Overview

A heavy-duty dewatering pump removes accumulated water from open pits, quarries, construction excavations and other mining areas. Depending on its design, it may handle clean water, muddy water or water containing suspended solids. Diesel-driven, electric and submersible arrangements are available.

Main components

Pump casing; impeller or other pumping element; suction inlet and strainer; discharge outlet; shaft, bearings and seals; driver such as a diesel engine or electric motor; base skid or floating pontoon on applicable models; controls and protective devices.

How it works

Water enters through the suction line and is moved by the pump to a discharge line or settling pond. Installation, priming requirements and permissible solids depend on the pump type.

Typical applications

Mine-pit drainage, stormwater removal, groundwater control, quarry dewatering and transfer of water to settling or treatment ponds.

Selection considerations

Check required flow rate, total dynamic head, suction conditions, solids size, abrasiveness, water chemistry, fuel or power availability, portability and maintenance access. A pump’s maximum flow and maximum head generally do not occur at the same operating point.

Safety considerations

Secure suction and discharge hoses, protect operators from rotating parts, avoid dry running unless the pump is designed for it, and use suitable electrical protection where applicable