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Design Parameters | Construction Criteria | Maintenance Requirements |
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| All PSI models are gravity enhanced separation
vessels which are based on Stoke’s Law and American Petroleum Institute (API)
oil-water separation standards. Flow rates range from 1 to 5000 gpm with larger flow rates available by installing multiple units in parallel. PSI oil-water separators utilize multiple corrugated parallel plates, which have a proven track record for coalescing oil particles. Separator Models PS and PSR will produce a free oil and grease effluent quality of 15 ppm or less. In addition, PSI can include our polypropylene coalescer. The coalescer is made up of a special matrix of polypropylene fibers designed to remove oil droplets down to 20 microns in size. Separator models PSC and PSRC equipped with the coalescer can produce a free oil and grease effluent quality of 10 ppm or less. Click here for more details on how PSI Separators work. |
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| PS
International cylindrical oil-water separators are designed in accordance with UL-58,
UL-142 and UL-1746 construction standards. Steel single wall, double wall, and UL listed fiberglass jacketed secondary containment construction designs are available. For buried installations, PSI can provide UL-1746 listed fiberglass or STI-P3 corrosion protection systems. Both systems include a 30 year warranty against external corrosion failure- guaranteeing a long lasting high quality product. The PSI rectangular separators can be utilized for above grade applications or below ground installations in a concrete vault. Click here for more details on how PSI Separators work. |
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| At PSI,
we know that providing a separator effluent quality that will meet your discharge
requirements is only part of the solution for your wastewater treatment needs. You, the
customer, also want a system that is going to be easy to maintain and service. This is why
the PSI separator includes corrugated plates inclined upwards at a 45º angle to prevent
sludge build-up. The sludge baffle in the separator is located below the round manway for
easy and direct access from grade for removing sludge accumulation without entering the
vessel. The polypropylene coalescer is also easy to maintain since it is located as far away from the corrugated plate pack as possible. The location of this coalescer ensures that it has limited oil and solids loading- unlike some of our competitor’s designs. The polypropylene coalescer has a design life of over 10 years. It is "self-unloading" of oil and only needs periodic cleaning to remove suspended solids. PSI provides a large coalescer access manway equipped with steel channels which allow the Pack to slide in and out of the vessel. This design reduces the time required to maintain the coalescer and ensures one person can easily remove and reinstall the coalescer from grade with the Pack lifting rod. You should know: An OSHA approved confined space entry procedure is required for entrance into an oil-water separator. Some separator companies use a small manway for access to their polypropylene coalescers- requiring coalescer removal in pieces. Reinstallation of some multi-piece coalescers may require entrance into the vessel. The PSI Separator does not require entrance into the vessel for removal of sludge or for cleaning the polypropylene coalescer. Click here for more details on how PSI Separators work. |
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