Provide PDF Format
AWWA ACE63188
- Optimization of Biological Treatment of Perchlorate and Nitrate-Laden Ion Exchange Residuals
- Conference Proceeding by American Water Works Association, 06/01/2006
- Publisher: AWWA
$12.00$24.00
Purolite A-850 polyacrylic resin was chosen for this test, a run length of 255 bed volumes wasselected. Counter-current regeneration of the exhausted resin using a 6 percent NaCl solutionwas performed. Complete removal of nitrate (NO<sub>3</sub><sup>-</sup>, sulfate (SO<sub>4</sub><sup>-</sup>, bicarbonate(HCO<sub>3</sub><sup>-</sup>) and perchlorate (ClO<sub>4</sub><sup>-</sup>) was achieved in 13 BV. Based on this, a partial regeneration of21 lbs/ft<sup>3</sup> was selected for the resin during baseline testing. The biological brine treatmentsystem was housed in a sequencing batch reactor (SBR) and demonstrated that the process wasable to consistently reduce perchlorate and nitrate concentrations in the spent brine (6 percentNaCl) to below treatment goals (ClO<sub>4</sub><sup>-</sup> < 100 µg/L and NO<sub>3</sub><sup>-</sup> < 0.5 mg/L) for 20 (re)cycles.Results for 20 cycles of exhaustion and regeneration of resin using treated brine showed that theIX process could successfully remove perchlorate and nitrate. Includes 20 references, tables, figures.
Related Products
AWWA ACE70633
Testing Long Term Changes for Compliance with Lead and Copper Rule Revisions..
$12.00 $24.00
AWWA JAW61916
Journal AWWA - Ten Primary Trends and Their Implications for Water Utilities..
$15.00 $30.00
AWWA C111/A21.11-12
Rubber-Gasket Joints for Ductile-Iron Pressure Pipe and Fittings..
$41.00 $81.00
AWWA JAW34938
Journal AWWA - Survey Says Water Utility Advisory Councils Are a Success..
$15.00 $30.00