Предимствата на вакуумни канализационни системи 2
TRANSCRIPT
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Operation and maintenanceVacuum vs. gravityBG, Sofia Nov 2016
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Vacuum sewer systemsOperation and maintenance
Operation and maintenance | 05/01/2023 Page 2
The myth: no maintenance in gravity systems
The truth: a whole industry is built on cleaning and repairing gravity systems
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Vacuum sewer systemsOperation and maintenance
The truth:
Operation and maintenance | 05/01/2023 Page 3
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Vacuum sewer systemsOperation and maintenance
The myth: no maintenance in gravity systems
So, let us speak about it!
Operation and maintenance | 05/01/2023 Page 4
The truth:
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Vacuum sewer systemsOperation and maintenance
Roediger® vacuum systemsLabour▪ Regular check of collection chambers▪ Regular check of vacuum station
Replacement/repair▪ Annual service of the vacuum station▪ Controllers (app. every 10 years) replacement▪ Valve membrane (app. every 5 years) replacement
Gravity systemsLabour▪ Regular check of manholes▪ Pipeline inspection, CCTV inspections▪ Cleaning accumulated sludge, slime and debris
(jetting with high-pressure)▪ Flushing
Replacement/repair▪ Service of all discharging pumps from pump- and
lifting stations▪ Rehabilitation of gravity sewers▪ Rehabilitation of manholes
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Vacuum sewer systemsOperation and maintenance
Roediger® vacuum systemsElectricity consumption▪ Vacuum pumps (approx.15-25 kWh/PE/year)▪ Discharging pumps (2 pieces)
Network maintenance:▪ No maintenance, vacuum network is self-cleansing
Sewage treatment:▪ Handle only wastewater▪ Handle aerated waste water ▪ Closed system - handle only communal
wastewater
Gravity systemsElectricity consumption▪ Discharging pumps of all lift- and pump stations
Cleaning the system:▪ H2S deodorization
▪ Cleaning of sedimentation ▪ Flushing, spooling the system
Water treatment:▪ Handle big amount of infiltrated ground water▪ Handle aged and possibly septic wastewater▪ Handle wastewater from unsure source
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Vacuum sewer systemsOperation safety
Roediger® vacuum systems
Safety operation!
Gravity systems
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Vacuum sewer systemsOperation safety
Roediger® vacuum systemsOperation safety▪ No operational risks to operators▪ All equipment can be accessed from the ground
level▪ No direct contact with wastewater ▪ No climbing into manholes or confined spaces
required
Gravity systemsAtmospheric hazards in confined spaces:▪ Low oxygen (two men required)▪ Hydrogen sulphide (corrosion)▪ Explosive concentrations of methane
Physical hazards with confined space entry▪ Objects falling onto operators
Biological hazards:▪ Germs and diseases▪ Viruses▪ Pathogenic organisms
Insects, animals
Bad smell
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Vacuum sewer systemsOperation costs
Operation and maintenance | 05/01/2023 Page 9
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Vacuum sewer systemsMaintenance costs
Operation and maintenance | 05/01/2023 Page 10
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Vacuum sewer systemsOperation costs
Operation and maintenance | 05/01/2023 Page 11
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Vacuum sewer systemsMaintenance costs
Operation and maintenance | 05/01/2023 Page 12
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Vacuum sewer systemsOperation and maintenance
Wishful thinking: System with no maintenance
Reality: Every system needs maintenance
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Aqseptence Group GmbHVacuum Sewerage & Recovery SystemsKinzigheimer Weg 104-10663450 Hanau / Germany
Telephone +49 (6181) [email protected]