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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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Moranbah Township Irrigation System

Case Study

Customer: Isaac Regional Council

Location: Moranbah, QLD

Specifications & Features:

Isaac Regional Council - Dowdens Moranbah Irrigation System

Dowdens Pumping & Water Treatment's Mackay Branch has completed commissioning of the Moranbah 'whole-of-town' Automated Irrigation System. This Dowdens designed irrigation system was delivered to improve the control and ongoing maintenance of township irrigation within Moranbah, QLD.

Isaac Regional Council (IRC) specified a number of key criteria during the tendering process that the system was to deliver. These system criteria included, but were not limited to: provide the ability for night time automatic irrigation to numerous local Athletics Fields that have previously been irrigated manually (using static sprinklers and travelling irrigators) during the day; to replace an aging irrigation system located on Mills Ave. and achieve an overall reduction in labour relating to ongoing maintenance.

Dowdens Mackay successful tender was centred on an innovative Central Control System that enabled remote monitoring and maintenance of the 52 irrigation sites throughout Moranbah. The Dowdens designed controller is based in the Goonyella Road Council Depot. Dowdens Central Control System comprises of a desktop computer, irrigation software, an online weather station and localised communication/data collection infrastructure (routers, modem and radio transmitters/receivers).

This irrigation system is the first time Central Control System architecture has been utilised anywhere in the Isaac Regional Council shire. The system transmits all data collected / collated via several forms of communication i.e. radio frequencies, internet connection (Wi-Fi / 3G) and direct wired connections.

The Dowdens designed Central Control System has the ability to communicate to all Toro Sentinel Controllers via either radio frequency or internet connection. The operator has the ability to program and monitor all controllers via the Central Controller. The operator can set independent watering days, start times and run times for each and every station (valve) connected to Sentinel Controllers. Each day a detailed activity report is sent to all operators notifying them of all system activities, such as no. of actual stations operated, how long for, if any stations recorded abnormal flow (high or low), system communication success or failures, abnormal solenoid coil current (high or low) and the status of all soil moisture sensors. Reports can easily be generated to show the history of all/specific system activities such as those listed above.

A wireless Weather Station and remote Soil Moisture Sensors were installed and connected to the Central Controller to efficiently monitor the regions weather conditions in real-time, and then adjust the systems parameters accordingly. The Weather Station and remote Soil Moisture Sensors are used primarily to prevent irrigation occurring during and after localised rain events and to calculate Evapotranspiration (ET) based irrigation running times. For example the Central Control System is programmed to turn all irrigation off for 3 days (adjustable timeframe) when more than 10mm of rain is received on any 1 day (adjustable timeframe). Weather Station calculates the daily ET and automatically adjusts irrigation duration accordingly (lower ET = lower run time).


CLICK BELOW to hear Alan Pickering (Dowdens Turf Irrigation Design & Engineering Support) discussing the details of the
Moranbah Township Irrigation System with Meecham Philpott from ABC Radio's Tropical North Breakfast program

Dowdens Pumping & Water Treatment - Whole Town Irrigation System [Moranbah, QLD]

Details:

This systems has provided IRC control and monitoring capabilities of 52 irrigation sites throughout Moranbah from one central site. Delivering vastly improved energy and water use efficiencies this Dowdens designed irrigation systems features automatic shutdown of all irrigation during rain events; automatic adjustment of irrigation run times based on ET; daily automatic reporting of all irrigation sites activity; automatic irrigation for 75% of median strips located on Mills Avenue; addition of quick coupler valves to flush lateral lines thereby minimising blockages; automatic irrigation of Little Athletics / AFL Sporting fields resulting in reduced labour required for manual setup of irrigators; reduction of effluent contact with public via system only watering at night; filters on effluent mainline have minimised blockages to irrigation valve and sprinklers, thereby reducing labour required to clear blockages.

Dowdens Pumping & Water Treatment's design philosophy for this project was: Cost Effectiveness - Current Best Practice - Ease of Installation - Simple & Effective System Operation - System Reliability & Delivering Greatly Reduced Ongoing Maintenance Requirements.

Moranbah Township Irrigation ~ Key System FEATURES & Components:


CENTRAL CONTROL ROOM Components

TORO Sentinel Water Management System software - EATON Computer with Printer, Router, UPS - DAVIS Vantage Pro2Plus Weather Station Console (Inside Temperature, Humidity, Barometric Pressure Sensors) - DAVIS Vantage Pro2Plus Integrated Sensor Suite (Anemometer, Tipping Rain Collector, UV Sensor, Solar Radiation Sensor, Outside Temperature Sensor, Outside Humidity Sensor) - WEATHERLINK Software - TORO NSN Support Systems (24/7 Phone Support for IRC operators)

FIELD CONTROLLERS Overview

Field (or Satellite) Controllers were installed at 52 sites throughout Moranbah. These units control the irrigation at their respective sites by direct wire connection to solenoid valves. The field controllers act as stand alone units, operating independently from the central controller. However all of the Controller's programming information comes via the Central Controller. This allows Field Controllers to operate even if the Central Controller is not operational for any reason (loss of power, phone network outages etc.). The Central Controller and Field Controllers automatically communicate at the end of each day to tabulate current programming changes, and again each morning to receive detailed system activity reports. The Field Controllers can be powered by AC if available on site, or DC via by 12V batteries trickle charged by solar panels.

Controllers were either mounted on existing structures or on Dowdens fabricated galvanised steel posts, hinged to allow access from ground level. Each of the 4 irrigated Sports Field sites have a wireless soil moisture sensor attached. The Field Controllers can be set to prevent watering when the soil moisture is above 50% of capacity (all are adjustable). A Mobile Soil Moisture Sensor was also supplied to allow IRC operators to manually test and record soil moisture levels at any location. All Field Controllers have a built in radio for communication to a 'Base' or 'Node' Controller. Base Controllers also have a 3G modem to communicate with the Central Controller.

Moranbah Irrigation System - Field Controllers Overview

MILLS AVENUE - MEDIANS IRRIGATION Overview

This portion of the project involved the design, supply and installation of 17 irrigation systems for all median strips on Mills Avenue, Moranbah (running from Goonyella Road to Clements Street). The existing systems were old, had unreliable battery powered controllers and required high levels of IRC operator maintenance. Most of the medians were generally turf with established large trees, approximately 10 metres wide, ranging anywhere from 10 - 230 metres long.

Each median irrigation system that Dowdens supplied consisted of: DC Sentinel Controller with radio, battery, panel, antenna, hinged pole, connection to existing Effluent mainline, flow sensors, isolation ball valves, solenoid valves / valve boxes, Toro T5 pop-up sprinklers with flexible risers and quick coupler valves placed at the end of the lines for flushing purposes.

Moranbah Irrigation System - Median Strip Irrigation System Overview

LITTLE ATHLETICS / AFL FIELD IRRIGATION Overview

This portion of the project involved the design, supply and installation of an irrigation system for the Moranbah Little Athletics Field. The existing system consisted of a large travelling irrigator, which involved the IRC operator setting up the machine, manually turning it on and off and moving it to each position on the field. This produces uneven watering and often resulted in irrigation needing to undertaken during the day which goes against the applicable effluent re-use guidelines.

The irrigation system that Dowdens supplied incorporated: AC Sentinel Controller with radio & antenna (also incorporating AFL coverage), connection to existing Effluent mainline, 80 mm semi-automatic filter, flow sensors, isolation ball valves, solenoid valves / valve boxes, Toro 640 pop-up sprinklers with articulated risers and a wireless soil moisture sensor was installed on the AFL field to monitor soil moisture content.

Moranbah Irrigation System - Sports Field Irrigation Systems Overview

MAINLINE FILTERS Overview

This portion of the project involved the design, supply and installation of semi-automatic filters at various locations along the effluent mainline. A 200 mm filter was installed in the mainline behind Moranbah High School, a 100 mm filter at Tallon Street and an 80 mm filter at the Athletics / AFL Field. Each of these filters included galvanised steel pipework to allow filters to be mounted above ground, isolation valves, filter, concrete pad and a Dowdens fabricated lockable enclosure. The filters are easily cleaned by opening a valve / turning a handle to allow the suction scanners to clean the entire filter without needing the removal of the element - a huge time saver for the IRC operators.

Moranbah Irrigation System - Effluent Mainline Filtering Systems Overview

 
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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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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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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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Customised Dewatering Pump System

Case Study

Customer: Yancoal Australia Ltd

Location: Boonal Joint Venture (Bluff, QLD)

Specifications & Features:

Boonal Joint Venture Coal Load Facility

Dowdens Pumping & Water Treatment's Rockhampton branch working closely with Dowdens Pumping - Mackay's Industrial & Fabrication Workshops have successfully designed, manufactured and commissioned a Customised Dewatering Pump System for YANCOAL Australia. YANCOAL own and operate the YARRABEE Coal Mine & Boonal Joint Venture Coal Load Out Facility that is located 40 kilometres north-east of the township of Blackwater, QLD in Central Queensland's Bowen Basin. The Boonal Joint Venture is a coal load out facility located on the Capricorn Highway in Central Queensland, Australia. Coal from both the Yarrabee Coal Mine and Jellinbah Coal Mine are transported via rail link to the Port of Gladstone from the Boonal coal load out facility.

After initial site visits Dowdens Pumping - Rockhampton were able to measure the height and distance required for the dewatering pump system, as well as clearly establish pipe sizes and required flow rates to adequately meet the clients onsite dewatering requirements. This led to the in-house design of the unit by Dowdens Pumping - Mackay's Engineering Department. Once the proposal had been accepted by the client CAD drawings were immediately created and passed onto the Dowdens Industrial Fabrication Workshop.

Boonal Joint Venture's Customised Dewatering Pump System Supply Scope:

  • The Yanmar diesel engine recommended by Dowdens Pumping - Rockhampton ensured long term problem free operation
  • All fabrication, assembly and performance testing was conducted by Dowdens Pumping & Water Treatment in-house & onsite guaranteeing product quality

Boonal Joint Venture - Coal Load Facility Dewatering Pump

Details:

As Dowdens Pumping are an authorised FLOWSERVE Pumps Distributor, we were able to quickly and easily size and source a FLOWSERVE Hydro Titan Pump. The Hydro Titan 100x65-250 Pump has a capable duty of 14 l/sec (@ 50m total head) and perfectly matched the clients site requirements. From here Dowdens Industrial Fabrication Workshop welded the skid base together which was then bunded and fully hot dip galvanised. This innovative system utilised a universal coupling, installed between the pump and motor to reduce the chance of miss alignment occurring between the pump and engine.

Dowdens Industrial Fabrication Workshop then proceeded to assemble and mount the 125l diesel fuel tank, Yanmar 3TNV84TEPP-PE 3-Cylinder Diesel Engine, Hydro Titan 100x65-250 Pump and install the universal coupling. Dowdens Electricians then connected the battery and solar array charger module to the canopy [pictured below], whilst mounting the Yanmar 'Engine Protection Unit'. The engine was then taken outside and tested. Once all this was completed it was transported to site where final commissioning was successfully completed.

The complete Boonal Joint Venture's Customised Dewatering Pump System was designed, installed and commissioned by Dowdens Pumping on time and within budget. Dowdens Pumping & Water Treatment's Rockhampton branches design philosophy for this project was: Cost Effectiveness - Innovation - Ease of Installation - Simple & Effective Pump Operation - Engine Longevity - System Reliability & Reduced Ongoing Maintenance.

Boonal Joint Venture's Customised Dewatering Pump System - Key Components:

Boonal Joint Venture - Coal Load Facility Dewatering Pump



 
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Coppabella Township Water Treatment Plant

Case Study

Customer: Aurizon Holdings Limited

Location: Coppabella, QLD

Specifications & Features:

Aurizon Holdings Limited

Aurizon Holdings Limited have engaged Dowdens Pumping & Water Treatment [Mackay & Brisbane Branches] to deliver a Water Treatment Plant (WTP) at their Coppabella Township, located on the Goonyella Rail Corridor (the world's largest metallurgical coal rail system) - 159 kilometres South West of Mackay, QLD.

The township of Coppabella was primarily designed and built to service the junction of two railway lines (one from Goonyella Coal Mine and one from Saraji Coal Mine) and to provide accommodation to the regions coal mine workers in work depots. The town was established in three stages, with the first being completed in 1971, the second in 1977 and the third and final stage in 1984. The town is wholly owned and operated by Aurizon Holdings Limited and contains: stations, residences, single-quarters, work depots, hotel, a shop, swimming pool, football oval, caravan park, school, ambulance, fire brigade and of course the new Dowdens Water Treatment Plant which is capable of producing of up to 900kL of potable water per day.

Dowdens engineers and service crews designed, manufactured, installed and commissioned the Coppabella WTP to treat raw water to Australian Drinking Water Standards. As the Principal Contractor Dowdens were provided a set of feed supply water parameters coming into the WTP, and water quality requirements for the delivery of the town's drinking water. From these basics the $2.5 million project came to fruition. The Dowdens WTP replaced the existing water softening plant (located adjacent to the new WTP), whilst future-proofing the growth of the Coppabella township by increasing the WTP's maximum daily drinking water production capacity up to 900 kL/day.

The new WTP is completely automated and user adjustable via the GE Human Machine Interface (HMI) situated in the purpose built site Control Room / Office, minimising the need for direct operator interaction / intervention on-site. A dedicated remote monitoring / alert messaging system was also provided so that in the event of a critical alarm the EDAC 700 RTU will call the WTP Operators advising them of system alarm status via pre-recorded spoken messages.

Security of the WTP site was significantly improved with the establishment of a controlled compound restricting access to authorised personnel only (pictured below). Dowdens also eliminated the need for repetitive manual handling of typical WTP chemical consumables on-site (Salt, Liquid Chlorine and Soda Ash) via the integration of various bulk storage systems.

Dowdens Pumping & Water Treatment Coppabella Township Water Treatment Plant [Coppabella, QLD]

Details:

Dowdens were successful in the tendering process due to:

  • The proximity of Dowdens head office [Mackay] and ongoing presence in the region
  • Dowdens vast in-house engineering capabilities and proven competencies
  • High level of detail provided in the preliminary engineering proposal
  • Proposed Water Treatment Plants cost effectiveness

Dowdens coordinated the design, build and commissioning of the WTP from project inception through to final handover. This included, but was not limited to: preliminary design - detailed design - risk assessments (with client and consulting engineers) - preliminary civil works establishing the site (levelling site) - under boring Peak Downs Hwy for installation of raw water pipeline - installation of all underground services - pouring of slabs - construction of the Ion Exchange (IX) building - installation of process equipment - installation of all interconnecting pipework - electrical installation of control panel and field instrumentation / equipment - commissioning of instruments / equipment - commissioning of PLC program and HMI - successful completion of 'Proof of Performance' testing and all necessary operator training.

The inclusion of a unique Brine generation system was a novel approach that incorporated a salt bulk bag unloader (capable of lifting 1200kg bags - pictured below) and a proprietary piece of equipment from the USA [BRINE ExtremePro]. The IX system is flexible in its design and is capable of producing between 150 - 900 kL/day of potable water with the IX system constantly analysing and compensating for variations of incoming bore water hardness levels.

The existing water softening plant (located adjacent to the new WTP) and raw water supply needed to be retained during the new WTP construction. The old plant was decommissioned over a period of 3 months. Nearing project completion a wet weather event (February 2016) resulted in additional water flows through the WTP site causing some minor displacement / erosion of soil and stone that required a brief plant shutdown to rectify the damage. Dowdens performed this work efficiently and effectively eliminating any risk to the township's drinking water supply.

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

Water Treatment Plants Key Components are listed below:

Dowdens Pumping & Water Treatment Coppabella Township Water Treatment Plant [Coppabella, QLD]

 
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Mackay Renal Unit UV Sterilisation System

Case Study

Customer: Queensland Health

Completion Date: 11/02/2014

Location: Mackay, QLD

Specifications & Features:

Dowdens Pumping & Water Treatment have successfully designed, installed and commissioned a specialised Ultraviolet filtration system for the Queensland Health Mackay Renal Unit.

Project Requirements: The original system operated by pumping town water to individual filtering stations where the water would pass through a 5 micron, 1 micron and carbon filter on its way to the dialysis machine (which has an internal reverse osmosis filter).

The issue Dowdens faced was the original system filters were only lasting between 5 - 15 hours, and by this stage they were black and needed to be replaced!

After reviewing detailed water test results, Dowdens designed a compact, reliable system where the existing pump was upgraded, a water softening unit was added to remove iron, calcium and manganese. Large cartridge filters were also installed to pre-filter the water before it entered a dedicated UV steriliser.

Using the above system the Mackay Renal Unit now only needs to replace the systems filters every 7 to 10 days - saving thousands of dollars in ongoing system maintenance costs!

Mackay Community Health Services

Details:

Key Plant Features:

Mackay Renal Unit UV Sterilisation System

 

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