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

2. Actiflo® Chemical precipitation Micro-sand enhanced flocculation
Actiflo® is a combination of:
Chemical precipitation
Micro-sand enhanced flocculation
Lamella sedimentation

3. Actiflo® - the Principle
Micro-sand
Primary particles
Coagulant
Polymer
Floc
Water

4. Actiflo® - Floc
150 m

5. 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

6. The Actiflo® Process Treated water Lamella sedimentation Maturation
Polymer
Injection
Coagulation
Coagulant
Water
Micro-sand
Sludge
Hydrocyclone M

7. Actiflo® - Design Criteria
Drinking water
Wastewater
Retention time:
Coagulation
2 min.
1 min.
Injection
Maturation
6 min.
Overflow rate:
m/h
m/h

8. Actiflo®
Special Components

9. Actiflo® - Sand Scraper
Scrapes the micro-sand and sludge to the centre of the lamella settler

10. Actiflo® - Recirculation Line
Transports the micro-sand and sludge from the lamella settler to the hydrocyclone
Sand pump
Centrifugal pump with rubber lining
Controlled flow proportional to inlet (approx. 4-6%)
Piping
Made of PE (poly-ethylene)

11. Actiflo® - Hydrocyclone
Separates the micro-sand and the sludge by means of the centrifugal force
Sludge
Micro-sand
and sludge

12. Actiflo® - Lamellas Short distance of sedimentation Laminar upflow
Made of plastic

13. Actiflo® - Dosing of Reagents
Coagulant
Dosed directly by pumps
Polymer
Matured in a preparation unit
Micro-sand
Dosed directly

14. Actiflo®
Characteristics

15. Actiflo® - Characteristics
High treatment efficiency
Efficient use of chemicals
Compact system
Short start-up time
Stable process
Versatility

16. 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%
50-90%
Orthophosphate
50-98%
Turbidity
< 99.9%

17. 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

18. Compact System
Conventional
(2 m/h)
Lamella type
(20 m/h)
Actiflo®

19. Short Start-up Time
Inlet
Outlet

20. Stable Process
Inlet
Outlet

21. Krüger’s Package Plants
Actifloc™
Actiflo®
(One line)
Model
m3/h
AFP1 40
APW1
APWW1 80
AFP2
APW2
APWW2
160
AFP3
APW3
APWW3
320
AFP4
APW4
APWW
640
APW: Drinking water and process water type, APWW: wastewater type

22. Applications Drinking water Wastewater Industry Surface water
Ground water
Wash water from filters
Wastewater
Primary
Tertiary
By-pass
Industry
Process water

23. Actiflo® - Installations
Drinking water
More than 170 installations
Smallest plant: 25 m3/h (Pakua Shipu, Canada)
Biggest plant: 40,000 m3/h (Selangor, Malaysia)
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

24. Actiflo®
Investigations

25. Actiflo® - Investigations
JAR-tests
Performed in laboratory
Indication of efficiency

26. Actiflo® - Investigations
Pilot studies
Performed on-site
Process optimisation
Necessary dosing
Efficiency
More than 40 studies performed by Krüger
Capacity :
m3/h

27. Actiflo® - Pilot Studies
Drinking water
Wastewater

28. Selected Pilot Studies
Actiflo®
Selected Pilot Studies

29. Jaslo, Poland Drinking water

30. Jaslo, Poland Drinking water
Dosages Coagulant: 1.0 mg Al/l Polymer: 0.30 mg/l

31. ZWA – Brauchwasserwerk Kriebethal, Germany Process water

32. ZWA – Brauchwasserwerk Kriebethal, Germany Process water
Dosages Coagulant: 1.0 mg Al/l Polymer: 0.30 mg/l

33. Karlskoga, Sweden CSO

34. Karlskoga, Sweden CSO
Dosages Coagulant: mg Fe/l Polymer: mg/l

35. Berliner Wasserbetriebe, Wasserwerk Friedrichshagen, Germany Filter backwash water

36. Berliner Wasserbetriebe, Wasserwerk Friedrichshagen, Germany Filter backwash water
Dosages Coagulant: mg Fe/l Polymer: mg/l

37. Kalmar, Sweden Wastewater, tertiary

38. Kalmar, Sweden Wastewater, tertiary
Dosages Coagulant: 2.0 – 4.0 mg Al/l Polymer: 0.70 mg/l

39. Selected Full-scale Installations
Actiflo®
Selected Full-scale Installations

40. GELITA Sweden AB Process water
Capacity: 320 m3/h
Contract signed in June 2004
Package plant in one line
Start-up in January 2005

41. GELITA Sweden AB Process water, 320 m3/h
Dosages Coagulant: 5.0 mg Al/l Polymer: 0.20 mg/l

42. Eslöv, Sweden Wastewater
Capacity: 250 m3/h
Contract signed in April 2004
Package plant in two lines
Start-up in January 2005

43. Eslöv, Sweden Wastewater, 250 m3/h
Dosages Coagulant: mg Fe/l Polymer: 2.0 mg/l

44. Bäckhammars Bruk, Kristinehamn, Sweden Process water, 2.000 m3/h

45. Bäckhammars Bruk, Kristinehamn, Sweden Process water, 2.000 m3/h
Raw water
7,5 m
Process Water
31 m

46. Bäckhammars Bruk, Kristinehamn, Sweden Process water, 2.000 m3/h
Dosages Coagulant: 6-7 mg Al/l Polymer: 0.3 mg/l

47. Borås, Sweden Wastewater, tertiary
5,400 m3/h
2,700 m3/h
Actiflo®
6.3 m
Existing lamella separators
27 m
Effluent
53 m

48. Borås, Sweden Wastewater, tertiary, 2,700 m3/h

49. Borås, Sweden Wastewater, tertiary, 2,700 m3/h
Dosages Coagulant: 6-10 mg Al/l Polymer: mg/l

50. Borås, Sweden Wastewater, tertiary, 2,700 m3/h

51. 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 (~ m3/h)