Water treatment includes treating wastewater to be discharged into a water body and treating raw water from a water body to be used. The World Health Organization has guidelines for water quality that are used around the world, but most areas have additional rules as well. Canada has a set of guidelines, which are not as strictly followed or as stringently determined as the legislature in the US.
Water Purification (for drinking and other uses)
Toledo: Collins Park Water Treatment Plant
Wastewater Treatment (for release into public water)
Toledo: Bay View Wastewater Treatment for water reclamation
FINE BAR SCREENS AND PUMP STATIONS
Screens remove debris to prevent clogging and protect pumping equipment. Pump stations transport raw sewage to the treatment plant.
AERATED GRIT TANKS
Remove five to ten tons of grit (sand, gravel, and other heavy solids) daily for landfill disposal.
OIL AND GREASE SKIMMING TANKS
Collect and transfer floatables to scum separation tanks. The sludge settles to the bottom and is pumped to the sludge thickeners.
CHLORINE CONTACT TANK
Allows plant personnel to monitor and control treatment processes via computer. Computers also track the plant’s performance for documentation in monthly operating reports.
Thicken raw primary sludge prior to placement in the Digester Storage and Mix Tank. Dilution water (final effluent) is added to keep the tanks from becoming septic. Thickener effluent is returned to the secondary tanks.
DISSOLVED AIR FLOATATION
BELT FILTER PRESSES
Add polymer to the sludge from the digesters. Sludge is then dewatered in belt filter presses, and sent to the biosolids reuse programs. Remaining water is returned to the aeration tanks.
Toledo Information: all from Toledo, Ohio’s Public Utilities website
- Division of Water Treatment – Collins Park Water Treatment
- Division of Water Reclamation – Bay View Treatment Plant
- Also see: