Anua’s PuraSys Kit Brings SBR Treatment to Many Decentralized Wastewater Applications

Anua’s PuraSys Kit Brings SBR Treatment to Many Decentralized Wastewater Applications

PuraSys SBR offers sequencing batch reactor technology in a modular package, which Anua asserts can be installed in less than two hours to bring advanced treatment to any standard septic tank.

“The system uses a step-fill process. The reactor fills several times during each batch. At the start of each cycle, effluent is brought from the pretreatment compartment to the reactor chamber,” says Colin Bishop, president of Anua. “The effluent is aerated so that nitrification will occur. Effluent is then brought again from the pretreatment compartment to the reactor chamber. This provides an anoxic carbon source that is ideal for denitrification.”

Certified to NSF/ANSI Standards 40 and 245, PuraSys SBR ships in a boxed kit for significant transport savings. It uses existing space in standard septic tanks, meaning installers don’t need to create extra space for the system.

The system comes with a smart control panel, which automatically adjusts aeration to water flow based on occupancy. With the process control, treatment occurs as needed, with intermittent aeration, mixing and settling, making it an energy-efficient treatment choice. The adjustability prevents overaeration and sludge bulking. Online performance monitoring is an option, including a notification and alarm system for motor or flow issues.

Part of the efficient modular design is due to weighted PVC pipe stands that serve as water or air lines in addition to holding up the pumps and aerator. The kits can be scaled for nearly any application, from new construction to retrofits, residential or commercial, and for nitrogen-sensitive areas or small properties.

“It is general purpose in that it is flexible; the system can be used over widely ranging applications and waste strengths, and for different flow rates,” Bishop explains.

There are four kit models, with treatment capacities ranging from 800 to 1,400 gpd. One of the models contains an additional aerator, while another uses a fill pump instead of a siphon. These two models are designed for commercial applications. Kits can be installed in parallel reactors for higher flows.

“The kit transforms an ordinary septic tank into a compact, advanced treatment unit, offering a modular solution for space-constrained sites or nutrient-limited watersheds,” Bishop says. 800-787-2356;


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