Title :
A Polyvinyl Chloride Hollow Membrane Biofilm Reactor for Autohydrogenotrophic Denitrification of Drinking Water
Author :
Zhang, Yanhao ; Xia, Siqing ; Zhong, Fohua ; Yang, Ning
Author_Institution :
State Key Lab. of Pollution Control & Resource Reuse, Tongji Univ., Shanghai, China
Abstract :
A novel polyvinyl chloride hollow fiber was used in a membrane biofilm reactor (MBfR) as bubbleless gas-permeable membrane of H2 to remove nitrate from contaminated drinking water. The reactor was operated continuously over 103 days, and the results showed that the nitrate flux of 1.38 g/m2d was achieved at the influent nitrate concentration 20 mg NO3 --N/L and HRT 75 min with the effluent nitrate and nitrite below limit values of drinking water. The hydrogen contents of 3.5% in headspace or 57 ¿g/L in the effluent were lower enough to preclude having an explosive air.
Keywords :
bioreactors; groundwater; membranes; water treatment; autohydrogenotrophic denitrification; drinking water; groundwater; polyvinyl chloride hollow membrane biofilm reactor; water contamination; Biomembranes; Carbon dioxide; Educational institutions; Effluents; Electrons; Hydrogen; Inductors; Microorganisms; Water pollution; Water resources; Autohydrogenotrophic denitrification; Membrane biofilm reactor; Polyvinyl chloride membrane; drinking water;
Conference_Titel :
Energy and Environment Technology, 2009. ICEET '09. International Conference on
Conference_Location :
Guilin, Guangxi
Print_ISBN :
978-0-7695-3819-8
DOI :
10.1109/ICEET.2009.332
