For nations that exist by re-use of their domestic waste water how is the overall O2 saturations affected? Do we understand these impacts?

For example, strong suggestions of re-boiling a kettle of the same water will deplete the O2 saturations over time. Is that correct?

If true does that water end up eventually impacting the O2 saturations of water system where full re-use of domestic water is recycled continuously? Will the saturations reduce over time or does the process for water purification counter those neglible impacts?

I am considering the contributing impacts this may have on the Thames because they do re-use the water in the UK and the Thames will not survive without artificial aeration … while other factors are at play there…no doubt. How is water re-use impacting the 02 saturations…is there another risk factor added to by the continual re-use of th domestic waste water?

build up of hormones in the water, subtle chemicals, fluoride if they add it

They should build a couple of power fountains in the Thames. It costs money to run, but it would look good and aerate the water.

Kingy said:

They should build a couple of power fountains in the Thames. It costs money to run, but it would look good and aerate the water.

use the tide and movement of water to compress air in large tanks and release ?

wookiemeister said:

Kingy said:

They should build a couple of power fountains in the Thames. It costs money to run, but it would look good and aerate the water.

use the tide and movement of water to compress air in large tanks and release ?

fkn crazy idea. Why would you use free energy when we have all these tar sands to burn?

ratty one said:

For nations that exist by re-use of their domestic waste water how is the overall O2 saturations affected? Do we understand these impacts?

For example, strong suggestions of re-boiling a kettle of the same water will deplete the O2 saturations over time. Is that correct?

If true does that water end up eventually impacting the O2 saturations of water system where full re-use of domestic water is recycled continuously? Will the saturations reduce over time or does the process for water purification counter those neglible impacts?

I am considering the contributing impacts this may have on the Thames because they do re-use the water in the UK and the Thames will not survive without artificial aeration … while other factors are at play there…no doubt. How is water re-use impacting the 02 saturations…is there another risk factor added to by the continual re-use of th domestic waste water?

What?

The O2 saturation is a fairly transient thing.

dv said:

ratty one said:

For nations that exist by re-use of their domestic waste water how is the overall O2 saturations affected? Do we understand these impacts?

For example, strong suggestions of re-boiling a kettle of the same water will deplete the O2 saturations over time. Is that correct?

If true does that water end up eventually impacting the O2 saturations of water system where full re-use of domestic water is recycled continuously? Will the saturations reduce over time or does the process for water purification counter those neglible impacts?

I am considering the contributing impacts this may have on the Thames because they do re-use the water in the UK and the Thames will not survive without artificial aeration … while other factors are at play there…no doubt. How is water re-use impacting the 02 saturations…is there another risk factor added to by the continual re-use of th domestic waste water?

What?

The O2 saturation is a fairly transient thing.

what levels need to maintain a water eco system such as the Thames then?

are you aware of the levels likely after treatment processes currently?

just a few more sleeps until santa arrives

oops

just a few more sleeps until santa arrives

i think the thames is a lot cleaner than people think. over the past few decades a great deal has been done to inprove water quality. there has been an increase in fish, birds and mammals coming back into the system.

Boris said:

i think the thames is a lot cleaner than people think. over the past few decades a great deal has been done to inprove water quality. there has been an increase in fish, birds and mammals coming back into the system.

perhaps I was querying whether the contributory causes may be related to some degree the water re-use program rather than the usual environmental suspects like over nutrient etc etc

nutrients are about the only problem these days from what little i have read. there is some controversy over a new waste water tunnel, tideway tunnel.

http://cleanthames.org/

or

http://www.thamestidewaytunnel.co.uk/the-project/benefits

two views.

ratty one said:

For nations that exist by re-use of their domestic waste water how is the overall O2 saturations affected? Do we understand these impacts?

For example, strong suggestions of re-boiling a kettle of the same water will deplete the O2 saturations over time. Is that correct?

If true does that water end up eventually impacting the O2 saturations of water system where full re-use of domestic water is recycled continuously? Will the saturations reduce over time or does the process for water purification counter those neglible impacts?

I am considering the contributing impacts this may have on the Thames because they do re-use the water in the UK and the Thames will not survive without artificial aeration … while other factors are at play there…no doubt. How is water re-use impacting the 02 saturations…is there another risk factor added to by the continual re-use of th domestic waste water?

Loss of O2 has no effect whatsoever, because water turbulence under air rapidly re-aerates the water. I did some work on this as part of a study into controlled rapid algae growth – rapid diffusion of oxygen into the water is needed for growing the algae.