The Institute for Sustainable Infrastructure has honored the Blower Air Cleanup System Project at the Donald C. Tillman Water Reclamation Plant with an Envision Silver award. DCTWRP is one of the four major water reclamation plants supporting the Los Angeles Clean Water Program.
In 2007, the City of Los Angeles’ Bureau of Engineering installed process blowers at the plant. However, the foul air that the new blowers extracted contained corrosive hydrogen sulfide gas, particulates, dust, mists, and other substances. Had this issue been left untreated it would have caused premature erosion and degradation of the blowers.
To tackle the issue, the Bureau installed a biotrickling filter system to treat the foul air. The main advantage of the system is that it doesn’t require chemical usage, so it lowers costs, ensures a safer working environment for plant operators, reduces environment risk, and minimizes waste. This alternative also scales back operations and maintenance costs over the long term.
Among the project’s other sustainability achievements is a comprehensive waste management plan for construction and demolition debris. Additionally, 100 percent of water required for operations is drawn from nonpotable wastewater treatment process water.
The ISI Envision rating system measures sustainable infrastructure projects in five categories: quality of life, leadership, natural world, resource allocation, and climate and risk. Learn more about Envision and ISI at sustainableinfrastructure.org.