JP2019166470A - Pure water production apparatus - Google Patents

Pure water production apparatus Download PDF

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JP2019166470A
JP2019166470A JP2018056364A JP2018056364A JP2019166470A JP 2019166470 A JP2019166470 A JP 2019166470A JP 2018056364 A JP2018056364 A JP 2018056364A JP 2018056364 A JP2018056364 A JP 2018056364A JP 2019166470 A JP2019166470 A JP 2019166470A
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pure water
fresh water
production apparatus
fresh
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JP6562105B1 (en
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章吾 高松
Shogo Takamatsu
章吾 高松
和巳 塚本
Kazumi Tsukamoto
和巳 塚本
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Kurita Water Industries Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
    • B01D61/44—Ion-selective electrodialysis
    • B01D61/46—Apparatus therefor
    • B01D61/48—Apparatus therefor having one or more compartments filled with ion-exchange material, e.g. electrodeionisation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/58—Multistep processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/38—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J2/00—Arrangements of ventilation, heating, cooling, or air-conditioning
    • B63J2/12—Heating; Cooling
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Ocean & Marine Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Urology & Nephrology (AREA)
  • Analytical Chemistry (AREA)
  • Molecular Biology (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Treatment Of Water By Ion Exchange (AREA)

Abstract

To provide a pure water production apparatus capable of stably producing pure water having high water quality.SOLUTION: A part of fresh water in a fresh water tank 1 is used as supply water of a low pressure boiler or a middle pressure boiler. The fresh water in the fresh water tank 1 is supplied through a pipe 2, a bulb 3, a water supply pump 4 and an MF membrane device 5 constituting a main system 10 to an RO device 6. Permeable water of the RO device 6 is supplied to an electric deionization device 11. A preliminary system 20 passes the fresh water from the fresh water tank 1 to an MF membrane device 25 with a pipe 21, a bulb 22 and a water supply pump 24, and passes the MF filtrate water to the ion exchange resin device 26 and deionizes the MF filtrate water to produce pure water.SELECTED DRAWING: Figure 1

Description

本発明は、純水製造装置に係り、特に船舶内の純水製造装置に好適な純水製造装置に関する。   The present invention relates to a pure water production apparatus, and more particularly to a pure water production apparatus suitable for a pure water production apparatus in a ship.

海洋を航行する船舶では、飲料水や生活用水等の水を確保することが重要となる。そこで船舶には、海水から蒸留等により淡水を造水する造水装置が搭載されていることが多い。また、造水装置で製造した淡水は飲料水等のほかボイラ給水としても使用されることがある（特許文献１）。   In ships that sail in the ocean, it is important to secure water such as drinking water and domestic water. Therefore, a ship is often equipped with a fresh water generator that produces fresh water from seawater by distillation or the like. Moreover, the fresh water manufactured with the fresh water generator may be used as boiler water supply other than drinking water etc. (patent document 1).

ここで、船内におけるボイラは例えば以下のような用途で用いられている。
（１） タービン船では過熱蒸気をタービンに供給する蒸気発生装置として主ボイラを設置する。
（２） ディーゼル船では、燃料、潤滑油、冷却清水の加熱、調理、給湯、暖房などのために大量の蒸気が必要であり、ディーゼル機関を補うために飽和蒸気を供給する補助ボイラを設置する。
（３） タンカー船では、カーゴタンク内の揮発性ガスを押し出すためのイナートガスとして酸素濃度≦５％のボイラ排気（不燃性）を供給するためのボイラを設置する。 Here, the boiler in a ship is used for the following uses, for example.
(1) In the turbine ship, a main boiler is installed as a steam generator for supplying superheated steam to the turbine.
(2) Diesel ships require a large amount of steam for heating, cooking, hot water supply, heating, etc. for fuel, lubricating oil, cooling fresh water, and install an auxiliary boiler that supplies saturated steam to supplement the diesel engine .
(3) In a tanker ship, a boiler for supplying boiler exhaust (non-combustible) with an oxygen concentration ≦ 5% is installed as an inert gas for pushing out the volatile gas in the cargo tank.

従来はいずれの用途においても船内ボイラとして低圧・中圧ボイラが主に用いられている。この場合は、ボイラ給水として淡水を用いたときに淡水の水質が運転不良につながるケースは顕在化しにくい。
ここで、特にタービン船は蒸気タービンを稼働するための蒸気を主にボイラで製造する必要があり燃費へのボイラ稼働台数の影響が大きい。そこで近年、ボイラとして高圧ボイラを使用して１台の高圧ボイラで複数の蒸気タービンを稼働することで、ボイラ稼働台数を削減して燃費の改善を図る取組みが検討されている。 Conventionally, low-pressure / medium-pressure boilers are mainly used as inboard boilers in any application. In this case, when fresh water is used as boiler feed water, the case where the quality of fresh water leads to poor operation is difficult to be realized.
Here, in particular, a turbine ship needs to manufacture steam for operating a steam turbine mainly by a boiler, and the influence of the number of operating boilers on fuel efficiency is great. Therefore, in recent years, an approach for reducing fuel consumption by reducing the number of operating boilers by using a high-pressure boiler as a boiler and operating a plurality of steam turbines with one high-pressure boiler has been studied.

しかし、船内ボイラとして高圧ボイラを使用する場合は、ボイラ給水が高温であるため水質の悪さ（例えば腐食性）がボイラの運転不良に繋がりやすい。ボイラが運転不良となったときの影響が甚大であることから、ボイラ給水の水質を淡水からさらに高度化して、脱塩していわゆる純水を製造して純水をボイラ給水として使用することが望ましいと考えられる。   However, when a high-pressure boiler is used as an inboard boiler, since the boiler feed water is hot, poor water quality (for example, corrosiveness) tends to lead to poor operation of the boiler. Because the impact when a boiler becomes inoperable is enormous, it is possible to further improve the quality of boiler feedwater from fresh water, desalinate to produce so-called pure water, and use pure water as boiler feedwater It is considered desirable.

ボイラ用純水製造装置として、ＵＦ膜装置とＲＯ装置と電気膜イオンとを直列に設置したものが知られている（特許文献２）。   As a pure water production apparatus for boilers, a device in which a UF membrane device, an RO device, and electric membrane ions are installed in series is known (Patent Document 2).

特開２００７−１３２２２７号公報JP 2007-132227 A 特開２００３−１３６０６５号公報Japanese Patent Laid-Open No. 2003-136065

通常の場合、船内には交換部品が保管されていないので、航行中に純水製造装置が部品の劣化、損傷、閉塞等によって運転不良になっても、部品を交換できず、運転不良を解消できない。   Normally, no replacement parts are stored in the ship, so even if the pure water production equipment becomes inoperable due to deterioration, damage, blockage, etc. during navigation, the parts cannot be replaced, eliminating the inconvenience. Can not.

本発明は、安定して高い水質の純水を製造することができる純水製造装置を提供することを目的とする。   An object of this invention is to provide the pure water manufacturing apparatus which can manufacture the pure water of high water quality stably.

本発明の純水製造装置は、被処理水を処理して純水を製造する主系列を有する純水製造装置において、該主系列と並列に、純水製造用の予備系列を設置したことを特徴とする。   The pure water production apparatus of the present invention is a pure water production apparatus having a main series for producing pure water by treating water to be treated. Features.

本発明の一態様の純水製造装置は、船舶搭載用である。   The pure water manufacturing apparatus according to one embodiment of the present invention is for ship use.

本発明の一態様では、前記予備系列はイオン交換樹脂装置を有する。   In one aspect of the present invention, the preliminary series includes an ion exchange resin device.

本発明の一態様では、前記主系列は、ＲＯ装置及び該ＲＯ装置の透過水を処理する電気脱イオン装置を有する。   In one aspect of the present invention, the main series includes an RO device and an electrodeionization device that processes permeated water of the RO device.

本発明の純水製造装置は、予備系列を備えるので、主系列が故障したときに直ちにバックアップとして予備系列により純水製造を続行することができる。   Since the deionized water production apparatus of the present invention includes a preliminary sequence, it is possible to continue the deionized water production using the preliminary sequence as a backup immediately when the main sequence fails.

本発明の純水製造装置を搭載した船舶は、純水製造装置の主系列が故障したときでも、本系列の故障を修理することなく、次の寄港地まで航行できる。   A ship equipped with the pure water production apparatus of the present invention can navigate to the next port of call without repairing the malfunction of this series even when the main series of the pure water production apparatus fails.

実施の形態に係る純水製造装置の構成図である。It is a block diagram of the pure water manufacturing apparatus which concerns on embodiment. 実施の形態に係る純水製造装置の制御フローチャートである。It is a control flowchart of the pure water manufacturing apparatus which concerns on embodiment.

図１は実施の形態に係る純水製造装置を示すものである。海水を蒸留して得られた淡水が淡水タンク１内に導入される。この淡水タンク１内の淡水の一部は、低圧ボイラ又は中圧ボイラの給水として用いられる。淡水タンク１内の淡水は、主系列１０を構成する配管２、バルブ３、給水ポンプ４及びＭＦ膜装置５を介してＲＯ（逆浸透）装置６へ供給される。ＲＯ装置６の濃縮水は、配管７を介して淡水タンク１に返送され、その一部は配管７から分岐したブロー配管８及びブロー弁９を介して系外に排出される。   FIG. 1 shows a pure water production apparatus according to an embodiment. Fresh water obtained by distilling seawater is introduced into the fresh water tank 1. A part of the fresh water in the fresh water tank 1 is used as water supply for a low pressure boiler or an intermediate pressure boiler. Fresh water in the fresh water tank 1 is supplied to an RO (reverse osmosis) device 6 through a pipe 2, a valve 3, a feed water pump 4, and an MF membrane device 5 constituting the main series 10. The concentrated water of the RO device 6 is returned to the fresh water tank 1 through the pipe 7, and a part thereof is discharged out of the system through the blow pipe 8 and the blow valve 9 branched from the pipe 7.

ＲＯ装置６の透過水は、電気脱イオン装置１１に供給される。電気脱イオン装置１１は、特許文献２の通り、陰極及び陽極と、該陰極と陽極の間に配列された複数のカチオン交換膜及びアニオン交換膜と、これらの膜同士の間に形成された濃縮室及び脱塩室と、該脱塩室に充填されたイオン交換体と、該陽極と陰極との間に電圧を印加する電源装置とを有する。ＲＯ透過水は、該脱塩室を通過する間に脱イオン処理され、純水となる。この純水は、配管１２及びバルブ１３を介して一部が取り出され、高圧ボイラ等の給水として使用される。純水の残部は、配管１５を介して淡水タンク１へ返送される。   The permeated water of the RO device 6 is supplied to the electrodeionization device 11. As in Patent Document 2, the electrodeionization apparatus 11 includes a cathode and an anode, a plurality of cation exchange membranes and anion exchange membranes arranged between the cathode and anode, and a concentration formed between these membranes. A chamber, a desalting chamber, an ion exchanger filled in the desalting chamber, and a power supply device for applying a voltage between the anode and the cathode. The RO permeated water is deionized while passing through the desalting chamber to become pure water. Part of this pure water is taken out via the pipe 12 and the valve 13 and used as water supply for a high-pressure boiler or the like. The remaining pure water is returned to the fresh water tank 1 via the pipe 15.

以上が主系列１０である。電気脱イオン装置１１からの純水の水質（比抵抗又は電気伝導度など）が比抵抗計、電気伝導度計などのセンサで計測されると共に、電気脱イオン装置１１からの純水流量が流量センサで計測され、これらのセンサの検出信号が制御器（図示略）に入力される。該制御器は、以上の主系列１０の運転の間中、純水の水質及び水量を監視しており、図２の通り、水質及び水量の少なくとも一方が所定期間以上、設定値を下回る（水質が悪い又は水量が少ない）場合には、主系列１０に何らかの異常が生じたものと判断し、純水製造装置の管理部門に衛星通信システム等を利用して異常を通知すると共に、予備系列２０による純水製造を開始させる。   The above is the main series 10. The quality of pure water (such as specific resistance or electrical conductivity) from the electrodeionization device 11 is measured by a sensor such as a resistivity meter or an electric conductivity meter, and the flow rate of pure water from the electrodeionization device 11 is a flow rate. Measurement is performed by sensors, and detection signals from these sensors are input to a controller (not shown). The controller monitors the quality and quantity of pure water during the operation of the main series 10 as described above, and as shown in FIG. 2, at least one of the quality and quantity of water is below a set value for a predetermined period or longer (water quality If the water quality is poor or the amount of water is small), it is determined that some abnormality has occurred in the main series 10, and the management department of the pure water production apparatus is notified of the abnormality using a satellite communication system or the like, and the spare series 20 Started the production of pure water.

予備系列２０は、淡水タンク１からの淡水を配管２１、バルブ２２、配管２３及び給水ポンプ２４によってＭＦ膜装置２５に通水し、ＭＦ濾過水をイオン交換樹脂装置２６に通水して脱イオン処理して純水を製造するよう構成されている。予備系列２０からの純水は配管２７からバルブ２９Ａ、前記配管１２，１５を介して淡水タンク１へ返送され、使用時はバルブ１３を開きバルブ１３を介して一部が取り出される。   In the preliminary series 20, fresh water from the fresh water tank 1 is passed through the MF membrane device 25 by the pipe 21, the valve 22, the pipe 23, and the water supply pump 24, and the MF filtered water is passed through the ion exchange resin device 26 for deionization. It is configured to produce pure water by processing. Pure water from the preliminary line 20 is returned from the pipe 27 to the fresh water tank 1 through the valve 29A and the pipes 12 and 15, and when used, the valve 13 is opened and a part is taken out through the valve 13.

予備系列２０を作動させる場合、主系列１０を停止し、純水製造装置で製造する純水の全量を予備系列２０で製造してもよく（バルブ３，２９Ｂを閉、バルブ２２，２９Ａを開、バルブ１３は使用時のみ開とする。）、主系列１０及び予備系列２０の双方を作動させ、主系列１０からの純水と予備系列２０からの純水とを合流させて取り出してもよい（バルブ２９Ｂを閉、バルブ３，２２，２９Ａを開、バルブ１３は使用時のみ開とする。）。   When the standby system 20 is operated, the main system 10 may be stopped and the entire pure water produced by the pure water production apparatus may be manufactured by the preliminary system 20 (valves 3 and 29B are closed and valves 22 and 29A are opened). The valve 13 is opened only during use.) Both the main series 10 and the standby series 20 are operated, and the pure water from the main series 10 and the pure water from the backup series 20 may be merged and taken out. (Valve 29B is closed, valves 3, 22, 29A are opened, and valve 13 is opened only when in use.)

このように、主系列１０と並列に予備系列２０を設置しているので、主系列１０にトラブルが生じた場合でも純水を安定して製造することができる。また、高圧ボイラに純水が安定して供給されるので、船舶を次の寄港地まで航行させることができる。   As described above, since the spare series 20 is installed in parallel with the main series 10, even when a trouble occurs in the main series 10, pure water can be stably produced. In addition, since pure water is stably supplied to the high-pressure boiler, the ship can be navigated to the next port of call.

上記実施の形態では、淡水タンク１内の淡水を予備系列２０へ供給する配管２１は淡水タンク１に直接に接続されているが、該配管２１は配管２から分岐されてもよい。   In the above embodiment, the pipe 21 for supplying the fresh water in the fresh water tank 1 to the standby system 20 is directly connected to the fresh water tank 1, but the pipe 21 may be branched from the pipe 2.

上記実施の形態ではＭＦ膜装置５が用いられているが、ＵＦ膜装置が用いられてもよい。また、これらの膜装置は省略されてもよい。図１では、ＲＯ装置６は１段だけ図示されているが、２段以上に設置されてもよい。   In the above embodiment, the MF membrane device 5 is used, but a UF membrane device may be used. Also, these membrane devices may be omitted. In FIG. 1, only one stage of the RO device 6 is shown, but it may be installed in two or more stages.

なお、イオン交換樹脂装置２６は、省スペースである；立ち上がりが早い；原水水質の変動に耐えられる；メンテナンス作業が簡易または不要である等の特徴を有している。イオン交換樹脂装置は、電気脱イオン装置等に比べて、破過までの寿命が短いが、次の寄港地まで短期間だけ安定して脱塩処理できればよいので、予備系列２０にイオン交換樹脂装置を用いることができる。特に装置の単純化による省スペース化を図るため非再生型のイオン交換樹脂装置とすることが好ましい。   The ion exchange resin device 26 has features such as space saving; fast start-up; withstands fluctuations in raw water quality; and maintenance work is simple or unnecessary. The ion exchange resin apparatus has a shorter life until breakthrough compared to an electrodeionization apparatus or the like, but it is only necessary to stably demineralize for a short period until the next port of call. Can be used. In particular, in order to save space by simplifying the apparatus, it is preferable to use a non-regenerative ion exchange resin apparatus.

イオン交換樹脂装置としては１塔のみ、または２塔直列で配置すればよい。２塔の場合、カチオン交換→アニオン交換、アニオン交換→カチオン交換、アニオン・カチオン混合→アニオン・カチオン混合など各種の組み合わせを採用することができる。また、塔内に層状態でカチオン樹脂とアニオン樹脂を充填する方式や、塔内に水平遮水板で上室・下室に区分すると共に上室から排水して下室に導入する配管を設ける方式など１塔でカチオン交換・アニオン交換の２段処理を行うようにしてもよい。   As an ion exchange resin apparatus, only one tower or two towers may be arranged in series. In the case of two towers, various combinations such as cation exchange → anion exchange, anion exchange → cation exchange, anion / cation mixture → anion / cation mixture can be employed. In addition, the tower is filled with cationic resin and anion resin in a layered state, and the tower is divided into upper and lower chambers by horizontal water shielding plates, and piping is provided for draining from the upper chamber and introducing it into the lower chamber. A two-stage treatment of cation exchange / anion exchange may be performed in one tower such as a system.

さらに、より安定処理が求められる場合には、図１の通り予備系列においてＭＦ膜やＵＦ膜などにより膜濾過処理を行うことが好ましい。   Furthermore, when more stable treatment is required, it is preferable to perform membrane filtration treatment with an MF membrane, UF membrane, or the like in the preliminary series as shown in FIG.

このように主系列１０とは異なる除去メカニズムの予備系列２０を設置することにより、主系列と同じ原因でのトラブルを回避できるというメリットもある。   Thus, by installing the preliminary sequence 20 having a removal mechanism different from that of the main sequence 10, there is also an advantage that troubles caused by the same cause as the main sequence can be avoided.

主系列１０が正常運転している間は、予備系列は基本的に脱塩には使用せず、浸漬状態で通水停止してもよいが、菌の発生を抑制して、切替え後にすぐに採水できるように、配管２８を用いて予備系列内で水を循環させてスタンバイしておくことが好ましい（バルブ２２，２９Ａを閉、バルブ３，２９Ｂを開、バルブ１３は使用時のみ開とする。）。ただしこの場合、予備系列内の水温の上昇（５０℃超）やイオン交換樹脂からの溶出有機物の蓄積が懸念されるため、定期的に系外にブローするなどして水温や水質が所定範囲内になるよう制御するのが好ましい。また、配管２８からの戻り水を淡水タンク１に戻すと、大気中のＣＯ２が溶解した水を取込むことになりイオン交換樹脂に負荷がかかるので、配管２３に返送するのが好ましい。 While the main line 10 is operating normally, the preliminary line is basically not used for desalination and may be stopped in the soaked state. It is preferable to circulate water in the standby system using the piping 28 so that water can be collected and to stand by (valves 22 and 29A are closed, valves 3 and 29B are opened, and the valve 13 is opened only when in use. To do.) However, in this case, there is concern about the rise in water temperature (above 50 ° C.) in the preliminary system and the accumulation of organic substances eluted from the ion exchange resin. It is preferable to control so that. In addition, when the return water from the pipe 28 is returned to the fresh water tank 1, it takes in water in which atmospheric CO 2 is dissolved, and a load is applied to the ion exchange resin. Therefore, it is preferably returned to the pipe 23.

１ 淡水タンク
６ ＲＯ装置
１０ 主系列
１１ 電気脱イオン装置
２０ 予備系列
２６ イオン交換樹脂装置 DESCRIPTION OF SYMBOLS 1 Fresh water tank 6 RO apparatus 10 Main series 11 Electrodeionization apparatus 20 Preliminary series 26 Ion exchange resin apparatus

Claims (4)

被処理水を処理して純水を製造する主系列を有する純水製造装置において、該主系列と並列に、純水製造用の予備系列を設置したことを特徴とする純水製造装置。   A pure water producing apparatus having a main series for treating pure water to produce pure water, wherein a preliminary series for producing pure water is installed in parallel with the main series. 船舶搭載用である請求項１の純水製造装置。   The pure water production apparatus according to claim 1, which is for use on a ship. 前記予備系列はイオン交換樹脂装置を有する請求項１又は２の純水製造装置。   3. The pure water production apparatus according to claim 1, wherein the preliminary series includes an ion exchange resin apparatus. 前記主系列は、ＲＯ装置及び該ＲＯ装置の透過水を処理する電気脱イオン装置を有する請求項１〜３のいずれかの純水製造装置。   The pure water production apparatus according to any one of claims 1 to 3, wherein the main series includes an RO device and an electrodeionization device that processes permeated water of the RO device.
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JPS60187383A (en) * 1984-03-05 1985-09-24 Kansai Electric Power Co Inc:The Process for preventing sticking of organism
JP2000167593A (en) * 1998-12-03 2000-06-20 Kurita Water Ind Ltd Ultrapure water making apparatus and its operation method
JP2003312588A (en) * 2002-04-26 2003-11-06 Kawasaki Heavy Ind Ltd Gas turbine system for vessel provided with water purifying apparatus
JP2006502049A (en) * 2002-10-08 2006-01-19 ウォーター スタンダード カンパニー エルエルシー Movable desalination equipment and system and method for producing desalinated water
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