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Constructed wetlands

Typical design Constructed stormwater wetlands are relatively large end-of-pipe facilities that aim to use multiple treatment methods (for example sedimentation, biological and chemical processes) to remove pollutants from stormwater. The …

Sedimentation facilities

Typical design Although sedimentation facilities can take different forms, they all have in common that their primary aim is to use the process of particles settling to the bottom of …

Biofilters & bioretention

Typical design Biofilters are facilities where water flows vertically through a vegetated filter media. A combination of physical, chemical and biological mechanisms remove pollutants from the stormwater as it passes …

Infiltration facilities

Typical design Infiltration facilities is rather a process than a specific type of facility. Infiltration facilities can cover a range of different types and designs. Their primary aim is to …

Swales

Typical design Swales are vegetated (usually with grass) ditches with gentle side slopes that are commonly placed alongside streets but can be used in other areas as well. They usually …

Retention & detention facilities

Typical design The general feature of a retention/detention facility is that it provides a storage volume for water. Thus, it can buffer peak flows (Q): Qstormwater = Qin > Qout. …

Green roofs

Typical design Green roofs are an alternative to traditional roofs. One goal is to intercept rainfall directly where it lands and both reduce the runoff volume generated and delay the …

New green solutions to stormwater management

So far in this course activity, we have looked at challenges associated with pipe-based drainage systems and the problems with stormwater pollution. In recent decades, there has been increasing attention …

Stormwater pollution

In this movie, Kelsey explains the occurrence and transport of pollutants in stormwater, and how these can be addressed with green solutions.

Combined sewer overflows

In this movie, Ico continues to talk about some of the shortcomings of pipe-based systems and mentions the so called Sewer system. This system is based on the same network …

Week intro

Welcome to the second week of the course! This week we will take a look at transitioning from pipe-based to green urban drainage, the reasons to make this transition and …

Limitations of pipe-based systems

Pipe-based systems have been a common way of dealing with stormwater in urban areas for many years. However, recently there has been more attention for the limitations that these systems …