Three-Step Technology in One Product

Hydromars participates with leading Institutes and multinationals in several European research programs to separate different types of wastewater into absolutely pure water

Hydromars device is a complete system for water purification and resource recovery in extraterrestrial environment based on hydrophobic membrane based thermal pervaporation. The technology extracts highly pure potable water from all liquid water feeds to enable life support and auxiliary applications like in-space science and manufacturing. Alongside, a material-rich retentate containing nutrients and precious elements is made available for reuse, enabling complete material circularity.

Hydromars’ process harnesses the natural phenomenon of evaporation and condensation. It works at the molecular level salvaging water molecules through a hydrophobic membrane, which only lets vapor through, and all non-volatiles are contained by the surface tension of the water, resulting in water free from nanoparticles.

Through decades of pioneering research and successful tests on Earth, Hydromars proposes a system based on 3 different steps: Thermal Pervaporation to produce ultrapure water, gas separation to remove all volatiles, crystallization to concentrate sludge/ nutrients and separate remaining water.

Technology is patented with 12 international equivalents. A separate patent was filed in 2022 on Hydromars’ current pilot for methods of purifying water specifically in microgravity conditions.



High Separation Efficiency

Maximizing on thermal pervaporation phenomenon, this single-step cleaning within the unit provides separation efficiency of >95%



Modular system suited for rapid scale-up to accommodate water requirements for a range of manned space missions


Easy Integration

With simple process and minimal inputs, this unit could be easily coupled into space shuttles’ Water recovery systems and could operate as retrofitted or stand-alone solution


Dynamic Operations

The unit is designed to clean a range of waste feedwater streams, suitable for providing flexibility to life support systems’ operations in space


Sustainable & Safe Process

Higher pure water recovery rates producing less sludge and free from chemicals or precious elements. Unit is not pressurized or have high operating temperatures eliminating safety risks


Reduced Service & Maintenance

Robust system with minimal moving parts and no parts’ replacement requirements limiting the need of extensive service & maintenance activities


Reduced Process Complexity

Considering ISS’s Water recovery system, generation of potable water at the station could be reduced to simpler 7-8 steps as compared to current 11-12 steps


Compact Design

Offering smaller footprint and with few hardware components, this unit caters for both area and weight limitations necessary for space missions

Test results

Test for Amount Method Limit Test by Result
Chlorine 3.4 mg/l Photometric analysis (Perkin Elmer) 0.01 mg/l Water Protection Association of South West Finland BDL
Salt water 31 ppm Ion chromatography 1 ppm VBB Viak Stockholm BDL
Cesium, Strontium, Plutonium, Radium 2.4 Bq Lithium Drifted Germanium Detector 0.1 Bq Radiation Physics Department, University of Lund BDL
Arsenic +3 10 mg/l AAS Graphite 0.003 mg/l Analytica AB, Stockholm BDL
Arsenic +5 10 mg/l AAS Graphite 0.003 mg/l Analytica AB, Stockholm BDL
Ag nanoparticles 3100 μg/l HPLC 2 μg/l IVL Swedish Environmental Research Institute BDL
SiO₂ 10 μg/l AAS 5 μg/l Vattenfall AB, Stockholm BDL
Setralin and other pharmaceuticals 4 ng/l HPLC 0.8 ng/l IVL Swedish Environmental Research Institute BDL
Radon 380 Bq/l Alfa detection 4 Bq/l Swedish Radiation Protection Institute BDL
Bacteria 14000 Membrane filter count Membrane filter count 0 Membrane filter count National Bacteriologic Laboratory, Stockholm BDL
Trihalomethanes 1 μg/l Gas chromatography 1 μg/l University of Turku BDL