Journal of The New England Water Works Association - Spring 2015 - (Page 1)

NEW ENGLAND WATER WORKS ASSOCIATION ORGANIZED 1882 VOL. CXXIX March 2015 NO. 1 This Association, as a body, is not responsible for the statements or opinions of any individual. DAF Pilot Study for Algae and DBP Reduction By Thomas R. Marston,* Stephen K. Rupar, P.E.,** John J. Cordaro, P.E.,*** and Larry W. VandeVenter**** Presented April 2, 2014 ABSTRACT A pilot study of dissolved air flotation clarification (DAF) with mixed media filtration was conducted at the Norwich Public Utilities Stony Brook WTP for the removal of disinfection byproducts and algae in the late summer of 2013. A variety of coagulants and flow rates were studied. DAF showed outstanding algae removal in excess of 90 percent with all coagulants. DBP removal varied by coagulant with ferric chloride and high doses of alum achieving the best results. Introduction The Norwich Public Utilities' (NPU) Stony Brook Water Treatment Plant (WTP) is a 4.0 million gallon per day (mgd) plant built in 1996 consisting of two Infilco Degremont, Inc. (IDI) Advent package treatment units that are each rated for 2.0 mgd. The IDI Advent treatment units each consist of a nonbuoyant media upflow clarifier with a maximum loading rate of 10 gallons per minute per square foot (gpm/sf) and multi-media filters with a rated capacity of 5 gpm/sf. Chemicals used at the plant over the years include a cationic polymer, alum, aluminum chlorohydrate (ACH), caustic soda, polyphosphate, and chlorine. Mixing is provided by an inline static mixer. Both clarifiers at the Stony Brook WTP have experienced equipment failures over the years including plugging and channeling of the nonbuoyant media and uneven distribution of *Water Quality Specialist, Tata & Howard, 321 Research Parkway, Suite 204, Meriden, CT 06450, (203) 235-5760, tmarston@tataandhoward.com **Associate, Tata & Howard, Meriden, CT ***Project Manager, Tata & Howard, Meriden, CT ****Vice President, Kleinfelder, Cambridge, MA backwash air and water flows due to plugging. The non-buoyant media has been replaced in each treatment unit and additional work on the underdrains and air/water inlet nozzles has been performed. In 2010, the plant was shut down for several months as a result of a green algae bloom in the Stony Brook Reservoir that caused severe plugging of the clarifier media. At that time, the primary coagulant at the plant was alum. Jar tests and online trials with various coagulants showed that ACH performed relatively well in combination with a cationic polymer. NPU changed their treatment to ACH and the cationic polymer at dosages of approximately 5 to 6 milligrams per liter (mg/L) and 3.0 mg/L respectively in the spring of 2011 and returned the plant to service. The maximum flow through the plant was 2.5 mgd, subsequent to the change in coagulant. As a result of a pilot study performed at Stony Brook Reservoir in the early 1990s, buoyant clarifier media was selected as the preferred alternative. Subsequent pilot studies found that both buoyant and non-buoyant media were effective and both clarifier systems were allowed in bidding for construction of the plant. There are many package plants with buoyant media in New England and there are several cases across the country where clarifiers with non-buoyant media have been retrofitted to buoyant media. With the goal of improving treatment at the Stony Brook WTP and restoring capacity, NPU applied to the Connecticut Department of Public Health (DPH) for Drinking Water State Revolving Fund (SRF) funding for the replacement of the non-buoyant media clarifiers at the Stony Brook WTP with buoyant media in December of 2011. Based on this application, the project was deemed eligible for funding. In November 2012, NPU began the Journal NEWWA March 2015 1

Table of Contents for the Digital Edition of Journal of The New England Water Works Association - Spring 2015

Officers of the New England Water Works Association
NEWWA 2015 Meeting & Event Schedule
On the Cover
DAF Pilot Study for Algae and DBP Reduction
Impact of Epa Drinking Water Stage 2 Disinfectant and Disinfectant by-Product Rule
Thermal Expansion Causes False Fire Alarms
Preserving the Historical Beacon Hill Reservoir Granite Tablets
Water System Profile : Town of Kingston, Massachusetts
Proceedings: New England Water Works Association 2013-2014 Committee Reports
Obituary: Cheryl Lynn Maduskuie
In Memoriam: Richard G. Small
Reports From the Water Research Foundation
Guidelines for the Preparation of Papers for Publication in the Journal of the New England Water Works Association
Guidelines for the Peer Review Option of the Papers Appearing in the Journal of the New England Water Works Association
Entry Form: Newwa David M. Erickson Groundwater Award
Index to Advertisers

Journal of The New England Water Works Association - Spring 2015

Journal of The New England Water Works Association - Spring 2015 - (Page cover1)
Journal of The New England Water Works Association - Spring 2015 - (Page cover2)
Journal of The New England Water Works Association - Spring 2015 - (Page 1a)
Journal of The New England Water Works Association - Spring 2015 - (Page 2a)
Journal of The New England Water Works Association - Spring 2015 - Officers of the New England Water Works Association (Page 3a)
Journal of The New England Water Works Association - Spring 2015 - Officers of the New England Water Works Association (Page 4a)
Journal of The New England Water Works Association - Spring 2015 - Officers of the New England Water Works Association (Page 5a)
Journal of The New England Water Works Association - Spring 2015 - Officers of the New England Water Works Association (Page 6a)
Journal of The New England Water Works Association - Spring 2015 - NEWWA 2015 Meeting & Event Schedule (Page 7a)
Journal of The New England Water Works Association - Spring 2015 - NEWWA 2015 Meeting & Event Schedule (Page 8a)
Journal of The New England Water Works Association - Spring 2015 - On the Cover (Page 9a)
Journal of The New England Water Works Association - Spring 2015 - On the Cover (Page 10a)
Journal of The New England Water Works Association - Spring 2015 - On the Cover (Page 11a)
Journal of The New England Water Works Association - Spring 2015 - On the Cover (Page 12a)
Journal of The New England Water Works Association - Spring 2015 - On the Cover (Page 13a)
Journal of The New England Water Works Association - Spring 2015 - On the Cover (Page 14a)
Journal of The New England Water Works Association - Spring 2015 - On the Cover (Page 15a)
Journal of The New England Water Works Association - Spring 2015 - On the Cover (Page 16a)
Journal of The New England Water Works Association - Spring 2015 - Preserving the Historical Beacon Hill Reservoir Granite Tablets (Page 19)
Journal of The New England Water Works Association - Spring 2015 - Preserving the Historical Beacon Hill Reservoir Granite Tablets (Page 20)
Journal of The New England Water Works Association - Spring 2015 - Preserving the Historical Beacon Hill Reservoir Granite Tablets (Page 21)
Journal of The New England Water Works Association - Spring 2015 - Preserving the Historical Beacon Hill Reservoir Granite Tablets (Page 22)
Journal of The New England Water Works Association - Spring 2015 - DAF Pilot Study for Algae and DBP Reduction (Page 1)
Journal of The New England Water Works Association - Spring 2015 - DAF Pilot Study for Algae and DBP Reduction (Page 2)
Journal of The New England Water Works Association - Spring 2015 - DAF Pilot Study for Algae and DBP Reduction (Page 3)
Journal of The New England Water Works Association - Spring 2015 - DAF Pilot Study for Algae and DBP Reduction (Page 4)
Journal of The New England Water Works Association - Spring 2015 - DAF Pilot Study for Algae and DBP Reduction (Page 5)
Journal of The New England Water Works Association - Spring 2015 - DAF Pilot Study for Algae and DBP Reduction (Page 6)
Journal of The New England Water Works Association - Spring 2015 - DAF Pilot Study for Algae and DBP Reduction (Page 7)
Journal of The New England Water Works Association - Spring 2015 - DAF Pilot Study for Algae and DBP Reduction (Page 8)
Journal of The New England Water Works Association - Spring 2015 - DAF Pilot Study for Algae and DBP Reduction (Page 9)
Journal of The New England Water Works Association - Spring 2015 - DAF Pilot Study for Algae and DBP Reduction (Page 10)
Journal of The New England Water Works Association - Spring 2015 - DAF Pilot Study for Algae and DBP Reduction (Page 11)
Journal of The New England Water Works Association - Spring 2015 - Impact of Epa Drinking Water Stage 2 Disinfectant and Disinfectant by-Product Rule (Page 12)
Journal of The New England Water Works Association - Spring 2015 - Impact of Epa Drinking Water Stage 2 Disinfectant and Disinfectant by-Product Rule (Page 13)
Journal of The New England Water Works Association - Spring 2015 - Impact of Epa Drinking Water Stage 2 Disinfectant and Disinfectant by-Product Rule (Page 14)
Journal of The New England Water Works Association - Spring 2015 - Impact of Epa Drinking Water Stage 2 Disinfectant and Disinfectant by-Product Rule (Page 15)
Journal of The New England Water Works Association - Spring 2015 - Impact of Epa Drinking Water Stage 2 Disinfectant and Disinfectant by-Product Rule (Page 16)
Journal of The New England Water Works Association - Spring 2015 - Thermal Expansion Causes False Fire Alarms (Page 17)
Journal of The New England Water Works Association - Spring 2015 - Thermal Expansion Causes False Fire Alarms (Page 18)
Journal of The New England Water Works Association - Spring 2015 - Preserving the Historical Beacon Hill Reservoir Granite Tablets (Page 19)
Journal of The New England Water Works Association - Spring 2015 - Preserving the Historical Beacon Hill Reservoir Granite Tablets (Page 20)
Journal of The New England Water Works Association - Spring 2015 - Preserving the Historical Beacon Hill Reservoir Granite Tablets (Page 21)
Journal of The New England Water Works Association - Spring 2015 - Preserving the Historical Beacon Hill Reservoir Granite Tablets (Page 22)
Journal of The New England Water Works Association - Spring 2015 - Preserving the Historical Beacon Hill Reservoir Granite Tablets (Page 23)
Journal of The New England Water Works Association - Spring 2015 - Preserving the Historical Beacon Hill Reservoir Granite Tablets (Page 24)
Journal of The New England Water Works Association - Spring 2015 - Preserving the Historical Beacon Hill Reservoir Granite Tablets (Page 25)
Journal of The New England Water Works Association - Spring 2015 - Preserving the Historical Beacon Hill Reservoir Granite Tablets (Page 26)
Journal of The New England Water Works Association - Spring 2015 - Preserving the Historical Beacon Hill Reservoir Granite Tablets (Page 27)
Journal of The New England Water Works Association - Spring 2015 - Water System Profile : Town of Kingston, Massachusetts (Page 28)
Journal of The New England Water Works Association - Spring 2015 - Water System Profile : Town of Kingston, Massachusetts (Page 29)
Journal of The New England Water Works Association - Spring 2015 - Water System Profile : Town of Kingston, Massachusetts (Page 30)
Journal of The New England Water Works Association - Spring 2015 - Water System Profile : Town of Kingston, Massachusetts (Page 31)
Journal of The New England Water Works Association - Spring 2015 - Water System Profile : Town of Kingston, Massachusetts (Page 32)
Journal of The New England Water Works Association - Spring 2015 - Water System Profile : Town of Kingston, Massachusetts (Page 33)
Journal of The New England Water Works Association - Spring 2015 - Proceedings: New England Water Works Association 2013-2014 Committee Reports (Page 34)
Journal of The New England Water Works Association - Spring 2015 - Proceedings: New England Water Works Association 2013-2014 Committee Reports (Page 35)
Journal of The New England Water Works Association - Spring 2015 - Proceedings: New England Water Works Association 2013-2014 Committee Reports (Page 36)
Journal of The New England Water Works Association - Spring 2015 - Proceedings: New England Water Works Association 2013-2014 Committee Reports (Page 37)
Journal of The New England Water Works Association - Spring 2015 - Proceedings: New England Water Works Association 2013-2014 Committee Reports (Page 38)
Journal of The New England Water Works Association - Spring 2015 - Proceedings: New England Water Works Association 2013-2014 Committee Reports (Page 39)
Journal of The New England Water Works Association - Spring 2015 - Proceedings: New England Water Works Association 2013-2014 Committee Reports (Page 40)
Journal of The New England Water Works Association - Spring 2015 - Proceedings: New England Water Works Association 2013-2014 Committee Reports (Page 41)
Journal of The New England Water Works Association - Spring 2015 - Proceedings: New England Water Works Association 2013-2014 Committee Reports (Page 42)
Journal of The New England Water Works Association - Spring 2015 - Proceedings: New England Water Works Association 2013-2014 Committee Reports (Page 43)
Journal of The New England Water Works Association - Spring 2015 - Proceedings: New England Water Works Association 2013-2014 Committee Reports (Page 44)
Journal of The New England Water Works Association - Spring 2015 - Proceedings: New England Water Works Association 2013-2014 Committee Reports (Page 45)
Journal of The New England Water Works Association - Spring 2015 - Proceedings: New England Water Works Association 2013-2014 Committee Reports (Page 46)
Journal of The New England Water Works Association - Spring 2015 - Proceedings: New England Water Works Association 2013-2014 Committee Reports (Page 47)
Journal of The New England Water Works Association - Spring 2015 - Proceedings: New England Water Works Association 2013-2014 Committee Reports (Page 48)
Journal of The New England Water Works Association - Spring 2015 - Proceedings: New England Water Works Association 2013-2014 Committee Reports (Page 49)
Journal of The New England Water Works Association - Spring 2015 - Proceedings: New England Water Works Association 2013-2014 Committee Reports (Page 50)
Journal of The New England Water Works Association - Spring 2015 - Proceedings: New England Water Works Association 2013-2014 Committee Reports (Page 51)
Journal of The New England Water Works Association - Spring 2015 - Proceedings: New England Water Works Association 2013-2014 Committee Reports (Page 52)
Journal of The New England Water Works Association - Spring 2015 - Proceedings: New England Water Works Association 2013-2014 Committee Reports (Page 53)
Journal of The New England Water Works Association - Spring 2015 - Proceedings: New England Water Works Association 2013-2014 Committee Reports (Page 54)
Journal of The New England Water Works Association - Spring 2015 - Proceedings: New England Water Works Association 2013-2014 Committee Reports (Page 55)
Journal of The New England Water Works Association - Spring 2015 - Proceedings: New England Water Works Association 2013-2014 Committee Reports (Page 56)
Journal of The New England Water Works Association - Spring 2015 - Proceedings: New England Water Works Association 2013-2014 Committee Reports (Page 57)
Journal of The New England Water Works Association - Spring 2015 - Proceedings: New England Water Works Association 2013-2014 Committee Reports (Page 58)
Journal of The New England Water Works Association - Spring 2015 - Proceedings: New England Water Works Association 2013-2014 Committee Reports (Page 59)
Journal of The New England Water Works Association - Spring 2015 - Proceedings: New England Water Works Association 2013-2014 Committee Reports (Page 60)
Journal of The New England Water Works Association - Spring 2015 - Proceedings: New England Water Works Association 2013-2014 Committee Reports (Page 61)
Journal of The New England Water Works Association - Spring 2015 - Obituary: Cheryl Lynn Maduskuie (Page 62)
Journal of The New England Water Works Association - Spring 2015 - In Memoriam: Richard G. Small (Page 63)
Journal of The New England Water Works Association - Spring 2015 - Reports From the Water Research Foundation (Page 64)
Journal of The New England Water Works Association - Spring 2015 - Reports From the Water Research Foundation (Page 65)
Journal of The New England Water Works Association - Spring 2015 - Reports From the Water Research Foundation (Page 66)
Journal of The New England Water Works Association - Spring 2015 - Reports From the Water Research Foundation (Page 67)
Journal of The New England Water Works Association - Spring 2015 - Reports From the Water Research Foundation (Page 68)
Journal of The New England Water Works Association - Spring 2015 - Reports From the Water Research Foundation (Page 69)
Journal of The New England Water Works Association - Spring 2015 - Guidelines for the Preparation of Papers for Publication in the Journal of the New England Water Works Association (Page 70)
Journal of The New England Water Works Association - Spring 2015 - Guidelines for the Peer Review Option of the Papers Appearing in the Journal of the New England Water Works Association (Page 71)
Journal of The New England Water Works Association - Spring 2015 - Entry Form: Newwa David M. Erickson Groundwater Award (Page 72)
Journal of The New England Water Works Association - Spring 2015 - Index to Advertisers (Page 17a)
Journal of The New England Water Works Association - Spring 2015 - Index to Advertisers (Page 18a)
Journal of The New England Water Works Association - Spring 2015 - Index to Advertisers (Page 19a)
Journal of The New England Water Works Association - Spring 2015 - Index to Advertisers (Page 20a)
Journal of The New England Water Works Association - Spring 2015 - Index to Advertisers (Page 21a)
Journal of The New England Water Works Association - Spring 2015 - Index to Advertisers (Page 22a)
Journal of The New England Water Works Association - Spring 2015 - Index to Advertisers (Page 23a)
Journal of The New England Water Works Association - Spring 2015 - Index to Advertisers (Page 24a)
Journal of The New England Water Works Association - Spring 2015 - Index to Advertisers (Page cover3)
Journal of The New England Water Works Association - Spring 2015 - Index to Advertisers (Page cover4)
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