METHOD FOR TREATMENT OF BORON-CONTAINING WATER

PROBLEM TO BE SOLVED: To provide a method for treating boron-containing water, capable of removing boron in wastewater. SOLUTION: The method for treating boron-containing water has a solution preparing process for preparing a solution with a pH of 10.5-11.5, which contains 25-200 mmol/L of calcium i...

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Main Authors KATO TOSHIRO, HORII YASUO, SUZUKI HIROSHI, HARADA YOSHIOKI, SEKO MASAHIRO, MASUZAKI MORIO
Format Patent
LanguageEnglish
Published 17.06.2004
Edition7
Subjects
CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Summary:PROBLEM TO BE SOLVED: To provide a method for treating boron-containing water, capable of removing boron in wastewater. SOLUTION: The method for treating boron-containing water has a solution preparing process for preparing a solution with a pH of 10.5-11.5, which contains 25-200 mmol/L of calcium ions, 6-30 mmol/L of sulfate ions and aluminum ions of which the amount brings an atomic ratio Al:B of boron and aluminum to 1.7-20:1, from the boron-containing water and a precipitation process for raising the pH of the solution to 11.0-12.0 to form a precipitate and coprecipitating or adsorbing boron on the precipitate to remove the same. Boron can be removed efficiently by the method for treatment of the boron-containing water. COPYRIGHT: (C)2004,JPO
Bibliography:Application Number: JP20020335077