The ABNR Process

Modeled after traditional activated sludge processes used in biological wastewater treatment systems, the CLEARAS ABNR Solution has been designed to remove nutrients and contaminants that primary and secondary treatments cannot capture. The three stages – mix, recover and separate – result in effluent enriched with up to 40% more oxygen and no harmful by-products to be disposed of. Our installations are administered by a state of the art information management system, affording low-cost monitoring and accessibility from anywhere.

How it Works

1. Mix

Wastewater enters the ABNR system and is mixed with carbon dioxide and a bio-diverse blend of algae and other microorganisms to initiate nutrient recovery. Carbon dioxide drives biological activity (photosynthesis) and manages pH levels.

2. Recover

In the photobioreactor environment, biological activity is optimized for the consumption of carbon dioxide, phosphorus, nitrogen and other critical constituents. System parameters – including hydraulic retention time, pH levels, and light availability – are maintained to maximize the recovery of nutrients. Dissolved oxygen is produced as a beneficial by product of the recovery phase.

3. Separate

Advanced ultra-filtration separates flow into two different streams—the clean water stream and the recycle stream. The recycle stream sends healthy, Return Activated Algae and other biological organisms back to the mix phase to reseed new wastewater entering the ABNR system, while excess algae is harvested from the treatment process.