Clean It Up
UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: Cliff perkins on December 14, 2013, 12:38:05 pm
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hi
I'm moving house soon and going on a water meter and would like to save water.
would a twin 4040 reduce my wastage or increase it.
also how would i set up the pipework for the two 4040s
can't find any diagrams on the internet.
any help or info on saving water appreciated.
regards cliff
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Go to gapswater.co.uk there's a little diagram on where the pipes go regarding the second membrane
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hi
I'm moving house soon and going on a water meter and would like to save water.
would a twin 4040 reduce my wastage or increase it.
also how would i set up the pipework for the two 4040s
can't find any diagrams on the internet.
any help or info on saving water appreciated.
regards cliff
I was gona post exactly the same question. I'm interested on getting the best pure water/ waste ratio. Possibly recycling the waste into my existing Merlin
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looked at gaps but picture not to clear.
does any1 do it on here and are there more than 1 way to set up a twin 4040
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http://www.gapswater.co.uk/acatalog/Twin-RO-kit-1190.html
Thats what i meant, it show you hows its connected up, its not a great diagram but you get the idea
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I'm also very interested in going for this this type of set up, any info, diagrams and pics would be great.
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click the above link ::)roll it will show you the way they are connected from waste
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I thought the best way was to have the waste from the first 40/40 going into the second 40/40 as the input.
I was told the filters on the second 40/40 dont last as long as the first. But filters VS waste costs makes it very worth while.
Or have I been sold a load of poop lol
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I thought the best way was to have the waste from the first 40/40 going into the second 40/40 as the input.
I was told the filters on the second 40/40 dont last as long as the first. But filters VS waste costs makes it very worth while.
Or have I been sold a load of poop lol
No, you are 100% right. That is the way to do it to save water.
R/o membranes will have to be replaced at the same time so an expensive outlay. Water purity will be poorer as the higher pure ppm from the second r/o will 'contaminate' the pure from the first r/o increasing resins costs a bit.
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I think you have to do the sums according to your tap water ppm .
for instance some people have 400ppm from the taps so the waste stream would be very high ppm.
However if you have 200 ppm from the taps the waste stream going to your second ro is still likely to be less than 400 ppm .
The lower your tap tis i think the more it makes sense to plumb them in series .
unless its low enough to go di only.
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I think you have to do the sums according to your tap water ppm .
for instance some people have 400ppm from the taps so the waste stream would be very high ppm.
However if you have 200 ppm from the taps the waste stream going to your second ro is still likely to be less than 400 ppm .
The lower your tap tis i think the more it makes sense to plumb them in series .
unless its low enough to go di only.
Christ i have 475ppm :o
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I think you have to do the sums according to your tap water ppm .
for instance some people have 400ppm from the taps so the waste stream would be very high ppm.
However if you have 200 ppm from the taps the waste stream going to your second ro is still likely to be less than 400 ppm .
The lower your tap tis i think the more it makes sense to plumb them in series .
unless its low enough to go di only.
Our tap tds is 115. I'm sure I once checked the waste tds of nearly 200. R/o isn't on at the moment as the IBC tank is brimming. I will take a reading next time the r/o is on this week.
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If you have waste from the first 40/40 going into the second 40/40 as the input does that mean you're producing more water per hour because theres no waste water outlet ?
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You still have a waste. But it's on the second RO.
two separate 40/40 Ro's would produce more pure that a twin 40/40 with recycled waste.
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Either set up will produce more water than a single ro but the above is correct .
In series will reduce the amount of waste wAter.
Connected in parallel production should double assuming you have adequate pressure and flow to feed both .
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I think you have to do the sums according to your tap water ppm .
for instance some people have 400ppm from the taps so the waste stream would be very high ppm.
However if you have 200 ppm from the taps the waste stream going to your second ro is still likely to be less than 400 ppm .
The lower your tap tis i think the more it makes sense to plumb them in series .
unless its low enough to go di only.
Our tap tds is 115. I'm sure I once checked the waste tds of nearly 200. R/o isn't on at the moment as the IBC tank is brimming. I will take a reading next time the r/o is on this week.
At the moment tap tds = 90, r/o waste = 141
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Spruce , i think a double ro in series would work well on your tds as your waste stream is lower than a lot of ro users tap tds.
of course if your not on a meter and your making enough water probably not worth your while .
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after reading this lot,is it worth while to go twin 4040 if your on a water meter or is the water savings just not worth it.
im intrested to know from any1 thats on a water meter if it makes much sense,i.e. the water you save via water bills and costs of replacing the membranes and if they need to be changed more regular etc.
regards
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Be handy to know what your tds is and amount of L you need a day............
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Spruce , i think a double ro in series would work well on your tds as your waste stream is lower than a lot of ro users tap tds.
of course if your not on a meter and your making enough water probably not worth your while .
I think another issue would be the volume of water available. I don't believe we would have enough so would have to consider a booster pump. At the moment the single r/o works fine and produces more than enough for us and we also aren't on a meter.
Going from the old 450 gpd RoMan type r/o to this has reduced our waste water anyway.
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hi my tds is about 400 to 365
i use around 400 to 500 a day
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hi my tds is about 400 to 365
i use around 400 to 500 a day
Is just go with single 40/40
Why not catch some rain water as well ;)
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can't be arsed with rain water lol,
i like it simple if i can. ;)
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If your looking to save water, I think the small ro's are good for that. We use a 300 gpd pump Ro. 2x150 membranes and this runs 24/7 and services 3 vans. Ok it doesn't make it as fast as a 4040 but it'll make it a better quality. As long as there is enough each time you go back to fill up who cares how quick it makes it