Accumulated residue removal from carriers used in a water treatment system
AssigneeAqwise Wise Water Technologies Ltd.
InventorsNir Assulin, Shmuel Eliraz, Ohad Reinhartz
Life of this patent
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Abstract
A water treatment system including an enclosure for water to be treated, a multiplicity of biomass carriers located within the enclosure, at least one airlift in the enclosure for raising the water and the biomass carriers and at least one mechanical biomass carrier accumulated residue removal apparatus operative to remove accumulated residue from the biomass carriers.
Claims17
A water treatment system comprising:
- an enclosure for water to be treated;
- a multiplicity of biomass carriers located within said enclosure;
- at least one airlift comprising a pipe extending upward from a location near a bottom end of said enclosure and configured to raise water and biomass carriers from said enclosure;
- and
- at least one mechanical biomass carrier accumulated residue removal apparatus located above the airlift and configured to receive the biomass carriers raised by the airlift, wherein the residue removal apparatus comprises:
- a rotatable drive shaft;
- lifting vanes fixed to the drive shaft to lift the raised biomass carriers and separate the raised biomass carriers from the raised water;
- and,
- radially extending bats fixed to the drive shaft and located above the lifting vanes to impact lifted biomass carriers and to remove accumulated residue from said biomass carriers.
A water treatment system according to 2, wherein said at least one mechanical biomass accumulated residue removal apparatus is configured to cause detachment of residue therefrom when out of the water.
A mechanical biomass carrier accumulated residue removal apparatus configured to be located above an enclosure of a water treatment system and configured to receive biomass carriers from an airlift of the water treatment system, whereby said airlift raises biomass carriers and water into said mechanical biomass carrier accumulated residue removal apparatus, wherein said removal apparatus comprises:
- a rotatable drive shaft;
- lifting vanes fixed to the drive shaft to lift the raised biomass carriers and separate the raised biomass carriers from the raised water;
- and
- radially extending bats fixed to the drive shaft and located above the lifting vanes to impact lifted biomass carriers and to remove accumulated residue from said biomass carriers.
A method of removing accumulated residue from biomass carriers in a water treatment system, said water treatment system including an enclosure for water to be treated and a multiplicity of biomass carriers located within said enclosure, the method comprising:
- removing water together with residue burdened biomass carriers from said enclosure into a residue removal apparatus;
- lifting the residue burdened biomass carriers out of the removed water, while the removed water is directed to fall back into the enclosure;
- applying a shear force to said residue burdened biomass carriers when said carriers are lifted above the water. thereby causing detachment of residue therefrom to form residue removed biomass carriers;
- and
- returning said residue removed biomass carriers to said enclosure.
Dependencies are inferred from the claim text.