Submerged Membrane Modules provide wastewater treatment.

Press Release Summary:

PURON® Modules are intended for membrane bioreactor treatment of municipal and industrial wastewater. Hollow fiber membranes, 2 mm in diameter, with pore size of less than 0.1 µm, are bundled in single header at lower end. Each hollow fiber membrane filter is sealed at upper end and allowed to float freely. With water flowing from outside to inside of filters, solids and particulates are blocked by membrane and remain on outside, while permeate is withdrawn from inside of fibers.

Original Press Release:

Koch Membrane Systems Offers Puron® Submerged Membrane Modules for Municipal and Industrial Wastewater Treatment

A Cost Effective and Energy Efficient Solution for Membrane Bioreactors (MBR)

Wilmington, MA - Koch Membrane Systems, Inc. (KMS), a world-class developer and manufacturer of innovative membrane filtration systems, offers PURON® submerged membrane modules for membrane bioreactor (MBR) treatment of municipal and industrial wastewater. These technologically advanced membrane modules significantly improve water quality, while utilizing less space than conventional alternatives.

The extremely effective PURON aeration system from KMS ensures optimal solids management, high flow rate and reliable operation, while using up to 50 percent less energy than other MBR systems. Membrane bioreactors with submerged membrane modules are increasingly used for some of the toughest wastewater treatment applications, including sewage treatment for municipalities, and treatment of wastewater for malt beverage, textile, food, paper and chemicals industries. By using MBR to recycle process water, industrial companies cut wastewater disposal costs and reduce consumption of fresh water.

A proprietary feature of the PURON module from KMS is the air nozzle, which discharges air from the center of each fiber bundle at the base. The combination of rising air bubbles, the resulting hydraulic cross flow and the seaweed-like movement of the membrane filters comprise an energy efficient process that ensures that even sludge, hair and other fibrous components are dislodged from the membranes and moved safely out of the system.

The patented design of the PURON membrane module provides reliable removal of filtered substances. Hollow fiber membranes, 2 mm in diameter, with a pore size of less than 0.1 micrometers (μm), are bundled in a single header at their lower end. Each individual hollow fiber membrane filter is sealed at the upper end and allowed to float freely. The membrane is coated on a braid increasing the mechanical strength of each fiber to ensure that the fibers will not break or delaminate during operation. Water flows from the outside to the inside of the filters. Solids and particulates, including bacteria, are blocked by the membrane and remain on the outside, while permeate is withdrawn from the inside of the fibers.

About Koch Membrane Systems
For over 30 years, Koch Membrane Systems, Inc. (KMS) has been a global leader in the development, manufacturing, distribution, and service of state-of-the-art membranes and systems for large-scale uses in a broad range of industries. KMS membrane filtration and separation products are installed in more than 15,000 systems around the world, serving the food processing, life sciences, general manufacturing, water purification and wastewater treatment needs of various industries and municipalities. Standard industrial uses of KMS innovative products include whey processing, juice clarification, paint and pigment recovery, potable and bottled water filtration, ultrapure water production, enzyme concentration, pulp and paper treatment and oil/water separation processes.

Headquartered in Wilmington, Massachusetts, Koch Membrane Systems is a member of Koch Chemical Technology Group, LLC. For more information on Koch Membrane Systems and its full line of membranes and accessory products, visit, call 888-677-5624 or write to

PURON® is a registered trademark of Koch Membrane Systems GmbH.

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