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In this paper, we present the design and development of a low-cost sewer gas monitoring system using MQ gas sensors and an Arduino Mega microcontroller. Real-time sewer gas monitoring is essential for maintaining public health and safety. A large class of citizens living and/or working in the vicinity of sewer canals are prone to various health issues and financial setbacks. This research paper additionally conducts a survey to comprehend the impact of sewer gas on diverse factors associated with productivity and the economy. The findings underscore the necessity for the development of an affordable handheld device for promoting health awareness. The suggested system in this paper provides an efficient and reasonable solution to monitor gas levels and indicate possible health hazards. The concept and execution of the system, including sensor selection, circuit design, and microcontroller programming, which are explained in depth. Experimental results confirm the system's precision and dependability in detecting harmful chemicals often found in sewer gas, such as methane and hydrogen sulfide. The system's potential uses in other contexts, including residential buildings and wastewater treatment facilities are also covered in the article. Overall, this research helps to create accessible, affordable tools for environmental monitoring and safeguard public health.
K. Jain (Tue,) studied this question.