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Register Today for the 6th Annual Water Quality & Treatment Symposium

 

 

Water Quality & Treatment Symposium

Norwich Inn & Spa – November 29, 2018

Agenda

8:00 – 8:30      Registration

8:30 – 9:15      Current Water Quality Challenges

Carissa Madonna, Sanitary Engineer 3, Department of Public Health, Drinking Water Section

Pat Bisacky, Environmental Analyst 3, Department of Public Health Drinking Water Section Source Assessment and Protection Unit.

Abstract:

This presentation will focus on the current drinking water quality challenges facing water utilities here in Connecticut. Topics such as regulated contaminants, disinfection by-products (DBP’s), lead, harmful algal blooms, and non-regulated (emerging) contaminants such as PFAS and chloride will all be discussed.

9:15 – 10:00    PFAS Compounds from Airborne Distribution

Blake Martin, Vice President, Weston and Sampson

Abstract:

While State and Federal regulators wrestle with setting standards and guidelines for per- and poly-fluorinated compounds, forensic groundwater studies and ever-changing treatment technologies impact our approach to these water quality threats.   This presentation focuses on the results from investigations in New Hampshire, Rhode Island and Vermont.  Treatment strategies, public reporting issues, and long-term threat reduction techniques are illuminated in three case studies.  In addition, drinking water treatment efforts from 21 sites across North America will be discussed including various GAC methods, resin filter media and combination systems.

10:00-10:20    BREAK

10:20-11:05    Catawba-Wateree Takes the Next Step in Water Loss Control

Drew Blackwell, NRW Program Manager – Cavanaugh

Abstract:

Water supply challenges and the need for robust conservation planning are driven by increasing customer demands, declining supplies, and aging utility infrastructure.  Water Loss Control is an important part of water resource management for water utilities.  States are taking note of the importance of Water Loss Program as well with 12 across the country to date and even more on the horizon.  This presentation will provide an overview of these programs and highlight a unique program currently underway in North Carolina.

The Catawba-Wateree Water Management Group (CWWMG) has embarked on a Water Loss program to develop meaningful basin-wide targets for water loss.  The CWWMG conducted a training workshop for its members to introduce the basic concepts of the AWWA M36 Methodology of Water Loss Control Management.  This workshop introduced the backbone of the methodology, the Water Balance and provided guidance for moving away from the outdated terminology of Unaccounted for Water and outdated practice of using water loss as a percentage of total water supplied as a performance indicator. 

CWWMG members took the next step in understanding and addressing basin challenges and water loss with a refresher workshop.  Afterwards, participating utilities completed a Level I Validation of their Water Audits, which were then consolidated to develop the current baseline for the entire basin.  Metrics were reviewed with specific statistical confidence limits to establish a high and low band for the data.

In order to maintain consistent tracking and progress toward the goals of the Basin-Wide Water Loss Program (BWLP), annual auditing will be required of all members and basin-wide progress will be reviewed and reported to the larger group on a routine, systematic basis.

This presentation will provide an overview and discuss the multi-phase Catawba-Wateree BWLP, including the results of the first round of validated water audits, the establishment of meaningful basin-wide targets for water loss, and development of water loss programs for each member.

11:05-11:50    Addressing Residuals Capacity Deficits through Optimization

Adam Kran, Senior Project Engineer, Environmental Partners

Abstract:

The Abington/Rockland Joint Water Works (ARJWW) operates three water treatment facilities, which have had operational and maintenance challenges associated with residuals management. A comprehensive study was conducted to identify cost-effective upgrades to address each plant’s specific challenges, and to develop a new system-wide management strategy. This presentation will present an overview of the study approach, results, and the proposed solutions.

11:50-1:00      LUNCH

1:00-1:40        Gypsy Moth Caterpillar Defoliation: Is Detritus Productive?

 Dr. Robert Kortmann, Ph.D., Ecosystem Consulting Service, Inc.

Abstract:

Connecticut has experienced very variable seasonal weather patterns, a severe two-year drought, and areas of severe defoliation by Gypsy Moth caterpillars in recent years.  This presentation will review the water quality effects of climate variability, drought, and defoliation observed at source water reservoir systems over the past decade.  Observed changes include increases in source water levels of Total Organic Carbon (TOC), iron, and manganese.  Watershed defoliation can adversely affect source water quality and cause water treatment challenges including increased DBP precursors, coagulant dosing, shifts in pH, and nutrient loading which can stimulate algae and cyanobacteria.

1:40-2:20        Role of Manganese Oxide in the Formation of Disinfection Byproducts in Drinking Water Treatment

Arianne A. Bazilio, Assistant Professor, Ph.D., Trinity College

Abstract:

This presentation will provide an overview and discussion of recent water treatment research which examined the role of manganese oxide (MnOx) and MnOx-coated surfaces, used for Mn removal by sorption and catalytic oxidation by free chlorine, in the formation of regulated disinfection byproducts (DBPs). Bench, laboratory column-scale, and full-scale studies were performed. Findings suggest that MnOx does not increase DBP formation under general treatment conditions.

2:20-2:40        BREAK

2:40-3:20        Biological Filtration of Fe and Mn at the Part Street Well Field Water Treatment Facility, Putnam, CT

Erik Grotton, P.E., Blueleaf Incorporated

Louis Soracco, P.E. Tighe & Bond

Abstract:

This presentation will focus on the biological filtration system recently installed in Putnam, CT at the Park Street Well Field, which has a design capacity of 1,230 gpm.  A pilot study was conducted on the worst water quality and compared the performance of Greensand Plus filter media with the Ferazur & Mangazur biological filtration system for the removal of Fe and Mn in groundwater.  Based on the results of the pilot, the biological filtration system technology was selected.  The full-scale design approach will be reviewed, which was based on the results of the piloting effort.  A review of the treatment technology theory will also be discussed.  In addition, the start-up process and treatment performance to data to date will be covered.  The treatment facility came online in August of 2018.

3:20-4:00         DAF Design with Due Diligence

Jihyon Im, Environmental Engineer, CDM Smith

Alan LeBlanc, P.E., BCEE, CDM Smith

Abstract:

Dissolved air flotation (DAF) will be added upstream of the existing filtration system at the Norwich Public Utilities’ Stony Brook Water Treatment Plant (WTP) in Montville, CT for improved clarification and removal of organics and algae. The design process was conducted systematically to identify and evaluate the impacts of DAF on the WTP’s current operation and performance. This presentation will use the Stony Brook WTP as an example of how design considerations should be reviewed when retrofitting an existing treatment facility.

 


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