Estimating phosphorus removal in lakes using marsh wetlands

    Authors

    F. N. Nnadi;D. Addasi

    Comments

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    Abbreviated Journal Title

    J. Environ. Sci. Health Part A-Toxic/Hazard. Subst. Environ. Eng.

    Keywords

    wetlands; lakes; model; phosphorus; removal efficiency; removal rate; constant; hydraulic loading rate; Engineering, Environmental; Environmental Sciences

    Abstract

    The objective of this study was to develop a modified simplest seasonal model that predicts phosphorus removal efficiency for lakes using marsh wetland system using lake waters. The proposed model calculates the wetland removal efficiency and total outflow phosphorus (TPout) concentration as a function of the soluble and nonsoluble reactive phosphorus (SRP and NSRP respectively) while considering the accumulation mechanisms. The observed and predicted TPout concentrations compared reasonably which suggest that empirical models can be adapted to estimate the phosphorus removal efficiency of the marsh wetlands. The results also indicate that TPout concentrations decreased exponentially with time through the wetland and decreasing the surface hydraulic loading rate of the system would increase the removal efficiency of phosphorus. It was observed that about 78% of the total phosphorus and 77% of the soluble phosphorus content within the water column was removed with about 19% of the total phosphorus removed within the first 5 days (13% of the system detention time).

    Journal Title

    Journal of Environmental Science and Health Part a-Toxic/Hazardous Substances & Environmental Engineering

    Volume

    34

    Issue/Number

    2

    Publication Date

    1-1-1999

    Document Type

    Article

    Language

    English

    First Page

    405

    Last Page

    422

    WOS Identifier

    WOS:000078993200012

    ISSN

    1093-4529

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