ro/di filter producing way way to much waste water

[Reeling Reefer]

I have a brand new ro/di 4 stage klean water 100gpd system and its producing an insane amount of waste water. the good water is 80 gallons a day coming out at 0 tds seems fine but the waste water is flowing way to fast wasting a gallon a minute . my pressure is low 30 psi but what could be causing this? I was told get a booster pump an additional membrane to help this? is the restrictor not working on the waste side? why is it coming out so fast? is the good water which is 0 tds good to use ? the tap water tests at 25 tds . what should i do setting up a new 29 gallon tank made 25 gallons so far

 

[Timfish]

Low input water pressure will result in high waste flow and a booster pump should correct it. Keep in mind "waste" water is still cleaner than the source water. Some people will run the waste out to their yard or garden.

 

[wrott]

Measure waste to product, should be 3:1.
Use the 25g, it's good, did you dump the first couple of gallons that has some glycerol from a new membrane.

 

[Reeling Reefer]

Yes I did dump first 2 gallons . Would I need a second membrane and a booster or just a booster pump ? My ratio is like 20 to 1. Wasting a gallon a minute. Not ideal looking to fix This. It’s only 29 gallon tank so after it’s filled up won’t need a ton after just top off and water changes not waste adds up quick

 

[Vinny Kreyling]

Just a booster pump should do it otherwise it's a flow restrictor problem.

 

[Brieninsac]

Low pressure and cold water will reduce the water flow through the membrane. Try warming your water to 76 degrees and see how it goes.

 

[lionfish300]

Low pressure and cold water will reduce the water flow through the membrane. Try warming your water to 76 degrees and see how it goes.

How do you warm water?

 

[Vinny Kreyling]

When its warm how does he pump it through the unit?

 

[wrott]

You can coil a few feet of tubing in a 5G bucket with a heater or just room temp.
Make sure the flow restrictor is correct for the membrane, you could probably go a size smaller to increase product water.
With tap water that is 25ppm TDS, you really just need to dechlorinate depending on livestock.

 

[garygonzales]

there is also a thread on this as well in the filtration forum

 

[Brieninsac]

You mix in a little hot water.