Client
Project Implementation Directorate, Kathmandu Upatyaka Khanepani Limited, Nepal
Location
Nepal
Capacity
32,400 m³/d
Advanced Sludge Treatment Plant Strengthening Kathmandu’s Wastewater Infrastructure
The rehabilitation and expansion of the sludge treatment system at the Guheshwori WWTP marks a major advancement in Nepal’s wastewater management. Executed for Kathmandu Upatyaka Khanepani Limited under a national initiative to revive the Bagmati River, this sludge treatment plant integrates modern anaerobic digestion systems to enhance treatment capacity and strengthen environmental compliance for the Kathmandu Valley.
Sludge Treatment Plant With Integrated Anaerobic Digestion and Biogas Recovery
The upgraded facility now operates as a modern sludge treatment plant designed to support a full-scale wastewater treatment system through improved sludge stabilization and renewable energy generation. With the expansion of the plant’s capacity from 16.2 MLD to 32.4 MLD, the enhanced sludge management system uses advanced digesters to convert organic sludge into biogas, reinforcing Nepal’s transition toward sustainable and energy-neutral wastewater solutions.
Municipal Wastewater Treatment Enhancement With Modern Sludge Management
As part of a major environmental restoration program, the Guheshwori WWTP integrates a robust sludge line featuring anaerobic digestion, wastewater filtration, aeration upgrades, and new clarifiers. These improvements significantly elevate the performance of the municipal wastewater treatment facility, ensuring efficient sludge treatment and improved operational reliability for a growing urban region.
A Sustainable Sludge Treatment Plant Supporting the Revival of the Bagmati River
This project showcases WABAG’s technological leadership among wastewater treatment companies, delivering a sustainable sludge management solution that supports river rejuvenation and public health. The introduction of anaerobic digesters, enhanced filtration, and high-quality disinfection ensures that treated water released into the Bagmati River meets stringent international standards.
Comprehensive Scope of the Guheshwori Sludge Treatment Plant Upgrade
The project scope included design, engineering, reconstruction, construction, equipment supply, testing, and commissioning. It involved rehabilitating major structures, including oxidation ditches and clarifiers, installing new aeration tanks, and doubling treatment capacity. The new sludge management system was incorporated while maintaining uninterrupted operation of the existing facility.
Treatment Process for High-Quality Sludge Stabilization
The sludge treatment section of the plant employs the activated sludge process integrated with filtration and advanced disinfection. The upgraded system includes two anaerobic digesters for biogas generation and a complete sludge handling line designed to produce stabilized biosolids suitable for safe disposal and reuse.
Anaerobic Digestion System Enhancing Energy Recovery
A key highlight is the introduction of an energy-efficient sludge digestion system, which converts sludge into biogas for power generation. This reduces operational energy costs and brings the facility closer to energy-neutral operation. The odour control system further improves environmental and occupational safety.
Environmental Impact on the Bagmati River Basin
The enhanced sludge treatment process ensures that only high-quality, disinfected water is discharged into the river. This contributes significantly to restoring the ecological health of the Bagmati River, improving water quality, and supporting a healthier ecosystem for communities in the Kathmandu Valley.
A Leading Example Among Wastewater Treatment Companies in Nepal
The successful delivery of this project demonstrates WABAG’s expertise in sludge management and renewable energy integration. As one of the region’s most modern sludge treatment plants, Guheshwori stands as a benchmark for sustainable wastewater and sludge processing practices in South Asia.