Dow Water & Process Solutions (DW&PS) has launched its IntegraFlo™ ultrafiltration modules which it said are expected to deliver up to 85% more flow compared to conventional UF modules, and require less piping and skid infrastructure to reduce UF system capital expenditure by up to 25%. This is compared to a competitive module with a 55 m2 active area operated at equivalent flux.
Available in two sizes, IntegraFlo modules' symmetric H-PVDF hollow fiber membrane is formed from high-grade polymeric chemicals, PVDF, with uniform pore size designed for applications including industrial, municipal, seawater desalination pre-treatment and wastewater reuse.
The system uses an outside-in flow configuration, which DW&PS claimed allows for less plugging, higher solids loading, higher flow area and easy cleaning. In addition, such configuration enables the use of air-scour, which boosts cleaning efficiency.
The manufacturer claimed the module design has 85% more active membrane area than competitive modules to facilitate higher productivity without an increase in module size or weight. Due to the larger membrane area, fewer modules are required, thus reducing the footprint of the installation by up to 45%, the company said.
Also launched at the Aquatech China 2013 show from DW&PS were the ECO Reverse Osmosis (RO) elements. The elements use low dP feed spacers with the aim to deliver lower energy costs and reduced chemical consumption when RO is followed by a mixed bed ion exchange unit.
DW&PS said the RO membranes are intended to deliver up to 40% lower salt passage at up to 30% less energy when compared to standard RO elements. FILMTEC ECO elements are offered in ECO-400i and ECO-440i configurations.