Al-Anzi Bader S, Naik Mehraj-Ud-Din, Ahmad Mudasir
Department of Environmental Technology and Management, Kuwait University, P.O. Box 5969, Safat 13060, Kuwait.
Department of Chemical Engineering, College of Engineering, Jazan University, Jazan 45142, Saudi Arabia.
Polymers (Basel). 2022 Apr 20;14(9):1651. doi: 10.3390/polym14091651.
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.
众所周知，瓷砖工业废水含有因各种原材料而产生的高浓度总悬浮固体（TSS）和浊度。在本研究中，以氯化铁作为混凝剂，研究了混凝工艺对科威特瓷砖工业废水浊度和总悬浮固体去除效果的影响。通过烧杯试验进行实验，以确定混凝剂投加量、pH值和沉降时间的最佳运行条件。结果发现，混凝剂投加量和介质pH值对混凝工艺效率有很大影响。混凝剂投加量从10mg/L逐渐增加到50mg/L，浊度去除效率从95.6%提高到99.5%。还发现混凝工艺效率取决于pH值，较高的pH值可提高浊度去除效率。结果发现，pH值为10、沉降时间为1小时、混凝剂投加量为50mg/L是实现几乎完全去除浊度（99.5%）和总悬浮固体（99.8%）的最佳工艺条件。本研究得出结论，混凝作为瓷砖工业废水的一级废水处理工艺可能有效。
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