pump, the reverse osmosis module and the treated water tank. A means for filling a water supply path to the use side with a disinfectant or a cleaning liquid and leaving it for a predetermined time and then discharging the disinfectant or the cleaning liquid out of the system to purify the inside of the path. A method for purifying a dialysis water producing apparatus, characterized by carrying out the following. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Purification in a dialysis water producing apparatus according to the present invention is performed by flowing accumulated water in a bypass pipe constituting a dialysis water producing apparatus in a direction opposite to a normal direction, thereby removing an RO module. Means for draining out of the system via the system, and adding a cleaning agent or disinfectant to the water of the RO module,
It comprises a means for cleaning or disinfecting the bypass pipe, the RO module, the treated water tank and the water supply pipe, and the above means may be implemented together. At that time, the discharge of the accumulated water in the bypass pipe and the disinfection or cleaning of the water supply system after the pretreatment device including the bypass pipe with the disinfectant or the cleaning liquid are performed at a predetermined time other than the fresh water operation. It is desirable to carry out. In particular, the discharge of stagnant water in the bypass pipe
It is desirable to carry out periodically at a certain time interval to maintain a state in which no water remains in the bypass pipe. According to the method for purifying a dialysis water producing apparatus of the present invention, purified water is used as the stagnant water in a bypass pipe for directly supplying the pretreated water of dialysis raw water directly to the use side of the dialysis water. By discharging the water outside the system, the water in the bypass pipe can always be kept clean. Also, a disinfecting solution or a cleaning solution is charged into the treated water tank, and the disinfecting solution or the cleaning solution is added back to the bypass pipe that directly supplies the pretreated water of the raw dialysis water directly to the use side of the dialysis water. Pressure pump, RO
Equipment of the water supply system of the dialysis water production apparatus by disinfecting or washing the water supply path to the use side of the dialysis water through a module and a treated water tank with a disinfectant or a cleaning liquid,
The piping system can be cleaned easily and easily and kept clean at all times. An embodiment of the method for purifying a dialysis water producing apparatus according to the present invention will be specifically described below with reference to the accompanying drawings. As shown in FIG. 1, a dialysis water producing apparatus 1 to which the present invention is applied includes a raw water feed pump 2 for pre-treating raw water for dialysis and a softening apparatus 4 for removing hard components in the supplied raw water. And a carbon filter 5, a pressurizing pump 6 for pressurizing and feeding the obtained pretreated water, and an RO module 7 for filtering and purifying the pretreated water pressurized by the pressurizing pump 6. And a treated water tank 8 for storing purified water obtained by the RO module 7 and sterilizing the irradiated water with an ultraviolet sterilizing lamp 9, and a purified water in the treated water tank 8 to be supplied to the dialysate supply device 11. Pump 10
It is composed of The dialysis water producing apparatus 1 is provided between the pipe P1 on the inlet side of the pressurizing pump 6 and the pipe P4 on the outlet side of the water supply pump 10 before the water obtained by the pretreatment device 3 is used. A bypass pipe P5 capable of temporarily supplying the treated water directly to the dialysate supply device 11 is provided. In such a dialysis water producing apparatus, a normal fresh water producing operation is performed by closing the valve V2 provided on the bypass pipe P5 and opening the valve V1 provided on the inlet side of the pressurizing pump 6 to pressurize the pump. 6, the pretreated water is fed into the RO module 7 and purified by ultra-precision filtration, and the obtained purified water is sent into the treated water tank 8 via the pipe P2 and irradiated with the ultraviolet sterilizing lamp 9. It is sterilized and stored. This purified water is sent out to the dialysate supply device 11 by the water feed pump 10 as needed. In such a normal operation, for example, when an abnormal situation occurs in the pressurizing pump 6 or the water supply pump 10 or the like and the fresh water producing operation becomes impossible, the valve V1 on the inlet side of the pressurizing pump 10 , The valve V2 of the bypass pipe P5 is opened, and the pretreatment water can be directly supplied to the dialysate supply device 11 through the bypass pipe P5 by the raw water supply pipe 2. Therefore, there is no substantial difference in the structure of the dialysis water producing apparatus 1 shown in FIG. 1 except that the tank 62 dedicated to disinfecting and cleaning is not attached to the conventional dialysis water producing apparatus 51 shown in FIG. . Further, there is no substantial difference between the actual desalination operation and the temporary supply of the pretreatment water by the bypass pipe P5 as compared with the method of using the conventional apparatus. In the dialysis water producing apparatus 1 having such a configuration, the purification method is divided into discharge of water remaining in the bypass pipe P5, and disinfection and cleaning of equipment piping after the pretreatment apparatus 3. In the former case, the accumulated water in the bypass pipe P5 is discharged by the purified water stored in the treated water tank 8. That is, the valve V1 of the pipe P1 on the inlet side of the pressurizing pump 6 and the valve V provided on the bypass pipe P5
2 is opened, and the three-way valve V3 on the inlet side of the dialysate supply device 11 is closed so that water is not supplied to the dialysate supply device 11. Then, the water supply pump 10 is operated to cause the purified water in the treated water tank 8 to flow back into the bypass pipe P5, and the pipe P is passed through the pressurizing pump 6 and the RO module 7.
6. At the same time, the accumulated water is discharged out of the system through the valve V5 and the pipe P7, and at the same time, discharged out of the system through the pipe P8 branched from the middle of the water supply pipe P2 after the RO module 7 and the valve V6, and discharged into the bypass pipe P5. Is to purify. In this operation, the dialysis water is supplied to the dialysate supply device 1.
At the time when the normal operation that does not supply to 1 was stopped,
It is preferably carried out at regular time intervals to periodically discharge the accumulated water in the bypass pipe P5,
The proliferation of bacteria in the inside can be suppressed as much as possible. The latter disinfection and cleaning of the equipment piping after the pretreatment device 3 are performed as follows. First, after a disinfectant solution or a cleaning solution is charged into the treated water tank 8 for purified water, the valve V2 of the bypass pipe P5 is opened, and the water is dialyzed by operating the three-way valve V3 on the inlet side of the dialysate supply device 11. The liquid supply device 11 is closed so as not to be supplied. Next, the water supply pump 10 is operated to cause the disinfectant or the cleaning liquid in the treated water tank 8 to flow back into the bypass pipe P5, and the disinfectant or the cleaning liquid is supplied to the pipe P2 via the pressurizing pump 6 and the RO module 7. Back into the treated water tank 8
The three-way valve V3 on the inlet side of the dialysis water supply device 11 is opened to the drain pipe P10 side. By such an operation, since the inside of the water supply path from the pretreatment device 3 to the inlet of the dialysate supply device 11 is filled with the disinfecting solution or the cleaning solution, the three-way valve V3 is closed and left for a predetermined time. After a lapse of a predetermined time, each valve V of drain pipes P7, P8, P9 and P10 associated with each device is
5, V6, V7 and V3 are opened to discharge the internal disinfectant or cleaning solution out of the system. After that, after each valve is brought into a fresh water operating state, the pressurizing pump 6 is operated, and each pipe and the treated water tank are washed with purified water and returned to the original state.
Return to normal desalination operation. According to the purification method of the dialysis water producing apparatus of the present invention, the accumulated water in the bypass pipe for temporarily supplying the pretreatment water directly to the use side of the dialysis water is purified. By flowing the purified water back into the bypass pipe and discharging the purified water out of the system through the drain pipe after the RO module, the inside of the bypass pipe can always be kept clean. Further, a disinfecting solution or a washing solution is charged into the treated water tank of the dialysis water producing apparatus, and the disinfecting solution or the washing solution is caused to flow back into the bypass pipe to include the bypass pipe, the pressurizing pump, the RO module, the treated water tank, and the water pump. Purification of the entire water supply system eliminates the need for a disinfection and cleaning tank dedicated to dialysis water production equipment, and disinfects and cleans equipment piping after the pre-treatment equipment, thereby simplifying the entire equipment piping of the water supply system through simple operations. It can be purified without.
【図面の簡単な説明】
【図１】この発明に適用する透析用水製造装置の系統図
である。
【図２】従来の透析用水製造装置の系統図である。
【符号の説明】
１ 透析用水製造装置
６ 加圧ポンプ
７ 逆浸透モジュール（ＲＯモジュール）
８ 処理水タンク
１０ 送水ポンプ
Ｐ５ バイパス管
Ｐ６，Ｐ８ 排水管BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a system diagram of a dialysis water producing apparatus applied to the present invention. FIG. 2 is a system diagram of a conventional dialysis water producing apparatus. [Description of Signs] 1 Dialysis water production apparatus 6 Pressurizing pump 7 Reverse osmosis module (RO module) 8 Treated water tank 10 Water pump P5 Bypass pipe P6, P8 Drain pipe
Claims (1)
って逆浸透モジュールに通して精製し、得た精製水を処
理水タンクに貯留して送水ポンプで透析用水の使用側に
向けて供給する透析用水製造装置において、前記加圧ポ
ンプの入口側から前記送水ポンプ後の透析用水の使用側
に至る間の送水系統に並列して設けたバイパス管内に、
処理水タンク内の精製水を送水ポンプによって逆流させ
ることによって、該精製水と共にバイパス管内の滞留水
を加圧ポンプ、逆浸透モジュールを通して逆浸透モジュ
ールの出口送水管から分岐した排水管を通じて系外に排
出することを特徴とする透析用水製造装置の浄化法。 【請求請２】 透析用原水の前処理水を加圧ポンプによ
って逆浸透モジュールに通して精製し、得た精製水を処
理水タンクに貯留して送水ポンプで透析用水の使用側に
向けて供給する透析用水製造装置において、前記加圧ポ
ンプの入口側から前記送水ポンプ後の透析用水の使用側
に至る間の送水系統に並列して設けたバイパス管内に、
処理水タンク内に投入した消毒液又は洗浄液を前記送水
ポンプによって逆流させることによって、前記加圧ポン
プ、逆浸透モジュール及び処理水タンクを経て前記透析
用水の使用側に至る送水経路を消毒液又は洗浄液で満た
し、所定時間放置の後、消毒液又は洗浄液を系外に排出
して経路内を浄化することを特徴とする透析用水製造装
置の浄化法。 【請求項３】 透析用原水の前処理水を加圧ポンプによ
って逆浸透モジュールに通して精製し、得た精製水を処
理水タンクに貯留して送水ポンプで透析用水の使用側に
向けて供給する透析用水製造装置の浄化に際し、下記
（１）及び（２）の手段を実施することを特徴とする透
析用水製造装置の浄化法。 （１）前記加圧ポンプの入口側から前記送水ポンプ後の
透析用水の使用側に至る間の送水系統に並列して設けた
バイパス管内に、処理水タンク内の精製水を送水ポンプ
によって逆流させて該精製水を加圧ポンプ、逆浸透モジ
ュールを通して逆浸透モジュールの出口送水管から分岐
した排水管を通じて系外に排出することによりバイパス
管内の滞留水を適宜に排出する手段。 （２）処理水タンク内に消毒液又は洗浄液を投入し、該
消毒液又は洗浄液を前記送水ポンプによってバイパス管
内に逆流させて前記加圧ポンプ、逆浸透モジュール及び
処理水タンクを経て前記透析用水の使用側に至る送水経
路を消毒液又は洗浄液で満たして所定時間放置の後、消
毒液又は洗浄液を系外に排出して該経路内を浄化する手
段。Claims 1. Pretreatment water for dialysis raw water is purified by passing it through a reverse osmosis module by a pressure pump, and the obtained purified water is stored in a treatment water tank, and dialysis water is supplied by a water supply pump. In the dialysis water production apparatus to be supplied toward the use side, in a bypass pipe provided in parallel with a water supply system from the inlet side of the pressure pump to the use side of the dialysis water after the water supply pump,
By causing the purified water in the treated water tank to flow backward by the water supply pump, the water retained in the bypass pipe together with the purified water is pumped out of the system through a drainage pipe branched from the outlet water supply pipe of the reverse osmosis module through a pressure pump and a reverse osmosis module. A method for purifying a dialysis water producing apparatus, comprising discharging the water. 2. Pretreatment water of dialysis raw water is purified by passing it through a reverse osmosis module by a pressure pump, and the purified water obtained is stored in a treatment water tank and supplied to a use side of the dialysis water by a water supply pump. In the dialysis water producing apparatus, in the bypass pipe provided in parallel with the water supply system from the inlet side of the pressure pump to the use side of the dialysis water after the water supply pump,
The disinfecting solution or cleaning liquid supplied into the treated water tank is caused to flow backward by the water supply pump, so that a disinfecting solution or cleaning liquid is supplied to the water supply path from the pressure pump, the reverse osmosis module and the treated water tank to the use side of the dialysis water. And purifying the inside of the channel by discharging a disinfecting solution or a cleaning solution outside the system after leaving for a predetermined time. 3. The pre-treated water for dialysis raw water is purified by passing it through a reverse osmosis module by a pressure pump, and the obtained purified water is stored in a treated water tank and supplied to a use side of the dialysis water by a water supply pump. A method for purifying a dialysis water producing apparatus, characterized by performing the following means (1) and (2) when purifying the dialysis water producing apparatus. (1) The purified water in the treated water tank is caused to flow backward by a water supply pump into a bypass pipe provided in parallel with a water supply system from an inlet side of the pressure pump to a use side of the dialysis water after the water supply pump. Means for discharging the accumulated water in the bypass pipe appropriately by discharging the purified water out of the system through a drainage pipe branched from an outlet water pipe of the reverse osmosis module through a pressure pump and a reverse osmosis module. (2) Disinfecting solution or washing solution is put into the treated water tank, and the disinfecting solution or washing solution is caused to flow back into the bypass pipe by the water supply pump, and the dialysis water is passed through the pressure pump, the reverse osmosis module and the treated water tank. A means for filling a water supply path to the use side with a disinfectant or a cleaning liquid and leaving it for a predetermined time and then discharging the disinfectant or the cleaning liquid out of the system to purify the inside of the path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08205751A JP3128642B2 (en) | 1996-08-05 | 1996-08-05 | Purification method for water production equipment for dialysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08205751A JP3128642B2 (en) | 1996-08-05 | 1996-08-05 | Purification method for water production equipment for dialysis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1043758A true JPH1043758A (en) | 1998-02-17 |
| JP3128642B2 JP3128642B2 (en) | 2001-01-29 |
Family
ID=16512062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08205751A Expired - Lifetime JP3128642B2 (en) | 1996-08-05 | 1996-08-05 | Purification method for water production equipment for dialysis |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3128642B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001353214A (en) * | 2000-06-14 | 2001-12-25 | Toray Medical Co Ltd | Dialysis system |
| JP2013145252A (en) * | 2013-04-30 | 2013-07-25 | Sysmex Corp | Reagent preparation device, specimen measurement device and reagent preparation method |
| CN107281570A (en) * | 2017-07-27 | 2017-10-24 | 北京海洁海斯健康科技有限公司 | The self-cleaning system of new haemodialysis control unit |
| CN110316888A (en) * | 2019-07-05 | 2019-10-11 | 广州奥立医疗设备有限公司 | A kind of cabinet type Pure water treatment equipment of self-loopa disinfection |
| WO2020004272A1 (en) * | 2018-06-28 | 2020-01-02 | 日機装株式会社 | Water treatment system |
-
1996
- 1996-08-05 JP JP08205751A patent/JP3128642B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001353214A (en) * | 2000-06-14 | 2001-12-25 | Toray Medical Co Ltd | Dialysis system |
| JP2013145252A (en) * | 2013-04-30 | 2013-07-25 | Sysmex Corp | Reagent preparation device, specimen measurement device and reagent preparation method |
| CN107281570A (en) * | 2017-07-27 | 2017-10-24 | 北京海洁海斯健康科技有限公司 | The self-cleaning system of new haemodialysis control unit |
| WO2020004272A1 (en) * | 2018-06-28 | 2020-01-02 | 日機装株式会社 | Water treatment system |
| CN110316888A (en) * | 2019-07-05 | 2019-10-11 | 广州奥立医疗设备有限公司 | A kind of cabinet type Pure water treatment equipment of self-loopa disinfection |
| CN110316888B (en) * | 2019-07-05 | 2024-05-07 | 广州奥立医疗设备有限公司 | Self-circulation disinfection cabinet type pure water treatment equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3128642B2 (en) | 2001-01-29 |
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| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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