Basic Style Container Filters

All Basic Style Container Filters have filter media on the bottom of the container shell only. Liquid can drain by gravity, or a pump may be used to accelerate the drainage rate. This is the most economical style, but lacks the filter surface area of the other styles (although an available option does include a separate wall filter). Basic styles work well with sludge that is easy to dewater (sand, grit, bar screen material, etc.)

Standard Style Container Filters

Standard Style Container Filters have filter media on the bottom and both walls. In these units, the liquid from the sludge drains to the bottom cavity. Liquid drains by gravity in the Standard unit, although a pump may be utilized to assist in removing the liquid. Because the vertically oriented filter cavity is connected to the bottom filter, an effective vacuum can't be pulled on the sludge (as soon as the sludge level falls below the highest level of the vertical filter, the pump would "suck air"). The extra surface area offered by these "standard" units accelerates the drainage rate of the dewatering process and in some cases allows for dewatering where it wouldn't take place in a "Basic" unit. Available options allow for more than the two wall filters, thus increasing filter surface area.

Gravity/Vacuum Style Container Filters

Gravity/Vacuum Style Container Filters are constructed so that the bottom filter drains into a cavity that is separated from the cavity to which the wall (vertical) filters drain. This allows for a vacuum to be pulled on the bottom filter while simultaneously liquid can gravity drain through the wall (vertical) filters. This style is particularly useful in applications where the sludge being dewatered makes a permeable cake and dewatering time is crucial. Available options increase the filter area for the vertically oriented filters.