March 17, 2019

Recirculating Aquaculture Systems


Vertus Alternative Energy Solutions has worked for more than 5 years with design-build projects in the fields of construction, agriculture and commerce, delivering over 40+ projects, which have been built across most of India.

In recent years, we have involved good sub-contractors and incorporated a design-build model into our services, meaning that we can now offer design-build construction methods for land-based, Recirculating Aquaculture Systems.

We handle the entire process, starting with the planning of the production capacity, a price calculation for the total project, dealing with the relevant authorities and project management – so as to finally deliver a finished and tested production unit.

Generic Re circulation System Design

All modern RAS systems generally have the following components;

  • Pump
  • Bio-filter
  • Solids collection systems (a rotating drum filter)
  • A foam fractionation unit (also known as a protein skimmer or dissolved air floatation device)
  • Carbon dioxide degasser
  • Nitrate filter
  • Sterilisation points (usually UV sterilisation)
  • Tank drainage system that separates wastes from main outflows
  • Temperature control (heat pump or evaporative cooling)
  • Heat exchange of effluent waters
  • Oxygen injection system
  • A pH control and alkalinity dosing system