Powell Water Systems, Inc. products

The PWMAS 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.   A robust and diverse community of microalgae is used for aeration of a wastewater lagoon. Unlike the cyanobacteria that forms a surface mat on lagoons and lakes, the microalgae utilized by the PWMAS, disperses evenly within the lagoon, thus providing 100% available oxygen for microbes to remove the incoming waste product –also known as biochemical oxygen demand (BOD5). Every structure and supporting equipment included in the PWMAS is used to maximize the growth of the microalgae and microbes; therefore, maximizing overall wastewater treatment.

Electrocoagulation is the process of destabilizing suspended, emulsified or dissolved contaminants in an aqueous medium by introducing an electrical current into the medium. The electrical current provides the electromotive force to drive the chemical reactions. When reactions are driven or forced, the elements or compounds will approach the most stable state. Generally, this state of stability produces a solid that is either less colloidal and less emulsified (or soluble) than the compound at equilibrium values. As this occurs, the contaminants form hydrophobic entities that precipitate and can easily be removed by a number of secondary separation techniques.