A filtration research program conducted at Duluth, Minnesota included pilot and full-scale plant studies to investigate the effectiveness of anionic polymers, the use of pH adjustment to reduce alum feed rate, the effects of various rapid mix velocity gradients on particulate removal, alternate fluoride chemical feed points, and the operational impact of exceptionally high turbidities experienced as a result of storms on Lake Superior. Includes 8 references, tables, figures.
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Edition: Vol. 72 - No. 3 Published: 03/01/1980 Number of Pages: 7File Size: 1 file , 1.6 MB