Water treatment
    1.
    发明专利

    公开(公告)号:AP2013006827A0

    公开(公告)日:2013-04-30

    申请号:AP2013006827

    申请日:2011-09-28

    Abstract: The invention provides a method of reducing the sodium content of a water containing dissolved sodium ions, particularly a water with a sodium ion content of at least 100 ppm. Examples of such waters are effluents such as acid mine drainage and river waters. The method includes the steps of: (i) removing sodium, calcium and magnesium ions from the water by contacting the water with a cation exchange resin/s to capture sodium, calcium and magnesium ions thereon, (ii) treating the cation exchange resin/s of step (i) with nitric acid to produce an eluant containing sodium ions, calcium ions, magnesium ions nitrate ions and nitric acid, (iii) adding a carbonate to the eluant to precipitate the calcium and magnesium ions as calcium and magnesium carbonates; (iv) separating the precipitated carbonates from the eluant; and (v) treating the eluant from step (iv) to obtain a sodium and/or potassium nitrate product.

    WATER TREATMENT
    2.
    发明专利

    公开(公告)号:AP3665A

    公开(公告)日:2016-04-13

    申请号:AP2013006827

    申请日:2011-09-28

    Abstract: The invention provides a method of reducing the sodium content of a water containing dissolved sodium ions, particularly a water with a sodium ion content of at least 100 ppm. Examples of such waters are effluents such as acid mine drainage and river waters. The method includes the steps of: (i) removing sodium, calcium and magnesium ions from the water by contacting the water with a cation exchange resin/s to capture sodium, calcium and magnesium ions thereon, (ii) treating the cation exchange resin/s of step (i) with nitric acid to produce an eluant containing sodium ions, calcium ions, magnesium ions nitrate ions and nitric acid, (iii) adding a carbonate to the eluant to precipitate the calcium and magnesium ions as calcium and magnesium carbonates; (iv) separating the precipitated carbonates from the eluant; and (v) treating the eluant from step (iv) to obtain a sodium and/or potassium nitrate product.

    TRATAMIENTO DEL AGUA
    3.
    发明专利

    公开(公告)号:PE20140395A1

    公开(公告)日:2014-03-28

    申请号:PE2013000644

    申请日:2011-09-28

    Abstract: SE REFIERE A UN METODO PARA TRATAR AGUA QUE CONTIENE IONES DE MAGNESIO, CALCIO Y SODIO DISUELTO, QUE COMPRENDE: i) REMOVER LOS IONES DE MAGNESIO, CALCIO Y SODIO DEL AGUA AL PONER EN CONTACTO EL AGUA CON UNA RESINA DE INTERCAMBIO CATIONICO A FIN DE CAPTURAR LOS IONES; ii) TRATAR LAS RESINAS DE INTERCAMBIO CATIONICO DEL PASO (I) CON ACIDO NITRICO CON EL OBJETIVO DE PRODUCIR UN ELUYENTE QUE CONTENGA IONES DE SODIO, CALCIO ENTRE OTROS; iii) AGREGAR UN CARBONATO AL ELUYENTE A FIN DE PRECIPITAR LOS IONES DE CALCIO Y MAGNESIO COMO CARBONATO DE CALCIO Y CARBONATO DE MAGNESIO; iv) SEPARAR LOS CARBONATOS PRECIPITADOS DEL ELUYENTE; v) TRATAR EL ELUYENTE DEL PASO (iv) A FIN DE OBTENER UN PRODUCTO DE NITRATO DE POTASIO Y SODIO; vi) AGREGAR CLORURO DE POTASIO AL ELUYENTE; vii) TRATAR EL ELUYENTE DEL PASO (iii) PARA HACER QUE LOS IONES DE SODIO EN EL ELUYENTE SE CRISTALICEN COMO UN CLORURO DE SODIO; SEPARAR EL CLORURO DE SODIO CRISTALIZADO DEL ELUYENTE DEL PASO (iv) A FIN DE PRODUCIR CRISTALES DEL CLORURO DE SODIO Y UN ELUYENTE QUE CONTIENE NITRATO DE POTASIO EN SOLUCION; ix) RECUPERAR NITRATO DE POTASIO DEL ELUYENTE DEL PASO (viii). DICHO METODO ES UTIL PARA TRATAR LAS AGUAS ACIDAS DE LAS MINAS Y OBTENER AGUA POTABLE PARA SER UTILIZADA EN LA AGRICULTURA.

    Water treatment
    6.
    发明专利

    公开(公告)号:AU2011309692A8

    公开(公告)日:2013-10-10

    申请号:AU2011309692

    申请日:2011-09-28

    Abstract: The invention provides a method of reducing the sodium content of a water containing dissolved sodium ions, particularly a water with a sodium ion content of at least 100 ppm. Examples of such waters are effluents such as acid mine drainage and river waters. The method includes the steps of: (i) removing sodium, calcium and magnesium ions from the water by contacting the water with a cation exchange resin/s to capture sodium, calcium and magnesium ions thereon, (ii) treating the cation exchange resin/s of step (i) with nitric acid to produce an eluant containing sodium ions, calcium ions, magnesium ions nitrate ions and nitric acid, (iii) adding a carbonate to the eluant to precipitate the calcium and magnesium ions as calcium and magnesium carbonates; (iv) separating the precipated carbonates from the eluant; and (v) treating the eluant from step (iv) to obtain a sodium and/or potassium nitrate product.

    Water treatment
    7.
    发明专利

    公开(公告)号:AU2011309692A1

    公开(公告)日:2013-05-02

    申请号:AU2011309692

    申请日:2011-09-28

    Abstract: The invention provides a method of reducing the sodium content of a water containing dissolved sodium ions, particularly a water with a sodium ion content of at least 100 ppm. Examples of such waters are effluents such as acid mine drainage and river waters. The method includes the steps of: (i) removing sodium, calcium and magnesium ions from the water by contacting the water with a cation exchange resin/s to capture sodium, calcium and magnesium ions thereon, (ii) treating the cation exchange resin/s of step (i) with nitric acid to produce an eluant containing sodium ions, calcium ions, magnesium ions nitrate ions and nitric acid, (iii) adding a carbonate to the eluant to precipitate the calcium and magnesium ions as calcium and magnesium carbonates; (iv) separating the precipated carbonates from the eluant; and (v) treating the eluant from step (iv) to obtain a sodium and/or potassium nitrate product.

    WATER TREATMENT
    9.
    发明专利

    公开(公告)号:CA2812889A1

    公开(公告)日:2012-04-05

    申请号:CA2812889

    申请日:2011-09-28

    Abstract: The invention provides a method of reducing the sodium content of a water containing dissolved sodium ions, particularly a water with a sodium ion content of at least 100 ppm. Examples of such waters are effluents such as acid mine drainage and river waters. The method includes the steps of: (i) removing sodium, calcium and magnesium ions from the water by contacting the water with a cation exchange resin/s to capture sodium, calcium and magnesium ions thereon, (ii) treating the cation exchange resin/s of step (i) with nitric acid to produce an eluant containing sodium ions, calcium ions, magnesium ions nitrate ions and nitric acid, (iii) adding a carbonate to the eluant to precipitate the calcium and magnesium ions as calcium and magnesium carbonates; (iv) separating the precipated carbonates from the eluant; and (v) treating the eluant from step (iv) to obtain a sodium and/or potassium nitrate product.

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