Geotechnical laboratory testing of biosolids

Biosolids is the end product of the wastewater treatment process. An innovative research project on biosolids is currently being undertaken in Melbourne, Australia to characterize its geotechnical characteristic which is essential to evaluate the performance of biosolids in various geotechnical applications. The geotechnical engineering characteristics of biosolids at Western Treatment Plant (WTP) in Melbourne, Australia was investigated and presented in this paper. The tests undertaken include consolidation, triaxial shear strength, hydraulic conductivity, compaction, California Bearing Ratio, Atterberg limits, particle density and particle size distribution.