We have isolated bacteria for ...

We have isolated bacteria for the destruction of glycols, and package a blend of species for this application.   These bacteria also occur naturally, but they change rapidly.  So if this is an ongoing the purchase of cultures would speed up the digestion.  Also below 20% glycol reacts best.  The breakdown also requires a pH of 7 to 7.9 with about a 7.6 ph the best.  We have put air injections into the system, and handle aeration equipment specific for ponds. Do you have electric power at the site?  If not there are some alternates, but a power supply is best.   The aerobic process requires air, and a small amount of phosphate and nitrogen.  The analysis of the water should provide a understanding of the food available.  Ethylene Glycol breaks down faster than propylene glycol under the same conditions.   If this is a small pond you could get aeration equipment and throwable bags of bacteria cultures that would reproduce themselves.  For a larger application we have set up ponds for receiving plane deicing glycols with bacteria growth chambers with food.  That way we grow our own on site.  It all depends on the amount of glycols you need to destroy.   What is the industry discharging the glycols?