Publications in Scientific Journals:
J. Tauber, B. Flesch, V. Parravicini, K. Svardal, J. Krampe:
"Influence of road salt thawing peaks on the inflow composition and activated sludge properties in municipal wastewater treatment";
Water Science and Technology,
84
(2021),
2;
314
- 322.
English abstract:
Operational data over 2 years from three large Austrian wastewater treatment plants (WWTPs) with design capacities of 4 million, 950,000 and 110,000 population equivalent (PE) were examined. Salt peaks, due to thawing road salt were detected and quantified by electrical conductivity, temperature and chloride measurement in the inflow of the WWTPs. Daily NaCl inflow loads up to 1,147 t/d and PE-specific loads of 0.26-0.5 kg NaCl/(PE · y) were found. To mimic the plantsī behaviour in a controlled environment, NaCl was dosed into the inflow of a laboratory-scale activated sludge plant.
Keywords:
activated sludge, NaCl shock loading, oxygen uptake rate, particle size, sludge volume index
"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
http://dx.doi.org/10.2166/wst.2021.045
Created from the Publication Database of the Vienna University of Technology.