Feasibility of anaerobic digestion on brown water
Phee, Veronica Pei Zhen.
Date of Issue2011
School of Civil and Environmental Engineering
With the aim of the recovery of energy and nutrients in a decentralized wastewater treatment system, brown water was characterized for its potential use as feedstock for anaerobic digestion. To determine its anaerobic biodegradability and methane yield, BMP (bio-methane potential) assay of brown water with different organic loadings were conducted under a mesophilic condition. The total volatile solids reductions at the end of the 30-days experiment were 49.2, 55.4, 55.4 and 59.61% for the 0.3, 0.5, 1.0 and 2.5 g VS/L organic loadings respectively. The methane yields, based on the total VS (Volatile Solids) removed, were 0.19, 0.16, 0.25 and 0.34 L CH4/g VS removed while the average methane contents of biogas were 71.7, 72.7, 73.2 and 67.0% for the 0.3, 0.5, 1.0 and 2.5g VS/L organic loadings respectively. The results of this study indicate that brown water is a favourable feedstock for anaerobic digestion with regards to its high biodegradability and methane yield.
DRNTU::Engineering::Environmental engineering::Water treatment
Final Year Project (FYP)
Nanyang Technological University