Technical Specifications
Complete engineering documentation for B-CRT and ReFlow sanitation systems. Gates Foundation award-winning technology deployed globally.
B-CRT: Blackwater-Circular Reinvented Toilet
The B-CRT represents the most advanced implementation of the Gates Foundation's "Reinvent the Toilet" initiative globally. This containerized sanitation solution integrates complete water treatment, solar power generation, and IoT monitoring into a single deployable unit.
Unit Specifications
40ft B-CRT Container
| Container Size | 40-foot ISO standard shipping container |
| Toilet Cubicles | 6 individual units |
| Daily Capacity | 300+ users per day |
| Treatment Capacity | 2,000-3,000L wastewater daily |
| Initial Water Charge | 10,000 liters (lasts years) |
| Water Recovery Rate | 95-98% efficiency |
| Annual Water Savings | 420,000-600,000 liters per unit |
| Deployment Time | 1-3 months (including site prep) |
20ft B-CRT Compact
| Container Size | 20-foot ISO standard shipping container |
| Toilet Cubicles | 3 individual units |
| Daily Capacity | 150+ users per day |
| Treatment Capacity | 1,000-1,500L wastewater daily |
| Best For | Space-constrained areas |
| Water Recovery Rate | 95-98% efficiency |
| Deployment Time | 2-4 weeks |
| Same Technology | Full 8-stage treatment system |
ReFlow Mini
| Footprint | 8×8 ft (64 sq ft) |
| Toilet Cubicles | 2 side-attached units |
| Daily Capacity | 500-1,000 users per day |
| Power | Solar/Grid hybrid |
| Treatment | Basic on-site treatment |
| Best For | Urban streets, bus stops, parks |
| Deployment Time | 2-3 days |
| Cost-Effectiveness | Grassroot level distribution |
ReFlow Standard
| Footprint | ~15×10 ft (150 sq ft) |
| Toilet Cubicles | 3 units (including 1 accessible) |
| Daily Capacity | 1,000-2,000 users per day |
| Power | Solar primary with grid backup |
| Treatment | Intermediate on-site treatment |
| Best For | Tourist locations, parks, events |
| Deployment Time | 1-2 weeks |
| Customization | Full architectural finish available |
8-Stage Water Treatment Process
Complete wastewater treatment achieving ISO30500-2018 water quality standards. All treatment occurs within the container unit with no external sewage connection required.
Pre-Treatment
2mm screening and solids separation to remove large particulates before biological treatment.
Primary Anaerobic Digestion
2,000L bioreactor for initial organic matter breakdown in oxygen-free environment. Large molecules decompose into smaller compounds.
Secondary Aerobic Treatment
Fine-bubble diffusion aeration for biological oxygen demand (BOD) reduction. Aerobic bacteria further process organic matter.
Membrane Filtration
0.04 micron ultrafiltration removes suspended solids, bacteria, and most pathogens from the water stream.
Advanced Oxidation
UV-C disinfection at 254nm wavelength destroys remaining microorganisms and breaks down trace contaminants.
Activated Carbon Filtration
Removes trace organic contaminants, odors, and improves water clarity through adsorption process.
Mineralization & pH Stabilization
pH adjustment to 6.8-7.2 range and mineral balancing for safe reuse or discharge applications.
Final Disinfection & Monitoring
Final treatment stage with continuous real-time quality monitoring sensors tracking all key parameters.
Water Quality Standards Achieved
Solar Power System
Generation Capacity
- Solar Panels: 9 panels × 450W = 4.05kWp total capacity
- Daily Generation: 16-20kWh maximum yield
- Panel Type: High-efficiency monocrystalline
- Mounting: Container roof-integrated system
Energy Storage
- Battery Type: Lithium Iron Phosphate (LiFePO4)
- Battery Systems: 6 battery modules
- Total Capacity: 20kWh storage
- Off-Grid Duration: 72+ hours continuous operation
- Cycle Life: 3,000+ charge cycles
Power Management
- Daily Consumption: 12-15kWh under normal operation
- Grid Connection: Automatic switchover capability
- Load Management: Prioritization algorithms for critical functions
- Energy Efficiency: 65% reduction vs conventional systems
Off-Grid Capabilities
- Complete Independence: No external power required
- Disaster Ready: Immediate deployment to crisis zones
- Remote Locations: Rural and off-grid deployment
- Backup Systems: Critical function protection
IoT Monitoring System
Sensor Network
- 35+ Monitoring Points per unit
- Water Quality: pH, TDS, turbidity, BOD, COD
- Power Monitoring: Battery level, generation, consumption
- Treatment Monitoring: Flow rates, pressure, temperature
- Occupancy: Infrared motion detection
- Usage Tracking: Entry counters, duration monitoring
Connectivity
- Primary: Multi-redundant 4G/LTE
- Backup: LoRaWAN for remote areas
- Edge Computing: Industrial-grade with redundant storage
- Offline Buffer: 24-hour local data storage
- Security: End-to-end encryption (TLS 1.3)
- Access Control: Role-based permissions
Dashboard System
- Area Executives: City-wide monitoring and KPI tracking
- Operations Managers: Performance analytics, resource optimization
- Unit Operators: Day-to-day maintenance, cleanliness verification
- Public Users: Location finder, availability status
AI Capabilities
- Google Gemini 2.5: Image analysis and reporting
- Predictive Maintenance: Equipment failure forecasting
- Automated Reporting: Daily operational summaries
- Anomaly Detection: Unusual pattern alerts
Sludge Treatment System
Sludge Harmless Disinfection Device
State-of-the-art machine for sludge treatment in the sedimentation process. Processes accumulated sludge after months or years of B-CRT usage.
- Volume Reduction: >90% compared to conventional systems
- Treatment Process: Enzymatic pre-treatment with thermal disinfection (70°C)
- End Product: Class A Biosolids per EPA standards
- Maintenance Cycle: Extraction required only once every 9-12 months
- Zero Discharge: Complete elimination of sewage system dependencies
Sustainability & Revenue Model
Each B-CRT integrates multiple revenue streams ensuring long-term financial sustainability while maintaining circular economy principles.
Point-of-Sale Partnership
6.5m² commercial space generating ₹15,000-25,000 monthly
Advertisement Panels
16m² of premium advertising space across all 4 unit sides plus interior walls
Technology Licensing
Management system extendable to existing infrastructure
Usage Fees
Optional micropayment system with digital processing
Circular Economy Principles
Certifications & Compliance
ISO30500-2018
International standard for non-sewered sanitation systems - first in the world to achieve certification
GB/T18920-2020
Urban wastewater recycling and urban miscellaneous water quality standard (China)
TUV SUD Certified
Independent third-party certification of water treatment performance
Liquid Waste Management Rules 2024
Compliant with Gazette CG DL-E-08102024-257748 dated October 8, 2024
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