This R&D project is carried out by Delft University of Technology and funded by Technology Foundation STW, Deltares, Stowa, RIONED, Waternet, Waterboard Zuiderzeeland, Grontmij and XYLEM.

D-SHIT Domestic Slurry Characterisation Domestic Slurry Hydraulics In Transport systems

Supervisor Ir. Adithya Thota Radhakrishnan E-mail a.k.thotaradhakrishnan@tudelft.nl

Professor Prof. Francois Clemens

Research field Urban Drainage, Fluid Dynamics, Rheology Subject title To study the viscosity of concentrated domestic slurry Project proposal Introduction To bridge the gap in future sanitation systems, the D-SHIT (Domestic Slurry Hydraulics in Transport systems) project was initiated to study the transportability of domestic waste. In order to effectively design a pressurised sewer network for the transport of domestic slurry, information about its rheology (viscosity) is required. This will provide basic information about the flow of slurries. This study will focus on measuring the viscosity of Concentrated Domestic Slurry (CDS) at various temperatures and solid concentration.

Fig. 1: Pilot system DeSaH Fig. 2: Rheometer

Experimental description The experiments will be performed using the slurry collected from a pilot system (Fig. 1) in DeSaH B.V. (Leeuwarden). A rheometer (Fig. 2) will be used to determine the viscosity of the slurry. This will be performed at various solid concentrations and temperatures. Requirement

This project will require few specific skills and knowledge:

1. Basic fluid mechanics 2. Good laboratory skills