Advanced oxidation process H2O2/UV combined with anaerobic digestion to remove chlorinated organics from bleached kraft pulp mill wastewater
In: Revista Facultad de Ingeniería Universidad de Antioquia, 2012, Heft 63, S. 43-54
Online
academicJournal
- print, 29 ref
Zugriff:
This study investigated the application of an advanced oxidation process combining hydrogen peroxide with ultraviolet radiation (H2O2/UV) to remove recalcitrant compounds from Kraft bleaching effluent. Anaerobic pre-treatment was performed to remove easily degraded organics using a horizontal-flow anaerobic immobilized biomass (HAIB) reactor. Bleaching plant effluent was treated in the HAIB reactor processed over 19 h of hydraulic retention time (HRT), reaching the expected removal efficiencies for COD (61 ± 3%), TOC (69 ± 9%), BOD5 (90 ± 5%) and AOX (55 ± 14%). However, the anaerobic treatment did not achieve acceptable removal of UV254 compounds. Furthermore, there was an increase of lignin, measured as total phenols. The H2O2/UV post-treatment provided a wide range of removal efficiencies depending on the dosage of hydrogen peroxide and UV irradiation: COD ranged from 0 to 11%, UV254 from 16 to 35%, lignin from 0 to 29% and AOX from 23 to 54%. All peroxide dosages applied in this work promoted an increase in the BOD5/COD ratio of the wastewater. The experiments demonstrate the technical feasibility of using H2O2/UV for post-treatment of bleaching effluents submitted to anaerobic pre-treatment.
Titel: |
Advanced oxidation process H2O2/UV combined with anaerobic digestion to remove chlorinated organics from bleached kraft pulp mill wastewater
|
---|---|
Autor/in / Beteiligte Person: | BOTELHO RUAS, Diego ; RODRIGUEZ CHAPARRO, Tatiana ; CLETO PIRES, Eduardo |
Link: | |
Zeitschrift: | Revista Facultad de Ingeniería Universidad de Antioquia, 2012, Heft 63, S. 43-54 |
Veröffentlichung: | Medellín: Facultad de Ingeniería. Universidad de Antioquia, 2012 |
Medientyp: | academicJournal |
Umfang: | print, 29 ref |
ISSN: | 0120-6230 (print) |
Schlagwort: |
|
Sonstiges: |
|