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CPI/TPI

CPI / TPI Units

Kroftas Tilted Plate Interceptor (TPI) is used for oil-water separation in wastewater treatment and industrial applications. TPIs are designed to efficiently remove free-floating oil from water by employing a combination of gravity separation and coalescence. Krofta started manufacturing TPIs after a technical collaboration with Stetfield Separators.

The TPI operates based on the principles of gravity settling and coalescence, leveraging inclined plates within a compact unit. These plates are positioned at an angle, usually between 45 to 60 degrees, allowing for the formation of a larger surface area where oil droplets and solid particles can interact and separate from the water.

The Corrugated Plate Interceptor (CPI) performs the same function however, instead of plates, there is a corrugated plate pack inside of the main tank. TPI/CPI units can be manufactured in a completely metallic tank, with protective coatings, or in a civil tank with wetted metallic parts.

Key features and components:

Inclined Plates: The inclined plates are the central component of the TPI. They provide a surface for the oil droplets and suspended solids to adhere to and coalesce, becoming larger and easier to separate from the water.

Separation and Coalescence: As the wastewater flows through the inclined plates, the oil droplets and suspended solids collide, forming larger particles that rise to the surface.

Outlet Section: Clarified water is collected from the lower portion of the TPI and is discharged for further treatment or environmental release.

The single stage TPI is used to remove Oil globule sizes of 50 micron or higher, while the two-stage TPI is used to remove oil globules of 20 microns and above. Krofta TPI can remove up to 99% of free-floating oil from the wastewater. After this process, the wastewater is usually taken for dissolved air flotation (DAF) treatment to remove suspended solids and emulsified oil.

Main Advantages

Compact design and very small footprint
Can be constructed in a fully metallic structure or in a civil tank with metallic internal parts. There is no bar on the maximum flow a single unit can treat.
Zero maintenance machine since there is no power or chemical consumption after installation
Highly efficient in removing free floating oil

Popular Applications

Oil Refineries
Petrochemical Plants
Power Plants
Automotive Paint Shops

CPI/TPI

CPI / TPI Units

Key features and components:

Main Advantages

Popular Applications

Detail About CPI/TPI