Brightwork with innovative purification technique successful in Innovation Program Micropollutants of STOWA and the Ministry of Infrastructure and Waterways

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Brightwork with innovative purification technique successful in Innovation Program Micropollutants of STOWA and the Ministry of Infrastructure and Waterways

Drug residues in surface water are an increasing source of concern. Water boards contribute to this by discharging treated wastewater. Therefore, the Innovation Programme Micropollutants (IPMV) has been set up. Stowa coordinates this programme and aims to develop purification techniques which remove medicine residues from waste water.

Large-scale modular filter design
Large-scale modular filter design

Brightwork was successful in the second call of this program. As one of the 4 proposals out of a total of 28 submissions of new promising purification techniques, Brightwork was selected for further research.

Brightwork's solution is a combination of adsorption and biological conversion in a proven filter concept. For this purpose continuous filtration is used at the end of the post-sedimentation phase. The filter is filled with granular activated carbon as adsorption medium. An additional controlled aeration ensures that biomass can grow on the filter material. The result is an extension of the active carbon's service life. This means the carbon needs to be regenerated less frequently. This increases the CO2 footprint.

The process can also be used to remove phosphate simultaneously. This creates a multifunctional solution for the removal of micro-pollutants and nutrients. This fits in with the measures for the Water Framework Directive.

Several water boards have since indicated that they are interested in the proposed solution.

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