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QUESTION 2 Your organization has been hired to provide a water treatment process or device to remove toxic Chromium 6 [Cr(VI)] from water emanating from an underground source. Your organization has developed a treatment process that removes most of the Cr(VI) from the water to a residual concentration of 0.05mg/L which is an acceptable level in line with the World Health Organisation. The underground water flows at 40m3/h and has Cr(VI) concentration of 100mg/L. The effluent flow rate is 97% of the influent flow rate, and the remainder of the water is discharged as wastewater. Calculate the concentration of Cr(VI) in wastewater. (14)