Latest Water Technologies of Abengoa Water - GineersNow GineersNow Engineering Magazine Issue No. 022, Abe | Page 14

Activities of Abengoa in the water sector
include the development and construction
of some of the most important desalination
plants all over the world: in Spain, Africa, Latin
America and Asia. These produce drinking
and industrial water through conventional and
advanced membrane processes from seawater
or brackish water.
as Teshie, Nungua and Tema. It has a capacity
of 60,000 m 3 /day and employs four reverse
osmosis racks with pre-treatment consisting
of hypochlorite disinfection, coagulation with
CI 3 Fe, filters in the self-cleaning system, and
UF I MF. Post treatment consists of calcite and
SO 4 H 2 with subsequent hypochlorite testing
and brine output.
As a good example of this, we can point to the
Tenes plant in Algeria. This started operating
commercially back in September, 2015, and
has a capacity to produce 200,000 m 3 /day,
which is enough to provide drinking water to
over a million residents. The plant uses reverse
osmosis via 12 reverse osmosis racks with
a capacity of 16,667 m 3 /day each, together
with a high-efficiency energy recovery system
which is based on isobaric chambers (ERI).
Post-treatment involves remineralization
through lime and carbon dioxide (locally
produced) injection and disinfection through
sodium hypochlorite. Abengoa has also played a main role in the
desalination sector in India, where it has
developed a desalination plant in Chennai
which has been in operation since 2010, and
produces water to the town with the same
name. It has a capacity of 100,000
m 3 /day and employs reverse osmosis through
membranes with flocculation pretreatment
lamellar decanters, filtration and chemical
treatment. The post treatment process
includes remineralization and an energy
recovery system. This plant includes variable
frequency devices installed in high pressure
pumps in order to optimize the production and
consumption of energy.
Moreover, Abengoa has developed the Nungua
desalination plant in Ghana which is producing
drinking water to supply various locations
around the metropolitan area of Accra, such Recently, Abengoa was selected by Acwa
Power to develop a reverse osmosis
desalination plant in the Shoaiba III complex in
Saudi Arabia. It will be the largest desalination