SCUM
^
OVERF10W
0.2FREE BOARD
D
MANOMETER
FLOW MEASUREMENT
SUPERNATANT WATER
1 - 1.5m
0.8- 1.3m
PROV1OE
\
RAW WATER
\.
: ACCESS
¡ VENTILATION ÍSCREENED)
SCHMUTZDECKE
V NOTCH WEIR
REMOVABLE SIDE BOWK
. : '-.MI'N.BED LEVEL.".". •
SUPERNATANT DRAIN
t - 1.4m
RLTER SANff
INNER W U S ROUGHENED
TO PREVENT SHORT *
CIRCUITING
0. 35m
OUTLET
VALVE X
RLTER
IL-
FILTERED WATER
SUPPLY FOR
BACKFILLING
UNDER ORAINS
TO CLEAR WAIF
RESERVOIR
-r
FILTER CONTROL
VALVE
FILTER DRAtN
WASTE DRAIN
SLOW SAND FILTER - FEATURES
ptr;t tor