Accession Number:

ADA167118

Title:

Nitrogen Removal in Cold Regions Trickling Filter Systems.

Descriptive Note:

Special rept.,

Corporate Author:

COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH

Personal Author(s):

Report Date:

1986-02-01

Pagination or Media Count:

51.0

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

Subject Categories:

  • Pumps, Filters, Pipes, Tubing, Fittings and Valves
  • Water Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE