JPH10235368A - Disinfection of circulating type bath water - Google Patents

Disinfection of circulating type bath water

Info

Publication number
JPH10235368A
JPH10235368A JP9057072A JP5707297A JPH10235368A JP H10235368 A JPH10235368 A JP H10235368A JP 9057072 A JP9057072 A JP 9057072A JP 5707297 A JP5707297 A JP 5707297A JP H10235368 A JPH10235368 A JP H10235368A
Authority
JP
Japan
Prior art keywords
water
bath water
bath
circulating
halogenated
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
Application number
JP9057072A
Other languages
Japanese (ja)
Inventor
Shuichi Nomura
修一 野村
Takayuki Fujita
孝行 藤田
Yasuhiro Oka
恭宏 岡
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.)
Shikoku Chemicals Corp
Original Assignee
Shikoku Chemicals 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 Shikoku Chemicals Corp filed Critical Shikoku Chemicals Corp
Priority to JP9057072A priority Critical patent/JPH10235368A/en
Publication of JPH10235368A publication Critical patent/JPH10235368A/en
Pending legal-status Critical Current

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  • Control For Baths (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Filtration Of Liquid (AREA)

Abstract

PROBLEM TO BE SOLVED: To supply efficiently safely a chemical which emits active chlorine or active bromine to bath water in a circulating type bath. SOLUTION: In a circulating type bath, a circulating route 5 in which water in a bathtub 1 is taken out with a circulating pump 2, filtered, heated, and refluxed is provided, a portion of bath water in the circulating route is taken out, introduced to a chemical dissolves 8 in which a solid halogenated chemical is filled, the bath water is brought into contact with the solid haloganated chemical in the chemical dissolves 8 to dissolved the halogenated chemical, and the bath water containing the eluted halogenated chemical is refluxed to the bathtub 1.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】この発明は循環式風呂水の浄
化方法に関するものであり、風呂水に活性塩素または活
性臭素を放出しうる薬剤を効率良く安全に供給する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for purifying circulating bath water, and efficiently and safely supplies an agent capable of releasing active chlorine or active bromine to the bath water.

【0002】[0002]

【従来の技術】循環式風呂は、浴槽内の水を循環ポンプ
によって取り出し、濾過し、加熱して還流させる循環経
路を設け、風呂水の異物や雑菌を取り除きながら、浴湯
を40℃前後の温度程に保ち、いつでも入浴できるよう
にしたものであり、長期間水を入れ替えることなく使用
しうるので、近年急速に普及して来た。従来知られてい
る循環式風呂水の消毒は、オゾン浄化法、紫外線照射法
などによって行われているが、これらの方法では十分な
殺菌効果が得られず、一般細菌が繁殖して衛生上の問題
が生じており、特にレジオネラ属菌の存在が指摘され、
レジオネラ感染症の予防対策が急務とされている。活性
ハロゲン化薬剤を用いる風呂水の浄化方法として、特公
昭62−3803号公報に、ジクロロイソシアヌル酸ア
ルカリ金属塩を有効成分とする発泡性の速溶錠剤が開示
されているが、これは浴槽に直接活性ハロゲン化薬剤を
投与するものであって、取扱いが煩わしいばかりでな
く、投入後に活性ハロゲン濃度が上昇して不快臭を伴う
難点があった。
2. Description of the Related Art A circulating bath is provided with a circulating path for taking out water in a bathtub with a circulating pump, filtering, heating and refluxing the bath, removing the foreign matter and germs in the bath water, and keeping the bath water at around 40 ° C. It is maintained at a temperature and can be used for bathing at any time, and since it can be used without replacing water for a long time, it has rapidly spread in recent years. Conventionally known disinfection of circulating bath water is performed by the ozone purification method, ultraviolet irradiation method, etc., but these methods do not provide a sufficient bactericidal effect, and general bacteria grow to increase sanitation. A problem has arisen, especially the presence of Legionella spp.
Preventive measures against Legionella infection are urgently needed. As a method for purifying bath water using an active halogenating agent, Japanese Patent Publication No. 62-3803 discloses an effervescent fast-dissolving tablet containing an alkali metal dichloroisocyanurate as an active ingredient. The method involves administration of an active halogenated drug, which is not only troublesome to handle, but also has a disadvantage that the concentration of the active halogen is increased after the addition, resulting in an unpleasant odor.

【0003】[0003]

【発明が解決しようとする課題】循環式風呂は、風呂掃
除の頻度が少なくしかも水を節約できるメリットを有し
ているが、汚れを蓄積するため雑菌が増殖しやすい環境
にあり、効果的な殺菌処理を行う必要がある。この発明
は循環式風呂水の浄化方法に関するものであり、活性塩
素または活性臭素を放出する薬剤を風呂水に効率良く安
全に供給することを意図とし為されたものである。
The circulating bath has the advantage that bath cleaning is less frequent and water can be saved, but it is in an environment where germs tend to multiply due to accumulation of dirt, making it more effective. Sterilization must be performed. The present invention relates to a method for purifying circulating bath water, and is intended to efficiently and safely supply an agent that releases active chlorine or active bromine to bath water.

【0004】[0004]

【課題を解決するための手段】本発明者らは、浴槽内の
水を循環ポンプによって取り出し、濾過し、加熱して還
流させる循環経路を設けた循環式風呂において、循環経
路における風呂水の一部を取り出して固形ハロゲン化薬
剤を充填した薬剤溶解器に導き、薬剤溶解器内の固形ハ
ロゲン化薬剤に風呂水を接触させてハロゲン化薬剤を溶
解し、溶出したハロゲン化薬剤を含む風呂水を浴槽に還
流させることによって、所期の目的を達成しうることを
見い出し、本発明を完成するに至った。
Means for Solving the Problems The present inventors have found that in a circulating bath provided with a circulating path through which water in a bathtub is taken out by a circulating pump, filtered, heated and refluxed, one of bath water in the circulating path is provided. Take out the part and lead it to the medicine dissolver filled with solid halogenated medicine, contact the bath water with the solid halogenated medicine in the medicine dissolver to dissolve the halogenated medicine and remove the bath water containing the eluted halogenated medicine. It has been found that the intended purpose can be achieved by refluxing in the bathtub, and the present invention has been completed.

【0005】[0005]

【発明の実施の形態】本発明方法の実施に当たっては、
浴槽1内の水を循環ポンプ2によって取り出し、濾過機
3を通して濾過し、その濾液を加熱機4によって加熱し
て還流させる循環経路5を設けた循環式風呂において、
循環経路の循環ポンプ2と濾過機3の間において風呂水
を分流させ、薬剤溶解器8に至る分水管6に調節弁7を
設けて分水量を制御し、溶出したハロゲン化薬剤を含む
風呂水を加熱された風呂水に合流させて浴槽1へ還流す
る。なお、調節弁7は電磁開閉型のものが好適であり、
これを用いた場合には風呂水の汚れの状況に応じて予め
作動する時間を定めておき、薬剤溶解器8に対する通水
をタイマーセットによって自動的に行うことが可能とな
り、的確に風呂水の活性ハロゲン濃度を管理することが
できる。
DESCRIPTION OF THE PREFERRED EMBODIMENTS In carrying out the method of the present invention,
The water in the bathtub 1 is taken out by the circulation pump 2, filtered through the filter 3, and the filtrate is heated by the heater 4 and heated in the circulation bath 5 provided with a circulation path 5 for reflux.
Bath water is diverted between the circulation pump 2 and the filter 3 in the circulation path, and a control valve 7 is provided in a water pipe 6 leading to the chemical dissolver 8 to control the amount of water distribution, and the bath water containing the eluted halogenated drug is provided. Is combined with the heated bath water and refluxed to the bathtub 1. The control valve 7 is preferably of the electromagnetic opening and closing type.
When this is used, the operation time is determined in advance in accordance with the condition of bath water contamination, and water can be automatically passed to the chemical dissolver 8 by a timer set, so that the bath water can be accurately detected. Active halogen concentration can be controlled.

【0006】本発明方法において使用する固形ハロゲン
化薬剤は、水中で活性塩素または活性臭素を発生し、且
つ25℃の水100gに対する溶解度が3g以下の化合
物を打錠成型したものであり、代表的な固形ハロゲン化
薬剤としては、トリクロロイソシアヌル酸(溶解度1.
8g)、ジクロロイソシアヌル酸(溶解度0.8g)、
1−ブロモ−3−クロロ−5,5−ジメチルヒダントイ
ン(溶解度0.54g)、1,3−ジクロロ−5,5−
ジメチルヒダントイン(溶解度0.43g)等であり、
これらは単独あるいは2種以上を組合わせて使用され
る。これらを打錠成型する際には、公知の結合剤、賦形
剤、滑剤等を配合することが可能である。固形ハロゲン
化薬剤の打錠成型は、通常10g〜100gを単位とし
て面圧500〜1500kg/cm2 を負荷すれば良
い。汚れた風呂水に接触させるハロゲン化薬剤の濃度
は、その度合いに応じて、活性ハロゲン濃度換算で0.
1〜10.0mg/L、好ましくは0.3〜3.0mg
/Lの範囲になるように溶解すべきである。
The solid halogenated chemical used in the method of the present invention is a compound which generates active chlorine or active bromine in water and has a solubility of 3 g or less in 100 g of water at 25 ° C., which is formed by tableting. As a solid halogenating agent, trichloroisocyanuric acid (solubility 1.
8g), dichloroisocyanuric acid (solubility 0.8g),
1-bromo-3-chloro-5,5-dimethylhydantoin (solubility 0.54 g), 1,3-dichloro-5,5-
Dimethylhydantoin (solubility 0.43 g), etc.
These are used alone or in combination of two or more. When these are tableted, known binders, excipients, lubricants and the like can be blended. Tablet molding of a solid halogenated drug may be performed by applying a surface pressure of 500 to 1500 kg / cm 2 , usually in units of 10 g to 100 g. The concentration of the halogenated agent to be brought into contact with the dirty bath water is, in accordance with the degree, in terms of active halogen concentration of 0.1.
1 to 10.0 mg / L, preferably 0.3 to 3.0 mg
/ L should be dissolved.

【0007】図2は、本発明の実施に適する薬剤溶解器
の一例を示したものであり、円筒状本体の下部より少し
上がった一側に分水管6と連なる給水口9を設け、底面
中央部に吐出口10を設け、その底部に通水性不織布と
すのこ板からなる担持体11を介在させて、固形ハロゲ
ン化薬剤の錠剤12を多段状に整列したものである。
FIG. 2 shows an example of a chemical dissolver suitable for carrying out the present invention. A water supply port 9 connected to a water pipe 6 is provided on one side slightly above the lower part of the cylindrical main body. The solid halogenated medicine tablets 12 are arranged in a multi-stage manner with a discharge port 10 provided at the bottom and a carrier 11 made of a water-permeable nonwoven fabric and a sawboard interposed at the bottom.

【0008】[0008]

【実施例】以下、本発明を実施例及び参考例によって、
具体的に説明する。 〔実施例1〕図1に示した循環式風呂装置において、濾
過機3に姫砂2kgと顆粒状ゼオライト7kgを仕込
み、40〜42℃の温度でオン・オフするヒーターを備
えた加熱機3を配設し、薬剤溶解器8に直径30mm、
重さ20gのトリクロロイソシアヌル酸(活性塩素含有
量90%、打錠圧1200kg/cm2 )からなる円柱
状錠剤12を多段状に整列させて、浴槽1に約40℃の
温水200Lを入れ、循環ポンプ2を作動して、循環経
路5に風呂水を900L/hrの割合で循環させた。こ
の浴槽には毎日5時間以内に5人が入浴し、入浴終了後
直ちに電磁開閉型調節弁7を5分間開き、分水管6を通
じてその間に1Lの水を薬剤溶解器8に通水し、溶解し
たトリクロロイソシアヌル酸を含む水を、加熱された循
環水と合流させて浴槽に還流した。その後、調節弁7を
30分間閉じたのち再びこれを5分間開き、分水管6を
通じてその間に1Lの水を薬剤溶解器8に通水し、溶解
したトリクロロイソシアヌル酸を含む水を浴槽に還流さ
せた。このような操作を3日間繰り返し、その間におけ
る浴槽内の水の活性塩素濃度をDPD法(比色法)によ
って測定した結果は、表1に示したとおりであった。
EXAMPLES Hereinafter, the present invention will be described with reference to Examples and Reference Examples.
This will be specifically described. Example 1 In the circulation type bath apparatus shown in FIG. 1, 2 kg of princess sand and 7 kg of granular zeolite were charged into a filter 3 and a heater 3 equipped with a heater which was turned on and off at a temperature of 40 to 42 ° C. Is disposed, and the diameter of the drug dissolver 8 is 30 mm.
Cylindrical tablets 12 of 20 g of trichloroisocyanuric acid (active chlorine content: 90%, tableting pressure: 1200 kg / cm 2 ) are arranged in a multi-stage manner, and 200 L of hot water at about 40 ° C. is put into bathtub 1 and circulated. The pump 2 was operated to circulate bath water in the circulation path 5 at a rate of 900 L / hr. Five people take a bath in the bathtub within 5 hours every day. Immediately after the bathing is completed, the electromagnetic open / close control valve 7 is opened for 5 minutes, and 1 L of water is passed through the water separation pipe 6 to the chemical dissolver 8 to dissolve the bath. The water containing trichloroisocyanuric acid thus obtained was combined with the heated circulating water and refluxed to the bathtub. Thereafter, the control valve 7 is closed for 30 minutes, and then opened again for 5 minutes. During this time, 1 L of water is passed through the water separation pipe 6 to the drug dissolver 8, and the water containing the dissolved trichloroisocyanuric acid is returned to the bathtub. Was. Such an operation was repeated for three days, and the active chlorine concentration of the water in the bathtub during that period was measured by the DPD method (colorimetric method). The results are as shown in Table 1.

【0009】[0009]

【表1】 [Table 1]

【0010】また3日間経過したのち、薬剤溶解器内の
トリクロロイソシアヌル酸錠剤の減量を測定したとこ
ろ、1.4gであった。これらの試験によって、入浴終
了後の極めて短時間のうちに風呂水の殺菌消毒に必要な
所定量の活性塩素を浴槽内に均一に供給することがで
き、その際に活性塩素剤は徐々に溶けて活性塩素濃度の
異常な上昇が見られず、薬剤の投与を極めて安全に取り
扱いうることが判った。
After a lapse of three days, the weight loss of the trichloroisocyanuric acid tablet in the drug dissolver was measured and found to be 1.4 g. By these tests, a predetermined amount of active chlorine required for bath water disinfection can be uniformly supplied into the bathtub within a very short time after the end of bathing, and the active chlorine agent gradually dissolves at that time. As a result, no abnormal increase in the active chlorine concentration was observed, and it was found that the administration of the drug could be handled extremely safely.

【0011】〔実施例2〕実施例1において、トリクロ
ロイソシアヌル酸錠剤の代わりに直径30mm、重さ2
0gの1−ブロモ−3−クロロ−5,5-ジメチルヒダント
イン〔活性ハロゲン含有量(塩素換算)62%、打錠圧
1000kg/cm2 )を用いた以外は、全く同じよう
にして試験を繰り返したところ、その間における浴槽内
の水の活性ハロゲン濃度をDPD法(比色法)によって
測定した結果は、表2に示したとおりであった。
[Example 2] In Example 1, instead of the trichloroisocyanuric acid tablet, a diameter of 30 mm and a weight of 2 were used.
The test was repeated in exactly the same manner except that 0 g of 1-bromo-3-chloro-5,5-dimethylhydantoin [active halogen content (in terms of chlorine) 62%, tableting pressure 1000 kg / cm 2 ) was used. The active halogen concentration of water in the bathtub during that time was measured by the DPD method (colorimetric method), and the results are as shown in Table 2.

【0012】[0012]

【表2】 [Table 2]

【0013】3日間経過したのち、薬剤溶解器内の1−
ブロモ−3−クロロ−5,5-ジメチルヒダントイン錠剤の
減量を測定したところ1.9gであり、トリクロロイソ
シアヌル酸錠剤の場合と同様、入浴終了後の極めて短時
間のうちに風呂水の殺菌消毒に必要な所定量の活性塩素
を浴槽内に均一に供給することができ、薬剤の投与を極
めて安全に取り扱いうるものと認められた。
After 3 days, 1- in the drug dissolver
The weight loss of the bromo-3-chloro-5,5-dimethylhydantoin tablet was measured to be 1.9 g, similar to the case of the trichloroisocyanuric acid tablet. It was recognized that the required predetermined amount of active chlorine could be uniformly supplied into the bath, and the administration of the drug could be handled extremely safely.

【0014】〔参考例〕レジオネラニューモフィラEY
3465株をBCYEα寒天培地で培養、懸濁液とし、
これに固形ハロゲン化薬剤を活性ハロゲン濃度0.5m
g/Lに調製して、接触、混合させたのちBCYEα寒
天培地に塗布し、37℃で4日間培養を行い、本薬剤の
レジオネラ属菌に対する殺菌効果を求めた。得られた結
果を表3に示す。
Reference Example Legionella pneumophila EY
The 3465 strain was cultured on BCYEα agar medium to form a suspension,
A solid halogenating agent is added to this with an active halogen concentration of 0.5 m.
g / L, contacted and mixed, applied to a BCYEα agar medium, cultured at 37 ° C. for 4 days, and the bactericidal effect of this drug on Legionella was determined. Table 3 shows the obtained results.

【0015】[0015]

【表3】 [Table 3]

【0016】[0016]

【発明の効果】この発明によれば、循環式風呂水に活性
ハロゲンを放出する薬剤を短時間のうちに効率良く、極
めて安全に供給することができ、これらは殺菌作用を有
するので、短時間の処理で殺菌効果が発現し、レジオネ
ラ属菌などの感染症予防に有用なものと認められる。
According to the present invention, it is possible to efficiently and extremely safely supply the active halogen-releasing agent to the circulating bath water in a short period of time. , A bactericidal effect is exhibited by the treatment, and it is recognized that it is useful for preventing infectious diseases such as Legionella.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明方法の実施に適する循環式風呂装置の系
統図
FIG. 1 is a system diagram of a circulation type bath apparatus suitable for carrying out the method of the present invention.

【図2】本発明循環式風呂装置の薬剤溶解器を示す一部
を欠載した立面図
FIG. 2 is an elevational view of the circulation type bath apparatus according to the present invention, showing a part of the medicine dissolver which is not shown;

【符号の説明】[Explanation of symbols]

1 浴槽 2 循環ポンプ 3 濾過機 4 加熱機 5 循環経路 6 分水管 7 調節弁 8 薬剤溶解器 12 錠剤(固形ハロゲン化薬剤) DESCRIPTION OF SYMBOLS 1 Bathtub 2 Circulation pump 3 Filtration machine 4 Heater 5 Circulation path 6 Water pipe 7 Control valve 8 Drug dissolver 12 Tablet (solid halogenated drug)

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 FI C02F 1/50 560 C02F 1/50 560A 560Z A47K 3/00 A47K 3/00 K B01D 35/027 C02F 1/76 A C02F 1/76 B01D 35/02 J F24H 1/00 302 F24H 1/00 602L ──────────────────────────────────────────────────の Continuation of the front page (51) Int.Cl. 6 Identification code FI C02F 1/50 560 C02F 1/50 560A 560Z A47K 3/00 A47K 3/00 K B01D 35/027 C02F 1/76 A C02F 1 / 76 B01D 35/02 J F24H 1/00 302 F24H 1/00 602L

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 浴槽内の水を循環ポンプによって取り出
し、濾過し、加熱して還流させる循環経路を設けた循環
式風呂において、循環経路における風呂水の一部を取り
出して固形ハロゲン化薬剤を充填した薬剤溶解器に導
き、薬剤溶解器内の固形ハロゲン化薬剤に風呂水を接触
させてハロゲン化薬剤を溶解し、溶出したハロゲン化薬
剤を含む風呂水を浴槽に還流させることを特徴とする循
環式風呂水の消毒方法。
1. In a circulating bath provided with a circulating path for taking out water in a bathtub with a circulating pump, filtering, heating and refluxing, a part of bath water in the circulating path is taken out and filled with a solid halogenated agent. Circulation characterized by dissolving the halogenated drug by contacting the solid halogenated drug in the drug dissolver with bath water to dissolve the halogenated drug and returning the bath water containing the eluted halogenated drug to the bathtub How to disinfect bath water.
【請求項2】 循環経路の循環ポンプと濾過機の間にお
いて風呂水を分流し、薬剤溶解器に至る分水管に調節弁
を設けて分水量を制御し、溶出したハロゲン化薬剤を含
む風呂水を加熱された風呂水に合流させて浴槽へ還流す
る請求項1に記載の循環式風呂水の消毒方法。
2. A bath water which divides bath water between a circulation pump and a filter in a circulation path, controls a water distribution amount by providing a control valve in a water pipe leading to a chemical dissolver, and contains an eluted halogenated chemical. The method for disinfecting circulating bath water according to claim 1, wherein the water is mixed with heated bath water and refluxed to a bathtub.
【請求項3】 水中で活性塩素または活性臭素を発生
し、且つ25℃の水100gに対する溶解度が3g以下
の化合物を打錠成型した固形ハロゲン化薬剤を用いる請
求項1に記載の循環式風呂水の消毒方法。
3. A circulating bath water according to claim 1, wherein a solid halogenated agent which forms active chlorine or active bromine in water and has a solubility of 3 g or less in 100 g of water at 25 ° C. is tablet-formed. Disinfection method.
JP9057072A 1997-02-24 1997-02-24 Disinfection of circulating type bath water Pending JPH10235368A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9057072A JPH10235368A (en) 1997-02-24 1997-02-24 Disinfection of circulating type bath water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9057072A JPH10235368A (en) 1997-02-24 1997-02-24 Disinfection of circulating type bath water

Publications (1)

Publication Number Publication Date
JPH10235368A true JPH10235368A (en) 1998-09-08

Family

ID=13045262

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9057072A Pending JPH10235368A (en) 1997-02-24 1997-02-24 Disinfection of circulating type bath water

Country Status (1)

Country Link
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100437308B1 (en) * 2001-04-27 2004-06-25 산요덴키가부시키가이샤 Water treatment apparatus
JP2005219051A (en) * 1998-09-28 2005-08-18 Ebara Corp Method and apparatus for disinfecting waste water
JP2008096032A (en) * 2006-10-12 2008-04-24 Chugoku Electric Power Co Inc:The Hot water circulation type hot water supply system
KR200454922Y1 (en) * 2011-02-17 2011-08-04 최도광 Vehicle disinfection equipment
JP2012254402A (en) * 2011-06-08 2012-12-27 Kurita Water Ind Ltd System for treating ship ballast water
JP2013086046A (en) * 2011-10-20 2013-05-13 Japan Organo Co Ltd Slime prevention method for separation membrane and slime prevention device for the separation membrane
WO2021166628A1 (en) * 2020-02-18 2021-08-26 パナソニックIpマネジメント株式会社 Chemical agent dissolution device, water treatment system, and solid chemical agent cartridge

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005219051A (en) * 1998-09-28 2005-08-18 Ebara Corp Method and apparatus for disinfecting waste water
KR100437308B1 (en) * 2001-04-27 2004-06-25 산요덴키가부시키가이샤 Water treatment apparatus
JP2008096032A (en) * 2006-10-12 2008-04-24 Chugoku Electric Power Co Inc:The Hot water circulation type hot water supply system
KR200454922Y1 (en) * 2011-02-17 2011-08-04 최도광 Vehicle disinfection equipment
JP2012254402A (en) * 2011-06-08 2012-12-27 Kurita Water Ind Ltd System for treating ship ballast water
JP2013086046A (en) * 2011-10-20 2013-05-13 Japan Organo Co Ltd Slime prevention method for separation membrane and slime prevention device for the separation membrane
WO2021166628A1 (en) * 2020-02-18 2021-08-26 パナソニックIpマネジメント株式会社 Chemical agent dissolution device, water treatment system, and solid chemical agent cartridge

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