利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

2 条记录 (耗时 0.01 秒)

    METHOD FOR RECOVERING PHOSPHORUS AND USING SAME AS FERTILIZER
    1.
    发明公开
    METHOD FOR RECOVERING PHOSPHORUS AND USING SAME AS FERTILIZER 审中-公开
    回收磷和使用它作为肥料的方法

    公开(公告)号：EP2724987A1

    公开(公告)日：2014-04-30

    申请号：EP12802912.1

    申请日：2012-05-25

    申请人： Taiheiyo Cement Corporation ,  Onoda Chemical Industry Co., Ltd.

    发明人： AMAMOTO Yusaku ,  AKETO Tsuyoshi ,  NOMURA Koji ,  ICHITSUBO Kouki ,  MINOWA Nobutaka ,  NAKAMURA Hiroshi ,  NISHIMURA Yasumasa

    IPC分类号： C02F1/28 ,  B01J20/04 ,  C02F1/58 ,  C05B17/00 ,  C05F7/00

    CPC分类号： C02F1/001 ,  B01J20/10 ,  B01J20/28059 ,  B01J20/28071 ,  B01J20/3085 ,  C02F1/281 ,  C02F1/5245 ,  C02F2101/105 ,  C05B3/00 ,  C05D3/04 ,  C05F7/00 ,  Y02A40/213

    摘要： [PROBLEM] To recover phosphorus accumulated in a sewage-treatment plant or the like at a low cost in such a manner as to facilitate the utilization of the thus recovered phosphorus. To efficiently utilize the recovered phosphorus as a fertilizer.
    [SOLUTION] Phosphorus in waste water, which is a phosphorus source, is adsorbed by a phosphorus recovery material formed of an amorphous calcium silicate-based material and thus recovered. After adding the phosphorus recovery material to the waste water that is a phosphorus source, it is preferred to adjust the pH value of the waste water to 7.0 or higher. Also, it is preferred that the waste water that is a phosphorus source is decarbonated by reducing the pH value thereof to 6.0 or lower and then the phosphorus recovery material is added. As the phosphorus recovery material, an aggregate of an amorphous calcium silicate hydrate and Ca(OH) 2 and having a Ca/Si molar ratio of 0.8-20 inclusive is preferred. The aggregate may be obtained by solid-liquid separation and drying. Alternatively, a slurry or paste containing the aggregate may be used. The recovered phosphorus recovery material can be used as a fertilizer.

    摘要翻译： [问题]以便于回收利用如此回收的磷的方式以低成本回收积聚在污水处理厂等中的磷。 有效利用回收的磷作为肥料。 [解决方案]作为磷源的废水中的磷被由无定形硅酸钙基材料形成的磷回收材料吸附并因此回收。 在将磷回收材料添加到作为磷源的废水中之后，优选将废水的pH值调节至7.0或更高。 另外，优选通过将作为磷源的废水的pH值降低至6.0以下来进行脱碳酸，然后添加磷回收材料。 作为磷回收材料，优选无定形硅酸钙水合物与Ca（OH）2的合计，Ca / Si摩尔比为0.8〜20。 骨料可以通过固液分离和干燥获得。 或者，可以使用含有聚集体的浆液或糊剂。 回收的磷回收材料可以用作肥料。