Premium
The Control of Polymer Addition to Raw Waste Sludge Using Electrical Resistance Tomography – a Preliminary Study
Author(s) -
Dai Yunfeng,
Pachowko Antonio D.,
Wang Mi
Publication year - 2004
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.200400911
Subject(s) - raw material , dewatering , polymer , materials science , particle size distribution , sewage sludge , tomography , electrical resistance and conductance , sewage treatment , particle size , environmental science , composite material , environmental engineering , chemistry , geotechnical engineering , physics , organic chemistry , optics , engineering
This paper presents the application of a monitor technique using electrical resistance tomography (ERT) for controlling the optimum polymer dosage for sludge dewatering. The content starts from introduction for characterization of a raw sewage sludge sample, including particle size distribution and volumetric solids concentration, and the conductivity properties of the sludge and the polymer used. The experimental results demonstrate that the different polymer doses mixed with raw sludge leads to a change of floc size and distribution, and further these changes can be monitored using ERT. The result of ERT measurement can be applied in determining the optimum polymer dosage in the water treatment, as a potential new technique.