Wastewater treatment involves several crucial steps to ensure effective cleaning and purification before discharge. Initially, sewage enters primary sedimentation tanks where roughly half of the suspended solids are separated from the liquid.
Secondary effluent is pumped to the nitrification/denitrification process
Nitrification and denitrification effluent flows from the DPSB
Nitrification/Sedimentation Basins
Nitrification and denitrification prosess continues with mixed liquor from the odd and even sides.
Denitrification/Nitrification
Lime and sodium hydroxide is added at the head of the nitrification/denitrification reactors to maintain the desired alkanity level that is required for the process to function properly.
Nitrification process facilities the oxidation of ammonia nitrogen to nitrogen gas.
Process is a suspended growth biological system starting with 12 reactors
Secondary Sedimentation Basins
Excess biological solids are pumped from the return sludge system as waste activated sludge to the Dissolved Air Flotation Thickeners
Settled sludge is recycled
Secondary Reactors
step by step- feed modified aeration activated sludge process
bubble diffusers
6 centrifugal blowers
Primary Sedimentation
Sewage flows into primary sedimentation tanks that separate about half of the suspended solids from the liquids
Debris and Grit Removal
Aerated grit chambers capture and remove grit
vac-all trucks remove screenings and haul to landfill for final disposal