ro/di waste line recycle

jadeguppy · 08/20/2007, 04:00 PM

What do I need to get to recycle the waste water line back into the ro/di unit?

GTR · 08/20/2007, 04:09 PM

Never heard of doing it. But with each pass I'd think the TDS of the input would increase. RO removes a percentage so the output TDS would increase along with it. No?

SteveU

PSam · 08/20/2007, 04:12 PM

Or use the waste water for watering house plants, FW water changes, do laundry if top loader, run to yard plants... at least those are a few of things I do.

Amphiprion · 08/20/2007, 04:14 PM

Some people actually do this, except it uses a second membrane (and usually a pressure-boosting pump). It helps to boost output and reduce waste.

danskim · 08/20/2007, 04:24 PM

Yeah I need to start using the waste water for stuff haha.

jadeguppy · 08/20/2007, 07:24 PM

So if I did try to recycle the water back into the unit, would it wear out the filters faster? I was thinking that it would cut down on the wear and tear. I have started using it for fw changes and watering plants. I haven't seen any negative effects and I think the fw plants actually like the extra tds as fertilizer.

Amphiprion · 08/21/2007, 09:59 AM

No, it will wear things out faster, as the wastewater will have a higher TDS than the tapwater. Please don't misunderstand--you do not recycle through the same unit, etc.--it goes through a separate membrane, di resin, etc.

michaeljames · 08/21/2007, 02:37 PM

every time you re-run that water through the RO unit all the heavy metals it filtered out with the waste are being re-introduced and wearing out the unit that much faster

08/20/2007, 04:00 PM	#1
jadeguppy Registered Member Join Date: Jul 2007 Location: nw Florida Posts: 2,611	ro/di waste line recycle What do I need to get to recycle the waste water line back into the ro/di unit?

08/20/2007, 04:09 PM	#2
GTR Registered Member Join Date: Apr 2003 Location: Twin Falls, ID Posts: 7,152	Never heard of doing it. But with each pass I'd think the TDS of the input would increase. RO removes a percentage so the output TDS would increase along with it. No? SteveU __________________ AKA, Riff

08/20/2007, 04:12 PM	#3
PSam Registered Member Join Date: Feb 2006 Location: Chicago Posts: 3,036	Or use the waste water for watering house plants, FW water changes, do laundry if top loader, run to yard plants... at least those are a few of things I do. __________________ ..no vemos las cosas como son las vemos como somos nosotros...

08/20/2007, 04:14 PM	#4
Amphiprion Premium Member Join Date: Jul 2005 Location: Mobile, AL Posts: 6,611	Some people actually do this, except it uses a second membrane (and usually a pressure-boosting pump). It helps to boost output and reduce waste. __________________ You've done it now, haven't you? Current Tank Info: 40g breeder patch reef w/ seagrass; 2-250w XM 10K; Vortech MP40wES & MP10wES; BM Curve 7 skimmer; carbon & occasional GFO

08/20/2007, 04:24 PM	#5
danskim Registered Member Join Date: Jan 2005 Location: Ellicott City, MD Posts: 1,639	Yeah I need to start using the waste water for stuff haha. __________________ Dan The sea, once it casts its spell, holds one in its net of wonder forever. -Jacques Cousteau

08/20/2007, 07:24 PM	#6
jadeguppy Registered Member Join Date: Jul 2007 Location: nw Florida Posts: 2,611	So if I did try to recycle the water back into the unit, would it wear out the filters faster? I was thinking that it would cut down on the wear and tear. I have started using it for fw changes and watering plants. I haven't seen any negative effects and I think the fw plants actually like the extra tds as fertilizer.

08/21/2007, 09:59 AM	#7
Amphiprion Premium Member Join Date: Jul 2005 Location: Mobile, AL Posts: 6,611	No, it will wear things out faster, as the wastewater will have a higher TDS than the tapwater. Please don't misunderstand--you do not recycle through the same unit, etc.--it goes through a separate membrane, di resin, etc. __________________ You've done it now, haven't you? Current Tank Info: 40g breeder patch reef w/ seagrass; 2-250w XM 10K; Vortech MP40wES & MP10wES; BM Curve 7 skimmer; carbon & occasional GFO

08/21/2007, 02:37 PM	#8
michaeljames Registered Member Join Date: Mar 2007 Location: Rochester NY Posts: 737	every time you re-run that water through the RO unit all the heavy metals it filtered out with the waste are being re-introduced and wearing out the unit that much faster __________________ "This tastes like crap!" "Well here, try it with some selcon and garlic..." Current Tank Info: 180g RR AGA 2 x 250w SE MH 1 x 175 SE MH 2 x 6' Super atinic VHO Iwaki 100 return Reef Octopus Skimmer