Patent ID: 9073762
Filing Date: 2015-07-07
Classification: C02F

Abstract:
1. Fluid purification or treatment apparatus comprising a series of alternative interconnected upright elongated primary treatment chambers and further chambers, whereby fluid flowing through the apparatus is subjected to multiple treatments, wherein: each upright elongated primary treatment chamber comprises, an inlet for fluid to be treated at an upper end of said primary treatment chamber, an outlet from the primary treatment chamber at a lower end of said primary treatment chamber such that fluid flows downwardly through said primary treatment chamber from said inlet to said outlet, means for introducing a sterilizing agent into a lower end of said primary treatment chamber for bubbling upwardly through liquid flowing downwardly through said primary treatment chamber, means at the upper end of said primary treatment chamber for removing waste in said liquid conveyed by said bubbles upwardly through said primary treatment chamber, each further chamber, being inclined and connected between the outlet of an associated primary treatment chamber and the inlet of an adjacent primary treatment chamber, comprises: an inlet located at a lower end of the further chamber for receiving gas treated fluid from said associated primary treatment chamber, said inlet connected to the lower end of said associated primary treatment chamber; and an outlet at an upper end of said further chamber such that the flow of gas treated liquid is upwardly through said further chamber; wherein the outlet of each further chamber is located below the level of the input of the associated primary treatment chamber such that the fluid flows gravitationally through the fluid purification or treatment apparatus, and wherein a one or more of said further chambers is associated with an ultraviolet light source for exposing gas treated liquid from said associate primary treatment chamber to ultraviolet light.