JPH09294986A - Sea water desalination plant - Google Patents

Sea water desalination plant

Info

Publication number
JPH09294986A
JPH09294986A JP8110781A JP11078196A JPH09294986A JP H09294986 A JPH09294986 A JP H09294986A JP 8110781 A JP8110781 A JP 8110781A JP 11078196 A JP11078196 A JP 11078196A JP H09294986 A JPH09294986 A JP H09294986A
Authority
JP
Japan
Prior art keywords
sea water
seawater
desalination plant
sodium hypochlorite
chlorine generator
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.)
Withdrawn
Application number
JP8110781A
Other languages
Japanese (ja)
Inventor
Takayoshi Iwatou
任善 岩藤
Motohiro Hagiwara
基弘 萩原
Koji Hiramoto
康治 平本
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP8110781A priority Critical patent/JPH09294986A/en
Publication of JPH09294986A publication Critical patent/JPH09294986A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination
    • Y02A20/131—Reverse-osmosis
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination
    • Y02A20/138—Water desalination using renewable energy
    • Y02A20/144—Wave energy

Landscapes

  • Water Treatment By Electricity Or Magnetism (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

PROBLEM TO BE SOLVED: To reduce the power consumption of a chlorine generator by providing the chlorine generator for electrolyzing condensed drain to be drained out of a sea water desalination plant and forming sodium hypochlorite and a pipeline for injecting sodium hypochlorite thus formed into a water feed system to the sea water desalination plant. SOLUTION: Sea water collected by a sea water feed pump 1 of a sea water desalination plant is desalinated by a sea water desalination device 2, and raw water is fed to a site to be fed by a raw water feed pipe 3. On the other hand, condensed sea water condensed by the sea water desalination device 2 is pumped up by a condensed sea water pump 4 used combinedly as a sea water pressure rising pump, and the pressure is raised and the sea water is fed into a chlorine generator 5, wherein electrolysis is carried out to form sodium hypochlorite. The sodium hypochlorite is passed through piping 7 and injected into a water feed system of the sea water desalination plant to prevent the adhesion of marine products. Also the power consumption of the chlorine generator 5 can be reduced by forming the sodium chloride as above-mentioned.

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】本発明は、海水淡水化装置へ
の給水系統に注入される次亜塩素酸ナトリウム（ＮａＯ
Ｃｌ）を発生させる電力を低減することができるように
した海水淡水化プラントに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to sodium hypochlorite (NaO) injected into a water supply system for a seawater desalination apparatus.
The present invention relates to a seawater desalination plant capable of reducing electric power that generates Cl).

【０００２】[0002]

【従来の技術】海水淡水化プラントにおいては、海水淡
水化装置の海水取水管などの給水（海水）系統には、貝
類などの海洋生成物が付着するのを防止するため塩素の
化合物である次亜塩素酸ナトリウム（ＮａＯＣｌ）を注
入する。2. Description of the Related Art In a seawater desalination plant, a chlorine compound is used to prevent sea products such as shellfish from adhering to a water supply (seawater) system such as a seawater intake pipe of a seawater desalination plant. Inject sodium chlorite (NaOCl).

【０００３】次亜塩素酸ナトリウムは、遊離の酸素を発
生し強い酸化性を示し殺菌力があり、消毒剤、防臭剤、
漂白剤などにも使われている。またその製法としては、
塩素発生装置で海水を無隔膜で電気分解する方法で生成
する方法が用いられている。Sodium hypochlorite generates free oxygen, exhibits strong oxidizing property and has bactericidal activity, and is a disinfectant, deodorant,
It is also used as a bleaching agent. In addition, as its manufacturing method,
A chlorine generator is used to generate seawater by electrolysis without a diaphragm.

【０００４】図２は、従来の海水淡水化プラントの電気
分解式の塩素発生装置廻りの系統図である。海水淡水化
プラントの海水供給ポンプ１１で取水された海水は、海
水淡水化装置１２で淡水化され原水として供給先に送水
される。また残渣としての濃縮海水は、濃縮海水ポンプ
１３により海に放出される。FIG. 2 is a system diagram around an electrolytic chlorine generator in a conventional seawater desalination plant. Seawater taken by the seawater supply pump 11 of the seawater desalination plant is desalinated by the seawater desalination apparatus 12 and sent to the supply destination as raw water. The concentrated seawater as a residue is discharged into the sea by the concentrated seawater pump 13.

【０００５】一方、次亜塩素酸ナトリウムの生成系統に
おいては、海水供給ポンプ１１で取水された海水を、海
水昇圧ポンプ１４で昇圧して塩素発生装置１５に送り、
ここで海水を電気分解して次亜塩素酸ナトリウムを生成
して海水淡水化装置１２の給水（海水）系統に注入す
る。なお符号１６は電気分解用の整流器である。On the other hand, in the sodium hypochlorite production system, the seawater taken in by the seawater supply pump 11 is pressurized by the seawater booster pump 14 and sent to the chlorine generator 15.
Here, seawater is electrolyzed to generate sodium hypochlorite, which is injected into the water supply (seawater) system of the seawater desalination apparatus 12. Reference numeral 16 is a rectifier for electrolysis.

【０００６】[0006]

【発明が解決しようとする課題】前記の従来の海水淡水
化プラントに用いられる次亜塩素酸ナトリウム（ＮａＯ
Ｃｌ）は塩素発生装置で海水を電気分解して生成される
が、電気分解は多量の電力を消費するためランニングコ
スト（消費電力量）及び電気機器の設備、保修コストが
非常に高くつく。SUMMARY OF THE INVENTION Sodium hypochlorite (NaO) used in the above-mentioned conventional seawater desalination plant.
Cl) is generated by electrolyzing seawater with a chlorine generator, but since electrolysis consumes a large amount of electricity, running costs (power consumption) and equipment and maintenance costs of electric equipment are very high.

【０００７】本発明はこの問題点を解消するために提案
されたものである。The present invention has been proposed to solve this problem.

【０００８】[0008]

【課題を解決するための手段】本発明の海水淡水化プラ
ントは、海水淡水化装置から排出される濃縮排水を電気
分解して次亜塩素酸ナトリウムを生成する塩素発生装
置、及び同塩素発生装置で生成された次亜塩素酸ナトリ
ウムを海水淡水化装置への給水系統に注入する管路を備
えたことを特徴とする。A seawater desalination plant according to the present invention is a chlorine generator for electrolyzing concentrated wastewater discharged from a seawater desalination plant to produce sodium hypochlorite, and a chlorine generator. It is characterized in that it is provided with a pipe for injecting the sodium hypochlorite produced in the step 1 into the water supply system to the seawater desalination apparatus.

【０００９】従来海水淡水化装置から排出される濃縮海
水はそのまま海へ放出されていたが、本発明において
は、その排出される濃縮海水を塩素発生装置に送るの
で、装置への供給海水の塩分濃度は単に海水を供給する
のに比べて高い。塩素発生装置の消費電力は塩分濃度が
高い程少くてすむので、塩素発生装置の消費電力が低減
される。Conventionally, the concentrated seawater discharged from the seawater desalination apparatus was discharged to the sea as it is, but in the present invention, since the discharged concentrated seawater is sent to the chlorine generator, the salt content of the seawater supplied to the apparatus is increased. The concentration is higher than simply supplying seawater. The higher the salt concentration, the smaller the power consumption of the chlorine generator, so the power consumption of the chlorine generator is reduced.

【００１０】[0010]

【発明の実施の形態】本発明の実施の一形態を図１によ
って説明する。海水淡水化プラントの海水供給ポンプ１
で取水された海水は海水淡水化装置２で淡水化され、原
水は原水供給管３によって供給先に供給される。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIG. Seawater supply pump for seawater desalination plant 1
The seawater taken in is desalinated by the seawater desalination apparatus 2, and the raw water is supplied to the supply destination by the raw water supply pipe 3.

【００１１】一方海水淡水化装置２で濃縮された濃縮海
水は濃縮海水ポンプ兼海水昇圧ポンプ４によって汲み出
され昇圧されて塩素発生装置５へ送り込まれ、同塩素発
生装置５において交流電源を整流器６で整流した電流に
よって電気分解され次亜塩素酸ナトリウムを生成するよ
うになっている。On the other hand, the concentrated seawater concentrated in the seawater desalination apparatus 2 is pumped out by the concentrated seawater pump / seawater booster pump 4 and is pressurized to be sent to the chlorine generator 5, and in the chlorine generator 5, the AC power supply is rectified by the rectifier 6. It is electrolyzed by the current rectified in to produce sodium hypochlorite.

【００１２】この塩素発生装置５で生成された次亜塩素
酸ナトリウムは、塩素発生装置５に接続された管路７を
通って海水淡水化プラントの給水（海水）系統に注入さ
れ海洋生成物の付着防止に供せられる。The sodium hypochlorite produced in the chlorine generator 5 is injected into the feedwater (seawater) system of the seawater desalination plant through the pipe line 7 connected to the chlorine generator 5 to produce marine products. Used to prevent adhesion.

【００１３】本実施の形態では、以上の通り、塩分濃度
が高い海水淡水化装置２の濃縮海水を塩素発生装置５へ
送り込んで電気分解して次亜塩素酸ナトリウムを生成す
るようにしているので、塩素発生装置５の消費電力を低
減させることができる。In this embodiment, as described above, the concentrated seawater of the seawater desalination apparatus 2 having a high salt concentration is sent to the chlorine generation apparatus 5 and electrolyzed to generate sodium hypochlorite. The power consumption of the chlorine generator 5 can be reduced.

【００１４】[0014]

【発明の効果】本発明は、僅かなシステム替えを行うこ
とによって、海水淡水化プラントにおいて次亜塩素酸ナ
トリウムを生成する塩素発生装置の消費電力を低減する
ことができ、装置のランニングコスト低減の効果があ
る。また、海水淡水化装置と塩素発生装置の全体として
のシステムの簡素化を図ることができ、コンパクト化と
設備コストのダウンの効果を奏することができる。INDUSTRIAL APPLICABILITY The present invention can reduce the power consumption of the chlorine generator that produces sodium hypochlorite in a seawater desalination plant by slightly changing the system, and reduce the running cost of the device. effective. In addition, it is possible to simplify the system as a whole of the seawater desalination apparatus and the chlorine generation apparatus, and it is possible to achieve the effects of downsizing and cost reduction of equipment.

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

【図１】本発明の実施の一形態の系統図である。FIG. 1 is a system diagram of an embodiment of the present invention.

【図２】従来の海水淡水化プラントの系統図である。FIG. 2 is a system diagram of a conventional seawater desalination plant.

【符号の説明】[Explanation of symbols]

１ 海水供給ポンプ ２ 海水淡水化装置 ３ 原水供給管 ４ 濃縮海水ポンプ兼海水昇圧ポンプ ５ 塩素発生装置 ６ 整流器 ７ 管路 1 Seawater Supply Pump 2 Seawater Desalination Device 3 Raw Water Supply Pipe 4 Concentrated Seawater Pump / Seawater Booster Pump 5 Chlorine Generator 6 Rectifier 7 Pipeline

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 海水淡水化装置から排出される濃縮排水
を電気分解して次亜塩素酸ナトリウムを生成する塩素発
生装置及び同塩素発生装置で生成された次亜塩素酸ナト
リウムを海水淡水化装置への給水系統に注入する管路を
備えたことを特徴とする海水淡水化プラント。1. A chlorine generator for electrolyzing concentrated wastewater discharged from a seawater desalination plant to produce sodium hypochlorite, and a sodium hypochlorite produced by the chlorine generator for desalination of seawater. Seawater desalination plant, which is equipped with a pipe for injecting into the water supply system to
JP8110781A 1996-05-01 1996-05-01 Sea water desalination plant Withdrawn JPH09294986A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8110781A JPH09294986A (en) 1996-05-01 1996-05-01 Sea water desalination plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8110781A JPH09294986A (en) 1996-05-01 1996-05-01 Sea water desalination plant

Publications (1)

Publication Number Publication Date
JPH09294986A true JPH09294986A (en) 1997-11-18

Family

ID=14544460

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8110781A Withdrawn JPH09294986A (en) 1996-05-01 1996-05-01 Sea water desalination plant

Country Status (1)

Country Link
JP (1) JPH09294986A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6411443B1 (en) 1997-01-28 2002-06-25 Olympus Optical Co., Ltd. Zoom optical system
JP2003275761A (en) * 2002-03-19 2003-09-30 Kurita Water Ind Ltd Treating method and treating apparatus for cooling water
KR20150116914A (en) 2010-11-22 2015-10-16 미츠비시 쥬코 칸쿄 카가쿠 엔지니어링 가부시키가이샤 Seawater electrolysis system and seawater electrolysis method
WO2020217372A1 (en) * 2019-04-25 2020-10-29 日本郵船株式会社 Ballast water treatment system and ship comprising same
KR20210111673A (en) 2020-03-03 2021-09-13 가부시키가이샤 사사꾸라 Method of seawater treatment and seawater treatment system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6411443B1 (en) 1997-01-28 2002-06-25 Olympus Optical Co., Ltd. Zoom optical system
JP2003275761A (en) * 2002-03-19 2003-09-30 Kurita Water Ind Ltd Treating method and treating apparatus for cooling water
KR20150116914A (en) 2010-11-22 2015-10-16 미츠비시 쥬코 칸쿄 카가쿠 엔지니어링 가부시키가이샤 Seawater electrolysis system and seawater electrolysis method
WO2020217372A1 (en) * 2019-04-25 2020-10-29 日本郵船株式会社 Ballast water treatment system and ship comprising same
JPWO2020217372A1 (en) * 2019-04-25 2021-12-23 日本郵船株式会社 Ballast water treatment system and ships equipped with it
KR20210111673A (en) 2020-03-03 2021-09-13 가부시키가이샤 사사꾸라 Method of seawater treatment and seawater treatment system

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