Nitrogen Removal in Cold Regions Trickling Filter Systems.
Abstract
Trickling filters are found in about 50% of the operating wastewater treatment systems owned by the U.S. Army, and more likely for any new construction. Control of nitrogen, particularly ammonia in wastewater effluents is a growing necessity. Ammonia can be removed in trickling filters but the process is temperature-dependent. This study combined an intensive literature review with data collection at full-scale and pilot-scale systems. These results are presented and evaluated. A liquid temperature of at least 7 C is necessary in the filter bed for effective ammonia removal, and a separate single-purpose filter bed dedicated for nitrification is recommended when significant ammonia removal is required at cold regions locations. Criteria and equations are derived for future cold region system designs. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1986
- Accession Number
- ADA167118
Entities
People
- C. J. Diener
- P. B. Weyrick
- S. C. Reed
Organizations
- Cold Regions Research and Engineering Laboratory