The Englewood, FL Brackish Water RO Desalting Plant - 25 Years of Innovation

摘要

The Englewood Water District (EWD) located in Englewood, Florida operates a brackish water reverse osmosis (RO) desalting facility with nearly 25 years of operating history and treatment technology "firsts" and process advances. Numerous studies, improvements, and expansions over the years have improved RO performance and reduced energy consumption. Some of the advances that will be discussed herein are:rn1. Development of site-specific, membrane-specific flux criteriarn2. Innovative bacterial fouling study and fouling control remedial measurern3. Energy recovery and membrane stage flux-balancing methodsrn4. Use of three generations of spiral wound RO membrane elementsrn5. Innovative RO train design features to maximize performance and minimize costs with increasing feed water salinity from an initial 4,700 mg/L TDS to current values seen in some wells of approximately 8,000 mg/LrnThis paper will summarize the history of the EWD RO plant and describe the process advances, some of which have had an impact not only on the Englewood facility, but on the membrane industry in general.