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Plenary 2: In-Sewer Processes 1 - H2S
9:10am - 9:30am
Hydrogen sulfide control in force mains by in-situ electrochemical generation of dissolved ferrous iron
1Department of the Built Environment, Aalborg University, Denmark; 2Department of Chemistry and Bioscience, Aalborg University, Denmark
In the present study, a method for sulfide control in sewer systems based on electrchemical oxidation of iron electrodes in the wastewater stream is presened. Both short term laboratory experiments and long term pilot scale experiments have been conducted. The experiments show that the electrochemical oxidation of iron electrodes produce ferrous iron at the anode, which effectively precipitates dissolved hydrogen sulfide. At the same time, alkalinity is generated at the cathode thereby increasing the efficiency of the precipitation process while at the same time making any remaining sulfide less volatile.
9:30am - 9:50am
Implementation of Sewer Ventilation and Process Modelling for Corrosion Control
1Jacobs, United States of America; 2The WATS Guys, United Stated of America; 3Aalborg University, Denmark
9:50am - 10:10am
Novel methodology for detecting blockages in waste water networks inspired by phase portrait principles
1University of Exeter, United Kingdom; 2Delft University of Technology, The Netherlands
- Presenting novel phase portrait methodology collecting evidence of waste water network blockages
- Novel methodology implemented on blockage case study made with Astlingen hydraulic model
- Integration of this method with control theory makes an automated blockage detection algorithm