Wastewater pretreatment holding tank

Contributor Thomas W. Simmons, Indiana University of Pennsylvania

Parshall Flume

Description Narrow channel used to determine flow rate by measuring wastewater stream. Contributor Thomas W. Simmons, Indiana University of Pennsylvania

Description Shreads or cuts-up (comminution) large solids which then remain in wastewater stream. Contributor Thomas W. Simmons, Indiana University of Pennsylvania

Grit Channel

Description Long narrow trough where grit settles and is removed manually from the bottom. Contributor Thomas W. Simmons, Indiana University of Pennsylvania

Primary clarifier

Description Primary treatment or sedimentation where reduced flow allows heavier material to settle to bottom and lighter material to float to surface. Contributor Thomas W. Simmons, Indiana University of Pennsylvania

Primary clarifier scum skimmers

Description Collect floatable solids in primary clarifier. Contributor Thomas W. Simmons, Indiana University of Pennsylvania

Primary clarifier scum trough

Description Removes floatable solids from primary clarifier. Contributor Thomas W. Simmons, Indiana University of Pennsylvania

Primary clarifier effluent weirs

Description Clear surface water of primary clarifer exits by flowing over weirs. Contributor Thomas W. Simmons, Indiana University of Pennsylvania

Aeration tank

Description Secondary treatment of wastewater from primary clarifier using the activated sludge process. Contributor Thomas W. Simmons, Indiana University of Pennsylvania

Aeration tank

Description Secondary treatment of wastewater from primary clarifier using the activated sludge process. Contributor Thomas W. Simmons, Indiana University of Pennsylvania

Description Produces fine aeration to degas ammonia from wastewater in aeration tank. Contributor Thomas W. Simmons, Indiana University of Pennsylvania

Description Surface water of aeration tank exits by flowing over weirs. Contributor Thomas W. Simmons, Indiana University of Pennsylvania

Secondary clarifer

Description Activated sludge from aeration tank effluent separates from liquid and settles to bottom for removal. Contributor Thomas W. Simmons, Indiana University of Pennsylvania

Secondary clarifier scum skimmer & trough

Description Collects floatable solids in and removes floatable solids from secondary clarifier. Contributor Thomas W. Simmons, Indiana University of Pennsylvania

Secondary clarifier weirs

Description Clear surface water of secondary clarifier exits over weirs. Contributor Thomas W. Simmons, Indiana University of Pennsylvania

Chlorine contact basin

Description Long narrow tank allowing adequate contact time for secondary clarifier effluent with added chlorine. Contributor Thomas W. Simmons, Indiana University of Pennsylvania

Ultraviolet light radiation generator instrument

Contributor Thomas W. Simmons, Indiana University of Pennsylvania

Ultraviolet light radiation lamps

Contributor Thomas W. Simmons, Indiana University of Pennsylvania

Wastewater testing laboratory

Contributor Thomas W. Simmons, Indiana University of Pennsylvania

Wastewater influent versus effluent

Contributor Thomas W. Simmons, Indiana University of Pennsylvania

Settled activated sludge

Contributor Thomas W. Simmons, Indiana University of Pennsylvania

Anaerobic sludge digestion tanks

Description Settled sludge from primary and secondary clarifiers is pumped to tanks and digested anaerobically. Contributor Thomas W. Simmons, Indiana University of Pennsylvania

Pre-dewatering sludge polymer

Contributor Thomas W. Simmons, Indiana University of Pennsylvania

Sludge Dewatering band press

Contributor Thomas W. Simmons, Indiana University of Pennsylvania

Sludge dewatering band press effluent

Contributor Thomas W. Simmons, Indiana University of Pennsylvania

Dewatered sludge

Contributor Thomas W. Simmons, Indiana University of Pennsylvania

Sludge dewatering centrifugal press

Contributor Thomas W. Simmons, Indiana University of Pennsylvania