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Sludge Disintegration using Fenton Treatment

Lim , Kai Xian (2014) Sludge Disintegration using Fenton Treatment. IRC, Universiti Teknologi PETRONAS. (Unpublished)

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Abstract

Activated sludge treatment has been widely applied to treat wastewater due to its advantages, including low running cost and high degradation efficiency. However, the cost of waste activated sludge treatment is notably high, representing more than half of the total operating costs of the wastewater treatment plant facilities. Thus, the study is conducted to investigate the optimum operating conditions on amount of H2O2/kg TS, H2O2/Fe2+ molar ratio and reaction time for Fenton treatment of settled activated sludge. The experiments were conducted by varying the amount of Fenton’s reagent, fixed at pH 3, allowing for selected reaction time following the Central Composite Design combinations by Design Expert software. For performance evaluation, mixed liquor volatile soluble solids (MLVSS), soluble chemical oxygen demand (sCOD), capillary suction time (CST) and extracellular polymeric substances (EPS) were measured. The optimum conditions were found to be 25 g H2O2/kg TS, H2O2/Fe2+ molar ratio 14 and reaction time 1.5 h with MLVSS removal 23% to 28%, sCOD 5000 mg/L to 6200 mg/L, CST 129 s to 170 s and EPS 80 mg/L to 115 mg/L. In sum, within the study range of chemical dosages in this research, the mechanism of sludge disintegration in Fenton treatment reduced the sludge quantities, however, impaired its dewaterability.

Item Type: Final Year Project
Academic Subject : Academic Department - Civil Engineering - Water and environment - Environmental - Wastewater
Subject: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Engineering > Civil
Depositing User: Ahmad Suhairi Mohamed Lazim
Date Deposited: 30 Jan 2015 10:57
Last Modified: 25 Jan 2017 09:36
URI: http://utpedia.utp.edu.my/id/eprint/14609

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