BDL = Below Detectable Level

* = (summer/winter)

• BROADWAY

Total Pumping Capacity	210 MGD
Number of Pumps	7
Capacity of Each	30 MGD

• WESTWOOD

Total Pumping Capacity	35 MGD
Number of Pumps	5
Capacity of Each	7 MGD

GRIT BASINS

• NORTH - Gets 40% of Total Flow

Number of Basins	2
Dimensions	40 ft X 40 ft
Depth	2 ft

• SOUTH - Gets 60% of Total Flow

Number of Basins	2
Dimensions	40 ft X 40 ft
Depth	3 ft

PRIMARY SETTLING

• NORTH - Gets 40% of Total Flow

Number of Basins	4
Diameter	115 ft
Water Depth	12 ft
Capacity (each)	0.93 MGD
Surface Overflow Rate (all units operating, 72 MGD)	693 gpd/ft2
Detention Time	3.1 hours

• SOUTH - Gets 60% of Total Flow

Number of Basins	3
Dimensions	240 ft X 80 ft
Water Depth	13 ft
Capacity (each)	1.87MGD
Surface Overflow Rate (all units operating, 72 MGD)	750 gpd/ft2
Detention Time	3.1 hours

TRICKLING FILTERS

Number of Basins	20
Diameter	24165 ft
Media Depth	7 ft
Media Type - Random fill slag & limestone	2 in to 4 in diameter
Organic Loading	35 lbs BOD/1000 ft3
Hydraulic Loading	168 gpd/ft2

LOW LIFT PUMP STATION

Total Pumping Capacity	242 MGD
Number of Constant Speed Pumps	2
Capacity of Each	72 MGD
Number of Variable Speed Pumps	2
Capacity of Each	50 MGD

SECONDARY SETTLING

• EAST -Gets 40% of Total Flow

Number of Basins	4
Diameter	120 ft
Water Depth	10.3 ft
Capacity (each)	0.87 MGD
Surface Overflow Rate (all units operating, 72 MGD)	636 gpd/ft2
Detention Time	2.9 hours

• WEST Gets 60% of Total Flow

Number of Basins	6
Diameter	120 ft
Water Depth	12.3 ft
Capacity (each)	1.04 MGD
Surface Overflow Rate (all units operating, 72 MGD)	636 gpd/ft2
Detention Time	3.5 hours

INTERMEDIATE PUMP STATION

Number of Variable Frequency Drive Pumps	3
Number of Constant Speed Pumps	2
Capacity of Each	38 MGD

ACTIVATED SLUDGE PROCESS - 3 Pass, plug flow, fine bubble dome diffusers, tapered aeration

Number of Basins	8
Dimensions	153 ft X 135 ft
Water Depth	18 ft
Capacity (each)	2.8 MG
Ammonia applied	15,612 lbs/day
MCRT (avg)	11 days
F/M Ratio	0.1
Detention Time	7.4 hours
Dome Diffusers	6,030 per Basin

AERATION SYSTEM

Number of Activated Sludge Compressors	4
Capacity (each)	22,000 scfm
Motor (4160 V)	1,500 HP
Number of Channel Air Compressors	3
Capacity (each)	3,000 scfm
Motor (460 V)	150 HP

FINAL SETTLING

Number of Basins	8
Diameter	160 ft
Water Depth	16 ft
Capacity (each)	2.4 MGD
Collectors	Hydraulic suction, multiple orifice header
Surface Overflow Rate (all units operating, 72 MGD)	448 gpd/ft2
Detention Time	6.4 hours

RETURN & WASTE ACTIVATED SLUDGE PUMPING STATION

• RAS PUMPS

Number of pumps	10
Capacity of Each	13.6 MGD
Variable Frequency Drives	10

• WAS PUMPS

Number of pumps	3
Capacity of Each	250 gpm
Variable Frequency Drives	3

• POLYMER FEED FACILITY

Emulsion Polymer Storage	4 units
Polymer Mix & Aging Tanks	8 units
Chemical Feed Pumps	8 units

EFFLUENT FILTERS

Tertiary Filters - 4 cells/units	5 units
Cell dimensions (each)	30 ft X 30 ft
Type	Declining Rate, Automatic Gravity Backwash
Maximum Capacity	115 MGD
Blending Design Rate	35 MGD
Media Type	Anthracite Coal
Media Depth	30 inches
Media Size	1.4 to 1.6 mm
Backwash	Combined simultaneous water and air scour, 12 gpm/ft2 water, 4 cfm/ft2 air
Filter Run Time (design)	18.8 hrs

CHLORINATION FACILITY

Liquid Feed Auto-Switchover Systems	2 units
Evaporators	2 units
Chlorinators	3 units
Total Feed Capacity (effluent)	6,000 lbs/day
Total Feed Capacity (Non-Potable Water)	200 lbs/day
Chlorination Point	After Effluent Filters
Contact Time @ peak flow	15 Minutes

CHLORINATION / DECHLORINATION / POST AERATION BASINS

Number of Basins - (3 passes each)	2
Basin dimensions	153 ft X 78 ft X 10ft
Chlorine Contact	First Pass & Half of Second Pass
Dechlorination	Last Half of Second Pass
Coarse Bubble Post Aeration	Third Pass

DECHLORINATION FACILITY - Liquid Sodium Bisulfate - 38% NaHSO3

Storage Tanks (5,700 gal each)	3 units
Day Tanks (250 gal each)	2 units
Chemical Feed Pumps (50 to 500 gpm)	3 units

POST AERATION FACILITY

Blowers (positive displacement)	3 units
Capacity (each)	2,400 cfm @6 psi

ACTIVATED SLUDGE THICKENING

Dissolved Air Flotation Tanks	4 units
DAF Tank Surface Area	400 ft2
Design Solids Loading (avg)	9350 lbs/day
Feed Solids Concentration (avg)	0.7%
Float Solids Concentration (w/o polymer)	4% peak

FERROUS CHLORIDE FEED FACILITY

Location	Inside DAF Building
Purpose	Control of H2S in digester gas
Storage Tanks (2,500 gal each)	2 units
Chemical Feed Pumps (0 to 280 gpm)	2 units

ANAEROBIC DIGESTERS - EAST BANK

Number of Units	4
Diameter	90 ft
Depth	33 ft
Cover Type	Floating
Operating Temperature	98 F
Approx. Operating Volume (each Digester)	207,816 ft3

ANAEROBIC DIGESTERS - WEST BANK

Number of Units	4
Diameter	85 ft
Depth	30 ft
Cover Type	Floating
Operating Temperature	98 F
Approx. Operating Volume (each Digester)	164,560 ft3

DIGESTER GAS STORAGE

Gas Generation per day	810,000 ft3
Gas Holding Sphere	1 unit
Sphere Diameter	52 ft
Sphere Volume	73,620 ft3
Gas Holding Capacity @ 50 psi	300,000 ft3

BIOSOLIDS BENEFICIAL USE

Contractor	Bio Grow Systems (Wheelabrator) Inc.
Use Method	Agronomic Land Application
Permitted Land in 13 Counties	>30,000 acres
Biosolids Storage On-Site, liquid	500,000 gal
Biosolids Storage Area On-Site, cake	15,000 ft2
Belt Filter Presses (2 meter)	4 units
Biosolids Processed Daily (avg)	45 dry tons

ENERGY RECOVERY

Gas Burning Engines	3 units
Cylinders (V-block)	12
Air Intake	Turbo-charged
Generators (direct coupled to engines)	3 units
Volts	4160
Phase	3
Cycles	60
Design Loads on WWTP
BTUs/hr (heat)	6,734,000
Electric @ 72 MGD	7,336 KW
Design Production at WWTP
BTUs/hr (heat)	8,467,000
Electric @ 72 MGD	1,620 KW
Actual Production at WWTP
BTUs/hr (heat)	8,313,917
Electric @ 72 MGD	922 KW

ODOR CONTROL- Covers Headworks, N & S Grit, N & S Primaries, Scum Collection Buildings

Type	Packed Tower
Diameter	10 ft
Packing Depth	13 ft
Packing Type	Random Fill Polypropylene Media
SCFM	25,000
H2S Inlet	300 PPM
H2S Outlet	1 PPM
Liquid Recirculation Rate	468 gpm
Blowdown Rate (Max)	5 gmp

DETRITUS DEWATERING BUILDING