Denitrification of groundwater using Brewer's spent grain as biofilter media

作者：Benyoucef N; Cheikh A; Drouiche N; Lounici H; Mameri N; Abdi N

来源：Ecological Engineering, 2013, 52: 70-74.

DOI：10.1016/j.ecoleng.2012.12.092

• Denitrification
• Water
• Bioreactor
• Brewer's spent grain

This study evaluated Brewer's spent grain as media for denitrification processes in treating groundwater. A laboratory scale reactor was inoculated with anaerobic sludge from a waste-water treatment plant. Optimization of running conditions were investigated under various parameters including: hydraulic retention time (HRT), influent nitrate loading and pH. The experimental results demonstrate that the optimum reaction parameters were: HRT = 100 min; N-NO3 = 200 mg L-1; pH =7.5-7.9. Vertical study showed that hydraulic retention time and pH affect significantly the nitrate removal, while nitrate loading do not affect the denitrification process.

• 出版日期2013-3