GEI Works Erosion Pollution

Erosion Pollution

Geotextile Dewatering Tubes

Geotubes for Erosion Control

geotextile dewatering tubeGeotextile Dewatering Tubes (also known as sludge tubes, geotubes, or dewatering tubes) are ideal for large dewatering or sludge removal projects. Geotextile tubes feature significantly larger dimensions and use higher strength woven geotextile fabric rather than the standard nonwoven fabric of Dewatering Bags. The construction allows large amounts of sludge and silt to be easily removed without having to constantly change or replace bags.

Due to their high strength and large capacity, dewatering tubes are used extensively in Wastewater Treatment Projects (WWTPs), agricultural ponds, aquaculture facilities, pulp and paper mills, and industrial lagoons. Geotube sizes can be custom made to your required location and surface area.

Asking what are geotubes used for? We can help! Call the GEI Works team at 1-772-646-0597 or fill out our quote request form to discuss geotextile tubes.

Geotextile Dewatering Tubes Technical Specifications

Property Value Extra Notes
Length 50'
Other Lengths by Special Order
Circumference 15', 22.5', 30', 45'
60', 75', 90'
Filling Port Spacing 1 - 5 ports One Port for Every 50' of Length
Informational PDF Flyer Installation Instructions

Geotextile Dewatering Tube Size and Estimated Capacity

Circumference Tube Volume
15' 0.6 y³/LF
22.5' 1.3 y³/LF
30' 2.3 y³/LF
45' 4.1 y³/LF
60' 6.2 y³/LF
75' 8.3 y³/LF
90' 10.1 y³/LF

Geotube Material Specification

Fabric Material UV Stable Weight/Unit Area
oz/yd² (g/m²)
Polypropylene Woven Geotextile Yes 16.6 (560) Black/Tan

Questions about geotube sizes? We can help! Call the GEI Works team at 1-772-646-0597 or fill out our quote request form to discuss your requirements.

Geotextile Dewatering Tube Benefits

  • Requires Minimal Equipment
  • Cost Effective
  • Simple Design & Operation
  • Can Run 24/7 with Minimal Labor

Geotube Applications

Geotubes and High Efficiency Dewatering

geotextile dewatering tubeGeotextile dewatering tubes are filled to 85% capacity with slurry mix and then allowed to consolidate. Once consolidation has taken place, the geotextile tubes are refilled, and the cycle continues until consolidated solids reach 85% of the total capacity.

In order to achieve the best volume reduction, geotextile tubes should be left in place to dewater over extended periods of the time. Reduction rates often vary from site to site and depend on the slurry, organics, and conditions of a location. After the sludge or sediment removal process is done, consolidated materials can be transported to an off-site location for disposal or used as fill or compost.

Things To Consider When Using Geotextile Dewatering Tubes

  • Slurry and Sludge solids content
  • Placement of inlets for distribution of sludge / solids in each tube
  • Drainage of clear, free-flowing filtrate from each tube to retention area or reservoir
  • Tube height should not exceed 5' and inflation rates of multiple tubes applications
  • Stability of additional layers of geotextile tubes (if filling a second layer tube)
  • Safe location with respect to potential hazards and area

This technology is often the most cost effective option for treating a specific sludge / slurry stream. Simple soil analysis in conjunction with hanging bag tests can determine the correct fabric and pore size to safely deploy sludge tubes in an environmentally responsible manner. Overall geotextile tube performance will also be influenced by factors such as the percent of water content in the media, the size of the particles, the shrinkage when dry, and soil composition.

*** Disclaimer ***

Polymers: Depending on the media, pump rates, and site limitations, polymers may improve flocculation and dewatering times. Polymers can help achieve the highest level of efficiency with sludge geotubes and dewatering bags. Talk to our project specialists about polymers to help make the most of your dewatering tubes.

  • All necessary dredging, pumping, and piping systems must be evaluated. The sludge / slurry flow to the geotextile tubes must be controlled through a series of manifolds and valves.
  • Consider contacting a polymer specialist to treat the sludge and also the necessary management and labor to establish/maintain a sludge tube dewatering process.

The correct use of polymer can reduce total time and provide huge savings on a geotextile dewatering tube system, but it must be carefully monitored during the tube filling operation. Periodic beaker tests ensure peak performance and TSS thresholds are achieved.

Other Dewatering and Filtering Geotextile Options

geotextile dewatering bagOther Geotextile Dewatering Products

turbidity curtainOther Filtering Devices

Read our blog post: Dewatering Products Can Keep Your Project Free of Costly Fines.

View a customer question about using Dewatering Bags to Remove 1,000 Cubic Yards of Sediment from their site, or this customer who needed Dewatering Tubes to Dredge Aluminum Sludge.

Questions about geotubes for erosion control? We can help! Call the GEI Works team at 1-772-646-0597 or fill out our quote request form to discuss your requirements.