International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 13 Issue: 03 | Mar 2026
p-ISSN: 2395-0072
www.irjet.net
SMART WASTE SEGREGATION SYSTEM KEERTHANA R, RESHMA K, Mr. K.R.MOHAN RAJ 3Mr.K.R.Mohan Raj, asst.Professor, Department of Information Technology, Velammal Engineering college, Tamil
Nadu, India ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - In recent days, managing household waste has become a major challenge due to the increasing population and
improper waste disposal practices. Our Smart Waste Segregation System aims to improve waste management by automatically identifying and separating different types of waste using simple sensors and a microcontroller. The system uses an IR sensor to detect waste entry, a metal detection sensor to identify metal waste, and a raindrop sensor to distinguish between wet and dry waste. Based on these inputs, the system processes the data and uses servo motors to direct the waste into the appropriate bins without any manual intervention. A 16×2 LCD display provides real-time information about the waste type and system status, making it user-friendly. The system is powered by a lithium-ion battery, ensuring portability and continuous operation. This approach not only reduces human effort but also improves waste segregation efficiency, leading to better recycling practices. By promoting proper waste disposal at the source, the system contributes to a cleaner environment and supports sustainable waste management solutions in households and small-scale applications. Key Words: Smart Waste Segregation, Arduino Nano, Sensors, Automation, Recycling, Servo Motor.
1. INTRODUCTION In recent years, improper waste management has become a serious environmental concern due to rapid urbanization and increasing population. A large amount of household waste is generated daily, and in many cases, it is not properly segregated at the source. Traditional waste segregation methods rely heavily on manual effort and public awareness, which often leads to mixing of wet, dry, and metal waste. This reduces recycling efficiency, increases environmental pollution, and makes waste processing more difficult. To address these challenges, a Smart Waste Segregation System is proposed to provide an automated, efficient, and low-cost solution for waste classification and disposal. The system uses an Arduino Nano as the main controller along with simple sensors to detect different types of waste. It automatically identifies waste and directs it into the appropriate bin without human intervention. This approach minimizes errors, improves efficiency, and promotes proper waste management practices. 1.1 Automated Waste Segregation One of the key features of this system is its ability to segregate waste automatically. When waste is placed into the system, an IR sensor detects its presence and activates the process. The system then analyzes the waste using other sensors and determines its category. Based on the result, the waste is directed into the correct bin using servo motors. This reduces the need for manual segregation and ensures better waste management at the source. 1.2 Sensor-Based Waste Detection The system uses multiple sensors to accurately identify waste types. A metal detection sensor is used to detect metallic objects such as cans and metal pieces. If no metal is detected, a raindrop sensor checks the moisture content to determine whether the waste is wet or dry. This combination of sensors improves the accuracy of classification and ensures proper separation of waste materials. 1.3 User-Friendly Display and Operation To make the system easy to use, a 16×2 LCD display is integrated to show real-time information about the detected waste type and system status. This helps users understand how the system is working. The system is powered by a lithium-ion battery, and an LM7805 voltage regulator ensures a stable power supply for smooth operation.
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