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Case study: determine plant performance on Phosphorus removal

Case study: determine plant performance on Phosphorus removal

May 4, 2023

Using a Hach Phosphate online analyser, a water company was able to assess the capability of a wastewater treatment plant to remove phosphorus and to assist with informing future process design.

The instrumentation was provided for a three month trial in order to assess the accuracy and robustness of the analyser, increase its familiarity with operators and importantly to determine the P removal capability of the process stream up to an including the ASPs.

Conclusion of the study
  • The Hach Phosphax sc LR is a reliable and accurate instrument for the determination of orthophosphate in the range 0.015 – 2mg/l as P
  • The wastewater treatment plant was capable of regularly reducing ortho P concentrations to <0.5mg/l after the ASPs though careful management of the process. This was previously regarded as being in the range 0.6 – 3.3 mg/l as P
  • The trial has assisted the project team with the scoping of the minimum additional processes required to reduce ortho P concentrations to <0.25mg as P in the final effluent. This may allow significant cost savings for the water company involved

Read the full article in the Institute of Water Magazine spring edition.

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