Uf+wastewater+treatment+plant+tour, Exercises of Water and Wastewater Engineering

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UF Water Reclamation Facility

http://bellsouthpwp.net/r/e/reginawilliams/index.html

Overview

• Treats wastewater generated from

housing and dorm areas, as well asacademic and auxiliary buildings on themain campus (3 mi

)

• Facility has been in operation since 1994 • Uses BioDenipho Process to treat

wastewater

Aerial View

Aerial View

PreliminaryTreatment

Preliminary Treatment

Grit Removal Conveyor

Vortex Grit Chamber

Automatic Bar Screen, Screen Chute & Muffin

Monster (Channel Grinder)

Influent Flow &

Influent Flow Meter

What is another way tomeasure flow at awastewater treatmentplant?

Channel Grinder

Grind wood, plastics,rocks, nuts, bolts, wire,sludge and other foreignmaterial that can causedamage to process andwaste water equipment

Bar Screens

•

Required to remove objects greater than ½-1”(e.g., paper, twigs, rags, plastics)

Mechanically Cleaned

Bar Screen

Aerial View

AnaerobicBasins

Anaerobic Basins

• Activated sludge from the secondary clarifiers added in channel splitterbox just before anaerobic basins• Low-speed mixers provide a homogenous mixture of the activated sludgewithout the creation of any floc shear or vortices.• As the influent and return activated sludge are stressed under anaerobicconditions, bacteria begin releasing phosphorus into the mixed liquor,increasing the phosphorus concentration

Aerial View

Aerobic/AnoxicBasins

Aerobic/Anoxic Basins

Anoxic Basins

Oxidation Ditch

Nitrification: ammonia oxidized to nitrateMicroorganisms convert stored BOD(biochemical oxygen demand) to CO

2

,

water, and increased cell mass.Uptake phosphorous (necessary for cellgrowth) – net P uptake is more than thatreleased in anaerobic basins

Denitrification: Reduce nitrate to N

2

gas

Low dissolved oxygen concentrationBOD is degraded

Aerial View

Anoxic Basins

Aerial View

Clarifier

Secondary Clarifier

RAS – Return activated sludge WAS – Waste activated sludge

Aerial View

Tertiary SandFilters

Tertiary Sand Filters

Aerial View

ChlorineContactor

Chlorine Contactor

Aerial View

Effluent StorageTank

Aerial View

Sludge HoldingTanks

Pumps

Reuse Pumps

Waste Sludge Pumps

Chlorine Effluent Transfer Pumps

Return Sludge Pumps

Where does the effluent and WAS go?

Effluent water:

Re-use – on-campus irrigation (90%) Well Overflow to Lake Alice

WAS:

Sludge is dewatered first and then land applied