How to get GEOTUBE dewatering right
GEOTUBE dewatering effectiveness hinges on proper design and application, including choosing the correct tube size and polymer dosing tailored to the slurry type, ensuring efficient, large-scale waste management in various industries.

By Norhisam Omar

6 February 2022

2 Min read


How to get GEOTUBE dewatering right

Achieving effective solutions in engineering relies on mastering the basics. With GEOTUBE® dewatering systems, proper foundational design and application lead to straightforward dewatering processes. When designed and applied correctly, GEOTUBE excels in diverse applications, from industrial wastewater to agriculture and municipal projects. 

We’ll delve into 6 fundamental factors for optimal dewatering. 

#1. Effective design 

Successful GEOTUBE design begins with an accurate assessment of the slurry to be dewatered. This leads to determining the right type and size of GEOTUBE for the expected volume of dewatered solids. It's important to note different industries have distinct ways of measuring; while most refer to volume and parts per million, the mining sector uses tons. 

#2. Tube design and selection 

GEOTUBE units should be sized to accommodate the full slurry volume. Using fewer large tubes is often more efficient and economical than using many small ones unless space constraints dictate otherwise. When selecting, consider: 

  • Fabric type 

  • Circumference and length 

  • Number of fill ports 

Factors determining maximum fill heights include slurry composition, pump delivery rates, and configuration within the dewatering pad. Always request supporting calculations from suppliers.  

#3. Polymer dosing 

Polymers help consolidate fine particles within the tubes and produce clearer effluent. While commonly used, not all slurries need polymers; consider the cost-benefit. GEOTUBE systems require less polymer compared to mechanical plants, and the dosage can be adjusted by sampling before entering the tubes.  

#4. Pad design 

Ensure the dewatering platform has a slope of less than 5% (5 in/100 in) to prevent uneven tube distortion, which can lead to failures. Proper drainage channels are vital for efficient operation, capturing and discharging liquid outputs. 

#5. GEOTUBE® deployment 

Effective handling and sequencing boost the dewatering process's efficiency. All GEOTUBE units come on steel cores for easy handling. They can be unrolled manually or with equipment, positioned precisely, and filled through easily accessible ports. For projects with tight spacing or layered tubes, Solmax provides detailed guidelines. 

#6. Pumping and filling 

Always adhere to the specified fill limits for each GEOTUBE. The maximum fill height, determined by fabric type and slurry, is printed on the tube and should never be exceeded. 

Best practice 

While some clients opt to manage deployment and operation themselves, it's often beneficial to employ specialist applicators, especially for large-scale projects. Experienced professionals ensure a smooth process from deployment to the end, often maximizing economic returns and ensuring efficiency.