Biological As oxidation during start-up of rapid sand filters

Determination of optimal separation well distance for single borehole ATES systems, in the Netherlands, implementing an an axi-symmetric numerical model

Aquifer thermal energy storage (ATES) is a growing technology in the Netherlands. There are two kinds of ATES configurations the doublet and the single borehole ATES (SB-ATES) layout. The limited subsurface space in combination with the lower construction cost and the lower performance of the SB-ATES lead to the need to optimize their design....

An upscaling method for top-systems with layered heterogeneity and vertical anisotropy

The subsurface in the Western part of the Netherlands is generally characterized as a regional aquifer, in which most of the lateral groundwater flow takes place, covered by a semi-permeable layer. The semi-permeable layer is often split into a phreatic layer on top of an aquitard (which has an even lower permeability). The phreatic layer and...

Subsurface Freshwater Storage & Recovery In Artificial Islands: Case Study of Pluit City Land Reclamation Jakarta, Indonesia

This research seeks to discover the possibilities of Artificial Storage and Recovery (ASR) in an artificial urban island in Jakarta, to increase water security and provide a sustainable water supply.

Groundwater modelling of the khettara area of Fezna-Jorf-Hannabou, Morocco

This master thesis comprehends a study on khettaras, historical subsurface drainage tunnels, in East Morocco. A numerical groundwater model was set up to simulate these systems and to get a better understanding of their behaviour. Subsequently, the model was used to simulate the effect of several scenarios: increased use of pumped wells in the...

Modelling ungauged lowland basins: Does complementary groundwater data add value to topography driven conceptual modelling?

A common practice for hydrologists to determine the performance of a hydrological model and its parameter values, is by calibrating the model parameters on observed discharge data, but this data is not always available. For this reason, other data should be used as complementary data in order to reduce the uncertainty of outflow and processes in...