Folie 1
BG, Sofia Nov 2016Roediger Vacuum Sewer SystemsTechnical
introduction, Benefits, Limitations
ContentRoediger Vacuum sewer systems | 9/7/20161Vacuum Sewer
Systems are 2Vacuum Sewer System how does it work?3Components of
Vacuum Sewer Systems
Page 2
Our Technology What are Vacuum Sewer SystemsVacuum sewer systems
are
Collection Systems for domestic waste water
Easy to install systems for waste water within low and medium
dense residential, industrial, commercial or mixed use areas
State-of-the-art technology, eco-friendly, safe and operator
friendly systems
Alternatives for conventional gravity sewer systems under
difficult conditions
Vacuum sewer systems are NOT
Transportation systems for waste water (pumping station
replacement)
Main collectors for large sewer systems
Collection systems for storm water (mixed systems)
Roediger Vacuum sewer systems | 9/7/2016Page 3
Our Technology How does it work?Roediger Vacuum sewer systems |
9/7/2016
Page 4
Seite 4
Our Technology How does it work?Functional descriptionRoediger
Vacuum sewer systems | 9/7/2016Gravity sewer pipingManholes Lifting
stations
Vacuum sewer pipingSlope min. 0.2%L = typical ~100m
Roediger inspection pipes
Page 5
The conventional wayDeep excavation in sandy or rocky
groundsRoediger Vacuum sewer systems | 9/7/2016
Page 6
The conventional wayRoediger Vacuum sewer systems | 9/7/2016
Page 7
Vacuum advantages constructionRoediger Vacuum sewer systems |
9/7/2016
Page 8
Vacuum advantages constructionGravity Sewer SystemWide and deep
trenches Average installation depth of 38 mor much moreLarge pipe
diameters (200-1200 mm)Ceramic or concrete pipes Heavy machinery
required Manholes and lift stations required along linesVacuum
Sewer SystemSmall and shallow trenchesAverage installation depth of
only 1.0 - 1.2 mSmall pipe diameter (90 - 250 mm)Easy to install,
durable HDPE or PVC pipesSimple or even no machinery for
excavationNo manholes, no lift stations
Roediger Vacuum sewer systems | 9/7/2016
Gravitysewersystem
Vacuum sewersystem
Page 9
Vacuum advantages constructionLess impact on the trafficRoediger
Vacuum System: Little impact on local trafficSmall pipes and
trenches
Roediger Vacuum sewer systems | 9/7/2016
Page 10
Vacuum advantages constructionSmall pipes, flexible
installationShallow and small trenchesNo manholes, no lift
stationsCentralized vacuum station instead of many lift
stationsSaving of construction timeSaving of construction and
operation costs
Roediger Vacuum sewer systems | 9/7/2016
Vacuum sewer system Gravity sewer system Page 11
Vacuum advantages constructionFlexibility during construction
progress Even unexpected obstacles discovered during construction
works can easily be bypassed by a modified and more flexible vacuum
sewer pipe laying
Roediger Vacuum sewer systems | 9/7/2016
Obstacles may easily crossed over or belowPage 12
Vacuum advantages sustainable solution for a green future - no
exfiltration possible!Roediger Vacuum sewer systems | 9/7/2016Due
to the pressure gradient there will be no exfiltration in vacuum
sewerage systems. Flexible PVC/ HDPE pipes guarantee a tight pipe
network with long-term lifetime cycles!
No contamination of groundwater!
Page 13
Vacuum advantages sustainable solution for a green future - same
trenchFresh water pipes and irrigation pipes can be installed
together in ONE trench with the vacuum sewer pipe!
Roediger Vacuum sewer systems | 9/7/2016
The fresh water pipeline must be installed in a separate trench
and on a higher level than the sewer pipe.
It is possible and allowed to install both, the potable water
pipe as well as the vacuum sewer pipe, within one single
trench.
Page 14
Vacuum advantages sustainable solution for a green future - no
undetected infiltration possible!Roediger Vacuum sewer systems |
9/7/2016
In a Roediger vacuum sewer system any leakage will be identified
immediately through an extended pump-run time. Consequently there
will be no undetected infiltration of rain-/storm- or groundwater
into the sewage pipe network, diluting the biological condition of
the Sewerage Treatment Plant (STP). Knowing that STPs are
responsible for up to 40% of the energy consumption of small
communities, the pressing question is: Why spending money for
treating just little polluted rain water?
No contamination of groundwater!
Page 15
Roediger Vacuum sewer systems | 9/7/2016100% design peak
flow
or
< 10 % design peak flowGravityVacuum advantages
operationTolerating fluctuating flows Self cleaning systemHigh
velocities (4-6 m/s)No sedimentation even during low flow
periodsSuitable for holiday resorts, demographic change
Page 16
Roediger Vacuum sewer systems | 9/7/2016
Summary of advantages Closed system: no leakage, no
exfiltration, no odour No manholes; no rubbish into sewer No
sedimentation due to high velocity in the sewer pipes; no flushing
required Tolerating fluctuating flows Flexible system; easy design
adaption of profiles during construction phase Only one central
vacuum station: no further lifting stations required No electrical
connections except at the central vacuum station Small diameter
pipes (d90 to d250); HDPE (SDR11) or PVC (PN10) Shallow, fast and
easy trenching (cost savings) Reduced O&M equipment /cost
Reduced H2S and other fouling gasesPage 17
Components of vacuum sewer systemsMain componentsRoediger Vacuum
sewer systems | 9/7/2016Central vacuum stationCollection chambers
(with valves)Vacuum pipe networkPage 18
CollectionChamberVacuum StationVacuum PipeNetwork
CollectionChamberVacuum StationVacuum PipeNetwork
Components of vacuum sewer systemsVacuum pipe networkRoediger
Vacuum sewer systems | 9/7/2016
The saw-tooth profile state of the artAir based transport of
sewageAdvantagesShallow trenches, small pipe diametersHigh
velocities, no sedimentation
Vacuum pipeslocal: HDPE SDR 11 / PVC PN 10, SDR 21Vacuum network
fittingsour product special vacuum fittings
Page 19
Areas of applicationFlat areasRural areas / low population
densityWater protection / catchment areas Nature
reservesTide-influenced / flood zonesShores / coastlines / islands
Marinas / jetty projectsWater villas / beach resortsHigh ground
water tableMaterial flow separationObstacles in the groundAreas
with seasonal occupationConnection of low-lying settlementsIn case
monitoring is neededBad soil conditions (rocky / sandy soil,
avoiding deep excavation, swamps)Minimum construction impact
(traffic, historic buildings, narrow streets)
Roediger Vacuum sewer systems | 9/7/2016
Page 20
Cost comparisonRoediger Vacuum sewer systems | 9/7/2016Page
21
Investment costs (CAPEX) of gravity and vacuum systemPage 22
ConditionsCosts
In areas suitable for vacuum investment costs for gravity sewers
are rising - each new difficulty is reflected in moneyGravity
system costsVacuum system costsHeavy machineryDeeper trenchesLarger
pipe diametersHigh ground water tableUnstable / rocky
undergroundLow population densityAdd. pumping stationsAdd. flushing
water Roediger vacuum sewer system cost comparison | 9/7/2016
Example 1:Area with a high population densityGravity vs vacuum
investment costs | 14.11.2016 Page 23
VS2.000 PE500 m500 m
Example 1:Area with a high population density - costsVacuum
costs:Pipes: 2.000 m x 50 /m=100.000 Collection chambers:100 CC x
2.000 =200.000 Vacuum station:=200.000 Total:500.000 Gravity
costs:Pipes:2.000 m x 100 /m=200.000 Manholes: 40 x 300 = 12.000
Pump station: 1 x 50.000 = 50.000 Total:262.000
Gravity vs vacuum investment costs | 14.11.2016 Page 24
Example 2:Area with a low population densityGravity vs vacuum
investment costs | 14.11.2016 Page 25
2.000 PE2.000 m3.000 mVS40 PE
Example 2:Area with a low population densityVacuum costs:Pipes:
10.000 m x 50 /m= 500.000 Collection chambers: 130 CC x 2.000 =
260.000 Vacuum station:= 200.000 Total: 960.000
Gravity costs:Pipes:10.000 m x 100 /m=1.000.000 Manholes: 200 x
300 = 60.000 Pump stations: 4 x 50.000 = 200.000
Total:1.260.000
Gravity vs vacuum investment costs | 14.11.2016 Page 26 - 30
%
Example 3:Sample project in the Middle EastGravity sewer system
vs. vacuum sewer systemWhy vacuum?FlatSandyCoastal area7.500 PE
Gravity vs vacuum investment costs | 14.11.2016 Page 27
Example 3:Investment costs of a vacuum sewer systemGravity vs
vacuum investment costs | 14.11.2016 Page 28Vacuum sewer lines PVC
(d. & i.)511.225 Inspections pipes and division valves38.735
Collection chambers (d. & i.)(350 pcs. G65 2.5" passenger load
+ service connections)652.000 (536.000 BWT)Vacuum station with one
bio filter (d. & i.)356.000 (268.000 BWT)Customs and transport
for the Vacuum station + collection chambers92.000
TOTAL1.661.961
Length of the lines: app. 19.000 mGravity sewer lines (d. &
i.)1.584.310 Manholes (d. & i.)1.010.054 Five pumping station
(concrete and structure, pumps)(d. & i.), estimated159.950 Bio
filters (115 pcs)50.008 TOTAL2.804.322
Length of the lines: app. 18.000 mVacuum:Gravity:Altogether
Advantage Vacuum: 40%
Example 4:Sample Project in East EuropeGravity sewer system vs.
vacuum sewer systemGravity vs vacuum investment costs | 14.11.2016
Page 29No.MaterialGravity systemBilfinger Water
TechnologiesDifference(+/-)ObservationsQuantityUnit price ()Value
()QuantityUnit price ()Value ()1.Sewerage pipe corrugated SN8, Dn
250 mm15.000 m9,5142.500000Prices ECENov. 2011Mounting price 50.000
2.Sewerage pipe corrugated SN8, Dn 315 mm9.000
m12,8115.2000003.PEHD pipe SDR 11, De = 90 mm0005.600
m4,726.320Prices POLITUB BistriaJanuary 2012Mounting price 75.000
(Including fittings)4.PEHD pipe SDR 11, De = 110 mm0008.500
m6,958.6505.PEHD pipe SDR 11, De = 125 mm0002.200 m8,919.5806.PEHD
pipe SDR 11, De = 140 mm0001.100 m11,112.2107.PEHD pipe SDR 11, De
= 160 mm0002.500 m14,536.2508.PEHD pipe SDR 11, De = 200 mm0003.600
m22,781.7209.Pumping stations completely mounted3
pcs80.000240.000000Price S.P. ISPANote: in the gravity system the
wall support and dewatering works in trenches deeper than 3 m are
not included.
The rebuilding costs for the roads where collectors are
installed under the street, were not taken into consideration in
the gravity cost estimate.10.Collection chambers (connection
chambers)480 pcs.1.200576.000220 pcs.2.000440.000Prices Bilfinger
WT January 201211.Vacuum station0001 pc.197.000197.00012.Monitoring
system0001 pc.92.00092.00013.Special fittings0001
set252.000252.00014.Air admittance stations0006
pc.10.00060.00015.Buffer tank0003 pc.10.00030.00016.Vacuum
building0001 pc.35.00035.00017.Excavations + filling +
compacting50.000 m18,15907.500 10.000 m12,45124.500 Prices Steel
MarketTOTAL C+M (including mounting) 2.031.200 1.428.230 602.970
VIVacuum < VIGravit. approx. 30 %
Aqseptence Group GmbHVacuum Sewerage & Recovery
SystemsKinzigheimer Weg 104-10663450 Hanau / Germany
Telephone +49 (6181)
[email protected]
