A commentary on the respirometric evaluation of biodegradable cod fractions in industrial wastewater
Piotr Beńko
Czasopismo Techniczne, Volume 12 Year 2018 (115), 2018, s. 139 - 150
https://doi.org/10.4467/2353737XCT.18.184.9672This paper presents considerations on selected methodological aspects of respirometric COD fractionation in industrial wastewater which may differ from more common applications of such methodology for municipal wastewater. This concerns: the presence of interfering substances; problems with the elimination of nitrification; the importance of recognising biomass metabolism; differences of growth coefficient; the inclusion of non-canonical COD fractions and toxic effects. The discussion is based on a literature review and the authors’ own experience. As a conclusion, a preparatory procedure is proposed to assure the correct performance of respirometric COD fractionation for industrial wastewater, especially for more complex chemical effluents.
Piotr Beńko
Czasopismo Techniczne, Środowisko Zeszyt 1-Ś (20) 2014, 2014, s. 35 - 43
https://doi.org/10.4467/2353737XCT.14.325.3413The paper focuses on changes in water demand within the water supply zone in Krakow. The analyzed time periods include the 90s of the last century and the years 2007‒2012. Based on measurements of the size and variability of water demand, changes in daily water consumption within the week were analyzed and compared with the reference distribution. Both the results and research methodology can be used to update the guidelines for design and simulation of the water supply systems operation.