Microbiological water quality in drinking water distribution systems: Integral study of bulk water, suspended solids, loose deposits, and pipe wall biofilm

Adsorption of organic micropollutants onto activated carbon and zeolites

Advanced oxidation and managed aquifer recharge: A synergistic hybrid for organic micropollutant removal

Subsurface iron and arsenic removal for drinking water treatment in Bangladesh

Arsenic contamination of shallow tube well drinking water is an urgent health problem in Bangladesh. Current arsenic mitigation solutions, including (household) arsenic removal options, do not always provide a sustainable alternative for safe drinking water. A novel technology, Subsurface Arsenic Removal, relies on the existing technology of...

A New Concept of Ultrafiltration Fouling Control: Backwashing with Low Ionic Strength Water

Ultrafiltration (UF) is a proven technology in water treatment nowadays. However, fouling remains a major challenge in the operation of UF, especially in regard to colloidal NOM fouling. In general, a number of colloidal NOM fouling mechanisms may occur, such as adsorption, gel formation. Colloidal NOM fouling is influenced by multivalent...

Stochastic water demand modelling for a better understanding of hydraulics in water distribution networks

In the water distribution network water quality process take place influenced by de flow velocity and residence time of the water in the network. In order to understand how the water quality changes in the water distribution network, a good understanding of hydraulics is required. Specifically in the periphery of the network, where customers are...

CFD in drinking water treatment

Hydrodynamic processes largely determine the efficacy of drinking water treatment systems, in particular disinfection systems. A lack of understanding of the hydrodynamics has resulted in suboptimal designs of these systems. The formation of unwanted disinfection-by-products and the energy consumption or use of chemicals is therefore higher than...

Rejection of organic micropollutants by high pressure membranes (NF/RO)

The presence of numerous organic micropollutants, such as pharmaceutically active compounds (PhACs) and hormones, but also pesticides and industrial pollutants, in the sources for the drinking water supply, are a big concern for drinking water utilities. Even though not all pollutants are harmful to human health, less is known about the...

Stochastic modelling of drinking water treatment in quantative microbial risk management

Integrated modeling of ozonation for optimization of drinking water treatment

Drinking water treatment plants automation becomes more sophisticated, more on-line monitoring systems become available and integration of modeling environments with control systems becomes easier. This gives possibilities for model-based optimization. In operation of drinking water treatment plants, the processes are usually optimized...

Discolouration in drinking water systems: A particular approach

The quality of drinking water in the Netherlands meets high standards as is annually reported by the Ministry of Housing, Spatial Planning and the Environment (VROM)(Versteegh and Dik, 2006). Also the water companies themselves report in the voluntary Benchmark that water quality is one of the least discriminating factors as all the companies ...

Application of air in membrane filtration

Improving operation of drinking water treatment through modelling

Mathematical modelling of NF and RO membrane filtration plants and modules