Page 407 - Water and wastewater engineering
P. 407

10-24   WATER AND WASTEWATER ENGINEERING




                              Hydraulic drive
                              cylinder








                               Drive
                               elbow

                                                                 Wear strip  Scraper plow



                             Exploded view                                     Drive shaft
                               Push


                                                   Push
                               Return             Return

                                                                                       Sludge hoppers

                              FIGURE 10-15
                               Indexing grid sludge scraper.
                                               Sludge

                                       Hydrocyclone
                                                                        Ballasted Flocs
                                                                        to Hydrocyclone

                                        Polymer    Microsand

                                                                               Clarified
                                                                                water

                               Coagulant


                            Raw
                            water
                                               Injection
                                      Coagulation     Maturation
                                                                   Tube settler
                                                                   with scraper
                              FIGURE 10-16
                               ACTIFLO ballasted sedimentation process for water treatment.   ( Courtesy of Kruger Inc. )
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