RO unit install problem.

[Saltar]

That is probably why I am only seeing the 45 PSI is because of the double sediment. I will fix this and post results. I read you where the expert on RO/DI seems to very true. Thanks again.

 

[AZDesertRat]

Rarely are two sediments or two carbons needed. Its much better to have one good of each rather than multiple mediocre filters every time. If sediment of silt is a problem there are backwashable or rinsable sediment filters that work good and still only require one.

One thing you can do quickly to see if you may be wasting too much and losing pressure down the drain is to kink the end of the waste line temporarily and see what your pressure rises to. If it rises more than a few psi then your waste ratio is probably too high without even looking at it. You should only see a few psi pressure drop between static and flowing pressure and make sure your are using ONLY cold water, no blending hot and cold and no partially open valves, on or off no in between.

 

[Saltar]

The company I bought this doesn't seem to have just a DI unit any idea where to get one? Also interesting note I went to LFS near where I work to get a TDS they sad don't carry one. I ask how they checked their RO water he said they don't use RO water they just take the chlorine and put it the tanks. He says the water quality good enough and that the high calcium the city water has is good or the reef tanks. One I know that city water can't be that good and 2 never get water from this store again!


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[AZDesertRat]

I think I would find another LFS if it were me. RO/DI is cheap insurance and provides the consistent quality and stability a reef system needs.
For an add on DI as well as a good handheld TDS meter I would look at www.spectrapure.com . They custom blend all their DI resins in house based on thousands of hours of real world testing so its the very best and its often blended and vacuum sealed in mylar foil bags the day it ships so it is completely fresh. Look for their SilicaBuster or Super SilicaBuster for your application.

 

[Saltar]

If I get the following items would I be set?

 

[Saltar]

[FONT=Arial, Helvetica, sans-serif]High-Capacity MaxCap[FONT=Arial, Helvetica, sans-serif]®[/FONT] 2-Stage System w/ Wrench, Dual Meter, etc.

[/FONT][FONT=Arial, Helvetica, sans-serif]Manual Operated Booster Pump Kits [/FONT][FONT=Arial, Helvetica, sans-serif]
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[TD="width: 19%, align: center"][FONT=Arial, Helvetica, sans-serif]BPHF-MO-115
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[TD="width: 14%, align: center"][FONT=Arial, Helvetica, sans-serif]115[/FONT][/TD]
[TD="width: 20%, align: center"][FONT=Arial, Helvetica, sans-serif]100 (378)[/FONT][/TD]
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[AZDesertRat]

The SilicaBuster/MaxCap dual DI is the best you can buy and what I use myself. My DI life went from 150 gallons per DI cartridge when I was suing normal nuclear grade mixed bed resin to over 1000 gallons per cartridge when I switched and the treated RO/DI water is a true 0 TDS or 18+ megaohms resistivity unlike before. It will pay for itself if you make much water at all.

I also use the Aquatec 8800 booster pump and set it at about 95 psi so my rejection rate is still running over 99.4% even after 5 years on the same RO membrane. Booster pumps do a world of good.

 

[Saltar]

Ordered it all should be here next week. Thanks for the advice!


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[Bow]

Looking into rodi's and this has been a big help. I'm wondering if either of you know what kind of pressure out the waste line you get. The only place I can really hook up a unit is in the basement and will have to drain to an ejector pump. No city sewer just an old cesspool. Trying to find options with the waste water. Have read that a lot of people use it in washing machine but probably not a good idea with a front loader. Not really looking to get crazy with pumps and plumbing. Not expecting to be able to run a sprinkler off it but would it push up 10-15'? Maybe I can get creative with a rain barrel or something

 

[AZDesertRat]

If you increase the head on the waste line by piping up from a basement or long lines horizontally, you change the waste ratio so must change or adjust the flow restrictor to bring it back to 4:1. Its no big deal and can be done easily as long as you watch the ratio so you don't foul the membrane due to inadequate flushing via the 4:1 waste. A $5 capillary tube flow restrictor can be trimmmed to meet your needs.
Make sure you use an air gap if you plan to fill a barrel etc. so you don't create a cross connection with the potable water supply.

 

[Saltar]

My waster pressure is probably less than 10PSI but guessing will increase when I goto the pump. AZ is the proven expert thou he will probably give you exact amounts.


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[Saltar]

Finally got the Max Cap DI, booster pump, and hand held TDS. Some numbers tap water 114, after RO 5, after DI 0, and interesting thing LFS water which I have been using which is RO only 34. Water trickles slowly out of DI but good results. Also booster set at 90 gage bounces around a lot not sure if that normal. Thanks for all the help.

 

[Bow]

Now I know nothing is ever perfect, but what do you guys think of the systems that claim a 1:1 or even 1:2 ratio?

 

[AZDesertRat]

There is only one proven low waste RO/DI on the market that actually works and lasts as claimed, the Spectrapure MaxCap UHE. The reason it is different from all the others is it uses stored DI water to flush and pickle or store the RO membrane when its shut off unlike all the others that use tap water which is not what you want on the treated side of your membrane.
My UHE is over 5 years old, my tap water TDS averages around 630, my RO only water is always bewteen 2 and 3 using a calibrated COM-100 handheld TDS meter and the DI lasts over 8 times longer than with my previous system. I am running a slightly less than 1:1 waste ratio. The rejection rate is about 99.43%.
Others have attempted to build a system such as this but they neglected the most important things like the microprocessor controller and the use of stored DI water. By using DI to flush the membrane stays clean and thenm when you store the membrane soaking in DI it cleans it even further and you do not have to deal with TDS creep.

 

[Bow]

Ok thank you. Hate even thinking about expensive stuff when there is no way to go somewhere and play around with it to see if it actually does what it says

 

[AZDesertRat]

Ya, the cost is not cheap but I found it paid for itself in the second year of use versus my old AWI Typhoon RO/DI system and all the replacements it required and the water and sewer cost savings.
You may find Spectrapure systems in your better LFS. I know around here the top 4 or 5 LFS all use Spectrapure systems up to like 3,000 GPD plsu many or the coffee shops use them too. A buddy of mine has a contract with a famous coffee house to service all their RO/DI and remineralization systems around the state, good gig.