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Dewatering Bags

What is a Dewatering Bag?

Dewatering Bags are constructed of high strength woven geotextile and are custom fabricated with double stitching that resist pressures during pumping operations.

High flow rate allows liquid to dewater, while containing solids.

  • Average Sizing - Length: 100ft or 200ft; Circumference: 45ft or 60ft

Overview

Dewatering bags Figure 1
The Dewatering Bag is pumped with sludge material.
Dewatering bags Figure 2
As the liquid escapes from the tube, solid particles are trapped inside. The process is repeated until the tube is full.
Dewatering bags Figure 3
The dried solids will increase the options for transportation and disposal.

Potential Dewatering Applications

  • Municipal Sewage Sludge
  • Pulp and Paper Mill Sludge
  • Fly Ash
  • Fine Grained Dredged Material 
  • Coal Tailings
  • Mining and Drilling Waste
  • Industrial By-Product Waste
  • Agricultural Waste

Placement of the Dewatering Bags

Dewatering bag being placed on berms

Dewater bag is laid across the berms after the surface has been prepared. After the ditch is constructed, a fiber mat is placed prior to laying the bag out.

Disposal of Solids

Dewatering bags solids disposal
  1. Sanitary Landfill
  2. Land Application

Bag and fiber mat is disposed at sanitary landfill after solids have been removed and the distributed area is resloped and seeded.