Not all polyurethanes are the same! NORRES uses a special polyurethanes mixture that is differentiated with the name Pre-PUR for several of its conduits. Our Pre-PUR raw materials are distinguished from many of the membrane materials commercially available.Enquiry Now
Membrane Tube Diffusers quality products from the NORRES stable – are mainly used for intermittent, fine-bubble, compressed air aeration (nitrification/deni-trification.) Our membrane material exhibits very good resistance to municipal and industrial wastewater.
High potential saving compared to other, similar aeration systems
The low resistance to permanent kinking and insufficient tear propagation strength of many conventional diffusers can lead to premature cracking under dynamic loads. The performance of the aeration system is significantly as a result. Pre-PUR membrane tube diffusers are characterised by a very high tear propagation strength and far superior resistance to permanent kinking. The operational reliability and hence the performance of the aeration system are greatly enhanced.
Oxygen supply capacity/yield refer to full floor aeration with an arrangement density of 13% and a below-in depth of 3.84m. Measured in clean water according to DWA-M 209. The efficiency and reliability of NORRES membrane tube diffusers can be increased by optimising and adapting the operating parameters. The permanent elasticity of the membrane has a crucial influence on the uniformity of the opening characteristic of the slit perforation over the full operating range. This in turn ensures a largely constant performance of the fine-bubble, compressed air aeration system.