The paper describes the efforts of Harn R/O Systems, Inc. and University of Central Florida pilot beta-test program to demonstrate the usefulness of Ultrafiltration for the treatment of a highly-organic Florida surface water supply in Manatee County to produce drinking water. The purpose of the study was to conduct a beta testing investigation of a...

In this work (partial results) a series of jar testing experiments were conducted to identify the impacts of tricarboxylic citric acid on the effectiveness of aluminum sulfate and ferric chloride coagulants. Acetic acid, a monocarboxylic acid, was also evaluated for the purposes of comparison with citric acid. Citric acid was found to adversely aff...

Membrane fouling is a limiting factor for the operation of UF processes and fouling management is critical for successful integration of UF technologies in water treatment. A new data analysis approach of transmembrane pressure balance (TMP balance) may improve data interpretation and operating decisions. Using flux data and different cleaning regi...

A collaborative pilot study provided eleven months of pilot testing data on four membrane vendors at a fraction of the cost to each utility of an independent study. Engineers and municipalities seeking to reduce pilot study costs while increasing testing scope may consider evaluating opportunities for multi-city collaboration. Following completion ...

Municipal wastewater effluent is a challenging feed water for membrane systems. Biological nutrient removal (BNR) systems can provide advantages for treatment of municipal wastewater relative to traditional activated sludge processes. This paper discusses operational considerations for a BNR system in a direct potable reuse application and investig...