The MobiSewer Rotating Biological Contactor (RBC) is a biological attached growth effluent treatment system that adapts automatically to organic load and hydraulic flow variations.
Bacteria develop naturally on the media discs placed in rotation to form a biological growth medium. While emerged, these bacteria become saturated with oxygen, and while immerged they feed on the dissolved organic material.
The system was developed to be more efficient, durable and simpler to operate and maintain than any other similar system ever built. Drawing from decades of wastewater treatment plant design and operating experience, the system incorporates several new patent-pending process innovations, including an optimised Flow Control System and clog-free self-cleaning media, which feature the highest surface area per reactor volume.
Purpose designed and built according to the specifications for either a 20ft- or 40ft High Cube ISO Container, the MobiSewer RBC is cost effective to transport, simple to handle and easy to install either above or below ground. The container dimensions result in significant transport savings when compared to other irregularly sized packaged sewage treatment plants. All steel components are suitably protected against corrosion with materials selected to find the optimal price-quality balance.
The system was stringently engineered with intensive focus on the drive system, rotor design and corrosion protection to counteract the consequences of poor maintenance, irregular overloading, component fatigue, and operating in harsh climatic conditions.
The system provides wastewater treatment services for new or retrofit small and medium-sized rural or semi-urban communities, with typically 150 or more population equivalents including:
The final effluent complies with even the strictest effluent quality standards as a result of the high-efficiency final settlement unit with integrated sludge return and surface skimmer, as well as the tertiary polishing filter. The combination of the MobiSewer® RBC process and Biorock® polishing media allows separation of the treated water and remaining suspended solids. The achievement of water of very high quality, beyond most international norms or thresholds required today, make it possible to conserve water by re-using it, whether into ground discharge, landscape irrigation, or for non- essential or non-hygiene applications such as vehicle wash bays, dust suppression, industrial process water, or similar.
Typical final effluent quality from a MobiSewer RBC system will be:
|Parameter||DWA Requirement (General Limits)||Biorock Final Effluent|
|Suspended solids (mg/l)||25||<10|
As an option, the MobiSewer RBC can be configured for total nutrient removal (Nitrogen and Phosphorous) with an optional dosing system.