Mr. Roberts is a licensed Professional Engineer and holds a Bachelor of Science degree in Mechanical Engineering from Boise State University.  Mr. Roberts has nearly ten years of experience working with municipal and industrial wastewater treatment equipment and systems.

EXPERIENCE INCLUDES: 

Mr. Roberts performs mechanical systems failure analysis for pressurized plumbing systems and HVAC systems. He has extensive experience in the design of large industrial wastewater treatment plants with flows over 500,000 gallons per day up to 30 million gallons per day. He has been involved in the design and build process for several large-scale treatment plants. He is responsible for all plant pipe size and material selection, selection and specifications of all valves, and specifications for all major pieces of equipment, including but not limited to pumps, chemical systems, blowers, conveyors, grinders, centrifuges, screens, and tanks.

Mr. Roberts also performs heat transfer analysis to size heat exchangers, chillers, and cooling towers for anaerobic digester biogas and wastewater streams. Mr. Roberts works directly with clients to determine the required plant specifications from inception through the design and build process.

Sample Design and Construction Projects:

Low Rate Anaerobic Digester and Activated Sludge Design - McCain Foods - Othello Plant WWTP, Othello, WA

Mr. Roberts was a process mechanical engineer on the design team for the design of a 30-million-gallon Low Rate anaerobic digester at a client’s potato processing facility in the State of Washington. The digester was used to provide treatment capacity for a major production expansion at the facility. The digester was designed to reduce the organic load generated by the facility prior to treatment by an activated sludge system designed for total nitrogen removal TSG performed the overall system process design, detail design, construction services, and biological seeding for startup. Project scope included construction of a new two-million gallon per day (MGD) water treatment facility for a raw food processing plant. Structures include a concrete Covered Anerobic Lagoon (CAL), sized at approx. 580-feet x 290-feet with 14-foot-tall walls, an Aerobic Basin, Secondary Clarifier, Headworks/Screening Building, Blower Building, and Biogas Building. The facility treats process water by removing oils and contaminants, which is then used for agriculture land application. The treatment process also produces byproduct biogas that is routed over 3,000 LF back to the food processing plant and used to generate energy.

Low Rate Anaerobic Digester and MBR/RO Treatment System

Mr. Roberts was a process mechanical engineer on the design team for the design of a 34-million-gallon Low Rate Anaerobic Digester for a potato processing facility. The digester is followed by a Membrane Bioreactor (MBR) system specifically designed for biological nutrient removal of both nitrogen and phosphorus. A portion of the treated MBR effluent then flows through a Reverse Osmosis system to provide high quality water for reuse within the processing facility. The low rate digester was started up in late 2018 and the MBR/RO system started up in May 2019. TSG completed the startup and training for this facility, along with preparation of the operations process control manual.

Primary Treatment Upgrades and MBR/RO Treatment System

Mr. Roberts was a process mechanical engineer on the design team for upgrades to an existing potato processing facility wastewater treatment system. Upgrades included new sludge dewatering centrifuges, dry polymer systems, and addition of a complete MBR/RO treatment system with Reverse Osmosis effluent being used within the processing facility.

Wastewater Treatment Plant Upgrade – JWPE – Ogg WWTP – Jerusalem, Israel

Mr. Roberts was lead process mechanical engineer and project manager on the design team for upgrades of an existing municipal sewage treatment plant increasing treatment capacity from 8 million gallons per day to 29 million gallons per day. Project scope included design of a new headworks with screenings and grit removal, addition of multistage centrifugal blowers and floating diffusers, new secondary clarifiers, RAS/WAS pumping facilities, and sludge dewatering facilities. TSG also will also be providing construction oversight services. Construction efforts will include addition of a new headworks structure, upgrades to four existing earthen lined 13 million gallon aeration basins, eight 115 foot diameter secondary clarifiers, two RAS/WAS pump buildings, and a new dewatering building.