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Aerobic Digester
Product Code: SUK-SCHOOL-SSLAB-N9000012
Description & Specifications
Aerobic Digester
Technical Specification
The porous liner is removable for cleaning, and a spare liner is
supplied. Wastewater is drawn from a floor-standing feed tank (not
supplied) by a DC motor is driven peristaltic pump.
Rotational speed and thus flow rate, are accurately set by a ten-turn
potentiometer. The equipment consists of a ten-liter reactor vessel
mounted on a vacuum formed the plastic base, with a liquid feed pump,
air supply and instrumentation for monitoring and controlling the
process.
The pump delivers the feed to the reactor vessel through a transparent
lid. The cylindrical wall of the reactor is made from a porous plastic
material to retain the suspended solids while allowing treated water to
pass through to the outer, annular exit chamber.
This design allows the essential features of the aerobic treatment
process to be studied without the distractions of having to settle the
solids adequately enough for external recycle - a well-known laboratory
problem.
Features:-
The reactor consists of a cylindrical porous liner held in position with
sealing rings between the lid and the base to facilitate removal for
cleaning and replacement.
Suspended solids are thus held within the reactor volume, whilst treated
water permeates through the porous liner into an outer annular exit
chamber.
The water level is maintained by an adjustable constant head overflow device.
A 10-liter bench mounted aerobic reactor, complete with peristaltic feed pump, air compressor, and temperature control system.
Dissolved oxygen and pH probes and meters are included.
This digester system is designed to operate safely and reproducibly for periods of many days.
The equipment is mounted on a moulded plastic base, equipped with an
internally moulded drain channel, designed to cope with spillages and
wash-down water.
Technical Details:-
Air compressor: 240V /120V, 0-3.0 litres/minute
Reactor vessel: 10 liters maximum capacity
PH meter: Range: 0.00 to 14.00
Dissolved oxygen meter: Range: 0-100% saturation
Feed pump: 24V DC, peristaltic, 0-30rpm corresponding to 0-40 litres/day
Resolution: 2%
Reactor heater: Toughened glass, electrical immersion 200W
Temperature controller: 3-term PID
Temperature limit set at 35°C