Q1 (25 marks) Define and differentiate between the following: ii. iii. Temporary and permanent hardness (5 marks) Organi

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Q1 25 Marks Define And Differentiate Between The Following Ii Iii Temporary And Permanent Hardness 5 Marks Organi 1 (203.3 KiB) Viewed 11 times

Q1 (25 marks) Define and differentiate between the following: ii. iii. Temporary and permanent hardness (5 marks) Organic, ortho and poly phosphorus in wastewater (5 marks) Self-cleansing and scouring velocity in sewers (5 marks) Type 1 and Type 2 settling in water/wastewater treatment (5 marks) Chloramines and Disinfection by-products (5 marks) iv. V. Q2 (25 marks) a. Explain briefly with the help of chemical equations the relationship between pH and disinfection efficiency. What effect on chlorine dose do you predict if the pH of the post-filtration water in a water treatment plant was reduced from 8.5 to 7.3, and why? (15 marks) b. Explain the significance and basis of selection of indicator organisms in biological testing of water. (10 marks)