US 12,110,243 B2
Biofilm carrier media in moving bed biofilm reactor processes
Per Magnusson, Malmö (SE); and Christian Rosen, Lomma (SE)
Assigned to Veolia Water Solutions & Technologies Support, Saint-Maurice (FR)
Appl. No. 16/964,985
Filed by VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT, Saint-Maurice (FR)
PCT Filed Jan. 29, 2019, PCT No. PCT/EP2019/052091
§ 371(c)(1), (2) Date Jul. 26, 2020,
PCT Pub. No. WO2019/145554, PCT Pub. Date Aug. 1, 2019.
Claims priority of application No. 1850094-2 (SE), filed on Jan. 29, 2018.
Prior Publication US 2021/0047204 A1, Feb. 18, 2021
Int. Cl. C02F 3/12 (2023.01); C02F 1/24 (2023.01); C02F 3/08 (2023.01); C02F 3/10 (2023.01); C02F 3/30 (2023.01); C02F 11/12 (2019.01); C02F 11/122 (2019.01); C02F 11/127 (2019.01); C02F 11/13 (2019.01); C02F 11/14 (2019.01); C02F 11/143 (2019.01); C02F 11/147 (2019.01)
CPC C02F 3/104 (2013.01) [C02F 1/24 (2013.01); C02F 3/08 (2013.01); C02F 3/121 (2013.01); C02F 11/12 (2013.01); C02F 11/13 (2019.01); C02F 11/122 (2013.01); C02F 11/127 (2013.01); C02F 11/14 (2013.01); C02F 11/143 (2019.01); C02F 11/147 (2019.01)] 32 Claims
OG exemplary drawing
 
1. A bio-carrier for carrying a biofilm in a moving bed biofilm reactor (MBBR) comprising:
the bio-carrier comprising a dehydrated sludge particle; wherein the bio-carrier is a virgin carrier and a mobile structure configured to support and carry a biofilm in a MBBR;
wherein the dehydrated sludge particle has a nominal diameter of 0.7 to 7 mm, the dehydrated sludge particle has a volumetric mass density of 1.02 to 1.8 g/cm3, as determined by weighing the dehydrated sludge particle in air and then in ethanol (99.9 vol-%) at 20 0C and 1 atm, and the dehydrated sludge particle has a water content between 0 and 50 weight-%, as measured as water content fraction of the dehydrated sludge particle on total mass basis;
wherein the particle has a settling velocity in the range of 0.02 m/s to 0.4 m/s in denatured ethanol (99.9 vol.- % ethanol) at 20 0C and 1 atm.