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SAI INTERNATIONAL SCHOOL
                                                      CLASS-VII

                                            SUBJECT - CHEMISTRY
                                TOPIC- MANAGEMENT OF WASTE WATER
                                      SUB TOPIC- CONCEPT MAPPING





                                                                     MIND MAP


                                             Management of Wastewater


                                                       Wastewater


                            Po
                               l

                   W
                      ate
                          r
                                    o
                                      n

                                   i
                                l
                                 u
                                   t



               Properties of air                                                                                         Composition of air
                                                                               Water Treatment Plant



             Sources of Water Pollution
                   occupspace
                                                                         Sewage System
                                                                                                                     Secondary Treatment
                                                                                               Primary Treatment                Tertiary Treatment

               Domestic     Agricultural         Industrial
                                                                              Screening       Grit Removal           Sedimentation

                                                                                                       Uses of Treated Water and Sludge
               Alternative Method of Sewage Disposal




               Septic Tank            Vermicomposting                       Landfill                         Incineration















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