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Environ Res

Title:		Impact of the excess sludge modification with selected chemical reagents on the increase of dissolved organic substances concentration compounds transformations in activated sludge
Author(s):		Zawieja I; Lidia W; Marta P;
Address:		"Czestochowa University of Technology, Faculty of Infrastructure and Environment, Institute of Environmental Engineering, Brzeznicka 60a, 42-200 Czestochowa, Poland. Electronic address: izawieja@is.pcz.czest.pl. Czestochowa University of Technology, Faculty of Infrastructure and Environment, Institute of Environmental Engineering, Brzeznicka 60a, 42-200 Czestochowa, Poland"
Journal Title:		Environ Res
Year:		2017
Volume:		20170505
Issue:
Page Number:		652 - 656
DOI:		10.1016/j.envres.2017.04.033
ISSN/ISBN:		1096-0953 (Electronic) 0013-9351 (Linking)
Abstract:		"Submission of excess sludge initial disintegration process significantly affects the efficiency of anaerobic stabilization process. Expression of increasing the concentration of organic matter in dissolved form is to increase sludge disintegration. As a result of chemical modification is an increase of the chemical oxygen demand and the concentration of volatile fatty acids. The aim of this study was to determine the impact of the disintegration process with selected chemical reagents to increase the concentration of organic substances in dissolved form. The process of chemical disintegration of excess sludge was treated using the following reagents: Mg(OH)(2), Ca(OH)(2), HCl, H(2)SO(4), H(2)O(2). The modification was carried out at ambient temperature for 2, 6 and 24h. During sludge disintegration it was noticed the growth of indicators values that confirmed the susceptibility of prepared sludge to biodegradation"
Keywords:		"Biological Oxygen Demand Analysis Calcium Hydroxide/chemistry Fatty Acids, Volatile/analysis Hydrochloric Acid/chemistry Hydrogen Peroxide/chemistry Magnesium Hydroxide/chemistry Oxidants/chemistry Sewage/analysis/*chemistry Sulfuric Acids/chemistry Waste;"
Notes:		"MedlineZawieja, Iwona Lidia, Wolny Marta, Proba eng Research Support, Non-U.S. Gov't Netherlands 2017/05/04 Environ Res. 2017 Jul; 156:652-656. doi: 10.1016/j.envres.2017.04.033. Epub 2017 May 5"