glycol disposal

hot_rod

PG propylene glycol is considered non toxic and safe to dump in the drain.

If it is EG ethylene glycol,better not dump it in a drain.

If you are not sure better not dump it in a drain.

Many cities have recycling center thay take antifreeze. Most Jiffy Lube or similar quick change places will take it, perhaps a small charge. Call first and tell them how much you have.

Same with automotive dealerships, they all recycle antifreeze.

Safety Kleen will pick up and dispose also if you have large quantities, generally barrels of it. they are a bit expensive, however.

hot rod

Heatman_2

glycol disposal

I need to drain a snowmelt system that was set up with a cold water fill instead of glycol feeder. This system also has a leak from a concrete nail used to anchor a "Grand Opening" sign. I am willing to bet that the original glycol mix is no longer valid with the makeup water being added. Is this system water a waste or can it be recovered and remixed properly for freeze protection? What is the proper disposal of old glycol?

Rich L.

Before disposal

Before talking disposal why not check it with a refractometer and see where your protection level is at. You just need a drop for an accurate check. If you don't have one your local parts house may have one to lend or rent out. (Try Plumb Supply in Des Moines) In your area there may be a few boiler/ cooling tower water treatment guys that have them also.

If you didn't do the install see if you can find out who did and they should be able to tell you what type it is.

Once you know what you have and the level of freeze proctection you can remove part of the solution and make your mix stronger with fresh glycol added straight. Run your circ pump to get a good mix and re-test with the refractometer to double check your temp protection.

If it's not frozen after this past week in Iowa it may not be too far off!

Good Luck, Rich L