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Water treatment and reuse

Unlocking new sources for water, our hollow fiber nanofiltration membrane technology enables direct treatment of grey water and biologically treated wastewater effluent. Not only does this prevent the discharge of polluting substances such as medicinal residues, pesticides, chemicals, or PFAS in the environment, but also to enable the reuse of the water produced, a powerful concept to save water. Moreover, our direct nanofiltration membranes offers significant saving in terms of energy usage and chemical consumption in comparison to traditional membrane technologies.

Municipal water reuse

Existing wastewater treatment systems struggle to meet ever tightening discharge regulations in particular for a wide range of micropollutants, including pesticides, PFAS, pharmaceuticals, personal care products and endocrine disruptors such as bisphenol A and synthetic hormones (estrogens). When such micropollutants end up in our surface waters they become a growing threat, not only to the aquatic life, but also for the quality of drinking water supplies and thus public health are under pressure.

At the same time water scarcity and water supply stresses are increasing around the globe. Our breakthrough direct nanofiltration membranes are ideally suited for this challenge. They retain pollutants and as a result produce high quality water to be applied for an array of uses. Furthermore, this comes at a significantly reduced CO2 footprint compared to traditional membrane technologies. We see this as an important contributor in addressing global challenges around water quality and scarcity.

Wastewater treatment
Municipal wastewater contains residues of household chemicals, body care products, pesticides and pharmaceuticals such as antibiotics and hormone-like substances. This group of compounds is generally called “micropollutants” and existing conventional wastewater treatment plants based on biological treatment are capable of degrading or removing them. As a result, they are commonly discharged into water bodies, like rivers, causing harm to the fauna and flora of these habitats. Further, these receiving water bodies are often the source of water for drinking water production plants which would similarly pass the micropollutants. Therefore, there is an urgent need to implement new technologies to further treat effluent from conventional wastewater treatment plants.
Wastewater Reuse
Micropollutants present in wastewater constitute one of the great challenges in water treatment. Pharmaceuticals and estrogens, along with personal care products, microplastics and surfactants present in greywater and wastewater effluent could lead to contamination of surface and ground water, soil, and even agricultural products if not eliminated. Many of these pollutants are not removed or even reduced by conventional wastewater treatment plants and therefore further treatment is required. NX Filtration hollow fiber nanofiltration membranes demonstrate high retention of low molecular weight organic compounds (including micropollutants) and are operated at low transmembrane pressures resulting in low operational costs in comparison with conventional membrane technologies.

Read all about how we supported RecoLab with their urban water treatment project

  • Energy
    efficient
  • Low
    fouling
  • Simple
    step
  • Chemical
    free
Filtration objective
Suspended solids and turbidity
Bacteria
Viruses
Protein, colloidal silica and nano plastics
Micropollutants, color, humic acids and selective PFAS
Selective salts, partial softening and PFAS
Cut off
Typical Flux (l/m2h)
MgSO4 rejection (%)
Nano dNF
dNF40
dNF80
 
400Da
800Da
12-25
15-30
>91
>76
Ultra UF
UF010
UF150
 
 
 
 
 
10kDa
150kDa
30-60
50-100
n/a
n/a
Micro MF
MF100
MF500
 
 
 
 
 
 
 
 
100nm
500nm
40-80
40-80
n/a
n/a

Case studies

  • Direct nanofiltration
    NX Filtration supplies its nanofiltration membranes to Forsmark power plant in Sweden
    View case
  • Direct nanofiltration
    Veolia expands pilot testing with NX Filtration’s hollow fiber nanofiltration technology
    Read more
  • Direct nanofiltration
    Removal of micropollutants from municipal wastewater after biological treatment
    View case

Contact

Alejandro Roman
CCO