期刊
BIORESOURCE TECHNOLOGY
卷 120, 期 -, 页码 157-164出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2012.06.051
关键词
Complex wastewater; Wet air oxidation; Pretreatment; Biodegradability index; Biogas generation potential
资金
- Department of Science Technology
- DBT
This study looks at the possibility of wet air oxidation (WAO) based pretreatment of complex effluent to selectively enhance the biodegradability (without substantial COD destruction) and facilitate biogas generation potential. A lab-scale wet air oxidation reactor with biomethanated distillery wastewater (B-DWW) as a model complex effluent (COD 40,000 mg L-1) was used to demonstrate the proof-of-concept. The studies were conducted using a designed set of experiments and reaction temperature (150-200 degrees C), air pressure (6-12 bar) and reaction time (15-120 min) were the main process variables of concern for WAO process optimization. WAO pretreatment of B-DWW enhanced the biodegradability of the complex wastewater by the virtue of enhancing its biodegradability index (BI) from 0.2 to 0.88, which indicate favorable Biochemical Methane Potential (BMP) for biogas generation. The kinetics of COD destruction and BI enhancement has also been reported. (C) 2012 Elsevier Ltd. All rights reserved.
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