Just add wood chips to improve fish farming wastewater

摘要

Bioreactors filled with wood chips can help clean wastewater from fish farming. Researchers built a simple, organic bioreactor that consists of long containers filled with wood chips. The system effectively and inexpensively treated wastewater from a fully operational recirculating fish farming system in West Virginia. Water from the fish tank enters the bioreactor, flows through the wood chips, and exits through a pipe at the other end of the system. Along the way, solids settle and bacteria in the wood chips remove nitrogen.