Changes

** This study examined the separation characteristics of particles in runoff from paved roads using a OGS hydro cyclone design. The results indicated the TSS concentration ratio between the overflow and inflow (TSSover/in) decreased as a function of the operational pressure and the particle removal efficiency was mainly affected by the particle size. By using highway runoff results showed that removal efficiency was greater than 60%. The TSSover/in was (0.26 mg/L – 0.41 mg/L) below the Canadian Water Quality Guidelines (CWQGs) (Jianghua, et al. 2009<ref>Jianghua, Y., Qitao, Y. and Kim, Y. 2009. Performance analysis of a hydrodynamic separator for treating particulate pollutants in highway rainfall runoff. Environmental Engineering Research, 14(4), pp.262-269. https://www.eeer.org/upload/eer-14-4-262-.pdf</ref>).

** This study examined the separation characteristics of particles in runoff from paved roads using a OGS hydro cyclone design. The results indicated the TSS concentration ratio between the overflow and inflow (TSSover/in) decreased as a function of the operational pressure and the particle removal efficiency was mainly affected by the particle size. By using highway runoff results showed that removal efficiency was greater than 60%. The TSSover/in was (0.26 mg/L – 0.41 mg/L) below the Canadian Water Quality Guidelines (CWQGs) (Jianghua, et al. 2009<ref>Jianghua, Y., Qitao, Y. and Kim, Y. 2009. Performance analysis of a hydrodynamic separator for treating particulate pollutants in highway rainfall runoff. Environmental Engineering Research, 14(4), pp.262-269. https://www.eeer.org/upload/eer-14-4-262-.pdf</ref>).

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*[https://pubmed.ncbi.nlm.nih.gov/24845330/ (Lee, et al. 2014) - Performance evaluation and a sizing method for hydrodynamic separators treating urban stormwater runoff.]

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**This study conducted performance monitoring over a 6-year period (137 separate storm events) of four different hydrodynamic separators in Korean urban catchments between 2006 - 2012. Removal rates were relatively low at all four sites (1. Roadway site: Avg. Inflow = 239.32 mg/L vs Avg. Outflow = 122.2- mg/L /  2. Residential site:  Avg. Inflow = 59.74 mg/L vs Avg. Outflow = 50.35 mg/L / 3. Roadway Site: Avg. Inflow = 62.50 mg/L vs. Avg. Outflow = 33.76 mg/L / 4. Residential(63.5%) & Roadway (36.5%) CDA site: Avg. Inflow = 236.24 mg/L vs. Avg. Outflow = 160.54 mg/L)

==References==

==References==