Membrane Filtration for Water Reuse
topic
Textile effluent membrane treatment using microfiltration at 0.1 to 0.5 micrometre pore size, ultrafiltration at 1 to 100 kilodalton molecular weight cutoff, and reverse osmosis at salt rejection above 99 percent processes biologically treated textile effluents to produce permeate water quality suitable for reuse in dyeing and rinsing operations, achieving 60 to 80 percent water recovery from treated effluent streams.
Role
Enables significant fresh water consumption reduction in textile wet processing through treated effluent recycle that recovers the majority of dyeing and washing water for reuse, addressing the water scarcity challenge facing textile processing in water-stressed regions while reducing fresh water purchase cost and effluent discharge fees that together provide economic justification for the higher capital investment of membrane treatment systems over direct discharge.