Working with What You Have: Optimizing Secondary Treatment Performance in Existing Plants

Using Primary Sludge as a Supplemental Carbon Source

Thursday, April 19
4:00 PM - 4:50 PM
Location: Meeting Room 313, Sacramento Convention Center

SWRCB Wastewater: 0.1 CEU

CWEA: 1 Contact Hour

Practice Area: Team Challenge Area: Nutrient Management and Removal

Biological nutrient removal facilities often utilize methanol or other chemicals as a supplemental carbon source for denitrification. This session will illustrate the pitfalls of relying on steady-state modeling for designing biological nutrient removal facilities while highlighting how dynamic modeling was used to identify a cost-effective, chemical-free supplemental carbon source.

Learner Outcomes:

Level: Intermediate; working knowledge of subject matter / journeyman level staff

Andrea White

Civil Engineer
CDM Smith


Andrea has 13 years of wastewater treatment plant design experience and is registered as a Professional Civil Engineer in California. She has a broad-based knowledge of wastewater treatment process with emphases on biological process modeling, biological nutrient removal, efficient aeration system design and the evaluation of emerging aeration technologies.


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Leonel I. Almanzar

Associate, Senior Project Manager
CDM Smith


Dr. Almanzar has 20 years of experience in civil, environmental, and transportation projects design and management. He has managed and coordinated the preparation of feasibility studies, planning, conceptual, preliminary, and final designs for water/wastewater treatment facilities, dams, tunneling, and transportation structures. Dr. Almanzar also has extensive experience in value engineering, design-build projects, project legal litigations, project scheduling and cost management functions.


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Matt Kallerud

Carollo Engineers


Matt Kallerud has 5 years of experience in water and wastewater treatment planning, design, construction & startup. He holds a M.S. in Civil & Environmental Engineering from the University of California, Davis and a B.S. in Mechanical Engineering from Milwaukee School of Engineering. His areas of interest include wastewater process modeling, aeration system design, biological nutrient removal, and treatment process startup. He is actively involved with CWEA San Francisco Bay Section's Student and Young Professionals Committee as well as with Carollo's annual workplace giving campaign.


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Using Primary Sludge as a Supplemental Carbon Source

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