Sediment pollution characteristics and in situ control in a deep drinking water reservoir

Zhou, Zizhen; Li, Yang; Wei-xing, MA; Zhou, Shilei; Long, Sheng-hai

doi:10.1016/j.jes.2016.05.006

Cited by 19 publications

(11 citation statements)

References 27 publications

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“…This variation was nearly the same as those in the water column, indicating that nitrogen, both in water and sediment, were removed by bacteria involved in the nitrogen cycle. This phenomenon has also been confirmed by the literature [4]. TP concentrations in sediment remained at 800-900 mk/kg, because the phosphorus was an inert element.…”

Section: The Fate Of Pollutantssupporting

confidence: 83%

“…In terms of sediment samples from the three sites, 0.5 cm was collected from the uppermost layer using a stratified sediment sampler [4]. All samples were refrigerated and dried for analysis and determination.…”

Section: Reservoir For Field Research and Sampling Methodsmentioning

confidence: 99%

“…The organic matter content in the sediment was estimated as weight loss by ignition (LOI %) at 550 • C for 5 h [4]. To measure Fe and Mn, sediment samples were digested with a HCl-HNO 3 -HF-HClO 4 mixture and then analyzed via ICP-MS (Thermo, Waltham, MA, USA) [18].…”

Section: Determination Methods Of Physicochemical Indexmentioning

confidence: 99%

“…Reservoir operation strategies affect biogeochemical processes associated with the cycling of nutrients, particularly nitrogen and organic matter [2,3]. Water quality problems have often been associated with algal overproduction, leaching of pollutants from sediments, and incoming storm water runoff [4]. These mechanisms may seriously compromise the safety of a water supply.…”

Section: Introductionmentioning

confidence: 99%

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Water Quality Responses during the Continuous Mixing Process and Informed Management of a Stratified Drinking Water Reservoir

Zhou

Gong

et al. 2019

Sustainability

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Aeration and mixing have been proven as effective in situ water quality improvement methods, particularly for deep drinking water reservoirs. While there is some research on the mechanism of water quality improvement during artificial mixing, the changes to water quality and the microbial community during the subsequent continuous mixing process is little understood. In this study, we investigate the mechanism of water quality improvement during the continuous mixing process in a drinking water reservoir. During this period, we found a reduction in total nitrogen (TN), total phosphorus (TP), ammonium-nitrogen (NH4-N), iron (Fe), manganese (Mn), and total organic carbon (TOC) of 12.5%–30.8%. We also measured reductions of 8.6% and 6.2% in TN and organic carbon (OC), respectively, in surface sediment. Microbial metabolic activity, abundance, and carbon source utilization were also improved. Redundancy analysis indicated that temperature and dissolved oxygen (DO) were key factors affecting changes in the microbial community. With intervention, the water temperature during continuous mixing was 15 °C, and the mixing temperature in the reservoir increased by 5 °C compared with natural mixing. Our research shows that integrating and optimizing the artificial and continuous mixing processes influences energy savings. This research provides a theoretical basis for further advancing treatment optimizations for a drinking water supply.

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Section: The Fate Of Pollutantssupporting

confidence: 83%

Section: Reservoir For Field Research and Sampling Methodsmentioning

confidence: 99%

Section: Determination Methods Of Physicochemical Indexmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Water Quality Responses during the Continuous Mixing Process and Informed Management of a Stratified Drinking Water Reservoir

Zhou

Gong

et al. 2019

Sustainability

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“…Heavy metal pollution is one of the most serious environmental issues that has accompanied rapid global economic development [1]. For example, heavy metal pollution in aquatic systems poses a significant risk to human health because heavy metals are not biodegradable and may thus affect the ecological food chain [1,2]. In general, heavy metal pollution occurs when industrial processes (including water purification or treatment) generate waste that is released into the environment.…”

Section: Introductionmentioning

confidence: 99%

Drinking water sludge of the Moroccan capital: Statistical analysis of its environmental aspects

Dahhou

Moussaouiti

Morhit

et al. 2017

Journal of Taibah University for Science

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This paper uses a statistical approach to evaluate the degree of metal pollution, trace element concentrations, and seasonal evolutions of various physicochemical parameters of Moroccan drinking water sludge. Principal component analysis (PCA) was used to analyze these physicochemical parameters (including water temperature (Tw), volatile suspended solids (VSS), and suspended matter (SM)) in liquid raw sludge, the conductivity (Cond(s) and pH(s)) in addition to the trace element content of the supernatant (e.g., Cd(s), Pb(s), Cr(s)), pH and heavy metal and trace element contents (e.g., Pb, Cr, Cd, Fe, Al, Cu, Zn, P, N, K and C) in dried hydroxide sludge. The measured quantities of Cd and Cr in the supernatant did not exceed their recommended limits in wastewater treated for irrigation; however, the amount of Zn, Pb and Cu measured in dried hydroxide sludge exceeded their limits as defined by international standards. PCA reveals that the principal component F1 indicates that 25.20% of all variance can be mostly attributed to Zn content and conductivity, while the principal component F2 demonstrates that 21.00% of all variance is likely caused by the previously mentioned physicochemical parameters, most significantly C and pH(s). Finally, this paper analyses the merits of this analytical approach and discusses its important applications for solving crucial environmental issues.

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Sediment pollution in an urban water supply lake in southern Brazil

Andrade

Coelho

Hassan

et al. 2018

Environ Monit Assess

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Sediment pollution characteristics and in situ control in a deep drinking water reservoir

Cited by 19 publications

References 27 publications

Water Quality Responses during the Continuous Mixing Process and Informed Management of a Stratified Drinking Water Reservoir

Water Quality Responses during the Continuous Mixing Process and Informed Management of a Stratified Drinking Water Reservoir

Drinking water sludge of the Moroccan capital: Statistical analysis of its environmental aspects

Sediment pollution in an urban water supply lake in southern Brazil

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