DEVELOPMENT OF A SOLAR-POWERED WASTEWATER PURIFYING MACHINE FOR DOMESTIC PURPOSE USING AUTOMATED FILTERING PROCESS

Abstract

Access to safe drinking-water remains a major challenge in many developing regions,where inadequate infrastructure and unreliable electricity supply make water availability difficult. To address this, a solar-powered household water purification system was designed and tested. The system is effective, affordable, and sustainable, particularly for off-grid communities. Water samples collected from different areas of a school compound were analyzed before and after purification according to World Health Organization (WHO) standards. The untreated samples showed high turbidity, slight odor, and acidic pH levels, making them unfit for drinking. After purification,turbidity was reduced below 2 NTU, pH decrease within the recommended 6.5–8.5 range, and both total dissolved solids (TDS) and odor were significantly minimized.The system uses a solar energy setup with a panel and battery powering 12 V DC pump, ensuring continuous water flow. It incorporates three stages of filtration: a ceramic filter, an activated carbon filter, and a tap filter. For automation, an Arduino Uno, microcontroller, relay module, and water level sensor are integrated to control the system. Overall, this solar-driven purification system not only provides potable water but also promotes the use of renewable energy, contributing to better public health and reduced environmental impact.