Description
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.
Product Details
- Edition:
- Vol. – No.
- Published:
- 06/01/2006
- Number of Pages:
- 11
- File Size:
- 1 file , 280 KB
- Note:
- This product is unavailable in Ukraine, Russia, Belarus
