IFM was approached by a very large banking data center to reduce the volume hauled from the disposal of 30% Ethylene Glycol from a 10,000 gallon chiller loop, by way of membrane filtration.
Due to the high costs of hauling and charges of glycol disposal, IFM used membrane filtration to help the data center with waste minimization. Utilizing nano-filtration and reverse osmosis, IFM was able to clean the glycol using the IFM’s rental equipment and concentrate the glycol solution.
The age of the data centers’ system played a part in the equipment needed to properly filter the glycol. NF270-4040 Filmtec Membranes were used in stage 1, to reject the accumulations of hardness, organics and dyes in the loop; thus creating clean ethylene glycol. Following the nano-filtration, the permeate was essentially concentrated by reverse osmosis using BW30-4040 membranes. Concentrate from both stage 1 filtration and reverse osmosis were sent to a tanker for disposal.
IFM along with waste hauling was able to reduce the glycol in the chiller loop from 30% down to 2% at the end of this weeklong project.