ENGIE WCW Energy Efficiency Upgrade

This plant energy improvement project is expected to be completed in 2024. The project is a part of self-generation incentive program (SGIP) and the Net Energy Metering 2 Program (NEM2). Significant energy improvements were made by constructing two digesters and associated facilities and a solids handling and power generation building to generate electricity from the digester gas. Additional power is supplied by several new solar panel arrays. Total energy produced from thew project will be 1.1 MW generated from solar and 460 KW from cogeneration from the gas production. Upgrades were made to the blower system that delivers process air to the aeration basins, increasing process efficiency by 60%.

In addition to the energy efficiency improvements, the headworks, grit system, influent and clarifier pumps, EQ basins, and solids handling systems were all upgraded. GSE is responsible for all civil, mechanical, piping, structural, and electrical installation for the project. GSE collaborated with the owners and designers through the 30/60/90 percent drawings and set a foundation to build a successful project. The project included two 900,000-gallon pre-stressed tanks, ground improvements including cement treated soil and drill displacement columns for the digesters and solids handling building, a custom structural steel building, and state-of-the-art aeration, solids handling, and drying technologies.