Stormwater particles and their sampling using passive devices
Paper
Paper/Presentation Title | Stormwater particles and their sampling using passive devices |
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Presentation Type | Paper |
Authors | |
Author | Brodie, Ian |
Journal or Proceedings Title | Proceedings of the 10th International Conference on Urban Drainage (ICUD 2005) |
Number of Pages | 8 |
Year | 2005 |
Place of Publication | Lyngby, Denmark |
ISBN | 8789220803 |
Web Address (URL) of Paper | http://10icud.er.dtu.dk/ |
Conference/Event | 10th International Conference on Urban Drainage (ICUD 2005) |
Event Details | 10th International Conference on Urban Drainage (ICUD 2005) Parent International Conference on Urban Drainage Delivery In person Event Date 21 to end of 26 Aug 2005 Event Location Copenhagen, Denmark |
Abstract | [Abstract]: Total Suspended Solids (TSS) is commonly used as a measure of particle concentration in stormwater. The breakdown of TSS into subgroups based on particle size is an important step in describing stormwater characteristics. A simple classification system is proposed that divides solids into four size ranges; Very Fine (VFPs, <8μm), Fine (FPs, 8-63μm), Medium (MPs, 63-500μm) and Coarse Particles (CPs, >500μm). The use of passive samplers to obtain unbiased, flow-weighted samples of non-Coarse particles was investigated. Two alternative passive samplers referred to as a flow splitter and an orifice and weir device were designed, constructed and tested. The flow splitter outperformed the orifice and weir device in terms of sampling accuracy. Based on hydraulic testing up to 5 L/s, the flow splitter was able to accurately (±2% error) obtain a constant sample volume: flow volume ratio compared to a ±15% error for the orifice and weir. Based on sediment testing, the performance of the flow splitter in obtaining VFP and FP samples was similar to that of high frequency grab sampling. Samples collected by the flow splitter matched theoretical concentrations of particles less than 63μm to within ±2% error. All sampling methods significantly underestimated the concentration of particles greater than 63μm (MPs) and more research is needed in this area. Overall, the flow splitter is considered to have significant potential for determining the Event Mean Concentration of stormwater particles. |
Keywords | Event Mean Concentration, passive samplers, stormwater monitoring, suspended solids |
ANZSRC Field of Research 2020 | 400499. Chemical engineering not elsewhere classified |
400513. Water resources engineering | |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | Department of Agricultural, Civil and Environmental Engineering |
https://research.usq.edu.au/item/9y432/stormwater-particles-and-their-sampling-using-passive-devices
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