Skip to Main Content

Demonstrating Advanced Oxidation/Biofiltration for Pharmaceutical Removal in Wastewater

By
Karl Linden
Karl Linden
Search for other works by this author on:
Yaal Lester
Yaal Lester
Search for other works by this author on:
Nancy G. Love
Nancy G. Love
Search for other works by this author on:
Diana Aga
Diana Aga
Search for other works by this author on:
IWA Publishing
Volume
14
ISBN electronic:
9781780405155
Publication date:
January 2015

This project addresses the need to remove trace organic compounds (TOrC) from wastewater, as well as potentially hazardous oxidation products. The general goal was to evaluate the efficacy of UV-based advanced oxidation (UV/AOP) and UV/AOP in combination with bio-filtration, as an integrated treatment solution to degrade TOrC. The leading hypothesis was that UV/AOP may break down recalcitrant TOrC, generating biodegradable transformation products, which can be further removed by subsequent biofiltration. The first phase of the study, conducted on a bench-scale system, demonstrated the oxidation of iopromide by UV/H2O2 and the increased biodegradability of the transformation products (compared to the parent compound). In the second phase, the transformation of TOrC was examined in different largescale wastewater UV disinfection systems, under photolysis (low and medium pressure UV lamps) and de facto AOP (medium pressure UV lamp + native NO3) conditions. Results suggested that the transformation of TOrC at UV disinfection fluences (<200 mJ/cm2) were negligible, both under photolysis and AOP conditions. The last phase of the project demonstrated the applicability of different UV/AOPs (UV/H2O2 and UV/NO3) and subsequent biofiltration to remove contaminants from wastewater effluent in a pilot system. Results showed that, at high UV fluence (> 750 mJ/cm2), both AOPs could efficiently transform a variety of TOrC, and that the transformation products could be further removed by an aerated biological filter. Furthermore, UV/AOP transformation of the TOrC could be modeled using the probe compound sucralose, from which process efficacy could be calculated.

This title belongs to WERF Research Report Series

ISBN: 9781780405155 (eBook)

Demonstrating Advanced Oxidation/Biofiltration for Pharmaceutical Removal in Wastewater
By: Karl Linden, Yaal Lester, Nancy G. Love, Diana Aga
DOI: https://doi.org/10.2166/9781780405155
ISBN (electronic): 9781780405155
Publisher: IWA Publishing
Published: 2015

Download citation file:


×
This content is PDF only. Please click on the PDF icon to access.
Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal