Namami Gange Programme | Uttar Pradesh & West Bengal | 51 STPs | 102 OCEMS Sets | 5-Year O&M
The Project
Aaxis Nano Technologies completed the supply, installation and commissioning of Online Continuous Effluent Monitoring Systems (OCEMS) across 51 Sewage Treatment Plants (STPs) in the Ganga River Basin, spanning Uttar Pradesh and West Bengal. Completed in 2025, the project combines continuous water-quality measurement with field data acquisition, digital connectivity and sustained technical support.
A Regional Monitoring Infrastructure
The deployment comprises 102 OCEMS sets across 51 STPs, with two monitoring systems installed at each
plant—one at the inlet for influent monitoring and one at the outlet for treated-effluent monitoring.
Aaxis Nano’s scope covered supply, installation, testing, commissioning, trial operation and five years of comprehensive operation and maintenance, establishing standardized OCEMS infrastructure across multiple locations in Uttar Pradesh and West Bengal.
Instrumentation Behind the System
The field architecture integrates specialized instrumentation for measurement, analysis and communication. ph::lyser provides continuous pH measurement, while spectro::lyser enables UV-VIS spectral sensing for multi-parameter water-quality analysis. ammo::lyser supports online ammonium (NH₄- N) and ammonia measurement, while con::cube manages system control, data processing and communication.
Continuous Measurement of Critical Parameters
The installations measure Flow, pH, BOD, COD and TSS, with designated Category-I installations additionally covering Ammoniacal Nitrogen and Nitrate Nitrogen.
The systems incorporate multipoint calibration, automatic water-matrix adaptation and data-validation capabilities to support reliable analytical performance.
From Field Data to Centralized Visibility
Data generated at individual monitoring stations is connected to central infrastructure, supporting raw and validated data transmission, multi-server connectivity, remote system access and two-way communication.
GPS-based station identification, operational logs, and calibration and validation records provide additionalvisibility into system status and data quality.
Sustaining Performance Beyond Commissioning
The connected monitoring network is supported by five years of comprehensive operation and maintenance, extending Aaxis Nano’s involvement beyond commissioning and providing continued technical support throughout the O&M period.
The Outcome
The 51-STP OCEMS network brings continuous water-quality information from geographically distributed treatment plants into a connected monitoring framework. This enables centralized access to field data, validated measurements and system status, strengthening real-time visibility and supporting sustainedmonitoring of treated-effluent quality across the Ganga River Basin.
Aaxis Nano Technologies Pvt. Ltd.
Effluent Monitoring | OCEMS | Water Quality Monitoring | Data Acquisition & Connectivity | Real- Time Monitoring | Environmental Monitoring | Automation
