The redesigned 3DP belt filter press from BDP Industries offers more convenient access and easier maintenance, and produces a higher concentration of discharge solids, says Kelly Brown, director of marketing and sales.
“We started out with a clean sheet of paper and put everything we’ve learned about belt filter presses into the 3DP,” Brown says. “It’s aimed at the municipal biological sludge market and at mobile contract sludge dewaterers.”
For the mobile contract dewatering market, the unit is designed to mount inside a semi trailer. With that in mind, the 3DP’s independent gravity zone inlet is located at waist level for easy access and operation.
“Many belt press inlets are near the roof of the trailer, which means the operator needs a ladder to get up to it,” Brown explains. “With the 3DP, the inlet is right where you can see it, which makes operation much easier.”
In addition, the unit features a vertical pressure zone instead of a horizontal zone. Filtrate pans under each roll keep filtrates from falling on adjacent rolls and re-wetting the cake.
“That way, you get a higher concentration of discharge solids,” Brown says.
The vertical pressure zone offers another advantage: the discharge point for dewatered material is seven feet above the semi-trailer deck — which is actually about 12 feet above ground level. This provides operators with clearance to park a dump truck under the discharge point for easy cake removal, instead of using a conveyor or front-end loader, Brown notes.
The unit includes a variable-speed paddle wheel feed box that spreads slurry out along the width of the press, which promotes uniform thickness and minimizes clogging.
“Maintenance costs are lower, too, because with a more even cake, there are fewer abrasions on the roller coating and less wear on the filter-belt cloth,” Brown adds.
The machine features tubular frame construction. Because tubular construction features flat surfaces with no corners or ledges, it’s easier to clean. Thanks to vent holes, a hot-dip galvanized coating covers both the inside and outside of the frame, which maximizes corrosion protection. For more information: www.bdpindustries.com or 518/527-5417.
