The removal of nitrogen and organics in vertical flow wetland reactors: predictive models

Saeed, Tanveer, and Sun, Guangzhi (2011) The removal of nitrogen and organics in vertical flow wetland reactors: predictive models. Bioresource Technology, 102 (2). pp. 1205-1213.

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Abstract

Three kinetic models, for predicting the removal of nitrogen and organics in vertical flow wetlands, have been developed and evaluated. These models were established by combining first-order, Monod and multiple Monod kinetics with continuous stirred-tank reactor (CSTR) flow pattern. Critical evaluations of these models using three statistical parameters, coefficient of determination, relative root mean square error and model efficiency, indicated that when the Monod/multiple Monod kinetics was combined with CSTR flow pattern it allowed close match between theoretical prediction and experiment data of nitrogen and organics removal. The kinetic coefficients (derived from Monod/multiple Monod kinetics) was found to increase with pollutant loading, indicating that the coefficients may vary based on different factors, such as influent pollutant concentration, hydraulic loading, and water depth. Overall, this study demonstrated the validity of combining Monod and multiple Monod kinetics with CSTR flow pattern for the modelling and design of vertical flow wetland systems.

Item ID: 18184
Item Type: Article (Refereed Research - C1)
Keywords: constructed wetlands; kinetic coefficients; nitrogen; organics; predictive models
ISSN: 1873-2976
Date Deposited: 30 Aug 2011 05:06
FoR Codes: 09 ENGINEERING > 0907 Environmental Engineering > 090702 Environmental Engineering Modelling @ 50%
09 ENGINEERING > 0905 Civil Engineering > 090509 Water Resources Engineering @ 50%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970109 Expanding Knowledge in Engineering @ 100%
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