The Model H-DWTS-CSI Digital Wastewater Treatment Simulator from Bestech Australia is a PC-compatible computer controlled platform.
The operator monitors and controls every aspect of the treatment process including:
• Inlet pump control
• Grit removal
• Primary sludge removal
• Biological filtering
• Chlorine mixer
• Sludge management, etc.
The module’s front panel displays both a complete schematic and pictorial of the system. All functions operate as on the actual equipment and present the student with realistic problem situations.
The settled wastewater enters aeration tanks where air is blown into the liquid to provide oxygen for mixing and to promote the growth of micro-organisms.
The “active biomass” uses the oxygen and consumes organic pollutants and nutrients in the wastewater to grow and reproduce.
From the aeration tanks, the mixture of wastewater and micro-organisms passes into a secondary sedimentation tank (also known as a clarifier) where the biomass settles under gravity to the bottom of the tank and is concentrated as sludge.
Some of this sludge is recycled to the inlet of the aeration tank to maintain the biomass, hence the name for the process – activated sludge. The remainder is pumped to anaerobic digesters for further treatment.
Hampden’s Model H-6515 is a bench-top trainer designed to demonstrate the fundamentals of the anaerobic treatment processes.