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ACCUMULATION EFFECT OF INTERMITTENT SEDIMENT DISTURBANCE ON PHOSPHORUS MIGRATION IN STATIC WATER

Yong Huang

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Abstract

Intermittent sediment disturbance in static water was simulated continuously to investigate the accumulation effect of intermittent disturbance on phosphorus(P) migration in overlying water.The results show that the concentrations of soluble reactive P(SRP),dissolved total P(DTP),bio-available particulate P(BAPP) and bio-available P(BAP) decreased markedly with increasing disturbance time.After the fifth disturbance,SRP,DTP,BAPP,BAP decreased by 84.26%,71.60%,59.21%,62.26% respectively,compared to the first disturbance.The average proportion of SRP in DTP declined from 83.31%(the first disturbance) to 49.38%(the fifth disturbance) by physi-sorption and chemi-sorption due to sediment disturbance.Moreover,intermittent sediment disturbance might restrain the transformation of P from BAPP to DTP,and hopefully reduce the risk of eutrophication.

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What this paper is about

Intermittent sediment disturbance in static water was simulated continuously to investigate the accumulation effect of intermittent disturbance on phosphorus(P) migration in overlying water.The results show that the concentrations of soluble reactive P(SRP),dissolved total P(DTP),bio-available particulate P(BAPP) and bio-available P(BAP) decreased markedly with increasing disturbance time.After the fifth disturbance,SRP,DTP,BAPP,BAP decreased by 84.26%,71.60%,59.21%,62.26% respectively,compared to the first disturbance.The average proportion of SRP in DTP declined from 83.31%(the first disturbance) to 49.38%(the fifth disturbance) by physi-sorption and chemi-sorption due to sediment disturbance.Moreover,intermittent sediment disturbance might restrain the transformation of P from BAPP to DTP,and hopefully reduce the risk of eutrophication.

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Available abstract

Intermittent sediment disturbance in static water was simulated continuously to investigate the accumulation effect of intermittent disturbance on phosphorus(P) migration in overlying water.The results show that the concentrations of soluble reactive P(SRP),dissolved total P(DTP),bio-available particulate P(BAPP) and bio-available P(BAP) decreased markedly with increasing disturbance time.After the fifth disturbance,SRP,DTP,BAPP,BAP decreased by 84.26%,71.60%,59.21%,62.26% respectively,compared to the first disturbance.The average proportion of SRP in DTP declined from 83.31%(the first disturbance) to 49.38%(the fifth disturbance) by physi-sorption and chemi-sorption due to sediment disturbance.Moreover,intermittent sediment disturbance might restrain the transformation of P from BAPP to DTP,and hopefully reduce the risk of eutrophication.

Key concepts: Disturbance (geology), Eutrophication, Sediment, Phosphorus, Sorption, Environmental science, Environmental chemistry, Chemistry

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