Senfter, T., Stern, B., Pillei, M., Senn, M., Berger, M., Kofler, T., Mayerl, C., Ehrensberger, C., & Kraxner, M. (2020). Feasibility Study for the Separation of Solid Particles from High-Pressure Water Jet Process Water with a Hydrocyclone. In C. Jordan (Ed.), Proceedings of the 16th Minisymposium Verfahrenstechnik and 7th Partikelforum (TU Wien, Sept. 21/22, 2020) (pp. DiP3-(07) page 1-DiP3-(07) page 4). chemical-engineering.at. https://doi.org/10.34726/589
solid-liquid separation; wastewater; hydrocyclone; tunneling; water jet cutting
en
Abstract:
On the tunneling site Perjen (Tyrol, Austria) thin concrete layers are removed by water jet cutting from the wall inside the tunnel. In this process, a daily volume of 5-10 m³ of wastewater is produced which is stored temporarily on-site and periodically taken away by a waste disposal company. In order to reduce disposal costs the reduction of the wastewater volume by mechanical treatment is required. Therefore, a hydrocyclone was tested on-site for evaluation purpose. The particle concentration in the underflow of the hydrocyclone is 32 % (average) higher than the inlet particle concentration, whereas the overflow concentration is 28 % (average) smaller than the inlet particle concentration. In conclusion, particle separation by a hydrocyclone is partly possible for the present wastewater.
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