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Question 2. The main aim of the industrial wastewater treatment is to remove toxicants, eliminate pollutants, kill pathogens, so that the quality of the treated water is improved to reach the permissible level of water to be discharged into water bodies or to reuse for agricultural land for other purposes. Select any one process industry in the Oman and suggest a suitable treatment technique with detailed working principle and explanation of the process, advantages and disadvantages, applications and suitable recommendations. 25 marks