Key parameters in sludge dewatering: testing for the shear sensitivity and EPS content.
The fraction of extractable extracellular polymeric substances (EPS) and the shear sensitivity (k(ss)) are key parameters with respect to sludge dewatering, affecting the dry matter content of dewatered sludge and the dewatering rate and conditioner demand, respectively. Methods are described for determination of the two key parameters by use of the same laboratory test reactor. The implications of such characterisation with respect to dewatering are discussed based on examples of application to sludge processing and novel process development for sludge minimisation.
Mikkelsen
H
H
Department of Environmental Engineering, Aalborg University, Sohngaardsholmsvej 57, DK-9000 Aalborg, Denmark.
Mascarenhas
T
T
Nielson
P H
PH
D011108:Polymers / Q000032:analysis*; D012722:Sewage / Q000737:chemistry*; D013314:Stress, Mechanical; D014865:Waste Disposal, Fluid / Q000379:methods*; D014867:Water / Q000032:analysis
D011108:Polymers; D012722:Sewage; D014867:Water