Latest product launches

New Puron submerged module simplifies design, operations & retrofit of large-scale MBR plants

Posted: Thursday 4th October 2007

Koch Membrane Systems, Inc. (KMS), a world-class developer and manufacturer of innovative membranes and filtration systems, has announced the launch of its new 1500 square meter PURON module for membrane bioreactor (MBR) applications. The improved submerged membrane module features greater packing density, lower energy costs for aeration, and simplified installation while providing even greater compatibility with other commercially available systems.

The PURON MBR modules can now be ordered in configurations with 1500, 500, 235, or 30 square meters of membrane area. The introduction of the new 1500 square meter module is particularly significant because it was specifically designed for large-scale MBR projects. Features such as an optimized permeate extraction manifold and air supply lines reduce the number of piping connections during installation. For additional flexibility, the new product line enables users to easily retrofit the advanced PURON technology into systems with comparably sized modules.

To simplify membrane cleaning and maintenance the central aeration system, a proprietary feature of the PURON module, and the bottom header have both been redesigned. The new aeration system reduces the flow rate during air scouring resulting in a decrease in air usage by up to 20% over the original design.

A key advantage of the patented PURON system is the use of a single header with hollow fibers that are fixed only at the bottom. The sealed upper end of the fibers is allowed to float freely. This eliminates the build-up of hair and fibrous materials that can clog the upper end of membrane fibers in MBR designs that employ both a top and bottom header. Solids and particulates, including bacteria, are retained by the membrane and remain on the outside, while permeate is drawn through the membrane to the inside of the fibers. Outside-to-inside technology such as this provides optimal solids management and a high flow-rate, while using up to 50 percent less energy than other MBR systems.




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