Page 109 - Water and wastewater engineering
P. 109

3-6   WATER AND WASTEWATER ENGINEERING

                                                                                      Overhead crane

                                                                          Traveling             Pump motor
                                                                           screen
                                                                                                        Bridge
                Bar screen
                  winch                                                   Winch
                                                                                                    Discharge via
                                                                                                    bridge to water
                                                                                                    treatment plant
                                                                      Railing

          Low water
           surface
           elevation                                                       Bar screen
                                                                                               Pump
                                                                         Sluice gate          column
              Intake ports
               at three                                 Bar screens
              elevations
                                       Exterior view: outside                        Section
                                         of intake port
          FIGURE 3-3
             Classic tower design with multiple ports.





                                                              15.2 m to lake  surface






                                          Horizontal baffle    Intake screens
                                    Intake crib
                    Protective blocks

                                                                               3.3 m




           2.74 m         Intake conduit
                2.3 km to low-lift pump station
                                                                        Granular fill


            FIGURE 3-4
           Lake intake crib. Crib is steel octagonal.
   104   105   106   107   108   109   110   111   112   113   114