• AWWA ACE54279
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AWWA ACE54279

  • Expanding a Conventional Surface Water Plant--An Evaluation of Membranes, High-Rate Sedimentation, UV, Chlorine Dioxide and Ozone
  • Conference Proceeding by American Water Works Association, 06/01/2001
  • Publisher: AWWA

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The City of Jackson, Mississippi, currently operates two water treatment plants, the J. H. Fewell water treatment plant (WTP), originally built in 1914, and the O.B. Curtis WTP (OBCWTP), which began operation in 1993. The J.H. Fewell WTP and the OBCWTP sources of raw water are the Pearl River and Ross Barnett Reservoir, respectively. Average water demand for both these facilities was 31.6 million gallons per day (mgd) from 1982 through 1996. Population projections indicate anaverage demand of 36.3 mgd will be required in 2011. However, to satisfy peak demand and fire flow requirements through 2012 a total maximum flow capacity of 75 mgd will be required. A 1997 Master Plan concluded that the current watertreatment facilities operated by the City of Jackson could not meet future demands and the requirements of newly proposed drinking water quality regulations. Based on this assessment, expansion of the existing facilities would be required. An evaluation of expansion options for both the J.H. Fewell WTP and the OBCWTP concluded that the J.H. Fewell plant was nearing its useful life and was continuing to deteriorate. Thus, additional water treatment capacity would be achieved by decommissioning the J.H. Fewell WTP and expanding the OBCWTP by 50 mgd. On June 16, 1998, the City of Jackson was issued an administrative order by the Mississippi Department of Environmental Quality (MDEQ) to eliminate the dischargeof alum sludge and other waste products from the J.H. Fewell WTP. The elimination of this discharge would require the installation of solids handling facilities at the J.H. Fewell WTP. Due to the large capital expenditure required for thisdeteriorating facility, it was determined the decommissioning of this facility and expansion of the OBCWTP be initiated to satisfy the administrative order. A compliance schedule was negotiated with MDEQ to include expansion of the OBCWTPto 75 mgd and the elimination of the alum sludge discharge from the Fewell WTP by January 1, 2006. In order to meet its water quality goals, the City pilot tested several different treatment processes including: membrane treatment; high-ratesedimentation; ozone disinfection; chloride dioxide disinfection, and, ultraviolet disinfection. Includes 2 references, tables, figure.

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