Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

A Numerical Investigation concerning the Effect of Step-Feeding on Performance of Constructed Wetlands Operating under Mediterranean Conditions

Version 1 : Received: 26 September 2023 / Approved: 26 September 2023 / Online: 27 September 2023 (05:15:46 CEST)

A peer-reviewed article of this Preprint also exists.

Liolios, K.A. A Numerical Investigation Concerning the Effect of Step-Feeding on Performance of Constructed Wetlands Operating under Mediterranean Conditions. Sustainability 2023, 15, 16675. Liolios, K.A. A Numerical Investigation Concerning the Effect of Step-Feeding on Performance of Constructed Wetlands Operating under Mediterranean Conditions. Sustainability 2023, 15, 16675.

Abstract

The effects of wastewater step-feeding on the performance of Horizontal Subsurface Flow Constructed Wetlands (HSF CWs) are numerically investigated. The purpose is to check if this alternative feeding technique increases the ability of HSF CWs to remove pollutants. Two methodologies are used: Initially, the Tanks-In-series (TIS) methodology, based on Finite Volume Method (FVM), is analyzed by using the volumetric degradation coefficient λ. In this case the operation of CW is similar with a series of Continuous Stirred-Tank Reactors (CSTR), under steady conditions. Then, the Step-Feeding (SF) procedure is presented, when the CW is operated like a Plug Flow Reactor (PFR). The results show that the SF procedure does not improve the performance of HSF CWs on removing Biochemical Oxygen Demand (BOD), operating under Mediterranean conditions.

Keywords

step-feeding; constructed wetlands; Tanks-In-Series; Continuous Stirred-Tank Reactor; Plug Flow Reactor; numerical investigation; Biochemical Oxygen Demand

Subject

Environmental and Earth Sciences, Water Science and Technology

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