Method of packing media in a tower or bed
AssigneeImperial Chemical Industries PLC
InventorJohn Lunt
Life of this patent
Estimating the term…
Abstract
A method of biological treatment of effluent and the like in a packing tower or bed. Individual plastic packing elements are disposed in open-weave or open-mesh sacks, and are arranged in the tower or bed. Effluent is then passed through the tower or bed, bacteria and the like forming as a biological film on wetted surfaces of the packing elements. The open-weave arrangement allows the passage of air to the biological film, and allows passage of the biological film out of the tower when it becomes loosened from time to time. The sacks are disposed permanently in the tower, no cleaning or the like thereof being necessary.
Claims3
A method of biologically treating effluent and sewage comprising the steps of
- a. disposing a plurality of plastic elements as packing media in each of a plurality of open-weave or open-mesh sacks, the openings in said open-weave or open-mesh sacks being smaller than the smallest dimension of an individual plastic element,
- b. filling a tower or bed with a plurality of said open-weave or open-mesh sacks containing said plastic elements therein, said plastic elements when wetted providing surfaces for growing bacteria and other micro-organisms as a biological film,
- c. passing effluent and sewage through said packed tower or bed while supplying through said media and said sacks air required to sustain the growth of the bacteria and other micro-organisms on wetted packing element surfaces, and allowing the biological film to pass through said media and said sacks as it from time to time is dislodged, and
- d. retaining said packing media containing sacks in place in said tower or bed for the effective life of said tower or bed.
Dependencies are inferred from the claim text.