Company Filing History:
Years Active: 2013-2017
Title: Innovations in Wastewater Treatment by Norihisa Toki
Introduction
Norihisa Toki, an accomplished inventor based in Niihama, Japan, has made significant contributions to the field of wastewater treatment. With a total of four patents to his name, his work primarily focuses on methods to improve the treatment of wastewater containing various metals, specifically aluminum, magnesium, and manganese.
Latest Patents
One of Toki's notable inventions is a method for treating wastewater that contains aluminum, magnesium, and manganese. This innovative wastewater treatment method involves several steps to demanganize the wastewater. The process begins with adjusting the pH of sulfuric acid acidified wastewater to a range between 4.0 and 6.0, leading to the separation of the wastewater into a dealuminized solution and an aluminum precipitate. Subsequently, Toki's method includes forming a slurry from the aluminum precipitate and adjusting the pH to create a pH-adjusted aluminum precipitate slurry. Furthermore, another significant patent addresses the removal of manganese from wastewater. This method selectively precipitates manganese while inhibiting the precipitation of magnesium, ensuring that manganese is effectively removed from the sulfuric acid wastewater.
Career Highlights
Norihisa Toki works at Sumitomo Metal Mining Company, Ltd., where he continues to advance his research and development in wastewater treatment technologies. His career is distinguished by his innovative approach to addressing environmental challenges through effective treatment solutions.
Collaborations
Throughout his career, Toki has collaborated with several esteemed colleagues, including Hiroshi Kobayashi and Hirofumi Shoji. Together, they have combined their expertise to enhance the efficiency and effectiveness of wastewater management solutions.
Conclusion
Norihisa Toki's contributions to wastewater treatment not only reflect his innovative spirit but also demonstrate a commitment to addressing critical environmental issues. His patents serve as valuable assets in the ongoing quest for cleaner water solutions, positioning him as a prominent figure in the field of environmental engineering.