System and method for removal of fluoride from wastewater using single fluoride sensing electrode

A system for removing fluoride from a fluoride bearing industrial wastewater, comprising:

• a reaction tank for processing said wastewater, said reaction tank including a first input for feeding said wastewater into said reaction tank, and a second input for adding calcium salts to said reaction tank to form precipitated fluoride;
• a filtration tank for removing said precipitated fluoride from said wastewater, said filtration tank including an output for discharging filtered wastewater;
• a first single fluoride electrode disposed at said first input of said reaction tank, said first single fluoride electrode measuring a concentration of fluoride in said wastewater fed into said reaction tank and providing an output signal;
• a second single fluoride electrode disposed at said output of said filtration tank, said second single fluoride electrode monitoring a concentration of fluoride in said filtered wastewater and providing an output signal;
• and
• a programmable controller for controlling addition of said calcium salts into said reaction tank responsive to said output signal provided by said first and second fluoride electrode so as to provide a treated output stream of desired quality.