The Actiflo ® Process Introduction to - a compact solution for treatment of drinking water, process water and wastewater.

The ActifloThe Actiflo®® Process Process

Introduction to

- a compact solution for treatment of drinking water, process water and

wastewater

Actiflo®

• Actiflo® is a combination of:

- Chemical precipitation

- Micro-sand enhanced flocculation

- Lamella sedimentation

Actiflo® - the Principle

Primary particles

Coagulant

Water

Micro-sand Polymer

Floc

Actiflo® - Floc

150 m

Actiflo® - Consumables

• Coagulant

– Aluminium based

– Iron based

• Flocculant

– Organic polymer

– Anionic, non-ionic or cationic

• Micro-sand– Ordinary silica sand

– Effective size ~120 m

• Electricity

Treatedwater

Lamellasedimentation

Maturation

Polymer

InjectionCoagulation

Coagulant

Water

Micro-sand

Sludge

Hydrocyclone

M M M M

The Actiflo® Process

Actiflo® - Design Criteria

Drinking water Wastewater

Retention time:

Coagulation 2 min. 1 min.

Injection 2 min. 1 min.

Maturation 6 min. 2 min.

Overflow rate: 40 - 60 m/h 80 - 120 m/h

Actiflo®

Special ComponentsSpecial Components

• Scrapes the micro-sand and sludge to the centre of the lamella settler

Actiflo® - Sand Scraper

• Transports the micro-sand and sludge from the lamella settler to the hydrocyclone

Actiflo® - Recirculation Line

• Sand pump

– Centrifugal pump with rubber lining

– Controlled flow proportional to inlet (approx. 4-6%)

• Piping

– Made of PE (poly-ethylene)

Actiflo® - Hydrocyclone

• Separates the micro-sand and the sludge by means of the centrifugal force

Sludge

Micro-sandand sludge

Micro-sand

Actiflo® - Lamellas

• Short distance of sedimentation

• Laminar upflow

• Made of plastic

Actiflo® - Dosing of Reagents

• Coagulant

– Dosed directly by pumps

• Micro-sand

– Dosed directly

• Polymer

– Matured in a preparation unit

Actiflo®

CharacteristicsCharacteristics

Actiflo® - Characteristics

• High treatment efficiency

• Efficient use of chemicals

• Compact system

• Short start-up time

• Stable process

• Versatility

High Treatment Efficiency

Wastewater Recipient water

Drinking water

CSO Primary Tertiary

Suspended solids 80-98% 75-90% 50-80% 70-90% -

COD 65-90% 55-80% 20-50% 55-70% -

Total phosphorus 50-95% 50-95% 50-95% 50-90% -

Orthophosphate 50-98% 50-98% 50-98% 50-98% -

Turbidity - - - - < 99.9%

Electricity

Sand

Flocculant

Coagulant

Efficient Use of Chemicals

Price (EUR)

Coagulant 10 g Fe/m3 1.30 cent/m3

Flocculant 1.0 g/m3 0.40 cent/m3

Sand 4 g/m3 0.03 cent/m3

Electricity 30 Wh/m3 0.20 cent/m3

Total 1.93 cent/m3

Compact System

Conventional(2 m/h)

Lamella type

(20 m/h)

Actiflo ®

Short Start-up Time

0

50

100

150

200

250

300

0 5 10 15 20

Time, min.

SS

, mg

/l

Inlet

Outlet

0

50

100

150

200

250

300

350

Time

SS

, mg

/l

Stable Process

Inlet

Outlet

Krüger’s Package Plants

Actifloc™ Actiflo®

(One line) (One line)

Model m3/h Model m3/h Model m3/h

AFP1 40 APW1 40 APWW1 80

AFP2 80 APW2 80 APWW2 160

AFP3 160 APW3 160 APWW3 320

AFP4 320 APW4 320 APWW 640

APW: Drinking water and process water type, APWW: wastewater type

Applications

• Drinking water– Surface water

– Ground water

– Wash water from filters

• Wastewater– Primary

– Tertiary

– By-pass

• Industry– Process water

• Drinking water– More than 170 installations

– Smallest plant: 25 m3/h (Pakua Shipu, Canada)

– Biggest plant: 40,000 m3/h (Selangor, Malaysia)

Actiflo® - Installations

• Wastewater– More than 70 installations

– Smallest plant: 60 m3/h (Toyobo, Japan)

– Biggest plant: 110,000 m3/h (Acheres, France)

• Industry– More than 50 installations

InvestigationsInvestigations

Actiflo®

• JAR-tests

– Performed in laboratory

– Indication of efficiency

Actiflo® - Investigations

Actiflo® - Investigations

• Pilot studies

– Performed on-site

– Process optimisation

– Necessary dosing

– Efficiency

– More than 40 studies

performed by KrügerCapacity :

30-120 m3/h

Actiflo® - Pilot Studies

Drinking water

Wastewater

Selected Pilot StudiesSelected Pilot Studies

Actiflo®

Jaslo, PolandDrinking water

Jaslo, PolandDrinking water

Dosages Coagulant: 1.0 mg Al/l Polymer: 0.30 mg/l

Influent Effluent Removal

Turbidity

Suspended solids

Colour

COD

Aluminium

4-730 NTU

4-834 mg/l

18-45 mg/l

5.4-31.1 mg/l

0 mg/l

0.22-2.8 NTU

0-1 mg/l

1-5 mg/l

2.0-2.7 mg/l

0.05 mg/l

96-99%

99-100%

89-94%

61-93%

ZWA – Brauchwasserwerk Kriebethal, GermanyProcess water

ZWA – Brauchwasserwerk Kriebethal, GermanyProcess water



Turbidity

COD

Suspended solids

41-110 NTU

24-87 mg/l

110-310 mg/l

0.7-1.0 NTU

7-9 mg/l

5-15 mg/l

97-99%

70-89%

95%

Karlskoga, SwedenCSO

Dosages Coagulant: 20.0-35.0 mg Fe/l Polymer: 1.00-1.25 mg/l


Suspended solids

COD

BOD7

Total P

Ortho P

Total N

100-1,600 mg/l

200-500 mg/l

110-330 mg/l

4-10 mg/l

2-4 mg/l

40-50 mg/l

5-20 mg/l

50-120 mg/l

25-60 mg/l

0.1-0.5 mg/l

0.05-0.25 mg/l

35-40 mg/l

90-99%

60-80%

75-85%

90-99%

90-98%

15-20%

Karlskoga, SwedenCSO

Berliner Wasserbetriebe, WasserwerkFriedrichshagen, Germany

Filter backwash water

Dosages Coagulant: 6.0-10.0 mg Fe/l Polymer: 0.25-0.30 mg/l


Turbidity

Suspended solids

Mn

Fe

168-660 NTU

100-190 mg/l

2.1-5.1 mg/l

30-74 mg/l

0.7-2.5 NTU

0.4-3.1 mg/l

0.1-0.17 mg/l

0.32-0.64 mg/l

99%

97-99%

96-99%

99%

Berliner Wasserbetriebe, WasserwerkFriedrichshagen, Germany

Filter backwash water

Kalmar, SwedenWastewater, tertiary

Kalmar, SwedenWastewater, tertiary

Dosages Coagulant: 2.0 – 4.0 mg Al/l Polymer: 0.70 mg/l


Suspended solids

Total phosphorus

Orthophosphate

2-6 mg/l

0.6-1.6 mg P/l

0.4-1.5 mg P/l

2-4 mg/l

0.1-0.2 mg/l

0.03-0.10 mg P/l

0-50%

80-90%

90-95%

Selected Full-scale InstallationsSelected Full-scale Installations

Actiflo®

GELITA Sweden ABProcess water

• Capacity: 320 m3/h

• Contract signed in June 2004

• Package plant in one line

• Start-up in January 2005



Turbidity

COD-Mn

Total colour

Filt. colour

5-11 NTU

11 mg/l

100-150 mg Pt/l

100 mg Pt/l

0.3-0.4 NTU

2.0 mg/l

2.5-10 mg Pt/l

2.5-5.0 mg Pt/l

90-97%

80%

90-98%

90-97%

GELITA Sweden ABProcess water, 320 m3/h

• Capacity: 250 m3/h

• Contract signed in April 2004

• Package plant in two lines

• Start-up in January 2005

Eslöv, SwedenWastewater

Dosages Coagulant: 40-80 mg Fe/l Polymer: 2.0 mg/l


Suspended solids

COD-total

Total-P

N-kj.

240-810 mg/l

1,200-2,500 mg/l

18-22 mg P/l

90-100 mg N/l

40-100 mg/l

400-1,600 mg/l

3-5 mg P/l

20-35 mg N/l

75-95%

25-70%

70-85%

70-80%

Eslöv, SwedenWastewater, 250 m3/h

Bäckhammars Bruk, Kristinehamn, SwedenProcess water, 2.000 m3/h


Process Water

Raw water

7,5 m

31 m

Influent Effluent Reduction

Turbidity

Colour

COD

KMnO4

Temperature

-

140-200 mg Pt/l

45-60 mg/l

80-110 mg/l

1oC

<0,3 FTU

<10 mg Pt/l

10-15 mg/l

20 mg/l

-

-

90-95%

70-80%

70-80%

-

Dosages Coagulant: 6-7 mg Al/l Polymer: 0.3 mg/l


Effluent

Existing lamella separators

5,400 m3/h

27 m

53 m

2,700 m3/h 2,700 m3/h

Actiflo®

6.3 m

Borås, SwedenWastewater, tertiary

Borås, SwedenWastewater, tertiary, 2,700 m3/h


Suspended solids

Total phosphorous

Ortho-phosphate

5-50 mg/l

0.7-1.5 mg P/l

0.2-1.0 mg P/l

3-10 mg/l

0.05-0.20 mg P/l

0.01-0.15 mg P/l

40-80%

85-95%

85-95%


Dosages Coagulant: 6-10 mg Al/l Polymer: 0.7-1.0 mg/l


Actiflo® Conclusion

• Versatile process

• Some of the advantages are :

– Compact system small foot print low installation costs

– High treatment efficiency superior effluent quality

– Flexible process easy to optimise

– Short start-up time almost no “dead time”

– Stable process handles extreme conditions

– Simple easy to operate

• Well documented efficiency

– More than 300 installations since 1991 (~ 970.000 m3/h)

The Actiflo ® Process Introduction to - a compact solution for treatment of drinking water, process water and wastewater.

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