Air diffusion system

The design of the aeration system in an organic plant that adopts biomass technology adhered to mobile supports is of fundamental importance in terms of the performance you wish to achieve.

Our experience favors medium bubble air diffusion networks capable of covering the entire surface of the bottom of the oxidation tanks, made of stainless steel and designed not to require any type of maintenance.

The presence of the carriers dispersed in the biological volume guarantees the fragmentation of the air bubbles generated by the network into smaller particles and reaching an oxygen transfer yield similar to that generated by a fine bubble diffusion system in a conventional biological plant. The transferred mechanical energy provides an excellent level of mixing and oxygen can easily reach the surface of the biofilm thus fueling the biological process.

The variables to consider when sizing the networks are:

  • number and positioning of the abseils
  • number of networks and speaker interest
  • diameter of the channels and length of the diffusers
  • diameter and density of the air passage holes
  • speed of the air in the circuit
  • load losses generated by the networks

Main features:

  • Possibility of working up to high carrier filling coefficients in biological tanks (m3/m3)
  • Very extended useful life
  • They do not require extraction for cleaning
  • Possibility of draining the tank leaving the carriers inside without the net being damaged due to the weight
  • Low investment cost

However, it is possible to adopt microbubble diffusion networks, paying particular attention to the correct design of the system in relation to the maximum filling level that can be adopted, ensuring that they can be extracted for maintenance and that they are equipped with guides for repositioning in the tank in the presence of carrier.