Journal of The New England Water Works Association - Spring 2015 - (Page 9)

Table No. 7 Water Quality - 3 mg/L ACH, 10 gpm/sf DAF LR Sample Point TOC mg/L DOC mg/L SUVA L/mg-m Raw Water 3.7 3.3 3.0 Plant Filter Effluent 2.2 2.2 - SDS TTHM ug/L 77.4 Pilot Filter Effluent 2.0 1.9 1.2 71.2 Pilot/Plant % Reduction 9.1 13.6 - 8.0 Algae samples showed 98.9 percent removal of cells through the DAF process. Samples collected at the same time from the Stony Brook WTP clarifier effluent showed 33.7 percent removal of cells. A sample from the ACH run showed a solids concentration of sludge from the DAF of 4.2 percent, the highest level measured for any coagulant. The volume of wet sludge produced by the process was predicted to be 27 cf for every million gallons of water treated. Ferric Chloride Treatment Runs Ferric chloride at a dosage of 20 mg/L was started in the DAF pilot plant at 10 gpm/sf. Initial effluent turbidity from the DAF was above 0.3 NTU. A change in the mixing speeds of the flocculators to add more energy was made that improved flocculation and lowered effluent turbidity to below 0.3 NTU. The rate of filter headloss also decreased. The filter reached terminal headloss at 50 hours but likely would have run longer had the mixing speed adjustment been made at the start of the run. Ferric chloride required about 50 percent more caustic soda to reach flocculation pH when compared to the same dose of alum. Samples results are shown in Table No. 8. The pilot run was repeated at a 12 gpm/sf DAF loading rate and 5 gpm/sf filtration rate, again using 20 mg/L of ferric chloride as coagulant. DAF effluent turbidity (0.24 NTU) showed very good results. The pilot filter reached terminal headloss after 44 hours run time. Sample results are shown in Table No. 9. Ferric chloride produced the best removal rates for TOC, TTHM and THAA with an average removal of 25 percent better than the existing Stony Brook WTP at design flow. These results are consistent with the results seen in the jar tests. However, a manganese sample collected from the filtered water during the 12 gpm/sf run showed a level of 0.027 mg/L. Manganese is a frequent low level contaminant found in ferric chloride. While the level seen in the filtered water is less than the secondary MCL for manganese of 0.05 mg/L, consistent manganese levels above 0.01 mg/L in water entering the distribution system can cause customer complaints of black specks in the water following system disruptions. No samples were collected for algae during the ferric chloride runs. However, pilot experience from other locations demonstrates that similar results for algae removal can be expected from the DAF using ferric chloride as the other coagulants. Sludge samples collected during the ferric chloride runs had a solids content of 3.1 percent and 3.4 percent at 10 gpm/sf and 12 gpm/ sf, respectively. The total volume of wet sludge predicted to be produced per million gallons of water treated at a ferric chloride dosage rate of 20 mg/L is approximately 66 cf. Alum or Ferric Chloride? The DAF pilot study showed that DAF is effective for treating water from the Stony Brook Table No. 8 Water Quality - 20 mg/L Ferric Chloride, 10 gpm/sf DAF LR Sample Point TOC mg/L DOC mg/L SUVA L/mg-m SDS TTHM ug/L Raw Water 3.8 3.6 2.6 Plant Filter Effluent 2.2 2.1 0.81 82.2 Pilot Filter Effluent 1.5 1.6 0.69 65.9 Pilot/Plant % Reduction 31.8 23.8 14.8 19.8 Journal NEWWA March 2015 9

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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