Environmental Engineering Reference
In-Depth Information
Waste solution
Waste solution treatment
Pump
Sludge
sedimentation
Vacuum
rotatory filter
Sludge
Sludge
Clean
solution
FIGURE 30.3
Waste solution treatment.
an acid digestion to allow the use of atomic absorption spectrometry. The mineral phase
analysis is conducted using powder x-ray diffractometry; the patterns of NZ and ZZ are
presented in Figure 30.4, showing that during the technological process of NZ to obtain
ZZ, the crystal structure of the clinoptilolite remains unchanged. The mineral phase com-
position of NZ also remains stable: clinoptilolite-heulandite (80%), mordenita (5%), and
ZZ
NZ
05 10
15
20
25
30
35
40
45
50
55
60
65
70
FIGURE 30.4
Diffraction patterns of NZ and ZZ showing similarity because the mineral phase composition of NZ was not
modiied during ZZ production.
