With the combined technologies of desanders, hydrocyclones and Ross Deeptech Symons Absorption Systems we can offer comprehensive packages to handle the toughest sand washing assignments.

A typical skid unit would include primary desanders dropping solids into an accumulator from where they are batch fed to the Cyclowash hydrocyclone. Oily water exits through the Cyclowash overflow whilst clean sand and water report to the underflow. If further treatment is required, the batch can be recycled until it is sufficiently clean (<1% oil on sand) for overboard discharge.

Oily wash water may be treated with de-oiling hydrocyclones and/or a Ross Deeptech Symons absorption system depending upon the final discharge requirements.

A combined Sand Hydrocyclone, De-Oiling and Absorption System was delivered to an offshore clean-up contractor to remove oil from sand and water from FPSO storage tanks to meet environmental discharge requirements.

This featured a Krebs Cyclowash which enables the sand to be washed as it is separated from the process fluid, enabling faster throughput due to less wash recycles required.