Retrofit for treatment of EDCs in the Easton wastewater treatment plant
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Retrofit for treatment of EDCs in the Easton wastewater treatment plant. Presented by: Eric Backlund, Dan Kucz, Dan Weaver a.k.a. WeriK, Inc. for CE372. Objectives. Gain an understanding of EDCs in our environment Analyze possible methods of treatment for EDCs

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Retrofit for treatment of EDCs in the Easton wastewater treatment plant

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Retrofit for treatment of edcs in the easton wastewater treatment plant

Retrofit for treatment of EDCs in the Easton wastewater treatment plant

Presented by:

Eric Backlund, Dan Kucz, Dan Weaver

a.k.a. WeriK, Inc.

for CE372


Objectives

Objectives

  • Gain an understanding of EDCs in our environment

  • Analyze possible methods of treatment for EDCs

  • Choose an applicable retrofit for Easton wastewater treatment plant based on the multidisciplinary approach with Lehigh Carbon Community College (LCCC) and DeSales University

  • Provide costs of implementation for the retrofit


Endocrine disrupting chemicals edcs

Endocrine Disrupting Chemicals (EDCs)

  • Over 87,000 kinds found in the environment (Scruggs, 2004)

  • Proven harmful to wildlife – proven harmful to humans in high concentrations

  • Should be treated in wastewater from a societal standpoint, according to LCCC students

  • Should be limited to 0.1 parts per trillion (ppt) from a biological standpoint, according to DeSales University students


Methods for treatment

Methods for Treatment

  • Ion exchange/Chemical Precipitation

  • Chlorination

  • Ultraviolet

  • Ozonation

  • Osmosis/Membrane (filter)

  • Activated Carbon adsorption

    • Why?

      • Effective at removing wide range of EDCs

      • Applicable to full-scale implementation


Environmental aspect

Environmental Aspect

  • Received a wastewater sample from Easton Wastewater Treatment Plant

  • Spiked the water with Estradiol, E2 to heighten the estrogen concentration

  • Tested different amounts of carbon

    • Filtrasorb 600

    • Carbsorb 40

  • Data analysis was done to get values for calculating the cost of the carbon


Environmental aspect cont d

Environmental Aspect Cont’d…

  • Cost calculations were run for the four carbons provided to us

  • GAC Costs

    • Carbon 1 -- $8.46 per day

    • Carbon 2 -- $9.20 per day

    • Filtrasorb 600 -- $139,841.14 per day

    • Carbsorb 40 -- $45,486.95 per day

  • PAC Costs

    • Carbon 1 -- $992.61 per day

    • Carbon 2 -- $60.22 per day

    • Filtrasorb 600 -- $202,427,912.29 per day

    • Carbsorb 40 -- $221,294,385.80 per day


Site description

Site Description

Easton Wastewater Treatment Plant

  • Located on Route 611 between I-78 and the Delaware River

  • Serves ~56,000 people (Water Partnership Council, 2001)

  • ~4-5MGD operational flow rate


Design criteria

Design Criteria

  • 10MGD max flow rate

  • 10 year lifespan

  • Activated Carbon adsorption treatment process

    • Granular activated carbon (GAC)

      • Columns

      • Regeneration of carbon

    • Powder activated carbon (PAC)

      • Mix into water

      • Increased sludge removal in secondary clarifiers

  • 2 part GAC/PAC system


Recommendations for design

Recommendations for design

  • Design GAC treatment for 6.5MGD based on population increases over the past 50 years in the Allentown-Bethlehem-Easton area (CensusScope, 2000)

  • For remaining 3.5MGD, implement a PAC mixer box…PAC can be used in emergency situations and during regeneration periods

  • 5 GAC columns at 15.5’ width each, in parallel flow

  • PAC mixer box installed at current flow division box


Locations for implementation

Locations for implementation

GAC

  • Near chlorination tanks

PAC

  • Near flow division box

PAC

GAC


Costs of retrofit to users

Costs of retrofit to users

PAC

GAC

TOTAL COST TO USERS: $4.17 per person/yr


Any questions

Any Questions???


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