Rainwater Filtration and Purification
In the rainwater sink downstream of the rainwater storage reservoir, the flood peak rain temporarily stored in the pool, until the rain flood peak subsided, then the regulation of the pool of rainwater discharged to the municipal rainwater pipe network, thereby reducing the pressure of municipal rainwater pipe network drainage.
Filtration removes debris from the water. Filtration is included in every system, even simple irrigation systems. Examples of filtration systems include: screen filters, paper filters, and carbon or charcoal filters. Disinfection or purification kills contaminants and removes harmful substances that may be present.
Water purification is the removal of contaminants from raw water to produce drinking water that is pure enough for human consumption or for industrial use.
Techniques of filtration and purification include heat filtration, activated charcoal absorption, chemical disinfection ultraviolet purification, distillation and flocculation.