US 11,951,420 B2
Filter apparatus and method
Nicholas John Jackson, Ormskirk (GB); and Jasper Hendericus Maria Kuijper, Burscough (GB)
Assigned to EVOLUTION AQUA LIMITED, Wigan (GB)
Appl. No. 16/301,889
Filed by Evolution Aqua Limited, Wigan (GB)
PCT Filed May 16, 2017, PCT No. PCT/EP2017/061766
§ 371(c)(1), (2) Date Nov. 15, 2018,
PCT Pub. No. WO2017/198679, PCT Pub. Date Nov. 23, 2017.
Claims priority of application No. 1608550 (GB), filed on May 16, 2016; application No. 1608615 (GB), filed on May 16, 2016; application No. PCT/GB2016/000101 (WO), filed on May 16, 2016; and application No. 1703659 (GB), filed on Mar. 7, 2017.
Prior Publication US 2020/0269163 A1, Aug. 27, 2020
Int. Cl. B01D 24/46 (2006.01)
CPC B01D 24/4636 (2013.01) [B01D 24/4642 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A filter apparatus comprising:
a filter housing comprising a tubular member having a longitudinal axis, a liquid inlet and a liquid outlet, the filter housing defining a filter chamber having a sidewall defined by the tubular member, wherein the filter chamber has a substantially constant profile or a substantially continuously tapered profile along the longitudinal axis without constrictions or narrowing sections, the filter chamber comprising a plurality of mechanical filter elements for forming a static filter pack to perform mechanical filtration of a liquid, the mechanical filter elements each having an open cell structure comprising a plurality of open cells, the plurality of open cells each having a cross-sectional area less than 3 mm2;
the filter apparatus being configured to generate a flow of the liquid through the mechanical filter elements during filtration;
wherein the filter apparatus is configured to establish a flow rate per unit cross-sectional area of the static filter pack in the range 150 m3/m2/h to 550 m3/m2/h during filtration.