metal precipitation electroplating wastewater treatments by mexico

metal precipitation electroplating wastewater treatments by mexico
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  • How is heavy metal treated in electroplating?
  • In the modern electroplating industry, the chemical precipitation of heavy metals using lime, sulfide, and caustic soda is the most extensively used treatment process, which occupied pH arrangement to necessary conditions to minimize metal ions solubility in the effluent (Ku and Jung 2001 ).
  • Can electro-coagulation remove heavy metals from electroplating wastewater?
  • The application of the electro-coagulation process proved to be an efficient treatment technology for the removal of metals from electroplating wastewater. Combination of lime and ferric chloride was more efficient for the precipitation of heavy metals from industrial electroplating wastewater than other chemical coagulants.
  • How to treat electroplating wastewater?
  • There are several processes reported to treat electroplating wastewater such as chemical precipitation, adsorption, coagulation and flocculation, ion exchange, electrocoagulation, membrane filtration, advanced oxidation process and biorecovery. These methods provide the possibility to capture different toxic metals and remove organic pollutants.
  • Where is industrial electroplating wastewater collected?
  • Industrial electroplating wastewater effluent was collected from Candilars metal electroplating plant, Cairo. This plant consumes about 100 m 3 of water daily in the electroplating process, 80% of wastewater is reused after treatment for rinsing the electroplated pieces.