All waste water undergoes pre-treatment in an anaerobic,
predigestion environment. This is usually a Septic Tank but can be
surface tanks as part of a ‘full kit’ plant. At this stage
microbial digestion takes place - complex organic compounds convert
to simple soluble organic compounds.
The resulting solution is pumped to the base of the Lilliput Bio-Reactor.
This Aerobic Upflow Submerged Bio-Reactor contains the AWW MARK 2
fixed-growth media which serves as the main anchor for the bacterial
population, optimising critical surface area and voidage. The media
is underlain by a porous membrane air diffuser for the purpose of
introducing a fine bubble oxygen supply. Carbonaceous degradation
and nitrification are achieved within the biofilm adhering to the
media. The fixed film biomass allows for chemical shock tolerance
and regenerative capabilities unattainable in activated sludge systems.
Once the solution has passed through the Bio-Reactor it is sent for
final cleaning. Fine particles of humus can be removed in a Clarifier
before the final disinfection in the Chlorine Contactor.
Such Clarifier is not necessary at the Single House level of application.
Treated/disinfected effluent may be used for irrigation or water features,
or discharged to water courses, dams, lakes or stormwater systems.
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