Q. Iron and manganese present as pollutants in water cannot be re-moved by - (Solved)
1. oxidation followed by settling and filtration
2. chlorination
3. ion exchange process
4. lime soda process or manganese zeolite process
- b. chlorination
1. oxidation followed by settling and filtration
2. chlorination
3. ion exchange process
4. lime soda process or manganese zeolite process