Geotubes for Erosion Control
Geotextile Dewatering Tubes (also known as sludge tubes, geotubes, or dewatering tubes) are ideal for large dewatering or sludge removal projects. Geotextile tubes' designs 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.
Sludge Tubes Technical Specifications
|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|
Size and Estimated Capacity per Tube
|Fabric||Material||UV Stable||Weight/Unit Area
|Polypropylene||Woven Geotextile||Yes||16.6 (560)||Black/Tan|
Geotextile Tube Benefits
- Requires Minimal Equipment
- Cost Effective
- Simple Design & Operation
- Can Run 24/7 with Minimal Labor
What are Geotubes Used For?
- Coastal Protection
- Dewatering Projects at Power Plants
- Paper Mill Sludge Dewatering
- Mining Solutions
- Sediment Dewatering
- Large Pond Dredging
- Slurry Dredging
- Breakwaters and Jetties
High Efficiency Dewatering and Sludge Tubes
Sludge / sediment geotextile 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 Tubes
- Slurry / 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 & Filtering Geotextile Options
Other Geotextile Dewatering Products
Other Filtering Devices
- Type 1 Turbidity Curtain
- Type 2 Turbidity Curtain
- Type 3 Turbidity Curtain
- Silt Fence (Standard & DOT)
- Best Management Practices
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.