The Sustainability Gap
In modern civil engineering, Tertiary Wastewater Treatment is globally recognized as the gold standard for protecting our fragile aquatic ecosystems. Municipalities spend hundreds of millions of dollars upgrading facilities to achieve near-pristine effluent.
However, by utilizing 20th-century biological processes to achieve 21st-century water purity targets, we are solving a localized problem (eutrophication) by actively accelerating a global crisis (climate change). We are trading water quality for atmospheric debt.
Moving from "Removal" to "Capture"
Tertiary treatment is an absolute energy glutton. Even worse, during the highly sensitive nitrification-denitrification stages of nutrient removal, plants frequently experience biological "stalls," emitting Nitrous Oxide (N2O).