1 Scope
This European Standard specifies the design principles and performance requirements
for secondary treatment by biological fixed-film reactors at wastewater treatment
plants for more than 50 PT.
The primary application is for wastewater treatment plants designed for the treatment
of domestic and municipal wastewater.
Biological fixed film reactors include biological trickling filters, rotating biological
contactors, submerged bed reactors and biofilters.
Differences in wastewater treatment throughout Europe have led to a variety of systems
being developed. This standard gives fundamental informations about the systems; this
standard has not attempted to specify all available systems.
Detailed information additional to that contained in this standard may be obtained
by referring to the Bibliography.