continuous sedimentation Articles

  • Continuous simulation of suspended sediment through a stream section

    This paper presents the development of a one–dimensional stream water quality model for the continuous simulation of suspended sediment transport and deposition processes along a particular stream section. The model integrates stream hydraulics and suspended sediment transport and deposition processes. The stream hydraulic model was developed using the Muskingum–Cunge method of channel routing. ...


    By Inderscience Publishers

  • Sedimentation Processes

    Sedimentation is the process of allowing particles in suspension in water to settle out of the suspension under the effect of gravity. The particles that settle out from the suspension become sediment, and in water treatment is known as sludge. When a thick layer of sediment continues to settle, this is known as consolidation. When consolidation of sediment, or sludge, is assisted by mechanical ...


    By IWA Publishing

  • Sedimentation structures

    Sedimentation structures are measures, which purify the surface runoff with the principle of sedimentation. The separation of solid from rainwater discharge (divided sewer system) can be carried out through: grit chamber rainwater sedimentation tank vortex separator system The dimensioning of plants, that work with sedimentation is done according to the allowed ...


    By IWA Publishing

  • From sediment to tissue and tissue to sediment: An evaluation of statistical bioaccumulation models

    Biota–sediment accumulation factors (BSAFs) and biota–sediment accumulation regressions (BSARs) are statistical models that may be used to estimate tissue chemical concentrations from sediment chemical concentrations or vice versa. Biota–sediment accumulation factors and BSARs are used to fill tissue concentration data gaps, set sediment preliminary remediation goals (PRGs), and make ...


    By John Wiley & Sons, Ltd.

  • Modeling of Sedimentation in Stormwater Detention Basins

    ABSTRACTTo minimize the non-point source pollution from roadway surface, the Texas Department of Transportation (TxDOT) initiated a research project for design of a small footprint non-proprietary detention basin, which consists of pipes and box culvert sections with specialized inlet and outlet system. A conceptual model was developed to estimate particle removal efficiency of the rectangular ...

  • Sedimentation dynamics in combined sewer systems

    Sediments in combined sewers may negatively affect the performance of sewer systems and significantly promote the formation of hydrogen sulfide. To prevent this, German sewer systems are cleaned regularly but at high costs. In order to optimize the cleaning intervals, this study investigates how deposits build up and change over a defined period under constant conditions. The experiments were ...


    By IWA Publishing

  • Fountain creek sediment collector - case study

    An innovative sediment management method, a 30-ft wide, high capacity, Sediment Collector, is currently installed in Fountain Creek, Pueblo, Colorado upstream of the confluence with the Arkansas River.  This installation is intended to demonstrate a new technology available to reduce the need for dredging.  The purpose of the Sediment Collector is to demonstrate the capability to lower ...


    By Streamside, LLC.

  • Modelling of sediment nutrient fluxes for a pulsed organic load

    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 ...


    By Inderscience Publishers

  • Common Treatment Technologies for Inorganics in Soil, Sediment, and Sludge

    The most commonly used treatment technologies for inorganics in soil, sediment, and sludge include solidification/stabilization (S/S), excavation and off-site disposal, and acid extraction. These treatment technologies are described briefly below. Solidification processes produce monolithic blocks of waste with high structural integrity. The contaminants do not necessarily interact chemically ...

  • InfoWorks RS Problem Solver 4 – Sedimentation Movement

    Almost all watercourses are subject to the movement of sediment downstream over time. The underlying physical process is simple. Particles of material are picked up from the bed and banks of the watercourse at high rates of water flow and transported in suspension in the water. Larger and denser particles are picked up and suspended when the speed of flow is faster. When the rate of flow reduces ...


    By Innovyze

  • In situ treatment of canal sediments case study

    The Problem Rivers and waterways have traditionally been the focus of industrial construction and commerce. Throughout the world, cities have grown and flourished on the banks of major inland waterways. Additionally, major industrial development has focused on these same inland waterways. These waterways provided and continue to provide a cost effective transportation system for ...


    By Nordevco Associates Ltd.

  • Mining Related Sediment Impacts: Causes, Significance and Solutions1

    The ProblemAs with many production activities related to the use of natural resources, initial legacies in the form of negative impactsare often characterized by acute pollution of surface waters. In the case of the mining industry, long after the originalmining-related activity ceases, residues such as tailings, spoil piles, sediments in settling ponds or sediments reaching natural ...


  • Common Treatment Technologies for Fuels in Soil, Sediment, and Sludge

    Common treatment technologies for fuels in soil, sediment, and sludge include biodegradation, incineration, SVE, and low temperature thermal desorption. Incineration is typically used when chlorinated SVOCs are also present with fuel, and not specified for fuel-only contaminated soil, sediment, or sludge. All types of biodegradation, both in situ or ex situ, can be used to remediate soils: ...

  • Ex Situ Thermal Treatment for Soil, Sediment, and Sludge

    The main advantage of ex situ treatments is that they generally require shorter time periods, and there is more certainty about the uniformity of treatment because of the ability to screen, homogenize, and continuously mix the soils. Ex situ processes, however, require excavation of soils leading to increased costs and engineering for equipment, possible permitting, and materials handling worker ...

  • Enrichment of marine anammox bacteria in Hiroshima Bay sediments

    Anaerobic ammonium oxidation (anammox) involves the microbiological oxidation of ammonium with nitrite as the electron acceptor and dinitrogen gas as the main product. The Scalindua species, an anammox genus that dominates natural habitats, plays an important role in catalysing the loss of nitrogen from marine environments. Until now, a few Scalindua species have been reported to ...


    By IWA Publishing

  • Ex Situ Biological Treatment for Soil, Sediment, and Sludge

    The main advantage of ex situ treatment is that it generally requires shorter time periods than in situ treatment, and there is more certainty about the uniformity of treatment because of the ability to homogenize, screen, and continuously mix the soil. However, ex situ treatment requires excavation of soils, leading to increased costs and engineering for equipment, possible permitting, and ...

  • A study on the estimating of sediment concentration with turbidity and acoustic backscatter signal for different sediment sizes

    Turbidity and acoustic measurement are alternative indirect methods to determine sediment concentration. Acoustic Doppler velocimetry can be used to estimate suspended sediment concentration (SSC) with the signal-to-noise ratio (SNR) in the water. In this study, particles size affecting turbidity and SNR values was investigated using four different sediment size groups (0–50, 50–100, 100–200, ...


    By IWA Publishing

  • The interplay of environmental toxicology and chemistry in the development of sediment quality criteria

    The search for rational methods to develop criteria for various media—water, sediment, and tissue—and various receptors—aquatic, terrestrial, and human—has been a consistent and continuous enterprise from the beginning of environmental toxicology. Many of the 100 most frequently cited papers in Environmental Toxicology and Chemistry directly or indirectly address topics relevant to criteria. ...


    By John Wiley & Sons, Ltd.

  • Common Treatment Technologies for Halogenated SVOCs in Soil, Sediment, and Sludge

    Common treatment technologies for halogenated SVOCs in soil, sediment, and sludge include biodegradation, dehalogenation, incineration, and excavation with off-site disposal. All types of biodegradation, both in situ or ex situ, can be considered to remediate soils: in situ bioremediation, bioventing, composting, controlled solid phase, or landfarming. Slurry phase biological treatment is also ...

  • Characterizing long-term Hydrologic-response and sediment-transport for the R-5 catchment

    Recently there have been several calls to establish long-term data collection networks to monitor near-surface hydrologic response and landscape evolution. The focus of this paper is a long-term dataset from the International Hydrologic Decade (1965–1974). The small upland catchment, known as R-5, located near Chickasha, Olahoma, has been the subject of considerable attention within the ...

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