Balance between water quality and water quantity based on retention time in a biofilter

Urbanization has led to increased impermeable surfaces, disrupting the natural hydrological cycle and resulting in more frequent urban flooding and pollution. There is an urgent need for cost-efficient and effective stormwater management solutions to improve stormwater quality and facilitate its reuse. FieldFactors' BlueBloqs system integrates...

Building Resilience: Analyzing Beira’s Drainage Network and Flood Management: The impact of failure mechanisms on flooding in informal settlements

This research analyses and evaluates the performance of the drainage system in Beira, Mozambique. It considers its formation, maintenance, failure modes and connections, to recommend improvements on its performance. The research identifies six primary failure modes - vegetation overgrowth, human interference, waste accumulation, sedimentation,...

Applicability of a conceptual tool in quantifying the effectiveness of Nature-Based Solutions in tropical urban flood mitigation: A case study in Paramaribo, Suriname

This thesis aims to assess the applicability of the CRCTool for evaluating the effectiveness of NBS for mitigating tropical urban floods in the city center of Paramaribo. Assumptions related to urban flood mitigation were tested, a sensitivity analysis for the most sensitive parameters was performed, and the hydrological behaviour of groundwater...

Urban Wastewater Management of Willemstad, Curaçao, and Environmental Implications: A qualitative and quantitative investigation on urban wastewater fluxes

Curaçao's coral reefs are subjected to a deteriorating momentum risking the health and therefore sustainability of this vital ecosystem. Despite the dependency of the Island's prosperity on the condition of the ecosystem, research suggests that wastewater management is likely to be a significant contributor to this effect. Incorporating both...

Sediment and Phosphorus Removal in a Decentralized Stormwater Treatment System: Assessing the performance of a modified SediSubstrator L in the city of Amsterdam

In the context of climate change and urbanization, sustainable urban drainage systems (SUDS) are widely adopted measures to manage stormwater in the city on-site. However, their performance in practice often differs from modelled and laboratory-scale predictions due to the variability in properties of real sediments (in terms of size, shape,...

Probabilistic Risk Assessment of Urban Drainage Systems: Exploring Hanoi’s inundation problems using PCSWMM

This research explores the frequent urban flooding problems typically experienced in South-East Asian cities. Heavy rainfall during the monsoon period in combination with rapid urbanisation in the past decades causes an increasing amount of inundation events in the case study area Hanoi. The damage caused by these floods results in major...

Circularity and adaptability as possible approaches to mitigate urban drought: a case study of the city of Breda

From 2018 to 2020, the city of Breda (NL) faced drought, with significant economic losses and water scarcity problems. The water board within which the city is located began to consider new possible water management practices, due to the unsustainability of the current ones. This study aims to investigate how a change of the current paradigm can...

Developing a monitoring network for Waterstreet’s living lab

Sustainable Urban Drainage Systems (SUDS) are useful tools to manage rainwater and reduce pollutants in urban environments. Their use, as sustainable solutions, can mitigate the effects of climate change and urbanization. The existence of different definitions of performance is one reason for delaying more implementation of SUDS. Deciding on the...

Optimal Rehabilitation of Urban Drainage Systems: Application of single-objective optimisation for the implementation of Green-Blue-Grey Infrastructures in changing climate

Urban Drainage Systems (UDS) are one of the most vital yet, complex infrastructures that support people's livelihood in urban areas. However, due to their mainly underground infrastructure and complexity, the planning and management of UDS are usually associated with high investment, which stakeholders sometimes overlook. As long-lived...

Defining the effectiveness of urban runoff measures: A model study

Urban climate adaptation is generally attained --- in a hydrological perspective -- by implementing stormwater management techniques, such as grey, blue and green adaptation measures. Implementing such multi-functional adaptation measures touches on the interests of many stakeholders who need to work together to find resilient and suiting...

Climate resilience of railway stations in The Netherlands: A risk assessment for passenger stations

As climate change takes hold, extreme weather events increasingly pressure the performance of the railway infrastructure. A first insight has been obtained into the impacts of climate change for the train system and the railway network, but there are almost no studies on the impact of our changing climate on railway stations. This study...

Determination of the removal efficiency of a decentralized stormwater treatment system: A theoretical approach to assess a modified SediSubtrator L

Due to the predicted impacts of climate change on the frequency of storm events, water managers are challenged to improve and adapt the current urban infrastructure. Cities need to be able to deal with the adverse effects due to more frequent and heavier rainfall. This implies the need for sustainable urban drainage systems (SUDS) that can deal...

Hidden Danger: Mapping consequences of underground water infrastructure failure to guide asset management

Continuous functioning of sewer systems and water distribution networks is crucial for liveability, public health and economic prosperity in urban areas. Progressive deterioration of these underground water infrastructures leads to an increased probability of failure. Maintenance is needed to ensure a desired level of functioning. For...

The barriers a design and consultancy company encounters in its efforts to create climate-proof cities: So close, yet so far?

Identify the barriers within Arcadis by evaluating internal approaches, knowledge and differences in domains to increase the action perspective in the approach of climate-proof cities. The data was collected by performing 24 interviews and this was analysed and structured using the PRIMO-chain model.