WARRENDALE, Pa., November 2, 2005--The Envirex Diamond™ edition membrane diffuser from the USFilter unit of Siemens improves oxygen transfer and lengthens diffuser operating life in biological wastewater treatment systems. Available in Spring 2006, the diffuser was developed specifically to overcome the shortcomings typical of other membrane diffusers, such as reduced oxygen transfer efficiency, narrow airflow rate operating range, diffuser headloss and overall life cycle.  

The new Diamond membrane diffuser employs a unique diamond-shaped aperture configuration (U.S. patent pending) which optimizes the slit pattern, making possible a wider range of airflow through the diffuser--0.5 to 5 SCFM per diffuser (compared to 0.5 to 3 or 4 SCFM per diffuser from other manufacturers). This results in reduced headloss and increased efficiency of the transfer of oxygen into the wastewater. Less air and fewer diffusers are required per treatment basin, and this leads to lower operation and maintenance costs. The diffuser is made of a custom-formulated EPDM material that is a wastewater specific compound. It offers a 50 percent greater tensile strength than typically designed diffusers, and lower soluble oil content for longer product life.

The Diamond membrane diffuser is an integral part of USFilter’s Envirex DualAir® fine-bubble aeration system. Applications include biological wastewater treatment systems of various sizes and configurations for municipal and industrial customers. Kits are also available to retrofit the Diamond edition membrane into any of the major manufacturers’ existing 9-inch ceramic or membrane disc diffuser systems.