Not much light on cost effectiveness, but a wee bit.

www.tenix.com/PDFLibrary/231.pdf

Ta.

I think we can look forward to seawater de-salination costs reducing substantially over time.

What some are saying is that the canal which will be some sort of concrete bottom with some plastic cover will be 2 billion where as a pipe that distance would be more like 10 or 11 billion.

Either way it just needs to be done.

Bloody hell!

What a can of worms I've opened here..

I started this thread as a bit of a piss take of a badly worded leaflet, &
it's grown into a poltical debate about the future of Perth's water supply!

Aaaahh.... The art of conversation.

yep, and the estimated(by Water Corp.) operating cost of the pipeline would be $100million per year, as opposed to $24million pa. for desalination.For the canal though it be considerably less as the water will move by gravity.



Anyway, an independent panel is on the case and will publish a report in September 2005 outlining the costs of the various options.

Yes, that'll be better, because that above link is Tenix, so that can't be that reliable..... September though?! :scared:

Anyway, it's all politics at the moment, I'll wait and see what they're all saying after the elections.

Won't the salt (removed by the desalination process) simply add to the pollution down that way already?

Does anyone actually fancy drinking water from the Kwinana area anyway??? :scared:

Yes, all coming along at a snails pace.

That 4 experts on the subject will take 7+ months to report there findings is a joke.

This is a quote from the water corporation:

"We are also on track for seawater desalination, which must be operational by October 2006 in order to avoid the probability of total sprinkler bans."


Will take 2 years to build one.

Curious, reading the Water Corporation page on the desalination plant, it sounds as though it's already going ahead.

http://www.watercorporation.com.au/w...nation_faq.cfm

More general water info can be found here...
http://www.ourwaterfuture.com.au/pla...nu_options.asp

I have been down Rockingham/Kwinana way a few times recently...no evidence of building a desalination plant going on there.

Maybe it's invisible, or they're building it underground

Just magic .......Gallops dithering muppets

Not significantly when returned to sea in a sea current.

Seawater desalination is "high bi-pass" meaning that ~50% passes through as fresh water, the other ~50% as salt water at ~200% as salty as seawater. Seawater is abundant and is relatively cheap to clean prior to desalination.

The Perth Seawater Desalination Plant will be located in Kwinana next to the Kwinana Power Station. It will be approximately 10 metres high and will not be visible from the main roads in the area. It will look a lot like a typical Bunnings Warehouse.

The plant will produce up to 45 gigalitres of water each year or 130 million litres per day. This is approximately 17 per cent of the current restricted demand from the Integrated Water Supply Scheme.

http://www.watercorporation.com.au/w...nation_faq.cfm

Salinity in Cockburn Sound varies naturally from 33 to 37ppt (parts per thousand); depending on the time of year and the location (this corresponds to around 25kg of salt in every 1000L of water). The Environmental Protection Agency (EPA) has set strict criteria for salinity. This requires that the salinity immediately after discharge (i.e. within 50m of the discharge point) be within +/- 1.2ppt of background levels. Once the discharge is more than 1 km offshore, salinity must be within +/- 0.8ppt of background levels.

http://www.watercorporation.com.au/w...nation_faq.cfm