wastewater disposal and water supply preliminary report woodlane

4. ISSUES AND RECOMENDATIONS
4.1 SEWAGE SYSTEM
The reticulation network is generally in a good condition and has sufficient
capacity to cater for expected levels of residential expansion.
The operation of the WWTP needs to be reviewed. The plant should be fully
desludged once every 3 months, unless a sludge thickening tank is provided.
The sludge age in this plant is outside the optimal working range.
Removal of the water treatment plant will also benefit the WWTP as the
coagulated sludge will not be released to the sewer. The water treatment plant
is having pH adjustment and also coagulant. Both these chemicals will be
impacting on its operation.
A waste activated sludge path needs to be introduced to the plant.
The irrigation system needs to be reviewed to determine its operational
effectiveness. The broken lines need to be repaired and the irrigation system
should be flushed.
4.2 WATER SUPPLY
The current system appears to be operating effectively. However Council
should be monitoring water quality on a more regular basis if they continue to
operate the plant.
W&G recommends that Council pursue an SA Water supply from the existing
100mm main. Initially this could be connected directly to the existing water
treatment plant. Council can then monitor the system and determine if a larger
buffer storage is warranted.
Switching to the treated supply would improve water quality and consistency of
water quality. It also minimises Council’s risk as a water supplier.
Water licence for the shacks for domestic usage purposes should be obtained
from the DWLBC. This is imperative as the water supply comes from the
Woodlane Wastewater Disposal and Water Supply Preliminary Report
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