Modular Wastewater Plants
Cost-effective KEE RBC Modules
Upgrade your wastewater management with a KEE Process modular water treatment plant. Our cost-effective Modular RBC Wastewater Plants provide reliable biological treatment for small to medium-sized flows. Featuring scalable modules for BOD removal, nitrification, and nutrient reduction, these robust GRP systems are easy to install both above and below ground.
With patented Managed Flow® technology, KEE modular plants offer fast deployment, low lifetime costs, and flexible designs for various wastewater applications. Achieve superior performance and regulatory compliance with a tailored modular solution.

Revolutionising Biological Treatment
KEE modular water treatment plants provide reliable, efficient, and future-proof solutions for both new wastewater developments and upgrades to existing treatment facilities. These plants offer scalable and sustainable wastewater management, designed to meet evolving regulatory demands and operational challenges. For added peace of mind, fixed-price operation and maintenance contracts are also available.
- Purpose-Built Biological Modules: Each modular unit is specifically designed for either biological oxygen demand (BOD) reduction using DC modules or for nitrification and phosphorus removal with DN modules, which also include nitrogen reduction pathways.
- Advanced Managed Flow® Technology: KEE’s patented Managed Flow® system is standard in all modules, ensuring optimal treatment performance under fluctuating load conditions with minimal maintenance requirements.
- Expandable and Customisable: These modular water treatment plant systems can treat up to 750 population equivalents (PE) in a single module. They can be scaled by using multiple units to accommodate up to 5,000 PE.
- Robust GRP Construction: The structural-grade Glass Fibre Reinforced Polyester (GRP) casing is designed to withstand both hydrostatic and ground pressures. Modular covers with hatches provide easy access for servicing and maintenance.
- Energy-Efficient and Quiet Operation: Each rotating biological contactor (RBC) is powered by a direct-coupled geared motor, ensuring very low energy consumption while operating virtually silently and without any odour.
- Long Lifespan and Low Life-Cycle Cost: Structural components are built to last over 30 years, and the mechanical and electrical parts are rated for an L10 life of 100,000 hours, resulting in the lowest lifetime cost among modular water treatment plant options.
- Comprehensive Maintenance Contracts: Fixed-price operation and maintenance packages are available, providing peace of mind and ensuring optimised, ongoing performance.
Achieve your performance, sustainability, and long-term cost goals with a next-generation treatment solution from KEE. Contact us today to discuss how our Modular Wastewater Plants can be designed to meet your specific needs.
FAQs
Can these plants be used to upgrade existing facilities?
A KEE modular water treatment plant is an effective solution for upgrading or expanding the capacity of an existing wastewater treatment facility that may be underperforming. Since the modules are self-contained, they can be easily integrated into current processes to enhance the quality of final effluent or to manage increased hydraulic loads.
Are KEE modular plants environmentally compliant?
Absolutely. Every modular water treatment plant we design is built to meet or exceed strict regulatory standards for BOD reduction, nitrification, and nutrient removal. Our patented Managed Flow® technology ensures consistent performance even when load conditions fluctuate, effectively protecting local watercourses from pollution.
How long does a Modular Water Treatment Plant last?
KEE modular plants are designed for longevity. The structural components made from GRP (Glass Reinforced Plastic) have a design life of more than 20 years. The mechanical and electrical parts, including the drive motors for the Rotating Biological Contactor (RBC), are rated for an L10 life of 100,000 hours. This design ensures one of the lowest lifetime costs in the industry.












