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    METHOD AND SYSTEM FOR REDUCING PHOSPHORUS IN EFFLUENT OR FILTRATE
    6.
    发明公开
    METHOD AND SYSTEM FOR REDUCING PHOSPHORUS IN EFFLUENT OR FILTRATE 审中-公开
    VERFAHREN UND SYSTEM ZUR VERRINGERUNG VON POSPHOR IN EINEM ABWASSER ODER FILTRAT

    公开(公告)号：EP3126295A1

    公开(公告)日：2017-02-08

    申请号：EP15717528.2

    申请日：2015-03-30

    申请人： UPM-Kymmene Corporation

    发明人： RISTOLAINEN, Matti ,  TRAVERS, Dayana

    IPC分类号： C02F1/52 ,  C02F1/66 ,  D21C11/00 ,  C02F103/28

    CPC分类号： C02F1/5236 ,  C02F1/001 ,  C02F1/66 ,  C02F2001/5218 ,  C02F2101/105 ,  C02F2103/28 ,  C02F2301/043 ,  D21C11/0085 ,  Y02P40/44

    摘要： The invention relates to a method for reducing phosphorus in effluent or filtrate from a process which comprises at least one stage in which conditions are acidic, wherein the method comprises the steps of: a) obtaining a first portion of an effluent or filtrate from a stage in which conditions are acidic; b) obtaining a second portion of an effluent or filtrate from the same or different stage in which conditions are acidic; c) adjusting pH of the first portion of the effluent or filtrate to alkaline with an alkaline agent; d) allowing phosphorus to be precipitated in form of a phosphate salt; e) separating using centrifugal forces the precipitate to produce purified effluent or filtrate; and f) combining the purified effluent or filtrate with the second portion of the effluent or filtrate. The process may be a chemical pulping process in which pulp is cooked in a digestion apparatus (1), washed in a washing apparatus (2), bleached in a bleaching apparatus (3) in which an acidic bleaching stage (3') takes place, after which the pulp is separated in a separation apparatus (4) from an acidic effluent or filtrate which is divided into the first and second portions of effluent or filtrate. The invention also relates to the corresponding chemical pulping and purification apparatus.

    摘要翻译： 本发明涉及一种从流程或滤液中还原磷的方法，该方法包括至少一个条件为酸性的阶段，其中该方法包括以下步骤：a）从一个阶段获得流出物或滤液的第一部分 其中条件是酸性的; b）从条件为酸性的相同或不同阶段获得流出物或滤液的第二部分; c）用碱性剂将流出物或滤液的第一部分的pH调节至碱性; d）使磷以磷酸盐的形式沉淀; e）使用离心力将沉淀物分离以产生纯化的流出物或滤液; 和f）将纯化的流出物或滤液与流出物或滤液的第二部分组合。 该方法可以是一种化学制浆方法，其中将纸浆在消化装置（1）中煮熟，在洗涤装置（2）中洗涤，在漂白装置（3）中漂白，其中发生酸性漂白阶段（3'） 之后，在分离装置（4）中将纸浆从分离成流出物或滤液的第一和第二部分的酸性流出物或滤液中分离。 本发明还涉及相应的化学制浆和净化装置。

    METHOD AND SYSTEM FOR REDUCING PHOSPHORUS IN EFFLUENT OR FILTRATE
    10.
    发明公开
    METHOD AND SYSTEM FOR REDUCING PHOSPHORUS IN EFFLUENT OR FILTRATE 有权
    用于还原流出物或过滤物中的磷的方法和系统

    公开(公告)号：EP3126297A1

    公开(公告)日：2017-02-08

    申请号：EP15717530.8

    申请日：2015-03-30

    申请人： UPM-Kymmene Corporation

    发明人： RISTOLAINEN, Matti ,  HASSINEN, Esa ,  SAARELA, Sami

    IPC分类号： C02F1/52 ,  C02F1/66 ,  D21C11/00 ,  C02F103/28

    CPC分类号： C02F1/5236 ,  C02F1/001 ,  C02F1/66 ,  C02F2001/5218 ,  C02F2101/105 ,  C02F2103/28 ,  C02F2301/043 ,  D21C11/0028 ,  D21C11/0042 ,  D21C11/0085 ,  D21C11/02 ,  Y02P40/44

    摘要： The invention relates to a method for reducing phosphorus in effluent or filtrate from a process which comprises a stage in which green liquor dregs are filtered using a green liquor dregs filter and at least one stage in which conditions are acidic, wherein the method comprises the steps of: a) obtaining an effluent or filtrate from a stage in which conditions are acidic; b) adjusting pH of at least a portion of the ef- fluent or filtrate to alkaline with an alkaline agent; c) allowing phosphorus to be precipitated in form of a phosphate salt; d) separating the precipitate to produce purified effluent or filtrate and a sludge comprising the precipitate; and e) filtering the sludge comprising the precipitate obtainable from step d) using the green liquor dregs filter.

    摘要翻译： 本发明涉及一种用于减少来自包括使用绿液渣过滤器和至少一个其中条件为酸性的阶段过滤绿泥渣的阶段的方法的流出物或滤液中的磷的方法，其中所述方法包括步骤 ：a）从条件为酸性的阶段获得流出物或滤液; b）用碱性试剂调节至少一部分洗脱液或滤液的pH至碱性; c）使磷以磷酸盐的形式沉淀; d）分离沉淀物以产生纯化的流出物或滤液和包含沉淀物的污泥; 和e）使用绿液渣过滤器过滤包含从步骤d）获得的沉淀物的污泥。