environmental dredging Articles
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Using a modified dredging elutriate testing approach to evaluate potential aquatic impacts associated with dredging a large freshwater industrial Harbour
Potential adverse impacts to the aquatic environment should be minimized whenever possible during an environmental dredging project by selecting realistic and technically feasible environmental targets. These targets need to balance short term impacts with the longer term benefit of removing contaminated sediments from the environment. Environmental dredging is part of the planned remediation ...
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Environmental Impacts of Dredging on Coral Reefs
Coral reefs are known to be the “rainforests of the ocean“. They are among the most diverse and productive ecosystems found on the planet. Coral reefs are a vital part of the marine ecosystem that provides habitat for approximately 25% of all marine life and over 4,000 species of fish, despite only covering 1% of the ocean floor. Approximately half a billion people depend on the coral ...
By WKC Group
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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 has been around for nearly 50 years, but remains the unknown stepchild of the dredging world. That may be changing as environmental ...
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Environmental Impacts of Dredging on Seagrass Habitats – Part 2
A worldwide study showed in 45 cases, a total loss of 21,023 hectare (or general surface area) of seagrass due to dredging. Seagrass serves as an ecosystem, a food, and a home to many high risk marine species. Dredging, maritime activities, and various enterprises of man contribute to the death of aquatic ecosystems every day. The interesting thing about dredging is that it’s actually ...
By WKC Group
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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 ...
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Dredging the Hudson River
Dredging the Hudson River SRS Crisafulli follows the activities of our larger corporate cousins tackling tough environmental remediation dredging projects. One of the toughest is the Hudson River EPA PCB GE cleanup. Watch Hudson Dredging Video. Dredging has resumed in the Upper Hudson River for the 2012 season - Phase II Year 2. Massachusetts based Cashman Dredging & Marine Contracting ...
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Using geotextile tubes for dewatering and beneficial use of high water content solid wastes: design charts and verifications
The interest to push the beneficial use of high water content solid waste materials to a greater extent has increased tremendously. Using woven geotextile tubes as confinement and dewatering facilities for industrial, municipal sludges, and dredged materials offers various advantages to expand and enhance existing beneficial use strategies. To be successful, proper design of geotextile tubes is ...
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Hydroman™ Submersible Agitator Sand Pump
Hydroman™ Submersible Agitator Sand Pump is the ideal pumping equipment to handle sand, sludge, slurry and other high density water mixed solids. TSQ Submersible Agitator Sand Pump is mainly composed of three parts which are pump body, motor and seal arrangement. Submersible slurry pump is widely used in metallurgy, chemical industry, mining, coal, electric power, building materials, municipal ...
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Bound for Venezuela
SRS Crisafulli, Inc., Founded in 1966, is one of a few select manufacturers of specialized, engineered dredging systems in the United States. The company is now, and has been since its inception, located in Glendive, MT. Fron its beginning, SRS Crisafulli has served agriculture with pumping equipment for irrigation, flood control and dewatering. The past decade had been a period of carefully ...
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DEC offer Advanced In-situ Immobilisation and Capping Technique for Polluted Sediments
In the July 2002 issue dedicated to environmental dredging of World Dredging Mining & Construction, DEC present its newly developed in-situ immobilisation and capping technique for polluted sediments, the 3SI-technique. DEME Environmental Contractors N.V. (DEC), a Belgium-based company specialising in remediation and recycling or disposal of water bottom sediments, is offering a vast ...
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Hydroman™ Submersible Agitator Sand Pump
Hydroman™ Submersible Agitator Sand Pump is the ideal pumping equipment to handle sand, sludge, slurry and other high density water mixed solids. TSQ Submersible Agitator Sand Pump is mainly composed of three parts which are pump body, motor and seal arrangement. Submersible slurry pump is widely used in metallurgy, chemical industry, mining, coal, electric power, building materials, ...
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Bound for Venezuela-case study
SRS Crisafulli, Inc., founded in 1966, is one of a select few manufacturers of specialized, engineered dredging systems in the United States. The company is now, and has been since its inception, located in Glendive, MT. From its beginning, SRS Crisafulli has served agriculture with pumping equipment for irrigation, flood control and dewatering. The past decade has been a period of carefully ...
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Hydroman™ Submersible Mud Sucking Pump for Mining
Hydroman™ Submersible Mud Sucking Pump for Mining, also named Submersible Slurry Pump,is designed and engineered for complex heavy-duty pumping applications to handle high mixture densities such as sand, slurry, sludge, wastewater and gravels, etc. The difference between submersible mud pump and ordinary mud pump is that submerged mud pump work underwater, while most slurry mud pumps work ...
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Rotomite-6000 contract dredging of various materials
Customer: Georgia Dredging And Dewatering/Eco-Vac Type of Facility: Environmental Services & turnkey Dredging & Dewatering services Georgia Dredging and Dewatering developed out of the need to contact services other than those previously provided by vacuuming and jetting alone. David Grapengeter, President of ECO-VAC, Inc., and Jay Matthews teamed up to build a strong full-service ...
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Dredging Contractor Using Rotomite 6000-case study
Customer: Georgia Dredging And Dewatering/Eco-Vac Contacts: Jay Matthews and David Grapengeter Type of Facility: Environmental services & turnkey dredging & dewatering services Georgia Dredging and Dewatering developed out of the need to provide contract services other than those previously provided by vacuuming and jetting alone. David Grapengeter, President of ECO-VAC, Inc., and Jay ...
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Remediation of the mercury-contaminated sediments in Svartsjoarna with Geotube - Case Study
The Challenge Svartsjoarna in Sweden are located near Paulistrom. Through the lake, a small river runs into the river Eman. This Eman river is considered to be one of the most valuable water courses in Sweden. The river has a very high diversity of fish species and animal like otter. Some parts of the river have very well developed meander systems. For these reasons, a remediation had to be ...
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Dewatering project in Almeirim (Portugal) - case study
TenCate Geosynthetics has supplied TenCate Geotube® containers for a dewatering project in Almeirim (Portugal), which involves the removal and dewatering of organic sludge. This first project in Portugal is the result of cooperation between TenCate Geosynthetics, Ashland Hercules Water Technologies and Geosin, the local partner. TenCate Geosynthetics and Ashland Hercules Water Technologies ...
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Environmental related decision making using the Interlink Decision Making Index (IDMI)
In the traditional decision making process, at post assessment stage, 'weighting' each criterion is a very difficult process and depends heavily on the personal preference of the decision maker. There is a need to provide decision makers with a simple, less human interfered (yet still transparent) mechanism that integrates all the key criteria, while allowing a couple of them to be chosen as ...
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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 ...
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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 ...
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