Use of Ozone in Water Reclamation for Contaminant Oxidation
Client: WateReuse Foundation
Location: Alexandria, VA
Hazen and Sawyer is currently working with the Southern Nevada Water Authority on a project investigating the optimization of ozone in wastewater treatment for removal of trace organic contaminants, estrogenic activity, and total toxicity. We are performing a detailed cost analysis to evaluate the economic feasibility of full-scale ozone installations for wastewater.
Project Outcomes and Benefits
- Bench-, pilot-, and full-scale optimization of ozone for contaminant destruction and disinfection.
- Evaluation of DBP (i.e., NDMA and bromate) formation and mitigation strategies.
- Identification of transformation products and their associated estrogenicity and toxicity.
- Evaluation of aquifer recharge and recovery for the removal of oxidation byproducts, contaminants, and DBPs.
- Comprehensive cost analysis to evaluate the economic feasibility of full-scale ozone installations.
- Determine the underlying water quality parameters that can be used to predict ozone dose and efficacy (disinfection, contaminant oxidation) for any wastewater application.
Hazen and Sawyer is participating in a Southern Nevada Water Authority ozone study funded by a grant from the WateReuse Foundation (WRF-08-05) scheduled to be complete in December, 2012.
The project seeks to :
- Optimize the use of ozone in wastewater treatment by evaluating dose response relationships for disinfection and trace organic compound destruction
- Evaluate DBP (i.e., NDMA and bromate) formation and mitigation; identify transformation products of trace contaminants; and asses the estrogenic activity and toxicity of the transformation products
- Evaluate aquifer recharge and recovery for the removal of oxidation byproducts, recalcitrant trace organic contaminants, and DBPs
- Compare pilot-scale pretreatment and ozonation technologies with full-scale ozone installations
- Perform a comprehensive cost analysis to identify the most cost-effective strategy to incorporate ozone into wastewater treatment
For more information on this project, or to discuss a similar project in your area, contactBen Stanford, Ph.D. at firstname.lastname@example.org