Naturally Occurring Asbestos in Alaska and Experiences and Policy of Other States Regarding its Use

INE/AUTC 09.0

Investigation of an ozone-filter system for color and iron removal at low temperatures

The application of ozonation as a disinfectant and as a treatment process for both water and wastewater has been increasing in recent years. The study of ozone application to Arctic and subarctic waters, which are normally at low temperatures, has been limited. Many portions of the Alaskan Arctic and subarctic are plagued with waters which exceed the 1962 Drinking Water Standards for one or more parameters. The iron content and color of the water are among the most common offenders. This project was directed toward the examination of a method for water treatment utilizing ozone to meet the iron and color limits for drinking water. The three principle objectives of the project were: (1) to examine the effect of ozone on several known qualities of water, (2) to examine the effect of ozone on representative samples of surface and ground water, and (3) to develop a laboratory scale system for iron and color removal utilizing ozone followed by sand filtration.Financial support for this project was furnished by the Department of the Army Cold Regions Research and Engineering Laboratory, Grant Agreement Number BACA 89-74-G-046, and the Department of Health, Education, and Welfare Public Health Service, Contract Number 75-952-Kotzebue, both through the Institute of Water Resources