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The Hias Process: Next Generation EBPR
Anders T. ØfstiGeneral ManagerHias How2O AS
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Phosporus Removal: The Hias Process
Phosphorus Recovery: The Struvite Pathway
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Phosporus Removal: The Hias Process
Inlet: 7,0-8,0 mg PO4-P/l
Outlet: 0,17 mg PO4-P/l
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The Hias Process
• MBBR + EBPR
• Continuous flow system
• No pumping
• Lean design
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Vtot: 730 m3
Q: 55-165 m3/h
Capacity, pe: 10 000
Load:
7,0-8,0 mg TP/l
~800 mg COD/l
Out:
PO4-P: 0,17 mg/l (97%)
TP: 0,25 – 0,70 mg/l (> 90%)
The Hias ProcessDemonstration Plant since 2016
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The operational biology:PAO- Phosphorous Accumulating Organisms
Regular bacteria
contains 1-2 % P
PAO bacteria
contain up to 30 % P
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The Hias Process: Performance
0
10
20
30
40
50
60
70
30.5.16 7.9.16 16.12.16 26.3.17 4.7.17 12.10.17 20.1.18 30.4.18 8.8.18 16.11.18
PO
4 (m
g/l
)
Dato
mg/l PO4 In
PO4 Ana3
PO4 Out
Avg. PO4-P out: 0,17 mg/l
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Phosphorus Recovery: Struvite pathway
Primary sludge Bio-P sludge
P-releaseCambi THP
+
Anaerobic
digestionStruvite-reactor Struvite
PO4
NH4PO4
Class A
Biosolids
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The WWTP goes WRRF (Water Resource Recovery Facility)
WRRF: 4 corner stones
1) The Hias Process – Next Generation EBPR
2) The Nutrient Recovery Plant
3) The Cambi THP
4) The Biogas Upgrade Plant
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Thank you!
Contact:Anders T. ØfstiGeneral ManagerEmail: [email protected]: +47 47 32 70 92
mailto:[email protected]