Treatment of Galvanized Waste Water by Membrane Distillation with Natural Adsorbent: A Review

Wastewater containing high concentrations of metal ions can be harmful to aquatic life and degrade the
water quality. The metal ions are removed by Adsorption and Membrane distillation process. However,
these methods are less effective and relatively expensive. Therefore, there is a need for alternative
technologies to improve the efficiency of metal ions removal from wastewater. This study deals with the
process of removal of metal ions from galvanized waste water through a combination of adsorption in the
membrane contactor and biological treatment. The parameters pH, COD, BOD, Adsorbent dosage and
contact time is tested in the galvanized waste water. Oryza sativa, Arachis hypogea, Prunus dulcis, Citrullus
lanatus, Citrus limon are used as a natural absorbent to treat the water before Membrane distillation. In
this experiment, the wastewater from the galvanized industry was firstly collected and treated to remove the
heavy metal ions present in the waste water. The treated water is finally utilized for irrigation purpose