Phosphorus storage dynamics and adsorption characteristics for sediment from a drinking water source reservoir and its relation with sediment compositions

Tang, Xianqiang; Wu, Min; Dai, Xichang; Chai, Peihong

doi:10.1016/j.ecoleng.2014.01.005

Cited by 79 publications

(27 citation statements)

References 36 publications

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“…Improved phosphorus bioavailability may trigger the outburst of potentially harmful algae in the Danjiangkou Reservoir, because phosphorus had already been identified as a limiting factor for algal bloom (Li et al 2009). Moreover, algal bloom frequency increased in the WL fluctuating zone (Xiong and Liao 2003;Tang et al 2014a;Wengrove et al 2015), because of an increase in phosphorus availability. It could be seen that WL regulation plays an important role in aquatic nutrient geochemistry.…”

Section: Water Level Regulation Effectsmentioning

confidence: 97%

“…In 2012, seven sediment samples as well as corresponding overlying water samples were collected from the upstream to the downstream areas of the Danjiangkou Reservoir. Subsequent nutrient survey results suggested that the water quality of the major water body of the Danjiangkou Reservoir is relatively good, but some bays such as Shendinghe Estuary were heavily eutrophic (Tang et al 2014a). Nutrients located within the Shendinghe Estuary sediment exhibited a high release potential, in particular during WL regulation (Tang et al 2014b).…”

Section: Case Study Site and Preparations For The Experimentsmentioning

confidence: 98%

“…The phosphorus adsorption capacity of the Danjiangkou Reservoir sediment is closely related to the active iron content in the sediment (Tang et al 2014a). Phosphorus release from sediment involved the reductive dissolution of ferrous hydroxides when surface sediment becomes anoxic.…”

Section: Potential Effects Of Water Level Regulation On Phosphorus Dymentioning

confidence: 98%

“…In May 2013, the water level for the Danjiangkou Reservoir was 146 m. Representative continuously submerged and intermittently submerged sediment samples were collected again from the Shendinghe Estuary (sampling location are indicated in Fig. 1; Tang et al 2014a) 2 m lower and 1 m higher than the water surface, which was located on the WL line of 144 and 147 m, respectively. At the mean time, 30 L of overlying water were collected at an approximate depth of 30 cm as representative water samples (Ministry of Environmental Protection 2002) around the continuously submerged sediment sampling sites.…”

Section: Case Study Site and Preparations For The Experimentsmentioning

confidence: 99%

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Impact of Simulated Water Level Regulation on Sediment Nutrient Release

Tang¹,

Wu²,

Yang³

et al. 2015

Water Air Soil Pollut

Self Cite

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Representative sediment samples rich in nitrogen and phosphorus (both continuous and intermittently submerged) were used to conduct dynamic water level (WL) regulation experiments with various WL velocity modes (0, 3, and 6 cm/day). The experiments lasted three WL regulating cycles (6 months), and each single cycle included four WL dynamic phases: decline, stable, ascend, and re-stable. During the experiment, a greater nutrient stock caused higher nutrient release fluxes for continuously submerged sediments when compared to corresponding intermittently submerged sediments regardless of WL regulation. Moreover, continuous submerged sediment nutrient release showed a similar BUp attern to the intermittently submerged sediment, and nutrient concentrations within the water phase generally increased with rising WL and decreased with dropping WL. Rapid WL regulation such as 6 cm/day promoted nitrogen release, and slow WL regulation at 3 cm/day favored phosphorus leaching. When three WL regulation cycles were finished, WL regulation of 6 cm/day resulted in 18 and 25 % decline of sediment mean organic matter (OM) content for continuous and intermittently submerged sediment, respectively. However, increased WL regulation cycles impacted on sediment nitrogen and phosphorus stock in different manners. For example, a WL regulation of 6 cm/day led to a 582 mg/kg decline and 322 mg/kg increase for intermittently submerged sediment in terms of total nitrogen (TN) and total phosphorus (TP) content, respectively. Results indicated that direct WL regulation insignificantly affected sediment nutrient release, but changed the overlying water conditions such as pH and redox potential (redox), and then indirectly changed the nutrient release dynamics.

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Section: Water Level Regulation Effectsmentioning

confidence: 97%

Section: Case Study Site and Preparations For The Experimentsmentioning

confidence: 98%

Section: Potential Effects Of Water Level Regulation On Phosphorus Dymentioning

confidence: 98%

Section: Case Study Site and Preparations For The Experimentsmentioning

confidence: 99%

See 2 more Smart Citations

Impact of Simulated Water Level Regulation on Sediment Nutrient Release

Tang¹,

Wu²,

Yang³

et al. 2015

Water Air Soil Pollut

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, source control is not always possible, especially if diffuse sources such as lake sediments are relevant (Dittrich et al, 2011). Sediments in lakes are considered as a sink of nutrients, and the supply of P from sediments can play a vital role in the eutrophication of water bodies (Chapra and Robertson, 1977;Tang et al, 2014;Smith et al, 1999;Wang et al, 2009;Beutel et al, 2008;Kop a cek et al, 2005;Ahlgren et al, 2005). The exogenous phosphorus input will gradually be put under control by cutting-off of pollutant discharge and strengthening the ecological restoration.…”

Section: Introductionmentioning

confidence: 99%

Studies on the treatment efficiency of sediment phosphorus with a combined technology of PCFM and submerged macrophytes

Zhang

Xia

et al. 2015

Environmental Pollution

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The influence of dam construction on water quality in the lower Geum River, Korea

Shim¹,

Yoon

2018

Environmental Quality Mgmt

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The Geum River has been faced with extreme environmental change due to the construction of three dams in midstream since 2012 (Four Major River Restoration Project). We hypothesized that suspended solids (SS) and total particulate phosphorus (TPP) decreased after the dam construction. To test our hypothesis, we investigated the influence of the dam construction on water quality by measuring possible impacts of decreasing SS, total phosphorus (TP), and TPP on the ecosystem in the lower Geum River and the Geum River estuary. For this study, we chose one site to compare the monthly water quality data pre‐construction (2008) and post‐construction (2015). Dissolved oxygen and pH were not significantly different between pre‐ and post‐construction, while electric conductivity (EC) increased. The increase in the EC may be related to a decrease in river discharge (RD) after the dam construction. As we expected, TP and TPP decreased post‐construction, but SS did not show significant differences between pre‐ and post‐construction. This suggests that the decline of TPP concentrations post‐construction were not related to SS levels. The explosive algal bloom and sedimentation of the algae may be an important factor in explaining the decrease in TP and TPP. The decline of SS, TP, and TPP flux to the lower Geum River was observed. This could be a potential reason for the erosion of the mud flat of the Geum River estuary in the future. Therefore, to determine the long‐term effects of the SS and the phosphorus fluxes to the lower Geum River, these factors should be monitored periodically over longer periods of time than this study.

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Phosphorus storage dynamics and adsorption characteristics for sediment from a drinking water source reservoir and its relation with sediment compositions

Cited by 79 publications

References 36 publications

Impact of Simulated Water Level Regulation on Sediment Nutrient Release

Impact of Simulated Water Level Regulation on Sediment Nutrient Release

Studies on the treatment efficiency of sediment phosphorus with a combined technology of PCFM and submerged macrophytes

The influence of dam construction on water quality in the lower Geum River, Korea

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