Enhancement the conditioning of waste activated sludge through a sequence of freeze/thaw-electro-Fenton process-Reference-Cited by-同舟云学术

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

Published:2018-03-01 Issue:1 Volume:20 Page:47-53
ISSN:1899-4741
Container-title:Polish Journal of Chemical Technology
language:en
Short-container-title:

Author:

Shahheidar Narjes¹,Jorfi Sahand²¹,Takdastan Afshin²¹,Jaafarzadeh Neemat²¹,Ahmadi Mehdi²¹

Affiliation:

1. Department of Environmental Health Engineering , Ahvaz Jundishapur University of Medical Sciences , Ahvaz , Iran

2. Environmental Technologies Research Center , Ahvaz Jundishapur University of Medical Sciences , Ahvaz , Iran

Abstract

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.

Publisher

Walter de Gruyter GmbH

Subject

General Chemical Engineering,General Chemistry,Biotechnology

Link

https://www.sciendo.com/pdf/10.2478/pjct-2018-0007

Reference42 articles.

1. 1. Xinghong Zhang, H.L., Kai, Chen, Zhang, Liu, Han, Wu & Haiyi, Liang. (2012). Effect of potassium ferrate(K2FeO4) on sludge dewaterability under different pH conditions. Chem. Eng. J. 210, 467–474. DOI: 10.1016/j.cej.2012.09.013.10.1016/j.cej.2012.09.013

2. 2. A. T. Pham, M.S. & Virkutyte, J. (2010). Sludge dewatering by sand-drying bed coupled with electro-dewatering at various potentials. Int. J. Min. Reclam. Environ. 24, 151–162. DOI: 10.1080/17480930903132620.10.1080/17480930903132620

3. 3. Elisabeth Neyens, J.B., Raf, Dewil & Bart, De Heyder. (2004). Advanced sludge treatment affects extracellular polymeric substances to improve activated sludge dewatering. J. Hazard. Mater. 106, 83–92. DOI: 10.1016/j.jhazmat.2003.11.014.10.1016/j.jhazmat.2003.11.014

4. 4. L. H. Mikkelsen, K.K. (2002). Physico-chemical characteristics of full scale sewage sludge with implications to dewatering. Water Res. 36, 2451–2462. DOI: 10.1016/S0043-1354(01)00477-8.10.1016/S0043-1354(01)00477-8

5. 5. G. P. Sheng, H.Q.Y. & Li, X.Y. (2010). Extracellular polymeric substances (EPS) of microbial aggregates in biological wastewater treatment systems: a review. Biotechnology Adv. 28, 882–894. DOI: 10.1016/j.biotechadv.2010.08.001.10.1016/j.biotechadv.2010.08.001

Cited by 3 articles. 订阅此论文施引文献订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献

1. The cooperative effect of mechanical dewatering and thermal drying for activated sludge deep reduction;Process Safety and Environmental Protection;2024-05

2. Thermal and non-thermal mechanism of microwave irradiation on moisture content reduction of municipal sludge;Water Research;2022-11

3. Pore-scale model and dewatering performance of municipal sludge by ultrahigh pressurized electro-dewatering with constant voltage gradient;Water Research;2021-02