Treatment Technology Overview

Several technologies have been used to treat perchlorate contamination of soils and waters (USEPA, 2005 ITRC, 2008 Logan, 2001). Initially, ex situ technology at the wellhead was used to treat perchlorate contamination of drinking water wells. Perchlorate was removed from potable water by pumping through granular activated carbon (GAC) or ion-exchange resin developed for removal of anions. There are two types of conventional ion exchange systems (1) single-pass systems, in which the resin is...

References

AFCEE (Air Force Center for Environmental Excellence). 2008. Technical Protocol for Enhanced Anaerobic Bioremediation using Permeable Mulch Biowalls. Prepared by Parsons Infrastructure and Technology Group, Inc., Denver, CO, USA. AFCEE, Naval Facilities Engineering Service Center (NFESC), and the Environmental Security Technology Certification Program (ESTCP). 2004. Principles and Practices of Enhanced Anaerobic Bioremediation of Chlorinated Solvents. Prepared by Parsons Infrastructure &...

How Did Perchlorate Become Such A Problem 121 Perchlorate Properties and Behavior in the Subsurface

Perchlorate (ClO4) is the oxidation product of chlorate (ClO3-). It is a negatively charged ion that consists of one chlorine atom and four oxygen atoms that form a weak association with a positively charged ion such as ammonium. As a result, perchlorate salts are extremely soluble in water and in polar organic solvents. The order of solubility of the common perchlorate salts is Because perchlorate salts are so soluble, the health risks associated with them are considered equivalent to those...

Template Site Characteristics And Variations Considered

The template base case site represents a situation where perchlorate is present in a shallow groundwater aquifer consisting of homogeneous silty sands and each of the four technologies being considered would likely be effective. The specific site characteristics for the base case are presented in Table 10.1, along with twelve variations on the base case characteristics that were considered in the evaluation of the sensitivity of costs to the various parameters. The physical configuration of the...