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    METHOD OF TREATING A DIGESTATE FROM A BIOGAS PROCESS
    9.
    发明公开
    METHOD OF TREATING A DIGESTATE FROM A BIOGAS PROCESS 有权
    VERFAHREN ZUR BEHANDLUNG EINESGÄRRESTESAUS EINEM BIOGASPROZESS

    公开(公告)号：EP2874957A1

    公开(公告)日：2015-05-27

    申请号：EP13739391.4

    申请日：2013-07-12

    申请人： KEMIRA OYJ

    发明人： GRÖNFORS, Outi

    IPC分类号： C02F9/00 ,  C02F1/66 ,  C02F1/72 ,  C02F1/52 ,  C02F1/56 ,  C02F11/12 ,  C02F103/32 ,  C02F103/20 ,  C02F103/22

    CPC分类号： C02F11/14 ,  C02F1/5245 ,  C02F1/56 ,  C02F1/66 ,  C02F1/722 ,  C02F11/122 ,  C02F11/123 ,  C02F11/125 ,  C02F11/127 ,  C02F2103/20 ,  C02F2103/22 ,  C02F2103/32

    摘要： The present disclosure relates to a method of treating a slurry comprising a digestate from a biogas plant, which biogas plant is fed a feedstock comprising about 50 to 100 weight-% of products and wastes from farms, and/or food and beverage handling, said method comprising the steps of: a) providing the slurry comprising a digestate from a biogas plant, b) obtaining an acidic slurry at a pH of at most 6.5, by addition of an acidic material to lower the pH of the slurry comprising a digestate from a biogas plant, if the slurry comprising a digestate from a biogas plant is not already at a pH of at most 6.5, c) supplying the slurry with an iron salt, d) supplying the slurry with an oxidiser selected from hydrogen peroxide and percompounds, and allowing to react, e) adding a flocculating polymer to the slurry obtained in d), f) dewatering the slurry obtained in e), wherein steps b) to d) may be performed in any order or some or all may be performed simultaneously.

    摘要翻译： 本公开涉及一种处理包含来自沼气工厂的消化物的浆料的方法，该沼气工厂被供给包含约50至100重量％的来自农场的产品和废物和/或食品和饮料处理的原料，所述方法 方法包括以下步骤：a）提供包含来自沼气工厂的消化物的浆料，b）通过加入酸性物质获得pH至多为6.5的酸性浆液，以降低包含消化物的浆料的pH值 如果包含来自沼气工厂的消化物的浆料的pH值至多不超过6.5，则c）向所述浆料供应铁盐，d）向所述浆料供应选自过氧化氢和化合物的氧化剂， e）在d）中得到的浆料中加入絮凝聚合物，f）使e）中得到的浆料脱水，其中步骤b）至d）可以以任何顺序进行，或者部分或全部可以同时进行 。