Page 181 - Membranes for Industrial Wastewater Recovery and Re-Use

Table 3.33 (continued)
Reference Dye tspe Rem o v a I Scale, flow (m3/day) Permeate Dyestuff % colour Permeate %salt %water
process used or membrane area (m’) flux reused rejection reused? reject~on recovery
(l/m2h)
____ __ ~ ~
Calabro et al. (1990) Bayer Lev* red, blue RO 5 m2 membrane area 22-27 No 100 8 5-9 5
and red violet
Watters et al. (1991) totaldyehouse waste UF 0.1 1 m2 membrane 27.5-370 34-93
stream area
Majewska-Nowak Analogues: direct green, UF: polysulphone 33.2 x lo4 m2, 81.2 x 3.75-5.0. 97.80 12.9-15.4.
(1989) methyl orange, eriochrome polysulphone/poly- 10-4m2membrane 14.6-39.6 8.2-15.3
black. Actualeffluent: methyl methacrylate area
direct navy blue, direct membranes
violet, direct brown, helion
black
a Fordyes with molecular weight > 800.
For dyes with molecular weight > 780.
For dyes with molecular weight > 739.