Pentair Filtration Solutions, LLC

High performance separation system for sour water - Water and Wastewater

Hydrocarbons in the sour water system are typically present on a continuous basis at up to 10,000 ppm and during upsets to levels greater than 50,000 ppm. As little as 5,000 ppm Cat Naphtha lost to the sour water system from an FCC main fractionator overhead accumulator operating at 100 gpm water represents 262,800 gallons of potential product gasoline lost per year, with a recoverable product value greater than $500,000.

Most sour water systems experience either periodic or continuous hydrocarbon upsets, leading to stripper foaming, diminished capacity, fouling of heat transfer surfaces, and in extreme cases shut down and environmental emissions due to inability to process accumulated sour water.

Adding sour water residence tank capacity to address hydrocarbon carryover to the sour water stripper may require a capital expenditure of several million dollars or more. HRT provides superior hydrocarbon recovery, increased flexibility and a smaller footprint while reducing required capital by over two-thirds. HRT combines both superior performance and superior economic returns.


HRT technology provides petroleum producers, refiners and gas processors dramatically improved solids control and hydrocarbon recovery from process water streams relative to that achievable through implementation of conventional residence tanks or separators.

Residence tanks are ineffective at separating emulsified hydrocarbon from aqueous streams, allowing essentially all dispersed hydrocarbon to pass through. Likewise, conventional methods such as walnut shell filters or induced gas / dissolved air flotation (IGF or DAF) are limited to applications with less than 200-300 ppm oil and under the best of circumstances are typically 90% - 95% effective.

By contrast, the HRT technology was developed to remove solids as fine as 1 micron to 99.98% efficiency if desired and intercept and recover even stable emulsified hydrocarbons, allowing essentially zero free hydrocarbons to pass through. Consequently, the HRT technology provides vast improvements in the treated water quality attainable in various produced or process water systems.


ProcessOR provides high performance solid-liquid separation. Solid contaminants range from sub-micron particulates as small as viruses to particles several hundred microns in size. The liquids range from aqueous to hydrocarbon systems with viscosities up to 60,000 cP. Pentair Porous Media’s sold-liquid technolgies have been applied in the oil and gas, refinery, chemical, petrochemical and power industries.

ProcessOR's standard elements are cored, however, you may upgrade to our COMPAX coreless element technology. The COMPAX coreless element flows from the outside-to-the-inside. This element is offered with an extended surface area media configuration utilizing our proprietary NexCel media. The media provides robust performance in glycol and aqueous service as well as hydrocarbon applications. The COMPAX coreless element designs currently being used by a large number of gas plants and hydrocarbon processes due to the superior operating economics and ergonomic advantages.