<abstract xmlns="http://www.w3.org/1999/xhtml">Sludge conditioning is an important stage in sludge management. In the present study, a sequence of freeze/thaw-electro-Fenton process was designed and specific resistance filtration (SRF) was monitored during sludge conditioning as an important factor in sludge dewaterability. Furthermore, protein and polysaccharide concentrations were measured during the experiments. Results showed that the lowest SRF value contributed to −10°C in freezing process which showed a reducing trend by decreasing solution pH. In addition, results revealed that solution pH less than 3 caused a significant improvement in sludge dewatering; so the lowest SRF has been registered at pH = 2. By increasing current intensity from 0.5 to 1A, SRF values were reduced and then followed by an enhancement with increasing current intensity to 3.2 A. The lowest SRF value (6.1 × 104 m/kg) was obtained at H2O2 = 30 mg/L which was the best conditions for sludge dewatering.</abstract>

Sludge conditioning is an important stage in sludge management. In the present study, a sequence of freeze/thaw-electro-Fenton process was designed and specific resistance filtration (SRF) was monitored during sludge conditioning as an important factor in sludge dewaterability. Furthermore, protein and polysaccharide concentrations were measured during the experiments. Results showed that the lowest SRF value contributed to −10°C in freezing process which showed a reducing trend by decreasing solution pH. In addition, results revealed that solution pH less than 3 caused a significant improvement in sludge dewatering; so the lowest SRF has been registered at pH = 2. By increasing current intensity from 0.5 to 1A, SRF values were reduced and then followed by an enhancement with increasing current intensity to 3.2 A. The lowest SRF value (6.1 × 104 m/kg) was obtained at H2O2 = 30 mg/L which was the best conditions for sludge dewatering.

Enhancement the conditioning of waste activated sludge through a sequence of freeze/thaw-electro-Fenton process

Environmental Technologies Research Center

Ahvaz Jundishapur University of Medical Sciences

Department of Environmental Health Engineering

Polish Journal of Chemical Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Sludge conditioning is an important stage in sludge management. In the present study, a sequence of freeze/thaw-electro-Fenton process was designed and...

Enhancement the conditioning of waste activated sludge through a sequence of freeze/thaw-electro-Fenton process

Published Online: Apr 16, 2018

Page range: 47 - 53

DOI: https://doi.org/10.2478/pjct-2018-0007

Keywords
Sludge conditioning, freeze, thaw, electro-Fenton

© 2018 Narjes Shahheidar et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Enhancement the conditioning of waste activated sludge through a sequence of freeze/thaw-electro-Fenton process

Published Online: Apr 16, 2018

Page range: 47 - 53

DOI: https://doi.org/10.2478/pjct-2018-0007

KeywordsSludge conditioning, freeze, thaw, electro-Fenton

© 2018 Narjes Shahheidar et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Sludge conditioning, freeze, thaw, electro-Fenton