ChimanaTech RAS-One

How it works

Designed for small to large scale applications, all units are designed for installation our of the workshop.

S series are ideal for road transport in small trucks.

M series are designed for containerized transport and lorries.

The C series are transported using exceptional transport in most EU roads.

Nominal capacities assume cold, seawater. Biofilter capacity increases substantially with temperature and reduced salinity. With higher feed loads, additional, external CO2 stripping may be required. Contact us to study you case.

The core of RAS in a single device

RAS-One combines CO₂ stripping, ammonia removal, oxygenation and fine solids capture 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.

Meet the family

• 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.

• 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: In fixed bed biofilter mode, the biofilter traps fine solids which are then removed as sloughed biofilm.

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