Wastewater steams may include one or more metal contaminants. In various embodiments, a wastewater stream may be sent to a fluid treatment system to reduce the amount of metal contaminants in the wastewater stream. In some embodiments, a fluid treatment system may include a first vortex nozzle unit positioned in an opposed relation to a second vortex nozzle unit. Contacting the wastewater stream exiting the first vortex nozzle unit with the wastewater stream exiting the second vortex nozzle unit may precipitation of one or more metal contaminants in the wastewater steam.

 
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