Wastewater from electronic printed circuit board (PCB) factories was subjected
to lab-scale ion exchangers of two types: strong acid cation followed by weak base
anion exchanger. The experimental investigation was directed to study the ion
exchanger performance in terms of three different parameters namely (TDS, feed
rate and bed depth). Box-Wilson composite rotatable design was adopted in
designing the experiments. Breakthrough times of (PCB) wastewater were studied
through TDS ranged between 317 to 1193 ppm, feed rate ranged between 0.712 to
4.980 l/h, and bed depth of cation exchanger ranged between 9.4 to 60.6 cm and
anion exchanger ranged between 14.3 to 91.0 cm.
Simulation the effect of the studied variables through their pre-designed ranges
in terms of breakthrough time by 2nd order polynomial equation was obtained. In
general, the performance and characteristics of adopting two bed deionizers (cation
and anion beds) was proved efficient for the removal of the ionic contaminants and
not less than 95 % of wastewater is recycled. In addition, the research considers the
treatment of highly metals content regenerant solution out coming from
reclamation system to minimize its metal content. The reclamation of wastewater
was studied in terms of breakthrough time (i.e., the leakage of the cations).