| 摘要 |
The invention concerns a gravity fed water purification system comprising: - a filtration unit adapted to separate particulate and soluble material from the input water, which unit is in fluid communication with - a chemical dispensing unit such that flow rate of water exiting the filtration unit is controlled by - a flow control means before the water encounters a biocide dispensed by the chemical dispensing unit, the water thereafter being retained in - a retention chamber for a predetermined period of time before exiting the water purification system through - a scavenger means adapted to separate the dispensed biocide from the exit water. |
