Treatment of wastewater. Removal of heavy metals by nanofiltration. Case study: Use of tfc membranes to separate cr (VI) in industrial pilot plant

摘要

Heavy metals are not degradable and therefore continue to remain in water. This feature makes them to be a major source of pollution [1], [2]. Membrane technology is a good solution to solve this problem, as it can be used to separate heavy metals from wastewater, allowing its subsequent reuse [3]. Nanofiltration (NF) helps to approach the ideal zero discharge processing of effluents in industrial applications. Membrane processes and thus NF can also compete with other traditional methods for the treatment of wastewater, both urban and industrial. NF can be used either to recycle water (or solutes) or to improve its disposal quality [4].