Techno Business Units

  • ANOXKALDNES
  • AQUAFLOW
  • BIOSOLIDS
  • BIOTHANE
  • EVALED
  • HYDROTECH
  • IDRAFLOT
  • IDRASCREEN
  • PMT

Filtraflo™ Range

Rapid gravitational filtration

All Filtraflo™ filters employ the same basic principle that involves a rapid gravitational filtration of raw water through a granular media. The filtering bed is composed of single or dual media layers.

Depending on the quality of water to be treated and the filtering objectives, different filtering media can be employed : sand, activated carbon, anthracite, pumice, shale, limestone, etc...

Multiple Function Filters:

  • Physical function : retention of suspended particles (suspended solids, iron and manganese precipitate.)
  • Physical-chemical : adsorption of micro pollutants (pesticides, detergents, chlorinated solvents, sapid components, etc.)
  • Manganese removal with manganese dioxide.
  • Biological function : biodegradation of organic carbon Oxidation of ammonia, iron, manganese , Denitrification.
  • Chemical function : acidity correction with calcium.

 

Filtraflo™ filters differ by their technological characteristics that adapt to specific water treatment demands and to the type of water to be treated, and facilitate integration into the overall water production line.

 

Features and benefits

Filtraflo™ filters offer an advanced filtration solution which involves a rapid filtration of raw water through a specific media, the filtering bed being composed of single or multiple media layers.

  • Sand filtration requires a coagulant, such as ferric chloride, to precipitate arsenic within the filtration media.
  • The Filtraflo™ As process is used to adsorb arsenic from raw water. It features a single bed of ferric hydroxide.


Filtraflo™ and Filtraflo™ As are well adapted to medium to large plants. When arsenic occurs in an existing water treatment plant, they can easily be installed downstream of the sand/dual media filters.

Based on this advanced technology, Opalium - a Veolia Water Technologies' company - has also developed Opafer™, for small to medium sized treatment facilities.

 

Applications

FILTRAFLO™AS : ADSORPTION ON GRANULAR FERRIC HYDROXIDE

  • innovative process
  • well adapted to As III and As V removal
  • no chemical pre-oxidation required
  • no sludge production
  • no risk of residual iron


FILTRAFLO™ : COAGULATION AND FILTRATION

  • two stage process:

               > coagulation/flocculation

               > sand filtration

  • adapted to high As V concentrations
  • adapted to raw water with high turbidity

 

References

SOME FILTRAFLO™ AS REFERENCES

Location Capacity (m3/d) Solution Year
Baudricourt - France  2000 Filtraflo™   1997
Villafranca del Castillo - Spain  2900 Filtraflo™ As  2005
Szeged - Hungary  24 Filtraflo™ As  2004
Woerth - France  3000 Filtraflo™ As  2002

 

SOME FILTRAFLO™ TGV REFERENCES

Location Capacity (m3/j) Solution Year
Az Zour, Kuwait 417,6 Filtraflo™ TGV  2013
Chengdu Shuangliu, China 100  Filtraflo™ TGV  2012
Oset, Norway 390  Filtraflo™ TGV  2010
 Abu Dhabi Wathba, UAE 415,2  Filtraflo™ TGV  2010
Petkim, Turkey 72  Filtraflo™ TGV  2005

 

OPERATING PRINCIPLE
Depending on the plant capacity, filtration can be achieved within an open or pressure filter.
Optimum performance of the filtration process is ensured through regular backwashing with filtered water and air scour, evenly distributed through our proprietary nozzle underdrain.

Each filter is backwashed independently, hence the guarantee of continuous supply.

 

FILTRAFLO™ PACK Municipal Range

FILTRAFLO™ PACK is a complete range of modular and flexible skid-mounted media filters for: - Drinking water treatment - Treated water reuse
Filtration

FILTRAFLO™ PACK Industrial Range

Our FILTRAFLO™ PACK for industrial applications is dedicated to: Process water production Treated water reuse.
Filtration

FILTRAFLO™ PACK

FILTRAFLO™ PACK constitutes a complete range of modular and flexible skid-mounted media pressure filters, for municipal and industrial applications
Filtration

FILTRAFLO™ PACK (Mono/Duo/Trio)

The FILTRAFLO™ PACK (Mono/Duo/Trio) pressure sand filters reduce Turbidity from water

FILTRAFLO™ Carb

Filtraflo Carb is a chemical free polishing solution involving micrograin activated carbon, that allows by adsorption the removal of the Natural Organic Matter, the pesticides, and a large spectre of micro-pollutants in treated water while also filtering it.

Filtraflo™ TGV

Very high velocity filters for drinking water and process water production.