DuPont ' waste water tretament and wetland recovery system for the Guadalupe river basin
DuPont operates a plastic material production plant in Victoria, Texas along the Guadalupe River and Victoria Barge Canal. Since the start of its operations back in 1951, the plant has used deep well injection as its sole wastewater discharge method. DuPont realized the business disruption that could result from increasing community concerns and potential regulatory changes that would restrict this technique in the future. To address this risk, the company started an engagement process with experts and the local community to develop an innovative water treatment facility and wetlands water recovery system to replace the company’s traditional wastewater disposal method.
DuPont modified production processes to recover and reuse over 100 tons of material formerly lost to wastewater streams. Three-quarters of this material is currently being sold to customers or recycled as catalyst and raw material, while the other quarter serves as fuel and offsets natural gas use at the plant. The wastewater effluent is treated in an on-site biological treatment facility, before being released to the newly constructed wetlands (with the participation of leading experts on the issue and local community input). These wetlands serve as a bio-filter for further treatment of the already-treated effluent before it reaches the Guadalupe River, and also provide a refuge for wildlife.