Remediation of nitrate contaminated surface water using sulfur and limestone autotrophic denitrification

Conference · Wed Jul 01 00:00:00 EDT 1998

OSTI ID:20014908

Flere, J M; Zhang, T C

A study of the remediation of nitrate contaminated surface water using a sulfur and limestone autotrophic denitrification (SLAD) process was conducted. The system was operated with an influent nitrate-N concentration of 30 mg/L NO{sup {minus}}{sub 3}-N and a hydraulic retention time of 30 days. Nitrate removal efficiency was 95--100% with alkalinity control and 80--85% without alkalinity control. Sulfate production in the system varied greatly under mixed or aerobic conditions (1,500-2,000 mg/L SO{sup 2{minus}}{sub 4}) and unmixed or anaerobic conditions (800--1,100 mg/L SO{sup 2{minus}}{sub 4}).

• Research Organization: Univ. of Nebraska, Lincoln, NE (US)
• OSTI ID: 20014908
• Resource Relation: Conference: 1998 National Conference on Environmental Engineering, Chicago, IL (US), 06/07/1998--06/10/1998; Other Information: PBD: 1998; Related Information: In: Water resources and the urban environment--98, by Wilson, T.E. [ed.], 754 pages.
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
SURFACE WATERS
REMEDIAL ACTION
DENITRIFICATION
NITRATES
BENCH-SCALE EXPERIMENTS
SULFUR
LIMESTONE