Uniclass EPIC
JR20/JV50 L731/L75624 L634 L2242 L511
CI/SfB
(56.3)
May 2009/rev Dec 2009 WM422
Intelligent stormwater solutions by Wavin
Oil Separation Systems
Product and Installation Guide
For residential, commercial, industrial and infrastructure applications
Customer Services Technical Enquiries Technical Fax Email
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Contents
Separators
Introduction 4
Introduction to the Intesio Oil Separation Systems 4
Benefits of the System 4
Applications 5
Typical Full Retention Separation System 5
Typical By-Pass Separation System 5
Product Selector 6-9
P/E Unequal Flow Regulation Chamber 6
P/E Equal Sand/Sludge Separation Chamber 7
P/E Equal Oil Separation Chamber 8
P/E Unequal Sampling Chamber 9
Typical Application 10-12
By-pass Configuration 10-11
Full Retention Configuration 12
Typical Installation Methods 13-14
Wavin operates a programme of continual product development, and therefore reserves the right to
modify or amend the specification of their products without notice. All information in this publication
is given in good faith, and believed to be correct at the time of going to press. However, no
responsibility can be accepted for any errors, omissions or incorrect assumptions. Users should
satisfy themselves that products are suitable for the purpose and application intended.
www.intesio.co.uk
Page 3
The Intesio Oil Separation Systems Introduction
Intesio for optimum stormwater management
The system consists of the following components:
Continuing urban development, a changing climate and the
consequences of intensified rainfall: all are increasingly prominent
issues on the political and environmental agenda. In combination, P/E Unequal Flow
they represent a complex need for the most intelligent, effective Regulation Chamber
solution.
Intesio is Wavins specialist approach to responsible management
of stormwater, including its efficient capture, transportation,
control, cleansing and re-use. Were ready to contribute at any
stage in a project, with one central goal: to help achieve the
optimum project outcome. Our in-depth expertise, design insight
and proven system technology is applied wherever required to
ensure each installed scheme achieves maximum efficiency of
cost and integrated function, and full compliance with the latest
regulatory criteria.
P/E Equal Sand/Sludge
Separation Chamber
(NSB151002 shown)
P/E Equal NSB Oil
Separation Chamber
Benefits of the System
Comprehensive range of separators
Tested to, and meets the requirements of, BS EN 858-1
Included within the Environment Agency List of
Recommended Suppliers
P/E Unequal Sampling
Fulfils the UK requirements for Oil Separators (PPG3) Chamber
Suitable for use within car parks, roads and industrial
areas
Prevents the washout of the separator chamber during
heavy downpours
Economical solution for stormwater treatment of large
areas
Treats up to 95% of the annual rainfall
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The Intesio Oil Separation Systems Applications
Due to the unique modular nature of the Intesio Oil Separation
System, the Oil Separation Chamber can be designed/installed in
such a way as to be fully compliant with the requirements of the
Environment Agencys PPG3 and European Standard BS EN 858-1
for both Full Retention and By-Pass separators.
Typical Full Retention Separation System P/E Equal Sand/Sludge Sludge and oil alarms linked to
The system fully treats all flows generated by rainfall rates of up to Separation Chamber remote communication unit
65mm/hr. Full retention separators are used where there is a high Surface water
run-off
risk of regular contamination / spillage. The Intesio-Oil Separation
Chamber has an automatic closure devise incorporated in to the
unit as standard, compulsory for all EA PPG3 compliant full
P/E Unequal Sampling
retention separators. Chamber
Contaminates enter the Oil Separation Chamber, the contaminates
Clay or plastic pipe
are retained for a period which ensures that the oil which is lighter
then water separates and rises to the surface of the separator and
thus is retained within the Coalescing Filter Plates. See page 12
P/E Equal Oil Separation Chamber
for typical system layout.
Typical Full Retention separation system
Typical By-Pass Separation System P/E Unequal Flow
Regulation Chamber
The system fully treats flows generated by rainfall rates of up to
Surface Sludge and oil alarms linked to
6.5mm/hr. These types of separators are used when it is remote communication unit
water
considered an acceptable risk not to provide full treatment for run-off Clay or plastic pipe
high flows, for example where the risk of spillage is small such as
P/E Unequal
short stay car parks. Sampling Chamber
The system is designed to treat all of the first flush flow up to the
designed discharge rate. Any discharge in-excess of the design
rate is allowed to by-pass the separation chambers, thus keeping
contaminates, contained within the chambers. See Page 10 for P/E Equal Sand/Sludge
typical system layout. Separation Chamber
P/E Equal Oil Separation Chamber
Typical By-Pass separation system
www.intesio.co.uk
Page 5
The Intesio Oil Separation System Product Selector
P/E Unequal Flow Regulation Chamber
During a heavy downpour, the Intesio Unequal Flow Regulation
Chamber adjusts and restricts the incoming flow to the Oil
Separation Chamber. The Flow Regulation Chamber contains a
mechanical flow regulator, which provides an even design flow to
the Oil Separator. Excess flow is directed away from the Oil
Separator, via a bypass pipe to the discharge point as appropriate,
avoiding the Oil Separator. This design prevents any washout of
the oils and sands which are contained within the Oil Separator.
The Flow Regulation Chamber is designed to process
approximately 95% of the annual run-off.
Pivot
Float
Typical P/E Unequal Flow Regulation Chamber
Bypass pipe
Unrestricted flow is directed
through sand/sludge/oil
separators
During low flow conditions the discharge is directed through the separator.
Float
Pivot
Bypass pipe
Reduced flow is
directed through
sand/sludge/oil
separators
During peak flow conditions the minimum flow, equal to low flow conditions Detail of Flow Regulation Chamber
is directed through the separator. Excess flow is directed to the discharge
point via the bypass pipe.
Table 1 P/E Unequal Flow Regulation Chamber Properties
Part no. Overall Overall Low Peak Inlet Outlet Outlet to
diameter height flow flow (mm) (mm) separator
(mm) (mm) (lit/sec) (lit/sec) (mm)
NSB31001 1300 1630 (min) - 3230 (max) 3 9 160 160 110
NSB61001 1300 1630 (min) - 3230 (max) 6 18 225 225 160
NSB101001 1300 1630 (min) - 3230 (max) 10 30 225 225 160
NSB151001 1300 1630 (min) - 3230 (max) 15 45 300 300 225
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The Intesio Oil Separation System Product Selector
P/E Equal Sand/Sludge Separation Chamber
The function of the Intesio Equal Sand/Sludge Chamber is to
separate the sand and sludge contaminates from the surface
water discharge. This process contributes to the smooth
operation of the oil separator and subsequently can contribute to
lower maintenance costs. A sand/sludge chamber should precede
the oil separator. The discharge to be treated flows into the
sand/sludge chamber, allowing the solids to settle by means of
gravitation; the solid particles which are heavier than water settle
on the bottom of the separator. The solid-free rainwater then flows
from the unit into the oil separator. BS EN 858-1 states that a
sand /sludge trap should always be part of the oil separation
system.
For sizing/capacity of chamber see BS EN 858-2.
The Intesio Sand/Sludge Chamber, comes complete with a
SandSET 1000 Sludge Alarm. The sludge alarm indicates when
the unit is full and must be emptied. The timely emptying and
routine maintenance of the chamber will ensure the smooth
operation of the Sand/Sludge Chamber.
Typical P/E Equal Sand/Sludge Chamber
Typical Sand/Sludge Separation Chamber SandSET 1000 Sludge Alarm
Table 2 P/E Equal Sand/Sludge Separation Chamber Properties
Part no. Overall Overall Inlet Outlet Sand
diameter height (mm) (mm) storage
(mm) (mm) (lit)
NSB31002 1300 1600 (min) - 3200 (max) 110 110 600
NSB61002 1300 1600 (min) - 3200 (max) 160 160 600
NSB101002 1350 2000 (min) - 3600 (max) 160 160 1000
NSB151002 1750 (ball) 2180 (min) - 3780 (max) 225 225 2000
www.intesio.co.uk
Page 7
The Intesio Oil Separation System Product Selector
P/E Equal Oil Separation Chamber
Intesio Equal Oil Separation Chambers are Class 1 separators,
tested in accordance with BS EN 858-1. The chambers are
suitable for treating oily rainwater. The Intesio Oil Separation
Chambers are available in size classes NSB3, 6, 10 and 15.
The chambers cleaning process is based on the coalescent 3D
filter concept.
The Intesio Oil Separation Chambers are equipped with
coalescing plates, which separate oil from water. The process is
based on the fact that oil droplets congeal when they gather
together on the oleophilic (oil attracting) plates. As the size of the
droplets grows their upward velocity grows (Stokes Law). The oil
droplets travel along the angled plates and then travel through the
holes in the coalescing plates, always travelling to the surface.
The separated oil is stored as a homogeneous layer on the
surface of the water within the chamber.
The Intesio Oil Separator is made from strong recycled PE plastic.
The chambers are light to transport and easy to install when
compared to more traditional solutions. The spherical bottom of the
chamber allows for the complete emptying of the unit if required.
The Intesio Oil Separation Chamber comes complete with a
OilSET-1000 oil alarm. The oil alarm indicates when the coalescing
Typical P/E Oil Separation Chamber
plates should be cleaned. Routine maintenance of the unit will
ensure the smooth operation of the Oil Separator.
Detail showing the coalescent 3D filter housing OilSET 1000 Oil Alarm
Table 3 P/E Equal Oil Separation Chamber Properties
Part no. Overall Overall Flow Inlet Outlet
diameter height (lit/sec) (mm) (mm)
(mm) (mm)
NSB31003 1750 2180 (min) - 3780 (max) 3 110 110
NSB61003 1750 2180 (min) - 3780 (max) 6 160 160
NSB101003 2170 2630 (min) - 4230 (max) 10 160 160
NSB151003 2170 2630 (min) - 4230 (max) 15 225 225
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The Intesio Oil Separation System Product Selector
P/E Unequal Sampling Chamber
The Intesio Unequal Sampling Chamber is available as an optional
extra, for use in connecting the discharge from the oil separator
back into the main discharge pipework. The chambers are
designed for use within the system when the components are
designed in a by-pass configuration. The sampling shaft makes it
possible to monitor the quality of the discharge, and also contains
a shut-off valve for use in case of emergencies.
Should a sampling chamber be required for a full retention system
use either:
a) a standard Wavin Tegra 600 Non Man-Entry Inspection Chamber,
or alternatively, if a shut-off valve is required,
b) the standard Intesio Sampling Shaft and simply close off the
appropriate inlet pipe using a standard coupler/plug.
Typical P/E Unequal Sampling Chamber
Detail showing the Intesio Sampling Shaft shut-off valve handle Detail showing the Intesio Sampling Shaft shut-off valve
(supplied with the unit)
Table 4 P/E Unequal Sampling Chamber Properties
Part no. Overall Overall Inlet Outlet Inlet from
diameter height (mm) (mm) separator
(mm) (mm) (mm)
NSB31004 1160 1330 (min) - 2930 (max) 160 160 110
NSB61004* 1160 1330 (min) - 2930 (max) 225 225 160
NSB151004 1300 1730 (min) - 3330 (max) 300 300 225
* For use in both NSB6 and NSB10 oil separation systems
www.intesio.co.uk
Page 9
The Intesio Oil Separation System By-pass Configuration
Figure 1 Typical off-line bypass system (attenuation process shown) Communication unit
Vent pipe Sludge alarm Oil alarm
Ground level
P/E Unequal Flow
Regulation Chamber
Part long section AA
P/E Equal Sand/Sludge
Separation Chamber
P/E Equal Oil
Separation Chamber
Venting requirements
For petrol stations: Comply with Health and Safety Guidance Note 41 (HS(G)41)
For other applications: Comply with BS EN 752 Building Drainage
P/E Unequal Flow
Regulation Chamber
Plan
P/E Equal Sand/Sludge P/E Equal Oil
Separation Chamber Separation Chamber
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AquaCell Geotextile wrap
Box Unit over
assembly geomembrane wrap
Discharge to watercourse
P/E Unequal Sampling Control Chamber
Chamber with
Vortex flow control unit
AquaCell
Geotextile wrap over geomembrane wrap Box Unit assembly
AquaCell Box Unit Assembly
When using the bypass
arrangement for the infiltration
process, enclose the AquaCell
box unit assembly with a
geotextile wrap only
P/E Unequal Sampling
Chamber Manifold pipe
connection
Discharge to watercourse
Control Chamber
with
Vortex flow control unit
A
www.intesio.co.uk
Page 11
The Intesio Oil Separation System Full Retention Configuration
Figure 2 Plan of typical on-line full retention system (with off-line attenuation process shown)
Arrangement equally suitable for the infiltration process,
but enclose the AquaCell box unit assembly with a geotextile wrap only
AquaCell Box Unit assembly
with geotextile wrap over geomembrane wrap
Discharge
Manifold pipe to
connection watercourse
Control Chamber
P/E Equal Sand/Sludge with
Separation Chamber P/E Equal Oil Vortex flow control unit
Separation Chamber
Figure 3 Plan of typical on-line full retention system (with on-line attenuation process shown)
Discharge
to
watercourse
Control Chamber
P/E Equal Sand/Sludge with
Separation Chamber P/E Equal Oil Vortex flow control unit
Separation Chamber
AquaCell Box Unit assembly
with geotextile wrap over geomembrane wrap
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The Intesio Oil Separation System Installation Methods
Introduction Figure 4 For areas with light traffic and pedestrians
The following installation instructions outline the basic requirements
for the Intesio Oil Separation Chamber when installed in typical
installations as shown in Fig 4 and Fig 6. Full installation details,
together with details to be used when installing the chamber in
areas with high groundwater and/or in areas where the bearing
capacity of the soil is poor (see Fig 7), are available from Wavin
Technical Design Department.
Installation Procedure 8
1. Excavate the chamber pit to the required depth, ensuring that 5
the plan area is slightly greater than that of the chamber being
9
installed.
2. Depending on site and/or soil conditions, lay a 300mm
stone-free sand layer placed on the bottom of the pit
4
(see Fig 4 for light traffic/pedestrian areas and/or Fig 6 for
medium/heavy traffic areas).
3. Pour approximately 200mm of water into the separator to
stabilise it.
3
4. Surround the chamber as appropriate, with either concrete or
7
a suitable non-angular material. The type of surround
depends on the individual site conditions, so guidance should
be obtained from Wavin Technical Design Department prior to 2
work commencing.
1
If using a non-angular material as the backfill, compact the
sidefill around the chamber with care. Compaction should be
carried out in 150mm layers up to the level of the inlet/outlet.
While this work is being done, keep adding water to the
chamber to keep it steady.
5. Make the appropriate connection to the inlet and outlet of the
chamber using the appropriate pipe system and/or adaptors.
6. Remove the storage cover from the access hole of the chamber.
Install the rubber sealing ring (provided) onto the bottom edge of
the chamber shaft. Assemble the maintenance shaft in a vertical
position onto the mounting collar of the chamber. Fix the
maintenance shaft in its place with the threaded bars through Figure 5 Fixing maintenance shaft to oil separator
the lugs and tighten with nuts. See Fig 5.
7. Fix the alarm device. Alarms are supplied with the chamber
as appropriate but not installed. Detailed installation
instructions are supplied with the alarm/chamber. Maintenance shaft
Threaded bar
8. Connect the ventilation pipe to the chamber as appropriate. Fixed nut and washer
Continue compacting the granular surround in 150mm layers Maintenance shaft
fixing lug
up to ground level. Avoid the use of heavy vibration tools when
compacting the granular surround on top of the chamber.
Rubber seal
9. Cut the chamber shaft down to the correct height. Lifting screw ring Maintenance shaft
mounting collar
10. Install the appropriate cover and frame to the required loading
for the application.
Oil separator
11. Finally, fill the chamber completely with water to ensure below
effective operation of the unit.
www.intesio.co.uk
Page 13
The Intesio Oil Separation System Installation Methods
Figure 6 For areas with medium or heavy traffic Figure 7 Anchoring the separator in groundwater and/or in
areas where the bearing capacity of the soil is poor
8 8
5 5
11
9
9
4 4
1m minimum 1m minimum
3 3
7 7
2 10 2
1
1
6
Key to Details
1 Bedding (base)
2 200mm of water inside the unit
3 Backfill material
4 Chamber shaft
5 Cover and frame
6 Concrete slab
7 Oil separation chamber
8 Ventilation outlet
9 Alarm cable
10 Anchoring belts
11 Reinforced concrete slab around cover and frame
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www.intesio.co.uk
Page 15
Intelligent stormwater solutions by Wavin
Intesio working to ensure
optimum stormwater management
The combination of urban development and intensified rainfall from climate
change can create serious problems. Stormwater situations are challenges
that may be unavoidable, but they can be very effectively overcome
when the right expertise is applied.
Intesio is Wavins specialist focus for the most efficient capture,
transportation, control, cleansing and re-use of stormwater at source.
The Intesio Team has the essential experience and design insight
to help engineer the best possible solution, in its widest sense,
every time.
Our well-proven system technology is intelligently applied to
the individual needs of each location and situation. We make
thorough checks to ensure efficient performance and full
adherence to the latest statutory regulations.
By making Intesio part of your project approach, the
outcome is assured: the optimum balance of cost,
function and compliance.
Wavin operates a programme of continuous product development, and therefore reserves the right to modify or
amend the specification of their products without notice. All information in this publication is given in good faith, and
believed to be correct at the time of going to press. However, no responsibility can be accepted for any errors,
omissions or incorrect assumptions. Users should satisfy themselves that products are suitable for the purpose and
application intended.
Wavin Limited
Parsonage Way
Chippenham
Wiltshire
SN15 5PN
Tel: 01249 766600
www.intesio.co.uk WM422 May 2009/rev Dec 2009
CWD 2958
