Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Experimental Research on Residual Chlorine Removal from Stormwater

Version 1 : Received: 26 February 2024 / Approved: 26 February 2024 / Online: 26 February 2024 (16:53:34 CET)

A peer-reviewed article of this Preprint also exists.

Valentukeviciene, M.; Andriulaityte, I.; Karczmarczyk, A.; Zurauskiene, R. Removal of Residual Chlorine from Stormwater Using Low-Cost Adsorbents and Phytoremediation. Environments 2024, 11, 101. Valentukeviciene, M.; Andriulaityte, I.; Karczmarczyk, A.; Zurauskiene, R. Removal of Residual Chlorine from Stormwater Using Low-Cost Adsorbents and Phytoremediation. Environments 2024, 11, 101.

Abstract

In recent decade water pollution by micropollutants is an increasing environmental concern. Since 2019, due to COVID-19 pandemic, increased stormwater pollution by chlorine based disinfectants has been determined. Research aimed to treat of chlorine contaminated stormwater after outdoors spaces disinfection are very limited. Runoff from disinfected areas and residual chlorine present in stormwater are transported to surface water bodies. Residual chlorine reacts with dissolved organic compounds in water and results the formation of environmentally toxic disinfection by-products. Studies present event low residual chlorine concentrations may pose a risk to aquatic flora and fauna. In this study the efficiency of different filter materials, including peat, wood chips, sawdust (column tests) and ceramzites Leca, Pollytag, Polski, Ceski (batch tests), in retaining residual chlorine were tested in laboratory scale batch and flow through experiment. The best efficiency to retain chlorine presented sawdust (96 %) and ceramzite Leca (76 %). The plants abilities to reduce pollution by chlorine was analyzed in raised garden bed. Research results will contribute to future studies aimed to retain various micropollutants in stormwater using remediation technologies.

Keywords

micropollutants; residual chlorine; stormwater treatment; remediation technologies

Subject

Environmental and Earth Sciences, Environmental Science

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