HydroClear: Saltwater Sterilization

Author(s)	Dr. Monali Chaudhary, Krishna Tuwar, Dipanshu Shukla
Country	India
Abstract	Access to safe drinking water remains a critical challenge, particularly in regions where saline water is abundant but unsuitable for direct consumption. Conventional desalination systems often involve high energy consumption, complex infrastructure, and losses due to DC–AC power conversion, limiting their use in small-scale applications. This paper presents HydroClear, a solar-powered water treatment system that converts saltwater into sterilized water using a controlled evaporation–condensation process. The system utilizes a 12 V DC immersion heater powered directly by a photovoltaic panel, eliminating inverter losses and improving efficiency.Automation is implemented using an STM32F401RE Nucleo microcontroller, which operates based on real-time sensor monitoring of temperature, humidity, and water quality (TDS). The system ensures controlled heating, effective condensation, and reliable output with minimal human intervention. The proposed design demonstrates a simple, cost-effective, and energy-efficient solution for small-scale water sterilization, making it suitable for remote and sustainable applications.
Keywords	Solar water treatment, DC heating, sterilized water, evaporation-condensation, STM32 microcontroller, renewable energy systems.
Field	Engineering
Published In	Volume 7, Issue 2, March-April 2026
Published On	2026-04-23

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