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Description

The reactor on the BE4 is a cylindrical glass vessel with a water jacketfor heating. The vessel is supplied with bafes and a variable speed
stirrer for use as a continuous stirred tank reactor (CSTR).
The bafes and stirrer are removable to enable the reactor to be flled with bio-balls and a support grill, to reconfgure the unit as a packed
bed reactor.
An alternative reactor lid complete with deflector and tri-phase separator is also supplied. This enables the reactor to also be
confgured as an upflow anaerobic sludge blanket reactor (UASB).
The feed into the reactor is provided by a variable-speed peristaltic pump. The lid of the reactor is ftted with a sampling station, which
includes ports for instrumentation probes (both temperature and pH) and permits liquid samples to be taken from the reactor at different
depths.
The reactor temperature is controlled by a recirculating water system in the same way as the BE3 and the same novel system for collecting
and measuring the emitted gas is used. Similarly the pH dosing system is identical in concept and the data can be recorded on a PC using the data logger.