Gray water
Carbon
dioxide
Pre-digested waste
Water vapor
Fouled carbon
dioxide
Food
About 50% of one person's food could be grown, reducing reliance on Earth for supplies.
Filter
Condenser
Microbial composter
Bioreactor/
Toilet
Greenhouse
Food
Hydroponic salts
Crew water use
Solid and liquid waste
Crops help reuse 100% of water through transpiration while growing food and refreshing air.
Water
Condenser
Greenhouse
Filter
Crew water use
Waste water
Clean water
Gray water
Gray water
Water vapor
Water vapor
Microbial composter
Condenser
A single greenhouse unit would fulfill 100% of a crew member's oxygen needs.
Air
Filter
Greenhouse
Microbial composter
Crew
Carbon dioxide
Oxygen
Carbon dioxide
Fouled carbon dioxide
Pre-digested waste
Plant waste
Crew waste
Bioreactor/
Toilet
Food
Water
Air
Click the buttons to see how astronauts might survive for years on another world