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Airfield Camp Site - Sullage
Sullage is wastewater that comes from your laundry and ablution areas. Sometimes it includes the kitchen sink and showers but not toilets. Because it contains lower levels of contamination, it’s easier to treat and process for recycling, which is commonly used in irrigation.
Sewerage on the otherhand, comes from your toilet, as it contains human faecal wastes that needs to be treated separately and differently from greywater.
It’s very likely that the existing sullage (photographed) at the rear of the Airfield Camp was constructed in 1941 but this needs to be confirmed and hopefully more information found on it.
In today’s modern world, Rottnest Island has a treatment facility located on the island which treats the wastewater to use for irrigation on the golf course and a number of other areas around the island. Their Wastewater Treatment Plant “uses a membrane bioreactor which produces consistent water quality and has a low pollution risk”.
Sullage - Silt Chamber
A silt chamber, which is also known as a silt trap, is designed to capture and remove sediment and debris from wastewater and stormwater before the water enters the larger drainage system.
Sullage Debris & Bush
Skip Bin
Prior to 1955, a large tree was located in close proximity to where this rusted skip bin lies.
If it’s never been moved since WW2 or the years that followed, the skip bin was certainly well sheltered from the tree and hidden from 1955 aerial imagery.
With the extensive reinforcement of bolts and rivets, it appears likely to have belonged to the army and resembles a myriad types of equipment that was constructed like this, particularly their water tanks and big gun installments.
