PROBLEM TO BE SOLVED: To provide a ballast water treatment device where the reverse washing performance of a filter is secured, and a treatment flow rate is largely secured.SOLUTION: There is provided a ballast water treatment device, comprising: a reverse-water washing spray nozzle 6 of spraying reverse wash water W2 to the outer circumferential face of a filter 52; a suction nozzle 4 opening toward the inner circumferential face of the filter 52 and sucking reverse wash drainage W11 as reverse wash water sprayed from the nozzle 6; reverse wash drainage lines 28, 29 through which the reverse wash drainage W 11 circulates; a treatment water flow rate regulation means V12 of regulating the flow rate of the filtration-treated water W2 in the treatment water line L11; a reverse wash difference pressure measurement means 42 where regulation means V12 is controlled in such a manner that, provided that the filter primary side pressure on the primary side of the filter 52 is defined as Pe1, the reverse wash drainage side pressure at the inside of the reverse wash drainage line is defined as Pe2, and the filter pressure difference of the filter 52 is defined as ΔPf, the reverse wash differential pressure ΔPg is prescribed as Pe1-Pe2-k(prescribed coefficient) ΔPf, and the reverse wash differential pressure ΔPg is measured; and a control means 9 of controlling the regulation means V12 in such a manner that the reverse wash differential pressure ΔPg measured by the measurement apparatus 42 exceeds the first standard differential pressure Pa.SELECTED DRAWING: Figure 1

    【課題】フィルタの逆洗性能を担保し、処理流量を多く確保するバラスト水処理装置を提供する。【解決手段】フィルタ52の外周面に逆洗水W2を噴射する逆洗水噴射ノズル6と、フィルタ52の内周面に向かって開口し、ノズル6から噴射された逆洗水である逆洗汚水W11を吸引する吸引ノズル4と、逆洗汚水W11が流通する逆洗汚水ライン28,29と、処理水ラインL11の濾過処理水W2の流量を調整する処理水流量調整手段V12と、フィルタ52の一次側のフィルタ一次側圧力をPe1とし、逆洗汚水ラインの内部の逆洗汚水側圧力をPe2とし、フィルタ52のフィルタ差圧をΔPfとする場合、逆洗差圧ΔPgをPe1−Pe2−k(所定の係数)・ΔPfと規定して、逆洗差圧ΔPgを測定する逆洗差圧測定手段42と、測定手段42により測定された逆洗差圧ΔPgが第1基準差圧Paを超えるように、調整手段V12を制御する制御手段9と、を備える。【選択図】図1


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    Titel :

    BALLAST WATER TREATMENT DEVICE


    Weitere Titelangaben:

    バラスト水処理装置


    Beteiligte:
    TANGE TOMOAKI (Autor:in)

    Erscheinungsdatum :

    2016-12-28


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    C02F Behandlung von Wasser, Schmutzwasser, Abwasser oder von Abwasserschlamm , TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE / B01D SEPARATION , Trennen / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS



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