Systems and methods for concentrating waste water fluids

A method of vaporizing raw water from oilfield operations and concentrating contaminants within raw water where the raw water contains oil, salt and particulate contaminants comprising the steps of:

• a. providing heat in the form of hot gases to a stack operatively connected to a flue where the hot gas is a combustion gas from an internal combustion engine and the stack vaporizes and vents vaporized water to the atmosphere;
• b. distributing raw water within the hot combustion gases within the stack by a surface area generating technique;
• c. causing the raw water to come into direct contact with the hot gasses within the stack;
• d. monitoring at least one temperature within the stack;
• e. controlling the flow of raw water within the stack while maintaining continuous raw water flow sufficient to minimize scaling within the stack during operation;
• and,
• f. collecting concentrated raw water from the stack within a holding tank and recirculating concentrated raw water from the holding tank to the stack.

A method of simultaneously a) concentrating contaminants within raw water, where the raw water is from oilfield operations and contains oil, salt and particulate contaminants and b) removing soot, particulate and/or chemicals from flue gases and/or engine exhaust comprising the steps of:

• a. providing heat in the form of hot gas to a stack operatively connected to a flue where the hot gas is a combustion gas from an internal combustion engine;
• b. distributing raw water within hot combustion gases within the stack by a surface area generating technique;
• c. causing the raw water to come into direct contact with the hot gasses;
• d. monitoring at least one temperature within the stack;
• e. controlling the flow of raw water within the stack while maintaining raw water flow through the stack sufficient to minimize scaling within the stack during operation;
• and
• f. collecting concentrated raw water from the stack within a holding tank and recirculating raw water within the stack.