[Music] my name is Nicolas island membrane bow act and membrane specialist as well as membrane and membrane bericht application specialist interesting part in alfa laval membrane director it is that we have developed a system where we have a very low contra pressure on the permeate side which means that we can operate with very low transmembrane pressure and this way we avoid the compaction of the falling on the membrane and we decrease the cleaning sequence on the module which is very important for the operation and the lifetime of the membrane in the new generation what we have changed it is the construction of the module in order to avoid all the ceilings between the plate and having a more compact system so we will have a high packing density we will have a very tight system and we welding the membrane directly on the spacer with laser and we are welding all the plate together with infrared and this is giving us a complete membrane bioactive block who can be removed in one operation so it is really a big plus to do that and also because we it's much more easy to install because you install a whole block in one time and we put them over each other in a frame and we can also dismount the frame in two part so it is very big step we've taken tear in the new module configuration we looked also on the aeration part because one of the biggest problem for membrane bioreactor is the blocking of the writer so we were looking to find a design for having a non-blocking aerator and that's why we developed as design I write in order to avoid this blockage is a one-string tube who cannot block have never blocked and this will hinder and of course a lot of unequal air distribution on the module with this essay rate we can also have some airflow variation without having the risk to block there it which was not the case before so we can have an air variation between 50 and hundred percent and which is giving us a lot of flexibility in the operation [Music] you