Rotating Biological Contactors (RBC) treatment plants and Aerated Treatment Plants (ATP) are two distinct wastewater treatment systems, each employing different mechanisms to purify water. Understanding their differences can help in selecting the appropriate system based on specific needs and environmental considerations.
RBC treatment plants utilise a series of rotating disks or drums as a medium for the growth of microorganisms. These rotating biological contactors are partially submerged in wastewater, and as they turn, microorganisms attached to the media come into contact with the organic pollutants in the water. This contact facilitates the biological treatment process, breaking down and metabolizing contaminants. RBC systems are known for their effluent quality, energy efficiency, and effectiveness in treating organic matter. In addition, these systems are silent running.
Altetnatively, Aerated Treatment Plants rely on the introduction of air or oxygen into the wastewater to create an aerobic environment. This promotes the growth of aerobic bacteria, which feed on organic pollutants. Aeration tanks in these systems facilitate the biological breakdown of contaminants through microbial activity. ATP systems are particularly effective in treating both organic matter and nutrients present in wastewater. They offer flexibility in handling variable flows and loads.
One notable difference lies in the configuration and operation. RBC treatment plants consist of rotating discs in a tank, whereas Aerated Treatment Plants typically involve larger tanks with diffused or mechanical aeration systems with air introduced by an air compressor (also called a blower.)
Energy consumption is another contrasting factor. RBC systems generally require less energy due to the rotational motion of the discs being driven by a simple motor with a capacitor. In contrast, ATP systems, especially those with mechanical aeration, may have higher energy demands for maintaining proper oxygen levels in the treatment tanks, although a premium, well maintained compressor will help keep costs down.
Choosing between RBC and ATP systems often depends on specific treatment goals, site conditions, and personal preferences. While RBC systems may be preferred for simpler applications, ATP systems are often chosen for their versatility, simplicity and cost.
We offer a full range of aerated treatment plants and RBC systems. Here are a few of our favourites:
Klargester BioDisc
WPL Diamond DMS range
Harlequin HydroClear HC range
Klargester BioAir range
PSR Environmental stock all of the above ranges and are able to supply treatment plants through out Norfolk, Suffolk and Essex with incredible lead times. We pride ourselves on our knowledge and ensure we are always competitive with pricing.