It is worth to note that the concentrations of SK3 for both contaminants
are higher than all the concentrations of all the sources. The
concentration ratios of SK3 to the maximum sources concentration
(Zk,SK3,/Ck,SR_max) for both
contaminants are larger than or equal to 1 (290/250 > 1 and
300/300 = 1). This means that all the individual sink-to-source
concentration ratios are all larger than 1. SK3 is not limited by any
contaminants, and all the sources can be allocated to SK3. If the
sources are enough, then SK3 can be covered without resorting to the
freshwater.
The full design methodology has been shown as presented in Scenario 2
and is nearly identical, According to the heuristic presented in Section
2.4/3, SK3 should be the last sink that is fulfilled as it should be
located Above the Pinch. In this case, the design methodology should
first start with contaminant cascade ‘B’ as the total flowrates of sinks
(SK2+SK4) in contaminant cascade ’B’ exceed the flowrate of the sink
(SK1) in cascade ’A’. After determining the allocation of sources to
SK2, SK4 and SK1, the remaining sources can be sent to SK3. Figures 13
show the CC plot for this scenario.