METHOD FOR REMOVING MERCURY

To provide a method for removing mercury, which can remove substantially all mercury from water to be treated containing mercury in a short time.SOLUTION: A method includes: an addition step of adding an iron salt of a compound having a dithiocarbamic acid structure to water to be treated to form a...

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Bibliographic Details
Main Authors YOSHIZAWA AYATO, NAKATSUKA SEIJI
Format Patent
LanguageEnglish
Japanese
Published 18.03.2021
Subjects
CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Summary:To provide a method for removing mercury, which can remove substantially all mercury from water to be treated containing mercury in a short time.SOLUTION: A method includes: an addition step of adding an iron salt of a compound having a dithiocarbamic acid structure to water to be treated to form a precipitate containing mercury, while keeping a pH value of the water to be treated to be 1.8 or less; and a removal step of removing the precipitate from the water to be treated that has formed the precipitate.SELECTED DRAWING: Figure 1 【課題】水銀を含有する被処理水から、実質的に全ての水銀を短時間で除去し得る水銀の除去方法を提供する。【解決手段】被処理水のｐＨ値を１．８以下に保ちながら、前記被処理水へジチオカルバミン酸構造を有する化合物の鉄塩を添加して、水銀を含有する沈殿を形成させる添加工程と、前記沈殿を形成した被処理水から、前記沈殿を除去する除去工程とを有する水銀の除去方法を提供する。【選択図】 図１
Bibliography:Application Number: JP20190164306