METHOD FOR TREATING SELENIUM-CONTAINING WATER

PROBLEM TO BE SOLVED: To provide a method for removing quadrivalent selenium from selenium-containing water and collecting the selenium-containing water as selenium, and regenerating an adsorbent.SOLUTION: A method for treating selenium-containing water includes: a selenium-containing water contacti...

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Hauptverfasser:	NANBU NOBUYOSHI, NANBU TADAHIKO, MORITA HIROKAZU
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS FERROUS OR NON-FERROUS ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for removing quadrivalent selenium from selenium-containing water and collecting the selenium-containing water as selenium, and regenerating an adsorbent.SOLUTION: A method for treating selenium-containing water includes: a selenium-containing water contacting step of bringing an adsorbent where a sulfur-containing functional group is bonded to a resin base material in contact with selenium-containing water; a base treatment step of bringing an adsorbent in contact with the selenium-containing water in contact with a basic solution; and an acid treatment step of bringing the adsorbent in contact with the basic solution in contact with an acidic solution.SELECTED DRAWING: Figure 1 【課題】本発明は、セレン含有水から４価のセレンを除去し、セレンとして回収するとともに、吸着材の再生を可能とする方法を提供することを目的とする。【解決手段】本発明に係るセレン含有水の処理方法は、樹脂基材に硫黄含有官能基が結合しているものである吸着材と、セレン含有水とを接触させるセレン含有水接触工程、セレン含有水に接触させた吸着材と塩基性溶液とを接触させる塩基処理工程、及び塩基性溶液に接触させた吸着材と酸性溶液とを接触させる酸処理工程とを含むことを特徴とする。【選択図】図１