About us
- Water pollution
- Biofouling
- Biofilm removal
- Phosphate removal
- Reverse osmosis
- Reservoir souring
- Bacterial contamination
- Arsenic


Biological fouling (biofouling) is the accumulation of algae, plants, animals, or microorganisms on wetted surfaces. In case of bacterial adhesion and biofilm formation, this process is called microfouling. In water treatment, biofilms develop when bacteria grow under favorable conditions (e.g. temperature, nutrients, and sunlight). This form of biofouling causes severe operational problems and increased costs.

Membrane fouling

When a biofilm develops on reverse osmosis (RO) membranes of a water treatment system, this is called membrane biofouling. This form of fouling restricts the flow of water through the RO membrane. As a result the pressure inside the system will increase, which leads to increased system costs and irreversible damage to the RO membrane. BiAqua has developed a solution that prevents membrane biofouling and prolongs the lifetime of RO membranes by more than 10 times the original lifespan.

Preventing biofouling with BiAqua PRT™

Our adsorption technology is bio-based and is the perfect solution for problems that concern membrane fouling. The sustainable BiAqua Phosphate Removal Technology (PRT™) is designed to remove phosphate from water, which is a vital nutrient for bacteria. BiAqua PRT™ reduces phosphate levels in water to below 1-2 ppb. At these levels, bacterial growth is prevented and as a result biofilm formation is inhibited.

Prevent biofouling with BiAqua PRT

BiAqua PRT™ pretreatment

In reverse osmosis, BiAqua PRT™ is applied in the pretreatment stage. The solution is unique, as it prevents biofouling instead of curing it. When BiAqua PRT™ is implemented as pretreatment, laboratory and pilot tests have proved a 10-15x delay in the appearance of biofouling on RO membranes compared to non-treated feedwater. Because of these impressive results, we believe that our Phosphate Removal Technology can be of incredible value for water treatment plants. For instance, the lifetime of RO membranes will significantly increase, energy consumption will be reduced, downtime will be minimized and the use of chemicals, and biocides can be kept at a minimum. Altogether resulting into a significant cost reduction in the process of water treatment.

We believe that the applications of BiAqua PRT™ reach further than RO membranes alone. Our Phosphate Removal Technology can also be of use in the prevention of biofouling in cooling towers, water distribution networks, and horticulture systems. Feel free to contact us for information about BiAqua PRT™ with regards to your specific needs.


2 28-05-2015 Vacancy: Process Field Engineer


2 20-08-2014 BiAqua featured in Water Desalination Report.

2 13-08-2014 BiAqua appoints OrangeBoat as technology ambassador.

2 13-06-2014 BiAqua’s founding father awarded the 2014 NWO Spinoza prize

2 23-05-2014 BiAqua’s first pilot-test results gain recognition at the EDS conference Cyprus

2 6-11-2013 BiAqua’s technology preventing biofouling in pilot at WLN

2 29-10-2013 BiAqua’s solution against biofouling and phosphate contamination will be launched at Aquatech 2013

2 29-10-2013 BiAqua technology proves able to guarantee 10x delay in biofouling appearance when applied to RO membranes pretreatment

2 14-10-2013 BiAqua will be present at Aquatech 2013

2 30-9-2013 BiAqua and Eucodis bioscience scale up enzyme production

2 6-9-2013 BiAqua and WLN form partnership to develop PRT technology

2 13-9-2012 BiAqua in Artemis top 50!

2 1-7-2012 Visit BiAqua at the SIWW'2012

2 7-05-12 BiAqua presents at DSM Webinar on outsourcing development for industry ingredients

2 29-03-12 BiAqua founding father wins Lee Kuan Yew Water prize

2 15-03-11 Biaqua Ferritin validated for its adsorption capacity to remove > 99.95% of 32P (i.e. < 1 ppb)

2 31-08-09 Icos Capital invests in TU Delft water spin-off

5 31-08-09 Icos Capital investeert in watervinding TU Delft