AMIAD - AUSTRALIA & ASIA PACIFIC NEWS - VOLUME 9 - APRIL 2017 April 2017 Vol.9 APAC | Page 6

Case Study | Melton  (continued)
The system consisted of four (4) skids, of
ten (10) x 4” Galaxy Spin-Klin filters each,
with 20-micron disc elements and an
external source backwash system.
We also offered a capability to install an
AMF microfiber filter to guarantee
filtration down to 2 micron & guarantee
Class B water through the system, but this
was decided to be left for a later date.
Results
Primary Parameters Max. Value
Feed Class/Standard Class C (Secondary treatment & pathogen reduction)
<1000 E coli org/100mL
<20mg/L BOD
<30mg/L suspended solids
pH 6-9
Operating pressure Minimum 1 bar during filtration, 6 bar during external source flushing
Max pressure 10
TSS (Feed Water) Avg TSS: 15ppm
Max TSS design: 20ppm
Flow Rate 14 ML/day (583 m³/h)
% Removal of particles above 30 µm 97% (1.5-Log)
% Removal of particles above 40 µm 99% (2-Log)
The 20-micron filtration offered a number
of secondary benefits that were not
factored into the initial evaluation, but
significantly improved the performance of
the system.
Secondary Parameters
Additional Benefits
The same Chlorine dose rate now
Due to the reduction in TSS, the Chlorine is not consumed as quickly
offers E.coli reduction to a level
and the residual remains in the system for longer, thus offering greater
similar to Class B (<100 org/100 ml) pathogen reduction.
The Class A WTP now received
20-micron filtered water
6 | March/April  2017
Improve Class A treatment plant production capacity
Reduce Class A plant CIP (chemical consumption)
Decrease in pre-filtration (200–micron) cleaning cycles at the Class A plant