Polycyclic Aromatic Hydrocarbons in Urban Stream Sediments

Bathi, Jejal Reddy; Pitt, Robert; Clark, Shirley E.

doi:10.1155/2012/372395

Cited by 10 publications

(5 citation statements)

References 16 publications

(16 reference statements)

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“…Suspended sediment is particularly inconvenient for the environment. Fine particles affect the colour and turbidity of water, and are also carriers of other pollutants, including: heavy metals (Herngren et al 2005), radionuclides (Walling 2006), phosphorus compounds (Hejduk 2011), polycyclic aromatic hydrocarbons (Bathi et al 2012), and pharmaceuticals (Sikorska et al 2012). Consequently, they can pose a threat to human health, or to the proper functioning of ecosystems, even far away from the place of their creation.…”

Section: Introductionmentioning

confidence: 99%

Transportation of Sediment Carried During Flood Events in a Small Urban Catchment

Krajewski¹,

Gładecki²,

Banasik³

2018

ASP.FC

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The aim of this study is to present results of investigations into rainfall-runoff-suspended sediment transport process, based on field measurements conducted in small (A = 28.7 km 2) urban catchment of Służew Creek, located in Warsaw. Hydrological monitoring was carried out by the Department of Hydraulic Engineering at the WULS-SGGW (Warsaw University of Life Sciences). Between 2014-2017, twelve flood events were recorded, during which rainfall, discharge, turbidity, and suspended sediment concentrations were measured. The correlation between the flows and sediment concentration was analysed and clockwise hysteresis for all events was indicated, meaning that sediment concentrations during the increase of water flows were higher than at the same flow values during the fall of the flood wave. Also first flush effect has been noted, that is, most of the sediment loads was washed-off at the beginning of the flood event; whereas the peak concentration occurred prior to the maximum discharge. Statistically significant correlation between direct runoff and suspended sediment has been established.

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Section: Introductionmentioning

confidence: 99%

Transportation of Sediment Carried During Flood Events in a Small Urban Catchment

Krajewski¹,

Gładecki²,

Banasik³

2018

ASP.FC

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“…The high molecular weight PAHs had a greater portion associated with the particulates than did the low molecular weight PAHs. Bathi (2008) found that overall, all characteristics studied showed similar trends, with the smaller and larger particles found to have relatively higher values compared to the intermediate sized particles. Cluster analyses of the PAH concentrations for the different particle sizes showed that for most cases examined, the LOM (light organic matter) fraction was found to be a statistically separate sample category (having much higher concentrations) from all other sizes.…”

Section: Polycyclic Aromatic Hydrocarbonsmentioning

confidence: 57%

“…In this specific case, the higher particulate strengths associated with larger particle size ranges may be related to the nature of the runoff particulates from the site due to large organic material from the adjacent landscaped areas. Bathi (2008) investigated Tuscaloosa, Alabama urban area stream sediment polycyclic aromatic hydrocarbon (PAH) values for different size ranges. PAHs can occur in soluble and particulate associated forms; however, previous studies have shown that particulate associated PAHs are most abundant in stormwater (Pitt et al 1999;Mahler et al 2005;Hwang and Foster 2006).…”

Section: Heavy Metalsmentioning

confidence: 99%

Southeastern United States Observations of Stormwater Pollutant Strengths by Particle Size

Pitt

Clark

Cai

et al. 2017

JWMM

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This paper summarizes the results of several stormwater research projects that investigated particulate pollutant strengths for different particle size ranges. This paper builds on the previous paper simultaneously published describing particle size distributions of stormwater particulates (Pitt et al. 2016). The pollutant strength information presented in this paper, along with the particle size distribution in the other paper, is critical when understanding the routing of stormwater particulates through urban systems and especially when calculating the expected performance of stormwater controls. The pollutant concentrations commonly have a bimodal distribution, with higher values for small particles (due to large surface areas) and sometimes for large particles (such as for polycyclic aromatic hydrocarbons, PAHs, that are strongly associated with large organic debris). In most cases, the majority of the stormwater pollutant masses at outfalls are associated with small and moderate-sized particulates (usually from ~10 µm to 200 µm) which are effectively transported through drainage systems. Stormwater controls that focus on larger particles (such as >300 µm) that are more abundant at source areas may have less effective benefits on discharged stormwater quality as they only contribute small fractions of the total particulate mass after being poorly transported through most drainage systems. Treatability tests show that effective removal of particulate-bound stormwater pollutants requires the control of the small particles, usually down to ~10 µm in size. Pre-treatment stormwater controls that focus on larger particles reduce maintenance issues and provide other benefits, but need to be supplemented with additional controls that are effective in the removal of small particles, usually in a treatment train arrangement.

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“…A study by Waschbush et al (1999) found that particles larger than 250µm in size contributed nearly 50% of the mass of total phosphorus and leaf material contributed an additional 30%. Bathi et al (2012) found that PAH concentrations had a bimodal distribution with concentrations being the highest when associated with particles less than 90µm and greater than 710µm in size. 13 PAHs were sampled at 3 locations, and all but 4 of the PAH-location combinations showed significant differences in PAH concentration by particle size.…”

Section: Conclusion and Recommendationsmentioning

confidence: 98%

A Performance Assessment of Two Multi-component Water Quality Facilities in the Columbia Slough and Fairview Creek Watersheds

Robinson

2012

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Title: A Performance Assessment of Two Multi-component Stormwater Management Facilities in the Columbia Slough and Fairview Creek Watersheds We examined the treatment trains at the Columbia Slough (CSWQF) and Fairview Creek Water Quality Facilities (FCWQF) in Gresham, OR and assessed their effectiveness at removing pollutants including nutrients, TSS, metals, pesticides, PAHs, and VOCs. Time-paced, fixed volume composite samples were collected during storm events at the inlets and outlet of the CSWQF and at the inlets and outlet of each treatment train component of the FCWQF. In addition, long-term data collected at the FCWQF was analyzed. Composite data collected during November 2-3, 2011 and March 5-6, 2012 showed that the treatment trains can measurably reduce the event mean concentration (EMC) of most pollutants present in stormwater. Removal efficiencies ranged from a low of 11 to 34 percent for nutrients to a high of 58 to 70 percent for TSS. Long-term data from the FCWQF confirms the findings of the individual sampling events and demonstrates that the FCWQF treatment train significantly reduces the EMCs of NH 3-N, TKN, BOD 5 , most of the heavy metals tested for, bacteria, TSS, and turbidity. When compared to data available from the International Stormwater BMP Database, effluent concentrations at the FCWQF were comparable to or lower than those in the BMP Database for nutrients including TKN, OP, and TP; metals including DCu, TCu, TNi, DPb, and TPb; and TSS. Effluent concentrations at the FCWQF were higher than those in the BMP Database for DZn, TZn, turbidity, and bacteria. When comparing the two facilities, the FCWQF generally reduced pollutant concentrations to a greater degree than did the CSWQF. Pollutant removal efficiency was potentially limited by rainfall intensity and seasonal factors, with removal efficiencies being higher for the spring event than the fall event. It is recommended that longterm monitoring be continued at both facilities until the pollutant removal efficiency of the entire CSWQF and the FCWQF treatment train components can be statistically quantified. Changes in sample collection methods and flow measurement are recommended that could improve the accuracy of pollutant concentration estimates considerably. Finally, it is recommended that further research be conducted to determine if significant relationships can be established between particle size and the following pollutants: heavy metals, total phosphorus, and PAHs. Defining these relationships may make it possible to estimate pollutant concentrations using the stormwater particle size distribution analysis. This page left blank intentionally.

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Polycyclic Aromatic Hydrocarbons in Urban Stream Sediments

Cited by 10 publications

References 16 publications

Transportation of Sediment Carried During Flood Events in a Small Urban Catchment

Transportation of Sediment Carried During Flood Events in a Small Urban Catchment

Southeastern United States Observations of Stormwater Pollutant Strengths by Particle Size

A Performance Assessment of Two Multi-component Water Quality Facilities in the Columbia Slough and Fairview Creek Watersheds

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