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The BiO2 PW (Powell Water System) provides lagoon aeration via microalgae (biological oxygen generators) that greatly improves wastewater treatment compared to both non-aerated lagoons and aerated discharging lagoons and can be done at a much lower lifetime cost compared with surface aerators.
Patent Number: US 10,358,361 B2
Issued to: Scott Wade Powell
Powell Water Systems, Inc.
Patented: Microalgae for Wastewater Treatment
Tertiary Treatment Using Powell Water Systems Electrocoagulation
A robust and diverse community of microalgae is used for aeration of a wastewater lagoon, but does not include the well-known blue-green algae (cyanobacteria) that can be harmful in a lagoon system. The microalgae utilized by the BiO2 PW does not form a surface mat but rather disperse evenly within the lagoon, thus providing 100% available oxygen for bacteria to remove the incoming waste product also known as biochemical oxygen demand (BOD).
Once microalgae are cultivated and introduced into the wastewater or confined animal lagoons, they are mixed using fine-bubble diffusers creating a critical mass of microalgal cells thereby producing the optimal amount of oxygen thereby creating robust nutrient uptake.
Microalgae Nursery Under Very Controlled Environmental Conditions
Mechanical blowers only provide about 20% oxygen, is very inefficient, and is distruptive to the entire ecosystem. Every structure and supporting equipment included in the is used to maximize the growth of the microalgae and bacteria, therefore maximizing overall wastewater treatment.