The Imperative Need of Metal Salt for the Treatment of Industrial Wastewater via the Synergic Coagulation-Flocculation Method

Polymers

Mehraj-ud-din Naik¹  Bader S. Al-Anzi²  Mudasir Ahmad³ 

[1] Department of Chemical Engineering, College of Engineering, Jazan University, Jazan 45142, Saudi Arabia;Department of Environmental Technology and Management, Kuwait University, P.O. Box 5969, Safat 13060, Kuwait;School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an 710072, China;

关键词: Kuwait tile industry;    wastewater;    jar test;    coagulation;    ferric chloride;    turbidity;   

DOI  :  10.3390/polym14091651

来源: DOAJ

【 摘 要 】

Tile industry wastewater is known to contain a high concentration of TSS and turbidity resulting from various raw materials. In the present study, the effectiveness of the coagulation process on turbidity and TSS removal from Kuwait ceramic tile industry wastewater was investigated using ferric chloride as a coagulant. The experiments were conducted using jar tests to determine the optimum operating conditions of coagulant dosages, pH, and settling time. It was found that the coagulant dosage and medium pH greatly affect the efficiency of the coagulation process. A gradual increase in coagulant dosage from 10 to 50 mg/L increased the efficiency of turbidity removal from 95.6% to 99.5%. The efficiency of the coagulation process was also found to be dependent on pH values, where higher pH improved the efficiency of turbidity removal. It was found that a medium pH of 10, 1 h settling time, and 50 mg/L of coagulant dosage are the optimum process conditions to achieve almost complete removal of turbidity (99.5%) and TSS (99.8%). This study concluded that coagulation might be useful as a primary wastewater treatment process for tile industry wastewater.

【 授权许可】

Unknown