We got it covered.
The membrane is often considered an MBR’s Achilles heel, but Blue Foot has the solution. A wastewater plant should always be reliable and easy to operate, as business continuity depends upon it. It should also be economically viable, with attractive OPEX and CAPEX. Blue Foot offers an optimal performance and reliability over time. Here’s how.
The only flat sheet membrane that is truly backwashable.
Backwashing is essential for reliable membrane operation, but almost impossible in most submerged membrane systems. Flat sheet membranes are especially prone to immediate damage when backwashed, rendering this short but very effective hydraulic cleaning method useless.
Blue Foot has developed the world’s only flat sheet membrane that is truly backwashable, making it easy to clean. Due to its unique composition, the IPC™ membrane can withstand a backwash pressure of up to 2 bar. This enables maximising plant uptime and operating flux.
Twice the flux rate compared to competing products.
The flux rate of a membrane is the amount of clean water that passes through per square meter of membrane surface per hour, expressed in ‘lmh’. Typical values range from 10 – 20 lmh, making it necessary to install a vast membrane area.
Our IPC™ membrane sets itself apart through a high continuous flux rate. This is the result of a number of factors: the PVDF membrane material, its true UF morphology and average pore size of 0,04 μm, as well as the ability to backwash. This allows us to achieve twice the flux rate of most competing products.
50% aeration compared to most competing systems.
Aeration is an integral part of any MBR operation. The aeration demand accounts for the majority of the energy consumption of an MBR.
Most submerged systems require an aeration rate of 8 – 20 Nm3 of air for every m3 of filtered water. Extensive tests and long-term operational installation data indicate that the aeration rate of the Blue Foot module is the lowest in the market by far. The modules typicaly use 5-8 Nm3 of air for every m3 of filtered water. Due to the high design flux, the aeration rate per m3 of filtrate produced is significantly lower. So they require approximately 50% of the aeration of most competing systems.
This translates into an immediate benefit in terms of both CAPEX and OPEX. Since the blowers only need to deliver 50% of the required air at the same pressure, the installation costs for the blower section are significantly lower. In addition, half the power is required to drive the blowers.
Competitive performance: Specific Aeration Demand per m3 water treated
1,5 to 3 times smaller than competing systems.
For any submerged system the design flux, physical configuration of the membrane modules and the placement of the modules inside a basin determine the required footprint for a specific installation capacity. Most contemporary submerged systems accommodate 100 – 200 m2 of membrane area per m2 of tank footprint. Some capillary systems go up to 300 m2 per m2 of tank footprint. However, their relatively low design flux forces the need for a large membrane area to be installed, resulting in a filtrate capacity of 2-4 m3/h per m2 tank footprint.
Due to its triple deck design and compact modules, the Blue Foot modules have a high packing density of 230 -260 m2 of membrane area per m2 of tank footprint. Combined with the high design flux, the result becomes clear: our modules produce between 6 (nominal) and 10 (peak) m3/h per m2 of tank footprint. In other words: 1,5 to 3 times smaller than others.
Competitive performance: Permeate flow per m2 footprint
What makes our membrane unbreakable?
With the patented IPC sheet and module construction, the membrane layer is integrated into the 3D backing material without the need to weld or glue. This creates an inherently unbreakable bond that makes the membrane almost indestructible and sets Blue Foot apart.
The impressive performance is only one side of the story. The best-in-class technology serves a higher purpose. It offers our partners and customers reliable technology that works flawlessly and that is attractive from a financial and operational point of view. Why not design your new installation with the best membrane proposition in the market?