ACO Q-Ceptor

 

ACO Q-Ceptor
Bypass and full retention oil separators
Uniclass
JR12/JR23
L731
CI/SfB
(52.7)
ACO Water Management:
Civils + Infrastructure
2
ACO Q-Ceptor
Introduction to the ACO Group
Throughout the world ACO branded
drainage and surface water management
systems are recognised for their
innovative design, high quality
manufacture, environmental excellence
and industry leading performance.
Today the ACO Group has a research and
production base that reaches across four
continents. This unmatched resource
pioneers the development of solutions
that are tailored to individual
applications, meeting the need for high
performance, sustainable products that
deliver optimum value throughout their
operational life.
ACO Technologies plc
ACO operates as ACO Technologies plc in
the United Kingdom. Founded over 25
years ago, the company has grown
quickly on a reputation for design
innovation and customer service.
There are now 6 divisions within
ACO Technologies that serve every sector
of the construction industry, providing
solutions for applications as diverse as
rail, highways, airports, landscaping,
retail, distribution centres and
environmentally sensitive projects.
To help architects, designers and
contractors meet the legal requirements
that now tightly control the way surface
water is managed, ACO has created its
unique ‘Surface Water Management
Cycle’ – Collect, Clean, Hold, Release –
the four core processes now required for
the complete and sustainable
management of surface water drainage.
The ACO group / www.aco.com
3
Contents
Introduction to ACO Q-Ceptor oil separators 4
ACO Q-Ceptor features overview 6
How to choose the correct separator 8
ACO Q-Ceptor bypass oil separators
ACO Q-Ceptor bypass oil separator - Design principles 10
ACO Q-Ceptor bypass oil separator chambers 11
ACO Q-Ceptor bypass oil separator accessories 12
ACO Q-Ceptor full retention oil separators
ACO Q-Ceptor full retention oil separator - Design principles 14
ACO Q-Ceptor full retention oil separator chambers 15
ACO Q-Ceptor full retention oil separator accessories 16
ACO Q-Ceptor alarm systems 17
Installation 18
Guide to installing the ACO Q-Ceptor 20
Maintenance and servicing 22
Model specification clause 22
4
ACO Q-Ceptor
Background
Protection of the environment is a crucial
part of an integrated approach to modern
surface water management and
sustainable drainage systems (SUDS).
Contamination of our ground water and
watercourses from hydrocarbons (petrol,
diesel and engine oil) carried by surface
water runoff poses serious threats to the
environment.
The SUDS approach requires “source
control” of surface water runoff. Oil
separators form part of this approach by
treating surface water runoff on site prior
to discharge into a watercourse or sewer
system.
They work by separating oil contamination
from water flows. Oil and silt are retained
within the separator until they can be
removed safely from the site, with the
treated water being allowed to discharge.
Where are oil separators required?
Any site where there is a risk of surface
water being contaminated by
hydrocarbons needs to have measures in
place to prevent pollution of the
environment. Oil separators are installed
on sites where there is a risk of
accidental spillages or leaks of oil from
vehicles or plant and machinery.
Under current legislation it is mandatory
throughout the UK to prevent pollution
and each site will need to consider the
most appropriate measures required.
Typical sites at risk include:
4 Car parks with 50 or more car parking
spaces or larger than 800m².
4 Smaller car parks discharging to
environmentally sensitive areas.
4 Areas where goods vehicles are
parked or manoeuvred.
4 Vehicle maintenance areas.
4 Industrial sites where oil is stored
or used.
4 Refuelling areas.
4 Any site with a risk of contamination
from petrol, diesel, or engine oil.
Introduction to ACO Q-Ceptor oil separators
Choosing the correct separator Regulatory details
In order to aid decision making as to
whether an oil separator is required, and
what type and size is appropriate, the
Pollution Prevention Guidelines (PPG3)
have been prepared and issued by the
Environment Agency for England and
Wales, the Scottish Environment Protection
Agency, and the Environment and Heritage
Service for Northern Ireland. A copy of the
PPG3 flowchart which assists this decision
is given on page 8.
The ACO Q-Ceptor range of separators is
on the Environment Agency’s list of
separators compliant with the Construction
Products Regulations 1991 and conforms
fully to the requirements of PPG3.
In addition, all ACO Q-Ceptor oil
separators have been designed
and independently tested to
BS EN 858-1:2002 and
BS EN 858-2:2003.
Any site susceptible to surface water contamination needs to provide appropriate pollution prevention measures
5
ACO Q-Ceptors are available in a range of
chamber sizes and flow rates ideal for
use in car parks, maintenance areas, and
industrial and residential applications.
Manufactured from polyethylene, the
innovative single chamber design of the
ACO Q-Ceptor is extremely compact and
robust offering significant advantages in
installation and handling costs over
traditional GRP products.
ACO Q-Ceptors are available in two
performance classes as specified by
BS EN 858-1:2002.
Class 1
Class 1 separators are designed to
achieve discharge concentrations of less
than 5 mg/litre of oil under standard test
conditions. These separators are required
for discharges to surface water drains and
the water environment.
The Class 1 ACO Q-Ceptor uses high
performance coalescing filters positioned
above the silt storage area, ensuring
optimum performance under the harshest
conditions. Under test conditions the
ACO Q-Ceptor reduces concentrations to
less than 1mg/litre of oil.
Class 2
Class 2 separators are designed to
achieve discharge concentrations of less
than 100 mg/litre of oil under standard
test conditions. They are suitable for
dealing with discharges where a lower
quality requirement applies, for example
where the sewer provider allows
discharges to the foul system.
Both Class 1 and Class 2 ACO Q-Ceptors
are available as bypass or full retention
separators.
Bypass separators
ACO Q-Ceptor bypass separators fully treat
all flows generated by rainfall rates of up
to 6.5mm/hr. Flows above this level
deemed “high flows” are allowed to bypass
the separator. These separators are used
when it is considered an acceptable risk
not to fully treat these high flows, typically
in areas where there is a small risk of
spillage such as short stay car parks.
Full retention separators
ACO Q-Ceptor full retention separators
treat the full flow typically generated by a
rainfall intensity of 65mm/hr. Full
retention separators are used where there
is a risk of regular contamination with oil
and a foreseeable risk of significant
spillages e.g. vehicle maintenance areas.
ACO Q-Ceptor bypass and full retention oil
separators are available in four sizes. For
details of the sizes available, please refer
to the features overview on the next page.
The ACO Q-Ceptor oil separator range
Why choose ACO Q-Ceptor oil separators?
4 Class 1 and 2, full retention and
bypass separators available
4 Compliant with the Environment
Agency’s PPG3 guidelines
4Environment Agency verified
manufacturer
4 Independently certified range
of sizes to BS EN 858-1 and
BS EN 858-2
4Contractor friendly bypass connections
for 160mm PVC-U, 225mm, 300mm
and 375mm twinwall or clay pipe work
4 Robust polyethylene construction for
long service life and improved
durability over GRP units
4 Compact vertical design for ease of
handling, installation and
maintenance
4 Maintenance friendly design, for
simple operation and excellent
accessibility
4 In-chamber sampling capability
removes the need for expensive
separate sampling chambers
4 Full range of quality oil, silt and high
level alarm systems
4 Light weight polyethylene extension
shaft, easy to handle and install
6
ACO Q-Ceptor
*For optimum performance of each bypass separator the pipe diameter stated in the chart on page 11 must be used. Using pipe diameters less than
those stated will reduce the efficiency of the separator. Stated pipe diameters must not be exceeded.
ACO Q-CEPTOR FEATURES OVERVIEW
Compact design reduces excavation
and installation costs
Highly durable polyethylene body, less
prone to damage than GRP units
D 400 separator cover and frame
available
Coalescing filter located for simple
removal and maintenance. Unit can
be cleaned by normal water pressure
Large diameter opening for easy
maintenance access
Connection for optional sampling
pump which obviates the need for
separate and expensive sampling
chambers
Extension shaft Ø716mm available
3
7
6
5
4
2
1
ACO Q-Ceptors have a range of key features which are common to both the bypass and full retention chambers and are numbered
below. Bypass and full retention chambers each have a set of features specific to their product types. These features are
highlighted on the product images below.
ACO Q-Ceptor oil bypass separators
Oil storage
capacity from
45 to 150 litres
Bypass inlet connections
accept 160mm PVC-U,
225mm, 300mm and
375mm twinwall or clay
pipe work*
For draining areas up to
5560m2. See page 9
for further details
Bypass unit has a Ø110mm
plugged socket to provide
maintenance access
Bypass outlet connections
accept 160mm PVC-U,
225mm, 300mm and
375mm twinwall or clay
pipe work*
High flow rate bypass
separator for peak flows
from 30 to 100 l/s
Available sizes of Class 1 and Class 2
separators NSB3, NSB6, NSB8, NSB10.
All Environment Agency compliant and
certified to BS EN858-1:2002
5
4 11
12
6
2
1 9
10
8
7
Minimum working capacity of 1,000
litres excluding silt complies fully
with PPG3
Flat base for stability during
installation and levelling, with
integrated lifting slots for forks
Ribbed body design resists deflection
during installation and provides
concrete key/anchors
Ø110mm vent connection
Integrated lifting holes for use with
slings
12
9
8 10
11
Automatic warning
alarms / devices
PPG3 requires all oil separators to be
installed with a robust visual and
audible warning device to indicate that
the chamber needs emptying. ACO
offer a complete range of oil, silt, and
high level alarm systems. See page 17
for details.
Treats full
runoff entering
the chamber
Full retention
separator for peak
flows from 3 to 10 l/s
Oil storage capacity
from 30 to 100 litres
Outlet connection for
Ø110mm and Ø160mm
PVC-U pipe connections
For draining areas up
to 555m2. See page
13 for further details
Inlet connection
for Ø110mm and
Ø160mm PVC-U
pipe connections
ACO Q-Ceptor full retention separators
Available sizes of Class 1 and Class 2 separators
NS3, NS6, NS8, NS10. All Environment Agency
compliant and certified to BS EN 858-1:2002
Automatic Closure
Device prevents
contamination of
outlet discharge
when storage
volume is exceeded
i
5
4
11
6
2
9
1
10
8
12
7
3
8
How to choose the correct separator
ACO Q-Ceptor
1. Permission must be sought from local
sewer provider before deciding which
separator to install and before making
discharge.
2. Prior permission must be sought from
the Environment Agency before
deciding which separator to install.
3. In this case, if it is considered that there
is a low risk of pollution a source control
SUDS scheme may be appropriate.
4. In certain circumstances, the sewer
provider may require a Class 1
separator for discharges to sewer to
prevent explosive atmospheres from
being generated.
5. Drainage from higher risk areas such
as vehicle maintenance yards and
goods vehicle parking areas should be
connected to foul sewer in preference
to surface water.
6. In certain circumstances, a separator
may be one of the devices used in the
SUDS scheme. The Environment Agency
should be contacted for further advice.
Environment Agency
Tel: 08708 506 506
Web: www.environment-agency.gov.uk
Use the flow chart to help you select the
appropriate separator for your site. More
than one separator might be required on
larger sites or a site with many activities.
You will need to consider local
circumstances and risk factors including:
- the discharge point of your
proposed separator
- the environmental sensitivity of
your location
- activities on your site
PPG 3 advises that SUDS should be
incorporated into the surface water
drainage whenever possible. This is a legal
requirement in Scotland. The introduction
of a SUDS system may remove the
requirement for an oil separator.
YES YES YES YES NO
YES
IF NOT SUITABLE
YES
YES
YES
YES
Is there a risk of oil contaminating the drainage from the site?
Risk of infrequent
light contamination
and potential for
small spills only
e.g. car park.
Risk of regular
contamination of
surface water runoff
with oil and/ or risk
of larger spills
e.g. vehicle
maintenance area,
Goods Vehicle
parking or vehicle
manoeuvring. (5)
Drainage will also
contain dissolved
oils, detergents or
degreasers such as
vehicle wash water
and trade effluents
e.g. industrial sites.
Fuel oils are
delivered to and
dispensed on site
e.g. retail fuel
forecourts.
Very low risk of oil
contamination
e.g. roofwater.
Source control SUDS
must be considered
and incorporated
where suitable.
Separator not
required.
Clean water should
not be passed
through the
separator unless
the size of the unit
is increased
accordingly.
The use of SUDS should be considered at all sites and they should be incorporated where suitable.
SUDS can be used to polish the effluent from these separators before it enters the environment. (6)
Source control SUDS
should be considered
where possible.
V V V V V
V
V
V
V
V V V V V
Full retention
separator with
alarm required.
Class 1 if discharge
to surface water. (2)
Class 2 if discharge
to foul sewer. (1)
Trade effluents
must be directed to
the foul sewer. (1)
It may need to pass
through a separator
before discharge to
sewer to remove
free oils.
Full retention
‘forecourt’ separator
with alarm required.
Class 1 if discharge
to surface water. (2)
Class 1 or 2 if
discharge to foul
By-pass separator sewer. (1,4)
with alarm required.
Class 1 if discharge
to surface water. (2,3)
Class 2 if discharge
to foul sewer. (1)
V
V
V
IMPORTANT NOTES:
V
Bypass Separators
9
ACO Q-Ceptor bypass oil separators fully treat all
flows caused by rainfall up to 6.5mm per hour which
includes the vast majority of rainfall events in the UK.
In this scenario it is deemed acceptable not to treat the full flow, and
where the worst pollutants will be carried off by the initial flow, for
example car parks, roadways and some commercial areas.
Once 10% of the peak flow rate is exceeded, the flow bypasses the
separation chamber and discharges directly into the drainage system.
ACO Q-Ceptor bypass oil separators
*NSB 10
Nominal size
bypass (NSB)
5560* Area drained (m2)
3 - 10 Treated flow (l/s)
30 - 100 Peak flow (l/s)
1 & 2 Performance
Class
45 - 150 Oil storage
capacity (litres)
300 - 1000 Silt storage
capacity (litres)
BYPASS SEPARATORS
3 6
8 10
10
ACO Q-Ceptor bypass oil separator – Design principles
ACO Q-Ceptor
Silt
90% enters
the bypass
chamber
90% bypass flow
10% treated flow
10% enters
the treatment
chamber
Bypass
Water
Oil
ACO Q-Ceptor bypass oil separators are
designed to treat 10% of the peak flow
into the unit. This 10% is known as the
treated flow. Flows in excess of this 10%
are allowed to bypass the treatment
chamber.
Runoff entering the unit is retained within
the treatment chamber for sufficient time
to allow the oil carried in it to float to the
top and for any silt in the water to settle
to the bottom of the tank. The clean
water remaining below the layer of
floating oil discharges through the outlet.
The ACO Q-Ceptor bypass separator is
designed with a bypass chamber around
the top of the unit that permits flows in
excess of the treated flow to bypass the
treatment chamber.
Bypass units are permitted in locations
where the risk of pollution is low, and in
particular where the risk of a large
volume of pollution is low. The reasoning
behind this is that most rainfall in the UK
is at an intensity of 0.0018 l/sm2 or less,
and all runoff from this light rain will pass
through the treatment chamber.
In heavier rain, most of the pollution will
be carried by the initial first flush of
runoff, which will all be treated. As a
result of this any pollution in the bypass
flow at the peak of the storm will have
been massively diluted.
ACO’s design of bypass chamber ensures
that no bypass will occur before the
designed treated flow is reached.
Thereafter, the treated flow will continue
to pass through the unit, with excess flow
(of up to 9 times the treated flow rate)
allowed to bypass the treatment chamber.
ACO Q-Ceptor bypass oil separators are
available to BS EN 858-1:2002 Class 1
or Class 2. When Class 1 effluent (better
than 5 mg/l) is required, a coalescing
filter is fitted to the unit. Without the
coalescing filter the separators operate to
Class 2 and achieve a treatment standard
of better than 100 mg/l.
Maintenance
Regular maintenance is essential to
ensure that a separator continues to
operate to its full design capability
throughout its working life. This
maintenance includes monitoring the oil
and silt levels, and removing any
accumulated waste. Alarm systems are
fitted to carry out this monitoring on a
continuous basis. BS EN 858-2:2003
requires that a physical inspection must
take place at intervals of no more than 6
months. The standard also requires that
every five years the separator must be
emptied and given a general inspection to
test the integrity and performance of the
system. The separator must be refilled
with clean water following such an
inspection.
Key:
Bypass flow
Treated flow
11
ACO Q-Ceptor bypass oil separators
ACO Q-Ceptor bypass separators should
be sized in accordance with the guidance
in PPG3.
The appropriate size of separator is
calculated by applying a standard formula
to the area to be treated. The precise
formula depends on whether a full
retention or bypass separator is to be
used. In all cases the area to be drained
is referred to as A.
The Nominal Size (NS) is the flow rate, in
litres per second, which can be treated by
the unit to the specified standard, Class 1
or Class 2. Bypass separators are referred
to as NSB (Nominal Size Bypass).
Design Example 1:
Sizing a bypass separator
Assume you have a car park of 3,000m2.
This is area A.
The nominal size of a bypass separator
for a catchment of area A (m2) is
obtained using the following formula:
NSB = 0.0018 x A
Applying this formula to the car park of
3000m2 gives a result of 5.4. Therefore
this car park would require a bypass
separator of size NSB6.
ACO Q-Ceptor bypass separators are
available as Class 1 or Class 2
performance types. They are also
available with or without a sampling
pump pre-fitted to the units.
Part numbers for chambers without
a sampling pump can be found in
column A.
Part numbers for chambers with
a sampling pump pre fitted can be
found in column B.
How to choose the correct size
These products are subject to weight and dimensional tolerances. The dimensions shown on this page are for guidance purposes only.
Bypass separator chambers
Product
Code A
Product
Code B
Nominal
Size
Treated
Flow
(l/s)
Peak
Flow (l/s)
Performance
Class
Area
Drained

Oil
Storage
Capacity
(litres)
Silt
Storage
Capacity
(litres)
Length
Overall
(mm)
Width
Overall
(mm)
Depth
Overall
(mm)
Inlet
Height
(mm)
Outlet
Height
(mm)
Pipe
Internal
Diameter*
(mm)
Weight
(kg)
34500
34501
34502
34503
34505
34506
34507
34508
34560
34561
34562
34563
34565
34566
34567
34568
NSB3
NSB6
NSB8
NSB10
NSB3
NSB6
NSB8
NSB10
3
6
8
10
3
6
8
10
30
60
80
100
30
60
80
100
Class 1
Class 1
Class 1
Class 1
Class 2
Class 2
Class 2
Class 2
1670
3335
4445
5560
1670
3335
4445
5560
45
90
120
150
45
90
120
150
300
600
1000
1000
300
600
1000
1000
2300
2300
2300
2300
2300
2300
2300
2300
1200
1200
1200
1200
1200
1200
1200
1200
1580
1800
2100
2100
1580
1800
2100
2100
1067
1287
1587
1587
1067
1287
1587
1587
917
1137
1437
1437
917
1137
1437
1437
300
300
375
375
300
300
375
375
102
116
130
130
99
111
125
125
Outlet height
Inlet height Pipe diameter
Depth overall
Width overall
850mm
Length overall
1550mm
Ø750mm
ACO Q-Ceptor bypass oil separator
*For optimum performance of each separator the pipe diameter stated in the chart must be used. Using pipe diameters less than those stated will reduce the efficiency of the
separator. Stated pipe diameters must not be exceeded. Pipe internal diameters in the chart refer to twinwall or clay pipe work.
Bypass Separators
12
ACO Q-Ceptor bypass oil separators
ACO Q-Ceptor
These products are subject to weight and dimensional tolerances. The dimensions shown on this page are for guidance purposes only.
Ancillaries
Product Code Description
Length
(mm)
Width Overall
(mm)
Depth Overall
(mm)
Weight
(kg)
700745
700748
418094
Coalescing filter for NSB3
Coalescing filter for NSB6, 8 & 10
Sampling pump with 4m hose
-
-
-
Ø230
Ø360
-
660
790
-
1.2
3.6
3.5 Depth overall
Width overall
Coalescing filter
Stainless steel sampling pump with 4m hose
Extension shaft
Product Code Description
Internal Diameter
(mm)
Length
(mm)
Width Overall
(mm)
Depth Overall
(mm)
Weight
(kg)
34520 Extension shaft Ø716 - Ø865 1059 19.1
Ø865mm
999mm
1059mm
Ø716mm
Extension shaft
Cover and frame
Product Code Description
Length
(mm)
Width Overall
(mm)
Depth Overall
(mm)
Weight
(kg)
34625 Ductile iron solid cover and frame D 400 - Ø750 100 87.0
100mm 930mm
Ø700mm
Clear opening
Cover and frame
*NS 10
13
Full retention separators
ACO Q-Ceptor full retention oil separators treat the
complete flow caused by rainfall up to 65mm per
hour and where there is a high risk of contamination.
These separators hold the contaminated water for a period long
enough to ensure that the lighter contaminates separate from the
water and rise above it within the separation chamber. Micro
particles are collected and combine on the coalescing filter until they
are large enough to float free by themselves.
Full retention separators are used for example in vehicle maintenance
and refuelling areas or scrapyards.
ACO Q-Ceptor full retention oil separators
Nominal size
(NS)
555* Area drained (m2)
3-10 Peak flow (l/s)
1 & 2 Performance
class
30-100 Oil storage
capacity (litres)
300-1000 Silt storage
capacity (litres)
FULL RETENTION
SEPARATORS
3 6
8 10
14
ACO Q-Ceptor
ACO Q-Ceptor full retention oil separators
treat all flows to the required effluent
standard, up to the designed flow rate of
the unit.
Thereafter, in extreme rainfall events and
at flow rates in excess of the design flow,
the runoff will still flow into the treatment
chamber until the maximum hydraulic
capacity of the unit is reached.
Runoff entering the unit is retained within
the treatment chamber for sufficient time
to allow the oil carried in it to float to the
top and for any silt in the water to settle
to the bottom of the tank.
ACO Q-Ceptor full retention oil separators
are available to BS EN 858-1:2002
Class 1 or Class 2. When Class 1 effluent
(better than 5 mg/l) is required, a
coalescing filter is fitted to the unit. This
filter allows very small drops of oil that are
too small to float upwards independently
to coalesce into drops which are large
enough to float up into the retained oil.
Without the coalescing filter the separators
operate to Class 2 and achieve a treatment
standard of better than 100 mg/l.
ACO full retention separators are fitted
with an Automatic Closure Device (ACD).
This is a float which is weighted so that it
floats in water but not in oil. The ACD
ensures that if there is a large pollution
event that fills the oil capacity of the
separator (or if the unit is not being
regularly maintained and the oil level
builds up) then the outlet of the unit is
closed and the oil retained in the unit
cannot be washed out into the outflow
system.
Maintenance
Regular maintenance is essential to
ensure that a separator continues to
operate to its full design capability
throughout its working life. This
maintenance includes monitoring the oil
and silt levels, and removing any
accumulated waste. Alarm systems are
fitted to carry out this monitoring on a
continuous basis. BS EN 858-2:2003
requires that a physical inspection must
take place at intervals of no more than 6
months. The standard also requires that
every five years the separator must be
emptied and given a general inspection to
test the integrity and performance of the
system. The separator must be refilled
with clean water following such an
inspection.
ACO Q-Ceptor full retention oil separator – Design principles
Silt
100% enters the
treatment chamber
100% treated flow
Water
Oil
Key:
Treated flow
15
ACO Q-Ceptor full retention oil separators
These products are subject to weight and dimensional tolerances. The dimensions shown on this page are for guidance purposes only.
Full retention separators
ACO full retention separator chamber
Product
Code A
Product
Code B
Nominal
Size
Peak
Flow (l/s)
Performance
Class
Area
Drained

Oil
Storage
Capacity
(litres)
Silt
Storage
Capacity
(litres)
Length
Overall
(mm)
Width
Overall
(mm)
Depth
Overall
(mm)
Inlet
Height
(mm)
Outlet
Height
(mm)
Pipe
Diameter
(mm)
Weight
(kg)
34510
34511
34512
34513
34515
34516
34517
34518
34570
34571
34572
34573
34575
34576
34577
34578
NS3
NS6
NS8
NS10
NS3
NS6
NS8
NS10
3
6
8
10
3
6
8
10
Class 1
Class 1
Class 1
Class 1
Class 2
Class 2
Class 2
Class 2
167
333
444
555
167
333
444
555
30
60
80
100
30
60
80
100
300
600
1000
1000
300
600
1000
1000
1730
1730
1730
1730
1730
1730
1730
1730
1200
1200
1200
1200
1200
1200
1200
1200
1580
1800
2100
2100
1580
1800
2100
2100
970
1218
1518
1518
970
1218
1518
1518
950
1198
1498
1498
950
1198
1498
1498
110
160
160
160
110
160
160
160
78
99
113
113
77
96
110
110
Depth overall
Ø750mm
1550mm
Inlet height
Outlet height
Pipe diameter
Length overall Width overall
ACO Q-Ceptor full retention separator
ACO Q-Ceptor full retention separators
should be sized in accordance with the
guidance in PPG3.
The appropriate size of separator is
calculated by applying a standard formula
to the area to be treated. The precise
formula depends on whether a full
retention or bypass separator is to be
used. In all cases the area to be drained
is referred to as A.
The Nominal Size (NS) is the flow rate, in
litres per second, which can be treated by
the unit to the specified standard, Class 1
or Class 2. Full retention separators are
referred to as NS (Nominal Size).
Design Example 2:
Sizing a full retention separator
Assume you have an HGV yard of 500m2.
This is area A.
The nominal size of a full retention
separator for a catchment of area A (m2)
is obtained using the following formula:
NS = 0.018 x A
Applying this formula to the HGV yard of
500m2 gives a result of 9. Therefore this
yard would require a full retention
separator of size NS10.
ACO Q-Ceptor full retention separators
are available as Class 1 or Class 2
performance types. They are also
available with or without a sampling
pump pre-fitted to the units.
Part numbers for chambers without
a sampling pump can be found in
column A.
Part numbers for chambers with a
sampling pump pre-fitted can be found
in column B.
How to choose the correct size
16
ACO Q-Ceptor full retention oil separators
ACO Q-Ceptor
These products are subject to weight and dimensional tolerances. The dimensions shown on this page are for guidance purposes only.
Ancillaries
Product Code Description
Length
(mm)
Width Overall
(mm)
Depth Overall
(mm)
Weight
(kg)
700745
700748
701580
701583
418094
Coalescing filter for NS3
Coalescing filter for NS6, 8 & 10
Automatic Closure Device (ACD) for NS3
Automatic Closure Device (ACD) for NS6, 8 & 10
Sampling pump with 4m hose
-
-
-
-
-
Ø230
Ø360
Ø160
Ø220
-
660
790
265
420
-
1.2
3.6
2.8
7.1
3.5
Depth overall
Width overall
Depth
overall
Width overall
Coalescing filter Automatic Closure Device (ACD) Stainless steel sampling pump with 4m hose
Extension shaft
Product Code Description
Internal Diameter
(mm)
Length
(mm)
Width Overall
(mm)
Depth Overall
(mm)
Weight
(kg)
34520 Extension shaft Ø716 - Ø865 1059 19.1
Ø865mm
999mm
1059mm
Ø716mm
Extension shaft
Cover and frame
Product Code Description
Length
(mm)
Width Overall
(mm)
Depth Overall
(mm)
Weight
(kg)
34625 Ductile iron solid cover and frame D 400 - Ø750 100 87.0
100mm 930mm
Ø700mm
Clear opening
Cover and frame
17
BS EN 858-1:2002 and the Environment
Agency’s Pollution Prevention guidelines
(PPG3) require that all oil separators must
be fitted with an automatic alarm/warning
device to provide visual and audible
warning when the level of oil reaches 90%
of the storage volume under static liquid
level conditions. These alarms/warning
devices indicate that the separator is in
need of immediate emptying for it to
continue to work effectively.
In order to meet this requirement, ACO
offer a full range of visual and audible
electronic alarm systems. The alarms are
designed to continuously monitor the
critical operating conditions of the
separator and provide a warning early
enough to prevent any discharge of
pollutants into the environment. All the
alarm systems can be fitted either during
installation and commissioning of a new
oil separator, or to existing installations.
The alarm systems provide a high level of
environmental safety, are simple to install
and provide an economical solution
where the necessary cabling and ducting
can be provided. To ensure precise
monitoring in any situation, all of the
alarm systems come complete with oil
probes and can be fitted with sensor
probes for silt and high liquid levels.
The standard alarm range consists of an
IP65 mains separator alarm with a high
oil probe (inc. 5m fly lead).
Optional silt & high liquid level probes
provide additional indication of
maintenance requirements.
GSM alarm systems are ideal for areas
where people are not present and send an
SMS (text) warning message via a GSM
mobile phone network, offering 24/7
protection. Battery and solar powered units
give greater installation flexibility where oil
separators are used in areas without a
readily available power supply.
ACO Q-Ceptor alarm systems
Alarm systems
Alarm kits
Product Code Description
44501
44504
44505
IP65 mains separator alarm with high oil probe
Solar powered separator beacon alarm with oil probe
Solar powered separator GSM alarm with oil probe
Accessories
Product Code Description
44508
44509
44510
44511
44512
44513
44514
High liquid probe
Silt probe
Probe mounting kit
Flashing beacon kit
Flashing beacon/siren kit
Signal distribution box
Secure enclosure
The Range
Solar alarm High liquid probe Silt probe Flashing beacon Beacon siren
IP65 mains separator alarm
with oil probe
18
ACO Q-Ceptor
Installation notes
Site conditions
These recommendations indicate
the requirements for installation of
ACO Q-Ceptors in typical site conditions.
The customer should ensure that the
requirements for their particular site
conditions and anticipated loadings are
met, taking Engineering advice where
necessary.
Flotation
These recommendations assume that the
unit is to be installed with a concrete
backfill. Even with the minimum
recommended thickness of concrete, the
units, when empty, are vulnerable to
flotation if the ground water level is high.
Care must therefore be taken during
installation, and consideration given as to
whether additional concrete should be
provided in wet locations.
In lightly loaded situations, the units can
be installed without concrete backfill,
using a suitable granular material as
backfill. However a concrete slab is likely
to be required over the unit and the unit
will be particularly vulnerable to flotation
in groundwater. Engineering advice
should be sought.
The ACO Q-Ceptor range of separators is
Environment Agency compliant and
conforms fully to the requirements of
PPG3. In addition, all ACO Q-Ceptor
separators have been designed and
independently tested to BS EN 858-
1:2002 and BS EN 858-2:2003. The
customer (or their client) is responsible
for ensuring that the installation of the
unit is in compliance with any regulatory
requirements of the planning authorities,
Building Control, Environment Agency,
Water Company, national and European
standards, etc.
Installation should only be carried out
by an experienced and competent
contractor. Electrical work (e.g. alarms)
must only be carried out by a suitably
qualified electrician.
This section provides general installation notes for ACO Q-Ceptors
that should be followed before installation. These notes should be
read together with the recommended installation detail shown in
the drawing on the following page.
Contractors are advised to obtain a copy of the full installation recommendations. To do so, please contact
the ACO Water Management Design Services Team on 01462 816666 or email technical@aco.co.uk.
i
19
Installation detail
1. The customer should ensure that the
requirements for their particular site
conditions are met, taking engineering
advice where necessary. These
recommendations assume that the unit is
to be installed with a concrete backfill.
2. Lift using a forklift through the slots
under the base or webbing slings fixed
through the lifting holes on the sides of the
unit. Do not lift the unit using slings
around the bypass channel. Take care that
the units do not tip during handling. Do
not drag, drop or roll the units. Store the
units on firm level ground.
3. Excavate a hole to receive the unit,
allowing for a minimum of 200mm
thickness of concrete below and all around
the unit and with sufficient working space
for the connection of pipework, ducts and
vents. Any unsuitable ground is to be
removed and replaced. Engineering advice
may be necessary. The excavation is to be
kept free of water.
4. All concrete used in the installation is to
be of minimum grade C16/20. Where
necessary a higher specification of
concrete may be required. Engineering
advice should be sought. Pour a minimum
200mm thickness of concrete onto the
base of the excavation, and whilst the
concrete is still wet carefully lower the
separator unit onto the concrete. Check
that the unit is fully supported by the
concrete, is level and at the correct height.
Check the orientation. Allow the concrete
to harden.
5. Add 500mm depth of water to the
inside of the unit. Carefully place
additional concrete to the sides of the unit
to a level between 400mm and 500mm
above the base of the unit. Do not use
vibrating pokers. Check that the unit is still
correctly positioned and level. Allow this
concrete to harden.
6. Add water to fill the unit to the invert of
the outlet pipe. Carefully place additional
concrete to the sides of the unit to a level
just below the outlet pipe level, ensuring
there is sufficient room left for the
installation of the pipework. Allow this
concrete to harden.
7. Connect the inlet and outlet pipework,
vent pipe and bypass access pipe. The
bypass separators have four possible pipe
diameter connections. Cut the connection
spigot at the appropriate location - see full
installation recommendations for further
guidance. Using pipe diameters other than
those stated in the brochure and guidance
will reduce the efficiency of the separator.
8. If an extension shaft is required, cut the
shaft to the correct length and fit it to the
top of the unit with sealant 8- 10mm thick.
9. Install a duct (with drawstrings) for the
electrical cabling to the alarm.
10. Place further concrete backfill to the
unit, in pours of maximum 500mm height
allowing the concrete to harden between
pours.
11. Fit the cover and frame.
12. If a sampling pump is to be fitted, fix
the top hose clamp near to the underside
of the cover and attach the hose to the top
hose clamp.
13. Fit the alarm(s). This work is to be
carried out by a qualified electrician. The
alarm probes are to be hung at the correct
levels, as shown in the detailed installation
instructions.
14. Ensure any debris is cleared from
inside the unit. Top up the unit with clean
water. Fit the float (only required in full
retention separators) and the coalescing
filter (only required in Class 1 separators).
Ensure that the float has floated up off its
seating, (and if necessary lift it off its
seating so that it is floating).
ACO Q-CEPTOR OIL SEPARATORS
Out
In
200mm
Coalescing filter
(Float inside)
Alarm
cable
duct
Alarm cable duct through
extension shaft (or single collar of unit)
Vent pipe height and location
to comply with local regulation
Cover and frame
200mm
Extension
shaft Alarm configuration
High level alarm sensor probe
Oil level sensor probe (mandatory)
Silt level sensor probe
A
A
B
B
C
C
An electronic version of the
ACO Q-Ceptor installation
detail is available to download from the
ACO website. Visit www.aco.co.uk.
i
Bypass access socket
Sampling hose
connection
(optional)
ACO Q-Ceptor Bypass chamber
detail only
20
ACO Q-Ceptor
Guide to installing the ACO Q-Ceptor
Step 1:
For a bypass separator, cut the
connection collar to suit the required size
of connecting pipework.
Step 2:
Excavate a hole 200mm wider and
deeper than the separator chamber. Set
the chamber to required level on a
minimum 200mm deep bed of concrete
(minimum grade 16/20). Ensure inlet and
outlet are at the correct orientation and
level. Allow concrete to harden.
Step 3:
Check the level of the inlet and outlet
pipes and add approximately 500mm of
water to the chamber. Haunch with
between 400mm and 500mm of
concrete. Once completed, check levels.
Allow concrete to harden.
Step 4:
Add more water to the separator and
backfill with concrete, keeping the water
approximately 500mm above the
concrete level. Fill the unit with water to
the invert level of the outlet pipe. Backfill
with concrete until the concrete is just
below the outlet pipe level, ensuring that
there remains adequate working room to
fit the pipework.
Step 5:
Push connecting pipe into the collar and
make good a joint with caulking and a
suitable mortar or sealant. Fit bypass access
pipe if required. Connect the vent pipe.
Connect alarm cable duct through extension
shaft (or neck of separator) and seal.
Step 6:
Fit extension shaft if required and cut to
correct height, using sealant to ensure a
watertight joint between the shaft and the
separator. Complete fitting of the
sampling pump hose (if required). Backfill
with concrete in 500mm steps, allowing
concrete to harden between pours. Brace
the inside of the extension shaft if
necessary to avoid distortion during the
concrete pours. Continue until final
concrete level is reached (just below
underside of cover frame).
21
Step 7:
Trim extension shaft to correct height. Fit
the cover frame. Fit the alarm system in
accordance with the manufacturer’s
installation recommendations – this should
be carried out by a qualified electrician.
Lower the ACD into position (full retention
separators only). Lower the filter into
position (Class 1 separators only).
Step 8:
Ensure that the unit is free from all debris
and fill with water to the outlet level.
Ensure that the float is floating (if
applicable) and the filter is correctly
positioned (if applicable). Fit the cover.
22
ACO Q-Ceptor
Maintenance and servicing
In order to ensure the reliable functioning
of oil separators and ongoing
environmental protection they require
regular maintenance and servicing.
Unless this is done, environmental
damage and the resulting risk of liability
cannot be prevented.
ACO service partners work closely with
the UK Environment Agencies and are
able to offer ongoing maintenance and
servicing programmes, waste disposal,
inspection, testing and full installation
and commissioning of oil separators and
alarms. For further details please contact
the ACO Water Management Design
Services Team on 01462 816666.
Model specification clause
The oil separator shall be an ACO
Q-Ceptor Oil Separator supplied by
ACO Water Management, [Full Retention
or Bypass], [size NS* or NSB*], [Class 1
or Class 2#]. The unit shall be
manufactured from High Density
Polyethylene and include (for Class 1
separators) a coalescing filter
manufactured from polypropylene fibres
reinforced with stainless steel wire and
include (for full retention separators) a
weighted float automatic closure device.
The unit is to be designed and
manufactured in accordance with
BS EN 858-1, and is to conform to the
recommendations in the Environment
Agency Guidelines PPG3.
The oil separator is to be installed in
accordance with the manufacturer’s
recommendations.
* insert nominal size as required
# insert the required option
NBS Specifications
ACO Q-Ceptor Oil Separator should be
specified in section R12:421. Assistance
in completing this clause can be found in
the ACO Water Management entry in NBS
Plus, or please contact the ACO Water
Management Design Services Team.
Note: A specification in NBS format is
available to download from www.thenbs.com
or www.aco.co.uk.
Recycling
All the components of ACO Q-Ceptor are
recyclable. Separate the units into the
plastic and metal parts and recycle in
accordance with local regulations.
Certification
ACO Q-Ceptor oil separators are fully certified to BS EN 858-1:2002 and BS EN 858-2:2003.
Test certificates are available on request. Please contact the ACO Water Management Design Services Team on 01462
816666 for further information.
BS EN 858-1:2002
BS EN 858-2:2003
23
Notes
ACO Water Management:
Civils + Infrastructure
A division of ACO Technologies plc
ACO Business Park,
Hitchin Road,
Shefford,
Bedfordshire
SG17 5TE
Tel: 01462 816666
Fax: 01462 815895
e-mail Enquiries: awmenquiries@aco.co.uk
e-mail Sales: customersupport@aco.co.uk
e-mail Technical: technical@aco.co.uk
website: www.aco.co.uk
The ACO Group: A strong family you can depend on.
© October 2014 ACO Technologies plc. All reasonable care has been taken in compiling the information in this document. All recommendations and suggestions on
the use of ACO products are made without guarantee since the conditions of use are beyond the control of the Company. It is the customer's responsibility to ensure
that each product is fit for its intended purpose, and that the actual conditions of use are suitable. This brochure and any advice is provided by ACO Technologies plc
(the Company) free of charge and accordingly on terms that no liability including liability for negligence will attach to the Company or its servants or agents arising
out of or in connection with or in relation to this brochure or any such advice. Any goods supplied by the Company will be supplied solely upon its standard
conditions of sale, copies of which are available on request. The Company's policy of continuous product development and improvement renders specifications liable
to modification. Information provided in this brochure is therefore subject to change without prior notification.
ACO CARES ABOUT THE ENVIRONMENT
Printed on material approved by the Forest Stewardship Council (FSC) who provide a means of assuring that products come from responsibly managed forest.
ACO Technologies plc
PC21343
g ACO Water Management
Civils + Infrastructure
Urban + Landscape
g ACO Building Drainage
g ACO Sport
g ACO Wildlife

Request Brochure