ChimanaTech RAS-One

How it works

• Water enters at the top of the vessel and is stripped of CO₂ with diffused aeration.

• Water flows down a biomedia bed, where nitrification occurs

• At the bottom, water enters a second chamber where oxygenation is achieved with a down-flow oxygen saturator.

• Water exits through an overflow at the top, by gravity.

  Additional functions

• Protein skimming: intense aeration for CO₂ strpping may produce foam. Excess foam escapes through the crown outlet at the top. Excess foam can also be pushed out by increasing the water level in the system.

• Microparticle filtration: depending on user preference, the biomedia can be stirred gently for a moving bed bioreactor function, or left still as a fixed bed biofilter. In fixed bed biofilter mode, the biofilter traps fine solids. This can be used to aid in particle filtration.

  RAS-One requires a mechanical filtration step upstream e.g. sand filters, bead filters or drum filters + pump sump.

Specs - RAS-One S1

• Capacity: 1 kg feed per day

• Flow: up to 6 m³/h

• Material: PP or PE, PVC

• Color: Beige or Black. Custom colors on request.

• Transport dimensions: 800mm x 1200mm x 2000mm

• Installed dimensions: (with foam skimmer installed): 800mm x1200x 2400mm

• Approx weight: 200kg

  Larger models both upcoming and on request.

The core of RAS in a single device

RAS-One combines CO₂ stripping, ammonia removal, oxygenation and fine solids removal in one integrated unit. RAS-One is designed as a modules that can be deployed in applications ranging from research and hatcheries to full commercial farms.