Spew Recycle 2021 — Piss

Urine contains high concentrations of essential plant nutrients, including , phosphorus (P) , and potassium (K) . While it makes up only about 1% of the total volume of domestic wastewater, it contributes approximately 80% of the nitrogen and 50% of the phosphorus found in sewage.

| Consumable | Lifetime | Replacement Method | |------------|----------|--------------------| | Mesh pre‑filter | 6 months (based on load) | Snap‑in cartridge, tool‑free | | UV‑LED module | 12 months (degradation) | Twist‑out module | | Electrolysis plates | 12 months | Clip‑on cartridge | | pH buffer cartridge | 3 months (optional) | Slide‑in pod | | Battery (UPS) | 24 months | Plug‑in external pack | piss spew recycle