For inspection purposes only. Consent of copyright owner required ...

Type of Plant
Carlow Precast Tanks
Domestic Waste Water Treatment Plant
The plant works as a sequential batch reactor (SBR). Pollutants from the wastewater are absorbed
by the activated sludge and converted into biomass. The micro-organisms are activated
by the oxygen intake during the aeration period.
How does it work
The process employs a four-stage cycle: fill, react, settle and empty. Approximately eight
hours after commencement, the cycle comes to an end and another cycle recommences.
The SBR process is time-based rather than flow-based so there is much more control of the
treatment process.
Intended Use
On-site treatment of domestic wastewater. Other effluents may damage the plant or affect
its function (please refer to Operation and Maintenance Manual for full list of Solid or fluid
substances that do not belong in drain or toilet).
The following effluents cannot be introduced to the plant:
• industrial wastewater that is not comparable with domestic wastewater,
• percolating water,
• cooling water,
• swimming pool runoff,
• rainwater
Usage of eco friendly cleaning agents will allow activated
sludge (micro-organisms) to grow up faster and
maintain required level. This will cause good plant performance.
Design
PUMP-OFF
SEDIMENTA-
CPT Zons AQUAstar system is designed to work in
range:
• from 2 to 6 (1200 gallon tank)
• from 6 to 10 (1500 gallon tank)
For inspection purposes only.
Consent of copyright owner required for any other use.
FILL
AGITATION/AERATION
2
EPA Export 24-08-2012:23:55:54