Water Filtration / Reverse Osmosis / RO Affiliate

[Eoin]

Naa but might form my own Tea party

As long as you use your brain unlike those Yankee racist scumbags.

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[johnrm]

Isn't one of the point sin RO'ing water to remove hardness?
Pushing this water with higher concentration of salts into your tank is surely going to mean more hassle when it comes to shower doors etc.

[Eoin]

Isn't one of the point sin RO'ing water to remove hardness?
Pushing this water with higher concentration of salts into your tank is surely going to mean more hassle when it comes to shower doors etc.

I thought the same it'd fur your pipes quicker. Best in a greywater system possibly? In my opinion RO is for fish tanks....

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[brenmurph]

Dont think ye understand RO enough

The first 3 filters are 5 micron filters, thats incredibly small. Some one correct me but I think thats 5 millionts of an inch? There are three 5 microns in sequence.
Then the RO filter works on perfectly clean water and removes minerals that remain by flushing our as it only allows h2o through the membrane ( filter).

the sequence is filter-1....5 micron removes particles bigger than 5 micron, second filter ( carbon block) cleans up anything living ( microbes), third filter is I'm not sure but a polishing up anything that may have gotten through the first 2.

The first 3 filters let feck all through, it almost pure clean sanitary water. The lime/ calcium is caught in the first one and if u have hard water it will block quicker than normal so change it more than normal ( 6 euros or thereabouts).

The ro filter lets through H and 2xO ( H2O) any other minerals get flushed out and you end up with pure H2O. Thats what the flush is for. Normal filters dont have a waste system. So its not toxic waste water...its perfectly sound water. The flush is to remove anything thats not H or 2x0
the wastewater is pure clean water that hasnt gone through the RO filter. Its not full of minerals and pesticides or anything like it is a triple filtered water that has passed by 3 x 5 micron filters including a carbon to kill  / trap microbes. The 4th filter is the RO membrane and the 5th is to sweeten and  remove any odour that may come from the storage tank. I think its a ground coconut shell filter. The ppm measure after the RO is zero and after the last filter may read 10ppm

The 'waste' is perfect water and can be stored for other uses.
If you want very clean well filtered water you can leave off/ bypass the ro filter. This will speed up the flow significantly. The fifth filter is rated at 75 gallons per minute and 1500 litres, its the RO membrane thats slow.
A normal  under-sink water filter is usually a single carbon which cleans up well. the RO is a rolls-royce system that produces H2O. Any of the filters can be used on their own and will clean the water to some degree.

[Eoin]

Osmosis by its nature means that a solution passes from an area of concentration to an area of lesser concentration over a semi permeable membrane (Osmosis in reverse) , so I assumed that's what not passing over the membrane was more concentrated with minerals and salts. I understand that pesticides shouldn't really be in drinking water so that wasn't a concern, but the minerals are going somewhere. The best way to do it is not to retrofit and plan the RO system in. It's not good drinking water anyway. 0 ppm means a rebuild..... Good for some stuff but you'll never get it all back in there.

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[brenmurph]

@ eoin,
Good sciency quote   There seems terrible confusion about RO. the few posts on the waste seem to suggest that the waster is hard limey contaminated water its clearly not the case.
RO isnt natural as all water has minerals. I forget his name but the big brewer that has all the brewpubs in India was speaking at Alltech. He uses RO to ensure that water is safe and he adds back minerals to suit the brew.
I use RO and have for years;  main advantages is you have / should have sterile water / you know what you have, second is its absorbed by humans quicker so I recomend to my clients to use soft water especially after activity. Personally I enjoy soft / RO water more than the chalky hard Ballygowan stuff but its personal preferance.

re brewing as the fella from india says he know what he has then he adds minerals to suit the brew.
I brew with softened water via my softening system ( not RO) but am now putting a tap before the RO and using the triple filtered water as my main brew/ sparge/ topup water will take it off into a sterile 5-gall sealed container on brewday. This triple filtered water is far 'cleaner than municipal or even softened municipal water so thats my brewwater future.

[Eoin]

I'd not recommend RO or softened water as drinking water for anyone with a young family. I know from anecdotal experience that bones won't develop as well due to low soluble minerals in drinking water. The anecdote relates to the Rugby playing family (3 bros) at boarding school who were all almost permanently injured with broken bones the chemistry teacher put it down to their softener.

As brew water I see the appeal, but realistically you need a lab behind you, or a lot of understanding to build a proper scratch water profile... IMO of course.

TT

[brenmurph]

the rugby isnt really a starter for me because a healthy diet with fruit veg nuts and seeds will give an abundance of minerals

re brewing agree but prob worth gettin a general stab at it. Just bring willD out for a pint or two ye may do well extracting some ideas