Title:
重金属含有水溶液用の排水浄化剤
Document Type and Number:
Japanese Patent JP6891653
Kind Code:
B2
Abstract:
To provide a compound having complexing ability with heavy metal and cleaning agent for reducing a heavy metal concentration in aqueous solution containing heavy metal, and a method for purifying heavy metal-containing aqueous solution using the same.SOLUTION: There is provided a water treatment method, including: adding a waste water treatment agent for a heavy metal-containing aqueous solution comprising a polyamine compound into a heavy metal-containing aqueous solution to form a solid material; and thereafter adding and coagulating an inorganic coagulant comprising an iron compound or an aluminum compound and a polymer coagulant; and removing heavy metal from the aqueous solution containing the heavy metal and the compound having complexing ability and heavy metal by solid-liquid separation.SELECTED DRAWING: None
Inventors:
Sayaka Kisanuki
Masahiro Hattori
Masahiro Hattori
Application Number:
JP2017115864A
Publication Date:
June 18, 2021
Filing Date:
June 13, 2017
Export Citation:
Assignee:
Tosoh Corporation
International Classes:
C02F1/62; C02F1/52; C02F1/56
Domestic Patent References:
| JP1099679A | ||||
| JP2008273995A | ||||
| JP9234450A | ||||
| JP91110A | ||||
| JP2004115639A | ||||
| JP2003105317A | ||||
| JP2003105318A | ||||
| JP9227855A | ||||
| JP995659A | ||||
| JP56168881A |
Foreign References:
| CN102125822A | ||||
| US4537937 |