What is a sewage pump?
A pump used to move solid and liquid waste to a treatment location. Most municipal systems rely upon gravity to move waste from the drains of homes and other buildings to the local sewage treatment facility. However, it’s fairly common to have situations in which the sewage must be moved to a higher elevation or accross long distances and there’s not enough gravity-based pressure to do so. That’s where sewage pumps come in.
How do they work?
Most sewage pumps are submersible pumps, where the pump and motor are encased in a hermetically sealed chamber. The equipment sits at the bottom of the sump that is used to capture sewage, and it automatically turns on when the sewage rises high enough to trigger the power mechanism. In most smaller systems, the process is automated. There is an attached floating bulb that turns on the power when it rises above a certain level, and the power goes off when the bulb lowers below the shut-off level.
Where are they used?
Sewage pumps are used in private homes, commercial buildings, sewage lift stations, and sewage treatment plants. The pump is sized to handle a certain solids size, ranging from 2 inch for residential and light commercial applications, to 6 inch or larger for large municipal systems. For systems where it is desired to chop the solids, there are chopper pumps. Chopper pumps reduce solids into manageable pieces before pumping them. These are generally used in pressure sewer systems, sludge facilities, fertilizer processing facilities, or in waste processing for large agricultural applications.
Here are a few sewage pump manufacturers to consider.
Wastewater applications - Patterson manufacturers its H2O Works™ Type “F” pumps for wastewater applications with suspended solids. These heavy-duty, non-clog pumps are used in wastewater plants, chemical plants, food plants, meat processing facilities, pulp and paper mills, minerals —anywhere sludge or other unscreened solids with diameters up to 8 in. are found. The sewage pumps are offered in sizes from 12 in. to 48 in.
Type “F” units are available in more than 17 standard models and many custom configurations. Capacities range from 500 gpm to 100,000 gpm, with heads to 150 ft. Vertical configurations can be designed for a dry pit where the intermediate drive shaft is located some distance above the pump. Horizontal pumps are directly connected to the motor through a flexible coupling.
Industrial applications - The company manufacturers its Forceline pump to pump sludge, raw unscreened sewage, miscellaneous liquids and contaminated trashy fluids efficiently, without clogging. The sewage pump uses a patented self-cleaning ring to prevent clogging and is known for its high efficiencies, rugged construction and serviceability. Both horizontal and vertical models are offered in standard or alloy construction. Capacities range from 150gpm to 12,000 gpm, with heads in excess of 250 ft.
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