Treating Plating Wastewater

Previously, the facility used hydroxide precipitation, combining caustic and magnesium hydroxide (Mg(OH)2). Caustic and Mg(OH)2 were added separately to the equalization/neutralization tank where pH was maintained at 7. Due tothe slow reaction of magnesium hydroxide, three mix tanks were used. Caust...

Full description

Saved in:
Bibliographic Details
Published in:Products Finishing 2001-03, Vol.65 (6), p.54-54
Main Authors: Kanluen, Ratana, Amer, Sultan I
Format: Magazinearticle
Language:English
Subjects:
Case notes
Coatings industry
Effluents
Heavy metals
Industrial wastes
Magnesium
Management
Metals
Methods
Plating
Sewage
Sludge
Toxicity
Waste management
Water treatment
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Previously, the facility used hydroxide precipitation, combining caustic and magnesium hydroxide (Mg(OH)2). Caustic and Mg(OH)2 were added separately to the equalization/neutralization tank where pH was maintained at 7. Due tothe slow reaction of magnesium hydroxide, three mix tanks were used. Caustic was added to the first chamber of the precipitation tank to raise the pH to 9.0-9.5 and to precipitate metal hydroxides. After precipitation, the pH was adjusted to about 9.0-9.5.
ISSN:0032-9940