Denitrification in a moving bed upflow sand filter

Journal Article · · Research Journal of the Water Pollution Control Federation; (USA)

OSTI ID:5672583

Koopman, B; Stevens, C M; Wonderlick, C A

The denitrification performance of a moving bed upflow sand filter with methanol added as a carbon source was evaluated. Hydraulic loading rates were varied between 3.4 and 11.0 m/d and influent NO{sub 2} + NO{sub 3}-N concentrations of up to 22 g/m{sup 3} were tested. The turnover rate of the sand bed ranged between 0.4 and 3.8 bed volumes/d. It was found that complete denitrification (effluent NO{sub 2} + NO{sub 3}-N {le} 1.0 g/m{sup 3}) was obtained at daily loadings of up to 2.7 kg/m{sup 3} total equivalent nitrate nitrogen (NO{sub 3}-N{sub eq}). The minimum methanol dosage required for complete denitrification was in the range of 3.3 to 3.5 g CH{sub 3}OH/g NO{sub 3}-N{sub eq}. Methanol leakage, as evidenced by an increase of BOD{sub 5} across the filter was negligible at dosages of 3.5 g/g NO{sub 3}N{sub eq} or less.

• OSTI ID: 5672583
• Journal Information: Research Journal of the Water Pollution Control Federation; (USA), Journal Name: Research Journal of the Water Pollution Control Federation; (USA) Vol. 62:3; ISSN 1047-7624; ISSN RJWFE
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320603 -- Energy Conservation
Consumption
& Utilization-- Municipalities & Community Systems-- Public Utilities-- (1980-)
54 ENVIRONMENTAL SCIENCES
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
ALCOHOLS
CHEMICAL REACTIONS
DENITRIFICATION
FILTERS
FUNCTIONAL MODELS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
LIQUID WASTES
LOAD ANALYSIS
METHANOL
NITRATES
NITRITES
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PILOT PLANTS
SAND
WASTE WATER
WASTES
WATER