Arctic Aeromedical Laboratory. Aerospace Medical Division, Air Force Systems Command. Fort Wainwright, Alaska. Technical documentary report TDR-62-37. 5 p.
Arctic Health Research Center, U. S. Public Health Service, Department of Health, Education, and Welfare , Anchorage, Alaska
Source
Arctic Aeromedical Laboratory. Aerospace Medical Division, Air Force Systems Command. Fort Wainwright, Alaska. Technical documentary report TDR-62-37. 5 p.
A small carbon filter was investigated to determine the effectiveness of removing color from surface waters at remote Air Force radar sites in Alaska. The raw water was characterized by color ranging from 50 to 90 units, pH near 6, temperature 5° Celsius, and low turbidity. When using carbon with a particle size high enough to provide low pressure losses, the color removed was less than 50 per cent. With powdered activated carbon, pressure losses and carbon carryover caused the system to be considered unacceptable even though color removal was high.