Technical Proceedings of the 2014 Clean Technology Conference and Trade Show

Cleantech 2014

Chapter 6: Water Technologies

A.R. Völkel, C.D. Lancaster, N. Chang, A. Kole, M. Stephenson
PARC, A Xerox Company, US
232 - 235
waste water treatment, harvesting efficiency, particle concentration, particle separation, primary effluent, energy reduction
This presentation describes a novel hydrodynamic separation (HDS) technology that has the potential to dramatically reduce the energy footprint of a wastewater treatment plant (WWTP) by reducing the energy required for aeration and by increasing biogas production to offset plant energy demand. These goals are achieved because of the ability of HDS to effectively harvest from primary effluent those organic solids, which are nearly neutrally buoyant and do not sediment in the primary clarifier before they enter the secondary treatment step. In this paper we present separation results on primary effluent samples from different locations in the San Francisco Bay Area using single HDS channels in the laboratory. These results will be compared to tests from a 4-stage, 30 liter per minute pilot system that is located at a local (Sunnyvale, Silicon Valley, California) WWTP for operation in a real environment.
Reducing Energy Footprint of a Waste Water Treatment Plant by Increasing Harvesting Efficiency of Solids following Primary Clarification