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ID 47643
file
creator
Yamauchi, Takahiro
subject
WWTP
PAHs
sewage
urban surface
rainfall
discharge
abstract
Polycyclic aromatic hydrocarbons (PAHs) are common contaminants present in wastewater, and determination of their sources is important for their management in the environment. In this study, stormwater loading of PAHs during rainfall periods was evaluated for sewage inflow into a wastewater treatment plant for separate sewer system. To accomplish this, sewage inflow volumes, suspended solid concentrations, and PAH concentrations were measured during eight rainfall events and on two no-rainfall days at the inlet of the plant. Based on a comparison between the rainfall and no-rainfall loading quantified by the measurements, excess PAH loadings with stormwater were evaluated for the rainfall events. The relationship between rainfall intensity and stormwater loading was then used to evaluate long-term stormwater loadings of water and PAHs. Their contributions to the sewage inflow were 0.7 % and 1.0 % for one-year for water and the sum of 16 measured PAHs, respectively. Our measurements and estimates demonstrate that direct stormwater inflow is not a primary source of PAHs to the plant for this separate sewer system.
description
This work was supported by Japan Society for the Promotion of Science KAKENHI Grant Numbers 19760372.
journal title
Water Science & Technology
volume
Volume 79
issue
Issue 7
start page
1426
end page
1436
date of issued
2019-04-22
publisher
IWA Publishing
issn
0273-1223
1996-9732
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
author
rights
(c) IWA Publishing 2019. This is preprint of an article submitted for consideration in 'Water Science & Technology'.
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
relation url
department
Graduate School of Engineering
note
Post-print version/PDF may be used in an institutional repository after an embargo period of 12 months.