Polymers for Dredging
At Aspen Polymers, we know that polymer treatment is not for all dredging applications. Since polymers mainly react with dredge slurry particles below No. 200 mesh (<70 microns), which are typically referred to as "fines," only those sediments or soils at or below the particle size of very fine sands, silts, clays and organic materials are likely to be influenced by their coagulation and/or flocculation properties.
Some of the benefits realized, which result in improved process efficiencies, when using polymer treatment are:
more rapid solids settling rates and resistance to re-suspension
cleaner supernatant or effluent discharge water due to TSS (Total Suspended Solids) removal
improved cake solids generation (i.e. volume reductionn) and solids throughput for dewatering.