Disturbed.)
- #1
Wondering if anyone else out there has tried it? From what little I could find out in the either the concept seems sound and that the permeate pump would still act as a 100% auto shut off and still separate the back pressure from the tank and the membrane pressure.
I just experimented with it and found that the permeate pump never once cycled. I don't have the time or the gear to measure and break down the flow numbers just know that when I ran it without the booster on a single membrane it worked rather well as far as permeate:brine with my low pressure. I could also hear it loudly knocking then. My new system has a waste water recovery membrane and I knew my 36 psI couldnt support that so I added an aquatech 8800 and looped in the old ERP1000. Run times on the pressure pump are pretty much the same with or without the ERP. Ill get some TDS readings before the dI over the next week or so with it back off then reinstall it clock those. Then again without an auto shut off
If anyone else has tried this I'd love to know what you've found.
Dislcaimer Needed I guess I sould also mention that I did call Bulk Reef Supply and told them what I planned to do with their water saver package and they said that tanked systems are not generally recommended with a second membrane because of pressure issues and I told them I was going to boost just could not get that from them because they were currently out of stock. They then told me that they weren't familiar with running a permeate pump without an auto shut off but gave me clear instructions over the phone on how to set up a permeate pump in the system I was ordering. What I am trying to do is maximise efficiency but still retain a pressure tank so that we can drink the water as well as let the fish get theirs. If anyone is interested Ill update my findings and include pics of the configuration of each setup. My gear is near the ceiling though so pics won't be the best angles
Day two without the permeate pump and both readings both days shows an improvement. Running both pumps with an auto shutoff valve for 3 days I had TDS readings coming into the DI stage at 9 ppm. I have had the same readings each time for the last couple days without the permeate pump at 5ppm. So far it seams that while permeate pumps are a benifit alone they only hinder a booster pump.
This will be the last post on this thread if it isn't of any interest to anyone. Todays results were from a mixing tank fill. Under normal operation all of the ro water comes from the tank with the exception being a mixing barrel fill that uses all of the tank 3.5 gallons and another 16 gallons the RO has to make on demand no back pressure. I have my mixing station ro input on a y with valves on ro and dI sides to control resin use. Today I started filling a 5 gallon top off jug and received a phone call from another fish keeper. I paid no attention to the jug because normally it would fill fast for a few gallons then take an eternity to finish off. Well within a 20 minute phone call I not only filled but flooded my utility room floor 2 towels deep. The pressure pump is that much faster and the reading are the same while filling and with an empty tank 4ppm as long as I remember to flush the membrane first.
I just experimented with it and found that the permeate pump never once cycled. I don't have the time or the gear to measure and break down the flow numbers just know that when I ran it without the booster on a single membrane it worked rather well as far as permeate:brine with my low pressure. I could also hear it loudly knocking then. My new system has a waste water recovery membrane and I knew my 36 psI couldnt support that so I added an aquatech 8800 and looped in the old ERP1000. Run times on the pressure pump are pretty much the same with or without the ERP. Ill get some TDS readings before the dI over the next week or so with it back off then reinstall it clock those. Then again without an auto shut off
If anyone else has tried this I'd love to know what you've found.
Dislcaimer Needed I guess I sould also mention that I did call Bulk Reef Supply and told them what I planned to do with their water saver package and they said that tanked systems are not generally recommended with a second membrane because of pressure issues and I told them I was going to boost just could not get that from them because they were currently out of stock. They then told me that they weren't familiar with running a permeate pump without an auto shut off but gave me clear instructions over the phone on how to set up a permeate pump in the system I was ordering. What I am trying to do is maximise efficiency but still retain a pressure tank so that we can drink the water as well as let the fish get theirs. If anyone is interested Ill update my findings and include pics of the configuration of each setup. My gear is near the ceiling though so pics won't be the best angles
Day two without the permeate pump and both readings both days shows an improvement. Running both pumps with an auto shutoff valve for 3 days I had TDS readings coming into the DI stage at 9 ppm. I have had the same readings each time for the last couple days without the permeate pump at 5ppm. So far it seams that while permeate pumps are a benifit alone they only hinder a booster pump.
This will be the last post on this thread if it isn't of any interest to anyone. Todays results were from a mixing tank fill. Under normal operation all of the ro water comes from the tank with the exception being a mixing barrel fill that uses all of the tank 3.5 gallons and another 16 gallons the RO has to make on demand no back pressure. I have my mixing station ro input on a y with valves on ro and dI sides to control resin use. Today I started filling a 5 gallon top off jug and received a phone call from another fish keeper. I paid no attention to the jug because normally it would fill fast for a few gallons then take an eternity to finish off. Well within a 20 minute phone call I not only filled but flooded my utility room floor 2 towels deep. The pressure pump is that much faster and the reading are the same while filling and with an empty tank 4ppm as long as I remember to flush the membrane first.