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The Forum > Article Comments > The world’s media is focused on Net-Zero emissions…what about Net-Zero discharges of waste water? > Comments

The world’s media is focused on Net-Zero emissions…what about Net-Zero discharges of waste water? : Comments

By Charles Essery, published 5/11/2021

Sydney discharges more water into our rivers and oceans than it consumes through our water supply. There is no water shortage.

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What about? What about the fact that some people these days enjoy being miserable about everything, and enjoy trying to make other people miserable?
Posted by ttbn, Friday, 5 November 2021 7:50:27 AM
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One issue the article did not address was the issue of water storage. To recycle water from either storm water runoff or sewerage you presumably need to firstly capture and store it, and subsequently treat and purify it.

Capture and storage is going to be the problem. Are you going to tap a very large number of storm water channels? Land prices are very high around Sydney, for example, so capital costs will be high. Also, near the coast the topography is relatively flat so suitable sites for constructing even a modest storage dam are few. The alternative is expensive excavation or pumping water a long way uphill to a cheaper site.

It seems to me that water recycling is probably more expensive for coastal cities than building new dams in their hinterland.
Posted by Bren, Friday, 5 November 2021 8:20:07 AM
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I have always wondered why the installation of a rainwater tank isn't mandatory for all new dwellings constructed? That would be a fairly simple low cost start?
Posted by ViolentEntropy, Friday, 5 November 2021 9:18:12 AM
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Good idea! And if would remove our self-imposed embargo on nuclear power? We could roll out cheaper than coal, safe, clean thorium nuclear power in around a year!

And with that roll out in our hands to use as we see fit! Able to AFFORDABLY pump that same nutrient-loaded wastewater as far inland as we would want and in steel pipes made locally in affordable production thanks to a new and vastly cheaper, carbon-free, SAFE nuclear power fuel source that remains reliable, regardless of the weather!

And produces less radiation as rogue emissions than coal-fired (smokestack uranium and radon) power or gas!

But that's not the end of the good news! This same water can be treated in closed cycle, smell free, wastewater treatment plants to extract considerable volumes of endlessly sustainable and saleable biogas, i.e. methane.

And if scrubbed in decarbonised vacuumed water, cleaned sufficiently to be fed into fuel cells that produce electricity in commercial quantum and produce mostly pristine water vapour as the exhaust product!

That electricity could and should be distributed via underground graphene cored cables to quite massively reduce distribution losses and could be the power source for citywide, electric vehicle, rapid recharge stations!

Yes I know, it'll cost a motza! But affordable if done off-budget and repaid via the earnings provided by the assembly of recharge stations.
Alan B.
Posted by Alan B., Friday, 5 November 2021 12:41:02 PM
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Yes Alan B and We could build an MSR trial plant at Kurnell (Sydney) or Wontaggi (Melbourne) and then use the white elephant seawater treatment plant ( desalination plant ) to turn wasted effluent an stormwater into safe cheap drinking water!

Gould we get the recently woke/Green Financers ( I think they could call themselves Net Zero Finance) to funds the pilot study?
Posted by Alison Jane, Friday, 5 November 2021 2:42:27 PM
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Aidan,
You’re not going to get thorium reactors whilst politicians, of whatever ilk, dream of having a nuclear Arsenal.
We could have had thorium power ages ago if it were not for the bomb lovers.
China, it appears, is experimenting seriously with thorium reactors for clean energy.
Posted by Is Mise, Friday, 5 November 2021 2:53:49 PM
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