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Total removal of heavy metal from mixed plating rinse wastewater

Sapari, Nasiman and Idris, Azni and Ab Hamid, Noor Hisham (1996) Total removal of heavy metal from mixed plating rinse wastewater. Desalination, 106 (1-3). pp. 419-422. ISSN 0011-9164

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Abstract

A mixed plating rinse wastewater containing zinc, hexavalent chromium, trivalent chromium, and cyanide with total dissolved solids of 424 mgil was treated by a model consisting of a sand filter and ion exchange columns. A strongly acidic cation resin in hydrogen form and a strongly basic anion resin in hydroxide form were used in the columns as cationic and anionic exchangers, respectively. The cationic and anionic exchangers were regenerated by using 2% H,SO, and 5% NaOH, respectively. A 100% removal of zinc, total chromium, hexavalent chromium and trivalent chromium was achieved in the studies. Very high removal of total dissolved solids, cyanide and hardness level was achieved at 98.9%, 99.9% and 96.5%, respectively. The conductivity of wastewater was reduced from an average of 358 psicm to 5 psicm. The case study has shown that treatment systems using cationic and anionic resin were able to treat a mixed plating bath effluent to comply with the standard discharge under the Malaysian Environmental Quality (Sewage and Industrial Effluents} Regulation, 1979.

Item Type:Article
Uncontrolled Keywords:Removal; Heavy metal; Plating; Rinse wastewater; Ion exchange
Subjects:T Technology > TD Environmental technology. Sanitary engineering
Departments / MOR / COE:Departments > Civil Engineering
ID Code:5300
Deposited By: Assoc Prof Dr Nasiman Sapari
Deposited On:07 Apr 2011 09:06
Last Modified:19 Jan 2017 08:27

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