Dewatering Technology

The Rapid Dewatering System has the following advantages:

  • Each unit continually processes the flow from a hydraulic dredge at rates of 2000-5000+ gallons per minute or 100-300+ cubic yards/hour of in-situ (in place) solids.
  • The RDS instantly separates and classifies solids into recoverable piles of debris, shells, and gravel; sand; and fines which include clays, silts, and organics for easy reuse or disposal. In addition, it simultaneously returns clear water (from 30 to less than 5 p.p.m. total suspended solids) to the waterway.
Genesis Rapid Dewatering System
Genesis Coarse Debris Screen

Captured Debris
Captured Debris

Hydro Cyclone
Genesis Hydro Cyclone

Captured Sand
Captured Sand

Polymer System
Polymer System

Flocculated Sediment
Flocculated Sediment from a Lab Test

Clear Water Lab Results
Clear Water Lab Results

Recovered Fine Grained Sediments
Recovered Fine Grained Sediments

RDS Returned Clear Water
Cleaned Water Returned to the Waterway

Rapid Dewatering System’s Four Dewatering Stages:

  1. Coarse Debris Screen acts as a breathing screen which eliminates and removes a variety of large objects such as aluminum cans, carpet, lumber, fiberglass, kelp, and other vegetation.

  2. The Hydro Cyclone uses centrifugal force to spin the sand away as the water drains down

  3. The unique polymer system monitors changes in density and flow to precisely inject polymer to create flash flocculation of the fine grain sediments. Not only does this flocculation allow for capture of the microscopic particles, but the precise dosage of polymer reduces and controls any residual polymer in the effluent. Genesis developed Logic Systems, a unique set of complementary protocols to assist in the lab modeling effort prior to project start-up.

  4. The Rapid Dewatering System captures the flocculated fine grain sediments and recovers water in a unique approach. While competitors wait for the flocculated solids to slowly fall through a water column in a thickener or clarifier, the RDS instantly drains water away from solids. This immediate separation of solids and water is a superior advantage in costs, space, and time on location.

Download our Rapid Dewatering System PowerPoint Presentation (23 mb)


Genesis Fluid Solutions, a technology company, is introducing a disruptive technology to the water industry.

The Joshua Technology instantly separates sediments and contaminants from the dredge flow in the remediation of harbors, waterways, mining operations, and reservoirs. The technology performs at flow rates many times faster than typical "dewatering" operations. The resulting cost savings to the client are significant, and multiply as the Joshua Technology removes contaminants from polluted lakes, rivers, and large mine tailings. The return water is clear (less than 1ppm), far superior to the standards for discharge demanded by U.S.E.P.A. and the Corps of Engineers.

This technology is a unique micropore filtration technology which is patented in many countries around the world. Companies that have stepped forward to partner with Genesis include the most prestigious of Engineering groups (Black and Veatch, Halcrow, and Post Buckley), and the most powerful water companies (Violia, SNF Floerger, and General Electric).

Genesis achieved proof of concept on a harbor project last year in Los Angeles, and was immediately awarded the contract on the hotly contested Sawgrass project in Florida. Violia and Genesis have agreed to working together on mining projects in the U.S. and South Africa. Exploratory discussions have now begun with Boskalis, the Dutch Dredging company, on waterway projects in the E.U. and the U.S.