Patent ID: 11969706
Assignee: KING FAISAL UNIVERSITY
Field: Environmental technology (Chemistry)
Classification: CPC B  A  C | IPC A  B  C

Claim 12:
13. A method for treating aquaculture wastewater, the method comprising:
providing a filter comprising a linear arrangement of multiple layers of a compressed Chlorella ellipsoidea lipid free biomass by-product of Chlorella ellipsoidea biodiesel production and a water-resistant substance to solidify the compressed Chlorella ellipsoidea lipid free biomass by-product into the multiple layers, wherein each of the multiple layers is separately changeable;
passing aquaculture wastewater to be treated through the filter such that the aquaculture wastewater initially contacts a first layer of the multiple layers having a high porosity, with each succeeding layer following the first layer in the linear arrangement having a lower porosity than its immediately preceding layer;
removing ammonia, phosphorus, and organic matter from the aquaculture wastewater as the aquaculture wastewater passes through the filter; and
recovering treated wastewater.