TY - JOUR
T1 - Effects of Piecewise Electric Field Operation on Sludge Dewatering
T2 - Phenomena and Mathematical Model
AU - Lv, Hang
AU - Wang, Fang
AU - Liu, Daoguang
AU - Zhang, Yanlin
AU - Gu, Yueyuan
AU - Yuan, Du
AU - Xing, Siqi
AU - Wu, Xu
AU - Yang, Jiakuan
AU - Zhang, Wenbiao
AU - Scott, Keith
N1 - Publisher Copyright:
© 2018 American Chemical Society.
PY - 2018/9/19
Y1 - 2018/9/19
N2 - Electro-dewatering (EDW) is an energy-efficient method for sludge dewatering. In this study, effects of piecewise electric field operation on EDW were investigated by experiments and simulation. Operational parameters were studied mainly in terms of sludge resistance variation during electro-dewatering process, which were evaluated by linear sweep voltammetry (LSV) analysis. Simulation of the sludge cake electro-dewatering processes was developed and validated, based upon time-dependent experimental data of electric currents and filtrate weights. The modeling results were in good agreement with experiments. It was proved by experimental and modeling results that the piecewise operation has positive effects on key performances of EDW devices, that is, limited water content, space-time yield, and mass specific energy consumption.
AB - Electro-dewatering (EDW) is an energy-efficient method for sludge dewatering. In this study, effects of piecewise electric field operation on EDW were investigated by experiments and simulation. Operational parameters were studied mainly in terms of sludge resistance variation during electro-dewatering process, which were evaluated by linear sweep voltammetry (LSV) analysis. Simulation of the sludge cake electro-dewatering processes was developed and validated, based upon time-dependent experimental data of electric currents and filtrate weights. The modeling results were in good agreement with experiments. It was proved by experimental and modeling results that the piecewise operation has positive effects on key performances of EDW devices, that is, limited water content, space-time yield, and mass specific energy consumption.
UR - http://www.scopus.com/inward/record.url?scp=85048109971&partnerID=8YFLogxK
U2 - 10.1021/acs.iecr.8b01019
DO - 10.1021/acs.iecr.8b01019
M3 - Journal article
AN - SCOPUS:85048109971
SN - 0888-5885
VL - 57
SP - 12468
EP - 12477
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
IS - 37
ER -