A crucial aspect of environmental protection is keeping the water cycle free from contaminants such as oil. These substances can enter the water supply system in a variety of ways. Some of these methods constitute serious violations of environmental regulations—for instance, pouring used oil directly down a drain after an oil change. Others are less obvious; for example, trace amounts of oil are present in the condensate generated by oil-lubricated air compressors. Consequently, contaminated condensate must be prevented from entering the wastewater stream prior to disposal—specifically, through the process of oil-water separation.
Oil-Water Separators: A Necessity, Not an Option
Separating oil from water is not merely a matter of best practice; in many regions, it is a legal mandate. Numerous countries and jurisdictions have enacted strict regulations—backed by substantial fines—to ensure that oil and water are consistently separated, thereby preventing oil from entering the water cycle. However, these regulations are often inconsistent; some jurisdictions deem a certain level of oil content in water to be safe, while others regard the same level as a violation of environmental standards. Furthermore, these regulations are far more likely to become stricter than to be relaxed; consequently, businesses that currently merely meet the minimum regulatory thresholds may face significantly higher costs in the future. Therefore, it makes sound business sense to invest now in a suitable oil-water separator—such as Atlas Copco’s OSS series. These units offer an affordable, adsorption-based solution for treating condensate from small oil-injected piston or screw compressors (with a flow rate of less than 30 l/s or 60 cfm).
How Oil-Water Separation Technology Works
Here is how an oil-water separator functions: Condensate enters the separator through an inlet connection. During the pre-filtration stage, the condensate—still containing a mixture of oil and water—percolates through a polypropylene filter medium designed to absorb and trap the oil exclusively. Subsequently, during the post-filtration stage, a high-performance filter medium absorbs any residual oil. The result: the clean condensate exiting the unit contains virtually no residual oil and can be safely discharged into the sewer system. This process is highly effective; by removing oil through the filtration media, it reduces the oil concentration to below 15 ppm. This level typically falls well below the safety thresholds for wastewater disposal defined by various international and local guidelines—meaning that even if environmental regulations become more stringent in the future, you should still be able to continue utilizing your oil-water separator without issue. An Oil-Water Separation System Offers Numerous Benefits
However, the function of the OSS extends far beyond merely reliably separating oil from water and ensuring its safe disposal. More importantly, oil-water separators utilizing this technology represent an economical solution, enabling users to realize significant cost savings by eliminating the need for expensive third-party condensate collection services. Constructed from recyclable materials, the OSS is easy to install, operate, and replace. Finally, it features a compact, lightweight design that is optimized for use with small compressors. All these advantages make the OSS an ideal choice—not only for protecting the environment but also for saving you money.