Tuesday 3:30 PM
Energy - Wastewater
Aeration System Automation: Controls Strategies to Maximize Energy Savings at Low Capital Cost
This presentation will introduce aeration controls schematics of various levels of complexity and instrumentation requirements, using actual power monitoring data to provide an analysis of the efficacy of each control schematic at maintaining stable processes at minimal energy consumption. Case studies will be offered to share experiences from the use of simple dissolved oxygen-based control from a single probe to most open valve logic, dual-loop cascading controls, ammonia-controlled aeration, etc. The authors are currently designing a control system at Wheaton Sanitary District in Wheaton, Illinois, to compliment a new Neuros single-stage centrifugal "turbo" blower installed in the summer of 2011. As a part of this study, the aeration basins will be isolated and each will be controlled individually. The airflow to each tank will be controlled either by automatic dissolved oxygen measurements using in-tank probes, ammonia measurements using in-tank probes, or maintaining a constant airflow rate as set by the operators replicating the previous manual control conditions. Dissolved Oxygen and nitrogen speciation profiles across each tank will also be periodically recorded to gain insight on process kinetics. The treatment effectiveness based on BOD, TSS, and ammonia removal will be compared. The status and results of the study, including real-time DO, energy, and flow trending, will be presented.
Moderator: Dave Tucker
Jason Neighbors, Wheaton Sanitary District
Jason Neighbors is a treatment plant operator for the Wheaton Sanitary District. Jason has been in the wastewater field since 1993. He enjoys being part of an industry that focuses on cleaning water and returning it into the environment. Currently, Jason holds class 1 wastewater, class A water, and collection systems licenses. He is always interested in finding the best way to efficiently treat the wastewater in the system, and Jason enjoys exploring new ideas for improving the treatment processes at Wheaton Sanitary District with the additional benefit of cutting operational costs.
Christopher T. Sosnowski - Baxter & Woodman, Inc.
Chris Sosnowski received his B.S in Civil Engineering from the University of Illinois in Champaign-Urbana and his M.S. in Civil and Environmental Engineering from the University of Wisconsin in Madison. He is a registered professional engineer, a Microsoft Certified Professional and is truly passionate about helping government agencies effectively use technology. He has been recognized both locally and nationally for his knowledge on government technology, actively pursues teaching opportunities, and has presented over thirty times on municipal-specific technology applications. Chris has over 12 years of experience working with municipal technology, as well as water and wastewater treatment, and is the General Manager of B&W Control Systems Integration (BWCSI), a wholly owned subsidiary of Baxter & Woodman, Inc., where Chris serves as a Vice President. He is an active member of the American Water Works Association and the Water Environment Federation.
Amanda L. Poole - Baxter & Woodman, Inc.
Amanda Poole is a project engineer for Baxter & Woodman, working primarily from the Chicago and Mokena offices. Her work focuses particularly on energy-related topics in wastewater, and she has been involved in numerous wastewater treatment plant energy audits and aeration energy reduction projects throughout the Chicagoland area. Amanda received her B.S. and M.S. in Environmental Engineering from the University of Illinois in Urbana – Champaign. She awaits her P.E. licensure in December 2012. She is an active member of Central States Water Environment Association.