Leaving peroxide solution in lines?

[ADK_XJ]

Hey all,

Finally got out in the woods yesterday to clean everything up for the year, I ran a hydrogen peroxide solution (35% peroxide at 16 oz into 35 gallons of water) up through the lines from the bottom using the diaphragm pump from my RO system. It worked great.

Question now: everything is plugged up and the solution is sitting in the lines and drops all the way to the top, should I just leave this in place until next season or drain the whole thing and blow it dry with a compressor or something? My understanding is the peroxide breaks down to H20 eventually.

Also, is this sufficient cleaning for small-ish (500' max) runs of 3/16 or should I be using the calcium hypochlorite method?

[DRoseum]

I leave the peroxide in for about 1 week and then suck it out using the diaphragm pump while lines are still up. Pull top tap out of tee cup and let it suck it all down for a while and then recap and move down to next drop and repeat down entire line.

Don't blow air thru line...can introduce oil from compressor and dirt / bacteria.

Don't leave lines full of peroxide. Yes it breaks down into water (and oxygen) but the oxygen actually can accelerate the embrittlement of plastics...especially your fittings. I had this happen to all my leader end of line hooks last year. Didn't seem to affect the CDL fittings.

https://youtu.be/FUrzZQOcyb4

[ADK_XJ]

I leave the peroxide in for about 1 week and then suck it out using the diaphragm pump while lines are still up. Pull top tap out of tee cup and let it suck it all down for a while and then recap and move down to next drop and repeat down entire line.

Don't blow air thru line...can introduce oil from compressor and dirt / bacteria.

Don't leave lines full of peroxide. Yes it breaks down into water (and oxygen) but the oxygen actually can accelerate the embrittlement of plastics...especially your fittings. I had this happen to all my leader end of line hooks last year. Didn't seem to affect the CDL fittings.

https://youtu.be/FUrzZQOcyb4

Ok, cool - so that is essentially the opposite process I followed when "charging" the lines - I worked my way up from the bottom to the top putting the taps into the caps. Would you run some permeate back through the system, too, or don't need to if it's been purged off the peroxide?

[DRoseum]

Yes - I charged mine from bottom working up as well and then drain from top down under vacuum. Video link walks thru that. I do not flush with permeate as I don't want to inadvertently reintroduce any microbes/bacteria. Pulling them nearly dry is sufficient.

[fred]

peroxide will dry rot your fittings very quickly. it works ok to clean but it is not good to leave in the lines

[DrTimPerkins]

peroxide will dry rot your fittings very quickly. it works ok to clean but it is not good to leave in the lines

Agreed. It was also the LEAST effective and lowest economic return of the chemical sanitizers we tested.