Sewage recycling is a complex process that requires multiple steps to convert sewage into reusable water resources. Generally speaking, the steps of sewage recycling include: pretreatment, primary treatment, secondary treatment, tertiary treatment (or advanced treatment), disinfection and reuse.

Water disinfection system refers to a system that uses chemical methods to attack and eliminate germs (such as bacteria, fungi) and viruses in water. It ensures the safety of drinking water by adding specific disinfectants to kill microorganisms in the water.