Provide PDF Format
AWWA WQTC55187
- Evaluation of Alternative Foulant and Scalant Control Methods for Nanofiltration/Reverse Osmosis Treatment of Surface Waters
- Conference Proceeding by American Water Works Association, 01/01/2001
- Publisher: AWWA
$12.00$24.00
This study evaluated three promising alternatives for pretreating Colorado River water (from the Central Arizona Project canal) prior to nanofiltration/reverse osmosis (NF/RO) treatment. Microfiltration was found to be the most appropriate pretreatment technology for the surface water that was evaluated. Slow sand filtration also appeared to produce water of desirable quality for NF/RO treatment. Membrane autopsy results indicated that catalytic conditioning was effective in controlling scaling from calcium-based salts but was ineffective in preventing sulfate scale formed from non-calcium co-ions such as barium and strontium. Chemical conditioning appeared to be effective in controlling both carbonate and sulfate scales. Since sulfate scale is more difficult to clean than carbonate scale and because of the high precipitation potential for barium sulfate in Colorado River water, chemical conditioning with acid and anti-scalant addition is recommended for this water. Includes tables, figures.
Related Products
AWWA WQTC59024
Treatment of a Seasonally Brackish Surface Water Using Integrated Membrane Systems..
$12.00 $24.00
AWWA ACE93164
The Reformation of Color Following Ozonation at the Palm Beach County WTP 2W..
$12.00 $24.00
AWWA JAW6262
Journal AWWA - Synthetic Adsorbents and Activated Carbons for Water Treatment: Statistical Analyses ..
$15.00 $30.00
AWWA WQTC65794
Minimizing Impacts from Animal Feeding Operations on Drinking Water Quality..
$12.00 $24.00