The City of Troy, New York purchased a SRS Crisafulli FLUMP in 1991, and a second Crisafulli dredge, the Rotomite-SD110, in 2014. The FLUMP is a 40 HP, 4” model with wheels attached to the pontoons for easy transport around the facility. The Troy water treatment facility has two lagoons. The FLUMP is in the lagoon closest to the storage tank (See photo). The second lagoon is further down the hill, is irregularly shaped and its water level fluctuates greatly. SRS Crisafulli built a 4” J-Series artisan pump to achieve 800 GPM at 120’ TDH, which is a higher head capability than Troy’s FLUMP, and is able to maneuver around the upper pond without a cable traverse system. The application was to remove sludge from the upper lagoon and pump it to a tank for dewatering using a press. As the capacity of the plant increased, the FLUMP and press could not keep up with the sludge accumulation. The FLUMP maintains the tank’s water capacity and the Rotomite fills geotubes, which enable dried solids to be removed for disposal. The Rotomite’s variable speed pump maintains a consistent flow of slurry into the geotubes. With the two dredges, the City can keep its two lagoons cleaned and sustain the required drinking water capacity
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