Urine contains roughly 80% of the nitrogen and 50% of the phosphorus found in municipal wastewater. The Rich Earth Institute has pioneered "peecycling" initiatives. They process raw urine via pasteurization to eliminate pathogens, creating an eco-friendly fertilizer that replaces energy-intensive synthetic options. Emesis and Biological Wastewater Valorization
Resource scarcity requires radical solutions. The phrase sounds crude. However, it captures the foundational mechanics of closed-loop life support systems. It describes the collection, processing, and reuse of metabolic waste.
Only flush Pee, Poop, (Toilet) Paper, and Puke [8, 10].
DPR eliminates the environmental buffer entirely. Wastewater is treated at an advanced reclamation facility and introduced directly into the municipal drinking water distribution system or sent straight to a traditional water treatment plant.
On the International Space Station (ISS), the Environmental Control and Life Support System (ECLSS) achieves a water recovery rate of over 98%. The system distills urine and moisture from sweat into water that is purer than municipal tap water on Earth. This technology provides a functional blueprint for drought-prone terrestrial cities. 3. Decentralized Sanitation Systems piss spew recycle
The Groundwater Replenishment System (GWRS) in Orange County is the world’s largest system for indirect potable reuse. It processes hundreds of millions of gallons of wastewater daily. Instead of releasing treated sewage into the Pacific Ocean, the facility purifies it to near-distilled quality and pumps it into local underground basins, protecting the region from catastrophic drought and saltwater intrusion. Windhoek, Namibia
The water is pulled through thousands of hollow-fiber membrane straws. These membranes have microscopic pores (ranging from 0.02 to 0.1 microns). As water passes through, suspended solids, bacteria, protozoa, and large clusters of viruses are physically trapped and separated from the stream. Step 3: Reverse Osmosis (RO)
The resulting fluid is cleaner than municipal tap water on Earth and is reused for drinking, food preparation, and oxygen generation via electrolysis. Terrestrial Implementation and Infrastructure
Even knowing the science, many people recoil at drinking water that was once vomit or urine. Engineers and psychologists have studied this extensively. On the ISS, astronauts report that the recycled water tastes “like bottled water” and they quickly overcome any squeamishness—especially when their alternative is a dehydrated death in the vacuum of space. For Earth applications, branding helps. Terms like “reclaimed water,” “greywater,” or “bio‑recovered water” are used instead of “recycled vomit.” Urine contains roughly 80% of the nitrogen and
The evaporated water vapor is condensed and passed through catalytic oxidation reactors. This process destroys volatile organic compounds and bacteria.
Continuous digital monitoring ensures instant shutdown if anomalies occur.
Beyond urine, sewage sludge can be converted into biosolids for farming or treated to produce struvite, a valuable phosphorus fertilizer. Environmental and Economic Benefits Recycling urine and wastewater offers a triple bottom line:
Manages the world’s largest water reclamation plant, cleaning billions of gallons of wastewater for human use. 3. "Spew Recycle": Reclaiming Industrial Waste It describes the collection, processing, and reuse of
Short, punchy, and aggressive for stickers, posters, or social media. Consume the waste. Purge the excess. Loop the system.
As the microbes consume the organic components, they release electrons, generating a clean electrical current. In the near future, wastewater treatment plants could become entirely self-powered, generating electricity while simultaneously purifying water. To help explore this topic further,
Once neutralized and sterilized, the remaining organic carbon compounds can be introduced to anaerobic digesters. Microorganisms break down the matter to produce biogas (methane), which can be burned for electricity or heat. Beyond Earth: Closed-Loop Aerospace Life Support
from cities currently utilizing recycled wastewater