A system, voltage supply circuit, control unit for a voltage supply circuit, and method of controlling a voltage supply circuit are disclosed. The gate structures which are formed beneath the planar platform may smaller than the planar platform, and may be aligned with the gate structures which are formed atop the planar platform. A first closed cross-section is defined by the top wall, the left side wall and the left reinforcing member, and a second closed cross-section is defined by the top wall, the right side wall and the right reinforcing member. The memory is configured to store a plurality of data. The composition adjusted wastewater effluent is then continuously passed upwardly through the fluidized bed of struvite to reduce the total phosphorus content of the wastewater effluent a predetermined amount of up to about 80% or more.