Inderscience Publishers

Modelling of sediment nutrient fluxes for a pulsed organic load

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A sediment model has been developed to simulate the Sediment Oxygen Demand (SOD) and sediment nutrient fluxes after a sudden input of Particulate Organic Matter (POM). Compared with previous sediment models, the main advances are the use of a continuous function to represent the kinetics of POM diagenesis and inclusion of the biomass content in POM diagenesis. Laboratory experiments were also carried out to investigate the SOD dynamics and sediment nutrient fluxes after an input of fish food pellets into the sediment. The simulation results of SOD and nutrient fluxes compared fairly well with the experimental measurements.

Keywords: ammonia nitrogen, dissolved oxygen, nutrients, SOD, sediment oxygen demand, sediment flux, water quality, modelling, water pollution, sediment nutrient fluxes, pulsed organic load

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