Automated Water Sampling and Chlorine Dispenser (2023 Spring)
The Challenge
Over 80% of Nepalese households are at risk of water contamination, but manual cleaning methods like boiling are time-consuming and expensive. While identifying bacteria is a good first step, the water must eventually be cleaned to make it safe for consumption.
Our Solution
A TU Delft researcher integrated the PRI optical sensor into an automated system that both samples water and dispenses chlorine. The device detects bacteria in real-time and automatically injects a precise dose of chlorine into rooftop storage tanks with high accuracy.
How It Works
Rooftop water tanks are common throughout Nepal. The product acts as quiet “infrastructure” for the home, similar to a computer server, meaning it runs automatically without needing any user intervention. It uses 3D-printed pumps designed to be produced locally.
The Outcome
This system brings the safety and experience of an industrial water treatment plant to a single home. It provides families with safe, purified water automatically, reducing the time and health risks associated with contamination.