THE ATTENDEE WILL LEARN ABOUT THE ORIGIN OF RULES OF THUMB AND HOW THEY HAVE CHANGED OVER THE PAST 20 YEARS. THIS IS A TECHNOLOGY AND TREATMENT ENVIRONMENT UPDATE FOR ONE OF OUR MOST FREQUENTLY DOWNLODED PAPERS.

SILICA DEPOSITION AND COPRECIPITATION RPEDCITION, TREATMENT AND CONTROL

CALCITE CONTROL AT HIGH CYCLES: THE ROLE OF COPOLYMERS AND HIGHER POLEMR S IN BLENDS

BARIUM SULFATE AT HIGH CYCLES

BLENDING INHIBITORS: SYNERGY OR ANATAGONISM

ROBERT J FERGUSON

INCREASED CYCLES IN COOLING SYSTEMS, AND RECOVERY IN MEMBRANE SYSTEMS REQUIRE A MODIFICIATION OF RULES OF THUMB FOR EVALUATING SYSTEMS AND TEACHNING THE ESSENTAILS OF WATER TREAMENT IN AN UNDERSTANDABLE MANNER. THIS PAPER UPDATES RULES OF THUMB FOR SCALE CONTROL IN COOLING WATER AND MEMBRANE SYSTEMS. SCALES DISCUSSED IN A THAN VERSUS NOW CONTEXT INCLUDE CALCITE, SILICA AND METAL SILICATES, AND  SULFATE SCALES INCLUDING BARIUM SULFATE. INHIBITOR RULES OF THUMB FOR SYNERGY ARE ALSO DISCUSSED.

ROB FERGUSON BEGAN MODELLING SCALE FORMATION AND CONTROL IN 1974 AND HAS BEEN A MAJOR CONTRIBUTOR TO THE THOERY AND APPLICATION OF SCALE PREDICTION AND CONTROL. HE IS PROUD TO HVE BEEN HONORED AS THE 2017 RAY BAUM WATER TECHNOLOGIST OF THE YEAR AND AS THE RECIPIENT OF THE FIRST EVER AWT INNOVATION AWARD IN 2020.