Clear Water

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Ecological Impact of Dams

luonut Katie Abel

Local water supply process

luonut TIFFANY UZAMERE

Summative of Science

luonut Juanes Patiño

suspension

luonut Patricia Nicolas

WasteWater

Dual Purpose Sedimentation Basins

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

Wastewate is screened