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significant performance increase of RO membra-
nes (increase in efficiency and durability, extension
of application, reduction of costs and energy con-
sumption). Today, RO plants have already come to
represent 60% of the desalination plants in terms
of capacity.

Termomeccanica Pompe’s
dedicated pump range

Termomeccanica Pompe entered the Desalina-
tion market as early as the 1970s and installed
throughout the 1980s till the mid 2000s pro-
cess and water intake pumps in most of the
key MSF and MED Desalination plants built in
the Middle-East & Gulf areas, thus acquiring
unparalleled experience in the field. Today, TMP
has an installed base of approximately 650 me-
dium- and large-sized pumps in the global De-
salination market, representing a total installed
power of 550 MW.
Over the last 10 years, however, the company Typical pump for brine recirculation service at MSF desalination plant
has focused its energy on enhancing its desa- (TMP CEXD pump model)
lination pump range to answer its customers
request for products specific to the fast-expan-
ding and ever-efficiency focused SWRO market. Termomeccanica Pompe has

Mathematical models are used for the opera- revisited its desalination pump
tional optimization of the Sea Water Reverse “range to cater to the growing
Osmosis process, with the aim to reduce plant market request for
OPEX and improve flexibility. Many variables are
taken into account to improve the performance high-efficiency Sea Water
of the SWRO system as a whole, such as the Reverse Osmosis solutions
total number of modules, the flow rate & opera-
ting pressure of each single module and, at the
end of the cycle, the required characteristics of
turbomachinery, including centrifugal pumps. total plant energy consumption. Reliability and
Centrifugal pumps play a particularly key role in efficiency are therefore the two key factors end-
SWRO desalination plants as they perform key users and their EPC contractors look for in a
services and account for a high percentage of pumping system supplier.

PF-RO axially split multistage pump (left) and MES-RO multistage ring section pump (right) 3D simulations

Impiantistica Italiana - Maggio-Giugno 2021 47