Dewatering filter tubes separate water from sludge and sediment. Contaminated effluent is pumped into the tube, the large silt and dirt particles remain, while cleaner water flows through the side of the tube. Keeping these contaminants out of city waterways keeps remediation and regulatory fines to a minimum.
There are two main differences between dewatering tubes and dewatering bags. The first difference is size; dewatering filter tubes are much larger and can handle greater amounts of liquid. The second difference is material. Bags use a nonwoven geotextile, while dewatering sludge tubes are constructed of stronger woven geotextile fabrics.