Papers

@article{Regueiro-Picallo2020,

title = {New insights to study the accumulation and erosion processes of fine-grained organic sediments in combined sewer systems from a laboratory scale model},

author = {Manuel Regueiro-Picallo and Joaquín Suárez-López and Esteban Sañudo-Costoya and Jerónimo Puertas-Agudo and Jose Anta-Álvarez},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85078976942&doi=10.1016%2fj.scitotenv.2020.136923&partnerID=40&md5=de94d30a09f5df4436edf038f338c94c},

doi = {10.1016/j.scitotenv.2020.136923},

issn = {00489697},

year  = {2020},

date = {2020-01-01},

urldate = {2020-01-01},

journal = {Science of the Total Environment},

volume = {716},

publisher = {Elsevier B.V.},

abstract = {The deposition and resuspension of sediments are issues of considerable concern in combined sewer systems management. Sediments can produce the loss of hydraulic capacity and odour generation in sewers, and are also considered the main source of pollution due to their occasional uncontrolled discharges into the environment via Combined Sewer Overflows (CSO). Sewer sediments contain granular and cohesive organic fractions that can have a significant influence on bed resistance. In order to address the relationship between sewer sediment composition and its erodibility, accumulation and erosion experiments were performed in a flume test facility fed with wastewater. The flume was placed in a Wastewater Treatment Plant (WWTP), in which different circular pipe geometries were set. Wastewater flow inlet conditions and bed structures were monitored during the experiments. The photogrammetric technique Structure from Motion (SfM) was applied to record the bed deposit structures, providing accurate measurements of the accumulation rates. The SfM was also used to assess sediment transport and the characteristics of the bed forms after the erosion tests. In addition, velocity distributions and shear stress profiles were measured during the erosion tests to characterize flow resistance and sediment erosion. During both accumulation and erosion tests, sediments were sampled in order to analyse their physicochemical properties, thus highlighting the study of the biodegradability of the organic matter. Different deposition periods showed biological transformations in the bed deposit structure, which were seen to affect its cohesion, and in consequence, its erosion threshold. Tests with significant erosion rates agreed in broad terms with dimensionless sediment transport models derived from previous experimental studies performed with partly cohesive and organic materials in sewer pipes. © 2020 Elsevier B.V.},

note = {cited By 13},

keywords = {accumulation; bedload; biodegradation; erodibility; erosion; fine grained sediment; flume experiment; laboratory method; organic matter; photogrammetry; sewer network, Bed-load transport; Biological transformation; Combined sewer overflows; Erodibility; Photogrammetric technique; Sediment transport model; Sewer sediments; Wastewater treatment plants, Biodegradability; Deposits; Erosion; Photogrammetry; Physicochemical properties; Sediment transport; Sedimentation; Shear flow; Shear stress; Testing; Wastewater treatment, Combined sewers, organic compound},

pubstate = {published},

tppubtype = {article}

}

@article{DelRío2013189,

title = {PPCPs wet weather mobilization in a combined sewer in NW Spain},

author = {Héctor del Río and Joaquín Suárez-López and Jerónimo Puertas-Agudo and Pablo Ures},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84874356314&doi=10.1016%2fj.scitotenv.2013.01.049&partnerID=40&md5=a0c430b1d17a23d9f89082b2a4f4ea1d},

doi = {10.1016/j.scitotenv.2013.01.049},

issn = {00489697},

year  = {2013},

date = {2013-01-01},

urldate = {2013-01-01},

journal = {Science of the Total Environment},

volume = {449},

pages = {189-198},

publisher = {Elsevier B.V.},

abstract = {An intense campaign was carried out over a 14. month period to characterize concentrations and loads of 7 well-known Pharmaceuticals and Personal Care Products (PPCPs), during dry and wet weather conditions, in an urban combined catchment in the northwest of Spain, a geographical zone with an average annual rainfall over 1500. mm. The main objective was to gather more in-depth knowledge of the mobilization of these "micropollutants" in an urban combined sewer and the possible pressures on water receiving bodies due to combined sewer overflows (CSOs). Hydrographs and pollutographs of these substances in dry weather flows (DWF), on weekdays and weekends, and wet weather flows (WWF) during 10 rain events have been characterized to obtain data that are sufficiently representative for statistical analysis. The research findings show that there is a considerable mobilization of these substances during rain events, mainly in the first part of the hydrographs, especially HHCB galaxolide, ibuprofen and paracetamol with maximum concentrations of 9.76, 8.51 and 5.71. μg/L respectively, whereas these concentrations in dry weather only reached 2.57, 2.11 and 0.72. μg/L respectively. There is a good correlation between the degree of mobilization in wet weather flows and the percentage of dry weather particulate phase of each studied substance, indicating that such mobilization may be associated with adsorption on the sediments deposited on the collectors during the antecedent dry period. These results are in good agreement with removal in conventional WWTP, especially for compounds that tend to adsorb onto sewage sludge. © 2013 Elsevier B.V..},

note = {cited By 28},

keywords = {article; controlled study; dry weather flow; environmental parameters; hydrography; pollution transport; priority journal; sediment; sewer; Spain; statistical analysis; water pollution; weather; wet weather flow, caffeine; carbamazepine; diclofenac; environmental, catchment; concentration (composition); dry season; mobilization; sewage treatment; sewer network; urban pollution; waste management; wastewater; wet season, Catchments; Drug products; Rain; Sewage sludge, Combined sewers, industrial and domestic chemicals; galaxolide; ibuprofen; paracetamol; pharmaceutical and personal care product; rain; tonalide; unclassified drug, Spain},

pubstate = {published},

tppubtype = {article}

}