METHOD FOR A TREATMENT FOR WASTEWATER CONTAINING ALUMINUM, MAGNESIUM, AND MANGANESE
Patent №
US 9,751,783
Granted
2017-09-05
Filed 2012
Owner
SUMITOMO METAL MINING CO., LTD.
Lab
—
AI components
1
planning
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
13583145
The wastewater treatment method is to obtain demanganized wastewater, through a step wherein an acid or an alkali is added to sulfuric acid acidified wastewater to adjust pH to not less than 4.0 and not more than 6.0, whereby the sulfuric acid acidified wastewater is separated into a dealuminized solution and an aluminum precipitate; a step wherein a slurrying solution is added to the aluminum precipitate to form a slurry, then an alkali is added to adjust pH to not less than 9.0 and not more than 9.5, whereby an pH-adjusted aluminum precipitate slurry is formed; a step wherein an alkali is added to the dealuminized solution to adjust pH to not less than 8.0 and not more than 9.0; and others.
AI classification
Ownership
SUMITOMO METAL MINING CO., LTD.
assignment · 289080839
Assignors
KOBAYASHI, HIROSHI, HIGAKI, TATSUYA, SHOJI, HIROFUMI, TOKI, NORIHISA, KUDO, KEIJI, MITSUI, HIROYUKI, NAKAI, OSAMU
On an employer assignment, the assignors are typically the inventors.