Pictures from the

Roseville Wastewater Treatment Plant

Pump station with odor control tower

 Headworks and odor control

Odor control

Influent pipe (venturi meter)

Bar screen

Screenings

Primary clarifier (covered for odor control)

Secondary treatment

Aeration tank

Aeration tank

Aeration disks (bottom of empty aeration tank)

Aeration disks close-up

Secondary clarifier

Secondary clarifier

Secondary clarifier (Empty. Notice the sludge equipment.)

Secondary clarifier (Effuent weirs.)

Filtration

Filter

Filter

Filter (controls)

Chlorination, bioassay, and effluent

Chemical storage

Chlorine contact tank

Bioassay tank (Can you see the little black/gray fish?)

Cascade aerator

Effluent

Effluent

Sludge facilities

Gravity belt thickener (side view)

Gravity belt thickener (inflow)

Gravity belt thickener (outflow)

Anaerobic digester

Belt filter press (dewatering)

Dewatered sludge

Dried sludge (close-up)