裝式污泥及廢油分隔系統

GN 系列

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 TECHNICAL DESCRIPTION

The sludge and light mineral oil separator mod. GN is a static system that provides for their separation by using the hydrocarbons specific weight compared to water, before their discharging into the drainage, the surface water or the subsoil.

It has a lamellar pack and a coalescence filter. A power pack with an optional and acoustic alarm indicates eventual emergency situations in the activation phase of the over accumulation automatic closure system.

The manufactured article is made of plastic reinforced by incorporated fibreglass (PRFV = polyester resin reinforced by fibreglass), with inspection openings (n° 2 up to the mod. GN 50 and n° 3 in the following models) and hydraulic connections of PVC.

It is perfectly waterthightness and resistant to the corrosive agents. it has a considerable mechanical resistance due to the plastic reinforced by incorporated fibreglass characteristics.

It is waste water chemical components proof and it can be filled in without being damaged because of the ground and the external overload pressure.

 TECHNICAL INFORMATION

model

GN 3 5 6 10 15 20 30 40 50 65 80

capacity

l/sec 3 5 6 10 15 20 30 40 50 65 80

outside diameter (D)

m 1.2 1.6 1.6 1.6 1.6 2 2 2 2 2 2

total length (L)

m 3 2.5 2.7 3 3.5 3.5 4 4.5 5 6 7

oil / hydrocarbons density

g/l 950 950 950 950 950 950 950 950 950 950 950

total volume

m3 3.4 5 5 6 7 11 12.6 14.1 15.7 18.8 22

sludge separator volume

m3 1.5 2 2 3 3 5 5 5 5 5 6

light liquid storage capacity

m3 0.5 0.7 0.7 0.8 0.9 1.5 1.7 1.9 2.1 2.5 2.9

 APPLICATIONS

 PRACTICAL DESCRIPTION

The sludge and light mineral oil separator is a static system that provides for their separation by using the different specific weight of the hydrocarbons compared to water, before their discharging into the drainage, the water surface or the subsoil.

The treatment provides for a sludge settling phase and its following extraction of oil, as the hydrocarbons presence is the only source of a systematic pollution.

Oil separation degree compared to water depends on the liquid to separate density and on the respective particles diameter, with the application of the low of Stokes to obtain the flowing back speed of the same particles.

The water that comes from the Service Areas forecourt used as car, road train and bus parking, and as fuel storage, flows into the sludge separator where the flow is slowed down through a bulkhead aiding in this way the sediment on the sand and sludge bottom.

The water passes into the oil separator where the flow distributes in an uniform way and the light liquid with a bigger dimension (oil and similar), because of the different specific weight, goes up the surface producing a floating layer with a growing thickness. A safety device, through an over accumulation automatic closure system, doesn't allow the liquid to flow.

The smaller suspended particles of the light liquid are kept from the lamellar pack and then from the coalescence filter. They aggregate just for the phenomenon of coalescence producing an oil pellicle that part reaching a some thickness and going up the surface for the low of gravity.

Finally, inside the separator a survey system is installed that, through an external power pack with an optical and acoustic alarm, indicates the need of removal.

 INSTALLATION SCHEME

To install the SLUDGE AND LIGHT MINERAL OIL SEPARATOR mod. GN it is necessary to provide for a gravel drainage on the excavation bottom, so for a sand sediment bed with a thickness of about 20 cm (15 ~ 30 cm).

Moreover, it is necessary to arrange the polyester resin reinforced by fibreglass manufactured article, to fill it with water and than to fill it in with sand or other suitable dry material.

-   Arranging the sampling tank, after the exit, for the sample withdrawal.

To assure that the manufactured article is easy to transport it is necessary, during the structural phase, to provide for some opportune structural reinforcements. Whereas, to install it the following procedures have to be assured :

  • Excavation in condition of tight trench (the excavation total width has to be twice smaller than the diameter)

  • Manufactured article anchorage through the apposite hooks (in case of slope)

  • Accurate tamping of the buttress dry material

  • 1.00 m manufactured article minimum covering and not higher than 2.00 m

  • Additional storeys installation on the manhole up to the roadway and cast iron manhole cover housing (the separator manhole are two in the models up to GN 50 and three in the models GN 65 and GN 80)

  • Adequate paving package carrying out.