
60 m³/day
Water treatment capacity
FBB Frischbeton AG Bäretswil operates a local plant producing ready-mixed concrete and processing crushed stone and gravel, located in Bäretswil, in the Canton of Zurich, Switzerland. It is part of the long-established Swiss group FBB Unternehmungen, active in construction, recycling and transport since 1927. Its activities range from ready-mixed concrete production and the operation of sand and gravel quarries to supply and logistics for construction sites across the region.


Intensive concrete production generates significant volumes of wastewater from daily mixer-truck washing.

pH neutralisation of excess water before discharge.

Automated control of the water-treatment process.

Automatic pipe-purging and cloth-washing system, with dedicated operating programmes for concrete-wastewater treatment.
Treated-water recovery for reuse in the production process.
Dewatering of the residual sludge from mixer-truck washing, reducing the volume requiring disposal.
Reduced filter-cloth wear through controlled filter-press operation and cleaning cycles.

For many years we have delivered demanding projects with metcam and Tecnoidea Impianti. I appreciate that they always meet deadlines and budgets (...). The individual components stand out for their solid, high-quality construction. This gives us confidence that the plant will remain reliable for many years.<br /> <br />
Markus Kiser, Project manager