SWRO Plant Hamma / Algeria

Pre-filtration with EVERZIT® N - without silicic acid elution  

This  desalination plant, built in 2007 in Hamma Algeria, is one of the largest of its kind in Africa. It supplies fresh drinking water for one third of the 6 million inhabitants of the country’s capital city Algiers.

Advantages of EVERZIT® N

Used as the upper layer in these multilayer filter beds, EVERZIT® N increases treatment capacity and reduces operating costs by providing specific benefits:

  • Increased solids filtration capacity
  • Higher flow speeds through filter bed
  • Reduced pressure drop
  • Longer operation cycle of filter media
  • Reduced backwash-related downtime and costs


Technical Data

Capacity of pre-treatment filtration:approx.  20.000 m³/h
Capacity of RO plant:approx. 200.000 m³/d
Filter units:32 open multi-layer filters
Total filter surface:approx. 2.000 m²
Filter velocity:approx. 10 m/h
Year of construction:2007

Filter layout

Filter materialHeightGrain size
EVERZIT® N:1500 mm 0.8 - 1.6 mm
Quarzsand:400 mm0.4 - 0.8 mm
EVERZIT® GS: 75 mm 1.4 - 2.5 mm
Quartzgravel:400 mm3.15 - 50.0 mm