Mediterranean Action Plan

MALTA - National study
Figure 5 Pressure Exchangers at Lapsi R.O. Plant
Source: Water Services Corporation
Figure 6 shows the total specific power (production and distribution) of the RO plants
between 1998–2007 and in particular the improvements registered in energy consumption at
Pembroke and Lapsi R.O. Plants.
Source: Water Services Corporation
Figure 6 Total specific power - RO plants
Case Study 1: Energy Efficiency in Desalination - Water Services Corporation (cont.)
Following these projects, the Water Services Corporation is planning further projects including
procurement of further pressure exchangers and new membranes with the intention of:
1. increasing the production capacity of RO plants;
2. improving the quality of the desalinated water;
3. decreasing the energy consumption in the RO plants;
4. decreasing the reliance on groundwater for potable water supply.
The planned projects consist in installation and commissioning:
1. two complete systems at Cirkewwa R.O. Plant and consisting in new pumps, pressure
exchangers and membrane replacements;
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