Monitoring and statistical modelling of sedimentation in gully pots

Gully pots are essential assets designed to relief the downstream system by trapping solids and attached pollutants suspended in runoff. This study applied a methodology to develop a quantitative gully pot sedimentation and blockage model. To this end, sediment bed level time series from 300 gully pots, spanning 15 months, were collected. A...

The impact of lateral house connections on the serviceability of sewer systems

It remains unknown how lateral house connections affect the performance of the sewer system, since the assessment of serviceability is mainly based on the state of the main sewer system. Further insight into the contribution of lateral house connections to the overall level of service provided can aid to target investments to parts of the system...

Air pocket removal from downward sloping pipes

Air-water flow is an undesired condition in water pipelines and hydropower tunnels. Water pipelines and wastewater pressure mains in particular are subject to air pocket accumulation in downward sloping reaches, such as inverted siphons or terrain slopes. Air pockets cause energy losses and an associated capacity reduction. Despite its practical...

Congresverslag Urban Drainage Modelling 9 te Belgrado

Van 3 tot en met 7 september 2012 is de negende Urban Drainage Modelling conferentie gehouden in Belgrado, de hoofdstad van Seme. Hieronder volgt een verslag van de indrukken die zijn opgedaan in Servië en de belangrijkste, wetenschappelijke ontwikkelingen die aan de orde zijn gekomen. Het congres had een vol wetenschappelijk programma, mede...

Guidelines on capacity reducing gas pockets in wastewater mains