The purpose of subject evaluation is to recover the potential energy from a portion of your effluent discharge waters using a hydraulic turbine direct coupled to an induction generator and feed the generated electricity back into the WRF plant, reducing your overall electrical cost. VFH Turbines use Siemens soft and hardware computer components to control the system.
Once installed, maintenance of the generating equipment will not adversely affect your normal WRF operations. The installation of the 36” diameter penstock is large for the present-day effluent discharge flow. Still, we must limit the intake velocity of the turbine and supporting 36” diameter penstock at or below 6 ft./sec. At 6 ft./sec flow velocities, the 36” diameter penstock will support a future flow of up to 40 mgd or 62 cfs.
With clean water and no debris in the effluent discharge, we suggest a more efficient, slower operating speed, Francis-style turbine with wicket gates or a slide drum for regulating the intake of water and resulting KW production, in lieu of the faster-operating speed, and less efficient propeller turbine.
Proprietary processes within the VFH Turbine have been designed to dramatically increase DO (dissolved oxygen) into all discharge water flowing through the turbine by up to 350%. This improves water quality and enhances the receiving waters. Aerobic bacteria and aquatic life, such as fish, must have DO to survive.