Mixing devices employed shall be so constructed as to provide adequate mixing of the raw water with previously formed sludge particles, and prevent deposition of solids in the mixing zone.
(Mixing devices; employed; ) (Mixing devices employed; shall be; so constructed as to provide adequate mixing of the raw water with previously formed sludge particles) (Mixing devices employed; prevent; deposition of solids)
Mixing devices Mixing devices employed Mixing devices employed
employed shall be prevent
so constructed as to provide adequate mixing of the raw water with previously formed sludge particles
deposition of solids