Struvite
5/24/2017
OPTIONS FOR SIDESTREAM PHOSPHORUS TREATMENT FOX RIVER WATER RECLAMATION DISTRICT BETH VOGT, JACK RUSSELL AND JAMES KERRIGAN FOX RIVER WATER RECLAMATION DISTRICT STEVE ARANT AND JAMES BARNARD BLACK & VEATCH
Central States WEA Annual Conference May 24, 2017 Saint Paul MN
AGENDA FRWRD Water Reclamation Facilities Fox River Implementation Plan and Effluent Phosphorus Limits Drivers for sidestream phosphorus removal Background on Struvite and Brushite Solubility Alternatives for sidestream phosphorus removal Fox River WRD evaluations 2
FOX RIVER WRD WATER RECLAMATION FACILITIES
IWPC | FRWRD Fermenters and Sidestream Phosphorus Removal
North WRF 7.75 mgd
ADP WRF 25 mgd
West WRF 5.0 mgd
4/25/2017
FOX RIVER IMPLEMENTATION PLAN AND EFFLUENT PHOSPHORUS LIMITS
IWPC | FRWRD Fermenters and Sidestream Phosphorus Removal
4/25/2017
NUTRIENT PLANNING • Fox River Study Group formed in 2001 • Preparation of Fox River Implementation Plan / TMDL • Address low dissolved oxygen and algae
• Current limit 1.0 mg/L TP annual average
• Planning performed at 0.5 mg/L, 0.3 mg/L and 0.1 mg/L TP, and 10 mg/L TN
IWPC | FRWRD Fermenters and Sidestream Phosphorus Removal
Phased Approach (example ADP WRF)
4/25/2017
IWPC | FRWRD Fermenters and Sidestream Phosphorus Removal
RECOMMENDED UPGRADES ADP WRF
Chemical Feed only needed for 1.0 mg/L monthly limit
4/25/2017
DRIVERS FOR SIDESTREAM PHOSPHORUS REMOVAL
DRIVERS FOR SIDESTREAM PHOSPHORUS REMOVAL • Reduce P & N recycle loads • Minimize nuisance scaling and deposits • Improve/recovery biosolids dewaterability • Recover fertilizer product • Decrease P content of biosolids
BACKGROUND ON STRUVITE SOLUBILITY AND IMPACTS TO DEWATERING
STRUVITE SOLUBILITY • Struvite Reactor pH 7.5 to 8.5 • NH4-N+ and Mg2+ at optimum ionic form • Low activity of PO4-P 3-
Struvite - MgNH4PO4.6H2O Solubility Product, Ksp= [Mg2+]*[NH4+-N]*[PO43--P]
Need to monitor for ionic strength (conductivity/dissolved solids)
12
STRUVITE SOLUBILITY • Struvite less soluble above and below 35 °C
MD. IQBAL HOSSAIN BHUIYAN M.Sc, UENSCO-IHE Institute for Water Education, 2002
13
DEWATERING • Plants that have converted to Bio-P have experienced deterioration in dewatering performance • Lower cake solids • Higher polymer dose
• Two competing theories • High orthoP • High monovalent
Residual ortho-P or MV/DV cation ratio?
14
ALTERNATIVES FOR SIDESTREAM PHOSPHORUS REMOVAL
FRWRD | Phosphorus Removal Improvements Project
8/29/2016
ALTERNATIVES FOR SIDESTREAM PHOSPHORUS REMOVAL Technology
AirPrex TM NuReSys TM Ostara TM Multiform Harvest TM
Number of Municipal Installations
6 Operational (Europe) 3 In final design (US) 3 Operational (Europe) 14 2 2 1
Operational (US) In construction/design Operational (US) In construction
Date of First Municipal Installation 2009 2013 (first industrial 2006) 2007 2012
16
OSTARA • Leader in P recovery •
14 in operation
• Produces struvite “Pearl” • Two general flow schemes • •
Recover on centrate Recover on centrate + filtrate (WASSTRIP)
• WASSTRIP • •
Maximizes P recovery $300 to $400 per dry ton
• Reactor has recycle •
Lowers concentrations and increases size of reactor
OSTARA • WASSTRIP • Maximizes P recovery • $300 to $400 per dry ton
• Reduces struvite scaling potential, but may not eliminate it • Reduces impacts to dewatering? • WASSTRIP more complex process than recovering from centrate. • Need for additional WAS thickening process Stickney Ostara Reactor with Recycle Pumps
MULTIFORM HARVEST • Two general flow schemes • Recover on centrate • Recover on centrate + filtrate (MultiWAS) • Alternative flow schemes for MultiWAS
• No recycle flow • High concentrations reduces size of reactor
• MultiWAS •
Maximizes P recovery
•
$200 to $375 per dry ton
• Produces struvite crystals suitable for fertilizer blender
MULTIFORM HARVEST
ALTERNATIVE MULTIWAS?
MULTIFORM HARVEST • MultiWAS • Maximizes P recovery • $200 to $375 per dry ton
• Reduces struvite scaling potential, but may not eliminate it • Reduces impacts to dewatering? • MultiWAS more complex process than recovering from centrate. • Need for additional WAS thickening process
West Boise Multiform Reactor
AIRPREX • Precipitates struvite within digested sludge • Sequestration: crystals remain in biosolids • Recovery: crystals separated from biosolids • Alternative flow schemes available
• Air added to release CO2 and raise pH • MgCl2 is added to control effluent phosphate
• “Grit washer” used for struvite recovery • Up to $150 per dry ton
AIRPREX • Recovers dewatering to near pre-BioP levels • Reduces/eliminates struvite scaling • Up to $150 per dry ton • No full scale installations in US, 6 full scale in Europe • Numerous pilots in US, three plants in final design • Reduced chemical needs • Recovery of up to 50% of struvite crystals AirPrex Reactor Berlin Water
MGCL2 DOSAGE AND SCALING POTENTIAL PO4-P3-
NH4-N+
Mg2+ %Saturation Courtesy Dr. Zhongtian Li, CNP
24
NURESYS • Precipitates struvite within digested sludge • Alternative schemes available • CO2 Release Tank • Air added to release CO2 and raise pH • Precipitate struvite with residual Mg • Struvite Reactor/Settler • MgCl2 is added to control effluent phosphate • Cyclone used for struvite recovery
25
NURESYS • Recovers dewatering to near pre-BioP levels • Reduces/eliminates struvite scaling • Currently does not offer revenue for product • No full scale in US • Three full scale in Europe
CO2 Release Struvite Reactor/Settler
• Reactor/Settler reduces reactor size • Smaller add on for recovery • Recovery of up to 50% of struvite crystals
NuReSys Pilot Stevens Point
EVALUATION OF SIDESTREAM PHOSPHORUS REMOVAL
PROCESS MODELING FOR ADP WRF • Two scenarios modeled • WASSTRIP (Ostara, Multiform Harvest) • Digestate (AirPrex, NuReSys) • Albin D Pagorski (ADP) WRF • Regional solids handling facility • ADP WRF - 25 mgd • North WRF - 7.7 mgd • West WRF - 10 mgd 28
WAS STRIP OP 280lb/d TP 670 lb/d MAP 0 lb/d
OP 490 lb/d TP 980 lb/d MAP 0 lb/d Raw Influent
OP 60 lb/d TP 460 lb/d MAP 0 lb/d OX1
AN1
PreAX2
AN2
AN3
OX2
OP 220 lb/d TP 240 lb/d MAP 0 lb/d
OP 50 lb/d TP 110 lb/d MAP 0 lb/d
OX3
Effluent
AN4
PreAX1
P release Tank Digester
Struvite Reactor
Fermenter MgCl2
Sludge from N Sewer N1
Sludge from W
Sewer N2
Sewer W1
Sewer N3
Sewer W2
OP 20 lb/d TP 300 lb/d MAP 0 lb/d
Sewer N4
Sewer N5
Sewer W3
BioSolids
Sewer N6
Sewer W4
OP 40 lb/d TP 590 lb/d MAP 0 lb/d
Struvite
OP 540 lb/d TP 1320 lb/d MAP530 lb/d
OP 140 lb/d TP 890 lb/d MAP500 lb/d
Digester OrthoP (OP to dewatering) = 370 mg/L
OP 10 lb/d TP 610 lb/d MAP4230 lb/d
29
STRUVITE REACTOR ON DIGESTATE OP 0 lb/d TP 800 lb/d MAP 0 lb/d
OP 490 lb/d TP 980 lb/d MAP 0 lb/d Raw Influent
OX1 AN1
PreAX2
AN2
OX2
OP 20 lb/d TP 80 lb/d MAP 0 lb/d
OX3
Effluent
AN3
PreAX1
RAS DO Entrainment
Digester
Struvite Reactor BioSolids
Fermenter
Sludge from N Sewer N1 Sewer N2
Sludge from W
Sewer W1
Sewer N3
Sewer W2
OP 30 lb/d TP 280 lb/d MAP 0 lb/d
MgCl2
Sewer N4
Sewer W3
Sewer N5
Sewer N6
Sewer W4
OP 40 lb/d TP 530 lb/d MAP 0 lb/d
OP 710 lb/d TP 1610 lb/d MAP840 lb/d
OP 50 lb/d TP 1610 lb/d MAP6040 lb/d
Struvite Reactor OrthoP (OP to dewatering) = 30 mg/L
OP 10 lb/d TP 1500 lb/d MAP5860 lb/d
30
RESULTS • WAS STRIP process results in relatively high orthoP concentrations to dewatering • Risk of struvite scaling and dewaterability issues • Struvite reactor on digestate is anticipated to recover dewatered cake solids to prebioP levels • Struvite recovery • WASSTRIP ~ 4,000 lb/d as MAP • Digestate ~ 2,800 lb/d as MAP • Phosphorus content of cake • WASSTRIP 1.8% P • Digestate 2.8% P w/o recovery, 2.1% P w/ recovery
31
DEWATERING • Monovalent to Divalent Cation Ratio • Higgins and Novak
• Divalent cations bridge negatively charged extracellular polymeric substances • Threshold for poor settling/dewatering • MVeq/DVeq > 2.0 (based on equivalents, DV *2) 32
CONVENTIONAL PLANT – NO BIOP
MV/DV = 1.12
33
BIO-P PLANT
MV/DV = 2.29
Release of K in Digester increases MV/DV Mg and Ca precipitate as phosphates
34
WAS STRIP
MV/DV = 2.18
Remaining K and Mg still released in Digester Mg drops out as Struvite
35
AIRPREX
MV/DV = 1.11 Magnesium added prior to dewatering
36
AIRPREX – ORTHO-P TO DEWATERING VS. MONOVALENT/DIVALENT CATIONS
Need to monitor for Mg, Ca, Na and K
37
3.0 2.0 1.0 0.0
Monovalent/Divalent
FOR AIRPREX PROCESS
38
DESCRIPTION
MULTIFORM HARVEST™
OSTARA PEARL™
Total Probable Construction $17,400,000 $32,800,000 Cost
AIRPREX™
NURESYS™
AIRPREX™
PHOSPHORUS PHOSPHORUS PHOSPHORUS SEQUESTRATION SEQUESTRATION RECOVERY
NURESYS™
NURESYS™
PHOSPHOURS RECOVERY IN SLUDGE STREAM
PHOSPHORUS RECOVERY IN FILTRATE
$10,800,000
$10,600,000
$14,300,000
$11,100,000
$10,600,000
O&M Cost Chemicals
$197,000
$175,000
$175,000
$175,000
$175,000
$175,000
$120,000
Biosolids Management Cost Savings
($88,000)
($88,000)
($153,000)
($153,000)
($184,000)
($184,000)
($45,000)
Revenue Generated (fertilizer)
($112,000)
($169,000)
-
-
($76,000)
-
-
$87,000
$8,000
$82,000
$82,000
($25,000)
$51,000
$135,000
$199,000
$8,000
$82,000
$82,000
($25,000)
$51,000
$135,000
$11,100,000
$10,800,000
$13,200,000
$10,900,000
$11,500,000
Net Annual O&M Costs including Revenue Net Annual O&M Costs including Guaranteed Revenue Present Worth Costs Total Present Worth Costs including Revenue
$17,200,000 $30,900,000
Operating Parameters Phosphorus Content of Biosolids
1.9%
1.9%
2.8%
2.8%
2.3%
2.3%
1.9%
Volume of Biosolids Produced
6,000 ft3/d
6,000 ft3/d
5,400 ft3/d
5,400 ft3/d
5,100 ft3/d
5,100 ft3/d
6,400 ft3/d
Struvite Recovered
3,900 lb/d
3,900 lb/d
-
-
2, 300 lb/d
2,300 lb/d
3,700 lb/d
39
www.bv.com
5/24/2017
OPTIONS FOR SIDESTREAM PHOSPHORUS TREATMENT FOX RIVER WATER RECLAMATION DISTRICT Central States WEA BETH VOGT, JACK RUSSELL AND JAMES KERRIGAN FOX RIVER WATER RECLAMATION DISTRICT STEVE ARANT AND JAMES BARNARD BLACK & VEATCH
Annual Conference May 24, 2017 Saint Paul MN
IWPC | FRWRD Fermenters and Sidestream Phosphorus Removal
Fox River Implementation Plan Flow Duration Curve for June-September (WY1960-2009) Flow Duration Curve
WQS Compliant Flow Rates
1000.0
Flow Rate (cms)
100.0
10.0
1.0
0.1 0
10
20
30
40
50
60
% of Time Flow Exceeded
70
80
90
100
4/25/2017
9 March 2017
ADP WRF PERFORMANCE Effluent OrthoP
Effluent Total P
Based Case, No phosphorus removal
4.0 mgP/L
4.1 mgP/L
BioP (no fermenter, no struvite reactor)
3.2 mgP/L
3.6 mgP/L
BioP with fermenter (no struvite reactor)
2.5 mgP/L
3.0 mgP/L
BioP with struvite reactor (no fermenter)
1.5 mgP/L
1.8 mgP/L
BioP with fermenter and struvite reactor
0.1 mgP/L
0.5 mgP/L
OPTIONS FOR SIDESTREAM PHOSPHORUS TREATMENT FOX RIVER WATER RECLAMATION DISTRICT BETH VOGT, JACK RUSSELL AND JAMES KERRIGAN FOX RIVER WATER RECLAMATION DISTRICT STEVE ARANT AND JAMES BARNARD BLACK & VEATCH
Central States WEA Annual Conference May 24, 2017 Saint Paul MN
AGENDA FRWRD Water Reclamation Facilities Fox River Implementation Plan and Effluent Phosphorus Limits Drivers for sidestream phosphorus removal Background on Struvite and Brushite Solubility Alternatives for sidestream phosphorus removal Fox River WRD evaluations 2
FOX RIVER WRD WATER RECLAMATION FACILITIES
IWPC | FRWRD Fermenters and Sidestream Phosphorus Removal
North WRF 7.75 mgd
ADP WRF 25 mgd
West WRF 5.0 mgd
4/25/2017
FOX RIVER IMPLEMENTATION PLAN AND EFFLUENT PHOSPHORUS LIMITS
IWPC | FRWRD Fermenters and Sidestream Phosphorus Removal
4/25/2017
NUTRIENT PLANNING • Fox River Study Group formed in 2001 • Preparation of Fox River Implementation Plan / TMDL • Address low dissolved oxygen and algae
• Current limit 1.0 mg/L TP annual average
• Planning performed at 0.5 mg/L, 0.3 mg/L and 0.1 mg/L TP, and 10 mg/L TN
IWPC | FRWRD Fermenters and Sidestream Phosphorus Removal
Phased Approach (example ADP WRF)
4/25/2017
IWPC | FRWRD Fermenters and Sidestream Phosphorus Removal
RECOMMENDED UPGRADES ADP WRF
Chemical Feed only needed for 1.0 mg/L monthly limit
4/25/2017
DRIVERS FOR SIDESTREAM PHOSPHORUS REMOVAL
DRIVERS FOR SIDESTREAM PHOSPHORUS REMOVAL • Reduce P & N recycle loads • Minimize nuisance scaling and deposits • Improve/recovery biosolids dewaterability • Recover fertilizer product • Decrease P content of biosolids
BACKGROUND ON STRUVITE SOLUBILITY AND IMPACTS TO DEWATERING
STRUVITE SOLUBILITY • Struvite Reactor pH 7.5 to 8.5 • NH4-N+ and Mg2+ at optimum ionic form • Low activity of PO4-P 3-
Struvite - MgNH4PO4.6H2O Solubility Product, Ksp= [Mg2+]*[NH4+-N]*[PO43--P]
Need to monitor for ionic strength (conductivity/dissolved solids)
12
STRUVITE SOLUBILITY • Struvite less soluble above and below 35 °C
MD. IQBAL HOSSAIN BHUIYAN M.Sc, UENSCO-IHE Institute for Water Education, 2002
13
DEWATERING • Plants that have converted to Bio-P have experienced deterioration in dewatering performance • Lower cake solids • Higher polymer dose
• Two competing theories • High orthoP • High monovalent
Residual ortho-P or MV/DV cation ratio?
14
ALTERNATIVES FOR SIDESTREAM PHOSPHORUS REMOVAL
FRWRD | Phosphorus Removal Improvements Project
8/29/2016
ALTERNATIVES FOR SIDESTREAM PHOSPHORUS REMOVAL Technology
AirPrex TM NuReSys TM Ostara TM Multiform Harvest TM
Number of Municipal Installations
6 Operational (Europe) 3 In final design (US) 3 Operational (Europe) 14 2 2 1
Operational (US) In construction/design Operational (US) In construction
Date of First Municipal Installation 2009 2013 (first industrial 2006) 2007 2012
16
OSTARA • Leader in P recovery •
14 in operation
• Produces struvite “Pearl” • Two general flow schemes • •
Recover on centrate Recover on centrate + filtrate (WASSTRIP)
• WASSTRIP • •
Maximizes P recovery $300 to $400 per dry ton
• Reactor has recycle •
Lowers concentrations and increases size of reactor
OSTARA • WASSTRIP • Maximizes P recovery • $300 to $400 per dry ton
• Reduces struvite scaling potential, but may not eliminate it • Reduces impacts to dewatering? • WASSTRIP more complex process than recovering from centrate. • Need for additional WAS thickening process Stickney Ostara Reactor with Recycle Pumps
MULTIFORM HARVEST • Two general flow schemes • Recover on centrate • Recover on centrate + filtrate (MultiWAS) • Alternative flow schemes for MultiWAS
• No recycle flow • High concentrations reduces size of reactor
• MultiWAS •
Maximizes P recovery
•
$200 to $375 per dry ton
• Produces struvite crystals suitable for fertilizer blender
MULTIFORM HARVEST
ALTERNATIVE MULTIWAS?
MULTIFORM HARVEST • MultiWAS • Maximizes P recovery • $200 to $375 per dry ton
• Reduces struvite scaling potential, but may not eliminate it • Reduces impacts to dewatering? • MultiWAS more complex process than recovering from centrate. • Need for additional WAS thickening process
West Boise Multiform Reactor
AIRPREX • Precipitates struvite within digested sludge • Sequestration: crystals remain in biosolids • Recovery: crystals separated from biosolids • Alternative flow schemes available
• Air added to release CO2 and raise pH • MgCl2 is added to control effluent phosphate
• “Grit washer” used for struvite recovery • Up to $150 per dry ton
AIRPREX • Recovers dewatering to near pre-BioP levels • Reduces/eliminates struvite scaling • Up to $150 per dry ton • No full scale installations in US, 6 full scale in Europe • Numerous pilots in US, three plants in final design • Reduced chemical needs • Recovery of up to 50% of struvite crystals AirPrex Reactor Berlin Water
MGCL2 DOSAGE AND SCALING POTENTIAL PO4-P3-
NH4-N+
Mg2+ %Saturation Courtesy Dr. Zhongtian Li, CNP
24
NURESYS • Precipitates struvite within digested sludge • Alternative schemes available • CO2 Release Tank • Air added to release CO2 and raise pH • Precipitate struvite with residual Mg • Struvite Reactor/Settler • MgCl2 is added to control effluent phosphate • Cyclone used for struvite recovery
25
NURESYS • Recovers dewatering to near pre-BioP levels • Reduces/eliminates struvite scaling • Currently does not offer revenue for product • No full scale in US • Three full scale in Europe
CO2 Release Struvite Reactor/Settler
• Reactor/Settler reduces reactor size • Smaller add on for recovery • Recovery of up to 50% of struvite crystals
NuReSys Pilot Stevens Point
EVALUATION OF SIDESTREAM PHOSPHORUS REMOVAL
PROCESS MODELING FOR ADP WRF • Two scenarios modeled • WASSTRIP (Ostara, Multiform Harvest) • Digestate (AirPrex, NuReSys) • Albin D Pagorski (ADP) WRF • Regional solids handling facility • ADP WRF - 25 mgd • North WRF - 7.7 mgd • West WRF - 10 mgd 28
WAS STRIP OP 280lb/d TP 670 lb/d MAP 0 lb/d
OP 490 lb/d TP 980 lb/d MAP 0 lb/d Raw Influent
OP 60 lb/d TP 460 lb/d MAP 0 lb/d OX1
AN1
PreAX2
AN2
AN3
OX2
OP 220 lb/d TP 240 lb/d MAP 0 lb/d
OP 50 lb/d TP 110 lb/d MAP 0 lb/d
OX3
Effluent
AN4
PreAX1
P release Tank Digester
Struvite Reactor
Fermenter MgCl2
Sludge from N Sewer N1
Sludge from W
Sewer N2
Sewer W1
Sewer N3
Sewer W2
OP 20 lb/d TP 300 lb/d MAP 0 lb/d
Sewer N4
Sewer N5
Sewer W3
BioSolids
Sewer N6
Sewer W4
OP 40 lb/d TP 590 lb/d MAP 0 lb/d
Struvite
OP 540 lb/d TP 1320 lb/d MAP530 lb/d
OP 140 lb/d TP 890 lb/d MAP500 lb/d
Digester OrthoP (OP to dewatering) = 370 mg/L
OP 10 lb/d TP 610 lb/d MAP4230 lb/d
29
STRUVITE REACTOR ON DIGESTATE OP 0 lb/d TP 800 lb/d MAP 0 lb/d
OP 490 lb/d TP 980 lb/d MAP 0 lb/d Raw Influent
OX1 AN1
PreAX2
AN2
OX2
OP 20 lb/d TP 80 lb/d MAP 0 lb/d
OX3
Effluent
AN3
PreAX1
RAS DO Entrainment
Digester
Struvite Reactor BioSolids
Fermenter
Sludge from N Sewer N1 Sewer N2
Sludge from W
Sewer W1
Sewer N3
Sewer W2
OP 30 lb/d TP 280 lb/d MAP 0 lb/d
MgCl2
Sewer N4
Sewer W3
Sewer N5
Sewer N6
Sewer W4
OP 40 lb/d TP 530 lb/d MAP 0 lb/d
OP 710 lb/d TP 1610 lb/d MAP840 lb/d
OP 50 lb/d TP 1610 lb/d MAP6040 lb/d
Struvite Reactor OrthoP (OP to dewatering) = 30 mg/L
OP 10 lb/d TP 1500 lb/d MAP5860 lb/d
30
RESULTS • WAS STRIP process results in relatively high orthoP concentrations to dewatering • Risk of struvite scaling and dewaterability issues • Struvite reactor on digestate is anticipated to recover dewatered cake solids to prebioP levels • Struvite recovery • WASSTRIP ~ 4,000 lb/d as MAP • Digestate ~ 2,800 lb/d as MAP • Phosphorus content of cake • WASSTRIP 1.8% P • Digestate 2.8% P w/o recovery, 2.1% P w/ recovery
31
DEWATERING • Monovalent to Divalent Cation Ratio • Higgins and Novak
• Divalent cations bridge negatively charged extracellular polymeric substances • Threshold for poor settling/dewatering • MVeq/DVeq > 2.0 (based on equivalents, DV *2) 32
CONVENTIONAL PLANT – NO BIOP
MV/DV = 1.12
33
BIO-P PLANT
MV/DV = 2.29
Release of K in Digester increases MV/DV Mg and Ca precipitate as phosphates
34
WAS STRIP
MV/DV = 2.18
Remaining K and Mg still released in Digester Mg drops out as Struvite
35
AIRPREX
MV/DV = 1.11 Magnesium added prior to dewatering
36
AIRPREX – ORTHO-P TO DEWATERING VS. MONOVALENT/DIVALENT CATIONS
Need to monitor for Mg, Ca, Na and K
37
3.0 2.0 1.0 0.0
Monovalent/Divalent
FOR AIRPREX PROCESS
38
DESCRIPTION
MULTIFORM HARVEST™
OSTARA PEARL™
Total Probable Construction $17,400,000 $32,800,000 Cost
AIRPREX™
NURESYS™
AIRPREX™
PHOSPHORUS PHOSPHORUS PHOSPHORUS SEQUESTRATION SEQUESTRATION RECOVERY
NURESYS™
NURESYS™
PHOSPHOURS RECOVERY IN SLUDGE STREAM
PHOSPHORUS RECOVERY IN FILTRATE
$10,800,000
$10,600,000
$14,300,000
$11,100,000
$10,600,000
O&M Cost Chemicals
$197,000
$175,000
$175,000
$175,000
$175,000
$175,000
$120,000
Biosolids Management Cost Savings
($88,000)
($88,000)
($153,000)
($153,000)
($184,000)
($184,000)
($45,000)
Revenue Generated (fertilizer)
($112,000)
($169,000)
-
-
($76,000)
-
-
$87,000
$8,000
$82,000
$82,000
($25,000)
$51,000
$135,000
$199,000
$8,000
$82,000
$82,000
($25,000)
$51,000
$135,000
$11,100,000
$10,800,000
$13,200,000
$10,900,000
$11,500,000
Net Annual O&M Costs including Revenue Net Annual O&M Costs including Guaranteed Revenue Present Worth Costs Total Present Worth Costs including Revenue
$17,200,000 $30,900,000
Operating Parameters Phosphorus Content of Biosolids
1.9%
1.9%
2.8%
2.8%
2.3%
2.3%
1.9%
Volume of Biosolids Produced
6,000 ft3/d
6,000 ft3/d
5,400 ft3/d
5,400 ft3/d
5,100 ft3/d
5,100 ft3/d
6,400 ft3/d
Struvite Recovered
3,900 lb/d
3,900 lb/d
-
-
2, 300 lb/d
2,300 lb/d
3,700 lb/d
39
www.bv.com
5/24/2017
OPTIONS FOR SIDESTREAM PHOSPHORUS TREATMENT FOX RIVER WATER RECLAMATION DISTRICT Central States WEA BETH VOGT, JACK RUSSELL AND JAMES KERRIGAN FOX RIVER WATER RECLAMATION DISTRICT STEVE ARANT AND JAMES BARNARD BLACK & VEATCH
Annual Conference May 24, 2017 Saint Paul MN
IWPC | FRWRD Fermenters and Sidestream Phosphorus Removal
Fox River Implementation Plan Flow Duration Curve for June-September (WY1960-2009) Flow Duration Curve
WQS Compliant Flow Rates
1000.0
Flow Rate (cms)
100.0
10.0
1.0
0.1 0
10
20
30
40
50
60
% of Time Flow Exceeded
70
80
90
100
4/25/2017
9 March 2017
ADP WRF PERFORMANCE Effluent OrthoP
Effluent Total P
Based Case, No phosphorus removal
4.0 mgP/L
4.1 mgP/L
BioP (no fermenter, no struvite reactor)
3.2 mgP/L
3.6 mgP/L
BioP with fermenter (no struvite reactor)
2.5 mgP/L
3.0 mgP/L
BioP with struvite reactor (no fermenter)
1.5 mgP/L
1.8 mgP/L
BioP with fermenter and struvite reactor
0.1 mgP/L
0.5 mgP/L
