How does the Xiaomi Smart Filtered Water Dispenser Pro produce waste water after adding pure water?

A: The Xiaomi Smart Filtered Water Dispenser Pro produces wastewater after adding pure water because of the characteristics of the cartridge. Because of the characteristics of RO reverse osmosis, in the high-pressure filtration process, the water will not pass through 100%. So every time the filter produces water, there is a certain amount of wastewater outflow, which is a normal phenomenon.