Frac wastewater evaporation using turbine exhaust heat

An evaporation method, comprising:

• receiving exhaust air from a gas turbine, the gas turbine being mounted on a separate mobile power generation transport including the gas turbine and a generator to generate mobile electric power;
• receiving frac wastewater from a wastewater source;
• spraying the frac wastewater from a plurality of nozzles to generate a spray plume in front of the nozzles;
• and
• blowing the exhaust air into the spray plume to transfer heat from the received exhaust air to the frac wastewater, the heat transfer aiding in evaporation of the frac wastewater.

A hydraulic fracturing system, comprising:

• a power generation transport including a gas turbine and a generator for generating mobile electric power;
• an exhaust stack coupled to an outlet of the gas turbine, the exhaust stack releasing exhaust air from the gas turbine into atmosphere;
• an exhaust air connection coupled to the exhaust stack, the exhaust air connection discharging a portion of the exhaust air to a heat transfer system;
• and
• a liquid source configured to provide a liquid;
• wherein the heat transfer system is configured to transfer heat from the exhaust air to the liquid to aid in evaporation of the liquid.