The researchers studied how to optimize a system that uses bacteria to clean up wastewater from breweries. They tested different speeds for the wastewater to flow through the system and found that a flow rate of 18 hours worked best, removing 88% of the pollutants. They also discovered that too much bacteria growth can clog the system, but they figured out the limit before that happens. This system is a good way to treat strong wastewater and can help breweries follow environmental rules.