Acid mine drainage

Question 1

2 effects

Answer 1

-direct water ph reduction
-mobilising metal ions

Question 2

1 control

Answer 2

-crushed limestone neutralises acids so metal ions cannot become mobile

Question 3

2 ways of monitoring water pollution

Answer 3

-COD measures amount of o2 needed to chemically oxidise all organic and inorganic substances in a water sample
-Coliform count , measuring number of coliform bacteria , E coli specifically , if in water always contaminated