The Hias Process: Next Generation EBPR...The Hias Process Demonstration Plant since 2016 The operational biology: PAO- Phosphorous Accumulating Organisms Regular bacteria contains

The Hias Process: Next Generation EBPR

Anders T. ØfstiGeneral ManagerHias How2O AS

Phosporus Removal: The Hias Process

Phosphorus Recovery: The Struvite Pathway

Phosporus Removal: The Hias Process

Inlet: 7,0-8,0 mg PO4-P/l

Outlet: 0,17 mg PO4-P/l

The Hias Process

• MBBR + EBPR

• Continuous flow system

• No pumping

• Lean design

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

The operational biology:PAO- Phosphorous Accumulating Organisms

Regular bacteria

contains 1-2 % P

PAO bacteria

contain up to 30 % P

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

Phosphorus Recovery: Struvite pathway

Primary sludge Bio-P sludge

P-releaseCambi THP

+

Anaerobic

digestionStruvite-reactor Struvite

PO4

NH4PO4

Class A

Biosolids

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

Thank you!

Contact:Anders T. ØfstiGeneral ManagerEmail: [email protected]: +47 47 32 70 92