|
RAW WASTEWATER
FLOW |
| CURRENT AVG DAY FLOW |
16.5 MGD |
| DESIGN AVG DAY FLOW |
25.0 MGD |
| DESIGN PEAK HOURLY FLOW |
40.8 MGD |
| DESIGN PEAK
HYDRAULIC FLOW |
49.9 MGD |
| DESIGN BIOCHEMICAL
OXYGEN DEMAND (BOD5) |
260 mg/L |
| DESIGN SUSPENDED
SOLIDS (TSS) |
350 mg/L |
|
HEADWORKS |
| BAR SCREENS - MECHANICALLY
CLEANED |
2 |
| BAR RACK SPACING |
1/2 INCH |
|
RAW WASTEWATER |
| NUMBER OF PUMPS |
4 |
| TYPE |
VERTICAL DRY PIT (VFD) |
| PUMP CAPACITY (EACH) |
12,000 GPM |
| MOTOR HORSEPOWER (EACH) |
200 HP |
|
GRIT CHAMBER |
| GRIT CHAMBERS |
|
| NUMBER OF CHAMBERS |
2 |
| GRIT BLOWERS |
|
| NUMBER OF BLOWERS |
2 |
| GRIT PUMPS |
|
| NUMBER OF GRIT PUMPS |
2 |
| TYPE |
HORIZONTAL RECESSED
IMPELLER |
| PUMP CAPACITY (EACH) |
250 GPM |
| MOTOR HORSEPOWER (EACH) |
15 HP |
|
PRIMARY CLARIFIERS |
| PRIMARY CLARFIFIERS |
|
| NUMBER OF CLARIFIERS |
3 |
| TANK DIAMETER |
110 FT |
| TANK SIDE WATER DEPTH |
13 FT |
| SURFACE OVERFLOW RATE @ ADF |
1,000 GPD/FT2 |
| WEIR LOADING RATE @ ADF |
27,500 GPD/FT |
| PRIMARY SLUDGE PUMPS |
|
| NUMBER OF PUMPS |
4 |
| TYPE |
PROGRESSIVE CAVITY |
| CAPACITY (EACH) |
130 GPM |
| MOTOR HORSEPOWER (EACH) |
15 HP |
| PRIMARY SCUM PUMPS |
|
| NUMBER OF SCUM WELLS |
2 |
| NUMBER OF PUMPS |
4 |
| TYPE |
VERTICAL CHOPPER |
| CAPACITY (EACH) |
150 GPM |
| MOTOR HORSEPOWER (EACH) |
10 HP |
|
TRICKLING
FILTERS |
| TRICKLING FILTERS |
|
| NUMBER OF UNITS |
3 |
| TANK DIAMETER |
160 FT |
| FREE BOARD |
3.5 FT |
| MEDIA TYPE |
60 DEGREES CROSS FLOW |
| MEDIA DEPTH |
14 FT |
| RECIRCULATION PUMPS |
|
| NUMBER OF PUMPS |
4 |
| TYPE |
VERTICAL PROPELLER
(2 VFD) (2 CONSTANT) |
| CAPACITY (EACH) |
11,600 GPM |
| MOTOR HORSEPOWER (EACH) |
150 HP |
| SECONDARY PUMPS |
|
| NUMBER OF PUMPS |
4 |
| TYPE |
VERTICAL MIXED
FLOW (VFD) |
| CAPACITY (EACH) |
11,600 GPM |
| MOTOR HOUSEPOWER (EACH) |
125 HP |
|
SECONDARY
CLARIFIERS |
| SECONDARY CLARIFIERS |
|
| NUMBER OF CLARIFIERS |
3 |
| TANK DIAMETER |
150 FT |
| TANK SIDE WATER DEPTH |
15 FT |
| SURFACE OVERFLOW RATE @ ADF |
480 GPD/FT2 |
| WIER OVERFLOW RATE @ ADF |
17,700 GPD/FT |
| SECONDARY SCUM PUMPS |
|
| NUMBER OF SCUM WELLS |
2 |
| NUMBER OF PUMPS |
4 |
| TYPE |
VERTICAL CHOPPER |
| CAPACITY (EACH) |
175 GPM |
| MOTOR HORSEPOWER (EACH) |
10 HP |
| SECONDARY SLUDGE PUMPS |
|
| NUMBER OF PUMPS |
4 |
| TYPE |
PROGRESSIVE CAVITY |
| CAPACITY (EACH) |
130 GPM |
| MOTOR HORSEPOWER (EACH) |
15 HP |
|
DIGESTERS |
| NEW DIGESTERS |
2 (2 EXISTING) |
| NUMBER OF DIGESTERS |
3 (IN SERVICE) |
| TYPE |
HIGH RATE
ANAEROBIC, PRIMARY |
| VOLUME (COMBINED) |
522,500 Ft3 |
| MIXING PUMPS |
|
| VSS REDUCTION |
57% |
| DIGESTED SLUDGE (2% SOLIDS) |
63,000 GPD |
| GAS PRODUCTION @ 15 CF/LB VSS |
218,000 CF/DAY |
| METHANE PRODUCTION +(62.5%) |
166,000 CF/DAY |
| SOLIDS RETENTION TIME |
54 DAYS |
| CONJUNCTION |
|
| NO. OF UNITS |
2 |
| OUTPUT (EACH) |
400 KW |
| Service
Area: |
63.4 Square
miles |
| Staff: |
5 operators,
1 electrician, 1 mechanic,
1 Lab technician, 1 Supervisor |
| Plant Capacity: |
25 million
gallons per day |
| Average
Daily Flow: |
16.5 million
gallons per day |
| Bio-solids
Processed: |
234 tons
per month |
| Methane
Gas Produced: |
166,000
cubic feet per day |
| Average
Influent: |
BOD 297
mg/L, SS 359 mg/L |
| Average
Effluent: |
BOD 34
mg/L, SS 21 mg/L |
|
