Modeling BOD Removal in Constructed Wetlands with Mixing Cell Method

Vogler, Eric T.; Scherfig, Jan; Chen, Shulin; Wang, Guang Te

doi:10.1061/(asce)0733-9372(2000)126:8(782)

Cited by 2 publications

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“…This makes the model inferior in as much as the real situation is concerned. There after a number of models were suggested to study the problem and for an excellent discussion on various models, one may refer to Masch and Associates (1970), Vogler and Scherfig (2000), Morley (1979), Orlob (1983).…”

Section: Model Frameworkmentioning

confidence: 99%

Ecological study of river Suswa: modeling DO and BOD

Bhutiani

Khanna

2006

Environ Monit Assess

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In this paper limnological status of river Suswa was observed for a period of two years. A water quality Beck modified Khanna Bhutiani model (BMKB model) was developed to calculate DO (dissolved Oxygen) and BOD (biochemical oxygen demand). The model was developed to calculate DO and BOD by using DO/BOD of same place and upstream in previous season which results in Single output. This model gives the seasonal value on the basis of previously taken upstream and downstream observations/concentrations of DO and BOD. The model was calibrated and verified for the water quality data (Physico-chemical data) of samples collected from river Suswa in different seasons. The model gave good agreement between data observed by it and the data observed manually, thus substantiating the validity of the model. Only minor differences were observed in physical, chemical and heavy metals of all the four sampling stations during the course of study.

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Section: Model Frameworkmentioning

confidence: 99%

Ecological study of river Suswa: modeling DO and BOD

Bhutiani

Khanna

2006

Environ Monit Assess

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“…Simulations were used to predict the performance of CWs using a direct plug flow reactor model [1], a plug flow with axial dispersion model (PFD) [4,[6][7][8], a stirred tank in series model [9] or a combination of these models [10]. One of the most limiting factors in predicting CWs efficiency was identified as the hydraulic behavior governed by environmental conditions [11,12].…”

Section: Introductionmentioning

confidence: 99%

Modeling the Effect of Plants and Peat on Evapotranspiration in Constructed Wetlands

Chazarenc

Naylor

Comeau

et al. 2010

International Journal of Chemical Engineering

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Evapotranspiration (ET) in constructed wetlands (CWs) represents a major factor affecting hydrodynamics and treatment performances. The presence of high ET was shown to improve global treatment performances, however ET is affected by a wide range of parameters including plant development and CWs age. Our study aimed at modelling the effect of plants and peat on ET in CWs; since we hypothesized peat could behave like the presence of accumulated organic matter in old CWs. Treatment performances, hydraulic behaviour, and ET rates were measured in eight 1 m 2 CWs mesocosm (1 unplanted, 1 unplanted with peat, 2 planted with Phragmites australis, 2 planted with Typha latifolia and 2 planted with Phragmites australis with peat). Two models were built using first order kinetics to simulate COD and TKN removal with ET as an input. The effect of peat was positive on ET and was related to the better growth conditions it offered to macrophytes. Removal efficiency in pilot units with larger ET was higher for TKN. On average, results show for COD a k 20 value of 0.88 d −1 and 0.36 d −1 for TKN. We hypothesized that the main effect of ET was to concentrate effluent, thus enhancing degradation rates.

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Modeling BOD Removal in Constructed Wetlands with Mixing Cell Method

Cited by 2 publications

References 0 publications

Ecological study of river Suswa: modeling DO and BOD

Ecological study of river Suswa: modeling DO and BOD

Modeling the Effect of Plants and Peat on Evapotranspiration in Constructed Wetlands

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