MT MORGAN OPEN CUT PIT WATER QUALITY MODELLING stage 2 ● 7
tables
Table 3-1 Summary water quality statistics of the physico-chemical parameters and nutrients of OCP water .................................................. 13 Table 3-2 Summary water quality statistics of dissolved metals and metalloids data of OCP water .................................................................... 14 Table 3-3 Summary water quality statistics of total metals and metalloids data of OCP water .................................................................... 15
Table 3-4 Total concentrations of elements in the new tailings .......... 16
Table 3-5 Geochemical modelling scenarios ........................................... 17
Table 3-6 Input parameters of the mixing model ................................... 17
Table 4-1 Results of mixing of OCP water with final tailings at pH 9.6 with four mixing scenarios. ........................................................................ 20 Table 4-2 Results of mixing of OCP water with final tailings at pH 7 with four mixing scenarios. ................................................................................ 21 Table 4-3 Results of mixing of OCP water with final tailings at pH 8 with four mixing scenarios. ................................................................................ 22 Table 4-4 Results of mixing of OCP water with final tailings at pH 10 with four mixing scenarios. ........................................................................ 23 Table 4-5 Results of mixing of OCP water with final tailings at pH 11 with four mixing scenarios. ........................................................................ 24 Table 4-6 Results of mixing of OCP water with final tailings at pH 12 with four mixing scenarios. ........................................................................ 25 Table 4-7 Comparison between mixing model results and laboratory test results of OCP water after being contacted with the new tailings.27
figures
Figure 1-1 Location of the Mount Morgan Open Cut Pit (OCP)............... 9
Figure 1-2 Mount Morgan recycling process flowchart.......................... 10
Figure 4-1 Modelling predicted OCP pHs after added new tailings with a ranges of pH at the volume ratio 0.61: 1 (new tailings : OCP water). 26 Figure 4-2 Modelling predicted OCP pHs after added new tailings with a range of volume ratio. ............................................................................. 26
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