Page 3 - REMOVING IMPURITIES FROM WATER AND PURIFYING IT (2)
P. 3

A. Methods  to remove




                              insoluble impurities








                  1. SEDIMENTATION AND



                  DECANTATION





                   • When water


                   containing insoluble
                   impurities is left


                   undisturbed for some                                                                        Sedimentation
                   time, the heavier


                   impurities settle
                   down at the bottom.


                   This process is
                   known as


                   sedimentation.
   1   2   3   4   5   6   7   8