NUMERICAL SIMULATION OF FLOW AND BIOKINETIC PROCESSES IN SUBSURFACE FLOW CONSTRUCTED WETLANDS: A SYSTEMATIC REVIEW

CWM1: a general model to describe biokinetic processes in subsurface flow constructed wetlands.

This paper presents the Constructed Wetland Model No1 (CWM1), a general model to describe biochemical transformation and degradation processes for organic matter, nitrogen and sulphur in subsurface flow constructed wetlands. The main objective of CWM1 is to predict effluent concentrations from constructed wetlands without predicting gaseous emissions. CWM1 describes aerobic, anoxic and anaerobi...

Recent developments in numerical modelling of subsurface flow constructed wetlands.

Numerical modelling of subsurface flow constructed wetlands (CWs) gained increasing interest during the last years. The main objective of the modelling work is, on the one hand, to increase the insight in dynamics and functioning of the complex CW system by using mechanistic or process based models that describe transformation and degradation processes in detail. As these mechanistic models are...

Subsurface Flow Constructed Wetlands for Wastewater Treatment

Enhancing Oxygen Transfer in Subsurface-Flow Constructed Wetlands

Conventional subsurface-flow constructed wetlands (SFCW) for wastewater treatment are typically designed as horizontal plug-flow vegetated beds. Limited oxygen, provided mostly by slow transfer through air–water interface, turns these systems anaerobic, thus requiring a long hydraulic retention time (HRT) to achieve desired effluent quality. A SFCW treatment system with biofield effluent dispos...

Numerical Analysis of the Performance of Horizontal and Wavy Subsurface Flow Constructed Wetlands

A three-dimensional numerical model is proposed for modeling the TP transport in the Horizontal Subsurface Flow (HSSF) and Wavy subsurface Flow (WSSF) constructed wetland in this article. Both numerical simulations and physical experiments indicate that the removal efficiency of WSSF is higher than that of HSSF. The difference of performance in removing pollutants, e.g., Total Phosphorus (TP), ...