ENR Upgrades Steve Woodard, Ph.D., P.E. Outline Intro to CWT - - PowerPoint PPT Presentation

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Mar 13, 2023 28 likes •250 views

BioMag: New Technology for Cost Effective ENR Upgrades Steve Woodard, Ph.D., P.E. Outline Intro to CWT Secondary clarification: the weak link BioMag: ballasted biological treatment How does it work? Applications ENR

SLIDE 1

BioMag: New Technology for Cost Effective ENR Upgrades Steve Woodard, Ph.D., P.E.

SLIDE 2

Outline

Intro to CWT
Secondary clarification: the weak link
BioMag: ballasted biological treatment
How does it work?
Applications
ENR Technology
Winebrenner BioMag trial in Cascade, MD
ENR without the denit filters
Significant potential cost savings in Maryland

SLIDE 3

The Challenges of Biological Treatment

Secondary clarification is the bottleneck of

activated sludge treatment

Filamentous bulking
Storm flow issues (I&I)
Pin floc
Limits MLSS concentration
Limits nutrient removal

capacity

Compromises effluent quality
Requires expensive

solutions to correct

SLIDE 4

Magnetite: the Enabler

Magnetite is Fe3O4,
Doesn’t rust or degrade
Completely inert
Two critical properties:
It’s dense;

specific gravity: 5.2

Magnetically controllable

SLIDE 5

The Benefits of Ballasted Biological Floc

Ballasted floc ensures

rapid, reliable settling

Facilitates increased MLSS

concentrations

Maintains control over

sludge blankets (I&I)

Frees up tankage for

nutrient removal (e.g. anoxic zones)

Provides clean effluent –

low TSS

Facilitates low effluent TN!

SLIDE 6

BioMag: Enhanced Biological Treatment

SLIDE 7

4-Stage Bardenpho Process Flow

SLIDE 8

BioMag Pilot Trailer

SLIDE 9

Magnetite Feeder

SLIDE 10

Shear Mill

SLIDE 11

Recovery Drum

SLIDE 12

Rapid Clarification Increases Capacity

SLIDE 13

Magnets Are Used to Recover Magnetite

Video clip

SLIDE 14

Winebrenner Plant Layout

SLIDE 15

0.0 10.0 20.0 30.0 40.0 50.0 60.0 1/22/2010 2/11/2010 3/3/2010 3/23/2010 4/12/2010 5/2/2010 5/22/2010 6/11/2010

Nitrogen, mg/l Date

BioMag Influent and Effluent Nitrogen

Influent TKN

Effluent NH4 + NO2 + NO3

SLIDE 16

0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 1/22/2010 2/11/2010 3/3/2010 3/23/2010 4/12/2010 5/2/2010 5/22/2010 6/11/2010

Nitrogen, lbs/day Date

BioMag Influent and Effluent N, lbs/day

Influent TKN

Effluent NH4 + NO2 + NO3

SLIDE 17

1 2 3 4 5 6 7 8 9 10 2/21/2010 3/3/2010 3/13/2010 3/23/2010 4/2/2010 4/12/2010 4/22/2010 5/2/2010 5/12/2010 5/22/2010 6/1/2010

Effluent N, mg/l Date

BioMag Effluent TN and NH4 + NO2 + NO3

Total Nitrogen NH4 + NO2 + NO3

SLIDE 18

2000 4000 6000 8000 10000 12000 14000 16000 2/1/2010 2/21/2010 3/13/2010 4/2/2010 4/22/2010 5/12/2010 6/1/2010

MLSS, mg/l Date

BioMag MLSS (not including magnetite)

SLIDE 19

0.0 5.0 10.0 15.0 20.0 25.0 30.0 2/1/2010 2/21/2010 3/13/2010 4/2/2010 4/22/2010 5/12/2010 6/1/2010

Effluent TSS, mg/l Date

BioMag Effluent TSS

SLIDE 20

0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 2/14/2010 2/24/2010 3/6/2010 3/16/2010 3/26/2010 4/5/2010 4/15/2010 4/25/2010 5/5/2010 5/15/2010 5/25/2010

Effluent TP, mg/l Date

BioMag Effluent Total P

SLIDE 21

BioMag Wet Weather Flow Performance

SLIDE 22

ENR Without the Filters

Excellent, reliable TN removal
Same for TP
Low effluent TSS (< 5 mg/l)
High MLSS and low, stable sludge blanket
Frees up tankage for anoxic zones
Often eliminates need for new process tankage and/or IFAS
Also eliminates need for filters
Mitigates impacts of I&I
Scales up very well