Azuwater and Azuvoda

Light liquid separator STORM S

Description

STORM S is a light liquid separator (e.g. petrol, diesel) used to treat run-off water and to reduce pollutant concentration in the effluent.
Water coming from paved surfaces, warehouses, parking place, garages, car washes and gas stations usually contains lubricants, mineral oils, light liquids as fuels that must be removed before the drainage into public sewer, receiving waterbody or onto ground.

Separator for Light Liquids STORM S rainwater runoff treatment. Section

STORM S – Section

The plant is equipped with a settling zone for sand (appointed as sand sludge trap) and a light liquid separation area with coalescence filter. A safety filter and an automatic shutter protect the outlet pipe.

Separator for Light Liquids STORM S rainwater runoff treatment. Plan.

STORM S – Plan

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Features

The stormwater treatment plant STORM S is a light liquids separator for rain water coming from paved surfaces as parking lots, mechanical workshops, gas stations, warehouses etc. which can contain light liquids such as mineral oils, hydrocarbons, fuel (petrol or diesel).
Plant is made by a prefabricated concrete tank.
Nominal size (NS) is the main dimensional parameter according to European standard EN 858-1 and EN 858-2.
It corresponds to the maximum flow rate in standard conditions (defined by the regulations).
Plant is divided in several areas.
The first area is the sludge trap able to allow the sedimentation of sand and soil, in order to prevent the filter clogging.
The second area is the separation zone: water passes through a coalescing filter pack that improves efficiency.
The plastic lamellar pack is a specific product for light liquids separation, installed in order to ensure the passage of oil drops, mixed in wastewater, in flow direction necessary to prevent the ascent of the droplets non correctly joined together that can cause disorders on phenomenon of coalescence.
The bottom of the separation zone has a slope designed to collect the residual sands.
The last area is the outlet and the oil collection zone.
Light liquids are stored on the water surface: the volume is designed according en EN 858-1.
To guarantee the effluent quality, the system is equipped with an emergency protection filter in plastic to avoid oil dragging with the outgoing water.
The automatic shutter close the outlet pipe when the oil storage volume is full. The emergency closure is automatic with a floater heavier than oil.
The separator needs a by-pass system working for the flow rates that exceed the maximum and for emergency and for emergency closures (available on request).
The system treats only run-off water, domestic wastewater are not admitted (neither black nor grey water).

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Technical Specifications

The light liquids separator STORM S is a mono-bloc (single unit) reinforced concrete tank for underground and aboveground (available on request) installation.
Available for vehicle access (light or heavy), with concrete, stainless steel or cast iron manhole cover (available on request).
Three category available: B125, C250 or D400.
STORM S line is available from NS 2 up to 120; the oil and light liquids storage volume range from 52 up to 2,800 litres.

Gross dimension are shown in table as follow.

NS DN B L H H1 H2 Qmax Wt Woil
Name [-] [mm] [cm] [cm] [cm] [cm] [cm] [l/s] [l] [l]
Storm S 2 2 100 105 150 140 110 105 2.1 122.9 52.2
Storm S 3 3 100 130 160 140 110 105 3.0 167.6 68.6
Storm S 4 4 125 150 200 150 118 113 4.1 297.5 138.7
Storm S 5 5 125 150 200 200 168 163 5.1 317.6 144.6
Storm S 8 8 160 210 250 150 114 109 8.1 495.9 306.4
Storm S 10 10 200 210 250 200 160 155 10.1 855.0 380.4
Storm S 15 15 200 210 250 265 225 220 15.4 1248.3 375.1
Storm S 20 20 200 250 320 200 160 155 21.0 1573.2 584.1
Storm S 25 25 250 250 320 250 205 200 25.6 1928.9 710.2
Storm S 30 30 250 250 420 220 175 170 30.1 2325.6 1013.5
Storm S 35 35 315 250 420 250 199 194 35.4 1833.1 1198.8
Storm S 45 45 315 250 420 270 219 214 45.7 2462.4 1128.6
Storm S 50 50 315 250 520 250 199 194 50.7 2681.3 1509.8
Storm S 60 60 315 250 520 270 219 214 60.0 3857.8 1469.7
Storm S 70 70 315 250 520 300 249 244 70.1 3816.7 1459.7
Storm S 80 80 315 250 650 270 219 214 83.7 5437.8 1855.9
Storm S 90 90 315 250 650 290 239 234 90.2 5519.9 1876.0
Storm S 100 100 315 250 820 270 219 214 100.0 5458.3 2528.1
Storm S 120 120 400 250 820 290 230 225 122.1 6586.9 2892.0

NOTE: sizes can be changed without notice.
The letters in figures and table have the meanings set out below:

NS – nominal size according to EN 858-1 and EN 858-2
DN – inlet and outlet pipes nominal diameter
B – total gross width
L – total gross length
H – total gross height (excluding cover)
H1 – inlet pipe height
H2 – outlet pipe height
Qmax – maximum flow
Wt – sludge trap volume according to EN 858-1 and EN 858-2
Woil – oil storage volume according to EN 858-1 and EN 858-2
For further information and tailor made solutions, please contact technical office.
DIAGRAM DRAWING

02-04-02_01_STORM-S-04_eng_00

02-04-02_01_STORM-S-05_eng_00

02-04-02_01_STORM-S-06_eng_00

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Diagram Drawing

 

Separator for Light Liquids STORM S mineral oil removal equipped with sludge trap and coalescence filter. Technical plan.

STORM S – Technical plan

Separator for Light Liquids STORM S mineral oil removal equipped with sludge trap and coalescence filter. Technical section.

STORM S – Technical section

Separator for Light Liquids STORM S mineral oil removal equipped with sludge trap and coalescence filter. Technical section.

STORM S – Technical section

 

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Guarantees

The light liquids separator STORM S is designed according to European standards.
Suitable for public sewer request quality standard or water body for domestic wastewater according to local regulation.
AZU Water can offer tailor made solution according to inflow and effluent characteristic.
Contact technical office for further information (contact).

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