1. Option 1 – KC Water may consider optimizing the dosage of Lime and other chemicals to lower the production of residuals. The WTP only feeds the required amount of lime necessary to meet the treatment objectives of the excess lime softening process, instead using a certain dosage rate would increase residual production associated with polymer and ferric sulfate not Lime. 2. Option 2 – KC Water is planning to install horizontal collector wells which will see a higher concentration of calcium and magnesium, thus increasing CaCO3 and Mg(OH)2 production. The addition of TSS from the river water and polymer/coagulant, will see a net decrease in residual production across all seasonal conditions. 3. Option 3 – Developer can recover aluminum and iron from used coagulants through acid extraction and then use sodium hydroxide treatment to reproduce coagulant for water treatment. 4. KC Water uses gravity thickening method (sedimentation) as a method to remove solids from the water; this method is performed within the primary basins at the WTP.
