
It is very important to choose a proper diffuser for efficient running and economical capital investment of the treatment Plant. EPDM membrane based diffusers are suitable for municipal waste/ domestic sewage. Silicone membrane diffusers are suitable where the temperature is high or industrial waste having lot of chemicals.
It is very important to choose between HIGH EFFICIENCY DIFFUSERS (HED) & HIGH CAPACITY DIFFUSERS (HCD). In HED slit size becomes small, which means small bubble size ( more oxygen transfer), low diffusers capacity(less amount of air per diffuser), more head loss ( higher energy requirement) & more number of diffusers i.e. higher initial cost but smaller foot print and lesser running cost. In HCD Slit size becomes large, Bubble size increases, low head loss & lesser number of diffusers.