Scale

A laboratory study was carried out to explore the effect of solution hydrodynamics on the deposition of calcium carbonate scale on Stainless Steel 316 and calcium sulfate scale on aluminum substrates using a rotating cylinder electrode apparatus. The results of the study indicate a strong influence

Studies have been performed on removal of fluoride from Moroccan groundwater by electrodialysis in continuous operation using a pilot plant. The performances of two anion exchange membranes were compared. An optimisation of electrodialysis operation was carried out for various experimental condition

We studied the effect of water hardness, temperature and the nature of walls on CaCO3 heterogeneous nucleation, which is the main condition of scale. The probability of CaCO3 heterogeneous precipitation increased for weak water hardness and weak temperatures. The wall nature did not influence the pr

Studies have been conduced on a groundwater containing 850–1100 mg/l of total dissolved solids (TDS) and 80 mg/l of nitrate to remove nitrate by coupling electrodialysis and bioreactor. The performances of the pilot plant during the period of the tests (more than one year) were proved. The optimisat

The multi-effect distillation (MED) process is the oldest process in desalination. References and patents have existed since 1840, more than 150 years ago. Vertical tubes, horizontal tubes and different types of submerged tubes have been commercialized and were used until 1960 when multi- stage flas

New products based on enhanced maleate chemistry have been developed to control the broad range of deposits found in thermal desalination plants. To investigate the performance characteristics of enhanced maleate products, laboratory tests were developed to measure the control of fouling species. Th