Performance Meta-Analysis of Iron Enhanced Sand Filters

Abstract Submission: The iron enhanced sand filter (IESF) has more than 175 full-scale installations across the Northern Midwest USA and Canada since 2009. The purpose of an IESF is to adsorb phosphate in stormwater runoff, which accounts for a substantial percentage of total phosphorus. We have developed and implemented a field measurement program designed to collect the necessary information to complete an assessment of proper design, construction, maintenance and lifetime of these IESF systems and their performance. A major goal is to simplify the decision-making process of media replacement, by substituting the expensive and time-consuming monitoring process with an examination of the media. Over 35 IESF systems were monitored and their media examined to develop guidelines for media performance and time to replacement. The process and the results will be examined in this talk. We will then be able to enhance existing models and develop improved guidance for IESF design, construction, maintenance and expected media life to improve performance of IESFs, disseminate guidance on IESF design, construction, maintenance, and expected media life. We also seek to provide tools that direct proper design and maintenance and help determine IESF life expectancy in various applications.

Learning Objectives/Expected Outcome (Optional) :