As the rep for Striem in Washington, Northern Idado and Alaska we receive "quick facts" memos that allow us to learn a bit more about some of the products we sell.
I found this very informing and thought I would pass it on. Learn more about Striem at striemco.com.
Some call it coalescing media. We like to call it a "polypropylene beehive" since it's important to distinguish its material of construction. Why? The short answer: chemistry.
Polypropylene is a plastic derived from hydrocarbons (a fancy term for oil). Hydrocarbons are what we're trying to separate from water. In chemistry, similar molecules are attracted to each other. Thus, polypropylene is an "oil-loving" material. If you're trying to impress an engineer, just say "polypropylene is oleophilic."
When oily wastewater enters the separator, it is forced through the coalescing media. The oil droplets latch onto the media. As more droplets coagulate on the media, they merge with one another and eventually become buoyant enough to detach from the media and rise to the surface. Larger oil droplets rise to the surface more quickly than smaller droplets. Pretty simple!
Striem recommends coalescing media in applications where oil droplets tend to emulsify into smaller droplets. This may occur in pump applications (e.g., elevator pits) and applications where surfactants are used (e.g., car washes).
For further information on Striem's Clean Sweep coalescing media, please request our Technical Bulletin by sending an email to firstname.lastname@example.org.
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