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- Title
Membrane feedpump optimization for efficiency.
- Authors
Lawler, John; Grondhuis, Fred
- Abstract
In recent years, the size of reverse osmosis plants has increased dramatically. The layout of many plants has also changed, incorporating a center design. The advantage of this design is that the membrane feedpumps discharge into a common header, and the output of the pump is no longer linked to the flow for a specific rack of membranes. This has allowed the use of much larger pumps in a two- or three-stage configuration. The use of larger pumps improves the unit efficiency while lowering the installation costs by reducing the number of pumps. Pump manufacturers continue to strive to improve the efficiency of these pumps by modifying and upgrading the basic design. The horizontal split case design has been manufactured for more than 80 years. In the last 5 years, the efficiencies of this design have been improved substantially, thereby lowering the operating costs of the desalination plant. A paper was presented earlier outlining the role of the suction impeller and suction bay design. This paper will detail the hydraulic optimization that has been applied to maximize the efficiency.
- Subjects
SALINE water conversion plants; REVERSE osmosis in saline water conversion; REVERSE osmosis (Water purification); ARTIFICIAL membranes; SEWAGE disposal plants; PUMPING machinery; WATER treatment plants
- Publication
Desalination & Water Treatment, 2013, Vol 51, Issue 4-6, p726
- ISSN
1944-3994
- Publication type
Article
- DOI
10.1080/19443994.2012.714664