Absorbent Pads, Booms Or Pillows
However, at some point a facility should consider using an oil skimmer rather than absorbent material. If only a few pads or pillows are used per month, then they are most likely sufficient. But the cost associated with the purchase, disposal and deployment of these absorbents should be compared to the cost of an oil skimmer.
The results of using absorbents are not always environmentally sound either. Only a small amount of oil can be squeezed out of the pad for recycling. The remaining oil must be disposed of in a landfill or burned. This is not compliant with green guidelines.
An oil skimmer, on the other hand, efficiently removes oil from water continuously 24/7 and puts it into a collection tank, so it can then be recycled. Also, continuous removal eliminates oil buildup, greatly reducing evaporation loss and the likelihood of oil escaping. The use of an oil skimmer is more environmentally friendly, eliminates costs associated with absorbents and extracts a salvageable product.
Another drawback to the vacuuming process is randomness. Soon after the removal service drives away, the oil begins to build up on the surface again. This buildup leads to other problems, not the least of which is the potential for bacteria growth, which can give an unpleasant odor to the water. The chance of oil escaping is also increased.
The company should examine if it makes sense economically to install an oil skimmer rather than continue to vacuum. With an oil skimmer, the oil is constantly removed and is stored in a collection tank for recycling. Instead of paying someone to remove the oil, it can now be sold. In addition, the use of the oil skimmer continuously removes the oil, leaving the surface clean, thereby eliminating the problems associated with an oil layer buildup.
Water Treatment Plants
Removing the oil continuously with an oil skimmer not only helps reduce the local surcharge, but it also assists the municipality in meeting environmental standards as it eventually discharges the treated water into local waterways.
The cost of internal treatment increases if the oil is not first removed. This can be seen in chemical and filter media costs. The use of an oil skimmer prior to this treatment not only reduces the costs and increases efficiency, but in many applications, it also gives a product with salvage value (skimmed oil).