Wastewater
Norbert Scheed, Mag. Ulli Sima, DI Peter Ruso, Rosemarie Effenberg (© C.Hahn)

Vienna Sewers again opt for No-Dig

After completing the tunnelling operations for the gigantic Wiental Sewer project (diameter: 8 m, holding capacity: approximately 110,000 m3 of combined sewage), the Austrian capital now spends another € 10.3 million on the construction of a new sewage co

llector, the 3.2-km-long Breitenleer Sewer, in the city’s north-east.

Today, 99 percent of Viennese households are already connected to the public sewer system (an absolute peak by international standards), and the new project adds another 800 households. The new sewer, with an inner tunnel diameter of 1.8 m, is constructed at a depth of 2 – 6.5 m largely by using the microtunneling technique.

Peter Ruso, head of Municipal Department 30 (Vienna Sewers) and in charge of project coordination, describes the method: “The type of machine in use is a so-called earth pressure balance machine; as the cutter head forges its way through the ground, the loosened soil and rock is mixed with water into a muddy mass which is then extracted through a discharge line. At the same time, the resulting void is lined with sewer pipes made of reinforced steel, which are introduced into the launch shaft one by one and pushed ahead hydraulically.”

Technical aspects were only part of the reason for choosing this no-dig technique; what also tipped the scales was that only few excavations alongside a separate construction lane are required and that the burden of building operations on neighbourhood residents and local traffic can be kept to a minimum.

Ulli Sima, Vienna City Councillor for the Environment, is also delighted that after project completion in spring 2009 the new Breitenleer Sewer will serve a double purpose: it brings Vienna‘s sewer network one step closer to completion and the post-construction area (the construction lane) will be converted into a cycle track so that Vienna’s outermost city limits can then also be reached by bike.
(Source: aqua press Int. 1/2007)


The basis for prosperity and all other goals of the “EU Strategy for the Danube Region“ (EUSDR) is “Good Governance”. This concept not only comprises…

more

This year, we are awarding a AU$200,000 prize for outstanding achievements in sustainable river basin management.

more

The European Waste Water Management Conference is the UK's leading conference for wastewater professionals. Over 50 technical papers will be presented…

more

The Austrian Ministry of Environment has meanwhile received public feedback on the second implementation phase of the WFD in Austria. The following…

more

Especially so in the Danube River, as Austria's Infrastructure Minister Alois Stöger pointed out during the presentation of the integrated Danube…

more

In Austria, summertime is festival time. Besides classical concerts and theatre performances, there are also special awareness-raising events around…

more

These conflicting interests are also a concern for Franz Grabner, the new CEO of Pipelife Austria effective 1st July. In an interview with aqua press…

more

This prestigious global award of the International RiverFoundation (IRF) is bestowed in Brisbane in late September. The river restoration programme…

more

Thanks to the adoption of a new technology at LINZ AG Wasser in November, staff no longer has to work shifts and weekends and customers benefit from…

more

Today, it still takes a few days to analyse viruses, bacteria and parasites in drinking water. The transnational and interdisciplinary research…

more

Subscription and Media Data

You want to know the leading Austrian trade magazine ? You want to learn about release dates , priorities and advertising opportunities ?

Here you are right!

SubscriptioN | Abonnement

Media Data