So you want RO water faster?

[Buckeye Hydro]

So you're probably familiar with residential scale RO systems of 75, or 100 gallons per day, and you may have wished for faster RO water production. Here's a 1,500 gpd commercial RO system with a custom control system we recently installed in our local public aquarium. The system produces about 1 gallon per minute, and simultaneously feeds four 500 gallon storage tanks. RO water sent to each tank can be controlled with a selector switch. The system runs at only 80 psi to minimize energy consumption, and it runs at about 50% recovery (a 1:1 ratio of concentrate to permeate). She's a beauty!

 

[14 foot reef]

Nice work Russ !!!!!

 

[MaddyP]

So you're probably familiar with residential scale RO systems of 75, or 100 gallons per day, and you may have wished for faster RO water production. Here's a 1,500 gpd commercial RO system with a custom control system we recently installed in our local public aquarium. The system produces about 1 gallon per minute, and simultaneously feeds four 500 gallon storage tanks. RO water sent to each tank can be controlled with a selector switch. The system runs at only 80 psi to minimize energy consumption, and it runs at about 50% recovery (a 1:1 ratio of concentrate to permeate). She's a beauty!

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Sweet setup!! Does this have a DI stage or is it possible to add a DI stage to such a robust system?

 

[Buckeye Hydro]

No DI on this particular system. If the customer had wanted it, and considering the water volumes involved, we would have gone with a DI tank rather than a DI cartridge. TDS of the RO water is apx. 5 ppm.

 

[Cment]

WOW, thats a thing of beauty! I wish I could get a gallon per min HA!

 

[RMS18]

Would that be to much for my 50 gallon system?

 

[Buckeye Hydro]

Nope - especially if you're impatient!

 

[Halal Hotdog]

Curious what something like this cost them.

 

[WWIII]

Curious what something like this cost them.

Let's all guess. I guess somewhere around $6k

 

[dragon99]

Curious what something like this cost them.

http://www.buckeyehydro.com/commercial-ro-system-2000-gpd/

Sounds like the install was more than just an RO unit though. The $6k estimate might be about right.

 

[Buckeye Hydro]

That control box was a one-off we made just for this job.

 

[Buckeye Hydro]

Its a 1500 gpd RO with some add on's (recirculation needle valve and flow gauge, extra low energy membranes, high pressure switch, inline DM2 TDS meter

 

[Buckeye Hydro]

You can find our commercial RO systems - along with our other RO systems here: http://www.buckeyehydro.com/ro-systems/

Will make a post soon about a 4000 gpd (2.8 gallons per minute) RO along with the pretreatment softener and carbon tank, and custom controller we're currently working on.

Russ

 

[Buckeye Hydro]

For you RO wonks out there, you may have noticed the 50% ish recovery on commercial RO systems. Trivia question for you: what is the biggest water quality issue that allows these systems to run at a 1:1 waste to permeate ratio?

Russ

 

[Chad3407]

Pressure?

 

[Buckeye Hydro]

The commercial systems do operate at higher pressure, but that's not the key thing.

 

[WWIII]

Ammonia from chloramines?

 

[Buckeye Hydro]

Chloramine can be present in feedwater to both residential and commercial systems, so... nope.

 

[Buckeye Hydro]

The biggest difference, is in the specifications for feedwater quality for commercial systems. Commercial systems are routinely run at 50% recovery (1:1 concentrate to permeate ratio), and nearly always specify that the feedwater must be softened - i.e., have less than 17 ppm (1 grain per gallon) Total Hardness. THAT's the ticket!

 

[dragon99]

Can a normal home RO be run at that recovery ratio?How would I achieve that? I want to say last I measured I was somewhere around 2:1.

My feedwater is only 7!