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Dewatering Bags
Staged Dewatering Bags for Small dredge Project Dewatering Bag Product Description:Our filter bags are made from durable geotextile filtration fabric suitable for removal of sediment and oily waste water sheen. Each bag is sewn with multiple seams and can accomodate up to a 4" pipe in the hose sock making this the perfect filter bag whether you are pumping into a dumpster or on the ground!
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Do you need specifications for our dewatering filter tubes and bags? CLICK here to download.
Typical Sediment Filter Bag Installation and Use• Sediment bags should be sized based on the volume of water being pumped (pump flow rate), quantity and type of sediment and the permittivity of the given bag size.• Consideration should also be given to location. (Steep sloped surfaces are typically not recommended as the bag may roll). Placement may be in a 20’ drop box, dump truck or similar for containment to facilitate transportation. • Each sediment bag can handle a 2”, 3” or 4” discharge hose. (The hose can be placed along any edge by making a small incision into the fabric, inserting the hose and then clamping the fabric to the hose via wire, ties, clamp, rope or similar to create a good seal.) • To improve surface area and performance of the bag, place it on a permeable/porous surface such as hay bales, aggregate or similar. (take care to select a media that will not damage the bag – use of a ground cloth can alleviate damage from occurring) • These sediment bags are rugged, but not indestructible. Care should always be taken to properly monitor performance to ensure that pump rates or concentrations of sediment are not excessive. Failure to do so may cause bag to fail. • Avoid multiple pipe discharges into 1 bag. One bag per discharge is recommended unless specifically designed. • Filtered Water Runoff from the bag should be guided to the nearest inlet and take care to avoid causing any erosion.
Using our dewatering bags in conjunction with a flocculant or polymer for finer clay and organic media will definitely improve flow rates, discharge clarity and % of solids retained. Ask one of our technical staff members to discuss options for soil media testing and recommending polymers that are site specific.
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