dredging turbidity Articles

  • Mechanical Dredging Vs. Biological Dredging

    For many years, mechanical dredging has been the solution for dying ponds, lakes, retention basins, and rivers. Dredging removes sediment, some excess nutrients, pollutants and organic matter. By increasing the depth in this way, weed growth is discouraged, water temperature lowered and oxygen levels may be increased. Although mechanical dredging can help in these ways, it only solves part of the ...

  • Case Study - Harbors Dredging

    Location : Jordan and Italy Year : 2009 Full Optional Dredgers with HY85/160 Jordan: Dredge with steel cable full optional with hydraulic pump HY85/160 and excavators EXHY20 Italy: Dredge with telescopic boom full optiona with hydraulic pump HY85/160, high pressure water Jet Ring and Anti-Turbidity bell. Dredge is also ...


    By Dragflow S.r.l.

  • Case study - harbors dredging

    Location: Jordan and Italy Year: 2009 Full Optional Dredgers with HY85/160 Jordan: Dredge with steel cable full optional with hydraulic pump HY85/160 and excavators EXHY20 Italy: Dredge with telescopic boom, full optional, with hydraulic pump HY85/160, high pressure water Jet Ring and Anti-Turbidity bell to protect the ...


    By Dragflow North America

  • Sediment Spill Monitoring from Dredging, using the SediMeter

    Strategies for sediment spill monitoring and siltation measurements. The SediMeter allows a gradual increase in the equipment investment as conditions merit, from a single stand-alone logger, to a real-time monitoring network in which all previously purchased equipment can be included. Sediment spill causing siltation gives rise to two separate environmental problems: A suspended sediment plume ...


    By Lindorm, Inc.

  • Four Major Benefits of Horizontal Hydraulic Auger Dredges

    Horizontal hydraulic auger dredging has been around for nearly 50 years, but remains the unknown stepchild of the dredging world. That may be changing as environmental dredging becomes more prominent. Horizontal hydraulic auger dredges are ideal for environmental projects for several reasons. First, horizontal hydraulic auger dredges are small. I know everybody wants bigger, but small has ...


    By SRS Crisafulli, Inc.

  • The Experts’ Views of Horizontal Hydraulic Auger Dredging

    I attended the 42nd Texas A & M University dredging short course in January 2013. Despite the mountain of excellent information I gleaned from the course, I was disappointed that my dredging field wasn’t featured. Horizontal hydraulic auger dredging ...


    By SRS Crisafulli, Inc.

  • Dragflow, environmental-proof technologies. Beyond business for love of the Earth.

    Dragflow chooses to soften the environmental impact with advanced technologies for dredging optimization and naturalistic protection. High performances imply  a specific attention towards ecosystems where the operations are carried, since they often are fragile and easy to jeopardize. That’s why Dragflow conceived technical solutions like the anti-turbidity bell: designed to preserve ...


    By Dragflow S.r.l.

  • Geotube Dewatering Technology A Key Component In Hylebos Waterway Cleanup - Case Study

    The Hylebos Waterway was named after a 19th century priest who served parishes in Tacoma and Steliacoom, WA. For years, however, the name was associated with one of the largest Superfund sites in the nation. The Hylebos Waterway contains a toxic layer of sediment contaminated with PCBs, PAHs, arsenic, hexachlorobenzene, hexachloro-butadiene, and other organics and metals. The contamination comes ...

  • Lakefront Property

    With 75 percent of the $45-million, three-story Pier Wisconsin project in Milwaukee being constructed over Lake Michigan, much of the project will be built on piles embedded in the lake bottom.The team from Griffin Dewatering Corporation used a newly developed system designed to screen out silt and reduce turbidity of discharge water. “This is a highly unusual project because it is all ...


    By Griffin Dewatering

  • Qatar-Bahrain Causeway

    Huckbody Environmental was commissioned by the Qatar-Bahrain Causeway Consortium (QBCC) and COWI to provide expert input to the EIAs and Environmental Management Plans (EMPs) for the 40km embankment and bridge crossing between Qatar and Bahrain; the longest causeway in the world. The Government of the State of Qatar and the Government of the Kingdom of Bahrain intend to build a fixed road and ...


    By Huckbody Environmental

  • Excavation, Retrieval, and Off-Site Disposal

    Introduction: Contaminated material is removed and transported to permitted off-site treatment and/or disposal facilities. Some pretreatment of the contaminated media usually is required in order to meet land disposal restrictions. Confined disposal facilities (CDFs) are engineered structure enclosed by dikes and designed to retain dredged materials. A CDF may have a large cell for ...

  • Geotube Dewatering Technology Provides An Effective Dewatering Technology Solution For Dewatering Aggregate Tailings - Case Study

    Simple and inexpensive, Geotube dewatering technology can make management of tailings and fines much easier. Many aggregate plants experience high equipment and manpower costs associated with the handling and removing o( tailings and fines from settling ponds. The costs of maintaining pond operations can vary significantly from plant to plant. Not only is valuable space tied up ...

  • Remote monitors track river restoration success

    The Norfolk Rivers Trust has installed a remote river monitoring station that has been tracking water quality and flow before and after river restoration work at an area of ecological importance on the River Nar. Rising in chalk hills to the east of the village of Tittleshall, the river flows south for 2.5 km until it reaches Mileham, then predominately west for 39.5 km through the villages of ...


  • Erosion and Sediment Control: Navigating NPDES Regulations, the SWPPP, and Techniques for Compliance

    Erosion and Sedimentation: Why Are They a Problem? The US Environmental Protection Agency lists sediment as the single most common pollutant in rivers, streams, lakes, and reservoirs. With all the potentially harmful chemicals and substances in the world, it seems odd to many people that sediment—dirt, essentially—is singled out as the major culprit. Yet these particles of ...


    By FINN Corporation

  • Solar-Powered Circulation Technology Clears Out Blue-Green Algae without the Costs and Hazards of Copper Sulfate

    Untitled Document As the annual onslaught of blue-green algae (cyanobacteria) blooms continues to plague fresh water lakes and reservoirs, the use of copper sulfate to control the problem has ...


    By Medora Corporation

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