Surat Municipal Corporation Achieves Unified Plant Control, Integrating Complex Custom Hardware at Amroli STP

The Surat Municipal Corporation (SMC) is the governing civic body responsible for the administration and infrastructure of Surat, one of India’s largest and most dynamic cities. A key part of its mandate is managing critical public utilities, including state-of-the-art facilities like the Amroli Sewage Treatment Plant (STP).

While the Amroli STP was equipped with modern machinery, its control systems were fragmented. Operators had to work with multiple, disconnected interfaces to manage the plant. This created operational silos, increased the potential for human error, and prevented a holistic, real-time view of the entire treatment process, hindering efficiency and coordinated control.

We proposed the development of a custom supervisory control software solution built on a modern and reliable technology stack. The strategic core of our approach was to create a powerful backend service in C# capable of acting as a universal translator — managing the low-level communication logic for both the standard Modbus protocol and the complex custom protocol, abstracting this complexity away from the user interface. A dynamic web-based front-end built with React and Node.js would then present this unified data in an intuitive command center for the plant operators.

Our process began with an intensive on-site analysis of the Amroli STP’s hardware and network architecture. Our primary task was to decode the proprietary protocol, working closely with SMC’s engineers to understand the device’s operational logic and data structure. Once we established a stable communication channel, we engineered the C# backend to continuously poll data and execute commands for both device types. We then designed and built the user-facing application, focusing on clear data visualization and intuitive controls. The entire solution was deployed and rigorously tested to ensure flawless, uninterrupted communication and control over the entire plant.