Abstract
Urbanization in Malaysia has contributed to the increased of volume runoff to the drainage system. SUDS (Sustainable Urban Drainage System) / MSMA (Manual Saliran Mesra Alam) has been implement in Malaysia within several of components. Hence, swale is one of the designed and suggested by SUDS or MSMA in order to control the quantity and quality storm water runoff. The present study aimed to determine the quality of storm water runoff in swale and to analyse storm water runoff treatment using sand column as a part of filtration process. Water quality parameters tested included COD, BOD5, DO and TSS. The samples was test with sand column on D30, D60, D90 and DMIX. The results revealed that sand column improved the water quality by 4% to 80%. In conclusion, the sand column can be used to improve the storm water quality and can enhance the natural habitat.
Highlights
Development and urbanization of watersheds typically increases impervious land cover and leads to an increase in storm water runoff peak flow rates, total runoff volume, and degradation of runoff water quality
Storm water management focused on flood prevention through mitigation of the increase in peak flow rate by routing the runoff through a detention pond or some other system
The new design of filter media will suggest to improved storm water quality
Summary
Development and urbanization of watersheds typically increases impervious land cover (e.g. roads, parking lots, buildings) and leads to an increase in storm water runoff peak flow rates, total runoff volume, and degradation of runoff water quality. Storm water management has shifted to include techniques that reduce runoff volumes and improve runoff water quality in addition to reducing the peak flow rate. Such techniques are called Sustainable Urban Drainage System (SUDS) practices and are typically designed to reduce runoff through infiltration as well as improve storm water runoff quality. Storm water that passed by the swale will through sub surface drainage by infiltration process for treatment purpose which the pollutant will be removed. The performed a study which showed that sand filters provide little (i.e. 20 - 50 % total, 5-30% soluble) capacity for phosphorus removal compared to other SMPs [7]. The present study aim to determine the quality of storm water runoff in swale and analyze storm water runoff treatment using sand column as a part of filtration process
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