PURIFICATION MATERIAL AND PURIFICATION SYSTEM FOR HEAVY METALS ELUTED IN WATER IN HARBOR, CONDUIT, AND THE LIKE

WIPO Patent Application WO/2018/061498

A1

Provided is a heavy metal adsorbing/immobilizing agent and a heavy metal adsorbing/immobilizing system, which can adsorb and immobilize heavy metals in water efficiently and very easily without causing secondary damage to an ecosystem. The heavy metal adsorbing/immobilizing agent contains magnesium oxide, calcium oxide, and silicon oxide as primary components. The agent is characterized by the following: containing an oxide, a hydroxide, a chloride such as a sulfate, a carbonate, or a phosphate, and a clay mineral such as a crystalline clay mineral, a non-crystalline clay mineral, or a para-crystalline clay mineral as secondary components; and the primary components and the secondary components all being natural materials. The heavy metal adsorbing/immobilizing agent adsorbs and immobilizes heavy metals eluted in water in harbor, conduits, drain outlets, and the like by using the ion exchange/ion adsorption mechanism, the inter-layer intake mechanism of a layered crystal, or the insolubilization mechanism of a metal complex crystal.

OYAMA TAKASHI (JP)
KINJO ISAMU (JP)
TAKANO YOSHIAKI (JP)

PCT/JP2017/029359

April 05, 2018

August 15, 2017

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WORLD LINK INCORPORATED (JP)

C02F1/28; B01J20/10; B01J39/02; B01J39/09; B01J39/10; B63B59/04; C02F1/42; E02B1/00

JPS4824564A
JPS4834776A	1973-05-22
JP2006026616A	2006-02-02
JP2007125536A	2007-05-24
JP2001269664A	2001-10-02

KITAJIMA Tsuneyuki (JP)

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