Physicochemical and Chemical Purification of Tannery Wastewaters

In this study the process of tannery wastewater treatment by electrocoagulation and coagulation with FeCl sub(3) followed by advanced oxidation processes (Fenton reaction, O sub(3)/OH super(-), O sub(3)/H sub(2)O sub(2), H sub(2)O sub(2)/UV) was investigated. Electrocoagulation resulted in a slightl...

Full description

Saved in:
Bibliographic Details
Published in:Polish journal of environmental studies 2005-01, Vol.14 (6), p.789-797
Main Authors: Naumczyk, J, Rusiniak, M
Format: Article
Language:English
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this study the process of tannery wastewater treatment by electrocoagulation and coagulation with FeCl sub(3) followed by advanced oxidation processes (Fenton reaction, O sub(3)/OH super(-), O sub(3)/H sub(2)O sub(2), H sub(2)O sub(2)/UV) was investigated. Electrocoagulation resulted in a slightly better purification effect than coagulation. The purification effect obtained by AOPs decreased in the order: Fenton reaction 3/OH super(-)3/H sub(2)O sub(2) 2O sub(2)/UV. A two-step process (coagulation + H sub(2)O sub(2)/UV method) resulted in 93-94% reduction of COD. Coagulation followed by Fenton reaction in 30 min. was recognized as the best method of purification of tannery wastewaters - COD was reduced by 85-88%. The concentration of ammonium ions was decreased by 62-64% when O sub(3)/OH super(-) method was applied.
ISSN:1230-1485