Methanol as a carbon source for the denitrification of groundwater using rotating biological contactor
Conference
·
OSTI ID:416869
A pilot scale rotating biological contactor (RBC) was used to evaluate alternative carbon sources for the denitrification of groundwater. This. paper concentrates on the use of methanol as a carbon source and the efficiency of nitrate-nitrogen removal with respect to changing hydraulic retention time (HRT) and nitrate-nitrogen influent concentration. An attempt was made to establish the optimum methanol to nitrate-nitrogen ratio (MIN). The pilot bioreel plant was operated with an inflow of 150 1/hr at 20 {+-} 2{degrees}C. Up to 95% of nitrate-nitrogen removal was achieved at loading rate of 70 mg/m{sup 2}.hr. The optimum ratio of methanol to nitrate-nitrogen (M/N) ratio was found to be 2.88. The experimental results showed that the RBC could achieve more than 96.5% methanol removal efficiency under optimum M/N ratio. The corresponding residual methanol concentration in the effluent averaged 4.1 mg/l. The plant proved to be a reliable and stable system with low residual carbon in the effluent. The dominant denitrifying bacteria in the reactor were Psuedomonas mainly represented by the Ps. fluorescens, Ps. stutzeri and Ps. mondicina.
- OSTI ID:
- 416869
- Report Number(s):
- CONF-951023--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Contribution of methanogenesis to denitrification with an upflow filter
Biological upflow fluidized bed denitrification reactor demonstration project-Stamford, Ct.
Denitrification using a membrane-immobilized biofilm
Journal Article
·
Fri Sep 01 00:00:00 EDT 1989
· Research Journal of the Water Pollution Control Federation; (United States)
·
OSTI ID:6030688
Biological upflow fluidized bed denitrification reactor demonstration project-Stamford, Ct.
Conference
·
Fri Dec 30 23:00:00 EST 1994
·
OSTI ID:82791
Denitrification using a membrane-immobilized biofilm
Journal Article
·
Tue Feb 28 23:00:00 EST 1995
· Journal of the American Water Works Association; (United States)
·
OSTI ID:6487444