Spatial Distribution and Temporal Change of PPCPs and Microbial Fecal Indicators as Sewage Markers after Rainfall Events in the Coastal Area of Tokyo

Poopipattana, Chomphunut; Nakajima, Misaki; Kasuga, Ikuro; Kurisu, Futoshi; Katayama, Hiroyuki; Furumai, Hiroaki

doi:10.2965/jwet.17-052

Cited by 15 publications

(7 citation statements)

References 28 publications

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“…St.SB is located near Microplastics in sewage and highway runoff to a large pumping station. Our previous study suggested that both locations are influenced by CSO following rainfall events (Poopipattana et al, 2018). We collected surface water samples during dry weather on December 16, 2019 and during a rain event on November 23, 2019.…”

Section: Sample Collectionmentioning

confidence: 99%

Microplastics in urban wastewater and estuarine water: Importance of street runoff

Sugiura

Takada

et al. 2021

EMCR

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We measured microplastics [(MPs): 10 μm -5 mm] in untreated and secondary-treated sewage, highway runoff, and estuarine water in Tokyo, Japan, during both dry and wet weather. MPs smaller than 200 μm were predominant, making up > 60% of the total number, in all our water samples. The abundance of the MPs was 420 pieces / L in the influent and 8.7 pieces / L in the secondary effluent, indicating a removal efficiency of 98% during primary + secondary treatment. Of the measured polymers-polyethylene (PE), polypropylene, polystyrene, polyethyleneterephthalate (PET), polyethylene polypropylene copolymer, polyethylene polypropylene diene (PEPD), polyethylene vinyl acetate, and acrylonitrile styrene, PET was predominant in the sewage influent (88%) and effluent (49%) and its form was mostly fibrous, indicating contribution from laundry effluents. Highway runoff water samples contained high concentrations of MP (81-292 pieces / L). The highway runoff contained more PE (25%-49%) and PEPD (13%-30%) than PET (3%-12%) indicating contribution from debris from automobile tire wear and plastics weathered on the ground. MP concentrations in estuarine water samples were lower (1.4 -2.3 pieces / L in dry weather), and PET was predominant, at 52%-77%, indicating a dominant contribution from sewage effluent. Following rainfall, MP concentrations in the estuarine water increased to 1.8-4.3 pieces / L, and PEPD, in particular, increased significantly, with a proportion of 43%-52%, indicating the contribution of MPs derived from street runoff. Although analyses of molecular markers of sewage, i.e., linear alkylbenzenes and coprostanol, confirmed the input of combined sewer overflow (CSO) to the estuarine water, we did not observe any significant increase in PET fiber MPs, indicating that there was no significant increase in the contribution of MPs from sewage including CSO to the estuarine waters after a rain event. This study highlights the importance of street runoff as a source of MPs in urban aquatic environments. Further investigation should be performed to quantitatively access the individual sources and processes.

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Section: Sample Collectionmentioning

confidence: 99%

Microplastics in urban wastewater and estuarine water: Importance of street runoff

Sugiura

Takada

et al. 2021

EMCR

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“…When the sewage volume in a combined sewer system can exceed the capacity of WWTP due to heavy rainfall or snowmelt, the combined sewage, which contains both wastewater and stormwater, is designed to overflow and discharge directly to nearby water bodies without treatment. These overflows, called combined sewer overflow (CSO), are a significant source of fecal pollution in water bodies in many urban areas [15][16][17][18][19] . According to USEPA 20 , discharge of CSO was estimated to be 20% of the total annual discharge of combined sewage in the United States.…”

Section: Introductionmentioning

confidence: 99%

Estimated discharge of antibiotic-resistant bacteria from combined sewer overflows of urban sewage system

et al. 2020

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Yearly discharge of antibiotic-resistant bacteria (ARB) from combined sewer overflow (CSO) was estimated. The volume of CSO was estimated from operating data of the pumping station. In the target sewer catchment, 23% of the total of the volume of combined sewage was discharged untreated as CSO. Combined sewage contained 3-log larger E. coli than secondary treatment effluent although the abundance of antibiotic-resistant E. coli was not significantly different. In the target-combined sewer catchment, a yearly total of 4.8 × 10 16 CFU of E. coli was discharged from 6.1 × 10 6 m 3 of CSO, while 1.3 × 10 12 CFU of E. coli from 2.1 × 10 7 m 3 of effluent from the wastewater treatment plant (WWTP). This E. coli discharge was equivalent to 7.9 × 10 9 CFU/m 3 from CSO, and 6.2 × 10 4 CFU/m 3 from WWTP effluent. Consequently, a yearly total discharge of antibiotic-resistant E. coli from CSO was 3.7-log larger than the WWTP effluent. The small-flow CSO events, which had hourly flow rate smaller than five times of the average dryweather flow, accounted for 43% of the total CSO volume, but 79% of the total discharge of antibiotic-resistant E. coli due to a small dilution factor with stormwater and frequent discharge. Reduction of small-flow CSO events would be important for effective reduction of ARB discharge from CSO.

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“…Table 1 summarizes the information of target rainfalls and sampling date and time. We performed sampling campaigns for several consecutive days after rainfall events, as previously described in the literature [24,25]. We also collected samples on October 18, 2018, under dry weather condition.…”

Section: Study Area and Coastal Water Samplingmentioning

confidence: 99%

Fate Evaluation of CSO-derived PPCPs and <i>Escherichia coli</i> in Tokyo Coastal Area after Rainfall Events by a Three-dimensional Water Quality Model

Poopipattana

Furumai

2021

J. of Wat. & Envir. Tech.

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This study developed a fate model of pharmaceuticals and personal care products (PPCPs), including acetaminophen, caffeine, and crotamiton, derived from combined sewer overflow (CSO) in the Tokyo coastal area. The target PPCPs were proposed as promising sewage markers having different persistency during treatment processes and in the environmental water. The PPCP model consists of hydrodynamic calculations and environmental kinetics by biodegradation and photodegradation. We considered inputs from pumping stations, sewage treatment plants, and urban rivers as CSO sources. We measured the PPCPs concentrations, Escherichia coli, and salinity in the collected surface water samples from several locations around Tokyo coastal area for consecutive days after rainfall events in October 2017 (113 mm), June 2018 (81 mm), and July 2018 (67 mm). We found high correspondence between simulation and monitoring results on E. coli and three PPCPs in the coastal locations for all events, suggesting that the model has the potential to quantitatively evaluate CSO-derived contaminants in the Odaiba Seaside Park and nearby locations. Simulation showed that acetaminophen concentration rapidly declined due to its susceptibility to sunlight and biodegradation. Caffeine and E. coli showed different attenuation rates, whereas crotamiton concentration did not change because of its comparable concentration level in CSO.

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Spatial Distribution and Temporal Change of PPCPs and Microbial Fecal Indicators as Sewage Markers after Rainfall Events in the Coastal Area of Tokyo

Cited by 15 publications

References 28 publications

Microplastics in urban wastewater and estuarine water: Importance of street runoff

Microplastics in urban wastewater and estuarine water: Importance of street runoff

Estimated discharge of antibiotic-resistant bacteria from combined sewer overflows of urban sewage system

Fate Evaluation of CSO-derived PPCPs and <i>Escherichia coli</i> in Tokyo Coastal Area after Rainfall Events by a Three-dimensional Water Quality Model

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