WO WO2021148542A1
Disclosed is a water purification system for solar water disinfection, an electronic device for estimating a water disinfection state in a water purification system and a method for estimating a water disinfection state in a water purification system. The water purification system comprises a container configured to receive water to be purified and an electronic device. The electronic device comprises a photovoltaic component configured to receive incident visible light and to provide a photovoltaic output indicative of a visible light intensity at the photovoltaic component to a processor. The processor is configured to determine a dose equivalent of UV light transmitted through the container based photovoltaic output and optionally a temperature to determine a water disinfection state based on the dose equivalent and the temperature and to send a first indicator signal indicative of the water disinfection state to a purification status indicator.
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