Naftos Skirtuvai

The oil separators manufactured by UAB “Buiteka LT” are classified as Category I oil separators, where the maximum allowable amount of oil products in treated wastewater is 5 mg/l.

Oil separators are made from fiberglass, which has excellent working characteristics that meet all the requirements for this material. This ensures its durability as well as safe and easy installation of the equipment.

Oil separators are designed for the separation of light oil products from stormwater. Oil can be separated from water by gravity and/or with the help of coalescing plates. Oil separators can be used for primary wastewater treatment before discharging stormwater into the stormwater drainage system or for final wastewater treatment before releasing it into water bodies. Oil separators can be used for the treatment of stormwater:

• from fuel stations,
• streets,
• from auto repair shops,
• parking lots,
• garage complexes,
• industrial facilities,
• scrap metal yards,
• warehouse and terminal areas, as well as other facilities.

Oil separators cannot be used for the treatment of household wastewater.

An automatic alarm with a sensor can be installed in the oil separator for an additional fee. The sensor signals the amount of oil accumulated in the separator. Once a certain level of oil products is reached, the sensor alerts with an audible signal that it is time to remove the accumulated oil products.

Operating principle

Naftos skirtuvą sudaro cilindrinis vertikalus arba horizontalus korpusas (smėliagaudė, pirmoji ir antroji kamera), koalescensinis filtras ir nuotekų lygio daviklis.

To ensure the required degree of wastewater treatment from oil products (less than 5 mg/l at the outlet), a properly sized sand trap is installed before each oil separator, where the sedimentation of mineral suspensions (sand, gravel, sludge, etc.) occurs. Wastewater from the sand trap enters the first chamber of the oil separator through the inlet pipe and the incoming flow distribution device, where flotation and coalescence phenomena take place. Larger oil product particles float (due to buoyancy) to the top. Smaller particles settle on the surface of the coalescing filter (adsorption phenomenon), where they join with others (coalescence) until they begin to float, forming a layer of oil products on the surface.

If the wastewater needs to be treated to an oil product level of 1 mg/l, the wastewater flow then travels to the second chamber of the oil separator. Here, the wastewater is additionally treated for oil products using a sorbent Fibroil filter.
The treated wastewater is directed through the outlet pipe from the separator into the household sewage system for additional treatment.

Maintenance

Technical service hatches are installed above the sand trap and separators, allowing the inlet pipe of the sand trap and separator to be buried to the required depth from the designed ground level. If there is no alarm or level sensor in the oil separator, it is necessary to regularly check the accumulated oil product layer every two weeks. Oil products must be removed from the separator if the thickness of the layer exceeds 1 cm. The removal of oil products is performed through the service hatch using a vacuum truck.

If there is a wastewater level sensor in the oil separator, the oil products are pumped out when the alarm is activated.

Operating principle

Maintenance

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