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03/27/2008, 09:55 AM
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#1 |
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Registered Member
Join Date: Mar 2006
Location: South Jersey
Posts: 208
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Ro Waste Water
Is it safe to drink RO waste water?
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03/27/2008, 10:10 AM
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#2 |
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Registered Member
Join Date: Jan 2008
Location: Texas
Posts: 78
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Yes it's safe. We had this discussion about a month ago. It's basically tap water. I use my waste water for tea, coffee & f/w tanks. I'm not dead yet...
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160 Gallon (African Cichlids),120 Gallon (2-Green Spotted Puffers & 1-Stars & Stripes Puffer),90 Gallon (semi planted tank w/ Angels, Apisto's, Rams.), 28 Gallon (Semi-planted Kribs), 2.5 Gallon RCS Current Tank Info: 125 Gallon 6' long (Saltwater Puffer Tank) 2-Green Spotted Puffers & 1 Porcupine Puffer |
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03/27/2008, 10:37 AM
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#3 |
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Registered Member
Join Date: Dec 2007
Location: Illisconsin
Posts: 172
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Someone from one of the RO companies said the waste water could have very high levels of flouride and he recommends not drinking it. I'm not a doctor I wouldn't know but thats what I was told.
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03/27/2008, 10:39 AM
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#4 |
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Registered Member
Join Date: Sep 2007
Location: texas
Posts: 23
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not just tap water more like super concentrated tap
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03/27/2008, 11:12 AM
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#5 |
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Moved On
Join Date: Jan 2002
Location: NW Phoenix
Posts: 16,621
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It has passed trough a sediment or particulate filter and carbon so from that standpoint it is similar to a Britta or Pur filter. The problem is since it carries the reject away from the RO membrane it will be harder and about 20 to 25% or more higher in TDS than the tap water was to begin with. This is somewhat dependent of what you have your waster ratio set at. The lower your waste the higher the waste TDS concentrate.
I run my new MaxCap UHE system at 1:2 or 1 gallon of waste for every 2 gallons of good (67% recovery) and my tap water TDS is between 600 and 800 so my waste TDS is more like 1800 or higher so I obviously do not want to drink it or put it in my swimming pool! With a tap water TDS of 250 which is about average and a normal 4:1 waste ratio you should see a waste TDS of 300 to 325 or so. |
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03/27/2008, 06:07 PM
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#6 |
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Registered Member
Join Date: Feb 2006
Location: Brooklyn, NY USA
Posts: 393
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I guess it would depend on how safe your tap water is.. haha
hmmm..... how do you set your waste water ratio? I don't think I can do that on mine? |
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03/27/2008, 09:38 PM
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#7 |
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Moved On
Join Date: Jan 2002
Location: NW Phoenix
Posts: 16,621
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The waste ratio can be set with either a capillary tube type flow restrictor trimmed to fit your exact conditions or an adjustable needle valve type restrictor or a combination of both which is what I have for precise control.
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03/27/2008, 10:08 PM
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#8 |
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Premium Member
 
Join Date: Jul 2005
Location: Owasso, OK
Posts: 301
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My RO is in the laundry room. I run the waste water into the washing machine sometimes so that it isn't completely wasted. Not sure I'd drink it though
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03/27/2008, 10:21 PM
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#9 |
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Texas Reefer
Join Date: May 2003
Location: Round Rock, TX
Posts: 13,656
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I run my into the lawn.
I don't think I would drink anything with the word waste in it though. I don't think it would be unsafe, but why do it?
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Rich Overton 150G cube FOWLR, 30g sump, ReefKeeperII, 3x Koralia 1400's, QuiteOne 3000, Reef Octopus DNWB150, 4x 30w Par38 LED. Current Tank Info: 36x36x27 150g |
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03/28/2008, 11:49 AM
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#10 |
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Registered Member
Join Date: Apr 2006
Location: Appleton, Wisconsin
Posts: 2,995
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Depending on your tap source, some waste water is cleaner than other peoples tap!!
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For my birthday i got a humidifier and a de-humidifier... I put them in the same room and let them fight it out. (Steven Wright) Current Tank Info: 40BR w/ 250w 14K Phoenix + 192w PC, 10g fuge w/ 55w PC, 10g sump, Eheim 1250 return w/ SCWD, ASM Mini G skimmer, Gravity fed ATO, Kalk doser, 1/10 HP chiller, 1 Vortec + 3MJs, all on an AC Jr. - Born on date 8-06 Pics in gallery! + 55g FOWLR w/ macro |
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03/28/2008, 10:42 PM
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#11 |
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Registered Member
Join Date: Mar 2006
Location: South Jersey
Posts: 208
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I have city water.. I bottled some up but i dont think im going to drink it
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03/29/2008, 12:02 AM
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#12 |
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Premium Member
Join Date: Mar 2003
Location: Atlanta GA
Posts: 2,848
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My waste water is lower in TDS than many bottled waters. I think a good Carbon block improves your water quality a lot VOCs TOCs...
I suggest for people in In our area (with low tDS tap water) tee into there RODI just after the prefilters. That way they don't need a pressure tank...
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Roland |
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