NOVELTY - Wastewater treatment system for thermoelectric power plant has first wastewater concentrator operatively connected to wastewater holding reservoir, first wastewater concentrator implementing contained air-water interface liquid evaporator, second wastewater concentrator connected to the wastewater holding reservoir, second wastewater concentrator implementing the contact adiabatic wastewater concentrator system, second wastewater concentrator comprising contact evaporative section and gas-liquid separator, and stream of wastewater generated in thermoelectric power plant.    USE - The wastewater treatment system is useful for processing wastewater produced in thermoelectric power plants (all claimed), other industrial plants, and/or other industrial sources.    ADVANTAGE - The wastewater treatment system is environmentally-friendly, and reduces loss of unused waste heat to the atmosphere.    DETAILED DESCRIPTION - Wastewater treatment system for thermoelectric power plant comprises first wastewater concentrator operatively connected to wastewater holding reservoir, first wastewater concentrator implementing contained air-water interface liquid evaporator, second wastewater concentrator operatively connected to the wastewater holding reservoir, second wastewater concentrator implementing the direct contact adiabatic wastewater concentrator system, second wastewater concentrator comprising direct contact evaporative section and gas-liquid separator, stream of wastewater generated in a thermoelectric power plant operatively connected to the wastewater holding reservoir, and stream of hot feed gases operatively connected to the second wastewater concentrator to supply feed gases to the direct contact evaporative section simultaneously as the stream of wastewater, where the direct contact evaporative section mixes the hot feed gases directly with the wastewater and evaporates water from the wastewater to form water vapor and concentrated wastewater, and the gas-liquid separator separates the water vapor from the concentrated wastewater and exhausts discharge gases from the gas-liquid separator which includes water vapor and some or all of the feed gases. INDEPENDENT CLAIMS are included for the following:    (1) method of processing wastewater from a thermoelectric power plant; and    (2) thermoelectric power plant.