Abstract: Energy recovery arrangements are described for evaporative cooling systems in which cooling water undergoes a pressure transition from a pressurized state to a pressure-reduced state at one or more pressure transition locations in the cooling system, with an energy recovery water turbine being positioned at at least one of the pressure transition locations to receive pressurized water for flow therethrough to generate an energy output. The energy output may be utilized to reduce cooling utility requirements for an installation in which the evaporative cooling system is installed and/or the recovered energy may be exported to an electrical grid or other use facility.

Abstract: A self-contained, portable water purification system, including (a) an ozone supply, (b) an ozone contact chamber mixing a contaminated or potentially contaminated water stream with ozone generated by such ozone supply, (c) an ozone destruction unit for destructing ozone contained in the water stream and converting said water stream into an oxygen-rich and ozone-depleted water stream, and (d) a downstream biologically active carbon filter, for receiving such oxygen-rich and ozone-depleted water stream and biologically destructing at least a portion of contaminants contained therein.

Abstract: The present invention provides a self-contained, self-monitoring water purification system able to be transported to and used in remote areas. The system processes contaminated water through a preliminary filter, an oxidation contact chamber, a secondary filter and a chemical biocidal agent to obtain potable water. A number of sensor probes send information on critical operating parameters to a programmed logic control which, in turn, analyzes the information and generates an output signal to alter system operations when needed. In a second embodiment, the invention system is provided with a desalination unit in the form of a reverse osmosis filter to remove salt and extremely fine particles.