Sustainable Urban Water Environment
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Sustainable Urban Water Environment

Climate, Pollution and Adaptation

Ashantha Goonetilleke, Tan Yigitcanlar, Godwin A. Ayoko and Prasanna Egodawatta

This multi-disciplinary book provides practical solutions for safeguarding the sustainability of the urban water environment. Firstly, the importance of the urban water environment is highlighted and the major problems urban water bodies face and strategies to safeguard the water environment are explored. Secondly, the diversity of pollutants entering the water environment through stormwater runoff are discussed and modelling approaches for factoring in climate change and future urban and transport scenarios are proposed. Thirdly, by linking the concepts of sustainable urban ecosystems and sustainable urban and transport development, capabilities of two urban sustainability assessment models are demonstrated.
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Chapter 6: Modelling water pollutant processes

Ashantha Goonetilleke, Tan Yigitcanlar, Godwin A. Ayoko and Prasanna Egodawatta


Stormwater is one of the most critical contributors to receiving water pollution. To achieve sustainability in water environments, mitigating stormwater pollution is of critical importance. Stormwater quality modelling plays a pivotal part in informed decision-making in relation to stormwater pollution mitigation. In general, a model is considered as the replication of a real-world system by using a collection of numerically simulated processes. In reality, a model is often a simplification of the real-world system. A stormwater quality model is no different to this, and is formulated primarily to replicate the urban stormwater system by using simplified mathematical equations to replicate pollutant processes. As noted by Zoppou (2001), stormwater quality models can be categorised as stochastic or deterministic models. Stochastic models are based on statistical distribution of stormwater quality. These models typically do not replicate pollutant processes. Model for Urban Stormwater Improvement (MUSIC) is an example of a stochastic stormwater quality model, which is one of the popular stormwater quality models used in Australia (MUSIC, 2009). This chapter does not intend to discuss stochastic models in detail, primarily due to the fact that these models do not use equations to replicate pollutant processes. Deterministic stormwater quality models utilise mathematical equations to replicate processes such as pollutant build-up and wash-off. SWMM is an example of a deterministic stormwater quality model which replicates pollutant build-up and wash-off processes (Huber and Dickinson, 1988).

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