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Who we are
What we do
Projects
Products
Career
Contact

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Who we are

Anchored in Switzerland and internationally active, WALO is managed as a family business in the 4th and 5th generation. For over 100 years, WALO has focused on the combination of consistency and innovation.

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What we do

WALO is active as an innovative total solutions company in all markets of the construction industry. The family-owned company has established itself as a reliable partner in the construction industry and infrastructure projects in Switzerland and worldwide with its decades of experience and the permanent development of sustainable as well as economical solutions.

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Projects

We have successfully implemented many challenging projects. Therefore, we proudly let our references speak for our work.

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Products

Whether residential, industrial, healthcare, outdoor or for sports and leisure facilities - seamless floor coverings have to meet a wide variety of requirements on a permanent basis.

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Career

Good buildings and thus satisfied customers require precise construction work. All our employees, from unskilled workers to engineers, play a key role in ensuring that we achieve this goal time and time again.

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Locations

With our locations in three countries, we are successfully active for you worldwide.

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Kölliken hazardous waste landfill

For the overall remediation of the Kölliken/AG hazardous waste landfill, SMDK decided to dismantle the hazardous waste stored in the years 1978-1985 under the protection of an airtight steel construction hall and to dispose of it in compliance with the law.

Project description

For the overall remediation of the Kölliken/AG hazardous waste landfill, the SMDK decided to dismantle the hazardous waste stored between 1978 and 1985 under the protection of an airtight steel construction hall and to dispose of it in compliance with the law. Based on the new concept of a large-scale, column-free excavation hall, the Phoenix consortium opted for a two-dimensional, layer-by-layer dismantling of the landfill instead of the vertical dismantling initially planned. High embankments and the associated risks are eliminated. The landfill is removed in layers from top to bottom. Among other things, this has the advantage that the material can already be sampled and triaged according to various categories before it is removed.

Internal safety technology: The dismantling work is carried out with special equipment and machines in which the operating personnel work in airtight cabins with fresh air supply. Access to and exit from the cabins is via docking stations directly from the uncontaminated zone, the so-called white area.

Dismantling and transport routes: The material is conveyed from the excavation hall to the manipulation hall or to the storage hall on three hall-internal deconstruction and transport routes and then packed.

Special features

Recycling: The selected variant further provides for more material to be recycled, for example to the ESAR soil washing plant in Rümlang, slag recycling or thermal soil treatment plants in Switzerland and abroad. The material is definitively processed or stored in compliance with the law at disposal facilities throughout Europe.