The rudimentary system was constructed from improvised materials, utilizing a flow through design across 3
CPC collectors in series. Rather than 33o orientation, which is optimal for Adelaide, each module was orientated at
10o, which is optimal for PNG. This ensures flow rate similarities to that expected in PNG, but provides an
underestimate of UVA irradiance that can be expected in-country during actual operations. Contaminated water
flowed from a feed reservoir through the three modules into a collection reservoir. The water was gravity feed, with
the flow rate controlled by an in-line tap, with a flow rate of approximately 0.14 L/min.
During the experiment, water samples from the feed and collection reservoir, outlet water temperatures, flow
rates and global radiation were taken every 30 minutes. UVA radiation was logged continuously. The water
temperature was measured using an IR thermometer and not the LM335 sensors. During the testing, global radiation
ranged from 841 W/m2 to 1062 W/m2 and UVA radiation ranged from 24 W/m2 to 35 W/m2. Maximum outlet water
temperature was 37.1oC, compared with the reservoir temperature of 29oC. This indicates that thermally enhanced
SoDis was not occurring.
The initial concentration of E. coli was 8