The four (4) phases of the Aqua MSBR operation are described as follows:


1. Anoxic Mixing and Mixed Liquor Recycle

2. Aeration, Mixing and Mixed Liquor Recycle

3. Pre-settle

4. Clarification


Cells 1 & 7 - Sequencing cells alternate four phases. As cell 1 progresses through phases 1-3, cell 7 will remain in phase 4 and vice versa.


Cell 2 - Phase Separator Cell designed to concentrate recycled mixed liquor solids feed stream to the anaerobic cell and promote an optimal environment to enhance phosphorus release within the anaerobic cell


Cell 3 - Fermentation Cell designed to increase concentration of volatile fatty acids (VFAs)


Cell 4 - Anaerobic Cell designed to promote phosphorus release under optimized conditions


Cell 5 - Anoxic Mixing Cell designed to provide denitrification


Cell 6 - Aerobic Cell designed to provide oxidation of carbonaceous material, nitrification, and the biological uptake of phosphorus