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Dewatering

Dewatering a mining site is the process of removing groundwater. When a mine extends below the water table, groundwater will penetrate the mine workings owing to gravity. Dewatering is critical to the mine's profitability and, in some cases, may need the deployment of significant resources and management.

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Dewatering Applications

Dowdens manufactures and supplies various dewatering products and systems for open-cut highwall and longwall underground applications. These include above-ground pumping stations, trailer and skid-mounted portable pumping stations, pontoon pumping stations for reservoirs and underground portable fish tanks and AODD sump pumps.

Industries Supplied

Dewatering Solution Options

  • Fish Tanks & Pods
  • Underground Pump Stations
  • Pontoons
  • Borehole Pumps
  • Trailer Mounted and Skid Pumps
  • Sump Pumps (AODD and Pneumatic Submersible)
  • Control Modules and Systems
  • Piping, Fittings, Valves & Accessories
  • Pressure Reduction Valve Assemblies

World Class Brands

Downdens supplies and services the world's best brands to suit all your dewatering requirements.

 

Mine Site Dewatering PODs and Fish Tanks

Dowdens Pumping and Water Treatment have purpose engineered a range of underground dewatering tanks with a maximum capacity of 14,000L (larger capacities available upon request). 

Portable Fish Tanks are used in underground mines as a part of the water management process. Mine water is collected from sumps and wet areas around the mine by air-operated Wilden pumps and delivered to the Fish Tank. Water level sensors then activate the pump and transfer the collected mine water to the central station, dam or directly out of the mine portal. 

Mine water is typically dirty with coal, rock, and dirt; pumps used are able to handle a slurry product. Fish tanks can be located in hazardous areas and fitted with flameproof motors and control panels with PLC and SCADA.

The tanks are designed to minimise maintenance, with the shape allowing for a self-cleaning action that dramatically reduces the retention of solids. In addition, the tank is equipped with a flanged sump for periodic cleaning. PODS and Fish Tanks are just one of the many dewatering solutions available from Dowdens Pumping & Water Treatment.

Underground Dewatering PODs Case Study >>

 
 

 

Underground Pump Stations

Dowdens can design, install and maintain underground pumping stations suitable for all your dewatering applications. These systems can include a single pump, duty/standby arrangements or even pumps in series to meet the required demands. Our experienced EPC department can engineer a solution, design, source and supply all system components required and deliver the project whilst meeting all the required guidelines.

 
 

Borehole Pumps

Borehole pumping is an efficient and effective way to manage underground water. Dowdens have the capabilities to design, supply and install a system to ensure that the mining operations are not affected by water inrush. One of the main advantages with borehole dewatering is that all of the infrastructure is accessed from the surface operations. The pumps are available in a range of voltages to suit the application and can be installed with galvanised steel flanged columns or layflat hose.

Mine Site Borehole Pump Installation Case Study >>

 

Pontoons for Reservoirs and Dams

Water management is one of the most significant issues in mining; too much, too little or in the wrong place can unnecessarily burden mine operations. Reservoirs are ever-present as mass water storage, and getting water out and distributed for use is challenging, considering water quality, access, and logistics. Dowdens Pumping and Water Treatment manufacture several options, with pontoons being one of the most popular.

Dowdens Designed Pontoons are manufactured in various sizes and capacities for the most arduous services, from slurry to high discharge pressures. Dowden’s engineering team can design and deliver a tailored solution to meet your requirements. Contact our industrial sales team today to discuss your specific needs.

Specialised Pontoon Pumping System Case Study >>

 

Trailer & Skid Mounted Pumps

Dowdens Pumping and Water Treatment provide customers with purpose-built solutions. We can either create trailer pumps or skid mounted pumps, depending on the application. All feature a single point lift, integral fuel tank with 48hr run time, engine and pump protection, full mine site compliance, with or without electric braking system and can be fitted with a gantry for the suction pipe.

Customised Dewatering Pump System Case Study >>

 

Wilden AODD Sump Pumps

Wilden’s AODD pump technology, invented in 1955 by Jim Wilden, has been proven over the ensuing years to excel when used in severe-duty mining applications. The list is long when naming the applications where mine operators are utilizing Wilden AODD pumps, including:

  • Froth flotation for particulate separation in slurries
  • Leaching of commodity by-products
  • Transfer and treatment of mine tailings
  • Wash bays for large-scale machinery and vehicles
  • Above and below-ground dewatering
  • Water recirculation
  • Water/land reclamation
  • Explosive atmospheres
  • Oil-separation processes
  • On-site bulk fuel transfer

Find out more about Wilden Pumps >>

 
 

Pneumatic Submersible Pumps

Dowdens is the exclusive Australian distributor for ATS2000 pneumatic lube-free submersible Vortex pumps. These pumps are environmentally friendly with world class leading lubrication free pneumatic motor and rust-free technology. 

Specifically developed to operate under severe mining conditions, like deep excavations and winces. With exceptional features; low air consumption, lightweight and easy to carry. A combination of toughness, durability, versatility and benefits never seen before. 

 
 

Our Capabilities

Solutions Engineering

Our experienced Solutions Engineering team can offer various services, including design, manufacture, installation and servicing of all equipment and systems. Our dewatering solutions are adaptable, considering that customer requirements change with industry regulations and expectations.

Find out more about Solution Engineering >>

EPC (Engineering Procurement Construction)

Have a large project coming up? Dowdens Pumping & Water Treatment’s EPC Engineering, Procurement and Construction team, will carry out the detailed engineering design of the project and procure all the equipment and materials necessary. The EPC Project Team will manage the project in-house and on site to deliver facilities or systems to meet and exceed our customers’ expectations.

If you are looking for a solution for your next pumping, dewatering, water or sewage treatment challenge, please contact us or follow the links below for more information about our capabilities. 

Read our Capability Statement for more information >>

Industry Experience

As Queensland’s leading pumping and water treatment organisation, we have the capabilities and expertise to provide our customers with purpose engineered solutions, which ensure greater productivity.

We understand the requirements to deliver quality products and market-leading solutions that are cost-effective and provide minimal downtime. If an issue does arise, we have qualified, experienced infield and workshop based tradespeople to get you up and running.

 
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