Economic Plating Waste Treatment by Reverse Osmosis
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Table I
Typical Reverse Osmosis Test Data (Laboratory Scale)
for Watts Nickel Plating Rinse Water at 1% of Bath Concentration
Using Eastman RO-97 Membranes at 600 psi
Flux rate for permeating water: 14.6 gfd.
Species
Rejection Efficiency %
Ni
++
99.6
S 0 4 "
99.8
Cl"
99.0
H3BO3
28.0
Coumarin
25.0
Sodium allyl sulphonate/
N-allyl quinaldinium bromide
96.8
combination additive