JP2022067738A - Floating contaminant recovery device and floating contaminant recovery system - Google Patents

Floating contaminant recovery device and floating contaminant recovery system Download PDF

Info

Publication number
JP2022067738A
JP2022067738A JP2020176498A JP2020176498A JP2022067738A JP 2022067738 A JP2022067738 A JP 2022067738A JP 2020176498 A JP2020176498 A JP 2020176498A JP 2020176498 A JP2020176498 A JP 2020176498A JP 2022067738 A JP2022067738 A JP 2022067738A
Authority
JP
Japan
Prior art keywords
fresh water
recovery
line
backwash
filter
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
JP2020176498A
Other languages
Japanese (ja)
Inventor
敦行 真鍋
Atsuyuki Manabe
将司 菊地
Shoji Kikuchi
泰朋 善万
Yasutomo Zenman
健 竹内
Takeshi Takeuchi
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.)
Miura Co Ltd
Mitsui OSK Lines Ltd
Original Assignee
Miura Co Ltd
Mitsui OSK Lines 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 Miura Co Ltd, Mitsui OSK Lines Ltd filed Critical Miura Co Ltd
Priority to JP2020176498A priority Critical patent/JP2022067738A/en
Priority to KR1020237005894A priority patent/KR20230093240A/en
Priority to CN202180051928.0A priority patent/CN116096629A/en
Priority to PCT/JP2021/038202 priority patent/WO2022085582A1/en
Publication of JP2022067738A publication Critical patent/JP2022067738A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/38—Feed or discharge devices
    • B01D24/44—Feed or discharge devices for discharging filter cake, e.g. chutes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
    • B01D29/94—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging the filter cake, e.g. chutes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/16—Cleaning-out devices, e.g. for removing the cake from the filter casing or for evacuating the last remnants of liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B13/00—Conduits for emptying or ballasting; Self-bailing equipment; Scuppers
    • 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
    • Y02A20/20—Controlling water pollution; Waste water treatment
    • Y02A20/204—Keeping clear the surface of open water from oil spills

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Filtration Of Liquid (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

To provide a floating contaminant recovery device capable of efficiently recovering floating contaminants from environmental water taken into a craft, and a floating contaminant recovery system.SOLUTION: A floating contaminant recovery device 40, which is mounted on a craft 2 and which recovers floating contaminants included in environmental water taken into the craft 2, comprises a recovery filter 41 arranged in a backwash drainage line L4 through which backwash drainage water after backwashing a filter 120 of a filtering apparatus 12 for filtering the environmental water is circulated, and fresh water supply means 50 for supplying fresh water to the recovery filter 41.SELECTED DRAWING: Figure 1

Description

本発明は、環境水から浮遊汚染物質を回収する浮遊汚染物質回収装置及び浮遊汚染物質回収システムに関する。 The present invention relates to a suspended pollutant recovery device and a suspended pollutant recovery system for recovering suspended pollutants from environmental water.

貨物船やタンカー等において船体姿勢や喫水を安全な状態に維持するために使われるバラスト水は、有害水生生物の越境移動による海洋生態系のかく乱を引き起こし、大きな環境問題となっている。バラスト水中の水生生物を一定基準以下にして排水する技術として例えば特許文献１がある。 Ballast water, which is used in cargo ships and tankers to maintain the hull posture and draft in a safe state, causes disturbance of the marine ecosystem due to the cross-border movement of harmful aquatic organisms, which has become a major environmental problem. For example, Patent Document 1 is a technique for draining aquatic organisms in ballast water below a certain standard.

特許文献１には、バラスト水処理システムの構成とは独立したモジュールで構成されるバラスト水濾過処理装置により、逆洗水を船外に排出することが可能なバラスティング時の１次濾過だけでなく、逆洗水を船外に排出することができないデバラスティングの際にも２次濾過及び差圧解消のための逆洗が行われるようにして海洋微生物の最終濾過率を高めることができることが記載されている。 Patent Document 1 describes only primary filtration during ballasting, which enables backwash water to be discharged outboard by a ballast water filtration treatment device composed of a module independent of the configuration of the ballast water treatment system. It is possible to increase the final filtration rate of marine microorganisms by performing secondary filtration and backwashing to eliminate differential pressure even during deballasting where backwash water cannot be discharged outboard. Have been described.

また、特許文献２や３は、取得された環境水から水生生物を取得する技術を開示している。例えば、特許文献２には、大きな貯留タンクを設ける必要がなく、容易に且つ連続してバラスト水を採取し、バラスト水中に含まれる水生生物を生きたままサンプリングできるとする、船舶バラスト水のサンプリングシステムが記載されている。特許文献３には、試料水を貯水する貯水部を前記試料水の供給側と排出側に仕切るフィルタが、前記供給側の面に鉛直方向下向きの力が作用しない配置とすることにより、微生物が大きなダメージを受けることがなく、該微生物の多くを生きたまま回収できるとする、微生物濃縮器が記載されている。 Further, Patent Documents 2 and 3 disclose a technique for acquiring aquatic organisms from the acquired environmental water. For example, in Patent Document 2, sampling of ship ballast water is such that it is not necessary to provide a large storage tank and ballast water can be easily and continuously collected and aquatic organisms contained in the ballast water can be sampled alive. The system is described. In Patent Document 3, microorganisms are arranged by arranging a filter that partitions a water storage portion for storing sample water between a supply side and a discharge side of the sample water so that a vertical downward force does not act on the surface on the supply side. Microbial concentrators have been described that allow many of the microorganisms to be recovered alive without major damage.

特開２０１８－１５３７９５号公報Japanese Unexamined Patent Publication No. 2018-153795 特開２００９－１１５５００号公報Japanese Unexamined Patent Publication No. 2009-115500 特開２０１５－１４５１６号公報Japanese Unexamined Patent Publication No. 2015-14516

プラスチック汚染は海洋ごみのかなりの部分を占め、ますます大きな脅威となりつつある。特にマイクロプラスチック等を含む浮遊汚染物質による海洋の汚染に対処することは、喫緊の課題となっている。船舶では、冷却用水及びバラスト水として大量の環境水が取水され排水されるものの、環境水に含まれる浮遊汚染物質を効果的に回収し、処理することは行われていない。 Plastic pollution accounts for a significant portion of marine debris and is becoming an ever-increasing threat. In particular, dealing with marine pollution caused by airborne pollutants including microplastics is an urgent issue. Although a large amount of environmental water is taken in and drained as cooling water and ballast water on ships, airborne pollutants contained in the environmental water are not effectively recovered and treated.

本発明は、船舶に取り込まれた環境水から浮遊汚染物質を効率的に回収できる浮遊汚染物質回収装置及び浮遊汚染物質回収システムを提供することを目的とする。 An object of the present invention is to provide a suspended pollutant recovery device and a suspended pollutant recovery system capable of efficiently recovering suspended pollutants from environmental water taken into a ship.

本発明は、船舶に取り付けられ、当該船舶に取り入れられる環境水に含まれる浮遊汚染物質を回収する浮遊汚染物質回収装置であって、環境水をろ過するろ過装置のフィルタを逆洗した後の逆洗排水が流通する逆洗排水ラインに配置される回収フィルタと、前記回収フィルタに清水を供給する清水供給手段と、を備える浮遊汚染物質回収装置に関する。 The present invention is a floating pollutant recovery device that is attached to a ship and collects airborne contaminants contained in the environmental water taken into the ship, and is the reverse after backwashing the filter of the filtration device that filters the environmental water. The present invention relates to a suspended pollutant recovery device including a recovery filter arranged in a backwash drainage line through which wash drainage flows, a fresh water supply means for supplying fresh water to the recovery filter, and a fresh water supply means.

前記清水供給手段は、前記回収フィルタの上流側に接続され、前記回収フィルタの上流側から該回収フィルタに清水を供給する清水順洗ラインを有することが好ましい。 It is preferable that the fresh water supply means is connected to the upstream side of the recovery filter and has a fresh water forward washing line that supplies fresh water to the recovery filter from the upstream side of the recovery filter.

前記清水供給手段は、前記回収フィルタの下流側に接続され、前記回収フィルタの下流側から該回収フィルタに清水を供給する清水逆洗ラインと、前記清水逆洗ラインから供給されて前記回収フィルタを逆洗した後の逆洗清水を排出する清水排水ラインと、前記清水排水ラインを流通する逆洗清水を回収する回収容器と、を有することが好ましい。 The fresh water supply means is connected to the downstream side of the recovery filter, and the fresh water backwash line that supplies fresh water to the recovery filter from the downstream side of the recovery filter and the recovery filter that is supplied from the freshwater backwash line. It is preferable to have a fresh water drainage line for discharging the backwashed fresh water after backwashing and a collection container for collecting the backwashed fresh water flowing through the freshwater drainage line.

前記浮遊汚染物質回収装置は、前記逆洗排水ラインにおける前記回収フィルタよりも上流側に配置され、該逆洗排水ラインを流通する逆洗排水に含まれる固形物を分離するセパレータを更に備えることが好ましい。 The suspended pollutant recovery device may be further provided with a separator which is arranged upstream of the recovery filter in the backwash drainage line and separates solid matter contained in the backwash drainage flowing through the backwash drainage line. preferable.

前記回収フィルタのろ過精度は、２００μｍ～８００μｍであることが好ましい。 The filtration accuracy of the recovery filter is preferably 200 μm to 800 μm.

また、本発明は、船舶に取り付けられ、当該船舶に取り入れられる環境水に含まれる浮遊汚染物質を回収する浮遊汚染物質回収システムであって、環境水を前記船舶に取り入れる取水ラインと、前記取水ラインに配置される取水ポンプと、前記取水ラインの下流側に配置され、該取水ラインを流通する環境水をろ過するフィルタを有するろ過装置と、前記ろ過装置においてろ過された処理水を貯留する処理水貯留タンクと、前記ろ過装置と前記処理水貯留タンクとを接続する処理水ラインと、前記ろ過装置に前記フィルタのろ過方向と逆方向から処理水を供給する逆洗ラインと、上流側が前記ろ過装置における前記フィルタよりも上流側に接続され、前記逆洗ラインから前記ろ過装置に供給された逆洗後の処理水である逆洗排水を排出する逆洗排水ラインと、前記逆洗排水ラインに配置される回収フィルタ及び前記回収フィルタに清水を供給する清水供給手段を有する浮遊汚染物質回収装置と、を備える浮遊汚染物質回収システムに関する。 Further, the present invention is a floating contaminant recovery system that is attached to a ship and recovers the suspended contaminants contained in the environmental water taken into the vessel, and is an intake line for taking the environmental water into the vessel and the intake line. A filtration device having an intake pump arranged in the water intake line, a filtration device arranged on the downstream side of the intake line and having a filter for filtering environmental water flowing through the intake line, and treated water for storing the treated water filtered by the filtration device. A treated water line connecting the storage tank, the filtration device and the treated water storage tank, a backwash line for supplying the treated water to the filtration device from the direction opposite to the filtration direction of the filter, and the filtration device on the upstream side. The backwash drainage line, which is connected to the upstream side of the filter in the above and discharges the backwash drainage which is the treated water after the backwash supplied from the backwash line to the filtration device, and the backwash drainage line are arranged. The present invention relates to a floating contaminant recovery system comprising a recovery filter to be collected and a floating contaminant recovery device having a fresh water supply means for supplying fresh water to the recovery filter.

本発明によれば、船舶に取り込まれた環境水から浮遊汚染物質を効率的に回収できる浮遊汚染物質回収装置及び浮遊汚染物質回収システムを提供できる。 INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a suspended pollutant recovery device and a suspended pollutant recovery system capable of efficiently recovering suspended pollutants from environmental water taken into a ship.

本発明の一実施形態に係る浮遊汚染物質回収システムを示す模式図である。It is a schematic diagram which shows the airborne pollutant recovery system which concerns on one Embodiment of this invention. 本実施形態の浮遊汚染物質回収装置の清水順洗処理の一例を示すフローチャートである。It is a flowchart which shows an example of the fresh water forward washing process of the airborne contaminants recovery apparatus of this embodiment. 本実施形態の浮遊汚染物質回収装置の清水逆洗処理の一例を示すフローチャートである。It is a flowchart which shows an example of the fresh water backwash process of the airborne contaminants recovery apparatus of this embodiment. 第１変形例の浮遊汚染物質回収システムを示す模式図である。It is a schematic diagram which shows the airborne pollutant recovery system of the 1st modification. 第２変形例の浮遊汚染物質回収システムを示す模式図である。It is a schematic diagram which shows the airborne pollutant recovery system of the 2nd modification.

以下、本発明の実施形態について、図面を参照しながら説明する。図１は、本発明の一実施形態に係る浮遊汚染物質回収システム１を示す模式図である。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram showing a suspended pollutant recovery system 1 according to an embodiment of the present invention.

浮遊汚染物質回収システム１は、船舶２に取り付けられる。浮遊汚染物質回収システム１は、船舶２が海、河川、湖、沼等の環境から取得した水（以下、環境水）から浮遊汚染物質を回収する機能を有する。本実施形態において船舶２が海、河川、湖、沼等の環境から取得する水は、例えばバラスト水である。また、浮遊汚染物質は、環境基準や排水基準でいう浮遊物質（２ｍｍのふるいを通過し１μmのろ過材上に残留する物質）、２ｍｍ以上のプラスチックや５ｍｍ以下又は１ｍｍ以下等を対象とするマイクロプラスチック等を含むものとする。 The airborne contaminant recovery system 1 is attached to the ship 2. The floating pollutant recovery system 1 has a function of recovering floating pollutants from water acquired from the environment such as the sea, rivers, lakes, and swamps (hereinafter referred to as environmental water) by the ship 2. In the present embodiment, the water acquired by the ship 2 from the environment such as the sea, rivers, lakes, and swamps is, for example, ballast water. Suspended solids are suspended solids (substances that pass through a 2 mm sieve and remain on a 1 μm filter medium), plastics of 2 mm or more, and micros of 5 mm or less or 1 mm or less, as defined by environmental standards and wastewater standards. It shall contain plastics, etc.

＜全体構成＞
浮遊汚染物質回収システム１の全体的な構成について説明する。なお、以下の説明において「ライン」とは、流路、経路、管路等の流体の流通が可能なラインの総称である。 <Overall configuration>
The overall configuration of the airborne contaminant recovery system 1 will be described. In the following description, the "line" is a general term for a line through which a fluid can flow, such as a flow path, a path, or a pipeline.

図１に示すように、浮遊汚染物質回収システム１は、取水ラインＬ１と、取水ポンプ１１と、ろ過装置１２と、処理水ラインＬ２と、処理水貯留タンク１３と、逆洗ラインＬ３と、処理水逆洗用開閉弁３１と、逆洗ポンプ３２と、逆洗排水ラインＬ４と、浮遊汚染物質回収装置４０と、制御装置１００と、を備える。 As shown in FIG. 1, the suspended pollutant recovery system 1 treats the intake line L1, the intake pump 11, the filtration device 12, the treated water line L2, the treated water storage tank 13, and the backwash line L3. A water backwash on-off valve 31, a backwash pump 32, a backwash drainage line L4, a suspended pollutant recovery device 40, and a control device 100 are provided.

取水ラインＬ１は、船舶２の外側にある環境水（例えば、海水、汽水、淡水）を船舶２の内側に取り入れるラインである。取水ラインＬ１の一側の端部（上流側の端部）に配置される取水口は、環境水を取得できる位置、例えば海面よりも下側に位置する。取水ラインＬ１の他側の端部（下流側の端部）は、ろ過装置１２に接続される。 The water intake line L1 is a line that takes in environmental water (for example, seawater, brackish water, fresh water) outside the ship 2 inside the ship 2. The intake port arranged at one end (upstream end) of the intake line L1 is located at a position where environmental water can be acquired, for example, below the sea level. The other end (downstream end) of the intake line L1 is connected to the filtration device 12.

取水ポンプ１１は、取水ラインＬ１に配置される。取水ポンプ１１が駆動することにより、環境水が取水ラインＬ１を通じて船舶２の外側から内側に取り入れられる。 The intake pump 11 is arranged at the intake line L1. By driving the intake pump 11, environmental water is taken in from the outside to the inside of the ship 2 through the intake line L1.

ろ過装置１２は、取水ラインＬ１を流通する環境水をろ過するフィルタ１２０と、当該フィルタ１２０を保持するろ過塔本体１２１と、を有する。環境水は、ろ過装置１２を通過することによりろ過処理された処理水となる。なお、ろ過装置１２には、種々の方式のものを採用することができる。例えば、ろ過装置１２は、ろ過処理とともに逆洗処理を並行して行ってフィルタ１２０の目詰まりを解消する方式のバラスト水処理装置であってもよい。 The filtration device 12 has a filter 120 for filtering the environmental water flowing through the intake line L1 and a filtration tower main body 121 for holding the filter 120. The environmental water becomes treated water that has been filtered by passing through the filtration device 12. As the filtration device 12, various types of filtration devices can be adopted. For example, the filtration device 12 may be a ballast water treatment device of a type that clears the clogging of the filter 120 by performing a backwashing treatment in parallel with the filtration treatment.

処理水ラインＬ２は、ろ過装置１２で処理された処理水が流通するラインである。処理水ラインＬ２の一側の端部（上流側の端部）はろ過装置１２に接続され、処理水ラインＬ２の他側の端部（下流側の端部）は処理水貯留タンク１３に接続される。 The treated water line L2 is a line through which the treated water treated by the filtration device 12 flows. One end (upstream end) of the treated water line L2 is connected to the filtration device 12, and the other end (downstream end) of the treated water line L2 is connected to the treated water storage tank 13. Will be done.

処理水貯留タンク１３は、ろ過装置１２でろ過処理された処理水を貯留する。この処理水貯留タンク１３には、ろ過装置１２のフィルタ１２０を逆洗処理するための逆洗ラインＬ３が接続されている。なお、図１では図示していないが、処理水貯留タンク１３には、船舶２の外側に処理水を排出する処理水排出ラインが接続されていてもよい。 The treated water storage tank 13 stores the treated water filtered by the filtration device 12. A backwash line L3 for backwashing the filter 120 of the filtration device 12 is connected to the treated water storage tank 13. Although not shown in FIG. 1, a treated water discharge line for discharging treated water may be connected to the treated water storage tank 13 outside the ship 2.

逆洗ラインＬ３は、ろ過装置１２のフィルタ１２０のろ過方向の逆方向に当該フィルタ１２０に処理水を供給するラインである。逆洗ラインＬ３の一側の端部（上流側の端部）は、処理水貯留タンク１３に接続される。逆洗ラインＬ３の他側の端部（下流側の端部）は、ろ過装置１２において、環境水をろ過するろ過方向の流れにおいてフィルタ１２０よりも下流側（処理水の出口側）に接続される。 The backwash line L3 is a line that supplies treated water to the filter 120 in the direction opposite to the filtration direction of the filter 120 of the filtration device 12. One end (upstream end) of the backwash line L3 is connected to the treated water storage tank 13. The other end (downstream end) of the backwash line L3 is connected to the downstream side (outlet side of the treated water) of the filter 120 in the flow in the filtration direction for filtering the environmental water in the filtration device 12. To.

処理水逆洗用開閉弁３１は、逆洗ラインＬ３に配置される。処理水逆洗用開閉弁３１は、フィルタ１２０の逆洗処理を行わない場合は閉状態である。フィルタ１２０の逆洗処理を行う場合は、処理水逆洗用開閉弁３１が閉状態から開状態に移行する。 The on-off valve 31 for backwashing the treated water is arranged on the backwash line L3. The on-off valve 31 for backwashing the treated water is in the closed state when the backwashing treatment of the filter 120 is not performed. When the backwashing process of the filter 120 is performed, the treated water backwashing on-off valve 31 shifts from the closed state to the open state.

逆洗ポンプ３２は、逆洗ラインＬ３に配置される。逆洗ポンプ３２が駆動することにより、ろ過方向と逆方向から当該フィルタ１２０に逆洗ラインＬ３を通じて処理水が供給される。 The backwash pump 32 is arranged on the backwash line L3. By driving the backwash pump 32, the treated water is supplied to the filter 120 from the direction opposite to the filtration direction through the backwash line L3.

逆洗排水ラインＬ４は、フィルタ１２０を逆洗した後の処理水である逆洗排水が流通するラインである。逆洗排水ラインＬ４の一側の端部（上流側の端部）は、ろ過装置１２において、環境水をろ過するろ過方向の流れにおいてフィルタ１２０よりも上流側（取水ラインＬ１側、環境水入口側）に接続される。この逆洗排水ラインＬ４を通じてろ過装置１２を逆洗した後の処理水が船舶２の外側に排出される。 The backwash drainage line L4 is a line through which the backwash drainage, which is the treated water after the filter 120 is backwashed, is distributed. One end (upstream end) of the backwash drainage line L4 is located upstream of the filter 120 (intake line L1 side, environmental water inlet) in the flow in the filtration direction for filtering the environmental water in the filtration device 12. Connected to the side). The treated water after backwashing the filtration device 12 through the backwash drainage line L4 is discharged to the outside of the ship 2.

サイクロン３５は、水の流れを利用した固液分離を行うことにより、逆洗排水ラインＬ４を流通する逆洗排水に含まれる固形物を分離する。ろ過装置１２から排出された逆洗排水は、サイクロン３５で分離された後に浮遊汚染物質回収装置４０に到達する。なお、サイクロン３５には、内部に溜まった排水を連続又は間欠的に排出される排出ライン（図示省略）が設けられる。 The cyclone 35 separates the solid matter contained in the backwash drainage flowing through the backwash drainage line L4 by performing solid-liquid separation using the flow of water. The backwash wastewater discharged from the filtration device 12 reaches the airborne contaminant recovery device 40 after being separated by the cyclone 35. The cyclone 35 is provided with a discharge line (not shown) for continuously or intermittently discharging the drainage accumulated inside.

浮遊汚染物質回収装置４０は、マイクロプラスチック等の浮遊汚染物質を回収するためのものであり、逆洗排水ラインＬ４におけるサイクロン３５の下流側に配置される。 The airborne contaminant recovery device 40 is for recovering airborne contaminants such as microplastics, and is arranged on the downstream side of the cyclone 35 in the backwash drainage line L4.

本実施形態の浮遊汚染物質回収装置４０は、浮遊汚染物質を捕捉するための回収フィルタ４１と、浮遊汚染物質を保管するための回収容器４２と、回収フィルタ４１を保持するフィルタハウジング４３と、回収フィルタ４１に清水を供給するための清水供給手段５０と、を備える。 The airborne contaminant recovery device 40 of the present embodiment includes a recovery filter 41 for capturing airborne contaminants, a recovery container 42 for storing airborne contaminants, a filter housing 43 for holding the recovery filter 41, and recovery. A fresh water supply means 50 for supplying fresh water to the filter 41 is provided.

回収フィルタ４１は、浮遊汚染物質を回収可能なろ過精度のものが使用される。例えば、回収フィルタ４１のろ過精度は２００μｍ～８００μｍであることが好ましい。 As the recovery filter 41, a filter having a filtration accuracy capable of recovering airborne contaminants is used. For example, the filtration accuracy of the recovery filter 41 is preferably 200 μm to 800 μm.

本実施形態では、ろ過精度３００μｍ～５００μｍの金属製のメッシュフィルタが回収フィルタ４１に用いられる。なお、当該構成に限定されるわけではなく、スプリングフィルタや他の方式のフィルタを回収フィルタ４１に用いることができる。例えば、ろ過装置１２のフィルタ１２０のろ過精度と回収フィルタ４１のろ過精度を同じにしてもよいし、海洋でのマイクロプラスチックサンプリングに使用されるニューストンネット(目開き０．３ｍｍ)にあわせて目開き０．３ｍｍの金属メッシュフィルタとしてもよい。なお、本実施形態において、ろ過精度は、表示孔径値の粒子の粒子除去効率が９９％以上捕集できることを示すものとする。 In the present embodiment, a metal mesh filter having a filtration accuracy of 300 μm to 500 μm is used for the recovery filter 41. The configuration is not limited to this, and a spring filter or another type of filter can be used for the recovery filter 41. For example, the filtration accuracy of the filter 120 of the filtration device 12 and the filtration accuracy of the recovery filter 41 may be the same, or the mesh may be adjusted to the Neuston net (opening 0.3 mm) used for microplastic sampling in the ocean. It may be a metal mesh filter having an opening of 0.3 mm. In this embodiment, the filtration accuracy indicates that the particle removal efficiency of the particles having the indicated pore size value can be collected by 99% or more.

フィルタハウジング４３は、回収フィルタ４１を着脱自在に保持する。着脱自在の構成としては、例えばカートリッジ形式等、適宜の方式を採用できる。 The filter housing 43 detachably holds the recovery filter 41. As a detachable configuration, an appropriate method such as a cartridge type can be adopted.

回収容器４２は、清水供給手段５０によって回収フィルタ４１に供給される清水による逆洗によって得られる浮遊汚染物質を含む液体を保管する容器である。回収容器４２における浮遊汚染物質を含む液体の回収方法の詳細については、後述する。 The recovery container 42 is a container for storing a liquid containing suspended contaminants obtained by backwashing with fresh water supplied to the recovery filter 41 by the fresh water supply means 50. Details of the method for recovering the liquid containing the airborne contaminants in the recovery container 42 will be described later.

清水供給手段５０は、回収フィルタ４１に清水を供給する装置である。本実施形態の清水供給手段５０は、清水タンク５１と、清水共通ラインＬ５と、清水ポンプ５２と、清水順洗ラインＬ６と、順洗用開閉弁５３と、清水逆洗ラインＬ７と、清水逆洗用開閉弁５４と、清水排水ラインＬ８と、を備える。 The fresh water supply means 50 is a device for supplying fresh water to the recovery filter 41. The fresh water supply means 50 of the present embodiment includes a fresh water tank 51, a fresh water common line L5, a fresh water pump 52, a fresh water forward washing line L6, a forward washing on-off valve 53, a fresh water back washing line L7, and a fresh water reverse. It is provided with a washing on-off valve 54 and a fresh water drainage line L8.

清水タンク５１は、所定量の清水を貯留できるタンクである。清水タンク５１に貯留される清水は、船舶２に取り入れられる海水や汽水に比べ、塩分濃度が充分低い水（真水）であることが好ましい。例えば、船舶２内の造水装置で製造された水であってもよい。 The fresh water tank 51 is a tank capable of storing a predetermined amount of fresh water. The fresh water stored in the fresh water tank 51 is preferably water (fresh water) having a sufficiently low salinity as compared with seawater or brackish water taken into the ship 2. For example, it may be water produced by the water making apparatus in the ship 2.

清水共通ラインＬ５は、清水タンク５１に貯留された清水を回収フィルタ４１に供給するためのラインである。清水共通ラインＬ５の一側の端部（上流側の端部）は清水タンク５１に接続され、清水共通ラインＬ５の他側の端部（下流側の端部）は清水順洗ラインＬ６と清水逆洗ラインＬ７に分岐している。 The fresh water common line L5 is a line for supplying the fresh water stored in the fresh water tank 51 to the recovery filter 41. One end (upstream end) of the Shimizu common line L5 is connected to the Shimizu tank 51, and the other end (downstream end) of the Shimizu common line L5 is the Shimizu forward wash line L6 and Shimizu. It branches to the backwash line L7.

清水ポンプ５２は、清水共通ラインＬ５に配置される。清水ポンプ５２が駆動することにより、清水が清水共通ラインＬ５から清水順洗ラインＬ６又は清水逆洗ラインＬ７を通じて回収フィルタ４１に送られる。 The fresh water pump 52 is arranged on the fresh water common line L5. By driving the fresh water pump 52, fresh water is sent from the fresh water common line L5 to the recovery filter 41 through the fresh water forward washing line L6 or the fresh water backwashing line L7.

清水順洗ラインＬ６は、ろ過装置１２の（逆洗排水）のろ過方向と同じ方向で回収フィルタ４１に清水を供給するラインである。清水順洗ラインＬ６の一側の端部（上流側の端部）は、清水共通ラインＬ５を介して清水タンク５１に接続される。清水順洗ラインＬ６の他側の端部（下流側の端部）は、浮遊汚染物質回収装置４０における回収フィルタ４１の上流側(ろ過装置１２側又はサイクロン３５側)に接続される。 The fresh water forward washing line L6 is a line for supplying fresh water to the recovery filter 41 in the same direction as the filtration direction of the (backwashing wastewater) of the filtering device 12. One end (upstream end) of the Shimizu normal washing line L6 is connected to the Shimizu tank 51 via the Shimizu common line L5. The other end (downstream end) of the fresh water forward washing line L6 is connected to the upstream side (filtration device 12 side or cyclone 35 side) of the recovery filter 41 in the suspended pollutant recovery device 40.

順洗用開閉弁５３は、清水順洗ラインＬ６に配置される。以下、清水順洗ラインＬ６を通じて回収フィルタ４１に清水を供給する処理を清水順洗処理とする。回収フィルタ４１の清水順洗処理を行わない場合は順洗用開閉弁５３が閉状態である。回収フィルタ４１に対して清水順洗処理を行う場合は、順洗用開閉弁５３が閉状態から開状態に移行する。 The on-off valve 53 for normal washing is arranged on the fresh water normal washing line L6. Hereinafter, the treatment of supplying fresh water to the recovery filter 41 through the fresh water normal washing line L6 is referred to as a fresh water normal washing treatment. When the fresh water forward washing treatment of the recovery filter 41 is not performed, the forward washing on-off valve 53 is in the closed state. When the recovery filter 41 is subjected to the normal washing process with fresh water, the on-off valve 53 for normal washing shifts from the closed state to the open state.

清水逆洗ラインＬ７は、ろ過装置１２の（逆洗排水）のろ過方向と逆方向で回収フィルタ４１に清水を供給するラインである。清水逆洗ラインＬ７の一側の端部（上流側の端部）は、清水共通ラインＬ５を介して清水タンク５１に接続される。清水逆洗ラインＬ７の他側の端部（下流側の端部）は、浮遊汚染物質回収装置４０における回収フィルタ４１の下流側(逆洗排水ラインＬ４の出口側)に接続される。 The fresh water backwash line L7 is a line that supplies fresh water to the recovery filter 41 in the direction opposite to the filtration direction of the (backwash drainage) of the filtration device 12. One end (upstream end) of the Shimizu backwash line L7 is connected to the Shimizu tank 51 via the Shimizu common line L5. The other end (downstream end) of the fresh water backwash line L7 is connected to the downstream side (outlet side of the backwash drainage line L4) of the recovery filter 41 in the airborne contaminant recovery device 40.

清水逆洗用開閉弁５４は、清水逆洗ラインＬ７に配置される。以下、清水逆洗ラインＬ７を通じて回収フィルタ４１に清水を供給する処理を清水逆洗処理とする。回収フィルタ４１の清水逆洗処理を行わない場合は清水逆洗用開閉弁５４が閉状態である。回収フィルタ４１に対して清水逆洗処理を行う場合は、清水逆洗用開閉弁５４が閉状態から開状態に移行する。 The fresh water backwash on-off valve 54 is arranged on the freshwater backwash line L7. Hereinafter, the process of supplying fresh water to the recovery filter 41 through the fresh water backwash line L7 is referred to as a freshwater backwash process. When the fresh water backwash treatment of the recovery filter 41 is not performed, the freshwater backwash on-off valve 54 is in the closed state. When the fresh water backwash treatment is performed on the recovery filter 41, the freshwater backwash on-off valve 54 shifts from the closed state to the open state.

清水排水ラインＬ８は、清水逆洗処理で回収フィルタ４１を逆洗した後の逆洗清水を回収容器４２に送るラインである。清水排水ラインＬ８の一側の端部（上流側の端部）は回収フィルタ４１の上流側(ろ過装置１２側又はサイクロン３５側)に接続され、他側の端部（下流側の端部）は回収容器４２に接続される。 The fresh water drainage line L8 is a line for sending the backwashed fresh water after backwashing the recovery filter 41 in the freshwater backwashing treatment to the recovery container 42. One end (upstream end) of the fresh water drainage line L8 is connected to the upstream side (filtration device 12 side or cyclone 35 side) of the recovery filter 41, and the other end (downstream end). Is connected to the collection container 42.

本実施形態の清水供給手段５０は、制御装置１００によって清水を供給するための処理が制御される。 In the fresh water supply means 50 of the present embodiment, the process for supplying fresh water is controlled by the control device 100.

制御装置１００は、ＣＰＵ、ＲＯＭ、ＲＡＭ及び記憶装置等からなるコンピュータである。制御装置１００は、ろ過装置１２、処理水逆洗用開閉弁３１、逆洗ポンプ３２、浮遊汚染物質回収装置４０、清水ポンプ５２、順洗用開閉弁５３及び清水逆洗用開閉弁５４に電気的に接続されており、各種制御を実行する。また、制御装置１００は、ろ過装置１２の制御と、それ以外（処理水逆洗用開閉弁３１、逆洗ポンプ３２、浮遊汚染物質回収装置４０、清水ポンプ５２、順洗用開閉弁５３及び清水逆洗用開閉弁５４等）の制御を連携する別々の制御装置としても良い。 The control device 100 is a computer including a CPU, a ROM, a RAM, a storage device, and the like. The control device 100 is electric to the filtration device 12, the on-off valve for backwashing treated water 31, the backwash pump 32, the floating pollutant recovery device 40, the fresh water pump 52, the on-off valve for forward washing 53, and the on-off valve for backwashing fresh water 54. It is connected to each other and executes various controls. Further, the control device 100 controls the filtration device 12 and other than that (treated water backwash on-off valve 31, backwash pump 32, airborne contaminant recovery device 40, fresh water pump 52, forward wash on-off valve 53 and fresh water. It may be a separate control device that cooperates with the control of the backwash on-off valve 54, etc.).

＜清水順洗処理による回収制御＞
次に、清水順洗ラインＬ６を通じて回収フィルタ４１に清水を供給する清水順洗処理によって浮遊汚染物質を回収する制御について説明する。図２は、本実施形態の浮遊汚染物質回収装置４０の清水順洗処理の一例を示すフローチャートである。 <Recovery control by normal washing with fresh water>
Next, the control of recovering the suspended contaminants by the fresh water normal washing process of supplying fresh water to the recovery filter 41 through the fresh water normal washing line L6 will be described. FIG. 2 is a flowchart showing an example of a fresh water sequential washing process of the airborne contaminant recovery device 40 of the present embodiment.

制御装置１００は、ユーザの操作又は予め設定されるスケジュール等により浮遊汚染物質を回収する指令を受信すると、逆洗排水制御を開始する（ステップＳ１）。この逆洗排水制御において、制御装置１００は、処理水逆洗用開閉弁３１が閉状態から開状態に移行するとともに、逆洗ポンプ３２を駆動する処理を実行する。 When the control device 100 receives a command for recovering suspended pollutants by a user's operation or a preset schedule or the like, the control device 100 starts backwash drainage control (step S1). In this backwash drainage control, the control device 100 shifts the treated water backwash on-off valve 31 from the closed state to the open state, and executes a process of driving the backwash pump 32.

ステップＳ１の処理が実行されることにより、ろ過装置１２のフィルタ１２０が処理水によって逆洗される。フィルタ１２０を逆洗した後の逆洗排水は、逆洗排水ラインＬ４に配置されるサイクロン３５を通過した後、回収フィルタ４１を通過して船舶２の外側に排出される。回収フィルタ４１では、逆洗排水に含まれる浮遊汚染物質が捕捉される。本実施形態では、フィルタ１２０の逆洗排水の全量が、浮遊汚染物質回収装置４０の回収フィルタ４１を通過することになる。 By executing the treatment in step S1, the filter 120 of the filtration device 12 is backwashed with the treated water. The backwash drainage after backwashing the filter 120 passes through the cyclone 35 arranged in the backwash drainage line L4, then passes through the recovery filter 41, and is discharged to the outside of the ship 2. The recovery filter 41 captures airborne pollutants contained in the backwash wastewater. In the present embodiment, the entire amount of the backwash drainage of the filter 120 passes through the recovery filter 41 of the suspended pollutant recovery device 40.

ステップＳ１の処理の後、制御装置１００は清水順洗制御を開始する（ステップＳ２）。この清水順洗制御において、制御装置１００は、順洗用開閉弁５３を開状態に制御するとともに清水逆洗用開閉弁５４の閉状態を維持する。そして、清水ポンプ５２を駆動して回収フィルタ４１に順方向（逆洗排水のろ過方向と同じ方向）で清水を供給する。回収フィルタ４１を順方向で通過した清水は、そのまま逆洗排水ラインＬ４を通じて船舶２の外側に排出されることになる。 After the process of step S1, the control device 100 starts the fresh water sequential washing control (step S2). In this fresh water forward washing control, the control device 100 controls the forward washing on-off valve 53 to be in the open state and keeps the fresh water backwash on-off valve 54 in the closed state. Then, the fresh water pump 52 is driven to supply fresh water to the recovery filter 41 in the forward direction (the same direction as the filtration direction of the backwash drainage). The fresh water that has passed through the recovery filter 41 in the forward direction is discharged to the outside of the ship 2 as it is through the backwash drainage line L4.

ステップＳ２の処理が実行されることにより、回収フィルタ４１及びろ過物は清水によって塩分を除去され、塩分を含む順洗後の水は船舶２の外に排出される。 By executing the treatment of step S2, the recovery filter 41 and the filtered material are demineralized with fresh water, and the water after the normal washing containing the salt content is discharged to the outside of the vessel 2.

ステップＳ２の処理の後、制御装置１００は清水順洗制御が終了したか否かを所定の条件に基づいて判定する（ステップＳ３）。洗浄に充分な清水が回収フィルタ４１に供給された場合、処理はステップＳ４に移行する。洗浄に充分な清水が回収フィルタ４１に供給されていない場合は清水供給制御を継続する。所定の条件はタイマによって定められた所定時間でもよいし、回収フィルタ４１の下流側に水質センサ（電気伝導率センサ等）を配置し、当該水質センサの検出値に基づいて処理が完了したか否かを判定してもよい。 After the process of step S2, the control device 100 determines whether or not the fresh water forward washing control is completed based on a predetermined condition (step S3). When sufficient fresh water for cleaning is supplied to the recovery filter 41, the treatment proceeds to step S4. If sufficient fresh water for cleaning is not supplied to the recovery filter 41, the fresh water supply control is continued. The predetermined condition may be a predetermined time determined by the timer, or a water quality sensor (electrical conductivity sensor, etc.) is arranged on the downstream side of the recovery filter 41, and whether or not the processing is completed based on the detection value of the water quality sensor. May be determined.

処理がステップＳ４に移行すると、制御装置１００は、浮遊汚染物質回収装置４０から回収フィルタ４１を取り外すために清水の供給を停止する制御を行う。本実施形態では、順洗用開閉弁５３を開状態から閉状態に移行させるとともに、清水ポンプ５２の駆動を停止する。これによって塩分が除去された回収フィルタ４１を浮遊汚染物質回収装置４０から回収できる状態となる。ユーザは、フィルタハウジング４３から浮遊汚染物質を捕捉した回収フィルタ４１を取り出すことで、焼却処理等、適宜の方法で浮遊汚染物質の廃棄処理を行う。 When the process shifts to step S4, the control device 100 controls to stop the supply of fresh water in order to remove the recovery filter 41 from the airborne contaminant recovery device 40. In the present embodiment, the forward washing on-off valve 53 is changed from the open state to the closed state, and the drive of the fresh water pump 52 is stopped. As a result, the recovery filter 41 from which the salt content has been removed can be recovered from the airborne contaminant recovery device 40. The user takes out the recovery filter 41 that has captured the airborne contaminants from the filter housing 43, and disposes of the airborne contaminants by an appropriate method such as incineration.

＜清水逆洗処理による回収制御＞
次に、清水逆洗ラインＬ７を通じて回収フィルタ４１に清水を供給する清水逆洗処理によって浮遊汚染物質を回収する制御について説明する。図３は、本実施形態の浮遊汚染物質回収装置４０の清水逆洗処理の一例を示すフローチャートである。 <Recovery control by backwashing with fresh water>
Next, the control of recovering the suspended contaminants by the fresh water backwash treatment of supplying fresh water to the recovery filter 41 through the freshwater backwash line L7 will be described. FIG. 3 is a flowchart showing an example of the fresh water backwashing treatment of the airborne contaminant recovery device 40 of the present embodiment.

制御装置１００は、ユーザの操作又は予め設定されるスケジュール等により浮遊汚染物質を回収する指令を受信すると、逆洗排水制御を開始する（ステップＳ２１）。このステップＳ２１の逆洗排水制御は、図２のフロー中におけるステップＳ１と同様の処理である。 When the control device 100 receives a command for recovering suspended pollutants by the user's operation or a preset schedule or the like, the control device 100 starts the backwash drainage control (step S21). The backwash drainage control in step S21 is the same process as step S1 in the flow of FIG.

ステップＳ２１の処理の後、制御装置１００は清水順洗制御を開始する（ステップＳ２）。この清水順洗制御において、制御装置１００は、順洗用開閉弁５３を開状態に制御するとともに清水逆洗用開閉弁５４の閉状態を維持する。そして、清水ポンプ５２を駆動して回収フィルタ４１に順方向（逆洗排水のろ過方向と同じ方向）で清水を供給する。回収フィルタ４１を順方向で通過した清水は、そのまま逆洗排水ラインＬ４を通じて船舶２の外側に排出されることになる。ステップＳ２２の処理が実行されることにより、回収フィルタ４１及びろ過物は清水によって塩分を除去され、塩分を含む順洗後の水は船舶２の外に排出される。 After the process of step S21, the control device 100 starts the fresh water sequential washing control (step S2). In this fresh water forward washing control, the control device 100 controls the forward washing on-off valve 53 to be in the open state and keeps the fresh water backwash on-off valve 54 in the closed state. Then, the fresh water pump 52 is driven to supply fresh water to the recovery filter 41 in the forward direction (the same direction as the filtration direction of the backwash drainage). The fresh water that has passed through the recovery filter 41 in the forward direction is discharged to the outside of the ship 2 as it is through the backwash drainage line L4. By executing the process of step S22, the recovery filter 41 and the filtered material are demineralized with fresh water, and the salt-containing water after the normal washing is discharged to the outside of the vessel 2.

ステップＳ２２の処理の後、制御装置１００は清水逆洗制御を開始する（ステップＳ２３）。この清水逆洗制御において、制御装置１００は、清水逆洗用開閉弁５４を開状態に制御するとともに順洗用開閉弁５３の閉状態を維持する。また、回収フィルタ４１を逆方向に通過した清水が回収容器４２に回収されるように、浮遊汚染物質回収装置４０内の経路を切り替える処理を実行する。そして、清水ポンプ５２を駆動して回収フィルタ４１に逆方向（逆洗排水のろ過方向の逆方向）で清水を供給する。回収フィルタ４１を逆方向に通過した清水は、回収容器４２に回収される。 After the process of step S22, the control device 100 starts the fresh water backwash control (step S23). In this fresh water backwash control, the control device 100 controls the freshwater backwash on-off valve 54 to be in the open state and keeps the forward-washing on-off valve 53 in the closed state. Further, a process of switching the route in the suspended pollutant recovery device 40 is executed so that the fresh water that has passed through the recovery filter 41 in the reverse direction is recovered in the recovery container 42. Then, the fresh water pump 52 is driven to supply fresh water to the recovery filter 41 in the opposite direction (the direction opposite to the filtration direction of the backwash drainage). The fresh water that has passed through the recovery filter 41 in the opposite direction is recovered in the recovery container 42.

ステップＳ２３の処理が実行されることにより、ステップＳ２１の逆洗排水制御で回収フィルタ４１に捕捉された浮遊汚染物質が清水によって逆方向に押し流され、清水排水ラインＬ８を通じて清水とともに回収容器４２に回収される。 By executing the treatment in step S23, the suspended pollutants trapped in the recovery filter 41 in the backwash drainage control in step S21 are washed away by the fresh water in the reverse direction and collected in the recovery container 42 together with the fresh water through the fresh water drainage line L8. Will be done.

ステップＳ２３の処理の後、制御装置１００は清水逆洗制御が終了したか否かを所定の条件に基づいて判定する（ステップＳ２４）。回収フィルタ４１から浮遊汚染物質を回収するために充分な清水が回収フィルタ４１に供給された場合、処理はステップＳ２４に移行する。浮遊汚染物質の回収のために充分な清水が回収フィルタ４１に供給されていない場合は清水逆洗制御を継続する。 After the process of step S23, the control device 100 determines whether or not the fresh water backwash control is completed based on a predetermined condition (step S24). When sufficient fresh water has been supplied to the recovery filter 41 to recover the airborne contaminants from the recovery filter 41, the process proceeds to step S24. If sufficient fresh water is not supplied to the recovery filter 41 for recovery of airborne contaminants, the fresh water backwash control is continued.

本実施形態では、ステップＳ２１の逆洗排水制御で回収フィルタ４１を順方向で通過した通水量に対し、清水逆洗制御で回収フィルタ４１を逆方向で通過した通水量が３００分の１以下となるように、所定の条件が設定される。なお、所定の条件はタイマによって定められた所定時間でもよいし、回収フィルタ４１と回収容器４２の間に水質センサを配置し、当該水質センサ（濁度センサ等）の検出値に基づいて処理が完了したか否かを判定してもよい。また、回収容器４２は、１回の清水逆洗制御で回収フィルタ４１に供給される清水の全量を回収できるように構成しておくことで、回収フィルタ４１から浮遊汚染物質を確実に除去し、回収容器４２に回収することができる。 In the present embodiment, the amount of water passing through the recovery filter 41 in the reverse direction in the fresh water backwash control is 1/300 or less of the amount of water passing through the recovery filter 41 in the backwash drainage control in step S21. Predetermined conditions are set so as to be. The predetermined condition may be a predetermined time determined by the timer, or a water quality sensor is arranged between the recovery filter 41 and the recovery container 42, and processing is performed based on the detection value of the water quality sensor (turbidity sensor, etc.). It may be determined whether or not it is completed. Further, the recovery container 42 is configured so that the entire amount of fresh water supplied to the recovery filter 41 can be recovered by one fresh water backwash control, so that airborne contaminants can be reliably removed from the recovery filter 41. It can be collected in the collection container 42.

処理がステップＳ２５に移行すると、制御装置１００は、回収容器４２に回収した清水を処理するために、清水の供給を停止する制御を行う。本実施形態では、清水逆洗用開閉弁５４を開状態から閉状態に移行させるとともに、清水ポンプ５２の駆動を停止する。ステップ逆洗排水制御で回収フィルタ４１を順方向に通過する通水量よりも、清水逆洗制御で回収フィルタ４１を逆方向に通過する通水量を小さくすることで、浮遊汚染物質を濃縮処理することができる。例えば、回収容器４２に回収した浮遊汚染物質含有水を焼却する処理（蒸発処理）を行う。浮遊汚染物質含有水は逆洗排水制御で排水される逆洗排水量に比べ量が少ないので、処理量を抑制した効率的な浮遊汚染物質の廃棄処理が実現される。 When the treatment shifts to step S25, the control device 100 controls to stop the supply of fresh water in order to treat the fresh water collected in the recovery container 42. In the present embodiment, the fresh water backwash on-off valve 54 is shifted from the open state to the closed state, and the drive of the fresh water pump 52 is stopped. By making the amount of water passing through the recovery filter 41 in the reverse direction smaller than the amount of water passing through the recovery filter 41 in the step backwash control, the airborne contaminants are concentrated. Can be done. For example, a process (evaporation process) of incinerating the suspended pollutant-containing water collected in the collection container 42 is performed. Since the amount of airborne pollutant-containing water is smaller than the amount of backwash wastewater discharged by backwash drainage control, efficient disposal of airborne pollutants with a reduced amount of treatment is realized.

以上説明したように、浮遊汚染物質回収装置４０は、以下のように構成される。即ち、浮遊汚染物質回収装置４０は、環境水をろ過するろ過装置１２のフィルタ１２０を逆洗した後の逆洗排水が流通する逆洗排水ラインＬ４に配置される回収フィルタ４１と、回収フィルタ４１に清水を供給する清水供給手段５０と、を備える。 As described above, the airborne contaminant recovery device 40 is configured as follows. That is, the airborne contaminant recovery device 40 includes a recovery filter 41 arranged in the backwash drainage line L4 through which the backwash drainage after backwashing the filter 120 of the filtration device 12 for filtering environmental water flows, and the recovery filter 41. The fresh water supply means 50 for supplying fresh water to the water is provided.

また、浮遊汚染物質回収システム１は、環境水を船舶２に取り入れる取水ラインＬ１と、取水ラインＬ１に配置される取水ポンプ１１と、取水ラインＬ１の下流側に配置され、該取水ラインＬ１を流通する環境水をろ過するフィルタ１２０を有するろ過装置１２と、ろ過装置１２においてろ過された処理水を貯留する処理水貯留タンク１３と、ろ過装置１２と処理水貯留タンク１３とを接続する処理水ラインＬ２と、ろ過装置１２にフィルタ１２０のろ過方向と逆方向から処理水を供給する逆洗ラインＬ３と、上流側がろ過装置１２におけるフィルタ１２０よりも上流側に接続され、逆洗ラインＬ３からろ過装置１２に供給された逆洗後の処理水である逆洗排水を排出する逆洗排水ラインＬ４と、逆洗排水ラインＬ４に配置される回収フィルタ４１及び回収フィルタ４１に清水を供給する清水供給手段５０を有する浮遊汚染物質回収装置４０と、を備える。 Further, the airborne contaminant recovery system 1 is arranged on the downstream side of the intake line L1 for taking environmental water into the ship 2, the intake pump 11 arranged on the intake line L1, and the intake line L1 and flows through the intake line L1. A filtration device 12 having a filter 120 for filtering environmental water, a treated water storage tank 13 for storing the treated water filtered by the filtration device 12, and a treated water line connecting the filtration device 12 and the treated water storage tank 13. L2, a backwash line L3 that supplies treated water to the filtration device 12 from the direction opposite to the filtration direction of the filter 120, and an upstream side connected to the upstream side of the filter 120 in the filtration device 12, and the filtration device from the backwash line L3. Fresh water supply means for supplying fresh water to the backwash drainage line L4 that discharges the backwash drainage that is the treated water after the backwash supplied to 12, and the recovery filter 41 and the recovery filter 41 arranged in the backwash drainage line L4. The airborne contaminant recovery device 40 having 50 is provided.

本実施形態の浮遊汚染物質回収装置４０又は浮遊汚染物質回収システム１により、ろ過装置１２の逆洗水から浮遊汚染物質を効率的に回収でき、浮遊汚染物質を含む逆洗排水が船舶２の外側に排出される事態の発生を効果的に防止できる。 By the airborne contaminant recovery device 40 or the airborne contaminant recovery system 1 of the present embodiment, the airborne contaminants can be efficiently recovered from the backwash water of the filtration device 12, and the backwash drainage containing the airborne contaminants is outside the ship 2. It is possible to effectively prevent the occurrence of a situation in which the water is discharged.

また、本実施形態の清水供給手段５０は、回収フィルタ４１の上流側に接続され、回収フィルタ４１の上流側から該回収フィルタ４１に清水を供給する清水順洗ラインＬ６を有する。 Further, the fresh water supply means 50 of the present embodiment is connected to the upstream side of the recovery filter 41 and has a fresh water forward washing line L6 that supplies fresh water to the recovery filter 41 from the upstream side of the recovery filter 41.

これにより、回収フィルタ４１に対して順方向で清水を通過させることにより、回収フィルタ４１から塩分を除去できるので、焼却処理時のダイオキシンの発生及び塩分による焼却炉の劣化を抑制することができる。更に、ダイオキシンの発生を防止することにより、船舶２の航行中での焼却処理も可能となる。 As a result, salt can be removed from the recovery filter 41 by allowing fresh water to pass through the recovery filter 41 in the forward direction, so that generation of dioxins during the incineration process and deterioration of the incinerator due to the salt can be suppressed. Further, by preventing the generation of dioxins, it is possible to incinerate the ship 2 during navigation.

また、本実施形態の清水供給手段５０は、回収フィルタ４１の下流側に接続され、回収フィルタ４１の下流側から該回収フィルタ４１に清水を供給する清水逆洗ラインＬ７と、清水逆洗ラインＬ７から供給されて回収フィルタ４１を逆洗した後の逆洗清水を排出する清水排水ラインＬ８と、清水排水ラインＬ８を流通する逆洗清水を回収する回収容器４２と、を有する。 Further, the fresh water supply means 50 of the present embodiment is connected to the downstream side of the recovery filter 41, and the fresh water backwash line L7 and the freshwater backwash line L7 that supply fresh water to the recovery filter 41 from the downstream side of the recovery filter 41. It has a fresh water drainage line L8 for discharging the backwash fresh water supplied from the center and backwashing the recovery filter 41, and a recovery container 42 for collecting the backwash fresh water flowing through the freshwater drainage line L8.

これにより、逆洗排水制御における回収フィルタ４１の順方向の通水量に対して清水逆洗制御にける回収フィルタ４１の逆方向の通水量を低くすることにより、浮遊汚染物質を含む浮遊汚染物質含有水を濃縮することができる。また、回収容器４２で浮遊汚染物質含有水を保管して試料として管理することもできるし、回収容器４２に貯留された浮遊汚染物質含有水を蒸発させる処理を行って浮遊汚染物質を処理することもできる。また、回収容器４２に濃縮後の浮遊汚染物質含有水を貯留しておくことができるので、清水逆洗制御後にすぐに逆洗排水制御を開始することもできる。これによって浮遊汚染物質の回収効率をより一層向上させることができる。 As a result, the amount of water flow in the reverse direction of the recovery filter 41 in the fresh water backwash control is reduced with respect to the amount of water flow in the forward direction of the recovery filter 41 in the backwash drainage control. Water can be concentrated. Further, the floating pollutant-containing water can be stored in the recovery container 42 and managed as a sample, or the floating pollutant-containing water stored in the recovery container 42 can be evaporated to treat the floating pollutants. You can also. Further, since the concentrated floating pollutant-containing water can be stored in the recovery container 42, the backwash drainage control can be started immediately after the freshwater backwash control. This makes it possible to further improve the recovery efficiency of airborne contaminants.

また、本実施形態の浮遊汚染物質回収装置４０は、逆洗排水ラインＬ４における回収フィルタ４１よりも上流側に配置され、該逆洗排水ラインＬ４を流通する逆洗排水に含まれる固形物を分離するセパレータとしてのサイクロン３５を更に備える。 Further, the airborne contaminant recovery device 40 of the present embodiment is arranged on the upstream side of the recovery filter 41 in the backwash drainage line L4, and separates the solid matter contained in the backwash drainage flowing through the backwash drainage line L4. A cyclone 35 as a separator is further provided.

これにより、サイクロン３５である程度の固形物を除去することができ、回収フィルタ４１の負荷が軽減され効率的に浮遊汚染物質を捕捉することができる。逆洗排水に砂等比重が大きく粒径の大きい物質が多く存在する場合であっても、サイクロン３５の後段に位置する回収フィルタ４１の負荷を抑制することができる。 As a result, the cyclone 35 can remove a certain amount of solid substances, the load on the recovery filter 41 is reduced, and airborne contaminants can be efficiently captured. Even when a large amount of substances having a large specific gravity such as sand and a large particle size are present in the backwash drainage, the load on the recovery filter 41 located at the subsequent stage of the cyclone 35 can be suppressed.

本実施形態の回収フィルタ４１のろ過精度は、２００μｍ～８００μｍである。 The filtration accuracy of the recovery filter 41 of the present embodiment is 200 μm to 800 μm.

これにより、自然由来の生物や有機物等によるフィルタ目詰まりを抑制しつつ、浮遊汚染物質を確実に回収することができる。 This makes it possible to reliably recover airborne contaminants while suppressing filter clogging due to naturally occurring organisms, organic substances, and the like.

以上、本発明の実施形態について説明したが、本発明は、上述の実施形態に制限されるものではなく、適宜変更が可能である。 Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments and can be appropriately modified.

上記実施形態の図３のフローチャートでは、清水順洗制御を行った後に清水逆洗制御を行う方式を説明したが、場合によっては清水順洗制御を省略してもよい。このように、制御の方式も適宜変更できる。 In the flowchart of FIG. 3 of the above embodiment, the method of performing the fresh water backwash control after performing the freshwater forward wash control has been described, but the freshwater forward wash control may be omitted in some cases. In this way, the control method can be changed as appropriate.

また、上記実施形態において、サイクロン３５が浮遊汚染物質回収装置４０の上流側に配置される構成を説明したが、サイクロン式ではないセパレータを用いることもできる。また、場合によってはサイクロン３５を省略することも可能である。このように、上記実施形態が備える各構成も適宜変更できる。以下、上記実施形態の変形例について説明する。 Further, in the above embodiment, the configuration in which the cyclone 35 is arranged on the upstream side of the airborne contaminant recovery device 40 has been described, but a separator that is not a cyclone type can also be used. In some cases, the cyclone 35 can be omitted. As described above, each configuration provided in the above embodiment can be appropriately changed. Hereinafter, a modified example of the above embodiment will be described.

図４は、第１変形例の浮遊汚染物質回収システム１を示す模式図である。図５は、第２変形例の浮遊汚染物質回収システム１を示す模式図である。上記実施形態では、清水供給手段５０が清水順洗制御及び清水逆洗制御の両方を実行する構成を説明したが、この構成に限定されるわけではない。図４に示すように、上記実施形態の清水供給手段５０から清水逆洗ラインＬ７と、清水逆洗用開閉弁５４と、清水排水ラインＬ８と、回収容器４２と、を省略し、清水順洗制御のみを行う構成としてもよい。この場合、清水順洗後に回収フィルタ４１を取り外し、フィルタ１２０ごと浮遊汚染物質を回収する。同様に、図５に示すように、上記実施形態の清水供給手段５０から清水順洗ラインＬ６と、順洗用開閉弁５３と、を省略し、清水逆洗制御のみを行う構成としてもよい。 FIG. 4 is a schematic diagram showing the airborne contaminant recovery system 1 of the first modification. FIG. 5 is a schematic diagram showing the airborne contaminant recovery system 1 of the second modification. In the above embodiment, the configuration in which the fresh water supply means 50 executes both the fresh water forward washing control and the fresh water back washing control has been described, but the present invention is not limited to this configuration. As shown in FIG. 4, the fresh water backwash line L7, the freshwater backwash on-off valve 54, the freshwater drainage line L8, and the recovery container 42 are omitted from the freshwater supply means 50 of the above embodiment, and the freshwater forward wash is performed. It may be configured to perform only control. In this case, the recovery filter 41 is removed after the normal washing with fresh water, and the airborne contaminants are recovered together with the filter 120. Similarly, as shown in FIG. 5, the fresh water supply means 50 of the above-described embodiment may omit the fresh water forward washing line L6 and the normal washing on-off valve 53, and may be configured to perform only fresh water backwash control.

１ 浮遊汚染物質回収システム
２ 船舶
１１ 取水ポンプ
１２ ろ過装置
１３ 処理水貯留タンク
４０ 浮遊汚染物質回収装置
４１ 回収フィルタ
５０ 清水供給手段
１２０ フィルタ
Ｌ１ 取水ライン
Ｌ２ 処理水ライン
Ｌ３ 逆洗ライン
Ｌ４ 逆洗排水ライン

1 Floating pollutant recovery system 2 Ship 11 Intake pump 12 Filtration device 13 Treated water storage tank 40 Floating pollutant recovery device 41 Recovery filter 50 Fresh water supply means 120 Filter L1 Intake line L2 Treated water line L3 Backwash line L4 Backwash drainage line

Claims (6)

船舶に取り付けられ、当該船舶に取り入れられる環境水に含まれる浮遊汚染物質を回収する浮遊汚染物質回収装置であって、
環境水をろ過するろ過装置のフィルタを逆洗した後の逆洗排水が流通する逆洗排水ラインに配置される回収フィルタと、
前記回収フィルタに清水を供給する清水供給手段と、
を備える浮遊汚染物質回収装置。 A floating pollutant recovery device that is attached to a ship and collects suspended pollutants contained in the environmental water taken into the ship.
A recovery filter placed in the backwash drainage line where backwash drainage flows after backwashing the filter of the filtration device that filters environmental water,
A fresh water supply means for supplying fresh water to the recovery filter,
A floating pollutant recovery device equipped with. 前記清水供給手段は、前記回収フィルタの上流側に接続され、前記回収フィルタの上流側から該回収フィルタに清水を供給する清水順洗ラインを有する請求項１に記載の浮遊汚染物質回収装置。 The suspended pollutant recovery device according to claim 1, wherein the fresh water supply means is connected to the upstream side of the recovery filter and has a fresh water sequential washing line for supplying fresh water to the recovery filter from the upstream side of the recovery filter. 前記清水供給手段は、
前記回収フィルタの下流側に接続され、前記回収フィルタの下流側から該回収フィルタに清水を供給する清水逆洗ラインと、
前記清水逆洗ラインから供給されて前記回収フィルタを逆洗した後の逆洗清水を排出する清水排水ラインと、
前記清水排水ラインを流通する逆洗清水を回収する回収容器と、
を有する請求項１に記載の浮遊汚染物質回収装置。 The fresh water supply means
A fresh water backwash line connected to the downstream side of the recovery filter and supplying fresh water to the recovery filter from the downstream side of the recovery filter.
A fresh water drainage line that is supplied from the fresh water backwash line and discharges the backwash fresh water after backwashing the recovery filter.
A collection container for collecting backwashed fresh water flowing through the fresh water drainage line,
The airborne pollutant recovery device according to claim 1. 前記逆洗排水ラインにおける前記回収フィルタよりも上流側に配置され、該逆洗排水ラインを流通する逆洗排水に含まれる固形物を分離するセパレータを更に備える請求項１～３のいずれかに記載の浮遊汚染物質回収装置。 The invention according to any one of claims 1 to 3, further comprising a separator which is arranged on the upstream side of the recovery filter in the backwash drainage line and separates solid matter contained in the backwash drainage flowing through the backwash drainage line. Airborne pollutant recovery device. 前記回収フィルタのろ過精度は、２００μｍ～８００μｍである請求項１～４のいずれかに記載の浮遊汚染物質回収装置。 The airborne contaminant recovery device according to any one of claims 1 to 4, wherein the filtration accuracy of the recovery filter is 200 μm to 800 μm. 船舶に取り付けられ、当該船舶に取り入れられる環境水に含まれる浮遊汚染物質を回収する浮遊汚染物質回収システムであって、
環境水を前記船舶に取り入れる取水ラインと、
前記取水ラインに配置される取水ポンプと、
前記取水ラインの下流側に配置され、該取水ラインを流通する環境水をろ過するフィルタを有するろ過装置と、
前記ろ過装置においてろ過された処理水を貯留する処理水貯留タンクと、
前記ろ過装置と前記処理水貯留タンクとを接続する処理水ラインと、
前記ろ過装置に前記フィルタのろ過方向と逆方向から処理水を供給する逆洗ラインと、
上流側が前記ろ過装置における前記フィルタよりも上流側に接続され、前記逆洗ラインから前記ろ過装置に供給された逆洗後の処理水である逆洗排水を排出する逆洗排水ラインと、
前記逆洗排水ラインに配置される回収フィルタ及び前記回収フィルタに清水を供給する清水供給手段を有する浮遊汚染物質回収装置と、
を備える浮遊汚染物質回収システム。 A floating pollutant recovery system that is attached to a ship and collects floating pollutants contained in the environmental water taken into the ship.
An intake line that takes in environmental water into the ship,
The intake pump arranged in the intake line and
A filtration device arranged on the downstream side of the intake line and having a filter for filtering the environmental water flowing through the intake line.
A treated water storage tank for storing the treated water filtered by the filtration device, and a treated water storage tank.
A treated water line connecting the filtration device and the treated water storage tank,
A backwash line that supplies treated water to the filtration device from the direction opposite to the filtration direction of the filter,
A backwash drainage line in which the upstream side is connected to the upstream side of the filter in the filtration device and discharges the backwash drainage which is the treated water after the backwash supplied from the backwash line to the filtration device.
A recovery filter arranged in the backwash drainage line, a suspended pollutant recovery device having a fresh water supply means for supplying fresh water to the recovery filter, and a floating pollutant recovery device.
Floating pollutant recovery system with.
JP2020176498A 2020-10-21 2020-10-21 Floating contaminant recovery device and floating contaminant recovery system Pending JP2022067738A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2020176498A JP2022067738A (en) 2020-10-21 2020-10-21 Floating contaminant recovery device and floating contaminant recovery system
KR1020237005894A KR20230093240A (en) 2020-10-21 2021-10-15 Airborne pollutant recovery device and airborne pollutant recovery system
CN202180051928.0A CN116096629A (en) 2020-10-21 2021-10-15 Floating pollutant recovery device and floating pollutant recovery system
PCT/JP2021/038202 WO2022085582A1 (en) 2020-10-21 2021-10-15 Floating pollutant collection device and floating pollutant collection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2020176498A JP2022067738A (en) 2020-10-21 2020-10-21 Floating contaminant recovery device and floating contaminant recovery system

Publications (1)

Publication Number Publication Date
JP2022067738A true JP2022067738A (en) 2022-05-09

Family

ID=81290421

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2020176498A Pending JP2022067738A (en) 2020-10-21 2020-10-21 Floating contaminant recovery device and floating contaminant recovery system

Country Status (4)

Country Link
JP (1) JP2022067738A (en)
KR (1) KR20230093240A (en)
CN (1) CN116096629A (en)
WO (1) WO2022085582A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024058203A1 (en) * 2022-09-16 2024-03-21 三浦工業株式会社 Microplastic recovery system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4845855B2 (en) 2007-11-02 2011-12-28 財団法人シップ・アンド・オーシャン財団 Ship ballast water sampling system
JP2014094338A (en) * 2012-11-08 2014-05-22 Miura Co Ltd Ballast water treatment apparatus
JP6364712B2 (en) 2013-07-05 2018-08-01 株式会社サタケ Microbial concentrator
JP6459608B2 (en) * 2015-02-20 2019-01-30 三浦工業株式会社 Ballast water treatment equipment
KR101780952B1 (en) * 2017-03-16 2017-09-26 삼건세기(주) ballast water filtration apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024058203A1 (en) * 2022-09-16 2024-03-21 三浦工業株式会社 Microplastic recovery system

Also Published As

Publication number Publication date
KR20230093240A (en) 2023-06-27
WO2022085582A1 (en) 2022-04-28
CN116096629A (en) 2023-05-09

Similar Documents

Publication Publication Date Title
JP5357731B2 (en) Wastewater treatment ship
EP2700441A1 (en) Reduced backwash volume process
KR102439657B1 (en) A scrubber drainage purifying device and method, and a salinity difference power generation system
JP2944939B2 (en) Desulfurization wastewater treatment method and apparatus
JP2005313143A (en) Method and apparatus for manufacturing marine ballast water
JP4960612B2 (en) Membrane treatment equipment
WO2014103854A1 (en) Ballast water treatment device and back-washing method for ballast water treatment device
JP5715462B2 (en) Oil / water separator
WO2022085582A1 (en) Floating pollutant collection device and floating pollutant collection system
JP2006239530A (en) Manufacturing method and manufacturing apparatus of ballast water for ship
DK201700132U3 (en) Combination of an internal combustion engine and a purification system for the treatment of impurities contained in exhaust gases from the internal combustion engine of the ship
JP2004050145A (en) Apparatus for separating oil/water for bilge containing fine suspended solid
JP5904123B2 (en) Method and apparatus for cleaning and separating mixed materials
JP5985914B2 (en) Control device for chemical solution circulation in membrane treatment equipment
JP2007237939A (en) Wastewater treatment vessel
JP2001252536A (en) Method for cleaning filter membrane and apparatus for filtering seawater using the same
JP2006000728A (en) Method for preparing ballast water and apparatus for preparing ballast water to be loaded onto vessel
JP5060905B2 (en) Parts cleaning device
JP2024042846A (en) Microplastic recovery device
JP2022108255A (en) Microplastic recovery system
AU2006322659B2 (en) Reduced backwash volume process
JPH1142402A (en) Filter
JPWO2008114793A1 (en) Ballast water treatment method and apparatus
JP2007152274A (en) Cleaning method of membrane module in dipping membrane filtering device, and dipping membrane filtering device
JP2005046740A (en) Method and device for washing membrane separation apparatus

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20210330

A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A711

Effective date: 20210330

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20210330

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20230907