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 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
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 pump delivers the feed to the reactor vessel through a transparent lid.
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.
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
The water level is maintained by an adjustable constant head overflow device.
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
Feed pump: 24V DC, peristaltic, 0-30rpm corresponding to 0-40 litres/day