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Updated irreducible concentrations in StormTac database and in StormTac Web

  • 27 November, 20208 September, 2021

The values affect the maximum treatment effect that can be achieved by stopping the treatment when these minimum concentrations are reached. The difficulty in achieving lower concentrations is due to e.g. the decomposition of plants, sedimentation due to high flows and that vegetation beds (soil) and filters contain materials that can leak nutrients and pollutants. You can test different facilities and combinations of facilities with different irreducible concentrations if lower outlet concentrations are required.

The update is a result of a comprehensive investigation and literature review with new outlet concentrations and a comparative analysis of minimum outlet concentrations from similar types of facilities.

Completed database with updated stormwater concentrations during different seasons and months
Distribution of responsibilities – Distributed acceptable loads and required treatment between stakeholders within the catchment

Recent Posts

  • New function for import – From SCALGO Live to StormTac Web 22 September, 2023
  • Improved calculation of sediment growth and maintenance frequency in wet ponds and underground basins 1 September, 2023
  • Implemented improved method for calculated uncertainties specific to all substances with direct link to the StormTac Database 2 June, 2023
  • New article: Methods for Calculation of Stormwater Treatment Required for Meeting Receiving Waters Quality: Application in a Case Study 28 November, 2022
  • Updated design runoff coefficients 24 July, 2022
  • Updated typical concentrations for stormwater per land use, as a result of the updated database 28 June, 2022

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recipient stormwater model dimensionering dagvatten

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