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FEATURED CASE STUDIES & LATEST NEWS

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GRUNDFOS Pumps Double Warranty Promotion

Wednesday, 19 July 2017
GRUNDFOS Pumps Double Warranty Promo now at Dowdens Pumping & Water Treatment

GRUNDFOS are so confident their pumps are the most reliable on the market they are offering free DOUBLE WARRANTY (as part of their Business Booster program) to customers who purchase an eligible pump* from a participating Grundfos Authorised Dealer and have it registered instore. Dowdens Pumping & Water Treatment's Rockhampton and Mackay branches are both Authorised GRUNDFOS Dealers and are therefore participating in this exciting promotion.

HOW TO REGISTER FOR GRUNDFOS DOUBLE WARRANTY

All eligible Grundfos pumps* purchased must be registered in-store at either the Rockhampton Branch or Mackay Branch of Dowdens Pumping & Water Treatment (Grundfos Authorised Dealers) from which the pump is purchased from in order to qualify for DOUBLE WARRANTY. Please be aware that there is no other way to register eligible pump* purchases for DOUBLE WARRANTY!

Once a Grundfos product has been successfully registered in-store by Dowdens Pumping & Water Treatment (Mackay or Rockhampton Branches), customers will receive an email confirmation of the registration sent to their nominated email address. A copy of this confirmation must be kept, in addition to the original Tax Invoice as proof of purchase.

* BELOW IS AN OVERVIEW OF THE ELIGIBLE GRUNDFOS PUMPS:

  • ALL Grundfos 3" (SQ & SQE) Submersible Pumps
  • ALL Grundfos 4" (SP & SPA) Submersible Pumps
  • Selected Grundfos Domestic Pressure Systems (CME Booster, CM Booster Self-Priming, CM-PS, CM Basic, SB, SBA, SB with PMRain, JPB [formerly known as JP / JP-PM], JPB with PMRain, JPC and JPC with PMRain)
  • Selected Grundfos Domestic Wastewater Pumps (SOLOLIFT2 & UNILIFT [CC, KP, AP12, AP35, AP50, AP35B and AP50B])
  • TO VIEW THE FULL LISTING OF ELIGIBLE GRUNDFOS PUMPS BY MODEL NAME CLICK HERE.

GRUNDFOS Pumps Double Warranty Promo now available at Dowdens Pumping & Water Treatment

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Underground Dewatering PODs

Case Study

Customer: Anglo American - Grosvenor Coal Mine

Location: Moranbah, QLD

Specifications & Features:

Anglo American's Australian Coal division engaged Dowdens Pumping & Water Treatment [Mackay] to deliver 8 specialised underground pumping PODs used for various dewatering applications at their Grosvenor Coal Mine, located 190km southwest of Mackay in Moranbah, Central Queensland.

Anglo American Grosvenor Coal Mine [Moranbah, QLD]

The Grosvenor mine is a developing underground longwall operation that makes up part of Anglo American's plan to triple hard coking coal production at their Moranbah mine sites. Located next to their existing Moranbah North coal mine, Grosvenor is set to produce up to 5 million tonnes of hard coking coal per annum for export. The Grosvenor mine utilises a 10km overland conveyor to transport high-quality metallurgical coal to the Moranbah North Coal Handling & Preparation Plant.

Construction on Anglo American's $1.95 billion Grosvenor longwall project began back in January 2013, with the development celebrating a number of industry firsts including being the first underground coal mine in Queensland to use a tunnel boring machine to develop the drifts, or access tunnels, in coal mine development. Anglo American aimed to have the Grosvenor mine raise the bar for onsite system and production efficiency - making the supply of unique underground POD pumping systems a perfect match for Dowdens Pumping & Water Treatment's experienced Engineering Department.

Dowdens Engineering Department's comprehensive abilities have been on the radar of many Central Queensland/Bowen Basin mines for some time through direct contact and working with industry leading consulting engineering firms. Dowdens ability to expertly design/manufacture/install and commission unique equipment built to specific client needs, together with a history of successful installations over the past 15 years in the Bowen Basin has positioned the business as Queensland's premier pumping & water treatment organisation.

Underground Pumping PODs are used in mines as part of the site water management process. Mine water is collected from sumps and wet areas by Wilden air operated diaphragm pumps and delivered to PODs where water level sensors then activate the pump and transfer the collected mine water to a mains pump station, underground storage dam or directly out of the mine portal. Mine water is typically dirty with coal fine, rocks and dirt; therefore slurry pumps are needed to handle such water. PODs can be located in hazardous areas and can be fitted with Flame proof motors and motor controllers with PLC (Programmable Logic Controllers) and SCADA (Supervisory Control and Data Acquisition).

Anglo American Grosvenor Coal Mine [Moranbah, QLD]

Details:

The Grosvenor mine site requirements meant each POD needed to have a 200kW power rating. With the site's physical constraints (i.e. the underground mined roof height and width, as well as the site lifting equipment for transporting) meant careful consideration was required for the overhung load whilst transporting this equipment. Capacity of a standard Dowdens POD is 4m3 with a 110kW motor, however with the larger flow rate required to and from the POD meant a 6m3 capacity working volume was needed. Bigger capacity and higher duty equated to a larger size motor and pump, more robust steel framework and additional accessibility for scheduled servicing.

Dowdens standard POD design incorporates a dirty water receiving area. This area, integral to the main hopper (container for collection of bulk material such as rock or soil), ensures particles that are too large for the pump to digest and transport are separated and manually removed periodically ensuring trouble free pumping.

Pumps selected by Dowdens for this harsh duty were Stalker 400SHD model with mechanical seals, seal lubrication and cooling. Motors selected were WEG brand Flameproof mine spec motors. The control for the pumps is a flameproof 200kW model with PLC and HMI (Human Machine Interface) screens. The controller starts and stops the pump, whilst also monitoring for faults and relaying important information to the mine surface via SCADA. Dowdens PODs built for the Grosvenor mine have the ability of easily interchanging the motors/pumps for differing duties. These will be identified as 200kW and 132kW cassettes. To accommodate this change the Main Control Unit (MCU) has the capacity to operate at either 200kW or 132kW with only slight changes to load controls.

The larger size and the flexibility to change the duty, together with Dowdens strategic POD site placement advice has enabled Anglo American less manoeuvring of the POD through development, saving costly underground labour and downtime. Without reliable pumping the mine's production slows/halts causing delays and safety issues which cost the mine many thousands of dollars each day. It was imperative the system worked and was extremely reliable. This project was delivered on time and within budget. Key project system components are listed below:

Unique features specific to the 8x Underground Dewatering Grosvenor PODs included:


Key Project Features:


Anglo American Grosvenor Coal Mine [Moranbah, QLD]

 
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Cannonvale Medical Centre Water Treatment System post Cyclone Debbie

Wednesday, 19 April 2017

Severe Tropical Cyclone Debbie made landfall near Airlie Beach on the Nth QLD coast 28th March 2017. It was a slow-moving category 4 system that generated wind gusts exceeding 160 km/hr, heavy rainfall and storm surges along the Nth QLD coastline. 27 hours later, after having tracked inland over Airlie Beach, Proserpine, Cannonvale and Collinsville it was downgraded to a Tropical Low. Dowdens Pumping & Water Treatment's Proserpine Branch is again open for business.

Cannonvale was amongst the hardest hit regions during Cyclone Debbie, so it was no surprise to Dowdens Pumping & Water Treatment's Proserpine Branch to hear Queensland Health had been advised they couldn't be guaranteed potable water supply to their Whitsunday Community Health Centre located in Cannonvale immediately after Cyclone Debbie.

Luckily Dowdens Pumping & Water Treatment's Head Office in Mackay had a portable Ultrafiltration Treatment System available, capable of supplying up to 70,000 litres of potable water per day. Queensland Health and the Whitsunday Community Health Centre in Cannonvale instructed Dowdens Pumping to supply/install the unit immediately on a temporary 'Hire' agreement in-case all mains water supply was lost.

There were two water sources available at the time - the mains water supply or bore water from the Proserpine Hospital. Queensland Health instructed Dowdens to connect the UF Treatment System to the bore water supply, in an effort to remain as self-sufficient as possible post-Cyclone Debbie.

PURION - Water Treatment Products by the Dowdens Group

Dowdens Pumping have previously completed numerous bore water filtration systems treating bore water with our own brand of PURION Iron Removal Filters, so this emergency UF Treatment System was quick and easy to install. PURION Iron Removal Filters pre-treat the bore water before running it through the Ultrafiltration System which then doses the filtrate with liquid chlorine to further disinfect.

Once treated Dowdens Pumping manually transported numerous loads of the potable water from the Proserpine Hospital (where the UF System was installed) directly to the Whitsunday Community Health Centre in Cannonvale, where it was stored in a potable water grade storage tank. The treated water was then used to supply the medical centre. The entire supply/installation and commissioning was successfully completed on Saturday 1st of April - only 4 days after Cyclone Debbie had hit.

If you are ever in need of potable water during a storm or emergency contact Dowdens Pumping & Water Treatment. Dowdens only require access to a reasonable source of water (bore, dam, creek) and power (generator or mains power) and we can guarantee same day potable water supply, in any situation!

Dowdens Pumping & Water Treatment installing a temporary Water Treatment Plant at Proserpine Hospital [Cyclone Debbie 2017]

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Heavy Vehicle Wash Bay

Case Study

Customer: Downer EDI Mining

Location: Tarong, QLD

Specifications & Features:

Downer EDI Mining Pty Ltd

Downer EDI Mining [a division of Downer EDI Limited] has engaged Dowdens Pumping & Water Treatment [Brisbane] to design, manufacture, install and commission a Heavy Vehicle Wash Bay and associated plant treatment equipment at the Meandu Coal Mine located in Tarong, South East Queensland.

Since January 2013 Downer EDI Mining has been providing mining services at Meandu Mine as part of their long-term rolling contract with TEC Coal Pty Ltd, a wholly owned subsidiary of Stanwell Corporation Limited. Downer provides a total mine service to TEC Coal, including mine management, planning, drilling, overburden removal (including dragline and truck-and-shovel operations), coal mining, coal processing, rehabilitation, and maintenance of mobile and fixed plant.

Downer EDI's Heavy Vehicle Wash Bay project tender was won primarily due to Dowdens ability to expertly design / manufacture / install and commission specialised equipment, built in-house & onsite to meet our specific client's unique requirements. With a history of successful installations over the past 15 years within the Queensland Mining Sector, Dowdens is Queensland's premier pumping & water treatment organisation.

Downer's project brief to Dowdens Brisbane was for the design / manufacture / installation and commissioning of a Heavy Vehicle Wash Bay capable of processing a minimum of 5 vehicles per day, with each vehicle taking approximately 1 hour to wash. Meandu Mine required this new Heavy Vehicle Wash Bay to be constructed after the mine had recently purchased a fleet of new generation trucks (KOMATSU 830E Trucks) which are considerably larger in size compared to their existing fleet.

Dowdens Pumping & Water Treatment - Meandu Coal Mine Heavy Vehicle Wash Bay [Tarong, QLD]

Details:

To ensure Meandu Mine continued to meet their Environmental Discharge requirements Dowdens designed and incorporated 4x Settling Pits & 3x Oily Water Separators into the construction of the Heavy Vehicle Wash Bay. In Queensland it is a legal requirement for mine sites to treat (separate) any sludge or oil from any waste water coming from a Heavy Vehicle Wash Bay.

Pictured below you can see the 4x large Settling Pits (empty) that are used to catch / store (via gravity feed) waste water from the Wash Pad area. The waste water generally contains some grease, oil, coal fine and soil (mud). The coal fine, mud and other solid particles washed off the trucks is allowed to settle to the bottom of the Settling Pits - the pits are then intermittently emptied by a Bobcat excavator.

The waste water (still containing grease and oil) is pumped from the Settling Pits via progressive cavity pumps into 3 individual 'Oily Water Separators' to remove the remaining contaminants. Once the waste water has been through this treatment stage it is pumped back into Meandu Mine's network of onsite holding dams to be used in other site extraction and processing applications.

Dowdens design philosophy for this project was: Cost Effectiveness - Current Best Practice - Ease of Installation - Simple Plant Operation - Plant Reliability & Reduced Maintenance.

Key Project System Components are listed below (click for component specs):

Dowdens Pumping & Water Treatment - Meandu Coal Mine Heavy Vehicle Wash Bay [Tarong, QLD]

 
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Game changing GRUNDFOS SCALA2 PUMPS now at Dowdens

Tuesday, 14 March 2017

Dowdens Pumping & Water Treatment are your local pump experts and are Authorised Grundfos MASTER DEALERS. Dowdens are Mackay's ONLY Authorised Grundfos MASTER DEALERS & Dowdens Rockhampton branch is also an Authorised Grundfos MASTER DEALERS. Grundfos pumps are market leaders, committed to providing new and innovative products that take comfort and simplicity to the next level, for these reasons we sell and recommend the new SCALA2 domestic pump.

Grundfos has long been regarded for their high quality and reliable pumps. The Grundfos SCALA2 takes design innovation, comfort and simplicity to the next level and is set to be a game changer in domestic boosting. The NEW Grundfos SCALA2 is a robust, fully integrated, self-priming pump suitable for use from both above and below ground water sources. The compact system features a pump, motor, tank, sensor, drive and non-return valve in one compact unit that is quick and easy to install.

The SCALA2 is an energy efficient pump featuring an integrated speed controller that ensures constant water pressure regardless of variations in demand or inlet pressure. For those living in areas of poor power supply or those that are sometime affected by power outages, the SCALA2 can also be run on a generator, due to its ability to be able to handle varying voltages.

The variable speed controller also matches the power consumption with the required water output, which also helps to conserve energy and reduce your energy bills. To protect the pump and help ensure a long life, the SCALA2 includes a range of protective features. Dry run protection automatically stops operation when the water source runs out, to help prevent damage, and the anti-cycling feature detects any unnatural cycling and alerts the user via the protection indicator on the control panel.

Another unique benefit of the SCALA2 is its quiet operation, thanks to the permanent magnet motor and water cooling technology. The high efficiency motor is significantly quieter than traditional speed-controlled motors and the SCALA2 is cooled by the water it pumps, eliminating the need for a noisy fan. This makes the SCALA2 one of the quietest domestic boosting pumps currently available on the market.

For ease of selection, the SCALA2 suits most domestic pressure boosting applications and is capable of supplying water for small single level homes up to larger multi-storey homes.

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Water Treatment System (Ultrapure Water Production)

Case Study

Customer: Sullivan Nicolaides Pathology

Location: Bowen Hills, QLD

Specifications & Features:

Sullivan Nicolaides Pathology

Dowdens Pumping & Water Treatment's Brisbane branch has built a strong relationship with Sullivan Nicolaides Pathology (SNP) after more than 25 years of providing high purity water treatment systems / solutions for 22 of their Commercial Testing Pathology laboratories - from as far north as Cairns, down south to Coffs Harbour and everywhere in between. The majority of Dowdens Pumping & Water Treatment's high purity water treatment systems are used primarily in Sullivan Nicolaides blood testing machines. SNP was formed in 1956 when Dr John Sullivan started a small pathology practice to service local families in and around Brisbane. Dr Nick Nicolaides joined him 18 months later and since then, it has grown to one of the largest and most trusted pathology practices in Australia.

The PROBLEM:

Tap or 'town' water contains many substances that if left untreated, can react with the reagents used in controlled laboratory tests, causing positive or negative interference which leads to unreliable test results. Cations such as sodium, calcium, magnesium or iron; anions such as bicarbonate, chloride and sulfate; and other inorganic ions, are commonly found in tap water. A number of other contaminants - such as pyrogens, nucleases, alkaline phosphatase and endotoxins may be present. As they are not harmful for human consumption, they are not thoroughly regulated or tested in the course of South-East Queensland municipalities potable water treatment and distribution. These contaminants are detrimental to experimental / laboratory processes that require precision, high sensitivity and precise instrumental operation.

Boonal Joint Venture - Coal Load Facility Dewatering Pump

Details:

Our SOLUTION:

Water purification is highly dependent upon local (and even site-specific) variations in the make-up of the town / tap water quality, which can differ greatly from place to place. For this reason Dowdens Engineers have designed each and every SNP high purity water treatment system individually, with local and site specific feed water characteristics in mind. The most recent system was installed at SNP's Central Laboratory located in Bowen Hills, QLD.

After careful analysis of the town water being delivered directly to SNP's Bowen Hills Laboratory a turn-key 'looped' treatment system was designed, manufactured and incorporated into SNP's existing Building Maintenance System (BMS). The first stage of this looped system is pre-treatment of the town water via a set of Duplex Carbon Filters and Water Softeners. The water is then fed through Duplex Matten Reverse Osmosis systems and Duplex 10" Deionisers and then stored in four 1,000L loop tanks. This treated water then passes through a set of four Deioniser Polishing Systems which (via a pump) is recirculated into and around the labs as 18 MΩ/cm ultrapure water (UPW).

This 'looped' high purity water treatment system delivers 56,000L of 18 MΩ/cm UPW / day - providing not only the capacity required for SNP's entire Bowen Hills Central Laboratory, but also delivering sufficient redundancy so that during times of service / maintenance the lab and testing machines are never without sufficient UPW to remain operational.

Dowdens Pumping - Brisbane's design philosophy for this project was: Cost Effectiveness - Ease of Installation - Simple & Reliable Plant Operation - System Reliability & Reduction of Ongoing Maintenance Costs. The entire SNP high purity water treatment system was designed, manufactured, installed and commissioned on time and within budget.

Sullivan Nicolaides Pathology's Central Laboratory [Bowen Hills, QLD] - Key Components:

...

As an Australian owned company that began life in 1973 selling and servicing all manner of water treatment equipment, Dowdens has grown to employ over 160 staff situated across 4 branches in Mackay, Proserpine, Rockhampton and Brisbane permitting us to confidently service customers throughout Queensland, nationally and internationally. From project inception through to final commissioning - the team at Dowdens has the ability to deliver complete specialised long-term engineered solutions that are practical and innovative, ensuring our clients benefit from greater productivity and reduced equipment downtime.

With dedicated departments of industry trained engineers, draftsmen, project managers, sales staff and tradespeople including fitters, mechanics, polywelders, machinists, plumbers, electricians and boiler makers - Dowdens Pumping & Water Treatment offer an unmatched range of world-class engineered solutions for any type of water management project. We truly are Queensland's premier one-stop-shop for pumping and water treatment systems!

Boonal Joint Venture - Coal Load Facility Dewatering Pump


 
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Dowdens Pumping & Water Treatment secure rights to MIRACELL Sewage Treatment Systems

Monday, 1 December 2014

Dowdens Pumping & Water Treatment are proud to announce securing Australia-wide exclusivity of the MIRACELL Rotating Biological Contactors (RBCs) Sewage Treatment Systems. MIRACELL RBCs are the systems are most preferred globally by customers who clearly understand the economic value in purchasing an expertly designed and professionally built Sewage Treatment System!

MIRACELL RBC Sewage Treatment Systems are fully automatic, modular designed Rotating Biological Contactor (RBC) treatment systems specifically designed for sewage treatment applications in capacities ranging from 50 to 20,000 equivalent people (treatment of between 10m3 up to 4000m3 / day). Representing the ultimate in Sewage Treatment Systems, a MIRACELL RBC consumes as little as one fifth of the electricity and requires as little as one third of the space of its competitors based on the activated sludge technology.

Having exclusive rights to MIRACELL RBCs has increased Dowdens capacity to design, supply, install and service large scale Sewage Treatment Systems suitable for use by municipalities, caravan parks, mining camps and a wide range of other commercial / industrial sites where onsite sewage treatment is needed.

Dowdens Pumping & Water Treatment employs an experienced team of WTP and STP Project Specialists comprising of Mechanical and Process Engineers, Project Managers, Draftsmen with 3D Autocad skills and qualified installation and service crews, together with our in-house workshop facilities for the fabrication of steel and stainless steel skids and bases, Dowdens has little to nil reliance on outside contractors when delivering complex Water and Sewage Treatment systems - in essence we are a 'one-stop pumping, water and sewage treatment shop'.

Examples of Dowdens Water and Sewage Treatment projects:


MIRACELL Rotating Biological Contactor Sewage Treatment Systems

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Solar Powered Emergency Shower and Eye Wash Station

Case Study

Customer: Downer EDI Mining Blasting Services

Location: Mount Thorley, NSW

Specifications & Features:

Dowdens Pumping and Water Treatment have successfully designed, manufactured and commissioned a self-contained Solar Emergency Eye Wash and Safety Shower. The safety station incorporates both safety shower and eye wash facilities, which are supplied from a water tank via a solar powered Grundfos pump.

This unit was designed and manufactured to comply with Australian Standards AS4775-2007.

Dowdens supplied the portable Solar Eye Wash and Safety Shower station to Downer EDI Mining Blasting Services for use at the Rio Tinto Coal Mount Thorley open cut coal mines (located 15km South West of Singleton in the Hunter Valley region of NSW).

Project's Supply Scope:

  • Water Tank is insulated with drain valves and fill points
  • 1x 190W Solar Panel
  • Heavy duty battery pack
  • Voltage regulator and power inverter control panel
  • Grundfos pressure water pump
  • Stainless steel base frame with 'grab rails'
  • Eye wash basin and foot-lever action shower head
  • Green LED safety light (viewable from 360)

Dowdens Pumping & Water Treatment Emergency Eye Wash Station

Details:

Key Features:
  • The station uses the suns energy to charge 6V batteries via 1x 190W solar panel
  • This energy is then stored and converted to 240V power which in-turn drives the electric Grundfos pump
  • The Power Inverter Control Panel contains the solar charger module and the power inverter module
  • The self-contained Solar Eye Wash and Safety Shower station was designed and manufactured to comply with Australian Standards AS4775-2007
Dowdens Pumping & Water Treatment Emergency Eye Wash Station

 
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35 bar Pressure Reducing Valve Station

Case Study

Customer: Anglo American - Moranbah North Coal Mine

Location: Moranbah, QLD

Specifications & Features:

Anglo American Moranbah North Coal Mine

Dowdens Pumping & Water Treatment's Mackay branch were engaged by longstanding customer Anglo American (Moranbah North Coal Mine Site) to deliver an innovative valve system that could help maintain the safe and reliable delivery of general purpose & fire water services to their ever-expanding underground mining operations. With growing demand for reliable water flow & pressures at ever-increasing operating depths, Dowdens decided it was time to design & produce a new generation 35 bar Dual Pressure Control Station, expanding our range of standardised pressure reducing valve stations.

Dowdens Pumping & Water Treatment fabricate and fit out a range of standardised pressure reducing valve stations, but this station required a higher pressure rating not available with our standard 'off the shelf' systems that are available in 16 / 25 bar (35 / 40 bar rated systems are built to order). Dowdens have manufactured these products for many years to help our resource industry customers arrest any water pressure spikes and/or surges in pipe systems and to aid these mines operating within and remaining fully complaint with Queensland Government Mine Site Compliance legislation, standards & guidelines.

This new Dual Pressure Control Station has been built to optimise plant reaction speeds, allow for greater operating ranges from between 2 - 35 bar and is manufactured with high-quality, reliable and readily available components. The design needs for the new Dual Pressure Control Station were borne primarily from Dowdens detailed underground observations of hydraulic occurrences within the mines existing water network. Working closely with the mines water infrastructure operators Dowdens were able to engineer, manufacture and deliver a product that increased the reliability of their mine water supply systems and assist with premeditated preventative maintenance routines.

All design, fabrication, installation & commissioning of the 35 bar Pressure Reducing Valve Station was undertaken by Dowdens Mackay's in-house Engineering, Fabrication & Workshop Departments. With a history of successful installations over the past 20 years throughout the Queensland Mining Sector Dowdens Pumping & Water Treatment have the ability to expertly design / manufacture / install and commission specialised pumping and water treatment solutions that are built primarily in-house & onsite to our client's specific unique requirements. Dowdens dedicated departments of industry trained engineers, draftsmen, project managers, sales staff and tradespeople including fitters, mechanics, polywelders, machinists, plumbers, electricians and boiler makers enable us to offer an unmatched range of world-class engineering solutions for any type of fluid handling project. We truly are Queensland's premier 'one-stop-shop' for pumping and water treatment systems!

Moranbah North Coal Mine - 35 bar Pressure Reducing Valve Station

Details:

At this projects inception Dowdens visited site to examine and document the specific operating requirements. After initial observations it was concluded that a wider operating range would be required for effective control of both the High and Low Flow demands and a higher adjustment range - meaning the standard Dowdens 25 bar Pressure Reducing Valve Station needed to be modified to suit this application. This higher pressure is not normally encountered with Queensland underground mine water supply systems so unique and customised hydraulic control layouts, pilots & hardware were seamlessly incorporated into the build by the Dowdens Mackay Workshop and Project Engineers.

This projects entire design, manufacture, installation & commissioning process was completed on budget and within a tight timeline of 4 weeks set by the customer.

Anglo American (Moranbah North Coal Mine) 35 bar Pressure Reducing Valve Station - Key Components:

Moranbah North Coal Mine - 35 bar Pressure Reducing Valve Station

 
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Mine Site Rehabilitation Solar Pump System

Case Study

Customer: Department of Environment and Heritage Protection

Location: Mount Chalmers Gold Mine - Mt Chalmers, QLD

Specifications & Features:

Dowdens Pumping & Water Treatment's Rockhampton branch were engaged by the Queensland State Government's Department of Environment and Heritage Protection to deliver an efficient solar pumping system at the disused Mount Chalmers Gold Mine (located 15km North-East of Rockhampton, QLD).

As part of this sites ongoing rehabilitation process the Department of Environment and Heritage Protection needed an efficient solar pumping system to recirculate contaminated mine water collected from a sump, back into the main pit, thereby eliminating any contaminated mine water runoff from site. The Department of Environment and Heritage Protection has been managing the key environmental issues at the Mount Chalmers Gold mine since the former operators Affinis Pty Ltd was placed into liquidation in December 2014. EHP is also supported by other government agencies including the Department of Science, Information Technology and Innovation (DSITI) who are providing scientific advice on technical aspects of site management. The primary ongoing focus is to prevent any discharge of contaminated water from the site.

With limited mains power available to the site the use of solar power was a perfect fit for this pumping application. Solar powered pump solutions are always improving, none more so than Grundfos Solar Water Solutions. During initial site inspections the pumps required operating duty was calculated to be 13L/sec @ 18.5m Total Head. To meet these high flow requirements a Grundfos Solar Inverter (RSI) was selected to power the Grundfos R Series Submersible Pump [SP46-3 5.5kw 415V] that the Department of Environment and Heritage Protection already had onsite. The Grundfos R Series SP46-3 is a Stainless Steel pump capable of handling the low pH, slightly acidic mine water (measuring between 2 & 3 pH) needing to be pumped.

Utilising a combination of Grundfos Solar Water Solution products (inverter / pump / solar panels) appealed to the Department of Environment and Heritage Protection as it meant Dowdens could supply a system that not only costs less to install and maintain, but importantly can pump a larger volume of water under solar power. Put quite simply the ability to run large 415V pumps capable of greater pump duties is making the decision to 'go green' and install solar powered systems more attractive in the current climate, for miners and farmers alike.

Dowdens Grundfos RSI Solar Pumping System - Mt Chalmers

Details:

Dowdens Pumping - Rockhampton initially visited site to establish location of the solar arrays and calculate pump duty. Once known the following components were sourced and prepared for installation: 36 x 270 Watt Grundfos Solar Modules, 2 x 18 SolarTerrace Module Fixed Array Frames, 7.5 kW Grundfos RSI Inverter & Sine Wave Filter and 200m of 110mm PN10 Poly Pipe. The Grundfos SP46-3 5.5kw Pump was attached to a specialised float that sits on the surface of the sump (pictured below). Pump starts & stops via a level float switch mounted on 4m pole that can be swivelled over to the sump's bank should any maintenance be required.

Local contractors were then engaged to complete the site earthworks and trenching needed for all electrical conduits. Once the solar array support posts were cemented in place, Dowdens Pumping - Rockhampton assembled the SolarTerrace Array Frames and mounted the 36 modules (2 x 18 Modules) ready for the electrical components to be installed.

Electrical contractors RILEC Electrical (accredited electrical/solar contractors) completed the electrical fit-out. As part of these works Dowdens Pumping - Rockhampton delivered the Grundfos Solar Inverter Sinewave Filter & String Connection Box (pictured below) to the RILEC workshop so it could be mounted in a powdered coated, lockable enclosure with sufficient ventilation to ensure the inverter remains cool during the day. RILEC then brought the control box to site, mounted it and completed all wiring to meet electrical standards and the site specifications. All commissioning of this system was undertaken by Dowdens Pumping - Rockhampton.

Dowdens Pumping & Water Treatment's Rockhampton branches design philosophy for this project was: Cost Effectiveness - Innovation - Ease of Installation - Simple & Reliable Pump Operation - System Reliability & Reduced Ongoing Maintenance. The entire Grundfos RSI Solar Pumping System was designed, manufactured, installed and commissioned on time and within budget.

Mount Chalmers Gold Mine ~ Solar Pumping System - Key Components:

...

As an Australian owned company that began life in 1973 selling and servicing agricultural pumps, Dowdens has grown to employ over 160 staff situated across 4 branches in Mackay, Proserpine, Rockhampton and Brisbane permitting us to confidently service customers throughout Queensland, nationally and internationally. From project inception through to final commissioning - the team at Dowdens has the ability to deliver complete specialised long-term engineered solutions that are practical and innovative, ensuring our clients benefit from greater productivity and reduced downtime.

With dedicated departments of industry trained engineers, draftsmen, project managers, sales staff and tradespeople including fitters, mechanics, polywelders, machinists, plumbers, electricians and boiler makers - Dowdens Pumping & Water Treatment offer an unmatched range of world-class engineering solutions for any type of water management project. We truly are Queensland's premier one-stop-shop for solar pumping and water treatment systems!


Dowdens Grundfos RSI Solar Pumping System - Mount Chalmers

 

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