- Completed
- 2020
- Architecture
- UNGER ingenieure Ingenieurgesellschaft mbH, Darmstadt, DE
- Specialised trade
- Wayss & Freytag Ingenieurbau AG, Frankfurt, DE
- Building owners
- Kommunalwirtschaft Mittlere Bergstraße, Bensheim, DE
- Sto proficiency
- StoCrete TG 252, StoCrete TS 250, StoCrete TF 250, StoCrete TH 250, StoCrete TK, StoCrete FB
- Photos
- © Thomas Neu und © StoCretec
Bio P Basin, Bensheim: StoConcrete Repair Resist and StoConcrete Protect Elastic FB
The Bensheim (Germany) group sewage treatment plant was put into operation in 1974 and has been subject to a continuous process of modernisation, expansion and conversion since then. The focus is set on the target of enabling a biological process for nitrogen and phosphate degradation. At the end of 2020, the plant's Bio P clarifier basins were refurbished.
"In a Bio P clarifier basin, phosphates are removed from the water by means of biological phosphorus elimination. In the past, phosphorus mainly got into the wastewater through cleaning agents before the phosphate content was restricted by law." (Source: www.kmb-bensheim.de/reisedurch-das-klaerwerk/)
Bio P basins such as those at the Bensheim municipal sewage treatment plant are constantly exposed to chemical attacks. To repair and protect such water-contacting components, mortar systems are required that are characterised by excellent resistance to sulphuric acid, ammonium and sulphate-containing water.
Mortar System Solutions for Exposition Classes XWW1-3
StoCretec mortar systems are tested and precisely coordinated. They have an optimised mortar structure because of their special formulation. In combination with a highly resistant special cement as a binding agent, the concrete repair system is ideal for refurbishing concrete components in municipal sewage treatment plants due to its high chemical resistance.
The investors target is a long-term service life of his facility. The basins’ crests therefore received an additional mineral coating with StoCrete FB.
The proven surface protection system prevents water and the pollutants dissolved in water, as well as carbon dioxide, from penetrating the concrete. Chloride and carbonation-induced corrosion of the steel reinforcement is prevented. Surfaces coated with StoCrete FB are much less prone to soiling and they are easier to clean. The labour-intensive cleaning effort is significantly reduced.
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