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Process modification of a wire‐welding plant for efficient sulphate removal
Author(s) -
Duranoğlu Dilek,
Kadιrgan Neset,
Üstün Beyza
Publication year - 2012
Publication title -
water and environment journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 37
eISSN - 1747-6593
pISSN - 1747-6585
DOI - 10.1111/j.1747-6593.2011.00263.x
Subject(s) - wastewater , welding , lime , precipitation , sulfate , plating (geology) , sewage treatment , industrial wastewater treatment , metallurgy , pulp and paper industry , environmental science , materials science , chemistry , environmental engineering , geology , engineering , physics , geophysics , meteorology
ulphate removal by chemical precipitation from the wastewater of a wire‐welding facility was investigated. Sulphate was precipitated by using limestone and a small amount of lime. Firstly, the relationship between the ionic strength of wastewater and sulphate removal efficiency was established. A kinetic study of sulphate precipitation was also conducted. Finally, modification of plating process was proposed to achieve the highest sulphate removal. According to the suggested modification, the sulphate concentration of final discharge could be down to 425 mg/L. Hence, if wire‐welding facilities modify their systems so that the wastewater is treated at the highest level of sulphate contents, the removal efficiency will be the highest, i.e. lesser amounts of sulphate will be discharged into sewage systems.