Application

Vacuum pumps for vacuum sewerage

In a vacuum sewerage system, negative pressure conveys the wastewater through a pipe network to the vacuum station – according to Atlas Copco without a gradient, at 250–400 mbar. Busch names the same technology as a vacuum supply and disposal system for wastewater in trains and ships, Leybold lists vacuum toilets. Below you can see how the application works, what vacuum the manufacturers name and which of their series are intended for it – 182 models from 4 manufacturers.

Compare 182 modelsHow it works

  • 182Models
  • 10Series
  • 4Manufacturers
  • 250–400 mbarvacuum in the sewer system (Atlas Copco)
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Touch the points: each part of the system explains itself.

In short

Vacuum sewerage: the key facts

  • Without a gradientAtlas Copco describes vacuum sewerage like this: negative pressure conveys the wastewater to the vacuum station without a gradient. The pipes therefore need no gradient, unlike a gravity sewer.
  • 250–400 mbarFor vacuum sewerage, Atlas Copco names 250–400 mbar and the series GHS VSD+ and DZS for it.
  • Trains and shipsBusch names vacuum supply and disposal systems for wastewater in trains and ships with the series MINK, R5, SECO and TYR; the Busch product finder lists the same series for vacuum sewerage.
  • ManufacturersAtlas Copco, Becker, Busch, Edwards and Leybold list the application; Leybold names NOVADRY for vacuum toilets, Edwards its liquid ring series LR1A, LR1C and LR1D for water and wastewater, and Becker names negative pressure for vacuum sewerage without a series.
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  • Air and gas (vacuum)
  • Exhaust

Operating principle

How it works: Vacuum sewerage

The drawing shows the basic principle in section. The systems and pumps of the individual manufacturers differ in detail.

  1. CollectionThe wastewater collects in the collection chamber of the building connection. When it reaches the set level, the vacuum valve opens.
  2. ConveyingThe negative pressure in the pipe network draws wastewater and air to the vacuum station. Atlas Copco describes this as conveying without a gradient at 250–400 mbar.
  3. HoldingThe vacuum pumps maintain the negative pressure in the collection tank, and the collected wastewater is pumped on. The control system switches the pumps on and off according to the pressure.

Vacuum and sizing

Vacuum sewerage: how much vacuum is needed

What the manufacturers say about pressure, pumping speed and sizing.

Which vacuum

For vacuum sewerage, Atlas Copco names 250–400 mbar. The size of the vacuum station depends on the number of connections and the length of the pipe network.

Which pumps

Atlas Copco names GHS VSD+ (screw vacuum pumps) and DZS (claw vacuum pumps), Busch MINK (claw), R5 (oil-lubricated rotary vane), SECO (dry-running rotary vane) and TYR (rotary lobe blowers), Edwards the liquid ring series LR1A, LR1C and LR1D, Leybold NOVADRY (screw vacuum pumps) for vacuum toilets.

Where it is used

Atlas Copco and Becker name vacuum sewerage in wastewater technology, Busch as a vacuum supply and disposal system for wastewater in trains and ships, Edwards under water, wastewater and water treatment, Leybold as vacuum toilets.

What the manufacturers point out

Atlas Copco emphasises that the negative pressure conveys the wastewater without a gradient. Becker and Leybold only list the application without describing it; Edwards names it on the page of its claw vacuum pumps and of its liquid ring series without a description.

Technology

Vacuum sewerage: the vacuum pumps the manufacturers name

Listed are the series the manufacturer itself names for this application. “Show only …” sets the filter of the product overview.

Becker names the application without naming a series for it.

Product overview

Vacuum sewerage: all 182 models compared

Use the filters on the left to narrow the selection – by manufacturer, technology and the models’ key figures, for 50 or 60 Hz.

Atlas Copco DZS series 8 models

DZS 065APumping speed 65 m³/h 50 Hz78 m³/h 60 HzUltimate pressure 50 mbarRated motor power 1.8 kW 50 Hz2.2 kW 60 HzVariants 12
DZS 065APPumping speed 65 m³/h 50 Hz78 m³/h 60 HzUltimate pressure Rated motor power 3.7 kW 50 Hz3.7 kW 60 HzVariants 5
DZS 150APumping speed 150 m³/h 50 Hz180 m³/h 60 HzUltimate pressure 50 mbarRated motor power 3.7 kW 50 Hz3.7 kW 60 HzVariants 12
DZS 150APPumping speed 150 m³/h 50 Hz180 m³/h 60 HzUltimate pressure Rated motor power 11 kW 50 Hz15 kW 60 HzVariants 6
DZS 300APPumping speed 238 m³/h 50 Hz280 m³/h 60 HzUltimate pressure Rated motor power 19 kW 50 Hz22 kW 60 HzVariants 6
DZS 300APumping speed 300 m³/h 50 Hz360 m³/h 60 HzUltimate pressure 140 – 200 mbarRated motor power 6.2 kW 50 Hz7.5 kW 60 HzVariants 12
DZS 500 VPumping speed 500 m³/h 50 Hz600 m³/h 60 HzUltimate pressure 200 mbarRated motor power 9.2 kW 50 Hz11 kW 60 HzVariants 8
DZS 1000 VPumping speed 950 m³/h 50 Hz1,140 m³/h 60 HzUltimate pressure 200 mbarRated motor power 18.5 kW 50 Hz22 kW 60 HzVariants 8

Atlas Copco GHS VSD+ series 21 models

GHS 350 VSD+Pumping speed 400 m³/h 50 Hz400 m³/h 60 HzUltimate pressure 0.35 mbarRated motor power 5.5 kW 50 Hz5.5 kW 60 HzVariants 29
GHS 402 VSD+Pumping speed 467 m³/h 50 Hz467 m³/h 60 HzUltimate pressure 0.35 mbarRated motor power 5.5 – 7.5 kW 50 Hz5.5 – 7.5 kW 60 HzVariants 4
GHS 585 VSD+Pumping speed 560 m³/h 50 Hz560 m³/h 60 HzUltimate pressure 0.35 mbarRated motor power 7.5 kW 50 Hz7.5 kW 60 HzVariants 30
GHS 602 VSD+Pumping speed 640 m³/h 50 Hz640 m³/h 60 HzUltimate pressure 0.35 mbarRated motor power 7.5 – 11 kW 50 Hz7.5 – 11 kW 60 HzVariants 4
GHS 730 VSD+Pumping speed 730 m³/h 50 Hz730 m³/h 60 HzUltimate pressure 0.35 mbarRated motor power 11 kW 50 Hz11 kW 60 HzVariants 30
GHS 752 VSD+Pumping speed 805 m³/h 50 Hz805 m³/h 60 HzUltimate pressure 0.35 mbarRated motor power 11 – 15 kW 50 Hz11 – 15 kW 60 HzVariants 4
GHS 900 VSD+Pumping speed 870 m³/h 50 Hz870 m³/h 60 HzUltimate pressure 0.35 mbarRated motor power 15 kW 50 Hz15 kW 60 HzVariants 32
GHS 902 VSD+Pumping speed 917 m³/h 50 Hz917 m³/h 60 HzUltimate pressure 0.35 mbarRated motor power 15 – 18.5 kW 50 Hz15 – 18.5 kW 60 HzVariants 4
GHS 1002 VSD+Pumping speed 1,039 m³/h 50 Hz1,039 m³/h 60 HzUltimate pressure 0.35 mbarRated motor power 18.5 kW 50 Hz18.5 kW 60 HzVariants
GHS 1202 VSD+Pumping speed 1,172 m³/h 50 Hz1,172 m³/h 60 HzUltimate pressure 0.3 mbarRated motor power 18.5 kW 50 Hz18.5 kW 60 HzVariants 9
GHS 1300 VSD+Pumping speed 1,250 – 1,615 m³/h 50 Hz1,250 – 1,615 m³/h 60 HzUltimate pressure 0.35 mbarRated motor power 18 – 22 kW 50 Hz18 – 22 kW 60 HzVariants 33
GHS 1402 VSD+Pumping speed 1,383 m³/h 50 Hz1,383 m³/h 60 HzUltimate pressure 0.3 mbarRated motor power 22 kW 50 Hz22 kW 60 HzVariants 9
GHS 1602 VSD+Pumping speed 1,581 m³/h 50 Hz1,581 m³/h 60 HzUltimate pressure 0.3 mbarRated motor power 30 kW 50 Hz30 kW 60 HzVariants 9
GHS 1600 VSD+Pumping speed 1,590 – 1,811 m³/h 50 Hz1,590 – 1,811 m³/h 60 HzUltimate pressure 0.35 mbarRated motor power 28 – 30 kW 50 Hz28 – 30 kW 60 HzVariants 33
GHS 2002 VSD+Pumping speed 1,771 m³/h 50 Hz1,771 m³/h 60 HzUltimate pressure 0.3 mbarRated motor power 37 kW 50 Hz37 kW 60 HzVariants 9
GHS 1900 VSD+Pumping speed 1,810 m³/h 50 Hz1,810 m³/h 60 HzUltimate pressure 0.35 mbarRated motor power 37 kW 50 Hz37 kW 60 HzVariants 21

Busch MINK series 32 models

Busch R5 series 58 models

Busch SECO series 10 models

Busch TYR series 16 models

Edwards LR1A series 12 models

Edwards LR1C series 9 models

Edwards LR1D series 12 models

Leybold NOVADRY series 4 models

Model comparison

Models a manufacturer no longer carries in its current range are listed in its “Outdated models” section.

Industries

Vacuum sewerage: where the manufacturers name it

The manufacturers list these uses on their own pages.

Environmental and wastewater

Atlas Copco (GHS VSD+, DZS; 250–400 mbar, conveying without a gradient), Becker (without a series), Busch (MINK, R5, SECO, TYR) and Leybold (NOVADRY for vacuum toilets) name vacuum sewerage in environmental and wastewater technology.

Industry page: Environmental and wastewater →

Automotive and transport

For automotive and transport, Busch names vacuum supply and disposal systems that remove wastewater in trains and ships by negative pressure, with the series MINK, R5, SECO and TYR.

Industry page: Automotive and transport →

Frequently asked questions

Vacuum sewerage: frequently asked questions

How does a vacuum sewerage system work?

The wastewater flows into collection chambers at the building connections. When the vacuum valve opens, the negative pressure in the pipe network draws wastewater and air to the vacuum station, where the wastewater collects in a tank and is pumped on. Atlas Copco describes it like this: negative pressure conveys wastewater to the vacuum station without a gradient.

How much vacuum does a vacuum sewerage system need?

For vacuum sewerage, Atlas Copco names 250–400 mbar.

Which vacuum pump is suitable for vacuum sewerage?

Atlas Copco names GHS VSD+ and DZS, Busch MINK, R5, SECO and TYR, Edwards its liquid ring series LR1A, LR1C and LR1D for water and wastewater, Leybold NOVADRY for vacuum toilets. Becker names negative pressure for vacuum sewerage without naming a series.

Why vacuum sewerage instead of a gravity sewer?

According to Atlas Copco, the negative pressure conveys the wastewater to the vacuum station without a gradient. The pipes therefore do not have to be laid with a gradient, as a gravity sewer requires.

Oil-free or oil-lubricated for vacuum sewerage?

Both are named. Dry-running pumps are the claw vacuum pumps DZS (Atlas Copco) and MINK (Busch), the dry-running rotary vane vacuum pumps SECO and the rotary lobe blowers TYR (Busch) and the screw vacuum pumps NOVADRY (Leybold); oil-lubricated pumps are R5 (Busch, rotary vane) and GHS VSD+ (Atlas Copco, screw). Edwards names liquid ring vacuum pumps with water as the operating liquid (LR1A, LR1C, LR1D).

Which vacuum pump for vacuum toilets in trains and ships?

For wastewater in trains and ships, Busch names its vacuum supply and disposal systems with the series MINK, R5, SECO and TYR. Leybold lists vacuum toilets for its NOVADRY series without describing the application.

Which manufacturers name vacuum sewerage?

It is named by Atlas Copco (with 250–400 mbar and the series GHS VSD+ and DZS), Busch (MINK, R5, SECO, TYR), Edwards (LR1A, LR1C, LR1D), Leybold (NOVADRY, vacuum toilets) and Becker, which lists the application without a series.

What does the vacuum station do in a vacuum sewerage system?

The vacuum station maintains the negative pressure in the pipe network and receives the wastewater in the collection tank, from which it is pumped on to the sewage treatment plant. The control system switches its vacuum pumps on and off according to the pressure in the tank. Atlas Copco names 250–400 mbar for the negative pressure.

What if moisture or wastewater travels towards the vacuum pump?

Between the collection tank and the pumps there is a filter that retains particles and moisture; the pumps draw in only air. For water and wastewater, Edwards names its liquid ring series LR1A, LR1C and LR1D, which work with water as the operating liquid.

A single pump or a central vacuum system?

A central system in a room of its own keeps noise and heat away from production and matches its output to the demand. Central vacuum systems are planned and built by Eugen Theis Vakuum, a company of the Ehrler & Beck group – more under Central Vacuum.

Does Ehrler & Beck also supply spare parts and service?

Yes. Ehrler & Beck offers original spare parts and accessories as well as maintenance and repair.

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