AWWA WQTC65875

This powerpoint presentation begins by providing background information on the City of Cheyenne, Wyoming's sources of raw water supply and an extreme manganese event that occurred in 2006. Causes of the manganese event are presented, along with existing plant processes utilized for treatingmanganese during the event, and effective oxidation at right location was key tooxidize manganese for removal. Conclusions for manganese management included:source of manganese release is Crystal Lakesediments;long term solution must control manganeserelease in Crystal Lake;release of manganese from pipelinescontributes to event;best manganese removal occurs when oxidationcompleted before settling; and,plant design inadequate for removing high levelsof manganese. An alternatives matrix is presented, along with major recommendations for action that include: aerate at depth in Crystal Lake; and, feed potassium permanganate to raw watertransmission pipelines to oxidize Mn/Fe. Includes table, figures.

Product Details

Edition:

Vol. - No.

Published:

11/01/2007

Number of Pages:

19

File Size:

1 file , 780 KB