Oil Recovery System

Petrosadid: Oil Recovery System

Oils have formed an emulsion in the water stream and cannot be removed by a coalescing or any other gravity separators. One of the unique method od oil separation is a patented device name DISCOIL®. DISCOIL is the name used to identify a patented series of equipment manufactured exclusively by O.C.S. (Officine Costruzioni Speciali S.p.A.) from Italy for the separation and recovery of the insoluble floating oil on water utilizing the physical principle of the adhesion of the fluids to solid surfaces, and in particular to stainless steel.

DISCOIL was invented in the 1976 for a water treatment plant of a Steel Mill for solving the problem of pollution caused by the floating oil and later it became the ecological skimmer par excellence.

For more information please contact our
Customer Support Center:
Customer Support Center

The most frequent application of DISCOIL refers to the separation and the recovery of floating hydrocarbons on water (from the lighter oil to the heavier ones such as gasoline, solvent, gas oil, fuel, lubricant oil, crude oil etc.) but it could be used also for fatty substances in general (animal and vegetable grease etc.).

Petrosadid Company as the exclusive agent of O.C.S in Iran, with a complete engineering, procurement and inspection teams will help you to select the best model based on your application. The main application of DISCOIL are the water treatment plants of :

• Refineries

• Oil storage depots,

• Ballast tank separator,

• Pumping oil stations,

• Petrochemical plants,

• Steel Mill,

• Power Plant,

• Mechanical industries.

Petrosadid: Oil Recovery System


The principle of operation is based on the adhesion of the oil to the surfaces of the discs that are arranged perpendicularly and partly immersed in the water to be treated while they are kept rotating on their horizontal axis. Due to the adhesion principle and to the oil molecules cohesion, DISCOIL separates the oil mechanically without emulsion and attracts oil from distance with the recovery of a minimum percentage of water.

The layer of floating oil which adheres to the specially treated surfaces of the discs is separated from them at the top by rubber scraping blades.

These special scraping blades are self-adjusting and resistant to most types of hydrocarbons.

Petrosadid: Oil Recovery System


Discoil works by exploiting the physical principle by which oil adheres to metallic surfaces.

The stainless steel discs that characterize the machine are vertically positioned and partially submerged in water. They attract the hydrocarbons to be recovered during rotation.

The “scrapers” are self-centering, resistant to various types of products and able to automatically compensate for wear. It is able to operate in the extreme situations, including the ATEX Zone 0.

Fixed installation

DISCOIL machine is supported and operated on a metallic structure generally attached to the side tank walls and equipped with catwalk and service platforms to permit maintenance.

Installation with variable level water

A floating platform can be anchored by mooring cables or attached to the tank with vertically sliding guides. A vertically sliding system normally adopted in tanks can be used where, for space reasons, floats cannot be used, or in deep tanks or chambers where maintenance personnel access is discouraged.

Petrosadid: Oil Recovery System Petrosadid: Oil Recovery System

Float Discoil

FLOAT DISCOIL finds wide application as a rapid intervention unit to be placed on ships on the open sea, lakes, rivers, petroleum terminals, in ports and coastal areas to be used in case of accidental oil spills.

The machines have been tested and approved by the Italian Naval Registry (RINA) and Lloyd’s Register of Shipping.

Float Discoil is made up of a main floating body of marine aluminium which contains the array of discs and the discharge pump for the recovered product and a hydraulic generator powered by a Diesel engines connected to it by flexible pipes.

In some cases, as for example in the installation on vessels provided of its own and appropriate hydraulic system, Float Discoil can be supplied only with the control panel to be connected directly to pre-existent hydraulic system of the vessels.

The machine requires only a small hoist and the overall dimensions of the unit permit easy transport and installation even on small vessels

Petrosadid: Oil Recovery System
Petrosadid: Oil Recovery System
Petrosadid: Oil Recovery System
Petrosadid: Oil Recovery System


ECOIL is the name used to identify independent vessels for the recovery of floating oil spill in the sea.

Approved both by Lloyd’s Register of Shipping and the Italian Navy Registry, they can recover, storage and transfer to ship tanker an high quantity of petroleum products.

ECOIL can be driven from the cockpit by only one operator and they can work also at night

The recovery capacity is 80, 100 m3/h and more depending on the dimensions and the number of the installed discs (diameter 2 or 2.5 m).

ECOIL can also recover solid debris by a skeleton basket installed on the prow and it can work also without the floating barriers and it is provided with fire fighting system and other rapid reaction equipment.

Petrosadid: Oil Recovery System
Petrosadid: Oil Recovery System
Petrosadid: Oil Recovery System
Petrosadid: Oil Recovery System

How can we help you?

If you have questions, comments or feedback, please feel free to contact us. We are ready to help!