I am trying to find the mass balance and/or the amount of dilution water we are using in our WWT plants (in regards to chlorides). I have an average 12000 ppm of chloride (daily) in a slurry solution coming into a dewatering plant from there it goes into the EQ tank of WWt @ 8000 ppm and leaves the plant @ 6500 ppm. the plant processes about 160,000 gal a day. What is the equation to figure this out, do I need more information, for the answers will I have to back engineer the equation? Any help would be appreciated.