Below are listed numerous details about the treatment plant design details and capacities.
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Wastewater Flows, MGD
| AVERAGE DRY WEATHER (ADWF) |
10 |
| MAXIMUM 30 DAYS |
30 |
| PEAK WET WEATHER (PWWF) |
90 |
| PLANT HYDRAULIC CAPACITY |
125 |
| SEWAGE CHARACTERISTICS (ADWF): |
|
| |
BOD5, MG/L |
256.5 |
| |
TSS, MG/L |
237.2 |
| |
|
|
BOD5 LOADING, LBS/DAY
| AVERAGE DRY WEATHER |
19,782 |
| MAXIMUM 30 DAYS |
51,291 |
| |
|
|
TSS LOADING, LBS/DAY
| AVERAGE DRY WEATHER |
21,392 |
| MAXIMUM 30 DAYS |
37,780 |
| |
|
|
GRIT CHAMBERS
| TYPE |
AERATED |
| NUMBER |
4 EXISTING, 1 FUTURE |
| LENGTH, FT. |
34 EACH |
| WIDTH, FT. |
18 EACH |
| SIDEWATER DEPTH, FT. |
VARIES |
| DETENTION TIME @ 90 MGD, MIN. |
3.0 |
| AIR SUPPLY CAPACITY, CFM/FT. LENGTH |
10 |
| HYDRAULIC CAPACITY, MGD |
125 |
| COVER & ODOR CONTROL |
YES |
| NO. OF GRIT PUMPS |
4 |
| TYPE OF GRIT PUMP |
RECESSED IMPELLER, CENTRIFUGAL |
| |
|
PRIMARY CLARIFIERS
| TYPE |
RECTANGULAR DOUBLE TANKS |
| NUMBER |
5 |
| LENGTH, FT. |
225 |
| WIDTH, FT. |
40 |
| AVERAGE SIDEWATER DEPTH, FT. |
9 |
| OVERFLOW RATE, GPD/FT2: |
|
| |
@ 90 MGD |
2,000 |
| |
@ 30 MGD |
667 |
| DETENTION TIME, MINUTES |
|
| |
@ 90 MGD |
48.5 |
| |
@ 30 MGD (ALL TANKS OPERATING) |
145.4 |
| COVER & ODOR CONTROL |
INFLUENT CHANNEL ONLY |
| SLUDGE COLLECTOR, TYPE |
CHAIN & FLIGHT |
| CHAIN MATERIAL |
PLASTIC |
| FLIGHT MATERIAL |
FIBERGLASS |
| NO. OF SLUDGE PUMPS |
10 |
| TYPE OF SLUDGE PUMP |
POSITIVE DISPLACEMENT |
| NO. OF SCUM PUMPS |
2 |
| TYPE OF SCUM PUMP |
POSITIVE DISPLACEMENT |
| |
|
BIOTOWER INFLUENT PUMPS
| TYPE |
CENTRIFUGAL, HORIZONTAL |
| NO. OF PUMPS |
4 |
| TOTAL CAPACITY, MGD |
30 |
| CONTROL |
ADJUSTABLE FREQUENCY DRIVE |
| |
|
BIOTOWERS
| TYPE |
HIGH RATE TRICKLING FILTER |
| MEDIA |
PREFABRICATED PLASTIC |
| SHAPE |
OCTAGONAL |
| NUMBER |
2 |
| INSIDE WIDTH, FT. |
54.33 |
| MEDIA DEPTH, FT. |
22 |
| HYDRAULIC PROCESS LOADING RATE, GPM/FT2 |
|
| |
@ 10 MGD & 65% BOD REMOVAL |
1.46 |
| VENTILATION |
FORCED DOWN DRAFT W/NATURAL VENTILATION BACKUP |
| ROTARY DISTRIBUTOR |
GALVANIZED STEEL |
| |
|
AERATION TANKS
| TYPE |
COMPLETE MIX, ACTIVATED SLUDGE |
| O2 SUPPLY |
1 LB. O2/LB. BOD5 |
| O2 TRANSFER FACTORS: |
|
| |
α |
0.70 |
| |
β |
0.90 |
| STANDARD AIR REQUIREMENTS, SCFM: |
|
| |
@ 10 MGD |
1,850 |
| |
@ 30 MGD |
5,200 |
| TYPE OF AIR BLOWERS |
CENTRIFUGAL |
| NO. OF BLOWERS |
3 PLUS 1 STANDBY |
| |
|
SECONDARY CLARIFIERS
| TYPE |
CIRCULAR, CENTER FEED |
| NUMBER |
4 |
| DIAMETER, FT. |
100 |
| SIDEWATER DEPTH, FT. |
10 |
| OVERFLOW RATE, GPD/FT2: |
|
| |
@ 10 MGD |
318.3 |
| |
@ 30 MGD |
955.0 |
| |
|
RETURN SLUDGE FACILITIES
| SLUDGE RETURN CAPACITY (% OF ADWF) |
10-100 |
| TYPE OF PUMPS |
CENTRIFUGAL, VERTICAL |
| NO. OF PUMPS |
4 PLUS 2 STANDBYS |
| |
|
WASTE SLUDGE FACILITIES
| WASTE SLUDGE PUMP CAPACITY |
|
| |
(% OF SLUDGE PRODUCED) |
0-100 |
| TYPE OF PUMPS |
POSITIVE DISPLACEMENT |
| NO. OF PUMPS |
4, ONE PER CLARIFIER |
| |
|
CHLORINE CONTACT TANKS
| TYPE |
PLUG FLOW, STRAIGHT CHANNELS |
| METHOD OF CL2 MIXING |
2 MECH. MIXERS, IN SERIES |
| NO OF CHANNELS |
4 |
| CHANNEL LENGTH, FT. |
300 EACH |
| CHANNEL WIDTH, FT. |
7.5 |
| CHANNEL DEPTH, FT. |
10 |
| HYDRAULIC CAPACITY, MGD |
125 |
| DETENTION TIME, MINUTES: |
|
| |
@ 90 MGD |
13 |
| |
@ 10 MGD (2 CHANNELS ONLY) |
58.5 |
| |
|
DISINFECTION SYSTEM
| SODIUM HYPOCHLORITE SOLUTION |
5 - 6,000 GALLON TANKS |
| NO. OF RESIDUAL CL2 ANALYZERS |
3 |
| METHOD OF MIXING HYPOCHLORITE & EFFLUENT |
MECHANICAL |
| NO. OF MIXERS |
2 IN SERIES |
| CAPACITY PER MIXER, MGD |
62.5 |
| |
|
DECHLORINATION SYSTEM
| METHOD |
SODIUM BISULFITE SOLUTION |
| MIXING METHOD |
NATURAL TURBULENCE |
| SBS/CL2 RATIO |
1.5 |
| BISULFITE SUPPLY |
2 - 6,000 GALLON TANKS |
| |
|
DAF SLUDGE THICKENERS
| TYPE |
RECTANGULAR, DISSOLVED AIR |
| NO. OF TANKS |
2 |
| OPERATING MODE |
CONTINUOUS |
| NET SURFACE AREA/TANK, FT2 |
400 |
| TOTAL SURFACE AREA, FT2 |
800 |
| SIDEWATER DEPTH, FT2 |
8.0 |
| SOLIDS LOADING RATE, LBS/FT2/HR: |
|
| |
@ 10 MGD |
0.44 |
| |
@ 30 MGD |
0.82 |
| HYDRAULIC LOADING RATE, GPM/FT2 WITH RECYCLE: |
|
| |
@ 10 MGD |
0.45 |
| |
@ 30 MGD |
0.88 |
| AIR: SOLID RATIO @ 30 MGD |
0.03 |
| |
|
ANAEROBIC DIGESTERS
| TYPE |
HIGH RATE, FLOATING ROOF |
| NUMBER |
2 |
| DIAMETER, FT. |
80 |
| SIDEWATER DEPTH, FT. |
26 |
| ACTIVE DIGESTER VOLUME, FT3: |
|
| |
EACH |
130,700 |
| |
TOTAL |
261,400 |
| SLUDGE FLOW RATE, GPD: |
|
| |
@ 10 MGD |
53,300 |
| |
@ 30 MGD |
110,700 |
| SOLIDS LOADING, LBS/DAY: |
|
| |
@ 10 MGD |
17,925 |
| |
@ 30 MGD |
37,200 |
| INFLUENT SLUDGE SOLIDS CONC., % |
4 |
| VSS LOADING, LBS/DAY: |
|
| |
@ 10 MGD |
14,570 |
| |
@ 30 MGD |
28,650 |
| DETENTION TIME (2 DIGESTERS), DAYS: |
|
| |
@ 10 MGD |
36.6 |
| |
@ 30 MGD |
17.7 |
| VSS UNIT LOADING, LBS/DAY/1,000 FT3: |
|
| |
1 DIGESTER @ 10 MGD |
111.5 |
| |
1 DIGESTER @ 30 MGD |
219.0 |
| |
2 DIGESTERS @ 10 MGD |
55.8 |
| |
2 DIGESTERS @ 30 MGD |
109.6 |
| MINIMUM OPERATING TEMPERATURE, °F |
95 |
| METHOD OF SLUDGE MIXING |
GAS |
| NO. OF MIXING GAS COMPRESSORS |
4 |
| NO. OF SLUDGE HEAT EXCHANGERS |
2 |
| |
|
SLUDGE DEWATERING EQUIPMENT
| TYPE |
HIGH SPEED, SOLID BOWL CENTRIFUGES |
| NUMBER |
3 |
| FEED SLUDGE AVG . CONCENTRATION, % |
2.5 |
| SLUDGE CAKE AVG. CONCENTRATION, % |
25 |
| SLUDGE LOADING, LBS/DAY: |
|
| |
@ 10 MGD |
9,920 |
| |
@ 30 MGD |
21,440 |
| LOADING RATE PER CENTRIFUGE, LBS/HR 2 CENTRIFUGES ONLY |
|
| |
@ 10 MGD |
620 |
| |
@ 30 MGD |
1,340 |
| |
|
EFFLUENT HOLDING POND
| TYPE |
EARTH POND WITH HYPALON LINED EMBANKMENT |
| CAPACITY, MILLION GALLONS |
4.0± |
| MAX. WATER DEPTH, FT. |
8.0 |
| FREEBOARD, FT. |
3.0 |
| EMBANKMENT SLOPE: |
|
| |
HORIZONTAL : VERTICAL |
3:1 |
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