Bedload Transport of Bio-sediment

Bed sediment is subjected to shear stress induced by the flow. With an increase in the shear stress, sediment particles successively experience the destruction of the bed layer, incipient motion, and transport processes. Sediment transport is the focus of sediment research, including bedload and suspended load transport. As described in the previous chapters, biofilm growth changes the basic characteristics of sediment particles and influences the resistance to flow and the corresponding turbulence characteristics, which then affects sediment transport processes. Thus, it is necessary to study the transport characteristics of bio-sediment. This chapter mainly introduces the bedload transport of bio-sediment, and suspended load transport will be introduced in Chap. 5.