Civil Engineering Reference
In-Depth Information
Technology (Sweden) in the mid-1960s and introduced in North America by the Park-
son Corporation in 1971, the influent enters approximately one-third from the top of
the clarification basin and is directed downward and then upward through a series
of parallel plates, as illustrated in Figure 11-15. The sludge is collected at the bottom
of the basin, with the sludge flow initially moving in the same direction as the water
flow, and then countercurrent as in the other types of systems. The clarified water is
conveyed between the plates to the top of the clarifier (see Fig. 11-15). The plates
are typically 3 to 12 ft (0.9 to 3.7 m) wide by 7 to 21 ft (2.1 to 6.4 m) long, spaced
Fig. 11-15.
Parallel plates type settler (From Culp, Gordon, and Williams, Robert,
Handbook of
Public Water Systems.
Copyright
1986 by John Wiley & Sons, Inc. Reprinted by permission
of John Wiley & Sons, Inc.)
