THE FIRST FLUSH ANALYSIS OF STORMWATER RUNOFF IN A HUMID CLIMATE

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-03-08 DOI:10.3846/jeelm.2023.18064

R. Mastouri, Hassan Pourfallah Koushali, M. Khaledian

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引用次数: 0

Abstract

This study focuses on the pollutants from urban runoff to Zarjoob River, which is one of the rivers leading to Anzali International Wetland, which was listed in the Montreux Record in 1993 as a site in need of priority conservation. Storm water runoff from a residential area in Rasht (the largest city on Iran’s Caspian Sea coast) was monitored in this study during thirteen rainfall events, with a total of 58 storm runoff samples collected from 2018 to 2019. In most rainfall events, the mean concentration of total suspended solids (TSS) and chemical oxygen demand (COD) were higher than the other pollutants. The event mean concentrations (EMC) of TSS loads ranged from 57.3 mg/L to 682.5 mg/L and from 46.7 mg/L to 590.4 mg/L for COD. The site mean concentrations (SMC) for TSS, COD, total phosphorus (Total P), nitrate-nitrogen (NO3-N), and total lead (Pb) were 219, 205, 1.91, 20.63, and 0.25 mg/L, respectively. The first flush coefficient (b) was used to evaluate the first flushing of various events. The results of the study confirmed that the first flush occurred in all events, and the average ranking of first flush strength among the pollutants was COD > NO3-N > TP > Pb > TSS. Controlling one-third of the initial runoff volume appeared to be critical for managing the quality of urban rivers in humid regions. The findings of this study can be applied to urban runoff management strategies in cities with similar climatic conditions.

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首次对潮湿气候下的雨水径流进行冲洗分析

本研究的重点是城市径流流入扎尔朱布河的污染物，扎尔朱布河是通往安扎利国际湿地的河流之一，该湿地于1993年被列入蒙特勒记录，需要优先保护。本研究在2018年至2019年期间监测了拉什特(伊朗里海沿岸最大的城市)一个居民区的暴雨径流，共收集了58个暴雨径流样本。在大多数降雨事件中，总悬浮物(TSS)和化学需氧量(COD)的平均浓度高于其他污染物。TSS负荷的事件平均浓度(EMC)在57.3 ~ 682.5 mg/L之间，COD在46.7 ~ 590.4 mg/L之间。TSS、COD、总磷(total P)、硝态氮(NO3-N)和总铅(Pb)的站点平均浓度(SMC)分别为219、205、1.91、20.63和0.25 mg/L。第一次冲洗系数(b)用于评估各种事件的第一次冲洗。研究结果证实，所有事件均发生首次冲刷，污染物首次冲刷强度的平均排序为COD > NO3-N > TP > Pb > TSS。控制三分之一的初始径流量似乎对管理潮湿地区城市河流的质量至关重要。本研究结果可应用于具有类似气候条件的城市径流管理策略。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.