Hydrogen-driven denitrification of wastewater in an anaerobic submerged membrane bioreactor: potential for water reuse.
An anaerobic submerged membrane bioreactor was coupled with a novel hydrogen delivery system for hydrogenotrophic denitrification of municipal final effluent containing nitrate. The biological treatment unit and hydrogen delivery unit were proven successful in removing nitrate and delivering hydrogen, respectively. Complete hydrogen transfer resulted in reducing nitrate below detectable levels at a loading of 0.14 kg Nm(-3) d(-1). The produced water met all drinking water guidelines except for color and organic carbon. However, the organic carbon was removed by 72% mostly by membrane rejection. To reduce the organic carbon and color of the effluent, post treatment of the produced water is required.
Rezania
B
B
Department of Civil Engineering, University of Manitoba, Winnipeg, MB, R3T 5V6, Canada. b.rezania@gmail.com
Oleszkiewicz
J A
JA
Cicek
N
N
D000693:Anaerobiosis; D019149:Bioreactors; D003247:Conservation of Natural Resources; D006859:Hydrogen / Q000032:analysis; D009566:Nitrates / Q000032:analysis; D009930:Organic Chemicals / Q000032:analysis; D014865:Waste Disposal, Fluid / Q000295:instrumentation* / Q000379:methods*
D009566:Nitrates; D009930:Organic Chemicals; D006859:Hydrogen