Treating a Variable Salinity Supply From Concept to Operation

The paper will describe the design of a reverse osmosis treatment facility that is capable of treating a variable salinity ground water supply with total dissolved solids ranging from 3,000 to 16,600 mg/L without any significant changes in the installed equipment. The paper will be based upon the work that was performed to design the City of Tarpon Springs Alternative Water Supply Facility. The characteristics of the initial and degraded raw water quality and the finished water quality goals will be described. The treatment system and the operations and controls features of the plant utilized to accommodate variations in the raw water quality, raw water blend ratio, recovery and concentrate disposal methods will be discussed.