WATER TREATMENT METHOD

To provide a water treatment method capable of efficiently insolubilizing sulfate ions in treated water using barium carbonate.SOLUTION: A water treatment method has a step in which barium carbonate and an alkali metal chloride are added to treated water containing sulfate ions to obtain treated wat...

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Main Authors MURAKAMI IKU, IWATA YUSUKE, KAWASHIMA AKIRA, NUMAGUCHI MASAKI, HIGUCHI YUKIO, KOBAYASHI AI
Format Patent
LanguageEnglish
Japanese
Published 26.07.2021
Subjects
CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Abstract To provide a water treatment method capable of efficiently insolubilizing sulfate ions in treated water using barium carbonate.SOLUTION: A water treatment method has a step in which barium carbonate and an alkali metal chloride are added to treated water containing sulfate ions to obtain treated water in which at least some of the sulfate ions contained in the treated water have become insoluble. The water treatment method may further comprise the step of adding barium chloride and a basic compound to the treated water to obtain a second treated water.SELECTED DRAWING: None 【課題】炭酸バリウムを用いて被処理水中の硫酸イオンを効率的に不溶化することができる水処理方法を提供する。【解決手段】本発明の水処理方法は、硫酸イオンを含有する被処理水に炭酸バリウムとアルカリ金属塩化物を添加して、被処理水に含まれる硫酸イオンの少なくとも一部が不溶化した処理水を得る工程を有する。本発明の水処理方法は、前記処理水に塩化バリウムと塩基性化合物を添加して第２処理水を得る工程をさらに有するものであってもよい。【選択図】なし
AbstractList To provide a water treatment method capable of efficiently insolubilizing sulfate ions in treated water using barium carbonate.SOLUTION: A water treatment method has a step in which barium carbonate and an alkali metal chloride are added to treated water containing sulfate ions to obtain treated water in which at least some of the sulfate ions contained in the treated water have become insoluble. The water treatment method may further comprise the step of adding barium chloride and a basic compound to the treated water to obtain a second treated water.SELECTED DRAWING: None 【課題】炭酸バリウムを用いて被処理水中の硫酸イオンを効率的に不溶化することができる水処理方法を提供する。【解決手段】本発明の水処理方法は、硫酸イオンを含有する被処理水に炭酸バリウムとアルカリ金属塩化物を添加して、被処理水に含まれる硫酸イオンの少なくとも一部が不溶化した処理水を得る工程を有する。本発明の水処理方法は、前記処理水に塩化バリウムと塩基性化合物を添加して第２処理水を得る工程をさらに有するものであってもよい。【選択図】なし
Author HIGUCHI YUKIO
MURAKAMI IKU
KOBAYASHI AI
IWATA YUSUKE
NUMAGUCHI MASAKI
KAWASHIMA AKIRA
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Snippet To provide a water treatment method capable of efficiently insolubilizing sulfate ions in treated water using barium carbonate.SOLUTION: A water treatment...
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SubjectTerms CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Title WATER TREATMENT METHOD
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