water dredging 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 ...

  • Overview of dredging concept, including automated dredging, with liquid waste technology dredges

    The RUNT Model RCLPEF, an electrically powered remote controlled dredge, is designed to remove sediments from the bottom of waterways, ponds, and settling lagoons. In situ solids are excavated and transported as a slurry through a piping system to a remote location. Foam filled, steel pontoons provide the necessary flotation to support the machinery and equipment in the waterway. Principal ...

  • Lake dredge - Case Study

    Final Dredge Effluent Polishing with CESF Treatment using ChitoVan Chitosan Lactate Hosting over 400 different species of plant, bird, fish, reptiles and amphibians, Burnaby Lake is the most ecologically valuable resources in the Vancouver, BC area. Over the course of many years of nearby development the lake had become filled with a substantial amount of sediment. To protect and enhance the ...

  • Case study - dredge with ladder

    Location: Ukraina Year: 2010 Dredge with ladder DRS085/160E22EF Dragflow pump HY85/160B with cutters EXHY20 and High Pressure Water Jet-Ring Hydraulic power pack electric driven with complete control board in the operator cabin Dredging depth about 10m Discharge distance up to 700m ...


    By Dragflow North America

  • 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

  • Dredging and Shoreline Remediation

    Many situations can complicate a shoreline’s integrity.  These can range from flooding, hurricanes and man-made disasters and can even include aquatic harvesting and human recreation.  Making efforts to protect a shoreline from these intrusions helps protect economic and recreational interests.  Shoreline remediation is an investment in the overall economic and natural ...


    By SRS Crisafulli, Inc.

  • Dredging Short Courses

    By Eric Lillberg, SRS Crisafulli Senior Applications Engineer When I first started as an applications engineer for SRS Crisafulli, I searched for information on the subject of dredging. I was surprised to find there was very little non-commercial content available. I have since found a pair of short courses, offered annually by Texas ...


    By SRS Crisafulli, Inc.

  • Case study - dredge with ladder

    Location: Ukraina Year: 2010 Dredge with ladder DRS085/160E22EF Dragflow pump HY85/160B with cutters EXHY20 and High Pressure Water Jet-Ring Hydraulic power pack electric driven with complete control board in the operator cabin Dredging depth about 10m Discharge distance up to 700m ...


    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 optiona with hydraulic pump HY85/160, high pressure water Jet Ring and Anti-Turbidity bell. Dredge is also ...


    By Dragflow S.r.l.

  • Dredging for Gold in Remote Places

    By Dave Stoltenberg, Dredge Rental Specialist with SRS Crisafulli From Alaska to West Africa, SRS Crisafulli dredging experts are busy installing dredges and training operations personnel at producing gold mines.  Nearly all operating mines have overflow lagoons and impoundments for the collection of particulates, overflow mud, and tailings.  Typically ...


    By SRS Crisafulli, Inc.

  • Dredging Up Power

    Caterpillar Marine was selected to power three 3500 m³ trailing suction hopper dredgers for the Jan De Nul Group with Cat 3500E IMO III and EPA Tier 4 certified engines. Cat said the 3500E incorporates selective catalyst reduction (SCR) after-treatment technology with closed-loop NOx sensing and application optimized performance for minimized owning and operating costs. “Embedded ...

  • Case study - channel dredging

    Location: Germany Year: 2010 Working Context description The working site is a channel situated in eastern Germany. Deposits of sand, lime and gravel has considerably lowered the water depth of the channel. The problem Fast dredging was required in order to re-open the channel to navigation. The ...


    By Dragflow North America

  • Case study - channel dredging

    Location: Germany Year: 2010 Working Context description The working site is a channel situated in eastern Germany. Deposits of sand, lime and gravel has considerably lowered the water depth of the channel. The problem Fast dredging was required in order to re-open the channel to navigation. The customer already ...


    By Dragflow S.r.l.

  • Dredging the Back Nine: Stormwater and Water Treatment Ponds

    SRS Crisafulli's FLUMP Dredge was in the news this spring for its role in meeting the opening day schedule at a unique Wyoming golf course. The Casper Star-Tribune ‌reported on the FLUMP's contribution to a remediation effort at the ...


    By SRS Crisafulli, Inc.

  • Dredging Abrasive Materials? Learn about SRS Crisafulli’s New Dredge

    The Rotomite-6000-C, SRS Crisafulli’s newest self-propelled dredge, broadens the Rotomite-6000’s capabilities to include removal of highly abrasive materials. The Rotomite-6000-C also increases the customer’s return on investment (ROI) by cutting sludge ...


    By SRS Crisafulli, Inc.

  • Hydraulic Dredging: A cost effective solution for most dredging tasks

    The vast majority of dredging jobs require removal of solids to depths of 30 feet or less. Several features enable hydraulic dredges to be the solution of choice for these applications. First, what are hydraulic dredges and how do they compare with alternative mechanical dredge types? Hydraulic dredges create slurries, combinations of solids and water, pump the slurries to the ...


    By SRS Crisafulli, Inc.

  • Lagoon Maintenance Dredging every Decade

    SRS Crisafulli has discovered the Rural Water Association.  This winter, Troy Fercho, Frank Robinson, Tristan Hoff and I attended shows in North Dakota, Montana, Minnesota, and Idaho.   At these Rural Water Association Trade Shows, we promoted SRS Crisafulli's dredge equipment and rental services to assist communities in managing the long term, low cost ...


    By SRS Crisafulli, Inc.

  • Need A Dredge For A Small, Difficult Application?

    SRS Crisafulli’s new shallow draft dredge, the Rotomite SD110, enables operators to dredge in small, shallow, confined areas in a minimum of 17 inches of water. This compact, self-propelled, steerable  machine can dredge just about anywhere without the use of cumbersome cabling. The SD110 is made entirely of aluminum, and is equipped with a hydraulic ram that puts a great amount ...


    By SRS Crisafulli, Inc.

  • Dredging Technology – Underwater Excavation and Construction

    The presence of water is ussualy considered a nuisance in construction, particularly when excavating removing water is common practice. In some cases however, water can be a very useful tool that may simplify things greatly. With the “flooded excavation principle”, the construction site is flooded after the retaining walls have been installed (e.g. sheet pile). When the ...


    By BBA Pumps

  • Recycling municipal sludge with portable dredges

    Policing the pit. With today's emphasis on resource recovery, even burdensome and seemingly worthless materials are becoming increasingly valuable. Take municipal sludge, for example. For sewage treatment facilities wrestling with the problem of sludge disposal, Liquid Waste Technology may have the answer. The New Richmond, Wisconsin, USA company manufactures dredges and lagoon pumping equipment ...

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