Cronulla's STP treats to a tertiary level........ unfortunately i am not really sure what this means.
After some research into the science of the poo process i find that Tertiary treated effluent should be clear.
The engineering and technical website Cadinfo explains the upgrade at CRONULLA from primary to Tertiary Level treatment. (there is also an indepth explanation of the process of upgrading the plant ...if your interested)
After some research into the science of the poo process i find that Tertiary treated effluent should be clear.
The engineering and technical website Cadinfo explains the upgrade at CRONULLA from primary to Tertiary Level treatment. (there is also an indepth explanation of the process of upgrading the plant ...if your interested)
The plant originally provided a primary level of treatment, meaning that it used sedimentation and the addition of ferric chloride and polymers to help remove the suspended solids and grease. The upgrade added three more steps to the sewage treatment process: 1) aeration and further sedimentation (secondary treatment); 2) filtration through sand filters (tertiary treatment); and 3) ultra-violet disinfection.
At the end of this process the discharge into the ocean at Potter Point shoud be clear, (Sydney Water advises)
mmmmmm.......so why oh why was it BROWN the other day when i visited the outfall at Potter Point?????
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