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FORAGER® Sponge is highly effective for treatment of solids, sludge and slurries derived from: |
- Municipal Sewage
- Harbor Sediment and Dredging
- Mine Tailings
- Lime-Generated Precipitates
- Bioreactor Sediments
- Filter Cakes
- Incinerator Ash
- Soil
- Drilling Muds
FORAGER® Sponge pores are self-filtering which prevents total occlusion of the cube’s active polymer component. In a typical application, the substrate to be remediated is adequately diluted with water to produce pourable, thin slurry. Sponge cubes are added in the proportion of 1 to 10 cubic feet of cubes to 200 cubic feet of slurry. The mixture is agitated gently for 2 to 24 hours preferably using a rotary or tumbling mode. This method of agitation can be achieved in drums, tanks, tunnels and concrete delivery trucks - preferably rotating in the range of 0.5 to 2 rpm. Once treated, the mixture is poured through a .25 to .40 inch mesh screen, which retains the cubes while allowing passage of the dispersion.
In some applications, elevated temperatures shorten the treatment time. Solvating agents may be added to the slurry to expedite transfer of the metal from the suspended particles to the Sponge. For example, citric or acetic acids might be employed in certain metal-removing applications.
How long does it last?
The duration of treatment depends upon several factors:
- Amount of pollutant to be removed
- Desired removal efficiency
- Nature of bonding forces which cause the pollutant to be attached to the suspended particles
- Consistency of the slurry
- Average size of suspended particles
- Affinity of the Sponge for the targeted pollutant
Maintenance & Disposal Options
FORAGER® Sponge is a non-toxic, bio-degradable, non-hazardous product prior to being used. This product does not contain materials that require special handling or pose any threat to human health or the environment. After the sponge has adsorbed metal ions, the metal is bound to the sponge and will not be released without special chemical treatment. The metals are now in a solid waste form.
CleanWay Environmental Partners recommends that used sponge products be disposed of at an approved solid waste disposal facility. Disposal regulations vary greatly from state to state and even from one disposal facility to another.
- Saturated sponge may be disposed of by compaction into a small volume. If the sponge has been exposed to potentially toxic metals such as mercury or lead, an analysis may need to be performed. Consult your local waste disposal authority for details.
- Fishnet installations can be periodically retrieved and replaced with fresh units.
- Used sponge can also be blended into the feed stock of a plywood factory.
- In certain applications, pollutants can be desorbed and the sponge re-used.
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