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Clean Water Filter & Smart Turbidity Quality Lab

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Build a multi-layer water filter column (gravel, coarse sand, fine sand, activated charcoal). Pass muddy water through, then test water clarity using an optical LED light turbidity sensor.

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Props & Materials Required

  • •Clear plastic 3-tier filter column
  • •Filter materials: Pebbles, coarse sand, fine sand, activated charcoal, filter paper
  • •Dirty muddy water sample
  • •TS-300B optical water turbidity sensor module
  • •ESP32 controller board
  • •0.96-inch OLED display
  • •DFPlayer Mini MP3 module + 3W speaker

Step-by-Step Instructions

1

Build Filter Layers

Layer materials in the column from top to bottom: Pebbles (large debris), Coarse Sand, Fine Sand, Activated Charcoal (smell/color), Filter paper.

2

Pour Dirty Water

Pour murky muddy water into the top. Watch water slowly trickle down through each layer.

3

Collect Cleaned Water

Observe clear water dripping out of the bottom spout into a glass!

4

Smart Turbidity Light Sensor Check

Place purified water into the optical turbidity sensor chamber. Infrared light shines through liquid. Speaker announces: 'Turbidity: CLEAR! 95% dirt removed! Water is clean!'

Why It Works & Notes

Water purification requires filtering particles of different sizes. Passing dirty water through physical filter layers and testing clarity before/after with an optical turbidity light sensor proves that filtration removes suspended dirt.