Tanaka Kikinzoku Kogyo K.k.

Dowa Metals & Mining Co., Ltd.

Tetsuya Ueda

Jun Watanabe

Minoru Kawasaki

Matsunori Sawada

Yuzuru Nakamura

Hiroyasu Sato

Katsunori Yamaguchi

Takanori Kimura

Keiko Ishizaki

A waste liquid treatment device () treats water to be treated that contains at least hydrogen peroxide, by decomposing the hydrogen peroxide. The waste liquid treatment device () is equipped with a housing (), an introduction port () that is provided to the housing () and that introduces the water to be treated into the housing (), a discharge port () that is provided to the housing () and that discharges treated water to be obtained by treating the water to be treated, and one or more channel-defining members () that are disposed within the housing () and that have a surface that a catalyst is disposed on, wherein the one or more channel-defining members () define, between the introduction port () and the discharge port (), a channel (P) for the water to be treated, the channel (P) having a turning in at least one position.

Waste liquid treatment device and waste liquid treatment method

Provided is a method of unevenly distributing a specific element in a copper phase out of platinum group elements that exist in the copper phase, including further adding copper into a molten copper phase containing the platinum group elements including at least rhodium, thereby increasing a distribution ratio of rhodium in the molten copper phase.

Method of recovering platinum group elements

Growing community of inventors

Ichikawa, Japan

Tetsuya Ueda