This powerpoint presentation begins by providing a brief overview of desalination processes. A 3-stage concentrate treatment research project is presented, along with the experimental design that includes antiscalant oxidation, and zone decomposition in water - with and without H<sub>2</sub>O<sub>2</sub>. Research objectives were to: determine the effect of water composition on
phosphonate oxidation;
determine the effect of pH on phosphonate antiscalant
oxidation; and,
determine the primary oxidation pathway for
phosphonate oxidation. Conclusions indicate that: application of RO inland requires significant reduction in
concentrate volumes, and concentrate treatment is necessary to
achieve smaller volumes;
antiscalant oxidation increases when calcium coordination
occurs, and the effect of calcium on antiscalant oxidation is
different for each antiscalant;
antiscalant oxidation increases with ozone concentration;
antiscalant oxidation increases slightly with H2O2 addition, and
has an optimal pH of 6; and,
with calcium chelation, the primary oxidation pathway is through
direct reaction with ozone. Includes figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 1.4 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 30 |
| Published : | 11/01/2009 |
