Passive Sludge Dewatering
We use geotextile bags (filter bags) for passive sludge dewatering interventions. This option creates a low maintenance and
cost effective solution that can remove more water from contaminated material and sediment that already exists in treatment
ponds, tailings ponds, stormwater management ponds (SWMPs), and industrial lagoons – allowing you recoup valuable
materials that may have been missed in previous operations.
HOW IT WORKS
Filter bags are made from a specially engineered textile made from high tenacity polypropylene or polyester yarns, which are woven into a stable network that retains their relative position. This material is inert to biological degradation and resistant to naturally found chemicals, alkalis, and acids.
To ensure optimal dewatering, a polymer solution is injected into the sludge being pumped into the bags. The polymers connect with solid particles and draw them away from the water molecules. As the sludge pushes into the bags, the water escapes through the bag’s exterior filter, while the sediment is contained. The bags decant for several weeks to ensure maximum dewatering.
WE’LL PROVE IT
We’ve built an international reputation for providing dependable, versatile solutions that
protect aquatic ecosystems, while keeping projects on time and on budget.