| # | Requirement | Description | |---|--------------|-------------| | FR‑01 | | Sensor‑based detection of urine flow (capacitive/optical) triggers a one‑way valve that routes urine to a sealed collection tank. | | FR‑02 | On‑site primary treatment | • Straining (coarse mesh) removes debris. • pH adjustment (optional) using safe buffers to optimise downstream processes. • Electro‑chemical disinfection (e.g., UV‑LED + low‑voltage electrolysis) to achieve ≥99.9 % pathogen kill. | | FR‑03 | Nutrient concentration control | Optional ion‑exchange or crystallisation module that can concentrate nitrogen/phosphorus for fertilizer use. | | FR‑04 | Storage & reuse | • Insulated tank (≈10 L for a family‑size unit). • Pump that feeds treated water to a downstream fixture (garden irrigation, flush tank, or external fertilizer sprayer). | | FR‑05 | User interface | • Local : LCD panel with status icons (Collecting, Treating, Ready, Error). • Remote : Mobile app (iOS/Android) showing real‑time metrics, alerts, and maintenance schedule. | | FR‑06 | Safety & fail‑safe | • Over‑pressure relief valve. • Automatic shut‑off if temperature exceeds safe range. • Backup diversion to standard sewage in case of system fault. | | FR‑07 | Data logging & analytics | Store 30‑day history of volume, energy use, and water quality; enable export for compliance. | | FR‑08 | Power management | Operates from mains (120/240 V) with optional UPS battery for uninterrupted treatment. Energy consumption < 30 W (average). | | FR‑09 | Modular design | Separate “collection‑treatment” module and “storage‑distribution” module for easy upgrade/replacement. | | FR‑10 | Compliance | Must meet EPA/USDA “Reclaimed Water” standards (or EU Water Framework Directive equivalents) for the intended end‑use. |
"Piss spew recycle" is non-technical slang. In engineering and environmental science, the proper term is or urine water reclamation . This process recovers clean water from urine for reuse—critical in spaceflight, military operations, disaster zones, and long-term survival scenarios. piss spew recycle
Leo took another sip of his coffee. It tasted slightly more metallic than usual. He didn't think about where it had been five minutes ago. On this ship, yesterday’s waste was tomorrow’s survival. • Electro‑chemical disinfection (e
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| Phase | Duration | Milestones | |-------|----------|------------| | | 0‑2 mo | Market research, user interviews, regulatory scoping. | | Proof‑of‑Concept Prototype | 2‑4 mo | Lab bench setup: flow sensor → valve → UV/E‑cell → water quality testing. | | Industrial Design & Enclosure | 4‑6 mo | CAD models, 3‑D printed housing, ergonomics testing. | | Alpha Unit (Hardware + Firmware) | 6‑8 mo | Integrated PCB, MCU firmware, mobile app MVP, basic data logging. | | Beta Field Trials | 8‑10 mo | Deploy 5‑10 units in homes/offices, collect performance & user feedback. | | Regulatory Certification | 9‑11 mo | Submit to local water‑reuse authorities, obtain UL/CE markings. | | Production‑Ready Design | 10‑12 mo | BOM finalisation, supplier qualification, tooling for injection molding. | | Launch Prep | 12 mo onward | Marketing assets, installation guides, training for service techs. | • Pump that feeds treated water to a