Anua is an American manufacturer of Clean Water and Clean Air solutions serving the Western Hemisphere. Through the symbiosis of technology, design, and collaboration, we strive to be industry leaders in championing a sustainable future for all.

P.O. Box 77457 Greensboro, NC 27417

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© 2019 by ANUA

The Airashell Biohybrid Filter utilizes recycled seashells as filter media to harness the power of nature and to balance pH. The shell media, water, and microorganisms create an optimal microenvironment for contaminated air treatment. This ensures optimal performance across a broad range of odorous and corrosive compounds.

Why Choose Airashell?

  • Robust system can handle high variability in H2S concentrations

  • Prepackaged system that treats a wide variety of sulfur and nitrogen based compounds

  • No polishing stage necessary

  • Recycled by-product protects the environment while reducing solid waste

  • No continuous nutrient or chemical addition required

  • Low life-cycle cost and easy operation

  • Modular system with small footprint

Applications include:


Manhole or sewage lift stations


Wastewater treatment plants


Sludge processing facilities


Manufacturing facilities


Solid waste operations


Industrial operations


Composting facilities




Overview Sheet

Technical Specification Sheet

Reeds Creek, NC

Biddeford, ME

League City , TX

Nevada City , CA



This system works well with very little maintenance. Our Field Operations team is very busy and this saves us a lot of time and energy.

Doye Baker  Town of Mooresville, NC Field Operator