User manual | SDD TECHNICAL MANUAL

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SDD TECHNICAL MANUAL
OIL GRIT SEPARATOR SYSTEM (SDD)
(
01/02/2016
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Technical manual
Oil and sand removal system (SDD)
Description :
Treatment unit (separator) hydrodynamic, oil and sand extractor –
Circular SDD (In-line and Off-Line).
Use :
System designed to capture matter in suspension (M.E.S.) including
fine particles, oil, stormwater runoff, and grease.
Standard :
Meet policy requirements of MDDELCC as well as NJDEP 2013 protocol.
Tests has been conducted by an independent laboratory, “Centre Des
technologies de L’eau”, validated and supervised by an independent
qualified firm.
SDD system is made to reduce 60 % amount of annual charge
suspended solids of granulometric curve of particles between 2 and
1000 μm and with a mass median diameter of less than 75 μm
(micron).
Efficiency :
Conception and configuration of the system SDD BRUNET fosters a
double action vortex, ensuring an optimal treatment level, in either
light or heavy rain, and avoiding re-suspension of particles.
SDD removes 95% of floating oil without any possible re-suspension.
Network
operation :
SDD system can be installed «IN-LINE» or «OFF-LINE», in series or in
parallel, depending on the need. Where an exceptional raining event
occurs (1/10 years), polluant would not escape. Moreover, this system
has no effect on hydraulic grade line (HGL)
Manufacturing
standards :
Construction is made with reinforced concrete and meets N.Q. 1809300, B.N.Q. 2622-420 and DN-II-3-002 standards of the “Ministère des
Transports du Québec”.
Inside
components :
Separation device is made of 5052-H32 aluminium, which is an alloy
with high mechanical properties, resistant to thermal treatments and
has a good resistance to vibration fatigue. This alloy has an excellent
corrosion resistance, even in saltwater.
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Technical manual
Oil and sand removal system (SDD)
Maintenance :
SDD needs regular inspection and maintenance when necessary, to
guarantee optimum performance.
Inspection should be done at least twice a year (spring and autumn).
However, more frequent inspections will be required if unit is
thoroughly washed, for example, if exposed to salt and sand during
the winter, this can quickly fill the unit with sediments.
SDD must be cleaned when sediment has accumulated to B the
maximum depth in the processing vault. This level can be determined
by taking two measurements with a graduated instrument.
Inspection :
First measurement should be taken from the opened manhole up to
the horizontal plate ( see Figure 2: Maintenance Inspection - step 1)
Second measurement should be taken from the opened manhole up to
the surface of the accumulated sediments. Access to the sediment
layer is through one of the holes labelled CONE (see Figure 3:
Maintenance Inspection - step 2). If the result between these 2
measurements is lower or equal to B, SSD maintenance should be
conducted so that efficient performance of the unit can be maintained.
For more details, refer to maintenance manual.
Cleaning :
The simplest method of removing pollutants from the SDD is by using a
vacuum truck. No need to enter, only remove the cover and insert the
cleaning hose into manhole. The pollutants must be disposed of in
accordance with current regulation. It is important to wash with a high
pressure hose to entirely remove mud. For more details, refer to
maintenance manual.
If a maintenance employee enters the unit, working in confined areas
rules must be applied.
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Technical manual
Oil and sand removal system (SDD)
(SDD
Table 1 : Dimensions & C
Capacities of SDD IN-LINE and OFF-LINE
IN-LINE / OFF-LINE
LINE
Volume
sediments
100%
Sizes
of SDD (m)
Model
Volume oil
maximum
Process
Maximum
and
Diameter flow (rain flow (1/10
floating
pipeline 1/6 month)
years))
matter
SDD
DIA (m)
A (m)
B (m)
m3
L
mm
l/sec
l/sec
900
1200
1500
1600
1800
2100
2400
3000
3600
4000
0,910
1,210
1,515
1,597
1,825
2,125
2,435
3,040
3,650
4,000
1,39
1,70
1,95
2,00
2,20
2,49
2,68
3,24
3,81
4,14
1,00
1,25
1,47
1,52
1,705
1,985
2,274
2,840
3,409
3,736
0,5
1,0
1,7
1,9
2,6
3,5
3,7
5,8
8,4
10,1
149
355
682
810
1223
1938
2914
5680
9840
16830
450
600
750
900
1050
1200
1500
1500
1500
1500
15,3
27,0
42,3
47,0
61,3
83,1
109,2
170,1
248,0
299,0
30,5
53,9
84,5
93,9
122,6
166,3
218,3
340,3
490,5
589,1
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Technical manual
Oil and sand removal system (SDD)
(SDD
Figure 1 : Components of SDD type
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Technical manual
Oil and sand removal system (SDD)
Figure 2 : Maintenance Inspection – step 1
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Technical manual
Oil and sand removal system (SDD)
(SDD
Figure 3 : Maintenance Inspection – step 2
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