Oil and oil derivatives separators

Separators with coalescent filters

Oil and oil derivatives separators - GHIBLIPLASTSeparators are used wherever wastewater contains a large amount of dissolved mineral liquids (petroleum and derivatives). It is mostly surface water. Separators are used for the treatment of wastewater from rainwater for all surfaces exposed to precipitation and with a larger amount of sediment - roads, squares, parks, gas stations, car services, garages, industrial plants.

The separators are manufactured according to the European standard EN858 with a precipitator and a variable coalescent filter cartridge. The quality of treated water is less than 5mg/l.

Our separators are accompanied by a complete technical documentation with all necessary certificates (compliance with SRPS EN-858-1 and SRPS EN-858-2, material certificate, welder certificate). They are made of high density polyethylene (HDPE), using spiral winding. They consist of a part for deposition and a part with a coalescent filter. The precipitator is equipped with elements for directing the flow and preventing the vortex of water.

In this way, the deposition of solids is intensified and enables high quality uninterrupted separation of oil and oil derivatives in the next phase of processing. The coalescent filter package enables a high degree of separation of petroleum products and ensures that the purified liquid has a maximum of 5 mg/l of non-emulsified oils and fats.

Separators with a bypass

Oil and oil derivatives separators - GHIBLIPLASTAre used for the treatment of atmospheric water from large areas (roads, parking lots, squares) where occasional occurrences of large amounts of water are possible. This ensures that the first wave of dirty water is introduced into the separator, and the remaining amount of precipitation from the surface is transferred via a bypass. In this way, the optimization of the device capacity is achieved and the total investment is significantly reduced.


After installing the treatment plant, it is necessary to fill it to the level of the outlet and check the water flow. Depending on the amount of use, quantity and degree of contamination of the incoming water, it is necessary to ensure the removal of precipitated solids from the sedimentation tank and separated oil in a certain time interval in order to ensure its disposal in accordance with regulations of hazardous waste disposal.


Oil and oil derivatives separators - GHIBLIPLASTInstallation is quick and easy. There is no need for additional costs for concrete works, foundation construction, etc. Oil separators are installed in an excavated trench larger than the separator itself. They are placed on a compacted bed of sand or gravel 300mm tall, and then evenly covered with sand or gravel along the perimeter. Compaction is done manually or mechanically, and it is necessary to perform it so as not to damage the bottom or the shell. The backfill material can be used up to 200mm above the top of the separator, and the excavated material can be used for the remaining required amount. It is necessary that the compaction of sand around the device is 95% per Proctor.

If the separator is placed under the road that is intended for heavy freight traffic, it is necessary to install an additional reinforced concrete (relief) slab. A more detailed explanation of the backfilling and installation procedure is prescribed by standard EN1610. In case of installation of separators in places with groundwater, pay attention to the appearance of buoyancy force.

Method of installation on terrain with high groundwater

It is achieved by anchoring the separator for the concrete reinforced slab. In case of presence of groundwater at the location of the intended installation, build a concrete base on the sand bed. The dimensions of the concrete slab are determined by the thrust force. The number of anchoring points, the dimensions of the anchors and the strength of the binding straps are dimensioned from the stability conditions.

Oil and oil derivatives separators - GHIBLIPLAST
  • Easy to handle, install and maintain, due to its low weight
  • Not affected by high and low temperatures
  • High static load capacity (possibility of installation in traffic areas)
  • No corrosion
  • Great price
  • No groundwater impact
  • Long service life, over 50 years
  • Resistant to wear and chemical impact of a large number of substances (consult the manufacturer)
The size and efficiency of oil separators depends on many factors:
  • amount of wastewater inflow per second [l/s]
  • from drainage area [m2]
  • of the type of impurities
  • from the concentration of insoluble impurities (sand, sludge)
  • of the detergent used

The size of the separator is determined by the inflow of water in l/s that the separator can process. The separator is designed so that it can overcome five times the inflow during heavy rainfall. If the amount of water inflow is not known, it is possible to use the surface from which water is washed away in m2 as a basic orientation.

Separator size and properties
Separator type Flow l/s Volume m3 Size (R x L) mm Connecting pipes (inlet and outlet) mm
GSH-2 2 1 1000x1200 Ø125
GSH-5 5 2 1000x2500 Ø125
GSH-10 10 3 1200x2600 Ø160
GSH-15 15 5 1200x4500 Ø200
GSH-20 20 8 1600x4000 Ø200
GSH-30 30 12 1600x6000 Ø250
GSH-50 50 15 1600x7500 Ø300
GSH-80 80 20 2400x5000 Ø300
GSH-100 100 30 2400x6800 Ø400
GSH-150 150 36 2400x8000 Ø500
GSH-200 200 40 2400x8800 Ø600
GSH-250 250 50 2400x11100 Ø600
Type Flow l/s Area
GSH-5 2 - 5 l/s 50-300m2
GSH-10 2 - 10 l/s 300-1000m2
GSH-20 5 - 20 l/s 600-2000m2
GSH-50 10 - 50 l/s 1300-5000m2
GSH-100 20 - 100 l/s 4500-10000m2
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