35 Ill. Adm. Code 604.400
General Requirements for Aeration
Section 604.400 General Requirements for Aeration
a) All
aerators, except those discharging to lime softening or clarification plants,
must be protected from contamination by birds, insects, wind borne debris,
rainfall and water draining off the exterior of the aerator. Screens must be
24 mesh.
b)
A
bypass must be provided when a single aeration unit is installed.
c)
The
stability of the water after aeration must be evaluated to determine the need
for additional treatment under Subpart I.