Dye Effluent Recovery
In the process of adding dye to textile materials, large quantities of water, salts, and chemicals are used for the pretreatment and binding of the dye. Much of that passes through and forms the effluent wastewater which must be treated before discharge into the environment or reuse for manufacturing processes. Among those dyes, the reactive dyes for cotton has posed the most ecological concern because the effluent produced has high level of BOD/COD and is typically heavily colored.
Benefits of membrane processes:
- Recovery of unused synthetic dye in the effluent
- Reuse of water after membrane treatment
- Minimized transportation costs through desalting
Synder Filtration’s wide range of nanofiltration membranes can be used to treat the effluent wastewater and to aid in the concentration and recovery of unused synthetic dyes.Synder’sNFXnanofiltration membranes can be also be used in conjunction with ultrafiltration membranes to remove excess salts and sulfites in the effluent before reuse.