Meeting/Event Information

6th Annual Water Quality & Treatment Symposium

November 21, 2019 - November 21, 2019
8:30 AM  4:00 PM

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Norwich Inn & Spa
607 West Thames Street
Norwich, CT 06360
https://www.thespaatnorwichinn.com/
 Directions

8:00 – 8:30       Registration

8:30 – 9:15      Innovative Algae Control Strategies

Bob Kortmann, Ph.D.- President/Founder of Ecosystem Consulting Service, Inc.

Greg Eiffert, Director of LG Sonic US

Algae in surface waters is a problem many water utilities face each year. Source water protection and watershed management programs aim to solve the problem at the source and have led to significant improvements in many cases as nutrient and sediment loads decrease. However, the fact remains that algae are apt to grow in nearly any lake or reservoir given the right conditions. Historically, it was common for water suppliers to use copper sulfate or other chemicals to control algae. Physical barriers like boom curtains have also been used to varying degrees of success. Today, however, there are innovative non-chemical methods to control and minimize algal activity using ultrasonic technology. This presentation will describe how ultrasonic algae control strategies work and provide interesting case studies in Connecticut and throughout the world where they have successfully been deployed.

9:15 – 10:00    Optimizing Organic Removal while Complying with Stage 2 DBP Regulations

Amanda Scott, Suez Water Technologies & Solutions

Optimizing Organic Removal while Complying with Stage 2 DBP Regulations. Total Organic Carbon (TOC) Monitoring is one of the most important parameters that drinking water facilities use to make decisions about treatment. Proactive process control, such as TOC monitoring, can help save a plant time and money. Smarter jar testing using onsite TOC can help you zero in on your best treatment option. In the past, operators would send out samples for testing but those could take days or even weeks to get results. By the time results are available, there could be non-compliant water well into the distribution system and the current water could be completely different from that which was analyzed. Real time data can help a plant make proactive decisions, before there is a problem, as opposed to reactive decisions. The TOC % removal results from proactive jar testing can be used further in a THM formation potential test. The THM formation potential test allows you to determine if the coagulant being used is targeting and removing the right organics (TOC precursors) responsible for DBP formation. By knowing TOC throughout a treatment plant, you can make smarter decisions that can lead to cost savings, time savings, and quality compliant water for the entire distribution system.             

10:00-10:15     BREAK

10:15-11:00     Analyzing Causes and Solutions for TTHM Compliance

Adam Kran, P.E., Project Manager, Environmental Partners

Alysa Longo, Engineer, Environmental Partners

The Abington/Rockland Joint Water Works (ARJWW) is a public water supplier that maintains 6 water sources, 4 storage tanks, and over 120 miles of water main, serving approximately 11,400 customer accounts in southeastern Massachusetts. In December 2018, ARJWW received a Notice of Non-Compliance (NON) from the Massachusetts Department of Environmental Protection (DEP) after exceeding the Locational Running Annual Average for total trihalomethanes (TTHMs) at one distribution system monitoring site. In the following months, Environmental Partners conducted an alternatives analysis to identify potential sources of the elevated TTHMs and to develop strategies for returning the system to compliance. By following the recommendations of the alternatives analysis, ARJWW quickly came back into compliance with the Disinfection Byproduct Rule and has a cost-effective strategy for maintaining long-term compliance. This presentation will focus on the proposed solutions to reduce TTHMs in the distribution system as well as recommended best practices for meeting the NON requirements.

11:00-11:45     Analyzing and Utilizing Multiple Strategies for Maintaining DBP Compliance

Nick Rossi, PE, Operations Engineer, Aquarion Water Company

In the third quarter of 2019 Aquarion Water Company observed increasing DBP concentrations leaving the Putnam Water Treatment Plant in Greenwich, CT. Immediate action was taken to understand the causes and potential solutions. The data collected and process changes considered provide useful discussion around DBPs and competing water quality parameters/operational restrictions. Some topics that will be broadly covered include: climate effects on raw water quality, filter backwash recycling, chlorine dioxide as a pre-oxidant, algae as a DBP pre-cursor, removal of iron and manganese, minimum distribution system chlorine residuals, and powdered activated carbon addition to raw water.

11:45-12:45     LUNCH

12:45-1:30       Regulatory Update – CT DPH            

1:30-2:15         PFAS in my Water Supply – How did it get there?

Richard Desrosiers, LEP, PG, Associate, GZA GeoEnvironmental, Inc,

PFAS is a generic name given to 1,000’s of man-made compounds manufactured since the 1940’s. These compounds have been widely used in industry, for waterproofing, in firefighting (airports, military bases, training facilities), at car washes and personal care products. PFAS compounds have found their way into the atmosphere, leaching fields, landfills, wastewater treatment plants impacting soil, groundwater, surface water and biota. In short, they are ubiquitous in the environment.   This presentation will explore the fate and transport mechanisms of how PFAS might enter a water supply system and how a water supply company might evaluate their potential PFAS risk.

2:15-2:30         BREAK

2:30-3:15         Effective Strategies for Planning and Managing Risks of PFAS Contamination in Drinking Water Supplies.

Kyle Hay, P.E. – Weston & Sampson

Ryan C. Fleming, P.E. – Weston & Sampson

With ever increasing laboratory testing sensitivity and more stringent regulatory standards, the extent and impact of PFAS contamination is being realized. Public water utilities should have a response plan in place should PFAS be detected in a water supply, particularly for their most vulnerable and critical sources. Water utilities across the state have recently completed vulnerability assessments to identify potential PFAS generators within their watersheds and zones of influence. This information coupled with an action plan can be useful if potential future samples should indicate elevated levels of PFAS. This presentation will give a brief refresher on the characteristics of PFAS, potential sources of PFAS exposure, and short term and long term approaches to manage PFAS impacted water supplies. Case studies for a planned, managed PFAS treatment system as well as emergency construction for PFAS treatment will be presented.

3:15-4:00         PFAS Treatment Technology Selection – Comparison of Bench and Pilot-Scale Testing

James Collins, Principal Engineer, Tighe& Bond

Per- and polyfluoroalkyl substances (PFAS) are a group of man-made chemicals that are widely used in manufactured products. Aquarion Water Company of NH has detected PFAS in the majority of their groundwater production wells. To proactively evaluate potential treatment requirements, Aquarion conducted bench and pilot-scale testing to evaluate various treatment technologies and develop treatment costs. This presentation will review and compare the results of bench and pilot-scale testing of GAC and IX for long and short chain PFAS, discuss resulting treatment costs, and Aquarions current PFAS management strategy.

 

CEU: 6 TCU (pending approval from DPH)

         

 Thank You To Our Sponsors

 

 

 

 

 

Tickets

$190.00 Member WQ&T Symposium Registration

$240.00 Non-Member WQ&T Symposium Ticket

$350.00 Member WQ&T Symposium Sponsor

$350.00 Non-Member WQ&T Symposium Sponsor

$40.00 University Student Registration

$190.00 Utility Member

$0.00 Speaker or Monderator Ticket

Documents

Water Quality & Treatment Sympsium Agenda


CTAWWA • 90 Sargent Drive • New Haven, CT 06511
Telephone: (860) 604-8996 • Fax: (860) 953-3051 • Email: [email protected]