How It Works

Simple, proven science. No electricity. Just gravity and natural materials.

Biovara 4-Stage Filtration System - 3D Render showing all four containers with sensors and monitoring displays
The System

Complete 4-Stage Filtration Unit

Our modular design uses four interconnected containers, each performing a specific purification function. Real-time sensors monitor water quality at every stage, while digital displays provide instant feedback on system performance.

  • Modular Design: Easy to build with locally available materials
  • Real-time Monitoring: Sensors track turbidity and flow rates
  • Visual Feedback: Digital displays show system status
  • Gravity-Powered: No electricity required for filtration
The Process

Four-Stage Gravity Filtration

Contaminated Water
1

Gravel Layer

Removes large debris and sediment

2

Biosand Filter

Biological layer removes pathogens

3

Neem-Biochar

Absorbs chemicals and remaining contaminants

Clean Water ✓
1

Stage 1: Gravel Roughing

The first stage uses gravel roughing to remove large sediments, organic debris, and particulate matter, protecting downstream layers from rapid clogging.

  • Material: Locally sourced, washed gravel
  • Size: 6-12mm particles
  • Function: Pre-filtration and layer protection
2

Stage 2: Slow Sand Biofilter

A naturally forming biological layer reduces pathogenic organisms through predation, adsorption, and microbial competition. This WHO-recommended technology develops over 2-3 weeks of continuous use.

  • Material: Fine sand with biological layer
  • Removal: Bacteria, protozoa, and some viruses
  • Efficiency: Up to 99% pathogen removal
3

Stage 3: Neem-Infused Biochar

Biochar adsorbs heavy metals, antibiotic residues, and remaining microbial contaminants. Neem introduces natural antimicrobial properties without synthetic chemicals, enhancing purification.

  • Material: Locally produced biochar + neem infusion
  • Removal: Heavy metals, chemicals, antibiotic residues
  • Replacement: Once per year
4

Stage 4: Sealed Storage

Treated water is stored in a sealed chamber to prevent recontamination. This ensures that purified water remains safe from environmental pathogens until consumption.

  • Material: Food-grade sealed container
  • Function: Prevents recontamination
  • Capacity: Configurable based on daily needs
Failure Prevention

AI-Guided Setup & Maintenance

What differentiates Biovara from traditional gravity filters is its ability to adapt to real-world conditions. Our AI actively prevents the two most common causes of breakdown: incorrect setup and neglected maintenance.

AI Prevention System:

NTU Turbidity Detection
CFG Setup Guidance
PRD Failure Prediction
MNT Maintenance Alerts
Use AI Assistant →
AI Analysis
→ Analyzing water sample...
→ Turbidity: Medium
→ Recommended settling: 2 hours
→ Flow rate: 0.6 L/min
✓ Optimization complete!
Proven Results

Lab-Validated Performance

300
Liters/Day
Purification capacity
>99%
Removal
Pathogens eliminated
$50-100
Total Cost
Per complete unit
460
kg CO₂e/Year
Emissions saved vs. boiling
Getting Started

Simple Setup Process

1

Gather Materials

Collect recycled HDPE barrel, local gravel, sand, biochar, and neem leaves.

2

Use AI Tool

Enter your water conditions to get optimized layer ratios for your region.

3

Assemble Layers

Stack gravel, biosand, and biochar layers in the barrel according to specifications.

4

Season the Filter

Run water through for 2-3 weeks to develop the biological layer.

5

Enjoy Clean Water

Your filter is ready! Use the AI maintenance tool to keep it running optimally.

Ready to Get Started?

Try our AI tools to analyze your water and optimize your filter.

Use AI Assistant →