Flocculated sediments can reduce the size of sediment basin at construction sites

Kang, Jin-Ku; King, S.E.; McLaughlin, Richard A.

doi:10.1016/j.jenvman.2015.10.049

Cited by 6 publications

(2 citation statements)

References 21 publications

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“…Another design tool, SEDspread, was developed in a spreadsheet format to facilitate sizing and visualizing sediment basins and their associated components (Perez et al, 2016b). Based on lab-scale experiments in which setting velocities of fine textures soils were doubled though addition of PAM, Kang et al (2016) presented in several studies published in 2016 aimed to address this problem. While case studies were presented to demonstrate the application of these tools, study authors call for additional testing and validation.…”

Section: Erosion and Sediment Controlmentioning

confidence: 99%

Urban Stormwater Characterization, Control, and Treatment

Moore¹,

Rodak²,

Vogel³

2017

Water Environment Research

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A summary of 246 studies published in 2016 on topics related to the characterization and management of urban stormwater runoff is presented in the following review. The review is structured along three major topical areas: (1) general characterization of stormwater quantity and quality; (2) engineered systems for stormwater control and treatment, including erosion and sediment control practices, constructed stormwater ponds and wetlands, bioretention, permeable pavement, greenroofs, and rainwater harvesting and (3) watershedscale application of stormwater treatment and control practices. Common research themes and needs highlighted throughout this review include efforts to better understand stormwater transport and treatment mechanisms and their representation in models, advancements to optimize the design of stormwater control measures to meet specific hydrologic and/or water quality targets, and increasing understanding of the biophysical and social factors that influence watershed-scale implementation of low impact development and other stormwater control measures.

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Section: Erosion and Sediment Controlmentioning

confidence: 99%

Urban Stormwater Characterization, Control, and Treatment

Moore¹,

Rodak²,

Vogel³

2017

Water Environment Research

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“…In the flocculation process, with the addition of flocculants into the suspension, unstable particles form due to charge neutralization mechanism and aggregate into flocs by adsorption bridging and enmeshment mechanisms (Kim et al 2001). Subsequently, particles and flocs are removed via solid-liquid separation in the sedimentation process, resulting in the decrease of residual turbidity (Yao et al 2014;Kang et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Effect of hydrodynamic breakage on floc evolution and turbidity reduction in flocculation and sedimentation processes

et al. 2021

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Coagulation and sedimentation process is one of the most popular processes in drinking water treatment. Hydrodynamic breakage has a significant impact on the evolution of floc characteristic and the efficiency of turbidity removal. In this work, the effects of hydrodynamic breakage on floc size, fractal dimension, and floc morphology were investigated with an in-situ recognition system. The experiments were conducted in a continuous flocculation and sedimentation reactor equipped with perforated plates to provide different hydrodynamic breakage conditions. The experimental results indicated that the hydrodynamic conditions significantly influenced the floc destabilization and restructuring processes. A low hydrodynamic shear forces provided by P1 led to the increase of both bigger sized flocs but accompanied with small particles (0–10 μm). Excessive velocity gradient provided by P3 produced smaller and looser flocs. An appropriate velocity gradient (i.e., the flow velocity through the perforated plate P2 at 18.9 × 10−3m s−1) was conducive for the formation of larger and more compact structures, with higher average floc size and fractal dimension. This flocculation condition in turn resulted in effective improvements in the turbidity removal efficiency. Floc evolution models were described based on the mechanism of the breakage and restructuring process.

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Polyacrylamide and Chitosan Biopolymer for Flocculation and Turbidity Reduction in Soil Suspensions

Kang

McLaughlin

2020

J Polym Environ

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Flocculated sediments can reduce the size of sediment basin at construction sites

Cited by 6 publications

References 21 publications

Urban Stormwater Characterization, Control, and Treatment

Urban Stormwater Characterization, Control, and Treatment

Effect of hydrodynamic breakage on floc evolution and turbidity reduction in flocculation and sedimentation processes

Polyacrylamide and Chitosan Biopolymer for Flocculation and Turbidity Reduction in Soil Suspensions

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