2019 AWWA Water Quality Technology Conference (WQTC)
Join us at the premier conference for water quality, 2019 AWWA WQTC.
We’re excited to be the lanyard sponsor and presenting at the 2019 Water Quality Technology Conference. We hope you will join us as we share research, case studies and insights on topics such as:
- Selecting treatment technology to improve water quality
- Overcoming obstacles to water supply management
- Managing emerging contaminants that threaten public health
- Water quality monitoring to predict future vulnerabilities
Our WQTC Conference Sessions
Ozone for Geosmin and Algal Toxins: Designing Ashland’s New WTP
- Speaker: Katie Walker
- Co-Authors: Pierre Kwan, Rich Stratton, Verena Winter
This presentation covers the City of Ashland's methodology for selecting treatment processes for its new water treatment plant. The City has experienced taste and odor events caused by geosmin and Microcystin-LR detection during algal blooms. The final treatment process includes ozone and the presentation will also cover the bench-scale study to optimize the system.
Renewable Energy Desalination in the Middle East: KAEC SWRO Plant as a Case Study
- Co-Author: Pierre Kwan
Desalination is becoming an increasingly common means of increasing and diversifying a water utility’s water supply portfolio. However, a key disadvantage that is limiting the use of this process is that it is very energy-intensive compared to other water supply options. This presentation shares a case study in which a utility added solar photovoltaic arrays to partially offset this energy consumption. We will share the lessons learned on the cost/benefit of adding the PV array, net impact to plant operational costs, and design intricacies that must be considered.
Water Quality Vulnerability Assessment of Santa Cruz, CA
- Speaker: Rich Stratton
This presentation will discuss data about the watershed and incoming feedwater to the treatment plant that was collected by the City of Santa Cruz during the last few years. It will also provide feedback received by an expert panel put together by the City of Santa Cruz and HDR. The main goal of the study was to assess the possible vulnerabilities to the water quality currently and for the next 20-30 years. Data discussion and conclusions will be useful for other utilities to plan future upgrades to maintain compliance with regulations that may be promulgated in the timeframe. The technologies of a proposed treatment train will be discussed as to how they will remove specific contaminants such as cyanotoxins, CECs, and reduction of DBPs.
Bench-Scale Evaluation of Biological Reduction of Multi-Contaminants Enhanced by Zero Valent Iron (ZVI)
- Speaker: John Michael Gonzales
Zero-valent iron has been used previously and successfully to foster abiotic and biotic reductions of oxyanions, particularly, chromate, arsenate, nitrate, chlorate, and perchlorate.
Reducing Copper Plumbing Corrosion to Protect World-Renowned Sportfishing River
- Speaker: Pierre Kwan
- Co-Author: Ryan Moyers
This is a presentation in which wastewater issues are driving changes at a drinking water treatment plant. The City of Soldotna, Alaska operates the drinking water and wastewater utilities. The drinking water utility has always been successful in complying with the Lead and Copper Rule. However, the wastewater utility is facing a revised discharge permit that greatly reduces the allowable copper that can be discharged into the Kenai River. The vast majority of the copper in the wastewater is from building plumbing corrosion. This presentation shows what actions were considered for enhanced copper corrosion reduction and demonstrates the limits of what can be cost-effectively achieved to meet ever stringent environmental regulations.
How Green is My Water – Addressing Harmful Algal Blooms through Ozone and Peroxone
- Speaker: Peter D'Adamo
- Co-Author: Christina Alito
Concerns over harmful algal blooms include taste and odor compounds as well as the proliferation of cyanotoxins. Proliferation of HABs appears to be increasing throughout the country and is attributable to many factors including population growth, nutrient discharges, and climate events. Several utilities have experienced geosmin and MIB concentrations several orders of magnitude greater than the odor thresholds for each compound. High concentrations of taste and odor compounds require advanced treatment such as GAC, ozone, AOP, and biofiltration. This presentation will focus on two case studies where peroxone was evaluated at the bench scale to mitigate taste and odor compounds.
Pilot Testing Granular Activated Carbon and Ion Exchange for the Removal of Per- and Poly-Fluoroalkyl Substances from an Aquifer System
- Speakers: Christina Alito, Samantha Black
- Co-Authors: Peter D'Adamo, Jerrine Foster
This presentation will discuss PFAS removal results from a granular activated carbon and ion exchange pilot study at an Aquifer Storage and Recovery site. These pilots operated in parallel for five months, over a range of empty bed contact times. Additionally, mini-pilot columns were set up to evaluate a GAC/IX lead/lag configuration. Results shared during this presentation will include PFAS and CEC removal and breakthrough for GAC and IX pilots as well as results from mini-column tests.
Benefits and Challenges Associated of Microbial Community Analysis in Biofiltration Applications
- Speaker: Chance Lauderdale
- Co-Author: Christina Alito
This presentation will describe the use of molecular techniques to quantify and characterize the microbial community present in drinking water biofilters. The presentation will review the results of WRF 4620, which sought to identify viable and practical monitoring tools for biofiltration applications. Data from samples collected at three utilities will be compared and benefits and challenges associated with microbial community analysis will be discussed.
Dealing with Varying Source Water Quality from Multiple Water Supplies
- Speaker: Robert Hoffman
This presentation provides perspective on the challenges North Texas faces with planning for the implementation of additional water supplies and dealing with multiple water sources, varying water quality, and treatability implications.
Acting Fast to Remove PFAS
- Speaker: Beth Mende
- Co-Author: Pierre Kwan
This presentation will focus on PFAS as a contaminant of concern and the implementation of PFAS treatment technologies. It will provide a comparison of the two most common treatment technologies (granular activated carbon and ion exchange) for the removal of PFAS, including run time data, operation and maintenance requirements, waste residuals management, and overall removal efficiency and performance. Challenges faced by utilities in implementing and operating new treatment systems, including the costs for implementation, will also be discussed.