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6.24 CHAPTER SIX

FIGURE 6.13 Upflow gravel bed flocculator. (Source." Schulz et al., 1994.)

Collecting pipes /,-- Tube modules
Inlet holes, typical-.~

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",J'i o!
!:ii~ ~'

40--5050__60 mmmm i I ~ :i:i [' ~:

, , , , , ,, ~:~.i~m~,
,
[" A ,
support g raln~;L , { istributing pipes
Mild steel ratin!

Sludge d
FIGURE 6.14 Downflow gravel bed flocculator. (Source: Schulz et al., 1994.)