Alternative Energy Sources for Wastewater Treatment Plants

摘要

The technology assessment provides an introduction to the use of several alternative energy sources at wastewater treatment plants. The report contains fact sheets (technical descriptions) and data sheets (cost and design information) for the technologies. Cost figures and schematic diagrams of the technologies are included. The following alternative energy technologies appear to be potentially cost effective: Heat pumps which use influent or effluent wastewater as their heat source, for supplying process or building heat; Geothermal direct-use systems for large energy loads when geothermal source is adequate; Wind power systems for large electrical loads when annual wind flux is adequate; Passive solar systems where they can be cost-effectively integrated into the overall architectural design of a facility; Low-head hydro systems may be appropriate for smaller plants which have an available head greater than three meters.