Why did you choose a membrane bioreactor (MBR) solution for the Bassussarry wastewater treatment plant?
“Because the outfall of treated wastewater at Bassussarryflows into a river where there is a lot of sporting activity. Also the river is a resource for drinking water production, so having the cleanest possible treated water was absolutely fundamental. This was only possible through an MBR treatment solution. “The quality of the outfall is extremely high, and the system is reliable, easy to operate and simple to install. Moreover, when legislation regarding the removal of traces of xenobiotics such as prescription drugs or pesticides from treated water is introduced, MBRs will be indispensable prior to installing any system to remove them.”

Why opt for an Alfa Laval MFM Hollow Sheet Membrane for the project?
“Alfa Laval membranes are gravity operated, so fouling is reduced to a minimum, as the pressure is much lower across the surface. They are very simple to install, can be cleaned in place and are unaffected by the chlorine used in periodic cleaning phases. “Another key driver in our choice of Alfa Laval is the level of service. The upgrading of the Bassussarry plant was a dynamic three-way project between our client, ourselves and the supplier, and we all worked very closely together, which made it a real success. You can’t put a price on a strong and dependable relationship with your key suppliers.”

With hindsight, are you pleased with the installation?
“Ten months on and everybody is very happy, from the local authority to the engineers and from the constructor to the operator. The solution is so efficient that in the latest analysis of treated water outfall, all key measurements were well below European norms, and biological analysis showed a total absence of bacteria. This means the plant can sell that water to a nearby golf course for watering, and there is absolutely no harm done to the local environment.”

Would you use Alfa Laval membranes again?
“We currently have eight ongoing projects using Alfa Laval membranes. An MBR solution is always our first choice, both for its efficiency and because it makes sense regarding any future legislation, and Alfa Laval is offering the best product that is best adapted to current market needs."