Enhancing the Storm Water Treatment Performance of by Isri R. Mangangka, An Liu, Ashantha Goonetilleke, Prasanna

By Isri R. Mangangka, An Liu, Ashantha Goonetilleke, Prasanna Egodawatta

This e-book identifies the most important hydrologic and hydraulic components which impression the functionality of stormwater caliber remedy platforms resembling developed wetlands and bioretention basins. Mathematical relationships derived utilizing conceptual types underpinned via primary hydraulic thought are provided to foretell therapy functionality. the most important highlights of the ebook will comprise the id of the linkages among influential hydrologic and hydraulic components for developed wetlands and bioretention basins to help extra actual prediction of therapy functionality and potent layout of those forms of stormwater remedy structures. in addition, this e-book will show off an leading edge technique for utilizing conceptual types to research stormwater remedy process performance.

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Additional resources for Enhancing the Storm Water Treatment Performance of Constructed Wetlands and Bioretention Basins

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McGraw-Hill Inc, New York Elliott AH, Trowsdale SA (2007) A review of models for low impact urban stormwater drainage. Environ Model Softw 22:394–405 Gerhart PM, Gross RJ (1985) Fundamentals of fluid mechanics. Reading Addison-Wesley, Massachusetts Green WH, Ampt GA (1911) Studies on soil physics, part I, the flow of air and water through soils. J Agric Sci 4:1–24 Greve FV (1932) Flow of water through circular, parabolic and triangular vertical notch weirs. Eng Buletin, Purdue Univ 40(2):37–60 Han D (2008) Concise Hydraulics.

High inflow creates high free surface elevation in the inlet pond leading to part of the inflow bypassing through a channel (3). The water from wetland cell 1 flows into wetland cell 2 through a 1 m wide channel (4), which is assumed as a broad crested weir. The water in wetland cell 2 leaves the wetland system through a PVC riser (outlet structure) (5). 4 Conceptual Model for a Constructed Wetland Fig. 6 The constructed wetlands. a Aerial view of the constructed wetland. b The constructed wetlands at the site.

In the first scenario, when a slot is fully submerged, the flow was assumed as flow through a small orifice as shown in Fig. 11. Flow through a fully submerged orifice was calculated using Eq. 11. 4 Conceptual Model for a Constructed Wetland 33 Fig. 10 The configuration of the PVC riser Fig. 11 Flow through a small orifice Q ¼ CdA where Q Discharge (m3/s) Cd Discharge coefficient pffiffiffiffiffiffiffiffiffiffiffiffiffi ð2gHÞ ð2:11Þ 34 2 Creating Conceptual Models of Treatment Systems Fig. 12 Flow through a circular sharp-crested weir A g H Cross section area of the slot (m2) Acceleration due to gravity (m/s2) Head from the centre of the slot (m) In the second scenario, when a slot is partially filled, flow was calculated, considering it operates as a circular sharp-crested weir (Fig.

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