The control of by-products during ozonation
Tutor / director / avaluadorParsons, Simon
Tipus de documentProjecte/Treball Final de Carrera
Condicions d'accésAccés restringit per acord de confidencialitat
Reverse osmosis desalination plants are to deal with scaling problems which can lead to the membrane destruction. This project studied the delay in CaCO3 precipitation during ozonation experiments conducted on synthetic seawater. A reliable precipitation test for seawater was developed since the reproducibility of the experiments was poor. Empirical models for bromate formation were used to give a bench mark for the ozone experiments. The main parameters to control bromate were the applied dose, contact time and the water pH. Synthetic seawater samples were ozonated in a batch reactor under satisfactory conditions to achieve a significant retardation in CaCO3 precipitation. Sonication was tested to cause a pH depression to a lower levels were the bromate formation is suppressed, but the acidification did not occur.
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