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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 Presented by: Eric Backlund, Dan Kucz, Dan Weaver a.k.a. WeriK, Inc. for CE372 – PowerPoint PPT presentation

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Title: Retrofit for treatment of EDCs in the Easton wastewater treatment plant


1
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
2
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

3
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

4
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

5
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

6
Environmental Aspect Contd
  • 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

7
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

8
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

9
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
    boxPAC 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

10
Locations for implementation
  • PAC
  • Near flow division box
  • GAC
  • Near chlorination tanks

PAC
GAC
11
Costs of retrofit to users
PAC
GAC
TOTAL COST TO USERS 4.17 per person/yr
12
Any Questions???
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