View Full Version : Ro Tds
Flibidib02
17-10-07, 13:31
Just wondering the average Feed Water (Line In) TDS that we push through our Water Purification systems....
Also, if it's not visible and you have no problem, please post your location so we can have a rough idea of water quality in that area....
My feed TDS is over 500ppm at times but is normally around the 460-480 mark.
Surface water collection as well so nitrates and phosphates are silly when the farmers are out doing their thing.
Post-membrane it gets to 3ppm (and 0ppm post-di), so a very nice rejection ratio there due to running a pump at 95psi.
Allen James
17-10-07, 14:39
When I lived in salisbury wilts, TDS in was 250
I now live in solihull, west mids - TDS in is 40
260 going in to the unit 0 coming out
Around 160 in, 8 after pre filters and then zero after di unit :)
364 in Oxford. Makes you not want to drink it really:eek:
364 in Oxford. Makes you not want to drink it really:eek:
Near SCOOB so same(ish) i don't drink the water where i live unless i filter it, you really can taste "something" in it especially if you cook with it:sick:
470 at times, east kent.
Bloody disgrace:annoyed:
I have about 800ppm, after the ro man 300g 6 stage unit (NO DI but getting a double one)the lowest it got was about 25. Should i increase the pressure because its only about 40 at the moment, and the tds meter goes crazy sometimes. doesnt give a constant reading and when i open the ro tap first the reading goes up than after 5 min it starts coming down. Im not sure if ths is ok
I have about 800ppm, after the ro man 300g 6 stage unit (NO DI but getting a double one)the lowest it got was about 25. Should i increase the pressure because its only about 40 at the moment, and the tds meter goes crazy sometimes. doesnt give a constant reading and when i open the ro tap first the reading goes up than after 5 min it starts coming down. Im not sure if ths is ok
You could try buying a booster pump from RO man as you pressure is a little low, you may find though that you need to change your pre filters if your not gettting it down to close on zero without a di unit you should get around 6 to 8 not 25 that your getting.
As you have no DI unit i would recommend getting one as well as this will help you to get your reading down to Zero but you need to have the reading as i say down to 6 to 8 before the DI unit. :)
you have to read the post slowly !! :)
Boost your pump up it increases efficiency and it's quite normal to get high readings when you start as the water has been laying about and the membrane can leach baddies, this is why you should flush for around 10 mins before you start collecting.
my ro man gauge has red and black numbers, is the psi in black? one of the filters is already orange and i hvnt used it a lot yet. where should i place the pump?
my ro man gauge has red and black numbers, is the psi in black? one of the filters is already orange and i hvnt used it a lot yet. where should i place the pump?
PSI is in Red.
The pump goes inline to the feed of your RO unit, your mains tap water goes into the booster pump then from the pump into your RO unit.
I see your in Malta, does your water have a large copper content to it as you say one of your filters has turned orange? :)
Hers an image of mine.
http://www.ultimatereef.net/uploader/2007Q2/RO Unit.jpg
:thumbsup:
and here's another one
http://www.ultimatereef.net/uploader/2007Q2/DSCF0577%20(Medium).JPG
I run mine at about 95psi, which gets me from 500ppm input to 3ppm output, and that's with series linked membranes (which means the waste output of the first goes into the input of the second and the product outputs are combined)
Thread is here: http://www.ultimatereef.net/forums/showthread.php?t=215676
Around 400ppm line in. Rayleigh, Essex.
neilharris
18-10-07, 09:56
Basingstoke - ave about 280
Anywhere between 250 - 350. West Sussex
close to 600 in the summer but now just over 450! chelmsford, essex!
230 to 240ish here in Leeds.
Jay
so you just switch on the pump when your going to use the RO? you dont leave it always on? coz mine is under the sink and i could use also for drinking.
BTW (maybe it sounds stupid) when i close the ro tap, at the top of the sink and the ro is under pessure from the mains,how does it stop from producing waste water since there is no tap?
so you just switch on the pump when your going to use the RO? you dont leave it always on? coz mine is under the sink and i could use also for drinking.
BTW (maybe it sounds stupid) when i close the ro tap, at the top of the sink and the ro is under pessure from the mains,how does it stop from producing waste water since there is no tap?
Yes you just switch on the pump when you want to make RO water and switch it off when done.
You should switch off the RO unit with a tap on the inlet to the ro unit and the outlet of the ro unit, this keep the unit under pressure and keeps the membranes wet.
:)
so you just switch on the pump when your going to use the RO? you dont leave it always on? coz mine is under the sink and i could use also for drinking.
BTW (maybe it sounds stupid) when i close the ro tap, at the top of the sink and the ro is under pessure from the mains,how does it stop from producing waste water since there is no tap?
pump - a high pressure switch on the RO outlet could switch the pump.
Waste production - one of these (clicky picture to RO-MAN)
http://www.ro-man.com/shop/images/Autoshutoff.jpg (http://www.ro-man.com/shop/product_info.php/cPath/25/products_id/216)
will do it. You plumb it into the product output and the waste output (some say product and source but :p to them) and when the pressure on the product goes up it shuts down the waste as well. Open the product tap again and the waste opens....
HOWEVER, running an RO system for frequent short bursts like this doesn't do it any good at all, so in all seriousness just adding a tap onto an RO output isn't the best idea.
Yes you just switch on the pump when you want to make RO water and switch it off when done.
You should switch off the RO unit with a tap on the inlet to the ro unit and the outlet of the ro unit, this keep the unit under pressure and keeps the membranes wet.
:)
i have a tap before the inlet and i also have one after but why should i close it if there is a tap on the sink?
pump - a high pressure switch on the RO outlet could switch the pump.
Waste production - one of these (clicky picture to RO-MAN)
http://www.ro-man.com/shop/images/Autoshutoff.jpg (http://www.ro-man.com/shop/product_info.php/cPath/25/products_id/216)
will do it. You plumb it into the product output and the waste output (some say product and source but :p to them) and when the pressure on the product goes up it shuts down the waste as well. Open the product tap again and the waste opens....
HOWEVER, running an RO system for frequent short bursts like this doesn't do it any good at all, so in all seriousness just adding a tap onto an RO output isn't the best idea.
Why doesnt it do it any good to use it that way and why is it wrong to have a tap on the outlet?
My TDS is 50 in Liverpool. They've done a load of work on the pipes in the area and for the last week or so it's been bouncing around 100 :(
jimdon IOM
18-10-07, 19:23
63 to 65 Isle of Man
steve@ cambridge coral tech
19-10-07, 00:00
avarages 400 in around cambridge:eek:
Chrissyhac
19-10-07, 12:22
Mine averages 320, Sutton Coldfield. Hard Water, (you should see the state of our kettle !! :D ), could this cause us other problems I wonder ?? The unit usually runs at 65 psi, is there an optimum pressure ?
25 for me in Edinburgh:thumbsup:
Just tested mine 355 I have known it to be higher though Hull,
Regards,
sharemaster
20-10-07, 00:53
90tds at 90psi mains pressure and 1 before di pod up in Huddersfield. :)
DairyleaMonster
24-10-07, 11:06
Currently averaging at just over 100 in Jarrow, Newcastle
But at my last house, in a pit-village near Durham, it averaged at about 600-700, and regularly went over 900! It even went above 1000 a couple times!!!
Would seem that all reefers should move to Edinburgh:D
Ding Dang Doo
24-10-07, 11:15
Slight tangent... is the water drinkable after it's been through the DI?
Pete
There was a thread on here some time ago about that, it is fine to drink as it is as pure as water can be, but Dentists say that that flouride/ calcium in the water is beneficial, for the kids especially. But whenever i try to syphon some out of my storage bin i end up drinking some.
SpanishTony
24-10-07, 11:30
150 ish in Northwich, Cheshire
chrisjames
24-10-07, 16:16
mine comes in at 475 in hertfordshire
Over 500 in. 6 out (after a while). 0 post DI.
Bath water. Not bath water. I live in Bath :)
Around 250 mark from tap - Winchester, Hampshire
for when I get round to producing my own RO I have a TDS meter ready!
Between 450 and 500, second that about moving to Edinburgh:laugh:
Chris
400+ I'm in Suffolk close to the Cambs/Essex border. Very hard water.
Ding Dang Doo
02-11-07, 08:20
Now up and running (it really is quite logical when you start to put everything together!):thumbsup:
In 115, out (post DI 0) Bolton.
Pete
Basingstoke - ave about 280
Yup, that is very true
Chrissyhac
02-11-07, 23:14
Slight tangent... is the water drinkable after it's been through the DI?
Pete
Hi, just read this in the "Ro-Man" instructions; "Please note, the DI resin is not suitable for drinking water"
HTH ;)
Chris.
170-190 derby,2 pre di at 75psi,0 post di
Hi, just read this in the "Ro-Man" instructions; "Please note, the DI resin is not suitable for drinking water"
HTH ;)
Chris.wont hurt you just makes the water unpalatable,in other words the water is just wet nowt else in it:) regards mikk
80ish near Preston. About 2 after ro unit.
450 close to Lakeside, Essex.
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