Small Sewarage Treatment Plant
Cater for Population Equivalent From 51 P.E to 149 P.E

Model
CAT System (Compact Anaerobic Technology)

Meets
Environment Quality Control Standard 'B'
SPAN (Suruhanjaya Perkhidmatan Air Negara)
IWK (Indah Water Konsortium Sdn Bhd)

Design Data	CAT-90	CAT-149
Population Equivalent ( PE )	90	149
BOD and SS Removal	EQA Standard 'A'	EQA Standard 'A'
Desludging	Once a year	Once a year
Number of Tank	2	4
Separation Chamber (m3)	10.84	21.68
Width ( m ) Ø , A	2.6	2.6
Height ( m ) Ø , B	2.76	2.76
Vent Pipe ( m ) Ø	0.075	0.075
Inlet / Outlet Pipe ( m ) Ø	150	150
Inlet Pipe Level ( m ) , C	0.27	0.27
Outlet Pipe Level ( m ) , D	0.35	0.35
Air Pump model (or equivalent)	EL-120W	EL-120W ( 2 units )
Area Required for tanks only	20.8m2 (3.2m x 6.5m)	42.25m2 (6.5m x 6.5m)