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

Optimizing Secondary Clarifier Operation with CFD Modeling

Thursday, April 19
11:35 AM - 12:00 PM
Location: Meeting Room 313, Sacramento Convention Center

SWRCB Wastewater: .05 CEU

CWEA: .5 Contact Hours

Practice Area: Professional Challenge Area: Plant Operations – Challenges and Opportunities

Operating wastewater treatment processes below or above their optimal capacity will result in years of unnecessary maintenance costs. The optimal design point of a particular process changes over the years as the characteristics of the influent wastewater change due to influent flow increases or decreases, and varying ratios of residential, commercial, and industrial service areas. Periodically updating clarifier control parameters will help a utility determine the optimal balance between meeting permit requirements and treatment costs.

Learner Outcomes:

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

Mario A. Guadamuz

Associate Engineer


Mario Guadamuz is a registered California P.E working as an Associate Engineer for the Sacramento Regional Sanitation District (Regional San). Mario has been working in the field of civil engineering for over fifteen years emphasizing on water/wastewater facilities in both the private and public sectors. Mario holds a Bachelors and Masters degree in Civil Engineering from the University of Nevada Reno. His current role within Regional San includes assisting in developing strategies for optimizing processes and disseminating information among stakeholders necessary in the integration of new processes being incorporated thru the EchoWater Project such as the new Biological Nutrient Removal facility.


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Cori Burnett

Grade V Water Resource Recovery Facility Operator
City of San Luis Obispo


Hi I am Cori Burnett - I am a Grade V Wastewater Treatment Plant Operator at the City of San Luis Obispo and have an Environmental Engineering degree from Cal Poly San Luis Obispo. I am excited to help bridge the gap between operations and engineering to help optimize facilities to protect the valuable resource of one water.


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Seppi Henneman

Brown and Caldwell


Seppi Henneman got his BS and MS in Civil and Environmental Engineering from Cal Poly San Luis Obispo. He has worked at Brown and Caldwell for 6 years as a wastewater process engineer. He has performed stress testing to help identify capacity of various processes throughout the wastewater treatment process including primary clarifiers, aeration basins, secondary clarifiers, and tertiary filters. This is the fourth and largest primary clarifier stress test that he has been involved with.


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Optimizing Secondary Clarifier Operation with CFD Modeling

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