Electrical-grid powered aeration in reactor basins at activated-sludge wastewater treatment plants (WWTPs) enables digestion by mixing and oxygenating the wastewater (10 States Standards 2004).

However, mixing and oxygenating using the same aeration equipment is often inefficient in that typically, much more energy is needed to mix than oxygenate the wastewater. Energy loss is worse during off-peak inflow periods, when there is less need for dissolved oxygen, but still a need for intense mixing to maintain the required total suspended solids (TSS) in the basin. The cost of electricity for aeration is a major part of operational expense.

SolarBee’s more efficient and effective mixing technology, whether solar-powered or grid-connected, can reduce the need to use grid-connected aeration equipment and can improve operational and processing efficiencies.