Professional Bio for C. Robert L. Mangrum, PE., BCEE

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Education 

• Master of Science, Environmental Engineering, Virginia Polytechnic Institute and State University, 1998

• Bachelor of Science, Civil Engineering Emphasis: Water and Wastewater Treatment, Clemson University, 1994

 

Professional Registration

• Professional Engineer: Virginia, 2000, Florida, 2000

 

Specialty Certification

• Board Certified Environmental Engineer (BCEE), in Water Supply and Wastewater Treatment by the American Academy of Environmental Engineers.Certification attained in 2003.

 

Recent Papers, Presentations and etc:

Governor's 2020 Gold Award for Environmental Excellence

Enhanced Biosolids Reuse & Reduction Project; Harrisonburg-Rockingham Regional Sewer Authority - Technical advisor to project and codigestion specialist.

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WEF 2020 Biosolids Conference

Paper: The effect of divalent cation complexation on anaerobically digested EBPR sludge dewatering performance.

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​Water Environment Research Journal

Mangrum, C.R.L., Jenkins, D. (2020) The effect of divalent cation complexation on anaerobically digested EBPR sludge dewatering performance. Water Environ. Res. 92, 677. https://doi.org/10.1002/wer.1259

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2018 EPA PISCES AWARD

Recognition Awarded to the HRRSA Enhanced Biogas Reuse & Recovery Project for Performance and Innovation in the State Revolving Loan Fund Creating Environmental Success. Technical Advisor to project; Author of Facility Solids-Stream Master Plan.

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WEF 2018 Biosolids Conference Phoenix, AZ 

Paper Presentation: Leveraging Codigestion for Municipal Biosolids Drying: Sustainable Goals - Proven Technology". (2018) Proc., Water Environ. Fed. Residuals and Biosolids Conf.

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Relevant Project Experience:

Mangrum Consulting & Design (December 2015 – Current), Lynchburg Va

Established in 2015, Mangrum Consulting & Design was formed to provide specialty consulting engineering services to municipal wastewater clients based upon a unique blend of Rob's consulting experience that utilizes process-based analytical evaluations and collaborative problem-solving to produce customized holistic solutions.  Dr. David Jenkins has provided technical guidance and mentoring to Rob since 2009.

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Wastewater - Key Experiences:

• Developed operating protocols and provide on-going process support to optimize performance for a broad range of municipal 5-stage ENR facilities to robustly and cost effectively achieve Chesapeake Bay nutrient limits with capacities of: 23, 6.0, 4.6, 2.9, 0.9, 0.8, 0.7, & 0.2 MGD.

• Conducted a liquid and solids-stream evaluation that culminated in up-rating liquid -stream capacity to 23 MGD and solids-stream capacity to 28 MGD.

• Evaluated a high-rate anaerobic digestion process and developed operating protocols for codigesting high-strength industrial wastes at a municipal WWTP.

• Biogas driven sludge dryer system – Owner’s technical agent.

• Conducted a study to predict the formation of inorganic crystalline products within anaerobic digestion systems and implemented methods to minimize formation.

• Pretreatment support and local limits development for multiple ENR treatment facilities.

 

Water - Key Experiences

• Conversion of a 1.0 MGD conventional river water treatment facility to a 1.8 MGD membrane filtration plant – Owners Technical Agent.

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Wiley|Wilson (July 2005 – Dec 2015), Lynchburg Va

Vice President, Water Resources/Civil Engineering  (Jan 2009 – Dec 2015)

Lynchburg Office Group Leader for Civil/Water Resources with 20 direct reports; Overall responsibility for business development, technical direction, project performance, project execution, mentoring, and employee development. Created a company wide young professional mentoring program for Alexandria, Richmond, Lynchburg and Atlanta offices.

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CH2M (May 2000 - July 2005) – Project Manager (South Florida)

Project Manager and lead water/wastewater engineer for advanced water and wastewater treatment projects across Florida and Georgia. 

 Key Experiences:

• Lead wastewater process engineer responsible for resolving a ten-year standoff to re-rate the George T. Lohmeyer WWTP from 42 to 56 MGD (City of Fort Lauderdale).

• Project Manager for developing a CMOM for the City of Fort Lauderdale which reduced peak-flows at the WWTP by 25 MGD.

• Designated as the Wastewater Market Segment Leader for Florida (Business Development and Technical).

• Selected as the Project Manager for the high profile Palm Beach County Design-Build sludge dryer project in 2003.

• Was invited and participated in the development of the newly created Environmental Module of the FE exam in 2002.

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Parsons (May 1996 – May 2000) – Project Engineer (Fairfax Virginia)

Project Engineer and assistant PM on a wide range of advanced water and wastewater treatment upgrade projects. 

 

Olver Inc. (Jan 1995 – May 1996) – EIT (Blacksburg Virginia)

Upon graduating from Clemson with a BS degree in Civil Engineering in December 1994 a full-time consulting engineering position was taken in Blacksburg to gain valuable design experience while also going to graduate school at Virginia Tech.  The simultaneous combination of these two activities had a synergistic effect on learning both the technical aspects and the business perspectives of the consulting engineering industry.